darkcomet | a850aa3699317251edea400d0c9d4256391e426eaee220181d51e09f78b542e2

Analysis

max time kernel
140s
max time network
124s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
03-12-2024 23:45

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General

Target

bfd0430be7febebee53ae145415dd13c_JaffaCakes118.exe
Size

270KB
MD5

bfd0430be7febebee53ae145415dd13c
SHA1

58852d0aa3aa4b25a1be1b614e17b9eb83f639a7
SHA256

a850aa3699317251edea400d0c9d4256391e426eaee220181d51e09f78b542e2
SHA512

5b465023d459d3d81cd020b3bfcc4dbb67f274542d21b1b4c48bd2b8cb1e3e8366a339be8fcd7f976a1765fea1606ebdc8d8045d354fca27381946dca4cc5f88
SSDEEP

6144:blt/WszZoDkzGIf2kLh7HReIxhycXI5FYie6jVVN0:b/WKoUfXh7x6cX8Jj/N0

Score

10^/10

darkcomet discovery 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:\\system32\\winlogon.exe"	bfd0430be7febebee53ae145415dd13c_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

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	bfd0430be7febebee53ae145415dd13c_JaffaCakes118.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2039016743-699959520-214465309-1000\Software\Microsoft\Windows\CurrentVersion\Run\winlogon = "C:\\system32\\winlogon.exe"	bfd0430be7febebee53ae145415dd13c_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2039016743-699959520-214465309-1000\Software\Microsoft\Windows\CurrentVersion\Run\winlogon = "C:\\system32\\winlogon.exe"	notepad.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1528 set thread context of 2084	1528	bfd0430be7febebee53ae145415dd13c_JaffaCakes118.exe	30
PID 2084 set thread context of 2724	2084	bfd0430be7febebee53ae145415dd13c_JaffaCakes118.exe	32

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2084-6-0x0000000013140000-0x00000000131FC000-memory.dmp	upx
behavioral1/memory/2084-7-0x0000000013140000-0x00000000131FC000-memory.dmp	upx
behavioral1/memory/2084-9-0x0000000013140000-0x00000000131FC000-memory.dmp	upx
behavioral1/memory/2084-10-0x0000000013140000-0x00000000131FC000-memory.dmp	upx
behavioral1/memory/2084-11-0x0000000013140000-0x00000000131FC000-memory.dmp	upx
behavioral1/memory/2084-48-0x0000000013140000-0x00000000131FC000-memory.dmp	upx

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1928	2724	WerFault.exe	32

System Location Discovery: System Language Discovery 1 TTPs 4 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	bfd0430be7febebee53ae145415dd13c_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	bfd0430be7febebee53ae145415dd13c_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	notepad.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	explorer.exe

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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	bfd0430be7febebee53ae145415dd13c_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	bfd0430be7febebee53ae145415dd13c_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	bfd0430be7febebee53ae145415dd13c_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	bfd0430be7febebee53ae145415dd13c_JaffaCakes118.exe

Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	bfd0430be7febebee53ae145415dd13c_JaffaCakes118.exe

Suspicious use of AdjustPrivilegeToken 23 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	2084	bfd0430be7febebee53ae145415dd13c_JaffaCakes118.exe
Token: SeSecurityPrivilege	2084	bfd0430be7febebee53ae145415dd13c_JaffaCakes118.exe
Token: SeTakeOwnershipPrivilege	2084	bfd0430be7febebee53ae145415dd13c_JaffaCakes118.exe
Token: SeLoadDriverPrivilege	2084	bfd0430be7febebee53ae145415dd13c_JaffaCakes118.exe
Token: SeSystemProfilePrivilege	2084	bfd0430be7febebee53ae145415dd13c_JaffaCakes118.exe
Token: SeSystemtimePrivilege	2084	bfd0430be7febebee53ae145415dd13c_JaffaCakes118.exe
Token: SeProfSingleProcessPrivilege	2084	bfd0430be7febebee53ae145415dd13c_JaffaCakes118.exe
Token: SeIncBasePriorityPrivilege	2084	bfd0430be7febebee53ae145415dd13c_JaffaCakes118.exe
Token: SeCreatePagefilePrivilege	2084	bfd0430be7febebee53ae145415dd13c_JaffaCakes118.exe
Token: SeBackupPrivilege	2084	bfd0430be7febebee53ae145415dd13c_JaffaCakes118.exe
Token: SeRestorePrivilege	2084	bfd0430be7febebee53ae145415dd13c_JaffaCakes118.exe
Token: SeShutdownPrivilege	2084	bfd0430be7febebee53ae145415dd13c_JaffaCakes118.exe
Token: SeDebugPrivilege	2084	bfd0430be7febebee53ae145415dd13c_JaffaCakes118.exe
Token: SeSystemEnvironmentPrivilege	2084	bfd0430be7febebee53ae145415dd13c_JaffaCakes118.exe
Token: SeChangeNotifyPrivilege	2084	bfd0430be7febebee53ae145415dd13c_JaffaCakes118.exe
Token: SeRemoteShutdownPrivilege	2084	bfd0430be7febebee53ae145415dd13c_JaffaCakes118.exe
Token: SeUndockPrivilege	2084	bfd0430be7febebee53ae145415dd13c_JaffaCakes118.exe
Token: SeManageVolumePrivilege	2084	bfd0430be7febebee53ae145415dd13c_JaffaCakes118.exe
Token: SeImpersonatePrivilege	2084	bfd0430be7febebee53ae145415dd13c_JaffaCakes118.exe
Token: SeCreateGlobalPrivilege	2084	bfd0430be7febebee53ae145415dd13c_JaffaCakes118.exe
Token: 33	2084	bfd0430be7febebee53ae145415dd13c_JaffaCakes118.exe
Token: 34	2084	bfd0430be7febebee53ae145415dd13c_JaffaCakes118.exe
Token: 35	2084	bfd0430be7febebee53ae145415dd13c_JaffaCakes118.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1528	bfd0430be7febebee53ae145415dd13c_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 43 IoCs

description	pid	Process	procid_target
PID 1528 wrote to memory of 2084	1528	bfd0430be7febebee53ae145415dd13c_JaffaCakes118.exe	30
PID 1528 wrote to memory of 2084	1528	bfd0430be7febebee53ae145415dd13c_JaffaCakes118.exe	30
PID 1528 wrote to memory of 2084	1528	bfd0430be7febebee53ae145415dd13c_JaffaCakes118.exe	30
PID 1528 wrote to memory of 2084	1528	bfd0430be7febebee53ae145415dd13c_JaffaCakes118.exe	30
PID 1528 wrote to memory of 2084	1528	bfd0430be7febebee53ae145415dd13c_JaffaCakes118.exe	30
PID 1528 wrote to memory of 2084	1528	bfd0430be7febebee53ae145415dd13c_JaffaCakes118.exe	30
PID 1528 wrote to memory of 2084	1528	bfd0430be7febebee53ae145415dd13c_JaffaCakes118.exe	30
PID 1528 wrote to memory of 2084	1528	bfd0430be7febebee53ae145415dd13c_JaffaCakes118.exe	30
PID 1528 wrote to memory of 2084	1528	bfd0430be7febebee53ae145415dd13c_JaffaCakes118.exe	30
PID 2084 wrote to memory of 1200	2084	bfd0430be7febebee53ae145415dd13c_JaffaCakes118.exe	31
PID 2084 wrote to memory of 1200	2084	bfd0430be7febebee53ae145415dd13c_JaffaCakes118.exe	31
PID 2084 wrote to memory of 1200	2084	bfd0430be7febebee53ae145415dd13c_JaffaCakes118.exe	31
PID 2084 wrote to memory of 1200	2084	bfd0430be7febebee53ae145415dd13c_JaffaCakes118.exe	31
PID 2084 wrote to memory of 1200	2084	bfd0430be7febebee53ae145415dd13c_JaffaCakes118.exe	31
PID 2084 wrote to memory of 1200	2084	bfd0430be7febebee53ae145415dd13c_JaffaCakes118.exe	31
PID 2084 wrote to memory of 1200	2084	bfd0430be7febebee53ae145415dd13c_JaffaCakes118.exe	31
PID 2084 wrote to memory of 1200	2084	bfd0430be7febebee53ae145415dd13c_JaffaCakes118.exe	31
PID 2084 wrote to memory of 1200	2084	bfd0430be7febebee53ae145415dd13c_JaffaCakes118.exe	31
PID 2084 wrote to memory of 1200	2084	bfd0430be7febebee53ae145415dd13c_JaffaCakes118.exe	31
PID 2084 wrote to memory of 1200	2084	bfd0430be7febebee53ae145415dd13c_JaffaCakes118.exe	31
PID 2084 wrote to memory of 1200	2084	bfd0430be7febebee53ae145415dd13c_JaffaCakes118.exe	31
PID 2084 wrote to memory of 1200	2084	bfd0430be7febebee53ae145415dd13c_JaffaCakes118.exe	31
PID 2084 wrote to memory of 1200	2084	bfd0430be7febebee53ae145415dd13c_JaffaCakes118.exe	31
PID 2084 wrote to memory of 1200	2084	bfd0430be7febebee53ae145415dd13c_JaffaCakes118.exe	31
PID 2084 wrote to memory of 1200	2084	bfd0430be7febebee53ae145415dd13c_JaffaCakes118.exe	31
PID 2084 wrote to memory of 1200	2084	bfd0430be7febebee53ae145415dd13c_JaffaCakes118.exe	31
PID 2084 wrote to memory of 1200	2084	bfd0430be7febebee53ae145415dd13c_JaffaCakes118.exe	31
PID 2084 wrote to memory of 1200	2084	bfd0430be7febebee53ae145415dd13c_JaffaCakes118.exe	31
PID 2084 wrote to memory of 1200	2084	bfd0430be7febebee53ae145415dd13c_JaffaCakes118.exe	31
PID 2084 wrote to memory of 1200	2084	bfd0430be7febebee53ae145415dd13c_JaffaCakes118.exe	31
PID 2084 wrote to memory of 1200	2084	bfd0430be7febebee53ae145415dd13c_JaffaCakes118.exe	31
PID 2084 wrote to memory of 1200	2084	bfd0430be7febebee53ae145415dd13c_JaffaCakes118.exe	31
PID 2084 wrote to memory of 1200	2084	bfd0430be7febebee53ae145415dd13c_JaffaCakes118.exe	31
PID 2084 wrote to memory of 2724	2084	bfd0430be7febebee53ae145415dd13c_JaffaCakes118.exe	32
PID 2084 wrote to memory of 2724	2084	bfd0430be7febebee53ae145415dd13c_JaffaCakes118.exe	32
PID 2084 wrote to memory of 2724	2084	bfd0430be7febebee53ae145415dd13c_JaffaCakes118.exe	32
PID 2084 wrote to memory of 2724	2084	bfd0430be7febebee53ae145415dd13c_JaffaCakes118.exe	32
PID 2084 wrote to memory of 2724	2084	bfd0430be7febebee53ae145415dd13c_JaffaCakes118.exe	32
PID 2084 wrote to memory of 2724	2084	bfd0430be7febebee53ae145415dd13c_JaffaCakes118.exe	32
PID 2724 wrote to memory of 1928	2724	explorer.exe	33
PID 2724 wrote to memory of 1928	2724	explorer.exe	33
PID 2724 wrote to memory of 1928	2724	explorer.exe	33
PID 2724 wrote to memory of 1928	2724	explorer.exe	33

C:\Users\Admin\AppData\Local\Temp\bfd0430be7febebee53ae145415dd13c_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\bfd0430be7febebee53ae145415dd13c_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1528
- C:\Users\Admin\AppData\Local\Temp\bfd0430be7febebee53ae145415dd13c_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\bfd0430be7febebee53ae145415dd13c_JaffaCakes118.exe
  2⤵
  - Modifies WinLogon for persistence
  - Checks BIOS information in registry
  - Adds Run key to start application
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Checks processor information in registry
  - Enumerates system info in registry
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2084
- - C:\Windows\SysWOW64\notepad.exe
    notepad
    3⤵
    - Adds Run key to start application
    - System Location Discovery: System Language Discovery
    PID:1200
- - C:\Windows\SysWOW64\explorer.exe
    "C:\Windows\SysWOW64\explorer.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2724
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2724 -s 36
      4⤵
      Program crash
      PID:1928

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

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1200-38-0x0000000000230000-0x0000000000231000-memory.dmp

Filesize
4KB

Download
memory/1200-14-0x00000000000C0000-0x00000000000C1000-memory.dmp

Filesize
4KB

Download
memory/1528-0-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/1528-3-0x00000000032B0000-0x0000000003403000-memory.dmp

Filesize
1.3MB

Download
memory/1528-5-0x0000000000270000-0x0000000000279000-memory.dmp

Filesize
36KB

Download
memory/1528-8-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2084-11-0x0000000013140000-0x00000000131FC000-memory.dmp

Filesize
752KB

Download
memory/2084-10-0x0000000013140000-0x00000000131FC000-memory.dmp

Filesize
752KB

Download
memory/2084-9-0x0000000013140000-0x00000000131FC000-memory.dmp

Filesize
752KB

Download
memory/2084-12-0x0000000000280000-0x0000000000281000-memory.dmp

Filesize
4KB

Download
memory/2084-7-0x0000000013140000-0x00000000131FC000-memory.dmp

Filesize
752KB

Download
memory/2084-6-0x0000000013140000-0x00000000131FC000-memory.dmp

Filesize
752KB

Download
memory/2084-48-0x0000000013140000-0x00000000131FC000-memory.dmp

Filesize
752KB

Download
memory/2724-45-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2724-43-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2724-41-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads