darkcomet | 01ee90a7d468ae0521c715d120fc6bd67d365171b67eda16a22b1c53671ceb78

Analysis

max time kernel
141s
max time network
119s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
16-04-2024 19:41

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General

Target

f4313881fa968ddafeeb336e2749e324_JaffaCakes118.exe
Size

412KB
MD5

f4313881fa968ddafeeb336e2749e324
SHA1

c26953eb12c031b71d70f5c97a9fbedd32150efb
SHA256

01ee90a7d468ae0521c715d120fc6bd67d365171b67eda16a22b1c53671ceb78
SHA512

da40a617f93a0a835d8bbd8a26a5717327701fcb734f17e7992bb4c5cc9d7d864938641f7b128317e52f4136e226a6c960ba2498b949c2d86886944b9e4f3aa3
SSDEEP

12288:M5/2KDfYG79b81d39JCGrZU6OFhMk/eR6:U2KDf99I1d3bCGre6OFf/eE

Score

10^/10

darkcomet 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

Processes:

f4313881fa968ddafeeb336e2749e324_JaffaCakes118.exe

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Windupdt\\winupdate.exe"	f4313881fa968ddafeeb336e2749e324_JaffaCakes118.exe

Checks BIOS information in registry 2 TTPs 1 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

f4313881fa968ddafeeb336e2749e324_JaffaCakes118.exe

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	f4313881fa968ddafeeb336e2749e324_JaffaCakes118.exe

UPX packed file 4 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/1148-2-0x0000000013140000-0x000000001322D000-memory.dmp	upx
behavioral2/memory/1148-4-0x0000000013140000-0x000000001322D000-memory.dmp	upx
behavioral2/memory/1148-6-0x0000000013140000-0x000000001322D000-memory.dmp	upx
behavioral2/memory/1148-13-0x0000000013140000-0x000000001322D000-memory.dmp	upx

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

f4313881fa968ddafeeb336e2749e324_JaffaCakes118.exenotepad.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1826666146-2574340311-1877551059-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Windupdt\\winupdate.exe"	f4313881fa968ddafeeb336e2749e324_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1826666146-2574340311-1877551059-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Windupdt\\winupdate.exe"	notepad.exe

Drops file in System32 directory 1 IoCs

Processes:

explorer.exe

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\explorer.exe	explorer.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

f4313881fa968ddafeeb336e2749e324_JaffaCakes118.exef4313881fa968ddafeeb336e2749e324_JaffaCakes118.exe

description	pid	Process	procid_target
PID 1268 set thread context of 1148	1268	f4313881fa968ddafeeb336e2749e324_JaffaCakes118.exe	84
PID 1148 set thread context of 1884	1148	f4313881fa968ddafeeb336e2749e324_JaffaCakes118.exe	88

Checks processor information in registry 2 TTPs 4 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

f4313881fa968ddafeeb336e2749e324_JaffaCakes118.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	f4313881fa968ddafeeb336e2749e324_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	f4313881fa968ddafeeb336e2749e324_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	f4313881fa968ddafeeb336e2749e324_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	f4313881fa968ddafeeb336e2749e324_JaffaCakes118.exe

Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry

T1012

System Information Discovery

T1082

Processes:

f4313881fa968ddafeeb336e2749e324_JaffaCakes118.exe

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	f4313881fa968ddafeeb336e2749e324_JaffaCakes118.exe

Suspicious use of AdjustPrivilegeToken 24 IoCs

Processes:

f4313881fa968ddafeeb336e2749e324_JaffaCakes118.exe

description	pid	Process
Token: SeIncreaseQuotaPrivilege	1148	f4313881fa968ddafeeb336e2749e324_JaffaCakes118.exe
Token: SeSecurityPrivilege	1148	f4313881fa968ddafeeb336e2749e324_JaffaCakes118.exe
Token: SeTakeOwnershipPrivilege	1148	f4313881fa968ddafeeb336e2749e324_JaffaCakes118.exe
Token: SeLoadDriverPrivilege	1148	f4313881fa968ddafeeb336e2749e324_JaffaCakes118.exe
Token: SeSystemProfilePrivilege	1148	f4313881fa968ddafeeb336e2749e324_JaffaCakes118.exe
Token: SeSystemtimePrivilege	1148	f4313881fa968ddafeeb336e2749e324_JaffaCakes118.exe
Token: SeProfSingleProcessPrivilege	1148	f4313881fa968ddafeeb336e2749e324_JaffaCakes118.exe
Token: SeIncBasePriorityPrivilege	1148	f4313881fa968ddafeeb336e2749e324_JaffaCakes118.exe
Token: SeCreatePagefilePrivilege	1148	f4313881fa968ddafeeb336e2749e324_JaffaCakes118.exe
Token: SeBackupPrivilege	1148	f4313881fa968ddafeeb336e2749e324_JaffaCakes118.exe
Token: SeRestorePrivilege	1148	f4313881fa968ddafeeb336e2749e324_JaffaCakes118.exe
Token: SeShutdownPrivilege	1148	f4313881fa968ddafeeb336e2749e324_JaffaCakes118.exe
Token: SeDebugPrivilege	1148	f4313881fa968ddafeeb336e2749e324_JaffaCakes118.exe
Token: SeSystemEnvironmentPrivilege	1148	f4313881fa968ddafeeb336e2749e324_JaffaCakes118.exe
Token: SeChangeNotifyPrivilege	1148	f4313881fa968ddafeeb336e2749e324_JaffaCakes118.exe
Token: SeRemoteShutdownPrivilege	1148	f4313881fa968ddafeeb336e2749e324_JaffaCakes118.exe
Token: SeUndockPrivilege	1148	f4313881fa968ddafeeb336e2749e324_JaffaCakes118.exe
Token: SeManageVolumePrivilege	1148	f4313881fa968ddafeeb336e2749e324_JaffaCakes118.exe
Token: SeImpersonatePrivilege	1148	f4313881fa968ddafeeb336e2749e324_JaffaCakes118.exe
Token: SeCreateGlobalPrivilege	1148	f4313881fa968ddafeeb336e2749e324_JaffaCakes118.exe
Token: 33	1148	f4313881fa968ddafeeb336e2749e324_JaffaCakes118.exe
Token: 34	1148	f4313881fa968ddafeeb336e2749e324_JaffaCakes118.exe
Token: 35	1148	f4313881fa968ddafeeb336e2749e324_JaffaCakes118.exe
Token: 36	1148	f4313881fa968ddafeeb336e2749e324_JaffaCakes118.exe

Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

f4313881fa968ddafeeb336e2749e324_JaffaCakes118.exeexplorer.exe

pid	Process
1268	f4313881fa968ddafeeb336e2749e324_JaffaCakes118.exe
1884	explorer.exe

Suspicious use of WriteProcessMemory 36 IoCs

Processes:

f4313881fa968ddafeeb336e2749e324_JaffaCakes118.exef4313881fa968ddafeeb336e2749e324_JaffaCakes118.exe

description	pid	Process	procid_target
PID 1268 wrote to memory of 1148	1268	f4313881fa968ddafeeb336e2749e324_JaffaCakes118.exe	84
PID 1268 wrote to memory of 1148	1268	f4313881fa968ddafeeb336e2749e324_JaffaCakes118.exe	84
PID 1268 wrote to memory of 1148	1268	f4313881fa968ddafeeb336e2749e324_JaffaCakes118.exe	84
PID 1268 wrote to memory of 1148	1268	f4313881fa968ddafeeb336e2749e324_JaffaCakes118.exe	84
PID 1268 wrote to memory of 1148	1268	f4313881fa968ddafeeb336e2749e324_JaffaCakes118.exe	84
PID 1268 wrote to memory of 1148	1268	f4313881fa968ddafeeb336e2749e324_JaffaCakes118.exe	84
PID 1268 wrote to memory of 1148	1268	f4313881fa968ddafeeb336e2749e324_JaffaCakes118.exe	84
PID 1268 wrote to memory of 1148	1268	f4313881fa968ddafeeb336e2749e324_JaffaCakes118.exe	84
PID 1148 wrote to memory of 1640	1148	f4313881fa968ddafeeb336e2749e324_JaffaCakes118.exe	87
PID 1148 wrote to memory of 1640	1148	f4313881fa968ddafeeb336e2749e324_JaffaCakes118.exe	87
PID 1148 wrote to memory of 1640	1148	f4313881fa968ddafeeb336e2749e324_JaffaCakes118.exe	87
PID 1148 wrote to memory of 1640	1148	f4313881fa968ddafeeb336e2749e324_JaffaCakes118.exe	87
PID 1148 wrote to memory of 1640	1148	f4313881fa968ddafeeb336e2749e324_JaffaCakes118.exe	87
PID 1148 wrote to memory of 1640	1148	f4313881fa968ddafeeb336e2749e324_JaffaCakes118.exe	87
PID 1148 wrote to memory of 1640	1148	f4313881fa968ddafeeb336e2749e324_JaffaCakes118.exe	87
PID 1148 wrote to memory of 1640	1148	f4313881fa968ddafeeb336e2749e324_JaffaCakes118.exe	87
PID 1148 wrote to memory of 1640	1148	f4313881fa968ddafeeb336e2749e324_JaffaCakes118.exe	87
PID 1148 wrote to memory of 1640	1148	f4313881fa968ddafeeb336e2749e324_JaffaCakes118.exe	87
PID 1148 wrote to memory of 1640	1148	f4313881fa968ddafeeb336e2749e324_JaffaCakes118.exe	87
PID 1148 wrote to memory of 1640	1148	f4313881fa968ddafeeb336e2749e324_JaffaCakes118.exe	87
PID 1148 wrote to memory of 1640	1148	f4313881fa968ddafeeb336e2749e324_JaffaCakes118.exe	87
PID 1148 wrote to memory of 1640	1148	f4313881fa968ddafeeb336e2749e324_JaffaCakes118.exe	87
PID 1148 wrote to memory of 1640	1148	f4313881fa968ddafeeb336e2749e324_JaffaCakes118.exe	87
PID 1148 wrote to memory of 1640	1148	f4313881fa968ddafeeb336e2749e324_JaffaCakes118.exe	87
PID 1148 wrote to memory of 1640	1148	f4313881fa968ddafeeb336e2749e324_JaffaCakes118.exe	87
PID 1148 wrote to memory of 1640	1148	f4313881fa968ddafeeb336e2749e324_JaffaCakes118.exe	87
PID 1148 wrote to memory of 1640	1148	f4313881fa968ddafeeb336e2749e324_JaffaCakes118.exe	87
PID 1148 wrote to memory of 1640	1148	f4313881fa968ddafeeb336e2749e324_JaffaCakes118.exe	87
PID 1148 wrote to memory of 1640	1148	f4313881fa968ddafeeb336e2749e324_JaffaCakes118.exe	87
PID 1148 wrote to memory of 1640	1148	f4313881fa968ddafeeb336e2749e324_JaffaCakes118.exe	87
PID 1148 wrote to memory of 1640	1148	f4313881fa968ddafeeb336e2749e324_JaffaCakes118.exe	87
PID 1148 wrote to memory of 1884	1148	f4313881fa968ddafeeb336e2749e324_JaffaCakes118.exe	88
PID 1148 wrote to memory of 1884	1148	f4313881fa968ddafeeb336e2749e324_JaffaCakes118.exe	88
PID 1148 wrote to memory of 1884	1148	f4313881fa968ddafeeb336e2749e324_JaffaCakes118.exe	88
PID 1148 wrote to memory of 1884	1148	f4313881fa968ddafeeb336e2749e324_JaffaCakes118.exe	88
PID 1148 wrote to memory of 1884	1148	f4313881fa968ddafeeb336e2749e324_JaffaCakes118.exe	88

C:\Users\Admin\AppData\Local\Temp\f4313881fa968ddafeeb336e2749e324_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f4313881fa968ddafeeb336e2749e324_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1268
- C:\Users\Admin\AppData\Local\Temp\f4313881fa968ddafeeb336e2749e324_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\f4313881fa968ddafeeb336e2749e324_JaffaCakes118.exe
  2⤵
  - Modifies WinLogon for persistence
  - Checks BIOS information in registry
  - Adds Run key to start application
  - Suspicious use of SetThreadContext
  - Checks processor information in registry
  - Enumerates system info in registry
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1148
- - C:\Windows\SysWOW64\notepad.exe
    notepad
    3⤵
    - Adds Run key to start application
    PID:1640
- - C:\Windows\SysWOW64\explorer.exe
    "C:\Windows\SysWOW64\explorer.exe"
    3⤵
    - Drops file in System32 directory
    - Suspicious use of SetWindowsHookEx
    PID:1884

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

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1148-2-0x0000000013140000-0x000000001322D000-memory.dmp

Filesize
948KB

Download
memory/1148-4-0x0000000013140000-0x000000001322D000-memory.dmp

Filesize
948KB

Download
memory/1148-6-0x0000000013140000-0x000000001322D000-memory.dmp

Filesize
948KB

Download
memory/1148-7-0x00000000026B0000-0x00000000026B1000-memory.dmp

Filesize
4KB

Download
memory/1148-13-0x0000000013140000-0x000000001322D000-memory.dmp

Filesize
948KB

Download
memory/1640-9-0x00000000005C0000-0x00000000005C1000-memory.dmp

Filesize
4KB

Download
memory/1884-11-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/1884-14-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/1884-17-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download