ramnit | ace765dd9e693c2c8bb976e07a5680b3a11cc8078ac8b1180924ec57461182df

General

Target

ace765dd9e693c2c8bb976e07a5680b3a11cc8078ac8b1180924ec57461182df.exe
Size

705KB
MD5

1f7fea9c266f6b98c40c5dc9e45c4190
SHA1

a577513f51bdd85e086e054e4b4bc7ff15fa2b98
SHA256

ace765dd9e693c2c8bb976e07a5680b3a11cc8078ac8b1180924ec57461182df
SHA512

632b69d7db94296325270b862e12b95296f784082ae7e466506f747a6e0dc8d78102076f3bc002e778ff7cd4426bceb6d74c5ea2fa82ed38c7dd407b59a708ee
SSDEEP

12288:wiAPAH1AKGtq5JTFITEgLBXxlmYNcDyfQ8gi4gHkNwpNUfM0BxeINkh:iAAdq1ITEglkyxNUfM0BJW

Score

10^/10

ramnit banker bootkit persistence 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
4776	ace765dd9e693c2c8bb976e07a5680b3a11cc8078ac8b1180924ec57461182dfSrv.exe
5096	DesktopLayer.exe

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000b000000022e67-133.dat	upx
behavioral2/files/0x000b000000022e67-134.dat	upx
behavioral2/memory/5096-141-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral2/memory/4776-139-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral2/files/0x0008000000022e6a-137.dat	upx
behavioral2/files/0x0008000000022e6a-136.dat	upx

Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

Bootkits write to the MBR to gain persistence at a level below the operating system.

bootkit persistence

Bootkit

T1067

description	ioc	Process
File opened for modification	\??\PhysicalDrive0	ace765dd9e693c2c8bb976e07a5680b3a11cc8078ac8b1180924ec57461182df.exe

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Microsoft\DesktopLayer.exe	ace765dd9e693c2c8bb976e07a5680b3a11cc8078ac8b1180924ec57461182dfSrv.exe
File opened for modification	C:\Program Files (x86)\Microsoft\px8C47.tmp	ace765dd9e693c2c8bb976e07a5680b3a11cc8078ac8b1180924ec57461182dfSrv.exe
File created	C:\Program Files (x86)\Microsoft\DesktopLayer.exe	ace765dd9e693c2c8bb976e07a5680b3a11cc8078ac8b1180924ec57461182dfSrv.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Modifies Internet Explorer settings 1 TTPs 25 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "30995046"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "30995046"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "2113906986"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "374562416"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Internet Explorer\VersionManager	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "2113906986"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{975EA3FD-5E59-11ED-89AC-D2371B4A40BE} = "0"	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000_Classes\Local Settings	ace765dd9e693c2c8bb976e07a5680b3a11cc8078ac8b1180924ec57461182df.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
5096	DesktopLayer.exe
5096	DesktopLayer.exe
5096	DesktopLayer.exe
5096	DesktopLayer.exe
5096	DesktopLayer.exe
5096	DesktopLayer.exe
5096	DesktopLayer.exe
5096	DesktopLayer.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
4288	iexplore.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
4288	iexplore.exe
4288	iexplore.exe
4176	IEXPLORE.EXE
4176	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 4832 wrote to memory of 4776	4832	ace765dd9e693c2c8bb976e07a5680b3a11cc8078ac8b1180924ec57461182df.exe	80
PID 4832 wrote to memory of 4776	4832	ace765dd9e693c2c8bb976e07a5680b3a11cc8078ac8b1180924ec57461182df.exe	80
PID 4832 wrote to memory of 4776	4832	ace765dd9e693c2c8bb976e07a5680b3a11cc8078ac8b1180924ec57461182df.exe	80
PID 4776 wrote to memory of 5096	4776	ace765dd9e693c2c8bb976e07a5680b3a11cc8078ac8b1180924ec57461182dfSrv.exe	81
PID 4776 wrote to memory of 5096	4776	ace765dd9e693c2c8bb976e07a5680b3a11cc8078ac8b1180924ec57461182dfSrv.exe	81
PID 4776 wrote to memory of 5096	4776	ace765dd9e693c2c8bb976e07a5680b3a11cc8078ac8b1180924ec57461182dfSrv.exe	81
PID 5096 wrote to memory of 4288	5096	DesktopLayer.exe	82
PID 5096 wrote to memory of 4288	5096	DesktopLayer.exe	82
PID 4288 wrote to memory of 4176	4288	iexplore.exe	83
PID 4288 wrote to memory of 4176	4288	iexplore.exe	83
PID 4288 wrote to memory of 4176	4288	iexplore.exe	83

C:\Users\Admin\AppData\Local\Temp\ace765dd9e693c2c8bb976e07a5680b3a11cc8078ac8b1180924ec57461182df.exe
"C:\Users\Admin\AppData\Local\Temp\ace765dd9e693c2c8bb976e07a5680b3a11cc8078ac8b1180924ec57461182df.exe"
1⤵
- Writes to the Master Boot Record (MBR)
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:4832
- C:\Users\Admin\AppData\Local\Temp\ace765dd9e693c2c8bb976e07a5680b3a11cc8078ac8b1180924ec57461182dfSrv.exe
  C:\Users\Admin\AppData\Local\Temp\ace765dd9e693c2c8bb976e07a5680b3a11cc8078ac8b1180924ec57461182dfSrv.exe
  2⤵
  - Executes dropped EXE
  - Drops file in Program Files directory
  - Suspicious use of WriteProcessMemory
  PID:4776
- - C:\Program Files (x86)\Microsoft\DesktopLayer.exe
    "C:\Program Files (x86)\Microsoft\DesktopLayer.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:5096
  - - C:\Program Files\Internet Explorer\iexplore.exe
      "C:\Program Files\Internet Explorer\iexplore.exe"
      4⤵
      Modifies Internet Explorer settings
      Suspicious use of FindShellTrayWindow
      Suspicious use of SetWindowsHookEx
      Suspicious use of WriteProcessMemory
      PID:4288
    - - C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:4288 CREDAT:17410 /prefetch:2
        5⤵
        Modifies Internet Explorer settings
        Suspicious use of SetWindowsHookEx
        
        PID:4176

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
1⤵
PID:208

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Bootkit

1

T1067

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Program Files (x86)\Microsoft\DesktopLayer.exe

Filesize
55KB

MD5
ff5e1f27193ce51eec318714ef038bef

SHA1
b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

SHA256
fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

SHA512
c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

Download Submit
C:\Program Files (x86)\Microsoft\DesktopLayer.exe

Filesize
55KB

MD5
ff5e1f27193ce51eec318714ef038bef

SHA1
b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

SHA256
fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

SHA512
c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

Download Submit
C:\Users\Admin\AppData\Local\Temp\ace765dd9e693c2c8bb976e07a5680b3a11cc8078ac8b1180924ec57461182dfSrv.exe

Filesize
55KB

MD5
ff5e1f27193ce51eec318714ef038bef

SHA1
b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

SHA256
fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

SHA512
c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

Download Submit
C:\Users\Admin\AppData\Local\Temp\ace765dd9e693c2c8bb976e07a5680b3a11cc8078ac8b1180924ec57461182dfSrv.exe

Filesize
55KB

MD5
ff5e1f27193ce51eec318714ef038bef

SHA1
b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

SHA256
fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

SHA512
c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

Download Submit
memory/4776-140-0x0000000000540000-0x000000000054F000-memory.dmp

Filesize
60KB

Download
memory/4776-144-0x0000000000540000-0x000000000054F000-memory.dmp

Filesize
60KB

Download
memory/4776-139-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/4832-138-0x0000000000FC0000-0x0000000001076000-memory.dmp

Filesize
728KB

Download
memory/4832-143-0x0000000000FC0000-0x0000000001076000-memory.dmp

Filesize
728KB

Download
memory/4832-146-0x0000000000FC0000-0x0000000001076000-memory.dmp

Filesize
728KB

Download
memory/5096-141-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/5096-142-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/5096-145-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download

Analysis

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