darkcomet | e1f04c9b99e42c5bb10ccfd7c39143032f2e0bb2ece2059eb7ead0b463ff5f01

Analysis

max time kernel
149s
max time network
124s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
05/02/2025, 22:56

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General

Target

JaffaCakes118_a49559a200d60501832dfec97f359084.exe
Size

1.7MB
MD5

a49559a200d60501832dfec97f359084
SHA1

ca9e1cc0ab5bb028ab1563ff0bb50d775a001b3a
SHA256

e1f04c9b99e42c5bb10ccfd7c39143032f2e0bb2ece2059eb7ead0b463ff5f01
SHA512

aeda9ea95014ea2e53298d313cb970f65f6dc59d7fcc44fce1d496a132565f21a9a87cf89cb27c6c9acd340c83a1b3d607204fc4510572b07d3de07a5144cce1
SSDEEP

24576:6Un4Pm0DnaOKPdJ2if1iznaThZEvTOPm+qc9Tr2+jgc1:tg5aO3xGfRbe+V

Score

10^/10

darkcomet defense_evasion discovery persistence rat trojan

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:\\Windows\\explorer.exe"	%tmp%.exe

Disables RegEdit via registry modification 1 IoCs

defense_evasion

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000\Software\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1"	explorer.exe

Checks BIOS information in registry 2 TTPs 2 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	%tmp%.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	explorer.exe

Executes dropped EXE 1 IoCs

pid	Process
2104	%tmp%.exe

Loads dropped DLL 2 IoCs

pid	Process
2684	JaffaCakes118_a49559a200d60501832dfec97f359084.exe
2684	JaffaCakes118_a49559a200d60501832dfec97f359084.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-1-5-21-2872745919-2748461613-2989606286-1000\Software\Microsoft\Windows\CurrentVersion\Run\explorer = "C:\\Windows\\explorer.exe"	%tmp%.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\rundll32 = "C:\\Users\\Admin\\AppData\\Local\\Temp\\rundll32 .exe"	JaffaCakes118_a49559a200d60501832dfec97f359084.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2104 set thread context of 3028	2104	%tmp%.exe	32

Drops file in Windows directory 3 IoCs

description	ioc	Process
File created	C:\Windows\explorer.exe	%tmp%.exe
File opened for modification	C:\Windows\explorer.exe	%tmp%.exe
File opened for modification	C:\Windows\	%tmp%.exe

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 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	JaffaCakes118_a49559a200d60501832dfec97f359084.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	%tmp%.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	explorer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ping.exe

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
2724	ping.exe

Checks processor information in registry 2 TTPs 8 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	%tmp%.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	%tmp%.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	%tmp%.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	%tmp%.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	explorer.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	explorer.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	explorer.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	explorer.exe

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	%tmp%.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	explorer.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2724	ping.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
2684	JaffaCakes118_a49559a200d60501832dfec97f359084.exe
2684	JaffaCakes118_a49559a200d60501832dfec97f359084.exe
2684	JaffaCakes118_a49559a200d60501832dfec97f359084.exe
2684	JaffaCakes118_a49559a200d60501832dfec97f359084.exe
2684	JaffaCakes118_a49559a200d60501832dfec97f359084.exe
2684	JaffaCakes118_a49559a200d60501832dfec97f359084.exe
2684	JaffaCakes118_a49559a200d60501832dfec97f359084.exe
2684	JaffaCakes118_a49559a200d60501832dfec97f359084.exe
2684	JaffaCakes118_a49559a200d60501832dfec97f359084.exe

Suspicious use of AdjustPrivilegeToken 47 IoCs

description	pid	Process
Token: SeDebugPrivilege	2684	JaffaCakes118_a49559a200d60501832dfec97f359084.exe
Token: SeIncreaseQuotaPrivilege	2104	%tmp%.exe
Token: SeSecurityPrivilege	2104	%tmp%.exe
Token: SeTakeOwnershipPrivilege	2104	%tmp%.exe
Token: SeLoadDriverPrivilege	2104	%tmp%.exe
Token: SeSystemProfilePrivilege	2104	%tmp%.exe
Token: SeSystemtimePrivilege	2104	%tmp%.exe
Token: SeProfSingleProcessPrivilege	2104	%tmp%.exe
Token: SeIncBasePriorityPrivilege	2104	%tmp%.exe
Token: SeCreatePagefilePrivilege	2104	%tmp%.exe
Token: SeBackupPrivilege	2104	%tmp%.exe
Token: SeRestorePrivilege	2104	%tmp%.exe
Token: SeShutdownPrivilege	2104	%tmp%.exe
Token: SeDebugPrivilege	2104	%tmp%.exe
Token: SeSystemEnvironmentPrivilege	2104	%tmp%.exe
Token: SeChangeNotifyPrivilege	2104	%tmp%.exe
Token: SeRemoteShutdownPrivilege	2104	%tmp%.exe
Token: SeUndockPrivilege	2104	%tmp%.exe
Token: SeManageVolumePrivilege	2104	%tmp%.exe
Token: SeImpersonatePrivilege	2104	%tmp%.exe
Token: SeCreateGlobalPrivilege	2104	%tmp%.exe
Token: 33	2104	%tmp%.exe
Token: 34	2104	%tmp%.exe
Token: 35	2104	%tmp%.exe
Token: SeIncreaseQuotaPrivilege	3028	explorer.exe
Token: SeSecurityPrivilege	3028	explorer.exe
Token: SeTakeOwnershipPrivilege	3028	explorer.exe
Token: SeLoadDriverPrivilege	3028	explorer.exe
Token: SeSystemProfilePrivilege	3028	explorer.exe
Token: SeSystemtimePrivilege	3028	explorer.exe
Token: SeProfSingleProcessPrivilege	3028	explorer.exe
Token: SeIncBasePriorityPrivilege	3028	explorer.exe
Token: SeCreatePagefilePrivilege	3028	explorer.exe
Token: SeBackupPrivilege	3028	explorer.exe
Token: SeRestorePrivilege	3028	explorer.exe
Token: SeShutdownPrivilege	3028	explorer.exe
Token: SeDebugPrivilege	3028	explorer.exe
Token: SeSystemEnvironmentPrivilege	3028	explorer.exe
Token: SeChangeNotifyPrivilege	3028	explorer.exe
Token: SeRemoteShutdownPrivilege	3028	explorer.exe
Token: SeUndockPrivilege	3028	explorer.exe
Token: SeManageVolumePrivilege	3028	explorer.exe
Token: SeImpersonatePrivilege	3028	explorer.exe
Token: SeCreateGlobalPrivilege	3028	explorer.exe
Token: 33	3028	explorer.exe
Token: 34	3028	explorer.exe
Token: 35	3028	explorer.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3028	explorer.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 2684 wrote to memory of 2104	2684	JaffaCakes118_a49559a200d60501832dfec97f359084.exe	31
PID 2684 wrote to memory of 2104	2684	JaffaCakes118_a49559a200d60501832dfec97f359084.exe	31
PID 2684 wrote to memory of 2104	2684	JaffaCakes118_a49559a200d60501832dfec97f359084.exe	31
PID 2684 wrote to memory of 2104	2684	JaffaCakes118_a49559a200d60501832dfec97f359084.exe	31
PID 2104 wrote to memory of 3028	2104	%tmp%.exe	32
PID 2104 wrote to memory of 3028	2104	%tmp%.exe	32
PID 2104 wrote to memory of 3028	2104	%tmp%.exe	32
PID 2104 wrote to memory of 3028	2104	%tmp%.exe	32
PID 2104 wrote to memory of 3028	2104	%tmp%.exe	32
PID 2104 wrote to memory of 3028	2104	%tmp%.exe	32
PID 2104 wrote to memory of 2724	2104	%tmp%.exe	33
PID 2104 wrote to memory of 2724	2104	%tmp%.exe	33
PID 2104 wrote to memory of 2724	2104	%tmp%.exe	33
PID 2104 wrote to memory of 2724	2104	%tmp%.exe	33

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a49559a200d60501832dfec97f359084.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a49559a200d60501832dfec97f359084.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2684
- C:\Users\Admin\AppData\Local\Temp\%tmp%.exe
  "C:\Users\Admin\AppData\Local\Temp\%tmp%.exe"
  2⤵
  - Modifies WinLogon for persistence
  - Checks BIOS information in registry
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of SetThreadContext
  - Drops file in Windows directory
  - 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:2104
- - C:\Windows\SysWOW64\explorer.exe
    "C:\Windows\SysWOW64\explorer.exe"
    3⤵
    - Disables RegEdit via registry modification
    - Checks BIOS information in registry
    - System Location Discovery: System Language Discovery
    - Checks processor information in registry
    - Enumerates system info in registry
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:3028
- - C:\Windows\SysWOW64\ping.exe
    ping 127.0.0.1 -n 5 > NUL del "C:\Users\Admin\AppData\Local\Temp\%tmp%.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:2724

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

Remote System Discovery

T1018

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

System Network Configuration Discovery

T1016

Internet Connection Discovery

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\%tmp%.exe

Filesize
635KB

MD5
8ddae772b95541b0ba1c87d64303bb1b

SHA1
3bc9c2d2ee9cf85d5cd121f8441b0e8636d89e91

SHA256
77499158cdf249e9f8e31d1f78d202f042e6f68cd05b11c86f2c355c9f598699

SHA512
6a1fe5daf9972d79cf3b5f7e8cd8014b33b19b54048a34640546bcd15a74fdb187373432fe0056e0f4e431ff45450e735edcf0186fce08feb071eec4a6f6a92f

Download Submit
memory/2104-27-0x00000000743F0000-0x0000000074EAA000-memory.dmp

Filesize
10.7MB

Download
memory/2104-24-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2684-16-0x0000000074A80000-0x000000007502B000-memory.dmp

Filesize
5.7MB

Download
memory/2684-2-0x0000000074A80000-0x000000007502B000-memory.dmp

Filesize
5.7MB

Download
memory/2684-1-0x0000000074A80000-0x000000007502B000-memory.dmp

Filesize
5.7MB

Download
memory/2684-0-0x0000000074A81000-0x0000000074A82000-memory.dmp

Filesize
4KB

Download
memory/3028-25-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/3028-20-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/3028-18-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/3028-22-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/3028-26-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/3028-30-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/3028-29-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/3028-28-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/3028-23-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/3028-31-0x00000000743F0000-0x0000000074EAA000-memory.dmp

Filesize
10.7MB

Download