ramnit | 8f6f82fe539aafc885ecb259542008abbfbdea143b5f15dd5d52b5f0f8ce1e27

Analysis

max time kernel
149s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
18/04/2024, 00:08

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General

Target
8f6f82fe539aafc885ecb259542008abbfbdea143b5f15dd5d52b5f0f8ce1e27.dll
Size 372KB
Sample240418-afcbtscb5z
SHA256 8f6f82fe539aafc885ecb259542008abbfbdea143b5f15dd5d52b5f0f8ce1e27
MD5 ea63f1288d787af560bf5937e8b7ea0f
SHA1 f52b1794c05f562486bec45f9f8ba26520308fee
SHA512 adedff425c8f6f4d2a2b10ce02dfb3b05f7bf153fc3f4ca594badfbca9af56ebf0be9601d5a66f7c5919385214084491151981585a177d1c34cf42ba37a8a711
SSDEEP 6144:kqs7N/qdkOpEhSm7fSsTEPssU5qqDrSyhsTZI8M8FgUMI:kwpEhSKsU0qKYLP
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

ramnit banker spyware stealer trojan upx worm

Malware Config

Signatures

Ramnit
Ramnit is a versatile family that holds viruses, worms, and Trojans.
trojan spyware stealer worm banker ramnit

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/files/0x0005000000023256-3.dat	UPX
behavioral2/memory/3048-4-0x0000000000400000-0x000000000042E000-memory.dmp	UPX
behavioral2/memory/3048-8-0x0000000000400000-0x000000000042E000-memory.dmp	UPX
behavioral2/memory/4432-14-0x0000000000400000-0x000000000042E000-memory.dmp	UPX

Executes dropped EXE 2 IoCs

pid	Process
3048	rundll32Srv.exe
4432	DesktopLayer.exe

UPX packed file 4 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/files/0x0005000000023256-3.dat	upx
behavioral2/memory/3048-4-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral2/memory/3048-8-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral2/memory/4432-14-0x0000000000400000-0x000000000042E000-memory.dmp	upx

Drops file in System32 directory 1 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\rundll32Srv.exe	rundll32.exe

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Microsoft\px325A.tmp	rundll32Srv.exe
File created	C:\Program Files (x86)\Microsoft\DesktopLayer.exe	rundll32Srv.exe
File opened for modification	C:\Program Files (x86)\Microsoft\DesktopLayer.exe	rundll32Srv.exe

Modifies Internet Explorer settings 1 TTPs 32 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Set value (data)	\REGISTRY\USER\S-1-5-21-355664440-2199602304-1223909400-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-355664440-2199602304-1223909400-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-355664440-2199602304-1223909400-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-355664440-2199602304-1223909400-1000\Software\Microsoft\Internet Explorer\VersionManager	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-355664440-2199602304-1223909400-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "2916749184"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-355664440-2199602304-1223909400-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31101220"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-355664440-2199602304-1223909400-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-355664440-2199602304-1223909400-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-355664440-2199602304-1223909400-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-355664440-2199602304-1223909400-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-355664440-2199602304-1223909400-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "420163911"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-355664440-2199602304-1223909400-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-355664440-2199602304-1223909400-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-355664440-2199602304-1223909400-1000\Software\Microsoft\Internet Explorer\GPU	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-355664440-2199602304-1223909400-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-355664440-2199602304-1223909400-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-355664440-2199602304-1223909400-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-355664440-2199602304-1223909400-1000\Software\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-355664440-2199602304-1223909400-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-355664440-2199602304-1223909400-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-355664440-2199602304-1223909400-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-355664440-2199602304-1223909400-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "2915343112"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-355664440-2199602304-1223909400-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31101220"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-355664440-2199602304-1223909400-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "2916749184"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-355664440-2199602304-1223909400-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{D940D4C2-FD17-11EE-9C51-FE3D71A59E2B} = "0"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-355664440-2199602304-1223909400-1000\SOFTWARE\Microsoft\Internet Explorer\GPU\AdapterInfo = "vendorId=\"0x10de\",deviceID=\"0x8c\",subSysID=\"0x0\",revision=\"0x0\",version=\"10.0.19041.546\"hypervisor=\"No Hypervisor (No SLAT)\""	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-355664440-2199602304-1223909400-1000\Software\Microsoft\Internet Explorer\VersionManager	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-355664440-2199602304-1223909400-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-355664440-2199602304-1223909400-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-355664440-2199602304-1223909400-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31101220"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-355664440-2199602304-1223909400-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "2915343112"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-355664440-2199602304-1223909400-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31101220"	IEXPLORE.EXE

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
4432	DesktopLayer.exe
4432	DesktopLayer.exe
4432	DesktopLayer.exe
4432	DesktopLayer.exe
4432	DesktopLayer.exe
4432	DesktopLayer.exe
4432	DesktopLayer.exe
4432	DesktopLayer.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
1412	iexplore.exe

Suspicious use of SetWindowsHookEx 6 IoCs

pid	Process
1412	iexplore.exe
1412	iexplore.exe
2480	IEXPLORE.EXE
2480	IEXPLORE.EXE
2480	IEXPLORE.EXE
2480	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 2936 wrote to memory of 4820	2936	rundll32.exe	83
PID 2936 wrote to memory of 4820	2936	rundll32.exe	83
PID 2936 wrote to memory of 4820	2936	rundll32.exe	83
PID 4820 wrote to memory of 3048	4820	rundll32.exe	85
PID 4820 wrote to memory of 3048	4820	rundll32.exe	85
PID 4820 wrote to memory of 3048	4820	rundll32.exe	85
PID 3048 wrote to memory of 4432	3048	rundll32Srv.exe	86
PID 3048 wrote to memory of 4432	3048	rundll32Srv.exe	86
PID 3048 wrote to memory of 4432	3048	rundll32Srv.exe	86
PID 4432 wrote to memory of 1412	4432	DesktopLayer.exe	87
PID 4432 wrote to memory of 1412	4432	DesktopLayer.exe	87
PID 1412 wrote to memory of 2480	1412	iexplore.exe	89
PID 1412 wrote to memory of 2480	1412	iexplore.exe	89
PID 1412 wrote to memory of 2480	1412	iexplore.exe	89

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\8f6f82fe539aafc885ecb259542008abbfbdea143b5f15dd5d52b5f0f8ce1e27.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2936
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\8f6f82fe539aafc885ecb259542008abbfbdea143b5f15dd5d52b5f0f8ce1e27.dll,#1
  2⤵
  - Drops file in System32 directory
  - Suspicious use of WriteProcessMemory
  PID:4820
- - C:\Windows\SysWOW64\rundll32Srv.exe
    C:\Windows\SysWOW64\rundll32Srv.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Program Files directory
    - Suspicious use of WriteProcessMemory
    PID:3048
  - - C:\Program Files (x86)\Microsoft\DesktopLayer.exe
      "C:\Program Files (x86)\Microsoft\DesktopLayer.exe"
      4⤵
      Executes dropped EXE
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of WriteProcessMemory
      PID:4432
    - - C:\Program Files\Internet Explorer\iexplore.exe
        
        "C:\Program Files\Internet Explorer\iexplore.exe"
        5⤵
        Modifies Internet Explorer settings
        Suspicious use of FindShellTrayWindow
        Suspicious use of SetWindowsHookEx
        Suspicious use of WriteProcessMemory
        
        PID:1412
      - C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1412 CREDAT:17410 /prefetch:2
        6⤵
        Modifies Internet Explorer settings
        Suspicious use of SetWindowsHookEx
        
        PID:2480

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

verAA88.tmp

Path C:\Users\Admin\AppData\Local\Microsoft\Internet Explorer\VersionManager\verAA88.tmp
Size 15KB
SHA256 557472aeaebf4c1c800b9df14c190f66d62cbabb011300dbedde2dcddd27a6c1
MD5 1a545d0052b581fbb2ab4c52133846bc
SHA1 62f3266a9b9925cd6d98658b92adec673cbe3dd3
SHA512 bd326d111589d87cd6d019378ec725ac9ac7ad4c36f22453941f7d52f90b747ede4783a83dfff6cae1b3bb46690ad49cffa77f2afda019b22863ac485b406e8d
SSDEEP 384:79Jv9DF9/C9qc9/J9V791T9TK9Xf9Nm9xQ95a9BR9fV:79Jv9DF9/C9qc9/J9V791T9TK9Xf9NmT
MD5 SHA1 SHA512 SSDEEP

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suggestions[1].en-US

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\M6O2ZN5Q\suggestions[1].en-US
Size 17KB
SHA256 c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad
MD5 5a34cb996293fde2cb7a4ac89587393a
SHA1 3c96c993500690d1a77873cd62bc639b3a10653f
SHA512 e1b7d0107733f81937415104e70f68b1be6fd0ca65dccf4ff72637943d44278d3a77f704aedff59d2dbc0d56a609b2590c8ec0dd6bc48ab30f1dad0c07a0a3ee
SSDEEP 384:K4gN8sGygaEKfWYSJUKbO7UckxtBjCdY7mO3D0C5l+piEieDSV126ry1/XSGKwG3:K4gNFXiKfWfJ1Kockxbd7mAt5Mp5ie2F
MD5 SHA1 SHA512 SSDEEP

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rundll32Srv.exe

Path C:\Windows\SysWOW64\rundll32Srv.exe
Size 55KB
SHA256 fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320
MD5 ff5e1f27193ce51eec318714ef038bef
SHA1 b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6
SHA512 c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a
SSDEEP 1536:Q+hzRsibKplyXTq8OGRnsPFG+RODTb7MXL5uXZnzE:bROzoTq0+RO7IwnY
MD5 SHA1 SHA512 SSDEEP

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memory/3048-4-0x0000000000400000-0x000000000042E000-memory.dmp

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memory/3048-8-0x0000000000400000-0x000000000042E000-memory.dmp

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memory/3048-5-0x00000000006A0000-0x00000000006AF000-memory.dmp

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memory/4432-13-0x0000000001F50000-0x0000000001F51000-memory.dmp

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memory/4432-15-0x0000000077742000-0x0000000077743000-memory.dmp

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memory/4432-16-0x0000000000580000-0x000000000058F000-memory.dmp

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memory/4432-18-0x0000000077742000-0x0000000077743000-memory.dmp

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memory/4432-19-0x0000000077742000-0x0000000077743000-memory.dmp

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memory/4432-14-0x0000000000400000-0x000000000042E000-memory.dmp

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memory/4820-0-0x0000000010000000-0x000000001005F000-memory.dmp

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