darkcomet | acc6039013840f2f0618fcc9080d6026c8066ea72e0255c05b81714b5fc0a18b

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240709-en
resource tags

arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
submitted
11/07/2024, 12:25

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General

Target
391aa7380571866b722438631fc5c8d2_JaffaCakes118.exe
Size 317KB
Sample240711-plt66awdmk
SHA256 acc6039013840f2f0618fcc9080d6026c8066ea72e0255c05b81714b5fc0a18b
MD5 391aa7380571866b722438631fc5c8d2
SHA1 924599f7249cad7a5497084680adf9979fbbe66c
SHA512 5eba933fb7b242036e4b98a7f9671ebbbe4b8bd97067bd443d82c1d9016449b3f788c753f06520271adcbbc1040a66a11ae99e9b9a99faa55c3c723b76822424
SSDEEP 6144:Olb6SDOiIN4o2cOMayarS0IjX7n6wXmzbBFXS:O0Siiu2cOMayaZerXXmhFXS
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

darkcomet evasion persistence rat trojan upx

Malware Config

Signatures

Darkcomet
DarkComet is a remote access trojan (RAT) developed by Jean-Pierre Lesueur.
trojan rat darkcomet

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Users\\Admin\\AppData\\Roaming\\folder\\msdcsc.exe"	391aa7380571866b722438631fc5c8d2_JaffaCakes118.exe

Sets file to hidden 1 TTPs 2 IoCs

Modifies file attributes to stop it showing in Explorer etc.

evasion

Hidden Files and Directories

T1564.001

pid	Process
1844	attrib.exe
4716	attrib.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2990742725-2267136959-192470804-1000\Control Panel\International\Geo\Nation	391aa7380571866b722438631fc5c8d2_JaffaCakes118.exe

Executes dropped EXE 1 IoCs

pid	Process
4008	msdcsc.exe

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3364-0-0x0000000000400000-0x00000000004D9000-memory.dmp	upx
behavioral2/files/0x000800000002349f-13.dat	upx
behavioral2/memory/4008-70-0x0000000000400000-0x00000000004D9000-memory.dmp	upx
behavioral2/memory/3364-72-0x0000000000400000-0x00000000004D9000-memory.dmp	upx
behavioral2/memory/1084-74-0x0000000000400000-0x00000000004D9000-memory.dmp	upx
behavioral2/memory/4008-76-0x0000000000400000-0x00000000004D9000-memory.dmp	upx

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2990742725-2267136959-192470804-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\anitreg = "C:\\Users\\Admin\\AppData\\Roaming\\folder\\msdcsc.exe"	391aa7380571866b722438631fc5c8d2_JaffaCakes118.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4008 set thread context of 1084	4008	msdcsc.exe	93

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

System Information Discovery
T1082

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	391aa7380571866b722438631fc5c8d2_JaffaCakes118.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	3364	391aa7380571866b722438631fc5c8d2_JaffaCakes118.exe
Token: SeSecurityPrivilege	3364	391aa7380571866b722438631fc5c8d2_JaffaCakes118.exe
Token: SeTakeOwnershipPrivilege	3364	391aa7380571866b722438631fc5c8d2_JaffaCakes118.exe
Token: SeLoadDriverPrivilege	3364	391aa7380571866b722438631fc5c8d2_JaffaCakes118.exe
Token: SeSystemProfilePrivilege	3364	391aa7380571866b722438631fc5c8d2_JaffaCakes118.exe
Token: SeSystemtimePrivilege	3364	391aa7380571866b722438631fc5c8d2_JaffaCakes118.exe
Token: SeProfSingleProcessPrivilege	3364	391aa7380571866b722438631fc5c8d2_JaffaCakes118.exe
Token: SeIncBasePriorityPrivilege	3364	391aa7380571866b722438631fc5c8d2_JaffaCakes118.exe
Token: SeCreatePagefilePrivilege	3364	391aa7380571866b722438631fc5c8d2_JaffaCakes118.exe
Token: SeBackupPrivilege	3364	391aa7380571866b722438631fc5c8d2_JaffaCakes118.exe
Token: SeRestorePrivilege	3364	391aa7380571866b722438631fc5c8d2_JaffaCakes118.exe
Token: SeShutdownPrivilege	3364	391aa7380571866b722438631fc5c8d2_JaffaCakes118.exe
Token: SeDebugPrivilege	3364	391aa7380571866b722438631fc5c8d2_JaffaCakes118.exe
Token: SeSystemEnvironmentPrivilege	3364	391aa7380571866b722438631fc5c8d2_JaffaCakes118.exe
Token: SeChangeNotifyPrivilege	3364	391aa7380571866b722438631fc5c8d2_JaffaCakes118.exe
Token: SeRemoteShutdownPrivilege	3364	391aa7380571866b722438631fc5c8d2_JaffaCakes118.exe
Token: SeUndockPrivilege	3364	391aa7380571866b722438631fc5c8d2_JaffaCakes118.exe
Token: SeManageVolumePrivilege	3364	391aa7380571866b722438631fc5c8d2_JaffaCakes118.exe
Token: SeImpersonatePrivilege	3364	391aa7380571866b722438631fc5c8d2_JaffaCakes118.exe
Token: SeCreateGlobalPrivilege	3364	391aa7380571866b722438631fc5c8d2_JaffaCakes118.exe
Token: 33	3364	391aa7380571866b722438631fc5c8d2_JaffaCakes118.exe
Token: 34	3364	391aa7380571866b722438631fc5c8d2_JaffaCakes118.exe
Token: 35	3364	391aa7380571866b722438631fc5c8d2_JaffaCakes118.exe
Token: 36	3364	391aa7380571866b722438631fc5c8d2_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	4008	msdcsc.exe
Token: SeSecurityPrivilege	4008	msdcsc.exe
Token: SeTakeOwnershipPrivilege	4008	msdcsc.exe
Token: SeLoadDriverPrivilege	4008	msdcsc.exe
Token: SeSystemProfilePrivilege	4008	msdcsc.exe
Token: SeSystemtimePrivilege	4008	msdcsc.exe
Token: SeProfSingleProcessPrivilege	4008	msdcsc.exe
Token: SeIncBasePriorityPrivilege	4008	msdcsc.exe
Token: SeCreatePagefilePrivilege	4008	msdcsc.exe
Token: SeBackupPrivilege	4008	msdcsc.exe
Token: SeRestorePrivilege	4008	msdcsc.exe
Token: SeShutdownPrivilege	4008	msdcsc.exe
Token: SeDebugPrivilege	4008	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	4008	msdcsc.exe
Token: SeChangeNotifyPrivilege	4008	msdcsc.exe
Token: SeRemoteShutdownPrivilege	4008	msdcsc.exe
Token: SeUndockPrivilege	4008	msdcsc.exe
Token: SeManageVolumePrivilege	4008	msdcsc.exe
Token: SeImpersonatePrivilege	4008	msdcsc.exe
Token: SeCreateGlobalPrivilege	4008	msdcsc.exe
Token: 33	4008	msdcsc.exe
Token: 34	4008	msdcsc.exe
Token: 35	4008	msdcsc.exe
Token: 36	4008	msdcsc.exe
Token: SeIncreaseQuotaPrivilege	1084	iexplore.exe
Token: SeSecurityPrivilege	1084	iexplore.exe
Token: SeTakeOwnershipPrivilege	1084	iexplore.exe
Token: SeLoadDriverPrivilege	1084	iexplore.exe
Token: SeSystemProfilePrivilege	1084	iexplore.exe
Token: SeSystemtimePrivilege	1084	iexplore.exe
Token: SeProfSingleProcessPrivilege	1084	iexplore.exe
Token: SeIncBasePriorityPrivilege	1084	iexplore.exe
Token: SeCreatePagefilePrivilege	1084	iexplore.exe
Token: SeBackupPrivilege	1084	iexplore.exe
Token: SeRestorePrivilege	1084	iexplore.exe
Token: SeShutdownPrivilege	1084	iexplore.exe
Token: SeDebugPrivilege	1084	iexplore.exe
Token: SeSystemEnvironmentPrivilege	1084	iexplore.exe
Token: SeChangeNotifyPrivilege	1084	iexplore.exe
Token: SeRemoteShutdownPrivilege	1084	iexplore.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1084	iexplore.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 3364 wrote to memory of 3640	3364	391aa7380571866b722438631fc5c8d2_JaffaCakes118.exe	86
PID 3364 wrote to memory of 3640	3364	391aa7380571866b722438631fc5c8d2_JaffaCakes118.exe	86
PID 3364 wrote to memory of 3640	3364	391aa7380571866b722438631fc5c8d2_JaffaCakes118.exe	86
PID 3364 wrote to memory of 3336	3364	391aa7380571866b722438631fc5c8d2_JaffaCakes118.exe	88
PID 3364 wrote to memory of 3336	3364	391aa7380571866b722438631fc5c8d2_JaffaCakes118.exe	88
PID 3364 wrote to memory of 3336	3364	391aa7380571866b722438631fc5c8d2_JaffaCakes118.exe	88
PID 3640 wrote to memory of 1844	3640	cmd.exe	90
PID 3640 wrote to memory of 1844	3640	cmd.exe	90
PID 3640 wrote to memory of 1844	3640	cmd.exe	90
PID 3336 wrote to memory of 4716	3336	cmd.exe	91
PID 3336 wrote to memory of 4716	3336	cmd.exe	91
PID 3336 wrote to memory of 4716	3336	cmd.exe	91
PID 3364 wrote to memory of 4008	3364	391aa7380571866b722438631fc5c8d2_JaffaCakes118.exe	92
PID 3364 wrote to memory of 4008	3364	391aa7380571866b722438631fc5c8d2_JaffaCakes118.exe	92
PID 3364 wrote to memory of 4008	3364	391aa7380571866b722438631fc5c8d2_JaffaCakes118.exe	92
PID 4008 wrote to memory of 1084	4008	msdcsc.exe	93
PID 4008 wrote to memory of 1084	4008	msdcsc.exe	93
PID 4008 wrote to memory of 1084	4008	msdcsc.exe	93
PID 4008 wrote to memory of 1084	4008	msdcsc.exe	93
PID 4008 wrote to memory of 1084	4008	msdcsc.exe	93

Views/modifies file attributes 1 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
1844	attrib.exe
4716	attrib.exe

C:\Users\Admin\AppData\Local\Temp\391aa7380571866b722438631fc5c8d2_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\391aa7380571866b722438631fc5c8d2_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- Checks computer location settings
- Adds Run key to start application
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3364
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpcmd.bat" "
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3640
- - C:\Windows\SysWOW64\attrib.exe
    attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
    3⤵
    - Sets file to hidden
    - Views/modifies file attributes
    PID:1844
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpcmd.bat" "
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3336
- - C:\Windows\SysWOW64\attrib.exe
    attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
    3⤵
    - Sets file to hidden
    - Views/modifies file attributes
    PID:4716
- C:\Users\Admin\AppData\Roaming\folder\msdcsc.exe
  "C:\Users\Admin\AppData\Roaming\folder\msdcsc.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4008
- - C:\Program Files (x86)\Internet Explorer\iexplore.exe
    "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:1084

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Defense Evasion

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

tmpcmd.bat

Path C:\Users\Admin\AppData\Local\Temp\tmpcmd.bat
Size 50B
SHA256 adaf4a84b41e410b02e261cfd0fe7739d98647eab73c3badd32ac6e39f26351b
MD5 b774ae3fb1da087e1f83b4f7b2060e5a
SHA1 97eb9be49ac3af9c851c9e1e84e32bfd53e325a8
SHA512 f75d0f95f7306d26a12b414bfe37b97fbd37546cb3c6e403def7077329ddffb4b45d5c5f0ba0e7bb6d72851d2d691b0a85267beead42f7cbf2e8c3d45a3b4701
MD5 SHA1 SHA512

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msdcsc.exe

Path C:\Users\Admin\AppData\Roaming\folder\msdcsc.exe
Size 317KB
SHA256 acc6039013840f2f0618fcc9080d6026c8066ea72e0255c05b81714b5fc0a18b
MD5 391aa7380571866b722438631fc5c8d2
SHA1 924599f7249cad7a5497084680adf9979fbbe66c
SHA512 5eba933fb7b242036e4b98a7f9671ebbbe4b8bd97067bd443d82c1d9016449b3f788c753f06520271adcbbc1040a66a11ae99e9b9a99faa55c3c723b76822424
SSDEEP 6144:Olb6SDOiIN4o2cOMayarS0IjX7n6wXmzbBFXS:O0Siiu2cOMayaZerXXmhFXS
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/1084-74-0x0000000000400000-0x00000000004D9000-memory.dmp

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memory/3364-0-0x0000000000400000-0x00000000004D9000-memory.dmp

Download

memory/3364-1-0x0000000000AF0000-0x0000000000AF1000-memory.dmp

Download

memory/3364-72-0x0000000000400000-0x00000000004D9000-memory.dmp

Download

memory/4008-70-0x0000000000400000-0x00000000004D9000-memory.dmp

Download

memory/4008-73-0x0000000000800000-0x0000000000801000-memory.dmp

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memory/4008-76-0x0000000000400000-0x00000000004D9000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads