darkcomet | 58034edceb6acc19031c2c373880f34d939a77943feceb87a426c3748c7e99c1

Analysis

max time kernel
150s
max time network
124s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
16-10-2024 12:07

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General

Target

4cc206e536eb20827ac8b404fbfadee7_JaffaCakes118.exe
Size

330KB
MD5

4cc206e536eb20827ac8b404fbfadee7
SHA1

901d7be23fc9ec8acd872f1ef8c737948fa8d893
SHA256

58034edceb6acc19031c2c373880f34d939a77943feceb87a426c3748c7e99c1
SHA512

e13495f8dca68c525a99ff633be476b29ec1a40b52aa0df40baa6bda1fd44bed83c3b3d7d9ac28406ed5fac2927233086b1107817321d6cf7d0dfa09656ceb04
SSDEEP

6144:Q4CFfifD2gVKVTQQ249HZ52KTh9XKOCgLJacj5/AZtRse4A7qjM9e:QXgr8VMQDT52WXKq9fj5/AZjB4A2Ye

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

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

Processes:

4cc206e536eb20827ac8b404fbfadee7_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"	4cc206e536eb20827ac8b404fbfadee7_JaffaCakes118.exe

Checks BIOS information in registry 2 TTPs 3 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

Processes:

4cc206e536eb20827ac8b404fbfadee7_JaffaCakes118.exeexplorer.exewinupdate.exe

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	4cc206e536eb20827ac8b404fbfadee7_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	explorer.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	winupdate.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

4cc206e536eb20827ac8b404fbfadee7_JaffaCakes118.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	4cc206e536eb20827ac8b404fbfadee7_JaffaCakes118.exe

Executes dropped EXE 1 IoCs

Processes:

winupdate.exe

pid	Process
1388	winupdate.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

4cc206e536eb20827ac8b404fbfadee7_JaffaCakes118.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Windupdt\\winupdate.exe"	4cc206e536eb20827ac8b404fbfadee7_JaffaCakes118.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

4cc206e536eb20827ac8b404fbfadee7_JaffaCakes118.exe

description	pid	Process	procid_target
PID 936 set thread context of 4772	936	4cc206e536eb20827ac8b404fbfadee7_JaffaCakes118.exe	92

UPX packed file 16 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/936-0-0x0000000000400000-0x00000000004E6000-memory.dmp	upx
behavioral2/memory/4772-6-0x0000000000400000-0x00000000004E6000-memory.dmp	upx
behavioral2/memory/4772-4-0x0000000000400000-0x00000000004E6000-memory.dmp	upx
behavioral2/memory/4772-8-0x0000000000400000-0x00000000004E6000-memory.dmp	upx
behavioral2/memory/4772-13-0x0000000000400000-0x00000000004E6000-memory.dmp	upx
behavioral2/memory/4772-11-0x0000000000400000-0x00000000004E6000-memory.dmp	upx
behavioral2/memory/4772-12-0x0000000000400000-0x00000000004E6000-memory.dmp	upx
behavioral2/memory/4772-10-0x0000000000400000-0x00000000004E6000-memory.dmp	upx
behavioral2/files/0x0009000000023c4e-17.dat	upx
behavioral2/memory/1388-23-0x0000000000400000-0x00000000004E6000-memory.dmp	upx
behavioral2/memory/936-25-0x0000000000400000-0x00000000004E6000-memory.dmp	upx
behavioral2/memory/936-22-0x0000000000400000-0x00000000004E6000-memory.dmp	upx
behavioral2/memory/4772-7-0x0000000000400000-0x00000000004E6000-memory.dmp	upx
behavioral2/memory/4772-9-0x0000000000400000-0x00000000004E6000-memory.dmp	upx
behavioral2/memory/1388-26-0x0000000000400000-0x00000000004E6000-memory.dmp	upx
behavioral2/memory/4772-27-0x0000000000400000-0x00000000004E6000-memory.dmp	upx

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

Processes:

explorer.exewinupdate.exeping.exe4cc206e536eb20827ac8b404fbfadee7_JaffaCakes118.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	explorer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winupdate.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ping.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4cc206e536eb20827ac8b404fbfadee7_JaffaCakes118.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

Processes:

ping.exe

pid	Process
1484	ping.exe

Checks processor information in registry 2 TTPs 12 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

Processes:

4cc206e536eb20827ac8b404fbfadee7_JaffaCakes118.exeexplorer.exewinupdate.exe

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	4cc206e536eb20827ac8b404fbfadee7_JaffaCakes118.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\ProcessorNameString	winupdate.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	winupdate.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	4cc206e536eb20827ac8b404fbfadee7_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	4cc206e536eb20827ac8b404fbfadee7_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	4cc206e536eb20827ac8b404fbfadee7_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	winupdate.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	explorer.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	explorer.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	winupdate.exe

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

Processes:

4cc206e536eb20827ac8b404fbfadee7_JaffaCakes118.exeexplorer.exewinupdate.exe

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	4cc206e536eb20827ac8b404fbfadee7_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	explorer.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	winupdate.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

Processes:

ping.exe

pid	Process
1484	ping.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

Processes:

4cc206e536eb20827ac8b404fbfadee7_JaffaCakes118.exeexplorer.exewinupdate.exe

description	pid	Process
Token: SeIncreaseQuotaPrivilege	936	4cc206e536eb20827ac8b404fbfadee7_JaffaCakes118.exe
Token: SeSecurityPrivilege	936	4cc206e536eb20827ac8b404fbfadee7_JaffaCakes118.exe
Token: SeTakeOwnershipPrivilege	936	4cc206e536eb20827ac8b404fbfadee7_JaffaCakes118.exe
Token: SeLoadDriverPrivilege	936	4cc206e536eb20827ac8b404fbfadee7_JaffaCakes118.exe
Token: SeSystemProfilePrivilege	936	4cc206e536eb20827ac8b404fbfadee7_JaffaCakes118.exe
Token: SeSystemtimePrivilege	936	4cc206e536eb20827ac8b404fbfadee7_JaffaCakes118.exe
Token: SeProfSingleProcessPrivilege	936	4cc206e536eb20827ac8b404fbfadee7_JaffaCakes118.exe
Token: SeIncBasePriorityPrivilege	936	4cc206e536eb20827ac8b404fbfadee7_JaffaCakes118.exe
Token: SeCreatePagefilePrivilege	936	4cc206e536eb20827ac8b404fbfadee7_JaffaCakes118.exe
Token: SeBackupPrivilege	936	4cc206e536eb20827ac8b404fbfadee7_JaffaCakes118.exe
Token: SeRestorePrivilege	936	4cc206e536eb20827ac8b404fbfadee7_JaffaCakes118.exe
Token: SeShutdownPrivilege	936	4cc206e536eb20827ac8b404fbfadee7_JaffaCakes118.exe
Token: SeDebugPrivilege	936	4cc206e536eb20827ac8b404fbfadee7_JaffaCakes118.exe
Token: SeSystemEnvironmentPrivilege	936	4cc206e536eb20827ac8b404fbfadee7_JaffaCakes118.exe
Token: SeChangeNotifyPrivilege	936	4cc206e536eb20827ac8b404fbfadee7_JaffaCakes118.exe
Token: SeRemoteShutdownPrivilege	936	4cc206e536eb20827ac8b404fbfadee7_JaffaCakes118.exe
Token: SeUndockPrivilege	936	4cc206e536eb20827ac8b404fbfadee7_JaffaCakes118.exe
Token: SeManageVolumePrivilege	936	4cc206e536eb20827ac8b404fbfadee7_JaffaCakes118.exe
Token: SeImpersonatePrivilege	936	4cc206e536eb20827ac8b404fbfadee7_JaffaCakes118.exe
Token: SeCreateGlobalPrivilege	936	4cc206e536eb20827ac8b404fbfadee7_JaffaCakes118.exe
Token: 33	936	4cc206e536eb20827ac8b404fbfadee7_JaffaCakes118.exe
Token: 34	936	4cc206e536eb20827ac8b404fbfadee7_JaffaCakes118.exe
Token: 35	936	4cc206e536eb20827ac8b404fbfadee7_JaffaCakes118.exe
Token: 36	936	4cc206e536eb20827ac8b404fbfadee7_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	4772	explorer.exe
Token: SeSecurityPrivilege	4772	explorer.exe
Token: SeTakeOwnershipPrivilege	4772	explorer.exe
Token: SeLoadDriverPrivilege	4772	explorer.exe
Token: SeSystemProfilePrivilege	4772	explorer.exe
Token: SeSystemtimePrivilege	4772	explorer.exe
Token: SeProfSingleProcessPrivilege	4772	explorer.exe
Token: SeIncBasePriorityPrivilege	4772	explorer.exe
Token: SeCreatePagefilePrivilege	4772	explorer.exe
Token: SeBackupPrivilege	4772	explorer.exe
Token: SeRestorePrivilege	4772	explorer.exe
Token: SeShutdownPrivilege	4772	explorer.exe
Token: SeDebugPrivilege	4772	explorer.exe
Token: SeSystemEnvironmentPrivilege	4772	explorer.exe
Token: SeChangeNotifyPrivilege	4772	explorer.exe
Token: SeRemoteShutdownPrivilege	4772	explorer.exe
Token: SeUndockPrivilege	4772	explorer.exe
Token: SeManageVolumePrivilege	4772	explorer.exe
Token: SeImpersonatePrivilege	4772	explorer.exe
Token: SeCreateGlobalPrivilege	4772	explorer.exe
Token: 33	4772	explorer.exe
Token: 34	4772	explorer.exe
Token: 35	4772	explorer.exe
Token: 36	4772	explorer.exe
Token: SeIncreaseQuotaPrivilege	1388	winupdate.exe
Token: SeSecurityPrivilege	1388	winupdate.exe
Token: SeTakeOwnershipPrivilege	1388	winupdate.exe
Token: SeLoadDriverPrivilege	1388	winupdate.exe
Token: SeSystemProfilePrivilege	1388	winupdate.exe
Token: SeSystemtimePrivilege	1388	winupdate.exe
Token: SeProfSingleProcessPrivilege	1388	winupdate.exe
Token: SeIncBasePriorityPrivilege	1388	winupdate.exe
Token: SeCreatePagefilePrivilege	1388	winupdate.exe
Token: SeBackupPrivilege	1388	winupdate.exe
Token: SeRestorePrivilege	1388	winupdate.exe
Token: SeShutdownPrivilege	1388	winupdate.exe
Token: SeDebugPrivilege	1388	winupdate.exe
Token: SeSystemEnvironmentPrivilege	1388	winupdate.exe
Token: SeChangeNotifyPrivilege	1388	winupdate.exe
Token: SeRemoteShutdownPrivilege	1388	winupdate.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

explorer.exe

pid	Process
4772	explorer.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

4cc206e536eb20827ac8b404fbfadee7_JaffaCakes118.exe

description	pid	Process	procid_target
PID 936 wrote to memory of 4772	936	4cc206e536eb20827ac8b404fbfadee7_JaffaCakes118.exe	92
PID 936 wrote to memory of 4772	936	4cc206e536eb20827ac8b404fbfadee7_JaffaCakes118.exe	92
PID 936 wrote to memory of 4772	936	4cc206e536eb20827ac8b404fbfadee7_JaffaCakes118.exe	92
PID 936 wrote to memory of 4772	936	4cc206e536eb20827ac8b404fbfadee7_JaffaCakes118.exe	92
PID 936 wrote to memory of 4772	936	4cc206e536eb20827ac8b404fbfadee7_JaffaCakes118.exe	92
PID 936 wrote to memory of 1388	936	4cc206e536eb20827ac8b404fbfadee7_JaffaCakes118.exe	93
PID 936 wrote to memory of 1388	936	4cc206e536eb20827ac8b404fbfadee7_JaffaCakes118.exe	93
PID 936 wrote to memory of 1388	936	4cc206e536eb20827ac8b404fbfadee7_JaffaCakes118.exe	93
PID 936 wrote to memory of 1484	936	4cc206e536eb20827ac8b404fbfadee7_JaffaCakes118.exe	94
PID 936 wrote to memory of 1484	936	4cc206e536eb20827ac8b404fbfadee7_JaffaCakes118.exe	94
PID 936 wrote to memory of 1484	936	4cc206e536eb20827ac8b404fbfadee7_JaffaCakes118.exe	94

C:\Users\Admin\AppData\Local\Temp\4cc206e536eb20827ac8b404fbfadee7_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\4cc206e536eb20827ac8b404fbfadee7_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- Checks BIOS information in registry
- Checks computer location settings
- 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:936
- 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
  - Suspicious use of SetWindowsHookEx
  PID:4772
- C:\Windupdt\winupdate.exe
  "C:\Windupdt\winupdate.exe"
  2⤵
  - Checks BIOS information in registry
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Checks processor information in registry
  - Enumerates system info in registry
  - Suspicious use of AdjustPrivilegeToken
  PID:1388
- C:\Windows\SysWOW64\ping.exe
  ping 127.0.0.1 -n 5 > NUL del "C:\Users\Admin\AppData\Local\Temp\4cc206e536eb20827ac8b404fbfadee7_JaffaCakes118.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Runs ping.exe
  PID:1484

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:\Windupdt\winupdate.exe

Filesize
330KB

MD5
4cc206e536eb20827ac8b404fbfadee7

SHA1
901d7be23fc9ec8acd872f1ef8c737948fa8d893

SHA256
58034edceb6acc19031c2c373880f34d939a77943feceb87a426c3748c7e99c1

SHA512
e13495f8dca68c525a99ff633be476b29ec1a40b52aa0df40baa6bda1fd44bed83c3b3d7d9ac28406ed5fac2927233086b1107817321d6cf7d0dfa09656ceb04

Download Submit
memory/936-1-0x00000000022E0000-0x00000000022E1000-memory.dmp

Filesize
4KB

Download
memory/936-22-0x0000000000400000-0x00000000004E6000-memory.dmp

Filesize
920KB

Download
memory/936-0-0x0000000000400000-0x00000000004E6000-memory.dmp

Filesize
920KB

Download
memory/936-25-0x0000000000400000-0x00000000004E6000-memory.dmp

Filesize
920KB

Download
memory/1388-26-0x0000000000400000-0x00000000004E6000-memory.dmp

Filesize
920KB

Download
memory/1388-23-0x0000000000400000-0x00000000004E6000-memory.dmp

Filesize
920KB

Download
memory/4772-8-0x0000000000400000-0x00000000004E6000-memory.dmp

Filesize
920KB

Download
memory/4772-12-0x0000000000400000-0x00000000004E6000-memory.dmp

Filesize
920KB

Download
memory/4772-10-0x0000000000400000-0x00000000004E6000-memory.dmp

Filesize
920KB

Download
memory/4772-11-0x0000000000400000-0x00000000004E6000-memory.dmp

Filesize
920KB

Download
memory/4772-13-0x0000000000400000-0x00000000004E6000-memory.dmp

Filesize
920KB

Download
memory/4772-14-0x0000000002F10000-0x0000000002F11000-memory.dmp

Filesize
4KB

Download
memory/4772-4-0x0000000000400000-0x00000000004E6000-memory.dmp

Filesize
920KB

Download
memory/4772-7-0x0000000000400000-0x00000000004E6000-memory.dmp

Filesize
920KB

Download
memory/4772-9-0x0000000000400000-0x00000000004E6000-memory.dmp

Filesize
920KB

Download
memory/4772-6-0x0000000000400000-0x00000000004E6000-memory.dmp

Filesize
920KB

Download
memory/4772-27-0x0000000000400000-0x00000000004E6000-memory.dmp

Filesize
920KB

Download