Joe Sandbox Cloud Basic Analysis Report

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Windows Analysis Report
Notificaci#U00f3n de pago.exe

Overview

General Information

Sample Name:Notificaci#U00f3n de pago.exe
Analysis ID:626150
MD5:297e8b7f26a2eb1af366cac0202eca9a
SHA1:4b3e36dcd7ea9785f93e43699e1224ad30626148
SHA256:441ba10d2078c45be3d266523f77b59a1478f61ce09f2097ccc276d534c35855
Tags:exe
Infos:

Detection

FormBook
Score:100
Range:0 - 100
Whitelisted:false
Confidence:100%

Signatures

Found malware configuration
Multi AV Scanner detection for submitted file
Yara detected FormBook
Malicious sample detected (through community Yara rule)
Yara detected AntiVM3
System process connects to network (likely due to code injection or exploit)
Sample uses process hollowing technique
Maps a DLL or memory area into another process
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Machine Learning detection for sample
Self deletion via cmd delete
.NET source code contains potential unpacker
Injects a PE file into a foreign processes
.NET source code contains method to dynamically call methods (often used by packers)
Queues an APC in another process (thread injection)
Tries to detect virtualization through RDTSC time measurements
Modifies the context of a thread in another process (thread injection)
C2 URLs / IPs found in malware configuration
Uses 32bit PE files
Queries the volume information (name, serial number etc) of a device
Yara signature match
Antivirus or Machine Learning detection for unpacked file
May sleep (evasive loops) to hinder dynamic analysis
Uses code obfuscation techniques (call, push, ret)
Internet Provider seen in connection with other malware
Detected potential crypto function
Found potential string decryption / allocating functions
Sample execution stops while process was sleeping (likely an evasion)
Contains functionality to call native functions
HTTP GET or POST without a user agent
IP address seen in connection with other malware
Contains functionality for execution timing, often used to detect debuggers
Contains long sleeps (>= 3 min)
Enables debug privileges
Found inlined nop instructions (likely shell or obfuscated code)
Sample file is different than original file name gathered from version info
Contains functionality to read the PEB
Checks if the current process is being debugged
Found large amount of non-executed APIs
Creates a process in suspended mode (likely to inject code)
Contains functionality to access loader functionality (e.g. LdrGetProcedureAddress)

Classification

Process Tree

  • System is w10x64
  • Notificaci#U00f3n de pago.exe (PID: 6360 cmdline: "C:\Users\user\Desktop\Notificaci#U00f3n de pago.exe" MD5: 297E8B7F26A2EB1AF366CAC0202ECA9A)
    • Notificaci#U00f3n de pago.exe (PID: 6968 cmdline: C:\Users\user\Desktop\Notificaci#U00f3n de pago.exe MD5: 297E8B7F26A2EB1AF366CAC0202ECA9A)
      • explorer.exe (PID: 3968 cmdline: C:\Windows\Explorer.EXE MD5: AD5296B280E8F522A8A897C96BAB0E1D)
        • WWAHost.exe (PID: 6172 cmdline: C:\Windows\SysWOW64\WWAHost.exe MD5: 370C260333EB3149EF4E49C8F64652A0)
          • cmd.exe (PID: 6596 cmdline: /c del "C:\Users\user\Desktop\Notificaci#U00f3n de pago.exe" MD5: F3BDBE3BB6F734E357235F4D5898582D)
            • conhost.exe (PID: 6568 cmdline: C:\Windows\system32\conhost.exe 0xffffffff -ForceV1 MD5: EA777DEEA782E8B4D7C7C33BBF8A4496)
  • cleanup

Malware Configuration

Threatname: FormBook

{"C2 list": ["www.hkqhdq.com/d6fp/"], "decoy": ["cwejman.art", "chandlerfeed.site", "team-ctctitleco.com", "yennyalfonsotorres84.com", "letseatdonuts.com", "runicarcanum.com", "info-center.xyz", "stemcanada.net", "granerde.com", "pixelatedkittys.com", "selfservicerepait.com", "lasvegastechman.com", "massage-rino.com", "bfederation.com", "kjy9.com", "homeiexpress.com", "hayatiorhan.com", "89739134.com", "kristin-feireiss-80.com", "zfp2.xyz", "peq2ulps.com", "redgreenbandits.com", "doblehuella.com", "521xiao.com", "freedomadventurescharters.com", "424259842.xyz", "peachfsg.com", "marketery.net", "dubhmor-dg.com", "sustainabilitymantra.xyz", "obivka.site", "yoursjoysled.com", "neurovirtualusa.com", "938323373.com", "seabornecap.com", "rjxingfu.com", "vacationsimplified.com", "elramony.com", "craftivitycrew.com", "cryptoheritageclub.com", "tcr8.fund", "gloumarc.com", "marry-me-today.com", "screator.life", "tokusou-clean.com", "sagesse.agency", "borilius.com", "www-saber.com", "bondjetfuel.com", "sedadbir.com", "interparking-60years.com", "mdartwork.com", "materialy.pro", "theguiriguide.com", "islandacoustical.com", "einfachmalgut.com", "nonstrappedmedia.club", "librevillegabon.com", "wasatchholidayclassic.net", "shanhaiyizhi.com", "triptoasiam.com", "s3industrail.com", "evertribute.com", "marketing-toolbox.com"]}

Yara Signatures

Memory Dumps

SourceRuleDescriptionAuthorStrings
00000008.00000002.383069133.0000000000400000.00000040.00000400.00020000.00000000.sdmpJoeSecurity_FormBookYara detected FormBookJoe Security
    00000008.00000002.383069133.0000000000400000.00000040.00000400.00020000.00000000.sdmpFormbook_1autogenerated rule brought to you by yara-signatorFelix Bilstein - yara-signator at cocacoding dot com
    • 0x8c08:$sequence_0: 03 C8 0F 31 2B C1 89 45 FC
    • 0x8f92:$sequence_0: 03 C8 0F 31 2B C1 89 45 FC
    • 0x16335:$sequence_1: 3C 24 0F 84 76 FF FF FF 3C 25 74 94
    • 0x15de1:$sequence_2: 3B 4F 14 73 95 85 C9 74 91
    • 0x16437:$sequence_3: 3C 69 75 44 8B 7D 18 8B 0F
    • 0x165af:$sequence_4: 5D C3 8D 50 7C 80 FA 07
    • 0x99aa:$sequence_5: 0F BE 5C 0E 01 0F B6 54 0E 02 83 E3 0F C1 EA 06
    • 0x1505c:$sequence_6: 57 89 45 FC 89 45 F4 89 45 F8
    • 0xa722:$sequence_7: 66 89 0C 02 5B 8B E5 5D
    • 0x1b987:$sequence_8: 3C 54 74 04 3C 74 75 F4
    • 0x1ca8a:$sequence_9: 56 68 03 01 00 00 8D 85 95 FE FF FF 6A 00
    00000008.00000002.383069133.0000000000400000.00000040.00000400.00020000.00000000.sdmpFormbookdetect Formbook in memoryJPCERT/CC Incident Response Group
    • 0x18809:$sqlite3step: 68 34 1C 7B E1
    • 0x1891c:$sqlite3step: 68 34 1C 7B E1
    • 0x18838:$sqlite3text: 68 38 2A 90 C5
    • 0x1895d:$sqlite3text: 68 38 2A 90 C5
    • 0x1884b:$sqlite3blob: 68 53 D8 7F 8C
    • 0x18973:$sqlite3blob: 68 53 D8 7F 8C
    00000008.00000002.383525954.0000000001410000.00000040.10000000.00040000.00000000.sdmpJoeSecurity_FormBookYara detected FormBookJoe Security
      00000008.00000002.383525954.0000000001410000.00000040.10000000.00040000.00000000.sdmpFormbook_1autogenerated rule brought to you by yara-signatorFelix Bilstein - yara-signator at cocacoding dot com
      • 0x8c08:$sequence_0: 03 C8 0F 31 2B C1 89 45 FC
      • 0x8f92:$sequence_0: 03 C8 0F 31 2B C1 89 45 FC
      • 0x16335:$sequence_1: 3C 24 0F 84 76 FF FF FF 3C 25 74 94
      • 0x15de1:$sequence_2: 3B 4F 14 73 95 85 C9 74 91
      • 0x16437:$sequence_3: 3C 69 75 44 8B 7D 18 8B 0F
      • 0x165af:$sequence_4: 5D C3 8D 50 7C 80 FA 07
      • 0x99aa:$sequence_5: 0F BE 5C 0E 01 0F B6 54 0E 02 83 E3 0F C1 EA 06
      • 0x1505c:$sequence_6: 57 89 45 FC 89 45 F4 89 45 F8
      • 0xa722:$sequence_7: 66 89 0C 02 5B 8B E5 5D
      • 0x1b987:$sequence_8: 3C 54 74 04 3C 74 75 F4
      • 0x1ca8a:$sequence_9: 56 68 03 01 00 00 8D 85 95 FE FF FF 6A 00
      Click to see the 31 entries

      Unpacked PEs

      SourceRuleDescriptionAuthorStrings
      8.0.Notificaci#U00f3n de pago.exe.400000.4.unpackJoeSecurity_FormBookYara detected FormBookJoe Security
        8.0.Notificaci#U00f3n de pago.exe.400000.4.unpackFormbook_1autogenerated rule brought to you by yara-signatorFelix Bilstein - yara-signator at cocacoding dot com
        • 0x7e08:$sequence_0: 03 C8 0F 31 2B C1 89 45 FC
        • 0x8192:$sequence_0: 03 C8 0F 31 2B C1 89 45 FC
        • 0x15535:$sequence_1: 3C 24 0F 84 76 FF FF FF 3C 25 74 94
        • 0x14fe1:$sequence_2: 3B 4F 14 73 95 85 C9 74 91
        • 0x15637:$sequence_3: 3C 69 75 44 8B 7D 18 8B 0F
        • 0x157af:$sequence_4: 5D C3 8D 50 7C 80 FA 07
        • 0x8baa:$sequence_5: 0F BE 5C 0E 01 0F B6 54 0E 02 83 E3 0F C1 EA 06
        • 0x1425c:$sequence_6: 57 89 45 FC 89 45 F4 89 45 F8
        • 0x9922:$sequence_7: 66 89 0C 02 5B 8B E5 5D
        • 0x1ab87:$sequence_8: 3C 54 74 04 3C 74 75 F4
        • 0x1bc8a:$sequence_9: 56 68 03 01 00 00 8D 85 95 FE FF FF 6A 00
        8.0.Notificaci#U00f3n de pago.exe.400000.4.unpackFormbookdetect Formbook in memoryJPCERT/CC Incident Response Group
        • 0x17a09:$sqlite3step: 68 34 1C 7B E1
        • 0x17b1c:$sqlite3step: 68 34 1C 7B E1
        • 0x17a38:$sqlite3text: 68 38 2A 90 C5
        • 0x17b5d:$sqlite3text: 68 38 2A 90 C5
        • 0x17a4b:$sqlite3blob: 68 53 D8 7F 8C
        • 0x17b73:$sqlite3blob: 68 53 D8 7F 8C
        8.2.Notificaci#U00f3n de pago.exe.400000.0.raw.unpackJoeSecurity_FormBookYara detected FormBookJoe Security
          8.2.Notificaci#U00f3n de pago.exe.400000.0.raw.unpackFormbook_1autogenerated rule brought to you by yara-signatorFelix Bilstein - yara-signator at cocacoding dot com
          • 0x8c08:$sequence_0: 03 C8 0F 31 2B C1 89 45 FC
          • 0x8f92:$sequence_0: 03 C8 0F 31 2B C1 89 45 FC
          • 0x16335:$sequence_1: 3C 24 0F 84 76 FF FF FF 3C 25 74 94
          • 0x15de1:$sequence_2: 3B 4F 14 73 95 85 C9 74 91
          • 0x16437:$sequence_3: 3C 69 75 44 8B 7D 18 8B 0F