ramnit | b1d0780d8d9010288bb2449efcb1b4399347c553a0b24c6dfff6d68328ef0844

Analysis

max time kernel
148s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
17/04/2024, 11:52

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General

Target
b1d0780d8d9010288bb2449efcb1b4399347c553a0b24c6dfff6d68328ef0844.dll
Size 532KB
Sample240417-n1ppjsfd41
SHA256 b1d0780d8d9010288bb2449efcb1b4399347c553a0b24c6dfff6d68328ef0844
MD5 713253d8d93c15e72240120280c7c66f
SHA1 39a19698b378784978c4ea7ef286f18081d4a469
SHA512 01638251af93858d863668effb9d6927bf9ae8ba1c4dd620ce5645fdb91c4fb393cd3209471101f8c7af0eeee155f6a9518797860c2c4a0b5ddf568cfed0cd1f
SSDEEP 6144:El27E9UpTw/pZTCsrYdZW+Y7PSNC3zpA9h4Pn2FdFKF5DUlMAAOzliqlgAxVuznn:EkCagvz7GazpAfcn2UF5DUTdeAzuRp
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
1808	rundll32Srv.exe
4052	DesktopLayer.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x00080000000233f9-3.dat	upx
behavioral2/memory/1808-4-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral2/memory/1808-9-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral2/memory/4052-15-0x0000000000400000-0x000000000042E000-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 created	C:\Program Files (x86)\Microsoft\DesktopLayer.exe	rundll32Srv.exe
File opened for modification	C:\Program Files (x86)\Microsoft\DesktopLayer.exe	rundll32Srv.exe
File opened for modification	C:\Program Files (x86)\Microsoft\px8CA0.tmp	rundll32Srv.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3720	3752	WerFault.exe	84

Modifies Internet Explorer settings 1 TTPs 30 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-4092317236-2027488869-1227795436-1000\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-1-5-21-4092317236-2027488869-1227795436-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4092317236-2027488869-1227795436-1000\Software\Microsoft\Internet Explorer\VersionManager	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-4092317236-2027488869-1227795436-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31101117"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-4092317236-2027488869-1227795436-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4092317236-2027488869-1227795436-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-4092317236-2027488869-1227795436-1000\Software\Microsoft\Internet Explorer\GPU	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-4092317236-2027488869-1227795436-1000\Software\Microsoft\Internet Explorer\VersionManager	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4092317236-2027488869-1227795436-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "3195063518"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4092317236-2027488869-1227795436-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4092317236-2027488869-1227795436-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4092317236-2027488869-1227795436-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31101117"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4092317236-2027488869-1227795436-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "3206002080"	IEXPLORE.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-4092317236-2027488869-1227795436-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4092317236-2027488869-1227795436-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4092317236-2027488869-1227795436-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4092317236-2027488869-1227795436-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4092317236-2027488869-1227795436-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{EA04E3E2-FCB0-11EE-8F38-464788B6DC77} = "0"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4092317236-2027488869-1227795436-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4092317236-2027488869-1227795436-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4092317236-2027488869-1227795436-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4092317236-2027488869-1227795436-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31101117"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4092317236-2027488869-1227795436-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4092317236-2027488869-1227795436-1000\Software\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4092317236-2027488869-1227795436-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "420119702"	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-4092317236-2027488869-1227795436-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4092317236-2027488869-1227795436-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "3195063518"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4092317236-2027488869-1227795436-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4092317236-2027488869-1227795436-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4092317236-2027488869-1227795436-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
4052	DesktopLayer.exe
4052	DesktopLayer.exe
4052	DesktopLayer.exe
4052	DesktopLayer.exe
4052	DesktopLayer.exe
4052	DesktopLayer.exe
4052	DesktopLayer.exe
4052	DesktopLayer.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2188	iexplore.exe

Suspicious use of SetWindowsHookEx 6 IoCs

pid	Process
2188	iexplore.exe
2188	iexplore.exe
4532	IEXPLORE.EXE
4532	IEXPLORE.EXE
4532	IEXPLORE.EXE
4532	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 812 wrote to memory of 3752	812	rundll32.exe	84
PID 812 wrote to memory of 3752	812	rundll32.exe	84
PID 812 wrote to memory of 3752	812	rundll32.exe	84
PID 3752 wrote to memory of 1808	3752	rundll32.exe	87
PID 3752 wrote to memory of 1808	3752	rundll32.exe	87
PID 3752 wrote to memory of 1808	3752	rundll32.exe	87
PID 1808 wrote to memory of 4052	1808	rundll32Srv.exe	88
PID 1808 wrote to memory of 4052	1808	rundll32Srv.exe	88
PID 1808 wrote to memory of 4052	1808	rundll32Srv.exe	88
PID 4052 wrote to memory of 2188	4052	DesktopLayer.exe	90
PID 4052 wrote to memory of 2188	4052	DesktopLayer.exe	90
PID 2188 wrote to memory of 4532	2188	iexplore.exe	93
PID 2188 wrote to memory of 4532	2188	iexplore.exe	93
PID 2188 wrote to memory of 4532	2188	iexplore.exe	93

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\b1d0780d8d9010288bb2449efcb1b4399347c553a0b24c6dfff6d68328ef0844.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:812
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\b1d0780d8d9010288bb2449efcb1b4399347c553a0b24c6dfff6d68328ef0844.dll,#1
  2⤵
  - Drops file in System32 directory
  - Suspicious use of WriteProcessMemory
  PID:3752
- - 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:1808
  - - 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:4052
    - - 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:2188
      - C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:2188 CREDAT:17410 /prefetch:2
        6⤵
        Modifies Internet Explorer settings
        Suspicious use of SetWindowsHookEx
        
        PID:4532
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 3752 -s 632
    3⤵
    - Program crash
    PID:3720

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3752 -ip 3752
1⤵
PID:4312

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

suggestions[1].en-US

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\RZ2UM7WN\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 d1a57e19ddb9892e423248cc8ff0c4b1211d22e1ccad6111fcac218290f246f0
MD5 42bacbdf56184c2fa5fe6770857e2c2d
SHA1 521a63ee9ce2f615eda692c382b16fc1b1d57cac
SHA512 0ab916dd15278e51bccfd2ccedd80d942b0bddb9544cec3f73120780d4f7234ff7456530e1465caf3846616821d1b385b6ae58a5dff9ffe4d622902c24fd4b71
SSDEEP 1536:C+hzRsibKplyXTq8OGRnsPFG+RODTb7MXL5uXZnzE:5ROzoTq0+RO7IwnY
MD5 SHA1 SHA512 SSDEEP

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memory/1808-4-0x0000000000400000-0x000000000042E000-memory.dmp

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memory/1808-6-0x0000000000590000-0x000000000059F000-memory.dmp

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memory/1808-9-0x0000000000400000-0x000000000042E000-memory.dmp

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memory/3752-1-0x0000000074E30000-0x0000000074EBC000-memory.dmp

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memory/3752-18-0x0000000074E30000-0x0000000074EBC000-memory.dmp

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memory/4052-13-0x00000000004D0000-0x00000000004D1000-memory.dmp

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memory/4052-15-0x0000000000400000-0x000000000042E000-memory.dmp

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memory/4052-12-0x0000000000480000-0x000000000048F000-memory.dmp

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memory/4052-16-0x0000000077452000-0x0000000077453000-memory.dmp

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