darkcomet | 0299f0c9537c0a9c3415221f2939b9d3f964090d9f02e80c1bb3916cfeb346c3

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
13-12-2024 08:01

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General

Target

eaa3e99c14f2a6c77f1991ba4132b1f1_JaffaCakes118.exe
Size

374KB
MD5

eaa3e99c14f2a6c77f1991ba4132b1f1
SHA1

1bb5481c627e599609c1b34e97ba68355de2ba0e
SHA256

0299f0c9537c0a9c3415221f2939b9d3f964090d9f02e80c1bb3916cfeb346c3
SHA512

b2cf4c16d8d11c3760c0b9c09bf8cc14c475011e91dbac469fb659591182a1f584020e27eb690d215cea6ecfce17774644c819f39d4083564eda2a492dd7b8a4
SSDEEP

6144:kzNxMMVANb6ES5Kg3PIuYkk94yNcO43SiIDxfB7GTndEgVpRlrsI4:2xkOHPVg4ydeRI1V8R5sI4

Score

10^/10

darkcomet discovery evasion persistence rat trojan upx

Malware Config

Signatures

Darkcomet
DarkComet is a remote access trojan (RAT) developed by Jean-Pierre Lesueur.
trojan rat darkcomet
Darkcomet family
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\\Desktop\\MSDCSC\\msdcsc.exe"	566.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
1328	attrib.exe
1264	attrib.exe

Checks computer location settings 2 TTPs 2 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-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	eaa3e99c14f2a6c77f1991ba4132b1f1_JaffaCakes118.exe
Key value queried	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	566.EXE

Executes dropped EXE 2 IoCs

pid	Process
2872	566.EXE
5012	msdcsc.exe

Adds Run key to start application 2 TTPs 3 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Desktop\\MSDCSC\\msdcsc.exe"	566.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Desktop\\MSDCSC\\msdcsc.exe"	msdcsc.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Desktop\\MSDCSC\\msdcsc.exe"	iexplore.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 5012 set thread context of 2776	5012	msdcsc.exe	94

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral2/memory/628-0-0x0000000000B30000-0x0000000000C01000-memory.dmp	upx
behavioral2/memory/628-13-0x0000000000B30000-0x0000000000C01000-memory.dmp	upx

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 8 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	msdcsc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	iexplore.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	eaa3e99c14f2a6c77f1991ba4132b1f1_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	566.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	attrib.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	attrib.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	566.EXE

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2776	iexplore.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	2872	566.EXE
Token: SeSecurityPrivilege	2872	566.EXE
Token: SeTakeOwnershipPrivilege	2872	566.EXE
Token: SeLoadDriverPrivilege	2872	566.EXE
Token: SeSystemProfilePrivilege	2872	566.EXE
Token: SeSystemtimePrivilege	2872	566.EXE
Token: SeProfSingleProcessPrivilege	2872	566.EXE
Token: SeIncBasePriorityPrivilege	2872	566.EXE
Token: SeCreatePagefilePrivilege	2872	566.EXE
Token: SeBackupPrivilege	2872	566.EXE
Token: SeRestorePrivilege	2872	566.EXE
Token: SeShutdownPrivilege	2872	566.EXE
Token: SeDebugPrivilege	2872	566.EXE
Token: SeSystemEnvironmentPrivilege	2872	566.EXE
Token: SeChangeNotifyPrivilege	2872	566.EXE
Token: SeRemoteShutdownPrivilege	2872	566.EXE
Token: SeUndockPrivilege	2872	566.EXE
Token: SeManageVolumePrivilege	2872	566.EXE
Token: SeImpersonatePrivilege	2872	566.EXE
Token: SeCreateGlobalPrivilege	2872	566.EXE
Token: 33	2872	566.EXE
Token: 34	2872	566.EXE
Token: 35	2872	566.EXE
Token: 36	2872	566.EXE
Token: SeIncreaseQuotaPrivilege	5012	msdcsc.exe
Token: SeSecurityPrivilege	5012	msdcsc.exe
Token: SeTakeOwnershipPrivilege	5012	msdcsc.exe
Token: SeLoadDriverPrivilege	5012	msdcsc.exe
Token: SeSystemProfilePrivilege	5012	msdcsc.exe
Token: SeSystemtimePrivilege	5012	msdcsc.exe
Token: SeProfSingleProcessPrivilege	5012	msdcsc.exe
Token: SeIncBasePriorityPrivilege	5012	msdcsc.exe
Token: SeCreatePagefilePrivilege	5012	msdcsc.exe
Token: SeBackupPrivilege	5012	msdcsc.exe
Token: SeRestorePrivilege	5012	msdcsc.exe
Token: SeShutdownPrivilege	5012	msdcsc.exe
Token: SeDebugPrivilege	5012	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	5012	msdcsc.exe
Token: SeChangeNotifyPrivilege	5012	msdcsc.exe
Token: SeRemoteShutdownPrivilege	5012	msdcsc.exe
Token: SeUndockPrivilege	5012	msdcsc.exe
Token: SeManageVolumePrivilege	5012	msdcsc.exe
Token: SeImpersonatePrivilege	5012	msdcsc.exe
Token: SeCreateGlobalPrivilege	5012	msdcsc.exe
Token: 33	5012	msdcsc.exe
Token: 34	5012	msdcsc.exe
Token: 35	5012	msdcsc.exe
Token: 36	5012	msdcsc.exe
Token: SeIncreaseQuotaPrivilege	2776	iexplore.exe
Token: SeSecurityPrivilege	2776	iexplore.exe
Token: SeTakeOwnershipPrivilege	2776	iexplore.exe
Token: SeLoadDriverPrivilege	2776	iexplore.exe
Token: SeSystemProfilePrivilege	2776	iexplore.exe
Token: SeSystemtimePrivilege	2776	iexplore.exe
Token: SeProfSingleProcessPrivilege	2776	iexplore.exe
Token: SeIncBasePriorityPrivilege	2776	iexplore.exe
Token: SeCreatePagefilePrivilege	2776	iexplore.exe
Token: SeBackupPrivilege	2776	iexplore.exe
Token: SeRestorePrivilege	2776	iexplore.exe
Token: SeShutdownPrivilege	2776	iexplore.exe
Token: SeDebugPrivilege	2776	iexplore.exe
Token: SeSystemEnvironmentPrivilege	2776	iexplore.exe
Token: SeChangeNotifyPrivilege	2776	iexplore.exe
Token: SeRemoteShutdownPrivilege	2776	iexplore.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2776	iexplore.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 628 wrote to memory of 2872	628	eaa3e99c14f2a6c77f1991ba4132b1f1_JaffaCakes118.exe	84
PID 628 wrote to memory of 2872	628	eaa3e99c14f2a6c77f1991ba4132b1f1_JaffaCakes118.exe	84
PID 628 wrote to memory of 2872	628	eaa3e99c14f2a6c77f1991ba4132b1f1_JaffaCakes118.exe	84
PID 2872 wrote to memory of 2112	2872	566.EXE	87
PID 2872 wrote to memory of 2112	2872	566.EXE	87
PID 2872 wrote to memory of 2112	2872	566.EXE	87
PID 2872 wrote to memory of 4520	2872	566.EXE	89
PID 2872 wrote to memory of 4520	2872	566.EXE	89
PID 2872 wrote to memory of 4520	2872	566.EXE	89
PID 2112 wrote to memory of 1264	2112	cmd.exe	91
PID 2112 wrote to memory of 1264	2112	cmd.exe	91
PID 2112 wrote to memory of 1264	2112	cmd.exe	91
PID 4520 wrote to memory of 1328	4520	cmd.exe	92
PID 4520 wrote to memory of 1328	4520	cmd.exe	92
PID 4520 wrote to memory of 1328	4520	cmd.exe	92
PID 2872 wrote to memory of 5012	2872	566.EXE	93
PID 2872 wrote to memory of 5012	2872	566.EXE	93
PID 2872 wrote to memory of 5012	2872	566.EXE	93
PID 5012 wrote to memory of 2776	5012	msdcsc.exe	94
PID 5012 wrote to memory of 2776	5012	msdcsc.exe	94
PID 5012 wrote to memory of 2776	5012	msdcsc.exe	94
PID 5012 wrote to memory of 2776	5012	msdcsc.exe	94
PID 5012 wrote to memory of 2776	5012	msdcsc.exe	94

Views/modifies file attributes 1 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
1328	attrib.exe
1264	attrib.exe

C:\Users\Admin\AppData\Local\Temp\eaa3e99c14f2a6c77f1991ba4132b1f1_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\eaa3e99c14f2a6c77f1991ba4132b1f1_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:628
- C:\Users\Admin\AppData\Local\Temp\566.EXE
  "C:\Users\Admin\AppData\Local\Temp\566.EXE"
  2⤵
  - Modifies WinLogon for persistence
  - Checks computer location settings
  - Executes dropped EXE
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2872
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpcmd.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2112
  - - C:\Windows\SysWOW64\attrib.exe
      attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
      4⤵
      Sets file to hidden
      System Location Discovery: System Language Discovery
      Views/modifies file attributes
      PID:1264
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpcmd.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4520
  - - C:\Windows\SysWOW64\attrib.exe
      attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
      4⤵
      Sets file to hidden
      System Location Discovery: System Language Discovery
      Views/modifies file attributes
      PID:1328
- - C:\Users\Admin\Desktop\MSDCSC\msdcsc.exe
    "C:\Users\Admin\Desktop\MSDCSC\msdcsc.exe"
    3⤵
    - Executes dropped EXE
    - Adds Run key to start application
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:5012
  - - C:\Program Files (x86)\Internet Explorer\iexplore.exe
      "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
      4⤵
      Adds Run key to start application
      System Location Discovery: System Language Discovery
      Suspicious behavior: GetForegroundWindowSpam
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of SetWindowsHookEx
      PID:2776

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

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\566.EXE

Filesize
755KB

MD5
b64c98cc781514eccebb0b1b5c930cbb

SHA1
dc1099f9d3071e510ffae2b5ca7878bc42bb38e4

SHA256
ef785a958c1af0a5c6ad3fe62a2d676fe8b4a723b8d4bb3d1778a0c2cdac7f57

SHA512
2deea429a91b44131553256bc3e88a0e21b3927ee67c038c333da2cd0220143fe6bcb104d6c83f3d7eb9271e298bd74bbbe8a2a3e6c1c227e37ec15ee788110a

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpcmd.bat

Filesize
50B

MD5
b774ae3fb1da087e1f83b4f7b2060e5a

SHA1
97eb9be49ac3af9c851c9e1e84e32bfd53e325a8

SHA256
adaf4a84b41e410b02e261cfd0fe7739d98647eab73c3badd32ac6e39f26351b

SHA512
f75d0f95f7306d26a12b414bfe37b97fbd37546cb3c6e403def7077329ddffb4b45d5c5f0ba0e7bb6d72851d2d691b0a85267beead42f7cbf2e8c3d45a3b4701

Download Submit
memory/628-0-0x0000000000B30000-0x0000000000C01000-memory.dmp

Filesize
836KB

Download
memory/628-13-0x0000000000B30000-0x0000000000C01000-memory.dmp

Filesize
836KB

Download
memory/2776-85-0x0000000000400000-0x00000000004CB000-memory.dmp

Filesize
812KB

Download
memory/2872-14-0x0000000002260000-0x0000000002261000-memory.dmp

Filesize
4KB

Download
memory/2872-84-0x0000000000400000-0x00000000004CB000-memory.dmp

Filesize
812KB

Download
memory/5012-86-0x0000000000400000-0x00000000004CB000-memory.dmp

Filesize
812KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads