Windows
Analysis Report
4f20000.dll
Overview
General Information
Detection
Score: | 76 |
Range: | 0 - 100 |
Whitelisted: | false |
Confidence: | 100% |
Signatures
Classification
- System is w10x64
- loaddll32.exe (PID: 6108 cmdline:
loaddll32. exe "C:\Us ers\user\D esktop\4f2 0000.dll" MD5: 7DEB5DB86C0AC789123DEC286286B938) - cmd.exe (PID: 6180 cmdline:
cmd.exe /C rundll32. exe "C:\Us ers\user\D esktop\4f2 0000.dll", #1 MD5: F3BDBE3BB6F734E357235F4D5898582D) - rundll32.exe (PID: 6208 cmdline:
rundll32.e xe "C:\Use rs\user\De sktop\4f20 000.dll",# 1 MD5: D7CA562B0DB4F4DD0F03A89A1FDAD63D)
- cleanup
{"RSA Public Key": "WkHRFovJwpCCR5K5Nh8VR2q4c9stfUFZS1MHkr0NbHvphiXoTaUlD1/ctLAfC4eNiBry7yNi2pi8XJCO6p3vaVMYHl+Gh8P9CIYtaQY/U+yigzsKNQvo6kcbuYeKw6BstCnvrjwK9kKQY/DLPMQbKCeqq946niDdT4Jo7uaX2Km1i6F5OSZa3LsG21EhcL0odRRu4qIQmj94n5ytXGrD0tBoZlp6o3WFCqV0cRPm/cA75C444IV3sssDjOF/QFpx65JggE4ZkgosS8eInutrg2THDmvWNgzLntcT1UjrHUSzbVYMusnRJJCgoePG+Ilfqw1xUNrgob24M7woWIrC6vhPn01XLrMc+7iDKY4kBpE=", "c2_domain": ["giporedtrip.at", "habpfans.at"], "botnet": "20000", "server": "50", "serpent_key": "gs0W1Y167ccgpQOG", "sleep_time": "1", "CONF_TIMEOUT": "20", "SetWaitableTimer_value": "0"}
Source | Rule | Description | Author | Strings |
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JoeSecurity_Ursnif_1 | Yara detected Ursnif | Joe Security |
System Summary |
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Source: | Author: Florian Roth: |
Click to jump to signature section
AV Detection |
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Source: | Avira: |
Source: | Malware Configuration Extractor: |
Source: | ReversingLabs: |
Source: | Static PE information: |
Key, Mouse, Clipboard, Microphone and Screen Capturing |
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Source: | File source: |
E-Banking Fraud |
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Source: | File source: |
System Summary |
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Source: | Static PE information: |
Source: | Static PE information: |
Source: | Section loaded: | Jump to behavior | ||
Source: | Section loaded: | Jump to behavior | ||
Source: | Section loaded: | Jump to behavior | ||
Source: | Section loaded: | Jump to behavior |
Source: | ReversingLabs: |
Source: | Static PE information: |
Source: | Key opened: | Jump to behavior |
Source: | Classification label: |
Source: | Process created: |
Source: | Process created: | |||
Source: | Process created: | |||
Source: | Process created: | |||
Source: | Process created: | Jump to behavior | ||
Source: | Process created: | Jump to behavior |
Hooking and other Techniques for Hiding and Protection |
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Source: | File source: |
Source: | Process information set: | Jump to behavior |
Source: | Thread injection, dropped files, key value created, disk infection and DNS query: |
Source: | Thread injection, dropped files, key value created, disk infection and DNS query: |
Source: | Process queried: | Jump to behavior |
Source: | Process created: | Jump to behavior |
Stealing of Sensitive Information |
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Source: | File source: |
Remote Access Functionality |
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Source: | File source: |
Initial Access | Execution | Persistence | Privilege Escalation | Defense Evasion | Credential Access | Discovery | Lateral Movement | Collection | Exfiltration | Command and Control | Network Effects | Remote Service Effects | Impact |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Valid Accounts | Windows Management Instrumentation | 1 DLL Side-Loading | 11 Process Injection | 1 Virtualization/Sandbox Evasion | OS Credential Dumping | 1 Security Software Discovery | Remote Services | Data from Local System | Exfiltration Over Other Network Medium | Data Obfuscation | Eavesdrop on Insecure Network Communication | Remotely Track Device Without Authorization | Modify System Partition |
Default Accounts | Scheduled Task/Job | Boot or Logon Initialization Scripts | 1 DLL Side-Loading | 1 Rundll32 | LSASS Memory | 1 Virtualization/Sandbox Evasion | Remote Desktop Protocol | Data from Removable Media | Exfiltration Over Bluetooth | Junk Data | Exploit SS7 to Redirect Phone Calls/SMS | Remotely Wipe Data Without Authorization | Device Lockout |
Domain Accounts | At (Linux) | Logon Script (Windows) | Logon Script (Windows) | 11 Process Injection | Security Account Manager | 1 System Information Discovery | SMB/Windows Admin Shares | Data from Network Shared Drive | Automated Exfiltration | Steganography | Exploit SS7 to Track Device Location | Obtain Device Cloud Backups | Delete Device Data |
Local Accounts | At (Windows) | Logon Script (Mac) | Logon Script (Mac) | 1 DLL Side-Loading | NTDS | System Network Configuration Discovery | Distributed Component Object Model | Input Capture | Scheduled Transfer | Protocol Impersonation | SIM Card Swap | Carrier Billing Fraud |
This section contains all screenshots as thumbnails, including those not shown in the slideshow.
Source | Detection | Scanner | Label | Link |
---|---|---|---|---|
44% | ReversingLabs | Win32.Trojan.Ursnif | ||
100% | Avira | HEUR/AGEN.1108168 |
Joe Sandbox Version: | 34.0.0 Boulder Opal |
Analysis ID: | 561399 |
Start date: | 27.01.2022 |
Start time: | 13:04:25 |
Joe Sandbox Product: | CloudBasic |
Overall analysis duration: | 0h 6m 53s |
Hypervisor based Inspection enabled: | false |
Report type: | full |
Sample file name: | 4f20000.dll |
Cookbook file name: | default.jbs |
Analysis system description: | Windows 10 64 bit v1803 with Office Professional Plus 2016, Chrome 85, IE 11, Adobe Reader DC 19, Java 8 Update 211 |
Number of analysed new started processes analysed: | 23 |
Number of new started drivers analysed: | 0 |
Number of existing processes analysed: | 0 |
Number of existing drivers analysed: | 0 |
Number of injected processes analysed: | 0 |
Technologies: |
|
Analysis Mode: | default |
Analysis stop reason: | Timeout |
Detection: | MAL |
Classification: | mal76.troj.winDLL@5/0@0/0 |
EGA Information: | Failed |
HDC Information: | Failed |
HCA Information: |
|
Cookbook Comments: |
|
- Exclude process from analysis (whitelisted): MpCmdRun.exe, audiodg.exe, BackgroundTransferHost.exe, WMIADAP.exe, SgrmBroker.exe, backgroundTaskHost.exe, conhost.exe, svchost.exe, wuapihost.exe
- Excluded domains from analysis (whitelisted): ris.api.iris.microsoft.com, client.wns.windows.com, fs.microsoft.com, ctldl.windowsupdate.com, displaycatalog.mp.microsoft.com, img-prod-cms-rt-microsoft-com.akamaized.net, arc.msn.com
- Not all processes where analyzed, report is missing behavior information
File type: | |
Entropy (8bit): | 6.642183906069939 |
TrID: |
|
File name: | 4f20000.dll |
File size: | 44032 |
MD5: | 50ec25e826f1e5401fd1f0af760ca2b0 |
SHA1: | 593dda97ae3c106e61137693d206a893bbd81a45 |
SHA256: | fbe7cb98973b46d24031d2b592acf21dba0918af11149fd55a6e04095d9e25cf |
SHA512: | ad4ca6e54116a0abbcc59dbafa8e317bf900e8df9055125385f0383661fc0cd4a7b49dc1c247a32fe8a1c5fe3d43f2b48434f6c394fd47f8d3d7a7e82f4a3c18 |
SSDEEP: | 768:nvzrV7OnN1mH9tVsnhnBHAqCl5EhKza3u6JBJqV30ciNjOzzce10W:nvz57o1ytyhnBQl5Eb1JBJqV30fjOzzt |
File Content Preview: | MZ......................@...............................................!..L.!This program cannot be run in DOS mode....$.......7...s...s...s...Tn..r...z.+.u...Tn..p...s...........p.......r.......p...Tn..\...Tn..r...Tn..r...Richs...................PE..L.. |
Icon Hash: | 74f0e4ecccdce0e4 |
Entrypoint: | 0x10001b2e |
Entrypoint Section: | .text |
Digitally signed: | false |
Imagebase: | 0x10000000 |
Subsystem: | windows gui |
Image File Characteristics: | 32BIT_MACHINE, EXECUTABLE_IMAGE, DLL |
DLL Characteristics: | |
Time Stamp: | 0x61C89934 [Sun Dec 26 16:32:52 2021 UTC] |
TLS Callbacks: | |
CLR (.Net) Version: | |
OS Version Major: | 4 |
OS Version Minor: | 0 |
File Version Major: | 4 |
File Version Minor: | 0 |
Subsystem Version Major: | 4 |
Subsystem Version Minor: | 0 |
Import Hash: |
Instruction |
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mov eax, dword ptr [esp+08h] |
push esi |
xor esi, esi |
inc esi |
sub eax, 00000000h |
je 00007FBAE8AC3E25h |
dec eax |
jne 00007FBAE8AC3E36h |
push 1000A294h |
call dword ptr [10009034h] |
cmp eax, esi |
jne 00007FBAE8AC3E27h |
push dword ptr [esp+08h] |
call 00007FBAE8AC8FE1h |
test eax, eax |
je 00007FBAE8AC3E1Ah |
xor esi, esi |
jmp 00007FBAE8AC3E16h |
push 1000A294h |
call dword ptr [10009038h] |
test eax, eax |
jne 00007FBAE8AC3E07h |
call 00007FBAE8AC4353h |
mov eax, esi |
pop esi |
retn 000Ch |
push ebp |
mov ebp, esp |
sub esp, 0000011Ch |
and dword ptr [ebp-04h], 00000000h |
push ebx |
push esi |
push edi |
mov edi, dword ptr [ebp+14h] |
test edi, edi |
je 00007FBAE8AC3E60h |
cmp edi, 08h |
jbe 00007FBAE8AC3FF6h |
lea eax, dword ptr [edi+2Ah] |
cmp eax, 00000104h |
jnc 00007FBAE8AC3FE8h |
push 0000005Fh |
push dword ptr [ebp+0Ch] |
call dword ptr [1000A110h] |
test eax, eax |
jne 00007FBAE8AC3FD5h |
mov edx, dword ptr [ebp+0Ch] |
lea eax, dword ptr [ebp-00000118h] |
push eax |
mov eax, edi |
call 00007FBAE8AC9CD7h |
push dword ptr [1000A39Ch] |
lea eax, dword ptr [ebp+edi-00000117h] |
push eax |
call dword ptr [10009058h] |
mov byte ptr [ebp+edi-00000118h], 0000005Ch |
mov ebx, 80000003h |
jmp 00007FBAE8AC3E1Ah |
push dword ptr [1000A39Ch] |
lea eax, dword ptr [ebp+000000E8h] |
Programming Language: |
|
Name | Virtual Address | Virtual Size | Is in Section |
---|---|---|---|
IMAGE_DIRECTORY_ENTRY_EXPORT | 0x9f00 | 0x32 | .rdata |
IMAGE_DIRECTORY_ENTRY_IMPORT | 0x9788 | 0x64 | .rdata |
IMAGE_DIRECTORY_ENTRY_RESOURCE | 0x0 | 0x0 | |
IMAGE_DIRECTORY_ENTRY_EXCEPTION | 0x0 | 0x0 | |
IMAGE_DIRECTORY_ENTRY_SECURITY | 0x0 | 0x0 | |
IMAGE_DIRECTORY_ENTRY_BASERELOC | 0xc000 | 0x708 | .reloc |
IMAGE_DIRECTORY_ENTRY_DEBUG | 0x0 | 0x0 | |
IMAGE_DIRECTORY_ENTRY_COPYRIGHT | 0x0 | 0x0 | |
IMAGE_DIRECTORY_ENTRY_GLOBALPTR | 0x0 | 0x0 | |
IMAGE_DIRECTORY_ENTRY_TLS | 0x0 | 0x0 | |
IMAGE_DIRECTORY_ENTRY_LOAD_CONFIG | 0x0 | 0x0 | |
IMAGE_DIRECTORY_ENTRY_BOUND_IMPORT | 0x0 | 0x0 | |
IMAGE_DIRECTORY_ENTRY_IAT | 0x9000 | 0x15c | .rdata |
IMAGE_DIRECTORY_ENTRY_DELAY_IMPORT | 0x92c4 | 0xc0 | .rdata |
IMAGE_DIRECTORY_ENTRY_COM_DESCRIPTOR | 0x0 | 0x0 | |
IMAGE_DIRECTORY_ENTRY_RESERVED | 0x0 | 0x0 |
Name | Virtual Address | Virtual Size | Raw Size | Xored PE | ZLIB Complexity | File Type | Entropy | Characteristics |
---|---|---|---|---|---|---|---|---|
.text | 0x1000 | 0x7517 | 0x7600 | False | 0.625695180085 | data | 6.55366161184 | IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_READ |
.rdata | 0x9000 | 0xf32 | 0x1000 | False | 0.46337890625 | data | 4.73749741266 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ |
.data | 0xa000 | 0x3a8 | 0x200 | False | 0.4765625 | ARJ archive data, v146, backup, original name: , | 3.01781487841 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_WRITE, IMAGE_SCN_MEM_READ |
.bss | 0xb000 | 0xeb6 | 0x1000 | False | 0.90185546875 | data | 7.52324019021 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_WRITE, IMAGE_SCN_MEM_READ |
.reloc | 0xc000 | 0x1000 | 0x1000 | False | 0.569091796875 | data | 5.19359828931 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ |
Click to jump to process
Click to jump to process
Click to jump to process
Target ID: | 0 |
Start time: | 13:05:30 |
Start date: | 27/01/2022 |
Path: | C:\Windows\System32\loaddll32.exe |
Wow64 process (32bit): | true |
Commandline: | |
Imagebase: | 0x160000 |
File size: | 116736 bytes |
MD5 hash: | 7DEB5DB86C0AC789123DEC286286B938 |
Has elevated privileges: | true |
Has administrator privileges: | true |
Programmed in: | C, C++ or other language |
Reputation: | high |
Target ID: | 2 |
Start time: | 13:05:31 |
Start date: | 27/01/2022 |
Path: | C:\Windows\SysWOW64\cmd.exe |
Wow64 process (32bit): | true |
Commandline: | |
Imagebase: | 0x870000 |
File size: | 232960 bytes |
MD5 hash: | F3BDBE3BB6F734E357235F4D5898582D |
Has elevated privileges: | true |
Has administrator privileges: | true |
Programmed in: | C, C++ or other language |
Reputation: | high |
Target ID: | 3 |
Start time: | 13:05:32 |
Start date: | 27/01/2022 |
Path: | C:\Windows\SysWOW64\rundll32.exe |
Wow64 process (32bit): | true |
Commandline: | |
Imagebase: | 0x3f0000 |
File size: | 61952 bytes |
MD5 hash: | D7CA562B0DB4F4DD0F03A89A1FDAD63D |
Has elevated privileges: | true |
Has administrator privileges: | true |
Programmed in: | C, C++ or other language |
Reputation: | high |