ramnit | d95cb9eb34bf8a32f075c83d4d2badc5eeeee69d8c1ef4c9d1883899d745a149

Analysis

max time kernel
137s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
02/05/2024, 01:28

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General

Target
HID.dll
Size 832KB
Sample240502-bvzaksdb4s
SHA256 885fa2612fd39c55572ce0e8c87183505a1e93b6e5b014b2c6f72d217a41032c
MD5 787253ad5c2012fc889e80b2fb6742a1
SHA1 e0549ffe6d8c124ee86693b8393d169ceeb692a0
SHA512 b9dec41e7ee61bfb3b325b1ddbf90502edf0accce349d5d62f13ead7c8549e7ba2ec90f3c8c4f827f49933057dedc6926345deaccb13d12a12cdfe7d6da646c8
SSDEEP 12288:fixEvuxzhaaWtbL5cT6/OUo9PzrDPzL0wFgmq:fTuzFWt5ce/9o9rHzL0tm
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

Executes dropped EXE 2 IoCs

pid	Process
1820	rundll32Srv.exe
5072	DesktopLayer.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000d000000023b73-3.dat	upx
behavioral2/memory/1820-5-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral2/memory/5072-11-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral2/memory/5072-18-0x0000000000400000-0x000000000042E000-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\DesktopLayer.exe	rundll32Srv.exe
File opened for modification	C:\Program Files (x86)\Microsoft\px38A4.tmp	rundll32Srv.exe
File created	C:\Program Files (x86)\Microsoft\DesktopLayer.exe	rundll32Srv.exe

Modifies Internet Explorer settings 1 TTPs 30 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3726321484-1950364574-433157660-1000\Software\Microsoft\Internet Explorer\VersionManager	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-3726321484-1950364574-433157660-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3726321484-1950364574-433157660-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3726321484-1950364574-433157660-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3726321484-1950364574-433157660-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3726321484-1950364574-433157660-1000\Software\Microsoft\Internet Explorer\VersionManager	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3726321484-1950364574-433157660-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31104048"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3726321484-1950364574-433157660-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3726321484-1950364574-433157660-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3726321484-1950364574-433157660-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "627347038"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3726321484-1950364574-433157660-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "629690804"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-3726321484-1950364574-433157660-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3726321484-1950364574-433157660-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3726321484-1950364574-433157660-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{51022A85-0823-11EF-8ED9-4AD5DB239FB5} = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3726321484-1950364574-433157660-1000\Software\Microsoft\Internet Explorer\GPU	IEXPLORE.EXE
Set value (data)	\REGISTRY\USER\S-1-5-21-3726321484-1950364574-433157660-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3726321484-1950364574-433157660-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3726321484-1950364574-433157660-1000\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
Set value (int)	\REGISTRY\USER\S-1-5-21-3726321484-1950364574-433157660-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31104048"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3726321484-1950364574-433157660-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "421378299"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3726321484-1950364574-433157660-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-3726321484-1950364574-433157660-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "627347038"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3726321484-1950364574-433157660-1000\Software\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3726321484-1950364574-433157660-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3726321484-1950364574-433157660-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3726321484-1950364574-433157660-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31104048"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-3726321484-1950364574-433157660-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3726321484-1950364574-433157660-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3726321484-1950364574-433157660-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3726321484-1950364574-433157660-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1"	iexplore.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
5072	DesktopLayer.exe
5072	DesktopLayer.exe
5072	DesktopLayer.exe
5072	DesktopLayer.exe
5072	DesktopLayer.exe
5072	DesktopLayer.exe
5072	DesktopLayer.exe
5072	DesktopLayer.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
1080	iexplore.exe

Suspicious use of SetWindowsHookEx 7 IoCs

pid	Process
2508	rundll32.exe
1080	iexplore.exe
1080	iexplore.exe
4440	IEXPLORE.EXE
4440	IEXPLORE.EXE
4440	IEXPLORE.EXE
4440	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 1496 wrote to memory of 2508	1496	rundll32.exe	84
PID 1496 wrote to memory of 2508	1496	rundll32.exe	84
PID 1496 wrote to memory of 2508	1496	rundll32.exe	84
PID 2508 wrote to memory of 1820	2508	rundll32.exe	85
PID 2508 wrote to memory of 1820	2508	rundll32.exe	85
PID 2508 wrote to memory of 1820	2508	rundll32.exe	85
PID 1820 wrote to memory of 5072	1820	rundll32Srv.exe	86
PID 1820 wrote to memory of 5072	1820	rundll32Srv.exe	86
PID 1820 wrote to memory of 5072	1820	rundll32Srv.exe	86
PID 5072 wrote to memory of 1080	5072	DesktopLayer.exe	87
PID 5072 wrote to memory of 1080	5072	DesktopLayer.exe	87
PID 1080 wrote to memory of 4440	1080	iexplore.exe	88
PID 1080 wrote to memory of 4440	1080	iexplore.exe	88
PID 1080 wrote to memory of 4440	1080	iexplore.exe	88

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\HID.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1496
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\HID.dll,#1
  2⤵
  - Drops file in System32 directory
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2508
- - 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:1820
  - - 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:5072
    - - 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:1080
      - C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1080 CREDAT:17410 /prefetch:2
        6⤵
        Modifies Internet Explorer settings
        Suspicious use of SetWindowsHookEx
        
        PID:4440

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

7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776
Size 471B
SHA256 1da58724f00f0235958c6f7d7f78e1ddf7b9ff7592c9cc1e113c50c3948e19e9
MD5 7dcd658f7257514c95d9237ee57e25f4
SHA1 c762ec9bfb992bd77de5ca6cf5d8f3b605994c31
SHA512 7eeb5eae72e3831235557054747b117b025c08304ab7c0ecfe7f20cb7a29757bfbcd3f099333ef434808a143cefd36241ec4dd3b605b1b27e800aba119fb3614
MD5 SHA1 SHA512

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7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776
Size 404B
SHA256 bcae8b374bdf41ecbd6b6fb0dd76a82eca7634a8371d6e3d68e98cec94c66733
MD5 7e75cae38277c462b9baecb3a86d5e1d
SHA1 8729ab9f71fbbd1c62c0531a4cda73a3115740be
SHA512 c87e810f1abe8d2316c16f72d6718c8b146e3e6f217ebee67d64abc36857a0ba3441981f4bed00ee585fed9bd9a4bda875875767265bfe6950409958eaece2b8
MD5 SHA1 SHA512

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suggestions[1].en-US

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\5ACXXH1H\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/1820-6-0x00000000005A0000-0x00000000005AF000-memory.dmp

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memory/1820-5-0x0000000000400000-0x000000000042E000-memory.dmp

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memory/2508-1-0x0000000010000000-0x00000000100F6000-memory.dmp

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memory/2508-10-0x0000000075E60000-0x0000000075E61000-memory.dmp

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memory/5072-19-0x0000000075E40000-0x0000000075F30000-memory.dmp

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memory/5072-20-0x0000000075E40000-0x0000000075F30000-memory.dmp

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memory/5072-18-0x0000000000400000-0x000000000042E000-memory.dmp

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memory/5072-15-0x0000000075E40000-0x0000000075F30000-memory.dmp

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memory/5072-14-0x00000000005C0000-0x00000000005C1000-memory.dmp

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memory/5072-17-0x0000000075E40000-0x0000000075F30000-memory.dmp

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memory/5072-16-0x0000000075E40000-0x0000000075F30000-memory.dmp

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memory/5072-11-0x0000000000400000-0x000000000042E000-memory.dmp

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