darkcomet | 359981728f790600cdb124c43633eca94740c41deba296b672c1be6daef0d478

Analysis

max time kernel
149s
max time network
126s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
13-12-2024 07:11

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General

Target

ea81a37bc72d306aa5e19b4d71385dc4_JaffaCakes118.exe
Size

316KB
MD5

ea81a37bc72d306aa5e19b4d71385dc4
SHA1

783e2f687548e7fcaa92c03ed4361c4f598cfb54
SHA256

359981728f790600cdb124c43633eca94740c41deba296b672c1be6daef0d478
SHA512

77539bea7d2303668831bcd45fc7208be1e1be4cc45c08c584a347e5bf0c2d3208a123d39d4410ffef8efe77415a9861bc7e79a791992bfb86e0eb3f4a783eea
SSDEEP

6144:iHjwI7Ro8vT91lV7bjFZaChLXMe65ytjsK5Ae5t+R3IIhIIW:2jwARb91lVTFRjaY1WIIhII

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
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\\Favorites\\Windupdt\\winupd.exe"	ea81a37bc72d306aa5e19b4d71385dc4_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	ea81a37bc72d306aa5e19b4d71385dc4_JaffaCakes118.exe

Executes dropped EXE 1 IoCs

pid	Process
2788	winupd.exe

Loads dropped DLL 2 IoCs

pid	Process
1636	ea81a37bc72d306aa5e19b4d71385dc4_JaffaCakes118.exe
1636	ea81a37bc72d306aa5e19b4d71385dc4_JaffaCakes118.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Windows\CurrentVersion\Run\winupd = "C:\\Users\\Admin\\Favorites\\Windupdt\\winupd.exe"	ea81a37bc72d306aa5e19b4d71385dc4_JaffaCakes118.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2788 set thread context of 2256	2788	winupd.exe	32

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	ea81a37bc72d306aa5e19b4d71385dc4_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winupd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ping.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	explorer.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
1852	ping.exe

Checks processor information in registry 2 TTPs 6 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	ea81a37bc72d306aa5e19b4d71385dc4_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	ea81a37bc72d306aa5e19b4d71385dc4_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	ea81a37bc72d306aa5e19b4d71385dc4_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	ea81a37bc72d306aa5e19b4d71385dc4_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	winupd.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	explorer.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	ea81a37bc72d306aa5e19b4d71385dc4_JaffaCakes118.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1852	ping.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	1636	ea81a37bc72d306aa5e19b4d71385dc4_JaffaCakes118.exe
Token: SeSecurityPrivilege	1636	ea81a37bc72d306aa5e19b4d71385dc4_JaffaCakes118.exe
Token: SeTakeOwnershipPrivilege	1636	ea81a37bc72d306aa5e19b4d71385dc4_JaffaCakes118.exe
Token: SeLoadDriverPrivilege	1636	ea81a37bc72d306aa5e19b4d71385dc4_JaffaCakes118.exe
Token: SeSystemProfilePrivilege	1636	ea81a37bc72d306aa5e19b4d71385dc4_JaffaCakes118.exe
Token: SeSystemtimePrivilege	1636	ea81a37bc72d306aa5e19b4d71385dc4_JaffaCakes118.exe
Token: SeProfSingleProcessPrivilege	1636	ea81a37bc72d306aa5e19b4d71385dc4_JaffaCakes118.exe
Token: SeIncBasePriorityPrivilege	1636	ea81a37bc72d306aa5e19b4d71385dc4_JaffaCakes118.exe
Token: SeCreatePagefilePrivilege	1636	ea81a37bc72d306aa5e19b4d71385dc4_JaffaCakes118.exe
Token: SeBackupPrivilege	1636	ea81a37bc72d306aa5e19b4d71385dc4_JaffaCakes118.exe
Token: SeRestorePrivilege	1636	ea81a37bc72d306aa5e19b4d71385dc4_JaffaCakes118.exe
Token: SeShutdownPrivilege	1636	ea81a37bc72d306aa5e19b4d71385dc4_JaffaCakes118.exe
Token: SeDebugPrivilege	1636	ea81a37bc72d306aa5e19b4d71385dc4_JaffaCakes118.exe
Token: SeSystemEnvironmentPrivilege	1636	ea81a37bc72d306aa5e19b4d71385dc4_JaffaCakes118.exe
Token: SeChangeNotifyPrivilege	1636	ea81a37bc72d306aa5e19b4d71385dc4_JaffaCakes118.exe
Token: SeRemoteShutdownPrivilege	1636	ea81a37bc72d306aa5e19b4d71385dc4_JaffaCakes118.exe
Token: SeUndockPrivilege	1636	ea81a37bc72d306aa5e19b4d71385dc4_JaffaCakes118.exe
Token: SeManageVolumePrivilege	1636	ea81a37bc72d306aa5e19b4d71385dc4_JaffaCakes118.exe
Token: SeImpersonatePrivilege	1636	ea81a37bc72d306aa5e19b4d71385dc4_JaffaCakes118.exe
Token: SeCreateGlobalPrivilege	1636	ea81a37bc72d306aa5e19b4d71385dc4_JaffaCakes118.exe
Token: 33	1636	ea81a37bc72d306aa5e19b4d71385dc4_JaffaCakes118.exe
Token: 34	1636	ea81a37bc72d306aa5e19b4d71385dc4_JaffaCakes118.exe
Token: 35	1636	ea81a37bc72d306aa5e19b4d71385dc4_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	2788	winupd.exe
Token: SeSecurityPrivilege	2788	winupd.exe
Token: SeTakeOwnershipPrivilege	2788	winupd.exe
Token: SeLoadDriverPrivilege	2788	winupd.exe
Token: SeSystemProfilePrivilege	2788	winupd.exe
Token: SeSystemtimePrivilege	2788	winupd.exe
Token: SeProfSingleProcessPrivilege	2788	winupd.exe
Token: SeIncBasePriorityPrivilege	2788	winupd.exe
Token: SeCreatePagefilePrivilege	2788	winupd.exe
Token: SeBackupPrivilege	2788	winupd.exe
Token: SeRestorePrivilege	2788	winupd.exe
Token: SeShutdownPrivilege	2788	winupd.exe
Token: SeDebugPrivilege	2788	winupd.exe
Token: SeSystemEnvironmentPrivilege	2788	winupd.exe
Token: SeChangeNotifyPrivilege	2788	winupd.exe
Token: SeRemoteShutdownPrivilege	2788	winupd.exe
Token: SeUndockPrivilege	2788	winupd.exe
Token: SeManageVolumePrivilege	2788	winupd.exe
Token: SeImpersonatePrivilege	2788	winupd.exe
Token: SeCreateGlobalPrivilege	2788	winupd.exe
Token: 33	2788	winupd.exe
Token: 34	2788	winupd.exe
Token: 35	2788	winupd.exe
Token: SeIncreaseQuotaPrivilege	2256	explorer.exe
Token: SeSecurityPrivilege	2256	explorer.exe
Token: SeTakeOwnershipPrivilege	2256	explorer.exe
Token: SeLoadDriverPrivilege	2256	explorer.exe
Token: SeSystemProfilePrivilege	2256	explorer.exe
Token: SeSystemtimePrivilege	2256	explorer.exe
Token: SeProfSingleProcessPrivilege	2256	explorer.exe
Token: SeIncBasePriorityPrivilege	2256	explorer.exe
Token: SeCreatePagefilePrivilege	2256	explorer.exe
Token: SeBackupPrivilege	2256	explorer.exe
Token: SeRestorePrivilege	2256	explorer.exe
Token: SeShutdownPrivilege	2256	explorer.exe
Token: SeDebugPrivilege	2256	explorer.exe
Token: SeSystemEnvironmentPrivilege	2256	explorer.exe
Token: SeChangeNotifyPrivilege	2256	explorer.exe
Token: SeRemoteShutdownPrivilege	2256	explorer.exe
Token: SeUndockPrivilege	2256	explorer.exe
Token: SeManageVolumePrivilege	2256	explorer.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 1636 wrote to memory of 2284	1636	ea81a37bc72d306aa5e19b4d71385dc4_JaffaCakes118.exe	28
PID 1636 wrote to memory of 2284	1636	ea81a37bc72d306aa5e19b4d71385dc4_JaffaCakes118.exe	28
PID 1636 wrote to memory of 2284	1636	ea81a37bc72d306aa5e19b4d71385dc4_JaffaCakes118.exe	28
PID 1636 wrote to memory of 2284	1636	ea81a37bc72d306aa5e19b4d71385dc4_JaffaCakes118.exe	28
PID 1636 wrote to memory of 2788	1636	ea81a37bc72d306aa5e19b4d71385dc4_JaffaCakes118.exe	29
PID 1636 wrote to memory of 2788	1636	ea81a37bc72d306aa5e19b4d71385dc4_JaffaCakes118.exe	29
PID 1636 wrote to memory of 2788	1636	ea81a37bc72d306aa5e19b4d71385dc4_JaffaCakes118.exe	29
PID 1636 wrote to memory of 2788	1636	ea81a37bc72d306aa5e19b4d71385dc4_JaffaCakes118.exe	29
PID 1636 wrote to memory of 1852	1636	ea81a37bc72d306aa5e19b4d71385dc4_JaffaCakes118.exe	30
PID 1636 wrote to memory of 1852	1636	ea81a37bc72d306aa5e19b4d71385dc4_JaffaCakes118.exe	30
PID 1636 wrote to memory of 1852	1636	ea81a37bc72d306aa5e19b4d71385dc4_JaffaCakes118.exe	30
PID 1636 wrote to memory of 1852	1636	ea81a37bc72d306aa5e19b4d71385dc4_JaffaCakes118.exe	30
PID 2788 wrote to memory of 2256	2788	winupd.exe	32
PID 2788 wrote to memory of 2256	2788	winupd.exe	32
PID 2788 wrote to memory of 2256	2788	winupd.exe	32
PID 2788 wrote to memory of 2256	2788	winupd.exe	32
PID 2788 wrote to memory of 2256	2788	winupd.exe	32
PID 2788 wrote to memory of 2256	2788	winupd.exe	32

C:\Users\Admin\AppData\Local\Temp\ea81a37bc72d306aa5e19b4d71385dc4_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\ea81a37bc72d306aa5e19b4d71385dc4_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- Checks BIOS information in registry
- Loads dropped DLL
- Adds Run key to start application
- 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:1636
- C:\Windows\SysWOW64\explorer.exe
  "C:\Windows\SysWOW64\explorer.exe"
  2⤵
  PID:2284
- C:\Users\Admin\Favorites\Windupdt\winupd.exe
  "C:\Users\Admin\Favorites\Windupdt\winupd.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Checks processor information in registry
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2788
- - C:\Windows\SysWOW64\explorer.exe
    "C:\Windows\SysWOW64\explorer.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    - Checks processor information in registry
    - Suspicious use of AdjustPrivilegeToken
    PID:2256
- C:\Windows\SysWOW64\ping.exe
  ping 127.0.0.1 -n 5 > NUL del "C:\Users\Admin\AppData\Local\Temp\ea81a37bc72d306aa5e19b4d71385dc4_JaffaCakes118.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Runs ping.exe
  PID:1852

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

\Users\Admin\Favorites\Windupdt\winupd.exe

Filesize
316KB

MD5
ea81a37bc72d306aa5e19b4d71385dc4

SHA1
783e2f687548e7fcaa92c03ed4361c4f598cfb54

SHA256
359981728f790600cdb124c43633eca94740c41deba296b672c1be6daef0d478

SHA512
77539bea7d2303668831bcd45fc7208be1e1be4cc45c08c584a347e5bf0c2d3208a123d39d4410ffef8efe77415a9861bc7e79a791992bfb86e0eb3f4a783eea

Download Submit
memory/1636-1-0x0000000000280000-0x0000000000281000-memory.dmp

Filesize
4KB

Download
memory/1636-0-0x0000000000400000-0x00000000004E3000-memory.dmp

Filesize
908KB

Download
memory/1636-12-0x0000000000400000-0x00000000004E3000-memory.dmp

Filesize
908KB

Download
memory/1636-13-0x0000000003810000-0x00000000038F3000-memory.dmp

Filesize
908KB

Download
memory/2256-26-0x0000000000400000-0x00000000004E3000-memory.dmp

Filesize
908KB

Download
memory/2256-19-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2256-24-0x0000000000400000-0x00000000004E3000-memory.dmp

Filesize
908KB

Download
memory/2256-17-0x0000000000400000-0x00000000004E3000-memory.dmp

Filesize
908KB

Download
memory/2256-27-0x0000000000400000-0x00000000004E3000-memory.dmp

Filesize
908KB

Download
memory/2256-28-0x0000000000400000-0x00000000004E3000-memory.dmp

Filesize
908KB

Download
memory/2256-29-0x0000000000400000-0x00000000004E3000-memory.dmp

Filesize
908KB

Download
memory/2256-30-0x0000000000400000-0x00000000004E3000-memory.dmp

Filesize
908KB

Download
memory/2256-31-0x0000000000400000-0x00000000004E3000-memory.dmp

Filesize
908KB

Download
memory/2788-15-0x0000000000280000-0x0000000000281000-memory.dmp

Filesize
4KB

Download
memory/2788-25-0x0000000000400000-0x00000000004E3000-memory.dmp

Filesize
908KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads