Analysis Report block.dll

Overview

General Information

Sample Name: block.dll
Analysis ID: 403080
MD5: 5a7c87dab250cee78ce63ac34117012b
SHA1: 554c4ccf2341182768d475087d8a8bcfaa525a12
SHA256: 8a26c32848c9ea085505359f67927d1a744ec07303ed0013e592eca6b4df4790
Tags: DLLGoziISFBUrsnif
Infos:

Most interesting Screenshot:

Detection

Ursnif
Score: 72
Range: 0 - 100
Whitelisted: false
Confidence: 100%

Signatures

Found malware configuration
Yara detected Ursnif
Yara detected Ursnif
Writes or reads registry keys via WMI
Writes registry values via WMI
Contains functionality to call native functions
Contains functionality to dynamically determine API calls
Contains functionality to query CPU information (cpuid)
Contains functionality to query locales information (e.g. system language)
Contains functionality to read the PEB
Creates a process in suspended mode (likely to inject code)
Detected potential crypto function
Monitors certain registry keys / values for changes (often done to protect autostart functionality)
Queries the installation date of Windows
Sample execution stops while process was sleeping (likely an evasion)
Sample file is different than original file name gathered from version info
Uses 32bit PE files
Uses Microsoft's Enhanced Cryptographic Provider
Uses code obfuscation techniques (call, push, ret)

Classification

AV Detection:

barindex
Found malware configuration
Source: 5.3.rundll32.exe.4d58d29.0.raw.unpack Malware Configuration Extractor: Ursnif {"lang_id": "RU, CN", "RSA Public Key": "8oKmD0Ib40VYxHRgT7OnHwlxmK3U2F2Fl3GpR9KrKxvSCrIeiCLZWlQ2QCt+AnP+N5tCnTTv45/b0/D8Eb4xqxiXBnUy/ADWorQScIoNIPfBQqutzO+Ozy/mev4m2eZAuMivS2UNJVH4DVsYsAkGAC4GR+aszytDfGSZp3MklfgRJ6Noj034BrS4tQl5qmeWhJa+Of/CLdmkCwJurSEhMKu3NK7g4EVzni8lIJrDkWNCTaVL4CWXewbAOJFPwh8Y/20KkHTZmVKLmJJRcSj8yyH0avZDtWvJHRDxiI+JYUar2ia3phWwtqVzVhzYzz8aoUVzmlt840TF55o2e8TRUCEZNNmvmluqgNZzQuNIj68=", "c2_domain": ["app.buboleinov.com", "chat.veminiare.com", "chat.billionady.com", "app3.maintorna.com"], "botnet": "1500", "server": "580", "serpent_key": "ZQktwkM8O9lYn9oX", "sleep_time": "10", "SetWaitableTimer_value": "10"}

Cryptography:

barindex
Uses Microsoft's Enhanced Cryptographic Provider
Source: C:\Windows\SysWOW64\rundll32.exe Code function: 4_2_033D35A1 CryptAcquireContextW,memcpy,CryptImportKey,CryptSetKeyParam,memcpy,CryptEncrypt,CryptDecrypt,GetLastError,GetLastError,CryptDestroyKey,GetLastError,CryptReleaseContext,GetLastError, 4_2_033D35A1

Compliance:

barindex
Uses 32bit PE files
Source: block.dll Static PE information: 32BIT_MACHINE, EXECUTABLE_IMAGE, DLL
Source: C:\Program Files (x86)\Internet Explorer\iexplore.exe File opened: C:\Program Files (x86)\Java\jre1.8.0_211\bin\msvcr100.dll Jump to behavior
Source: Binary string: c:\Whether\class\156\Through\How.pdb source: block.dll
Source: C:\Windows\SysWOW64\rundll32.exe Code function: 4_2_033D4E9C Wow64EnableWow64FsRedirection,RtlAllocateHeap,RtlAllocateHeap,RtlAllocateHeap,memset,CreateFileA,GetFileTime,FindCloseChangeNotification,StrRChrA,lstrcat,FindFirstFileA,FindFirstFileA,CompareFileTime,CompareFileTime,FindClose,FindNextFileA,FindClose,FindFirstFileA,CompareFileTime,StrChrA,memcpy,FindNextFileA,FindClose,FindFirstFileA,CompareFileTime,FindClose,HeapFree,HeapFree, 4_2_033D4E9C
Source: global traffic HTTP traffic detected: GET /u9JBOXOyCt1J/Cqk3pF0_2B2/evko0P1iOLkfYu/tE8kijPwXl6fpTUvGY0L0/uKSRiZsz1TrVOn7H/lYNbZbDXpFfEDld/SZEdzjQiJ4mBJjhxQf/lliemLK4E/fjiV_2FMKJMbBd5i_2F6/V_2Fz7Tym384w5xw_2F/kNwSikyIWBdKPim7R9vGWb/gFLpN9hJBqDsa/ZkxxO_2B/g7xuaBcPsCTSbIA7GEQ7zhu/w_2FuzPVom/0RGTspDSMbay7GsRJ/O_2BvpZGrQEs/hpy5azZaVzk/tO8Yj0mAC2rNEA/7Y_2FaW8HQeMqJNFtj5QK/iv0XWUt_2F3/3R HTTP/1.1Accept: text/html, application/xhtml+xml, image/jxr, */*Accept-Language: en-USUser-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; Trident/7.0; rv:11.0) like GeckoAccept-Encoding: gzip, deflateHost: app.buboleinov.comConnection: Keep-Alive
Source: global traffic HTTP traffic detected: GET /zWr7XKiLQ_2F3QZ2bR/ZuzwfgbmQ/mjgvv5jUliwpj1wMmSf1/mVwZRrRJ02ozj18W4CC/_2FqTc0J0ACZs0Zo0yB15V/UkO_2BhXUEjqi/ylcme0uu/h88DPxTz52fwzk2KiAITqAX/y1YkE9ueOd/NzFODbcfeCN_2B548/9jGMMg_2FjQB/TCcN38_2FLl/w78Mf5LsU18OtD/O9ldbeaIz2YOBBV9govEw/if1bIKJhIzR9fYIT/Dva1E7_2F2LcgBj/3WJFp2Il273lx9FN_2/B45JK5S6v/rZZWdDOKWu65eMI2rNKK/RAsOHyLCy3eKhZf_2Fm/CD_2FuANPfLuHGjULRoA2Y/Paqy HTTP/1.1Accept: text/html, application/xhtml+xml, image/jxr, */*Accept-Language: en-USUser-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; Trident/7.0; rv:11.0) like GeckoAccept-Encoding: gzip, deflateHost: app.buboleinov.comConnection: Keep-Alive
Source: global traffic HTTP traffic detected: GET /hPJ75Rz1l0Yg172f0/W92Rc6NrZORu/agJ84T4GWPF/71Su9Jrd5ILrko/1XWo5CLa_2Bx1ycL2fXGF/76IsZupbi6IIIogp/P_2BrqGlfT6Z_2F/9HIF9QL_2Ffn95EjHz/EKpbgAout/m_2FkBfNGzNFhXOxCcqe/1zQKvOOwqE_2B22qrZS/vj3rmMMb_2BsLkd2AZhDC4/602lvjtm6dYcP/dyzgfgBT/A_2BC4eofqol5orEsMEQPWe/zZ6Swnuj_2/FM3kwbNjGbF9dztKO/5Sul25wMK_2F/fSrDDmSQa3P/LwvXQje5tWHJ24/YCtfl_2Bd9Wgni_2B/yKHW HTTP/1.1Accept: text/html, application/xhtml+xml, image/jxr, */*Accept-Language: en-USUser-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; Trident/7.0; rv:11.0) like GeckoAccept-Encoding: gzip, deflateHost: chat.billionady.comConnection: Keep-Alive
Source: global traffic HTTP traffic detected: GET /1Z7Zv_2Fo_2BBI/5yyu9xO7U6xQJUAU9LBdU/_2BZsJzv4AW1v4_2/FuBHkCgtXKYNI2J/fjLUpx4yvdGQ9xBWU8/nZ2UCR2Fn/6_2BJUjWbSDTFYEq01IK/G2MuJJozgl6fI_2Bxi6/8WHocMwy1m3c6beo7EybdT/0fZNT0A7jOYrz/ZJgKKaGn/V_2Bc6nIeAMBXcBQSTKS3tI/dRpB7HoFuq/5r0h_2Bic5oCoaHxQ/GZIQmnaYFeN7/lgmkXjg8R1P/o6CJiUeiWxo9TA/Om1BRSx_2BLEYhxw_2B1w/ztx7Xd1V_2BwFgLL/5ttSiFJbfjzPnDR/nMd_2BdWk4HTz_2Ftn/Va7N0lfshKE/mKz HTTP/1.1Accept: text/html, application/xhtml+xml, image/jxr, */*Accept-Language: en-USUser-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; Trident/7.0; rv:11.0) like GeckoAccept-Encoding: gzip, deflateHost: chat.billionady.comConnection: Keep-Alive
Source: global traffic HTTP traffic detected: GET /cDNEPwBarUn/ROJH1XYkRfSClQ/qONBPlQo8FxG6mQW9Ogcz/u7mo1Dj2PullrRPq/bR_2BFpPLx7OhU9/HJBhAhHBzmstPPDOE1/w6ebBa_2B/KX_2BOm6FIW3gd6Bvbnj/Sh9h8HN_2BONCwGgPQr/IY0nkmO9u18wIpqrmMTW3z/GWi0vHa3h_2Bj/6IH92Uhj/Iom39I56_2BMfY2_2BRDxU0/VfXOZ9_2BQ/hDbFynpSdJTA10_2B/DTN9zUXGBVIL/6pinDdbjTIZ/J8liN5BZT7oU_2/FDetd44m1Cdm74WjgwpWw/7RPnYCrU0gXGaG9w/dolpQdALprU5fVz/g9lnmYz4c/oMbk6u HTTP/1.1Accept: text/html, application/xhtml+xml, image/jxr, */*Accept-Language: en-USUser-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; Trident/7.0; rv:11.0) like GeckoAccept-Encoding: gzip, deflateHost: app3.maintorna.comConnection: Keep-Alive
Source: global traffic HTTP traffic detected: GET /6r_2FD5QsDWTjJjwzHfBaL/2HYJ2K06UlseV/lZ1msT18/ny_2FHLDol8VG6VjuFqLZ26/y1nZcgTjUQ/HL5YV0taxU5zFMebw/ouCjKnY1SB67/bctA52f0140/sHpnVH95T_2Fuj/QLIAvGeVws2XTmrrXV3BZ/psxvZSZg2i7jPF9N/caz3S5QCjepHp3W/l6q5V6Mw_2BHygdAjz/QFWLuSVDY/2iEYyTYQm6wj63ekurFy/nVWvwQ5A_2FY6vAZ0b2/ysxIi7hdttfqNZtbDq2s51/_2FLPh7LrbbPo/JhDaZ4qW/MGAYB_2BvyA3HE7Ywiz/pWy HTTP/1.1Accept: text/html, application/xhtml+xml, image/jxr, */*Accept-Language: en-USUser-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; Trident/7.0; rv:11.0) like GeckoAccept-Encoding: gzip, deflateHost: app3.maintorna.comConnection: Keep-Alive
Source: unknown DNS traffic detected: queries for: app.buboleinov.com
Source: global traffic HTTP traffic detected: HTTP/1.1 404 Not FoundServer: nginxDate: Mon, 03 May 2021 16:47:15 GMTContent-Type: text/html; charset=utf-8Transfer-Encoding: chunkedConnection: closeVary: Accept-EncodingContent-Encoding: gzipData Raw: 36 61 0d 0a 1f 8b 08 00 00 00 00 00 00 03 b3 c9 28 c9 cd b1 e3 e5 b2 c9 48 4d 4c b1 b3 29 c9 2c c9 49 b5 33 31 30 51 f0 cb 2f 51 70 cb 2f cd 4b b1 d1 87 08 da e8 83 95 00 95 26 e5 a7 54 82 e8 e4 d4 bc 92 d4 22 3b 9b 0c 43 74 1d 40 11 1b 7d a8 34 c8 6c a0 22 28 2f 2f 3d 33 af 02 59 4e 1f 66 9a 3e d4 25 00 0b d9 61 33 92 00 00 00 0d 0a 30 0d 0a 0d 0a Data Ascii: 6a(HML),I310Q/Qp/K&T";Ct@}4l"(//=3YNf>%a30
Source: ~DF036A3D1EB4248F1E.TMP.19.dr, {A33D02D2-AC7A-11EB-90E5-ECF4BB570DC9}.dat.19.dr String found in binary or memory: http://app.buboleinov.com/u9JBOXOyCt1J/Cqk3pF0_2B2/evko0P1iOLkfYu/tE8kijPwXl6fpTUvGY0L0/uKSRiZsz1TrV
Source: {A33D02D4-AC7A-11EB-90E5-ECF4BB570DC9}.dat.19.dr String found in binary or memory: http://app.buboleinov.com/zWr7XKiLQ_2F3QZ2bR/ZuzwfgbmQ/mjgvv5jUliwpj1wMmSf1/mVwZRrRJ02ozj18W4CC/_2Fq
Source: ~DFE60F766B8C74F7D6.TMP.36.dr, {CDCCBAD9-AC7A-11EB-90E5-ECF4BB570DC9}.dat.36.dr String found in binary or memory: http://app3.maintorna.com/6r_2FD5QsDWTjJjwzHfBaL/2HYJ2K06UlseV/lZ1msT18/ny_2FHLDol8VG6VjuFqLZ26/y1nZ
Source: {CDCCBAD7-AC7A-11EB-90E5-ECF4BB570DC9}.dat.36.dr, ~DF7FEBD80971BE8B6A.TMP.36.dr String found in binary or memory: http://app3.maintorna.com/cDNEPwBarUn/ROJH1XYkRfSClQ/qONBPlQo8FxG6mQW9Ogcz/u7mo1Dj2PullrRPq/bR_2BFpP
Source: {BF692A67-AC7A-11EB-90E5-ECF4BB570DC9}.dat.29.dr, ~DF183688B2D13937F7.TMP.29.dr String found in binary or memory: http://chat.billionady.com/1Z7Zv_2Fo_2BBI/5yyu9xO7U6xQJUAU9LBdU/_2BZsJzv4AW1v4_2/FuBHkCgtXKYNI2J/fjL
Source: {BF692A65-AC7A-11EB-90E5-ECF4BB570DC9}.dat.29.dr String found in binary or memory: http://chat.billionady.com/hPJ75Rz1l0Yg172f0/W92Rc6NrZORu/agJ84T4GWPF/71Su9Jrd5ILrko/1XWo5CLa_2Bx1yc

Key, Mouse, Clipboard, Microphone and Screen Capturing:

barindex
Yara detected Ursnif
Source: Yara match File source: 00000001.00000003.299036321.0000000001670000.00000040.00000001.sdmp, type: MEMORY
Source: Yara match File source: 00000005.00000003.294762520.0000000004D50000.00000040.00000001.sdmp, type: MEMORY
Source: Yara match File source: 00000004.00000003.286919905.0000000003050000.00000040.00000001.sdmp, type: MEMORY
Source: Yara match File source: 00000003.00000003.285453583.0000000003F50000.00000040.00000001.sdmp, type: MEMORY
Source: Yara match File source: 1.3.loaddll32.exe.1678d29.0.raw.unpack, type: UNPACKEDPE
Source: Yara match File source: 4.3.rundll32.exe.3058d29.0.raw.unpack, type: UNPACKEDPE
Source: Yara match File source: 4.2.rundll32.exe.6dd30000.3.unpack, type: UNPACKEDPE
Source: Yara match File source: 1.2.loaddll32.exe.6dd30000.2.unpack, type: UNPACKEDPE
Source: Yara match File source: 3.3.rundll32.exe.3f58d29.0.raw.unpack, type: UNPACKEDPE
Source: Yara match File source: 5.3.rundll32.exe.4d58d29.0.raw.unpack, type: UNPACKEDPE
Yara detected Ursnif
Source: Yara match File source: 00000004.00000003.353402660.0000000005A48000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000004.00000003.353461083.0000000005A48000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000001.00000003.352720988.0000000003D28000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000001.00000003.352839215.0000000003D28000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000001.00000003.352637772.0000000003D28000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000004.00000003.353493626.0000000005A48000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000004.00000003.353527674.0000000005A48000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000004.00000003.353601646.0000000005A48000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000004.00000003.353567176.0000000005A48000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000001.00000003.352699094.0000000003D28000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000001.00000003.352816951.0000000003D28000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000001.00000003.352743659.0000000003D28000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000004.00000003.353611757.0000000005A48000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000001.00000003.352664971.0000000003D28000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000001.00000003.352761373.0000000003D28000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000004.00000003.353343104.0000000005A48000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: Process Memory Space: loaddll32.exe PID: 5720, type: MEMORY
Source: Yara match File source: Process Memory Space: rundll32.exe PID: 5752, type: MEMORY

E-Banking Fraud:

barindex
Yara detected Ursnif
Source: Yara match File source: 00000001.00000003.299036321.0000000001670000.00000040.00000001.sdmp, type: MEMORY
Source: Yara match File source: 00000005.00000003.294762520.0000000004D50000.00000040.00000001.sdmp, type: MEMORY
Source: Yara match File source: 00000004.00000003.286919905.0000000003050000.00000040.00000001.sdmp, type: MEMORY
Source: Yara match File source: 00000003.00000003.285453583.0000000003F50000.00000040.00000001.sdmp, type: MEMORY
Source: Yara match File source: 1.3.loaddll32.exe.1678d29.0.raw.unpack, type: UNPACKEDPE
Source: Yara match File source: 4.3.rundll32.exe.3058d29.0.raw.unpack, type: UNPACKEDPE
Source: Yara match File source: 4.2.rundll32.exe.6dd30000.3.unpack, type: UNPACKEDPE
Source: Yara match File source: 1.2.loaddll32.exe.6dd30000.2.unpack, type: UNPACKEDPE
Source: Yara match File source: 3.3.rundll32.exe.3f58d29.0.raw.unpack, type: UNPACKEDPE
Source: Yara match File source: 5.3.rundll32.exe.4d58d29.0.raw.unpack, type: UNPACKEDPE
Yara detected Ursnif
Source: Yara match File source: 00000004.00000003.353402660.0000000005A48000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000004.00000003.353461083.0000000005A48000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000001.00000003.352720988.0000000003D28000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000001.00000003.352839215.0000000003D28000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000001.00000003.352637772.0000000003D28000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000004.00000003.353493626.0000000005A48000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000004.00000003.353527674.0000000005A48000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000004.00000003.353601646.0000000005A48000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000004.00000003.353567176.0000000005A48000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000001.00000003.352699094.0000000003D28000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000001.00000003.352816951.0000000003D28000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000001.00000003.352743659.0000000003D28000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000004.00000003.353611757.0000000005A48000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000001.00000003.352664971.0000000003D28000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000001.00000003.352761373.0000000003D28000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000004.00000003.353343104.0000000005A48000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: Process Memory Space: loaddll32.exe PID: 5720, type: MEMORY
Source: Yara match File source: Process Memory Space: rundll32.exe PID: 5752, type: MEMORY
Source: C:\Windows\SysWOW64\rundll32.exe Code function: 4_2_033D35A1 CryptAcquireContextW,memcpy,CryptImportKey,CryptSetKeyParam,memcpy,CryptEncrypt,CryptDecrypt,GetLastError,GetLastError,CryptDestroyKey,GetLastError,CryptReleaseContext,GetLastError, 4_2_033D35A1

System Summary:

barindex
Writes or reads registry keys via WMI
Source: C:\Windows\System32\loaddll32.exe WMI Queries: IWbemServices::ExecMethod - root\default : StdRegProv::GetStringValue
Source: C:\Windows\System32\loaddll32.exe WMI Queries: IWbemServices::ExecMethod - root\default : StdRegProv::SetDWORDValue
Source: C:\Windows\System32\loaddll32.exe WMI Queries: IWbemServices::ExecMethod - root\default : StdRegProv::SetBinaryValue
Source: C:\Windows\System32\loaddll32.exe WMI Queries: IWbemServices::ExecMethod - root\default : StdRegProv::SetStringValue
Writes registry values via WMI
Source: C:\Windows\System32\loaddll32.exe WMI Registry write: IWbemServices::ExecMethod - root\default : StdRegProv::SetDWORDValue
Source: C:\Windows\System32\loaddll32.exe WMI Registry write: IWbemServices::ExecMethod - root\default : StdRegProv::SetBinaryValue
Source: C:\Windows\System32\loaddll32.exe WMI Registry write: IWbemServices::ExecMethod - root\default : StdRegProv::SetStringValue
Source: C:\Windows\SysWOW64\rundll32.exe WMI Registry write: IWbemServices::ExecMethod - root\default : StdRegProv::SetDWORDValue
Source: C:\Windows\SysWOW64\rundll32.exe WMI Registry write: IWbemServices::ExecMethod - root\default : StdRegProv::SetBinaryValue
Source: C:\Windows\SysWOW64\rundll32.exe WMI Registry write: IWbemServices::ExecMethod - root\default : StdRegProv::SetStringValue
Contains functionality to call native functions
Source: C:\Windows\System32\loaddll32.exe Code function: 1_2_6DD318D1 GetProcAddress,NtCreateSection,memset, 1_2_6DD318D1
Source: C:\Windows\System32\loaddll32.exe Code function: 1_2_6DD31B89 NtMapViewOfSection, 1_2_6DD31B89
Source: C:\Windows\System32\loaddll32.exe Code function: 1_2_6DD32485 NtQueryVirtualMemory, 1_2_6DD32485
Source: C:\Windows\SysWOW64\rundll32.exe Code function: 4_2_033D3CA1 NtOpenProcess,NtOpenProcessToken,NtQueryInformationToken,NtQueryInformationToken,NtQueryInformationToken,memcpy,NtClose,NtClose, 4_2_033D3CA1
Source: C:\Windows\SysWOW64\rundll32.exe Code function: 4_2_033D81CD NtQueryVirtualMemory, 4_2_033D81CD
Detected potential crypto function
Source: C:\Windows\System32\loaddll32.exe Code function: 1_2_6DD32264 1_2_6DD32264
Source: C:\Windows\System32\loaddll32.exe Code function: 1_2_6DD7348A 1_2_6DD7348A
Source: C:\Windows\System32\loaddll32.exe Code function: 1_2_6DD67AD7 1_2_6DD67AD7
Source: C:\Windows\SysWOW64\rundll32.exe Code function: 4_2_033D7FA8 4_2_033D7FA8
Source: C:\Windows\SysWOW64\rundll32.exe Code function: 4_2_033D6609 4_2_033D6609
Source: C:\Windows\SysWOW64\rundll32.exe Code function: 4_2_6DD7348A 4_2_6DD7348A
Source: C:\Windows\SysWOW64\rundll32.exe Code function: 4_2_6DD67AD7 4_2_6DD67AD7
Sample file is different than original file name gathered from version info
Source: block.dll Binary or memory string: OriginalFilenameHow.dll8 vs block.dll
Uses 32bit PE files
Source: block.dll Static PE information: 32BIT_MACHINE, EXECUTABLE_IMAGE, DLL
Source: classification engine Classification label: mal72.troj.winDLL@24/69@6/2
Source: C:\Windows\SysWOW64\rundll32.exe Code function: 4_2_033D19E7 CreateToolhelp32Snapshot,Process32First,Process32Next,CloseHandle, 4_2_033D19E7
Source: C:\Program Files\internet explorer\iexplore.exe File created: C:\Users\user\AppData\Local\Microsoft\Internet Explorer\Recovery\High\Active\RecoveryStore.{A33D02D0-AC7A-11EB-90E5-ECF4BB570DC9}.dat Jump to behavior
Source: C:\Program Files\internet explorer\iexplore.exe File created: C:\Users\user\AppData\Local\Temp\~DF436970D6C9CDDC13.TMP Jump to behavior
Source: block.dll Static PE information: Section: .text IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_READ
Source: C:\Program Files\internet explorer\iexplore.exe File read: C:\Users\desktop.ini Jump to behavior
Source: C:\Windows\System32\loaddll32.exe Key opened: HKEY_CURRENT_USER\Software\Policies\Microsoft\Windows\Safer\CodeIdentifiers Jump to behavior
Source: C:\Windows\System32\loaddll32.exe Process created: C:\Windows\SysWOW64\rundll32.exe rundll32.exe C:\Users\user\Desktop\block.dll,Pape1
Source: unknown Process created: C:\Windows\System32\loaddll32.exe loaddll32.exe 'C:\Users\user\Desktop\block.dll'
Source: C:\Windows\System32\loaddll32.exe Process created: C:\Windows\SysWOW64\cmd.exe cmd.exe /C rundll32.exe 'C:\Users\user\Desktop\block.dll',#1
Source: C:\Windows\System32\loaddll32.exe Process created: C:\Windows\SysWOW64\rundll32.exe rundll32.exe C:\Users\user\Desktop\block.dll,Pape1
Source: C:\Windows\SysWOW64\cmd.exe Process created: C:\Windows\SysWOW64\rundll32.exe rundll32.exe 'C:\Users\user\Desktop\block.dll',#1
Source: C:\Windows\System32\loaddll32.exe Process created: C:\Windows\SysWOW64\rundll32.exe rundll32.exe C:\Users\user\Desktop\block.dll,Riverslow
Source: unknown Process created: C:\Program Files\internet explorer\iexplore.exe 'C:\Program Files\Internet Explorer\iexplore.exe' -Embedding
Source: C:\Program Files\internet explorer\iexplore.exe Process created: C:\Program Files (x86)\Internet Explorer\iexplore.exe 'C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE' SCODEF:5856 CREDAT:17410 /prefetch:2
Source: C:\Program Files\internet explorer\iexplore.exe Process created: C:\Program Files (x86)\Internet Explorer\iexplore.exe 'C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE' SCODEF:5856 CREDAT:17414 /prefetch:2
Source: unknown Process created: C:\Program Files\internet explorer\iexplore.exe 'C:\Program Files\Internet Explorer\iexplore.exe' -Embedding
Source: C:\Program Files\internet explorer\iexplore.exe Process created: C:\Program Files (x86)\Internet Explorer\iexplore.exe 'C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE' SCODEF:5708 CREDAT:17410 /prefetch:2
Source: C:\Program Files\internet explorer\iexplore.exe Process created: C:\Program Files (x86)\Internet Explorer\iexplore.exe 'C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE' SCODEF:5708 CREDAT:17414 /prefetch:2
Source: unknown Process created: C:\Program Files\internet explorer\iexplore.exe 'C:\Program Files\Internet Explorer\iexplore.exe' -Embedding
Source: C:\Program Files\internet explorer\iexplore.exe Process created: C:\Program Files (x86)\Internet Explorer\iexplore.exe 'C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE' SCODEF:6616 CREDAT:17410 /prefetch:2
Source: C:\Program Files\internet explorer\iexplore.exe Process created: C:\Program Files (x86)\Internet Explorer\iexplore.exe 'C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE' SCODEF:6616 CREDAT:17414 /prefetch:2
Source: C:\Windows\System32\loaddll32.exe Process created: C:\Windows\SysWOW64\cmd.exe cmd.exe /C rundll32.exe 'C:\Users\user\Desktop\block.dll',#1 Jump to behavior
Source: C:\Windows\System32\loaddll32.exe Process created: C:\Windows\SysWOW64\rundll32.exe rundll32.exe C:\Users\user\Desktop\block.dll,Pape1 Jump to behavior
Source: C:\Windows\System32\loaddll32.exe Process created: C:\Windows\SysWOW64\rundll32.exe rundll32.exe C:\Users\user\Desktop\block.dll,Riverslow Jump to behavior
Source: C:\Windows\SysWOW64\cmd.exe Process created: C:\Windows\SysWOW64\rundll32.exe rundll32.exe 'C:\Users\user\Desktop\block.dll',#1 Jump to behavior
Source: C:\Program Files\internet explorer\iexplore.exe Process created: C:\Program Files (x86)\Internet Explorer\iexplore.exe 'C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE' SCODEF:5856 CREDAT:17410 /prefetch:2 Jump to behavior
Source: C:\Program Files\internet explorer\iexplore.exe Process created: C:\Program Files (x86)\Internet Explorer\iexplore.exe 'C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE' SCODEF:5856 CREDAT:17414 /prefetch:2 Jump to behavior
Source: C:\Program Files\internet explorer\iexplore.exe Process created: C:\Program Files (x86)\Internet Explorer\iexplore.exe 'C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE' SCODEF:5708 CREDAT:17410 /prefetch:2 Jump to behavior
Source: C:\Program Files\internet explorer\iexplore.exe Process created: C:\Program Files (x86)\Internet Explorer\iexplore.exe 'C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE' SCODEF:5708 CREDAT:17414 /prefetch:2 Jump to behavior
Source: C:\Program Files\internet explorer\iexplore.exe Process created: C:\Program Files (x86)\Internet Explorer\iexplore.exe 'C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE' SCODEF:6616 CREDAT:17410 /prefetch:2 Jump to behavior
Source: C:\Program Files\internet explorer\iexplore.exe Process created: C:\Program Files (x86)\Internet Explorer\iexplore.exe 'C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE' SCODEF:6616 CREDAT:17414 /prefetch:2 Jump to behavior
Source: C:\Windows\System32\loaddll32.exe Key value queried: HKEY_LOCAL_MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{4590F811-1D3A-11D0-891F-00AA004B2E24}\InprocServer32 Jump to behavior
Source: C:\Windows\SysWOW64\rundll32.exe Automated click: OK
Source: C:\Windows\SysWOW64\rundll32.exe Automated click: OK
Source: Window Recorder Window detected: More than 3 window changes detected
Source: C:\Program Files (x86)\Internet Explorer\iexplore.exe File opened: C:\Program Files (x86)\Java\jre1.8.0_211\bin\msvcr100.dll Jump to behavior
Source: block.dll Static PE information: data directory type: IMAGE_DIRECTORY_ENTRY_IMPORT
Source: block.dll Static PE information: data directory type: IMAGE_DIRECTORY_ENTRY_RESOURCE
Source: block.dll Static PE information: data directory type: IMAGE_DIRECTORY_ENTRY_BASERELOC
Source: block.dll Static PE information: data directory type: IMAGE_DIRECTORY_ENTRY_DEBUG
Source: block.dll Static PE information: data directory type: IMAGE_DIRECTORY_ENTRY_LOAD_CONFIG
Source: block.dll Static PE information: data directory type: IMAGE_DIRECTORY_ENTRY_IAT
Source: block.dll Static PE information: data directory type: IMAGE_DIRECTORY_ENTRY_DEBUG
Source: Binary string: c:\Whether\class\156\Through\How.pdb source: block.dll

Data Obfuscation:

barindex
Contains functionality to dynamically determine API calls
Source: C:\Windows\System32\loaddll32.exe Code function: 1_2_6DD31F31 LoadLibraryA,GetProcAddress, 1_2_6DD31F31
Uses code obfuscation techniques (call, push, ret)
Source: C:\Windows\System32\loaddll32.exe Code function: 1_2_6DD32253 push ecx; ret 1_2_6DD32263
Source: C:\Windows\System32\loaddll32.exe Code function: 1_2_6DD32200 push ecx; ret 1_2_6DD32209
Source: C:\Windows\System32\loaddll32.exe Code function: 1_2_6DD64475 push ecx; ret 1_2_6DD64488
Source: C:\Windows\System32\loaddll32.exe Code function: 1_2_6DD4446A push esi; ret 1_2_6DD4446B
Source: C:\Windows\System32\loaddll32.exe Code function: 1_2_6DD42403 push ebp; retf 1_2_6DD4244E
Source: C:\Windows\System32\loaddll32.exe Code function: 1_2_6DD4243F push ebp; retf 1_2_6DD4244E
Source: C:\Windows\System32\loaddll32.exe Code function: 1_2_6DD4677F push esi; iretd 1_2_6DD4678A
Source: C:\Windows\System32\loaddll32.exe Code function: 1_2_6DD3FE6C push ebx; retf 1_2_6DD3FE6D
Source: C:\Windows\System32\loaddll32.exe Code function: 1_2_6DD45B7B push eax; ret 1_2_6DD45B7C
Source: C:\Windows\System32\loaddll32.exe Code function: 1_2_6DD4633B push edx; retf 1_2_6DD46345
Source: C:\Windows\System32\loaddll32.exe Code function: 1_2_6DD7E175 push ds; iretd 1_2_6DD7E179
Source: C:\Windows\System32\loaddll32.exe Code function: 1_2_6DD7D33E push dword ptr [ecx+4BFFD4DAh]; retf 1_2_6DD7D348
Source: C:\Windows\SysWOW64\rundll32.exe Code function: 4_2_033DB163 push edx; iretd 4_2_033DB164
Source: C:\Windows\SysWOW64\rundll32.exe Code function: 4_2_033D7F97 push ecx; ret 4_2_033D7FA7
Source: C:\Windows\SysWOW64\rundll32.exe Code function: 4_2_033D7C20 push ecx; ret 4_2_033D7C29
Source: C:\Windows\SysWOW64\rundll32.exe Code function: 4_2_033DB67C push ss; retf 4_2_033DB690
Source: C:\Windows\SysWOW64\rundll32.exe Code function: 4_2_6DD64475 push ecx; ret 4_2_6DD64488
Source: C:\Windows\SysWOW64\rundll32.exe Code function: 4_2_6DD4446A push esi; ret 4_2_6DD4446B
Source: C:\Windows\SysWOW64\rundll32.exe Code function: 4_2_6DD42403 push ebp; retf 4_2_6DD4244E
Source: C:\Windows\SysWOW64\rundll32.exe Code function: 4_2_6DD4243F push ebp; retf 4_2_6DD4244E
Source: C:\Windows\SysWOW64\rundll32.exe Code function: 4_2_6DD4677F push esi; iretd 4_2_6DD4678A
Source: C:\Windows\SysWOW64\rundll32.exe Code function: 4_2_6DD3FE6C push ebx; retf 4_2_6DD3FE6D
Source: C:\Windows\SysWOW64\rundll32.exe Code function: 4_2_6DD45B7B push eax; ret 4_2_6DD45B7C
Source: C:\Windows\SysWOW64\rundll32.exe Code function: 4_2_6DD4633B push edx; retf 4_2_6DD46345
Source: C:\Windows\SysWOW64\rundll32.exe Code function: 4_2_6DD7E175 push ds; iretd 4_2_6DD7E179
Source: C:\Windows\SysWOW64\rundll32.exe Code function: 4_2_6DD7D33E push dword ptr [ecx+4BFFD4DAh]; retf 4_2_6DD7D348

Hooking and other Techniques for Hiding and Protection:

barindex
Yara detected Ursnif
Source: Yara match File source: 00000001.00000003.299036321.0000000001670000.00000040.00000001.sdmp, type: MEMORY
Source: Yara match File source: 00000005.00000003.294762520.0000000004D50000.00000040.00000001.sdmp, type: MEMORY
Source: Yara match File source: 00000004.00000003.286919905.0000000003050000.00000040.00000001.sdmp, type: MEMORY
Source: Yara match File source: 00000003.00000003.285453583.0000000003F50000.00000040.00000001.sdmp, type: MEMORY
Source: Yara match File source: 1.3.loaddll32.exe.1678d29.0.raw.unpack, type: UNPACKEDPE
Source: Yara match File source: 4.3.rundll32.exe.3058d29.0.raw.unpack, type: UNPACKEDPE
Source: Yara match File source: 4.2.rundll32.exe.6dd30000.3.unpack, type: UNPACKEDPE
Source: Yara match File source: 1.2.loaddll32.exe.6dd30000.2.unpack, type: UNPACKEDPE
Source: Yara match File source: 3.3.rundll32.exe.3f58d29.0.raw.unpack, type: UNPACKEDPE
Source: Yara match File source: 5.3.rundll32.exe.4d58d29.0.raw.unpack, type: UNPACKEDPE
Yara detected Ursnif
Source: Yara match File source: 00000004.00000003.353402660.0000000005A48000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000004.00000003.353461083.0000000005A48000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000001.00000003.352720988.0000000003D28000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000001.00000003.352839215.0000000003D28000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000001.00000003.352637772.0000000003D28000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000004.00000003.353493626.0000000005A48000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000004.00000003.353527674.0000000005A48000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000004.00000003.353601646.0000000005A48000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000004.00000003.353567176.0000000005A48000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000001.00000003.352699094.0000000003D28000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000001.00000003.352816951.0000000003D28000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000001.00000003.352743659.0000000003D28000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000004.00000003.353611757.0000000005A48000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000001.00000003.352664971.0000000003D28000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000001.00000003.352761373.0000000003D28000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000004.00000003.353343104.0000000005A48000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: Process Memory Space: loaddll32.exe PID: 5720, type: MEMORY
Source: Yara match File source: Process Memory Space: rundll32.exe PID: 5752, type: MEMORY
Monitors certain registry keys / values for changes (often done to protect autostart functionality)
Source: C:\Windows\System32\loaddll32.exe Registry key monitored for changes: HKEY_CURRENT_USER_Classes Jump to behavior
Source: C:\Windows\System32\loaddll32.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\System32\loaddll32.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\SysWOW64\rundll32.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\SysWOW64\rundll32.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\SysWOW64\rundll32.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\SysWOW64\rundll32.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\SysWOW64\rundll32.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\SysWOW64\rundll32.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\SysWOW64\rundll32.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\SysWOW64\rundll32.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\SysWOW64\rundll32.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\SysWOW64\rundll32.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\SysWOW64\rundll32.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\SysWOW64\rundll32.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\SysWOW64\rundll32.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\SysWOW64\rundll32.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\SysWOW64\rundll32.exe Process information set: NOOPENFILEERRORBOX Jump to behavior

Malware Analysis System Evasion:

barindex
Sample execution stops while process was sleeping (likely an evasion)
Source: C:\Windows\SysWOW64\rundll32.exe Last function: Thread delayed
Source: C:\Windows\SysWOW64\rundll32.exe Code function: 4_2_033D4E9C Wow64EnableWow64FsRedirection,RtlAllocateHeap,RtlAllocateHeap,RtlAllocateHeap,memset,CreateFileA,GetFileTime,FindCloseChangeNotification,StrRChrA,lstrcat,FindFirstFileA,FindFirstFileA,CompareFileTime,CompareFileTime,FindClose,FindNextFileA,FindClose,FindFirstFileA,CompareFileTime,StrChrA,memcpy,FindNextFileA,FindClose,FindFirstFileA,CompareFileTime,FindClose,HeapFree,HeapFree, 4_2_033D4E9C

Anti Debugging:

barindex
Contains functionality to dynamically determine API calls
Source: C:\Windows\System32\loaddll32.exe Code function: 1_2_6DD31F31 LoadLibraryA,GetProcAddress, 1_2_6DD31F31
Contains functionality to read the PEB
Source: C:\Windows\System32\loaddll32.exe Code function: 1_2_6DD7BFB5 mov eax, dword ptr fs:[00000030h] 1_2_6DD7BFB5
Source: C:\Windows\System32\loaddll32.exe Code function: 1_2_6DD7BAF2 push dword ptr fs:[00000030h] 1_2_6DD7BAF2
Source: C:\Windows\System32\loaddll32.exe Code function: 1_2_6DD7BEEB mov eax, dword ptr fs:[00000030h] 1_2_6DD7BEEB
Source: C:\Windows\SysWOW64\rundll32.exe Code function: 4_2_6DD7BFB5 mov eax, dword ptr fs:[00000030h] 4_2_6DD7BFB5
Source: C:\Windows\SysWOW64\rundll32.exe Code function: 4_2_6DD7BAF2 push dword ptr fs:[00000030h] 4_2_6DD7BAF2
Source: C:\Windows\SysWOW64\rundll32.exe Code function: 4_2_6DD7BEEB mov eax, dword ptr fs:[00000030h] 4_2_6DD7BEEB

HIPS / PFW / Operating System Protection Evasion:

barindex
Creates a process in suspended mode (likely to inject code)
Source: C:\Windows\SysWOW64\cmd.exe Process created: C:\Windows\SysWOW64\rundll32.exe rundll32.exe 'C:\Users\user\Desktop\block.dll',#1 Jump to behavior
Source: loaddll32.exe, 00000001.00000002.504472454.0000000001AA0000.00000002.00000001.sdmp, rundll32.exe, 00000004.00000002.504863861.00000000035F0000.00000002.00000001.sdmp Binary or memory string: Shell_TrayWnd
Source: loaddll32.exe, 00000001.00000002.504472454.0000000001AA0000.00000002.00000001.sdmp, rundll32.exe, 00000004.00000002.504863861.00000000035F0000.00000002.00000001.sdmp Binary or memory string: Progman
Source: loaddll32.exe, 00000001.00000002.504472454.0000000001AA0000.00000002.00000001.sdmp, rundll32.exe, 00000004.00000002.504863861.00000000035F0000.00000002.00000001.sdmp Binary or memory string: SProgram Managerl
Source: loaddll32.exe, 00000001.00000002.504472454.0000000001AA0000.00000002.00000001.sdmp, rundll32.exe, 00000004.00000002.504863861.00000000035F0000.00000002.00000001.sdmp Binary or memory string: Shell_TrayWnd,
Source: loaddll32.exe, 00000001.00000002.504472454.0000000001AA0000.00000002.00000001.sdmp, rundll32.exe, 00000004.00000002.504863861.00000000035F0000.00000002.00000001.sdmp Binary or memory string: Progmanlock

Language, Device and Operating System Detection:

barindex
Contains functionality to query CPU information (cpuid)
Source: C:\Windows\SysWOW64\rundll32.exe Code function: 4_2_033D3946 cpuid 4_2_033D3946
Contains functionality to query locales information (e.g. system language)
Source: C:\Windows\System32\loaddll32.exe Code function: GetLocaleInfoA,GetSystemDefaultUILanguage,VerLanguageNameA, 1_2_6DD31566
Source: C:\Windows\System32\loaddll32.exe Code function: ___getlocaleinfo,___getlocaleinfo,___getlocaleinfo,___getlocaleinfo,___getlocaleinfo,___getlocaleinfo,___getlocaleinfo,___getlocaleinfo,___getlocaleinfo,___getlocaleinfo,___getlocaleinfo,___getlocaleinfo,___getlocaleinfo,___getlocaleinfo,___getlocaleinfo,___getlocaleinfo,___getlocaleinfo,___getlocaleinfo,___getlocaleinfo,___getlocaleinfo,___getlocaleinfo,___getlocaleinfo,___getlocaleinfo,___getlocaleinfo,___getlocaleinfo,___getlocaleinfo,___getlocaleinfo,___getlocaleinfo,___getlocaleinfo,___getlocaleinfo,___getlocaleinfo,___getlocaleinfo,___getlocaleinfo,___getlocaleinfo,___getlocaleinfo,___getlocaleinfo,___getlocaleinfo,___getlocaleinfo,___getlocaleinfo,___getlocaleinfo,___getlocaleinfo,___getlocaleinfo,___getlocaleinfo,___getlocaleinfo, 1_2_6DD6F574
Source: C:\Windows\System32\loaddll32.exe Code function: _LocaleUpdate::_LocaleUpdate,__crtGetLocaleInfoA_stat, 1_2_6DD75C41
Source: C:\Windows\System32\loaddll32.exe Code function: ___getlocaleinfo,__malloc_crt,__calloc_crt,__calloc_crt,__calloc_crt,__calloc_crt,___crtGetStringTypeA,___crtLCMapStringA,___crtLCMapStringA, 1_2_6DD70133
Source: C:\Windows\System32\loaddll32.exe Code function: __calloc_crt,__malloc_crt,__malloc_crt,___getlocaleinfo,___getlocaleinfo,___getlocaleinfo,___free_lconv_num, 1_2_6DD6FBE2
Source: C:\Windows\System32\loaddll32.exe Code function: ___crtGetLocaleInfoA,___crtGetLocaleInfoA,__calloc_crt,___crtGetLocaleInfoA,__calloc_crt,__invoke_watson,___crtGetLocaleInfoW, 1_2_6DD6D27D
Source: C:\Windows\SysWOW64\rundll32.exe Code function: ___getlocaleinfo,___getlocaleinfo,___getlocaleinfo,___getlocaleinfo,___getlocaleinfo,___getlocaleinfo,___getlocaleinfo,___getlocaleinfo,___getlocaleinfo,___getlocaleinfo,___getlocaleinfo,___getlocaleinfo,___getlocaleinfo,___getlocaleinfo,___getlocaleinfo,___getlocaleinfo,___getlocaleinfo,___getlocaleinfo,___getlocaleinfo,___getlocaleinfo,___getlocaleinfo,___getlocaleinfo,___getlocaleinfo,___getlocaleinfo,___getlocaleinfo,___getlocaleinfo,___getlocaleinfo,___getlocaleinfo,___getlocaleinfo,___getlocaleinfo,___getlocaleinfo,___getlocaleinfo,___getlocaleinfo,___getlocaleinfo,___getlocaleinfo,___getlocaleinfo,___getlocaleinfo,___getlocaleinfo,___getlocaleinfo,___getlocaleinfo,___getlocaleinfo,___getlocaleinfo,___getlocaleinfo,___getlocaleinfo, 4_2_6DD6F574
Source: C:\Windows\SysWOW64\rundll32.exe Code function: _LocaleUpdate::_LocaleUpdate,__crtGetLocaleInfoA_stat, 4_2_6DD75C41
Source: C:\Windows\SysWOW64\rundll32.exe Code function: ___getlocaleinfo,__malloc_crt,__calloc_crt,__calloc_crt,__calloc_crt,__calloc_crt,___crtGetStringTypeA,___crtLCMapStringA,___crtLCMapStringA, 4_2_6DD70133
Source: C:\Windows\SysWOW64\rundll32.exe Code function: __calloc_crt,__malloc_crt,__malloc_crt,___getlocaleinfo,___getlocaleinfo,___getlocaleinfo,___free_lconv_num, 4_2_6DD6FBE2
Source: C:\Windows\SysWOW64\rundll32.exe Code function: ___crtGetLocaleInfoA,___crtGetLocaleInfoA,__calloc_crt,___crtGetLocaleInfoA,__calloc_crt,__invoke_watson,___crtGetLocaleInfoW, 4_2_6DD6D27D
Queries the installation date of Windows
Source: C:\Windows\System32\loaddll32.exe Key value queried: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion InstallDate Jump to behavior
Source: C:\Windows\System32\loaddll32.exe Code function: 1_2_6DD31979 GetSystemTimeAsFileTime,_aulldiv,_snwprintf,CreateFileMappingW,GetLastError,GetLastError,MapViewOfFile,GetLastError,CloseHandle,GetLastError, 1_2_6DD31979
Source: C:\Windows\SysWOW64\rundll32.exe Code function: 4_2_033D3946 wsprintfA,RtlAllocateHeap,GetUserNameW,RtlAllocateHeap,GetUserNameW,HeapFree,GetComputerNameW,GetComputerNameW,RtlAllocateHeap,GetComputerNameW,HeapFree, 4_2_033D3946
Source: C:\Windows\System32\loaddll32.exe Code function: 1_2_6DD3146C CreateEventA,GetVersion,GetCurrentProcessId,OpenProcess,GetLastError, 1_2_6DD3146C
Source: C:\Windows\System32\loaddll32.exe Key value queried: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Cryptography MachineGuid Jump to behavior

Stealing of Sensitive Information:

barindex
Yara detected Ursnif
Source: Yara match File source: 00000001.00000003.299036321.0000000001670000.00000040.00000001.sdmp, type: MEMORY
Source: Yara match File source: 00000005.00000003.294762520.0000000004D50000.00000040.00000001.sdmp, type: MEMORY
Source: Yara match File source: 00000004.00000003.286919905.0000000003050000.00000040.00000001.sdmp, type: MEMORY
Source: Yara match File source: 00000003.00000003.285453583.0000000003F50000.00000040.00000001.sdmp, type: MEMORY
Source: Yara match File source: 1.3.loaddll32.exe.1678d29.0.raw.unpack, type: UNPACKEDPE
Source: Yara match File source: 4.3.rundll32.exe.3058d29.0.raw.unpack, type: UNPACKEDPE
Source: Yara match File source: 4.2.rundll32.exe.6dd30000.3.unpack, type: UNPACKEDPE
Source: Yara match File source: 1.2.loaddll32.exe.6dd30000.2.unpack, type: UNPACKEDPE
Source: Yara match File source: 3.3.rundll32.exe.3f58d29.0.raw.unpack, type: UNPACKEDPE
Source: Yara match File source: 5.3.rundll32.exe.4d58d29.0.raw.unpack, type: UNPACKEDPE
Yara detected Ursnif
Source: Yara match File source: 00000004.00000003.353402660.0000000005A48000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000004.00000003.353461083.0000000005A48000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000001.00000003.352720988.0000000003D28000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000001.00000003.352839215.0000000003D28000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000001.00000003.352637772.0000000003D28000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000004.00000003.353493626.0000000005A48000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000004.00000003.353527674.0000000005A48000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000004.00000003.353601646.0000000005A48000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000004.00000003.353567176.0000000005A48000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000001.00000003.352699094.0000000003D28000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000001.00000003.352816951.0000000003D28000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000001.00000003.352743659.0000000003D28000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000004.00000003.353611757.0000000005A48000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000001.00000003.352664971.0000000003D28000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000001.00000003.352761373.0000000003D28000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000004.00000003.353343104.0000000005A48000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: Process Memory Space: loaddll32.exe PID: 5720, type: MEMORY
Source: Yara match File source: Process Memory Space: rundll32.exe PID: 5752, type: MEMORY

Remote Access Functionality:

barindex
Yara detected Ursnif
Source: Yara match File source: 00000001.00000003.299036321.0000000001670000.00000040.00000001.sdmp, type: MEMORY
Source: Yara match File source: 00000005.00000003.294762520.0000000004D50000.00000040.00000001.sdmp, type: MEMORY
Source: Yara match File source: 00000004.00000003.286919905.0000000003050000.00000040.00000001.sdmp, type: MEMORY
Source: Yara match File source: 00000003.00000003.285453583.0000000003F50000.00000040.00000001.sdmp, type: MEMORY
Source: Yara match File source: 1.3.loaddll32.exe.1678d29.0.raw.unpack, type: UNPACKEDPE
Source: Yara match File source: 4.3.rundll32.exe.3058d29.0.raw.unpack, type: UNPACKEDPE
Source: Yara match File source: 4.2.rundll32.exe.6dd30000.3.unpack, type: UNPACKEDPE
Source: Yara match File source: 1.2.loaddll32.exe.6dd30000.2.unpack, type: UNPACKEDPE
Source: Yara match File source: 3.3.rundll32.exe.3f58d29.0.raw.unpack, type: UNPACKEDPE
Source: Yara match File source: 5.3.rundll32.exe.4d58d29.0.raw.unpack, type: UNPACKEDPE
Yara detected Ursnif
Source: Yara match File source: 00000004.00000003.353402660.0000000005A48000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000004.00000003.353461083.0000000005A48000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000001.00000003.352720988.0000000003D28000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000001.00000003.352839215.0000000003D28000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000001.00000003.352637772.0000000003D28000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000004.00000003.353493626.0000000005A48000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000004.00000003.353527674.0000000005A48000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000004.00000003.353601646.0000000005A48000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000004.00000003.353567176.0000000005A48000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000001.00000003.352699094.0000000003D28000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000001.00000003.352816951.0000000003D28000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000001.00000003.352743659.0000000003D28000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000004.00000003.353611757.0000000005A48000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000001.00000003.352664971.0000000003D28000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000001.00000003.352761373.0000000003D28000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000004.00000003.353343104.0000000005A48000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: Process Memory Space: loaddll32.exe PID: 5720, type: MEMORY
Source: Yara match File source: Process Memory Space: rundll32.exe PID: 5752, type: MEMORY
Hide Legend

Legend:

  • Process
  • Signature
  • Created File
  • DNS/IP Info
  • Is Dropped
  • Is Windows Process
  • Number of created Registry Values
  • Number of created Files
  • Visual Basic
  • Delphi
  • Java
  • .Net C# or VB.NET
  • C, C++ or other language
  • Is malicious
  • Internet
behaviorgraph top1 signatures2 2 Behavior Graph ID: 403080 Sample: block.dll Startdate: 03/05/2021 Architecture: WINDOWS Score: 72 53 Found malware configuration 2->53 55 Yara detected  Ursnif 2->55 57 Yara detected  Ursnif 2->57 7 loaddll32.exe 1 2->7         started        10 iexplore.exe 1 54 2->10         started        13 iexplore.exe 1 53 2->13         started        15 iexplore.exe 1 53 2->15         started        process3 dnsIp4 59 Writes or reads registry keys via WMI 7->59 61 Writes registry values via WMI 7->61 17 rundll32.exe 7->17         started        20 cmd.exe 1 7->20         started        22 rundll32.exe 7->22         started        49 192.168.2.1 unknown unknown 10->49 24 iexplore.exe 38 10->24         started        27 iexplore.exe 33 10->27         started        29 iexplore.exe 35 13->29         started        31 iexplore.exe 35 13->31         started        33 iexplore.exe 15->33         started        35 iexplore.exe 15->35         started        signatures5 process6 dnsIp7 51 Writes registry values via WMI 17->51 37 rundll32.exe 20->37         started        39 app.buboleinov.com 34.86.224.8, 49721, 49722, 49723 GOOGLEUS United States 24->39 41 chat.billionady.com 29->41 43 chat.billionady.com 31->43 45 app3.maintorna.com 33->45 47 app3.maintorna.com 35->47 signatures8 process9
  • No. of IPs < 25%
  • 25% < No. of IPs < 50%
  • 50% < No. of IPs < 75%
  • 75% < No. of IPs

Contacted Public IPs

IP Domain Country Flag ASN ASN Name Malicious
34.86.224.8
app3.maintorna.com United States
15169 GOOGLEUS false

Private

IP
192.168.2.1

Contacted Domains

Name IP Active
app3.maintorna.com 34.86.224.8 true
chat.billionady.com 34.86.224.8 true
app.buboleinov.com 34.86.224.8 true

Contacted URLs

Name Malicious Antivirus Detection Reputation
http://app3.maintorna.com/cDNEPwBarUn/ROJH1XYkRfSClQ/qONBPlQo8FxG6mQW9Ogcz/u7mo1Dj2PullrRPq/bR_2BFpPLx7OhU9/HJBhAhHBzmstPPDOE1/w6ebBa_2B/KX_2BOm6FIW3gd6Bvbnj/Sh9h8HN_2BONCwGgPQr/IY0nkmO9u18wIpqrmMTW3z/GWi0vHa3h_2Bj/6IH92Uhj/Iom39I56_2BMfY2_2BRDxU0/VfXOZ9_2BQ/hDbFynpSdJTA10_2B/DTN9zUXGBVIL/6pinDdbjTIZ/J8liN5BZT7oU_2/FDetd44m1Cdm74WjgwpWw/7RPnYCrU0gXGaG9w/dolpQdALprU5fVz/g9lnmYz4c/oMbk6u false
  • Avira URL Cloud: safe
unknown
http://app.buboleinov.com/zWr7XKiLQ_2F3QZ2bR/ZuzwfgbmQ/mjgvv5jUliwpj1wMmSf1/mVwZRrRJ02ozj18W4CC/_2FqTc0J0ACZs0Zo0yB15V/UkO_2BhXUEjqi/ylcme0uu/h88DPxTz52fwzk2KiAITqAX/y1YkE9ueOd/NzFODbcfeCN_2B548/9jGMMg_2FjQB/TCcN38_2FLl/w78Mf5LsU18OtD/O9ldbeaIz2YOBBV9govEw/if1bIKJhIzR9fYIT/Dva1E7_2F2LcgBj/3WJFp2Il273lx9FN_2/B45JK5S6v/rZZWdDOKWu65eMI2rNKK/RAsOHyLCy3eKhZf_2Fm/CD_2FuANPfLuHGjULRoA2Y/Paqy false
  • Avira URL Cloud: safe
unknown
http://chat.billionady.com/1Z7Zv_2Fo_2BBI/5yyu9xO7U6xQJUAU9LBdU/_2BZsJzv4AW1v4_2/FuBHkCgtXKYNI2J/fjLUpx4yvdGQ9xBWU8/nZ2UCR2Fn/6_2BJUjWbSDTFYEq01IK/G2MuJJozgl6fI_2Bxi6/8WHocMwy1m3c6beo7EybdT/0fZNT0A7jOYrz/ZJgKKaGn/V_2Bc6nIeAMBXcBQSTKS3tI/dRpB7HoFuq/5r0h_2Bic5oCoaHxQ/GZIQmnaYFeN7/lgmkXjg8R1P/o6CJiUeiWxo9TA/Om1BRSx_2BLEYhxw_2B1w/ztx7Xd1V_2BwFgLL/5ttSiFJbfjzPnDR/nMd_2BdWk4HTz_2Ftn/Va7N0lfshKE/mKz false
  • Avira URL Cloud: safe
unknown
http://chat.billionady.com/hPJ75Rz1l0Yg172f0/W92Rc6NrZORu/agJ84T4GWPF/71Su9Jrd5ILrko/1XWo5CLa_2Bx1ycL2fXGF/76IsZupbi6IIIogp/P_2BrqGlfT6Z_2F/9HIF9QL_2Ffn95EjHz/EKpbgAout/m_2FkBfNGzNFhXOxCcqe/1zQKvOOwqE_2B22qrZS/vj3rmMMb_2BsLkd2AZhDC4/602lvjtm6dYcP/dyzgfgBT/A_2BC4eofqol5orEsMEQPWe/zZ6Swnuj_2/FM3kwbNjGbF9dztKO/5Sul25wMK_2F/fSrDDmSQa3P/LwvXQje5tWHJ24/YCtfl_2Bd9Wgni_2B/yKHW false
  • Avira URL Cloud: safe
unknown
http://app3.maintorna.com/6r_2FD5QsDWTjJjwzHfBaL/2HYJ2K06UlseV/lZ1msT18/ny_2FHLDol8VG6VjuFqLZ26/y1nZcgTjUQ/HL5YV0taxU5zFMebw/ouCjKnY1SB67/bctA52f0140/sHpnVH95T_2Fuj/QLIAvGeVws2XTmrrXV3BZ/psxvZSZg2i7jPF9N/caz3S5QCjepHp3W/l6q5V6Mw_2BHygdAjz/QFWLuSVDY/2iEYyTYQm6wj63ekurFy/nVWvwQ5A_2FY6vAZ0b2/ysxIi7hdttfqNZtbDq2s51/_2FLPh7LrbbPo/JhDaZ4qW/MGAYB_2BvyA3HE7Ywiz/pWy false
  • Avira URL Cloud: safe
unknown