ramnit | 40690c8c86bcc43be52dc1360cbc444e65194bc64224f49c488a8958c2d24577

Analysis

max time kernel
142s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
20/12/2023, 00:44

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General

Target

40690c8c86bcc43be52dc1360cbc444e65194bc64224f49c488a8958c2d24577.dll
Size

2.3MB
MD5

37ad110f7a516a07f3596051964a0626
SHA1

587dd8c6dd5ca3c41f06566abfdbb011adcd6242
SHA256

40690c8c86bcc43be52dc1360cbc444e65194bc64224f49c488a8958c2d24577
SHA512

50abac665ef4e42a2ff6687649e0a04fd80f0e79b114b1c921158874732598882e9cf5e225d9816dd7202f0a1f952272842cadf9883712b427ce862e5ff806b9
SSDEEP

49152:UEuAHYRzu54bzfRfBqJKSymLD6U/BorldPs1vuA33qM+Y:HuA4RAYRfBqwSymLD6U/65dPs1v133q

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
1896	rundll32Srv.exe
404	DesktopLayer.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x00050000000006e9-3.dat	upx
behavioral2/memory/1896-4-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral2/memory/1896-7-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral2/memory/404-15-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral2/memory/404-18-0x0000000000400000-0x000000000042E000-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 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\px81A3.tmp	rundll32Srv.exe

Modifies Internet Explorer settings 1 TTPs 30 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Set value (data)	\REGISTRY\USER\S-1-5-21-1815711207-1844170477-3539718864-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1815711207-1844170477-3539718864-1000\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-1-5-21-1815711207-1844170477-3539718864-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31077085"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1815711207-1844170477-3539718864-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31077085"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1815711207-1844170477-3539718864-1000\Software\Microsoft\Internet Explorer\VersionManager	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-1815711207-1844170477-3539718864-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1815711207-1844170477-3539718864-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1815711207-1844170477-3539718864-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1815711207-1844170477-3539718864-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1815711207-1844170477-3539718864-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1815711207-1844170477-3539718864-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-1815711207-1844170477-3539718864-1000\Software\Microsoft\Internet Explorer\VersionManager	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1815711207-1844170477-3539718864-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "3336669856"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1815711207-1844170477-3539718864-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1815711207-1844170477-3539718864-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "409798051"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1815711207-1844170477-3539718864-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1815711207-1844170477-3539718864-1000\Software\Microsoft\Internet Explorer\GPU	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-1815711207-1844170477-3539718864-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "3336826506"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1815711207-1844170477-3539718864-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1815711207-1844170477-3539718864-1000\Software\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1815711207-1844170477-3539718864-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{F26288AB-9ED0-11EE-9A4E-72AC86130FB1} = "0"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1815711207-1844170477-3539718864-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1815711207-1844170477-3539718864-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1815711207-1844170477-3539718864-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1815711207-1844170477-3539718864-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1815711207-1844170477-3539718864-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1815711207-1844170477-3539718864-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1815711207-1844170477-3539718864-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1815711207-1844170477-3539718864-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31077085"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-1815711207-1844170477-3539718864-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "3350889660"	IEXPLORE.EXE

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
404	DesktopLayer.exe
404	DesktopLayer.exe
404	DesktopLayer.exe
404	DesktopLayer.exe
404	DesktopLayer.exe
404	DesktopLayer.exe
404	DesktopLayer.exe
404	DesktopLayer.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
3560	iexplore.exe

Suspicious use of SetWindowsHookEx 10 IoCs

pid	Process
2196	rundll32.exe
2196	rundll32.exe
2196	rundll32.exe
2196	rundll32.exe
3560	iexplore.exe
3560	iexplore.exe
1928	IEXPLORE.EXE
1928	IEXPLORE.EXE
1928	IEXPLORE.EXE
1928	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 1688 wrote to memory of 2196	1688	rundll32.exe	85
PID 1688 wrote to memory of 2196	1688	rundll32.exe	85
PID 1688 wrote to memory of 2196	1688	rundll32.exe	85
PID 2196 wrote to memory of 1896	2196	rundll32.exe	88
PID 2196 wrote to memory of 1896	2196	rundll32.exe	88
PID 2196 wrote to memory of 1896	2196	rundll32.exe	88
PID 1896 wrote to memory of 404	1896	rundll32Srv.exe	89
PID 1896 wrote to memory of 404	1896	rundll32Srv.exe	89
PID 1896 wrote to memory of 404	1896	rundll32Srv.exe	89
PID 404 wrote to memory of 3560	404	DesktopLayer.exe	90
PID 404 wrote to memory of 3560	404	DesktopLayer.exe	90
PID 3560 wrote to memory of 1928	3560	iexplore.exe	91
PID 3560 wrote to memory of 1928	3560	iexplore.exe	91
PID 3560 wrote to memory of 1928	3560	iexplore.exe	91

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\40690c8c86bcc43be52dc1360cbc444e65194bc64224f49c488a8958c2d24577.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1688
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\40690c8c86bcc43be52dc1360cbc444e65194bc64224f49c488a8958c2d24577.dll,#1
  2⤵
  - Drops file in System32 directory
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2196
- - 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:1896
  - - 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:404
    - - 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:3560
      - C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:3560 CREDAT:17410 /prefetch:2
        6⤵
        Modifies Internet Explorer settings
        Suspicious use of SetWindowsHookEx
        
        PID:1928

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

C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\6AXLYU2E\suggestions[1].en-US

Filesize
17KB

MD5
5a34cb996293fde2cb7a4ac89587393a

SHA1
3c96c993500690d1a77873cd62bc639b3a10653f

SHA256
c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad

SHA512
e1b7d0107733f81937415104e70f68b1be6fd0ca65dccf4ff72637943d44278d3a77f704aedff59d2dbc0d56a609b2590c8ec0dd6bc48ab30f1dad0c07a0a3ee

Download Submit
C:\Windows\SysWOW64\rundll32Srv.exe

Filesize
55KB

MD5
ff5e1f27193ce51eec318714ef038bef

SHA1
b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

SHA256
fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

SHA512
c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

Download Submit
memory/404-17-0x0000000077CB2000-0x0000000077CB3000-memory.dmp

Filesize
4KB

Download
memory/404-13-0x0000000000480000-0x000000000048F000-memory.dmp

Filesize
60KB

Download
memory/404-14-0x0000000000490000-0x0000000000491000-memory.dmp

Filesize
4KB

Download
memory/404-15-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/404-16-0x0000000077CB2000-0x0000000077CB3000-memory.dmp

Filesize
4KB

Download
memory/404-18-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/1896-7-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/1896-10-0x0000000000480000-0x000000000048F000-memory.dmp

Filesize
60KB

Download
memory/1896-4-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/2196-1-0x00000000754D0000-0x000000007571F000-memory.dmp

Filesize
2.3MB

Download
memory/2196-19-0x00000000754D0000-0x000000007571F000-memory.dmp

Filesize
2.3MB

Download