darkcomet | 28aa6312df9de132a6953f1c1ccd654e7ec6935a739cd9a35e9699b7c9740a10

Analysis

max time kernel
138s
max time network
148s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
22/08/2024, 14:07

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General

Target

b7eea6971453584c9c0caec2f044108c_JaffaCakes118.exe
Size

757KB
MD5

b7eea6971453584c9c0caec2f044108c
SHA1

28a9bd2260f89a90de8a2ed49c492f967f130c0c
SHA256

28aa6312df9de132a6953f1c1ccd654e7ec6935a739cd9a35e9699b7c9740a10
SHA512

9e886116eacd9e6766c192a7ef0e91d9fb67a202ba8d0552f0495657158db310dade6355d8e53ffa97708fd66da2312b16fd6ee8d5c6f8708b490737763ae331
SSDEEP

12288:h9AFlAd0Z+89cxTGzO4AucTD8QP2lmFSrVs9LqnKcNY:XAQ6Zx9cxTmOrucTIEFSpOGpNY

Score

10^/10

darkcomet discovery persistence rat trojan

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:\\Windupdt\\winupdate.exe"	b7eea6971453584c9c0caec2f044108c_JaffaCakes118.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	b7eea6971453584c9c0caec2f044108c_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	explorer.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-1-5-21-3450744190-3404161390-554719085-1000\Software\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Windupdt\\winupdate.exe"	b7eea6971453584c9c0caec2f044108c_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3450744190-3404161390-554719085-1000\Software\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Windupdt\\winupdate.exe"	notepad.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1944 set thread context of 2884	1944	b7eea6971453584c9c0caec2f044108c_JaffaCakes118.exe	32

System Location Discovery: System Language Discovery 1 TTPs 3 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	b7eea6971453584c9c0caec2f044108c_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 8 IoCs

Processor 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\CentralProcessor\0\ProcessorNameString	b7eea6971453584c9c0caec2f044108c_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	b7eea6971453584c9c0caec2f044108c_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	b7eea6971453584c9c0caec2f044108c_JaffaCakes118.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
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	b7eea6971453584c9c0caec2f044108c_JaffaCakes118.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	b7eea6971453584c9c0caec2f044108c_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	explorer.exe

Suspicious use of AdjustPrivilegeToken 46 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	1944	b7eea6971453584c9c0caec2f044108c_JaffaCakes118.exe
Token: SeSecurityPrivilege	1944	b7eea6971453584c9c0caec2f044108c_JaffaCakes118.exe
Token: SeTakeOwnershipPrivilege	1944	b7eea6971453584c9c0caec2f044108c_JaffaCakes118.exe
Token: SeLoadDriverPrivilege	1944	b7eea6971453584c9c0caec2f044108c_JaffaCakes118.exe
Token: SeSystemProfilePrivilege	1944	b7eea6971453584c9c0caec2f044108c_JaffaCakes118.exe
Token: SeSystemtimePrivilege	1944	b7eea6971453584c9c0caec2f044108c_JaffaCakes118.exe
Token: SeProfSingleProcessPrivilege	1944	b7eea6971453584c9c0caec2f044108c_JaffaCakes118.exe
Token: SeIncBasePriorityPrivilege	1944	b7eea6971453584c9c0caec2f044108c_JaffaCakes118.exe
Token: SeCreatePagefilePrivilege	1944	b7eea6971453584c9c0caec2f044108c_JaffaCakes118.exe
Token: SeBackupPrivilege	1944	b7eea6971453584c9c0caec2f044108c_JaffaCakes118.exe
Token: SeRestorePrivilege	1944	b7eea6971453584c9c0caec2f044108c_JaffaCakes118.exe
Token: SeShutdownPrivilege	1944	b7eea6971453584c9c0caec2f044108c_JaffaCakes118.exe
Token: SeDebugPrivilege	1944	b7eea6971453584c9c0caec2f044108c_JaffaCakes118.exe
Token: SeSystemEnvironmentPrivilege	1944	b7eea6971453584c9c0caec2f044108c_JaffaCakes118.exe
Token: SeChangeNotifyPrivilege	1944	b7eea6971453584c9c0caec2f044108c_JaffaCakes118.exe
Token: SeRemoteShutdownPrivilege	1944	b7eea6971453584c9c0caec2f044108c_JaffaCakes118.exe
Token: SeUndockPrivilege	1944	b7eea6971453584c9c0caec2f044108c_JaffaCakes118.exe
Token: SeManageVolumePrivilege	1944	b7eea6971453584c9c0caec2f044108c_JaffaCakes118.exe
Token: SeImpersonatePrivilege	1944	b7eea6971453584c9c0caec2f044108c_JaffaCakes118.exe
Token: SeCreateGlobalPrivilege	1944	b7eea6971453584c9c0caec2f044108c_JaffaCakes118.exe
Token: 33	1944	b7eea6971453584c9c0caec2f044108c_JaffaCakes118.exe
Token: 34	1944	b7eea6971453584c9c0caec2f044108c_JaffaCakes118.exe
Token: 35	1944	b7eea6971453584c9c0caec2f044108c_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	2884	explorer.exe
Token: SeSecurityPrivilege	2884	explorer.exe
Token: SeTakeOwnershipPrivilege	2884	explorer.exe
Token: SeLoadDriverPrivilege	2884	explorer.exe
Token: SeSystemProfilePrivilege	2884	explorer.exe
Token: SeSystemtimePrivilege	2884	explorer.exe
Token: SeProfSingleProcessPrivilege	2884	explorer.exe
Token: SeIncBasePriorityPrivilege	2884	explorer.exe
Token: SeCreatePagefilePrivilege	2884	explorer.exe
Token: SeBackupPrivilege	2884	explorer.exe
Token: SeRestorePrivilege	2884	explorer.exe
Token: SeShutdownPrivilege	2884	explorer.exe
Token: SeDebugPrivilege	2884	explorer.exe
Token: SeSystemEnvironmentPrivilege	2884	explorer.exe
Token: SeChangeNotifyPrivilege	2884	explorer.exe
Token: SeRemoteShutdownPrivilege	2884	explorer.exe
Token: SeUndockPrivilege	2884	explorer.exe
Token: SeManageVolumePrivilege	2884	explorer.exe
Token: SeImpersonatePrivilege	2884	explorer.exe
Token: SeCreateGlobalPrivilege	2884	explorer.exe
Token: 33	2884	explorer.exe
Token: 34	2884	explorer.exe
Token: 35	2884	explorer.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1944 wrote to memory of 2108	1944	b7eea6971453584c9c0caec2f044108c_JaffaCakes118.exe	31
PID 1944 wrote to memory of 2108	1944	b7eea6971453584c9c0caec2f044108c_JaffaCakes118.exe	31
PID 1944 wrote to memory of 2108	1944	b7eea6971453584c9c0caec2f044108c_JaffaCakes118.exe	31
PID 1944 wrote to memory of 2108	1944	b7eea6971453584c9c0caec2f044108c_JaffaCakes118.exe	31
PID 1944 wrote to memory of 2108	1944	b7eea6971453584c9c0caec2f044108c_JaffaCakes118.exe	31
PID 1944 wrote to memory of 2108	1944	b7eea6971453584c9c0caec2f044108c_JaffaCakes118.exe	31
PID 1944 wrote to memory of 2108	1944	b7eea6971453584c9c0caec2f044108c_JaffaCakes118.exe	31
PID 1944 wrote to memory of 2108	1944	b7eea6971453584c9c0caec2f044108c_JaffaCakes118.exe	31
PID 1944 wrote to memory of 2108	1944	b7eea6971453584c9c0caec2f044108c_JaffaCakes118.exe	31
PID 1944 wrote to memory of 2108	1944	b7eea6971453584c9c0caec2f044108c_JaffaCakes118.exe	31
PID 1944 wrote to memory of 2108	1944	b7eea6971453584c9c0caec2f044108c_JaffaCakes118.exe	31
PID 1944 wrote to memory of 2108	1944	b7eea6971453584c9c0caec2f044108c_JaffaCakes118.exe	31
PID 1944 wrote to memory of 2108	1944	b7eea6971453584c9c0caec2f044108c_JaffaCakes118.exe	31
PID 1944 wrote to memory of 2108	1944	b7eea6971453584c9c0caec2f044108c_JaffaCakes118.exe	31
PID 1944 wrote to memory of 2108	1944	b7eea6971453584c9c0caec2f044108c_JaffaCakes118.exe	31
PID 1944 wrote to memory of 2108	1944	b7eea6971453584c9c0caec2f044108c_JaffaCakes118.exe	31
PID 1944 wrote to memory of 2108	1944	b7eea6971453584c9c0caec2f044108c_JaffaCakes118.exe	31
PID 1944 wrote to memory of 2108	1944	b7eea6971453584c9c0caec2f044108c_JaffaCakes118.exe	31
PID 1944 wrote to memory of 2108	1944	b7eea6971453584c9c0caec2f044108c_JaffaCakes118.exe	31
PID 1944 wrote to memory of 2108	1944	b7eea6971453584c9c0caec2f044108c_JaffaCakes118.exe	31
PID 1944 wrote to memory of 2108	1944	b7eea6971453584c9c0caec2f044108c_JaffaCakes118.exe	31
PID 1944 wrote to memory of 2108	1944	b7eea6971453584c9c0caec2f044108c_JaffaCakes118.exe	31
PID 1944 wrote to memory of 2108	1944	b7eea6971453584c9c0caec2f044108c_JaffaCakes118.exe	31
PID 1944 wrote to memory of 2108	1944	b7eea6971453584c9c0caec2f044108c_JaffaCakes118.exe	31
PID 1944 wrote to memory of 2884	1944	b7eea6971453584c9c0caec2f044108c_JaffaCakes118.exe	32
PID 1944 wrote to memory of 2884	1944	b7eea6971453584c9c0caec2f044108c_JaffaCakes118.exe	32
PID 1944 wrote to memory of 2884	1944	b7eea6971453584c9c0caec2f044108c_JaffaCakes118.exe	32
PID 1944 wrote to memory of 2884	1944	b7eea6971453584c9c0caec2f044108c_JaffaCakes118.exe	32
PID 1944 wrote to memory of 2884	1944	b7eea6971453584c9c0caec2f044108c_JaffaCakes118.exe	32
PID 1944 wrote to memory of 2884	1944	b7eea6971453584c9c0caec2f044108c_JaffaCakes118.exe	32

C:\Users\Admin\AppData\Local\Temp\b7eea6971453584c9c0caec2f044108c_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\b7eea6971453584c9c0caec2f044108c_JaffaCakes118.exe"
1⤵
- 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:1944
- C:\Windows\SysWOW64\notepad.exe
  notepad
  2⤵
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  PID:2108
- C:\Windows\SysWOW64\explorer.exe
  "C:\Windows\SysWOW64\explorer.exe"
  2⤵
  - 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
  PID:2884

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

C:\Windupdt\winupdate.exe

Filesize
757KB

MD5
b7eea6971453584c9c0caec2f044108c

SHA1
28a9bd2260f89a90de8a2ed49c492f967f130c0c

SHA256
28aa6312df9de132a6953f1c1ccd654e7ec6935a739cd9a35e9699b7c9740a10

SHA512
9e886116eacd9e6766c192a7ef0e91d9fb67a202ba8d0552f0495657158db310dade6355d8e53ffa97708fd66da2312b16fd6ee8d5c6f8708b490737763ae331

Download Submit
memory/1944-0-0x00000000002A0000-0x00000000002A1000-memory.dmp

Filesize
4KB

Download
memory/1944-41-0x0000000013140000-0x000000001320F000-memory.dmp

Filesize
828KB

Download
memory/2108-2-0x0000000000080000-0x0000000000081000-memory.dmp

Filesize
4KB

Download
memory/2108-28-0x0000000000240000-0x0000000000241000-memory.dmp

Filesize
4KB

Download
memory/2884-38-0x0000000013140000-0x000000001320F000-memory.dmp

Filesize
828KB

Download
memory/2884-39-0x0000000013140000-0x000000001320F000-memory.dmp

Filesize
828KB

Download
memory/2884-36-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2884-34-0x0000000013140000-0x000000001320F000-memory.dmp

Filesize
828KB

Download
memory/2884-42-0x0000000013140000-0x000000001320F000-memory.dmp

Filesize
828KB

Download
memory/2884-40-0x0000000013140000-0x000000001320F000-memory.dmp

Filesize
828KB

Download
memory/2884-43-0x0000000000160000-0x0000000000161000-memory.dmp

Filesize
4KB

Download
memory/2884-45-0x0000000013140000-0x000000001320F000-memory.dmp

Filesize
828KB

Download
memory/2884-44-0x0000000013140000-0x000000001320F000-memory.dmp

Filesize
828KB

Download
memory/2884-46-0x0000000013140000-0x000000001320F000-memory.dmp

Filesize
828KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads