darkcomet | 314eca135f6a094d3e919a2242db81822caae45651b5d452caba587a8be4b5bf

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
14/10/2024, 17:01

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General

Target

433de5f365427f0050c03bbdc0743eba_JaffaCakes118.exe
Size

340KB
MD5

433de5f365427f0050c03bbdc0743eba
SHA1

125d358f3e8b0dac7d34342949a317e78518ac52
SHA256

314eca135f6a094d3e919a2242db81822caae45651b5d452caba587a8be4b5bf
SHA512

480aeff5b5794bbdbd66af87e5d760bedbb16869ec6bd3e6ff5111e201d43cc7619ad1e83d2c95598c59f7d6320cf9b683be51cf11ec87266b6725f5f754a2d8
SSDEEP

6144:s1iJcYtR1HsvpSHY7KoSrfTNBuzZZcA1wnOLrMM4qFd/S:skHcpSHY7VSrfT2/czO3HX6

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

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Windupdt\\winupdate.exe"	433de5f365427f0050c03bbdc0743eba_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	433de5f365427f0050c03bbdc0743eba_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-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Windupdt\\winupdate.exe"	433de5f365427f0050c03bbdc0743eba_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Windupdt\\winupdate.exe"	notepad.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3544 set thread context of 3828	3544	433de5f365427f0050c03bbdc0743eba_JaffaCakes118.exe	88

UPX packed file 8 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3544-0-0x0000000013140000-0x000000001322D000-memory.dmp	upx
behavioral2/files/0x0008000000023c62-6.dat	upx
behavioral2/memory/3828-7-0x0000000013140000-0x000000001322D000-memory.dmp	upx
behavioral2/memory/3828-10-0x0000000013140000-0x000000001322D000-memory.dmp	upx
behavioral2/memory/3828-9-0x0000000013140000-0x000000001322D000-memory.dmp	upx
behavioral2/memory/3544-12-0x0000000013140000-0x000000001322D000-memory.dmp	upx
behavioral2/memory/3828-15-0x0000000013140000-0x000000001322D000-memory.dmp	upx
behavioral2/memory/3828-14-0x0000000013140000-0x000000001322D000-memory.dmp	upx

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	notepad.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	explorer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	433de5f365427f0050c03bbdc0743eba_JaffaCakes118.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\VendorIdentifier	433de5f365427f0050c03bbdc0743eba_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	433de5f365427f0050c03bbdc0743eba_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	433de5f365427f0050c03bbdc0743eba_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	433de5f365427f0050c03bbdc0743eba_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	433de5f365427f0050c03bbdc0743eba_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	explorer.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	3544	433de5f365427f0050c03bbdc0743eba_JaffaCakes118.exe
Token: SeSecurityPrivilege	3544	433de5f365427f0050c03bbdc0743eba_JaffaCakes118.exe
Token: SeTakeOwnershipPrivilege	3544	433de5f365427f0050c03bbdc0743eba_JaffaCakes118.exe
Token: SeLoadDriverPrivilege	3544	433de5f365427f0050c03bbdc0743eba_JaffaCakes118.exe
Token: SeSystemProfilePrivilege	3544	433de5f365427f0050c03bbdc0743eba_JaffaCakes118.exe
Token: SeSystemtimePrivilege	3544	433de5f365427f0050c03bbdc0743eba_JaffaCakes118.exe
Token: SeProfSingleProcessPrivilege	3544	433de5f365427f0050c03bbdc0743eba_JaffaCakes118.exe
Token: SeIncBasePriorityPrivilege	3544	433de5f365427f0050c03bbdc0743eba_JaffaCakes118.exe
Token: SeCreatePagefilePrivilege	3544	433de5f365427f0050c03bbdc0743eba_JaffaCakes118.exe
Token: SeBackupPrivilege	3544	433de5f365427f0050c03bbdc0743eba_JaffaCakes118.exe
Token: SeRestorePrivilege	3544	433de5f365427f0050c03bbdc0743eba_JaffaCakes118.exe
Token: SeShutdownPrivilege	3544	433de5f365427f0050c03bbdc0743eba_JaffaCakes118.exe
Token: SeDebugPrivilege	3544	433de5f365427f0050c03bbdc0743eba_JaffaCakes118.exe
Token: SeSystemEnvironmentPrivilege	3544	433de5f365427f0050c03bbdc0743eba_JaffaCakes118.exe
Token: SeChangeNotifyPrivilege	3544	433de5f365427f0050c03bbdc0743eba_JaffaCakes118.exe
Token: SeRemoteShutdownPrivilege	3544	433de5f365427f0050c03bbdc0743eba_JaffaCakes118.exe
Token: SeUndockPrivilege	3544	433de5f365427f0050c03bbdc0743eba_JaffaCakes118.exe
Token: SeManageVolumePrivilege	3544	433de5f365427f0050c03bbdc0743eba_JaffaCakes118.exe
Token: SeImpersonatePrivilege	3544	433de5f365427f0050c03bbdc0743eba_JaffaCakes118.exe
Token: SeCreateGlobalPrivilege	3544	433de5f365427f0050c03bbdc0743eba_JaffaCakes118.exe
Token: 33	3544	433de5f365427f0050c03bbdc0743eba_JaffaCakes118.exe
Token: 34	3544	433de5f365427f0050c03bbdc0743eba_JaffaCakes118.exe
Token: 35	3544	433de5f365427f0050c03bbdc0743eba_JaffaCakes118.exe
Token: 36	3544	433de5f365427f0050c03bbdc0743eba_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	3828	explorer.exe
Token: SeSecurityPrivilege	3828	explorer.exe
Token: SeTakeOwnershipPrivilege	3828	explorer.exe
Token: SeLoadDriverPrivilege	3828	explorer.exe
Token: SeSystemProfilePrivilege	3828	explorer.exe
Token: SeSystemtimePrivilege	3828	explorer.exe
Token: SeProfSingleProcessPrivilege	3828	explorer.exe
Token: SeIncBasePriorityPrivilege	3828	explorer.exe
Token: SeCreatePagefilePrivilege	3828	explorer.exe
Token: SeBackupPrivilege	3828	explorer.exe
Token: SeRestorePrivilege	3828	explorer.exe
Token: SeShutdownPrivilege	3828	explorer.exe
Token: SeDebugPrivilege	3828	explorer.exe
Token: SeSystemEnvironmentPrivilege	3828	explorer.exe
Token: SeChangeNotifyPrivilege	3828	explorer.exe
Token: SeRemoteShutdownPrivilege	3828	explorer.exe
Token: SeUndockPrivilege	3828	explorer.exe
Token: SeManageVolumePrivilege	3828	explorer.exe
Token: SeImpersonatePrivilege	3828	explorer.exe
Token: SeCreateGlobalPrivilege	3828	explorer.exe
Token: 33	3828	explorer.exe
Token: 34	3828	explorer.exe
Token: 35	3828	explorer.exe
Token: 36	3828	explorer.exe

Suspicious use of WriteProcessMemory 28 IoCs

description	pid	Process	procid_target
PID 3544 wrote to memory of 2996	3544	433de5f365427f0050c03bbdc0743eba_JaffaCakes118.exe	85
PID 3544 wrote to memory of 2996	3544	433de5f365427f0050c03bbdc0743eba_JaffaCakes118.exe	85
PID 3544 wrote to memory of 2996	3544	433de5f365427f0050c03bbdc0743eba_JaffaCakes118.exe	85
PID 3544 wrote to memory of 2996	3544	433de5f365427f0050c03bbdc0743eba_JaffaCakes118.exe	85
PID 3544 wrote to memory of 2996	3544	433de5f365427f0050c03bbdc0743eba_JaffaCakes118.exe	85
PID 3544 wrote to memory of 2996	3544	433de5f365427f0050c03bbdc0743eba_JaffaCakes118.exe	85
PID 3544 wrote to memory of 2996	3544	433de5f365427f0050c03bbdc0743eba_JaffaCakes118.exe	85
PID 3544 wrote to memory of 2996	3544	433de5f365427f0050c03bbdc0743eba_JaffaCakes118.exe	85
PID 3544 wrote to memory of 2996	3544	433de5f365427f0050c03bbdc0743eba_JaffaCakes118.exe	85
PID 3544 wrote to memory of 2996	3544	433de5f365427f0050c03bbdc0743eba_JaffaCakes118.exe	85
PID 3544 wrote to memory of 2996	3544	433de5f365427f0050c03bbdc0743eba_JaffaCakes118.exe	85
PID 3544 wrote to memory of 2996	3544	433de5f365427f0050c03bbdc0743eba_JaffaCakes118.exe	85
PID 3544 wrote to memory of 2996	3544	433de5f365427f0050c03bbdc0743eba_JaffaCakes118.exe	85
PID 3544 wrote to memory of 2996	3544	433de5f365427f0050c03bbdc0743eba_JaffaCakes118.exe	85
PID 3544 wrote to memory of 2996	3544	433de5f365427f0050c03bbdc0743eba_JaffaCakes118.exe	85
PID 3544 wrote to memory of 2996	3544	433de5f365427f0050c03bbdc0743eba_JaffaCakes118.exe	85
PID 3544 wrote to memory of 2996	3544	433de5f365427f0050c03bbdc0743eba_JaffaCakes118.exe	85
PID 3544 wrote to memory of 2996	3544	433de5f365427f0050c03bbdc0743eba_JaffaCakes118.exe	85
PID 3544 wrote to memory of 2996	3544	433de5f365427f0050c03bbdc0743eba_JaffaCakes118.exe	85
PID 3544 wrote to memory of 2996	3544	433de5f365427f0050c03bbdc0743eba_JaffaCakes118.exe	85
PID 3544 wrote to memory of 2996	3544	433de5f365427f0050c03bbdc0743eba_JaffaCakes118.exe	85
PID 3544 wrote to memory of 2996	3544	433de5f365427f0050c03bbdc0743eba_JaffaCakes118.exe	85
PID 3544 wrote to memory of 2996	3544	433de5f365427f0050c03bbdc0743eba_JaffaCakes118.exe	85
PID 3544 wrote to memory of 3828	3544	433de5f365427f0050c03bbdc0743eba_JaffaCakes118.exe	88
PID 3544 wrote to memory of 3828	3544	433de5f365427f0050c03bbdc0743eba_JaffaCakes118.exe	88
PID 3544 wrote to memory of 3828	3544	433de5f365427f0050c03bbdc0743eba_JaffaCakes118.exe	88
PID 3544 wrote to memory of 3828	3544	433de5f365427f0050c03bbdc0743eba_JaffaCakes118.exe	88
PID 3544 wrote to memory of 3828	3544	433de5f365427f0050c03bbdc0743eba_JaffaCakes118.exe	88

C:\Users\Admin\AppData\Local\Temp\433de5f365427f0050c03bbdc0743eba_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\433de5f365427f0050c03bbdc0743eba_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:3544
- C:\Windows\SysWOW64\notepad.exe
  notepad
  2⤵
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  PID:2996
- 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:3828

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
340KB

MD5
433de5f365427f0050c03bbdc0743eba

SHA1
125d358f3e8b0dac7d34342949a317e78518ac52

SHA256
314eca135f6a094d3e919a2242db81822caae45651b5d452caba587a8be4b5bf

SHA512
480aeff5b5794bbdbd66af87e5d760bedbb16869ec6bd3e6ff5111e201d43cc7619ad1e83d2c95598c59f7d6320cf9b683be51cf11ec87266b6725f5f754a2d8

Download Submit
memory/2996-3-0x0000000000E40000-0x0000000000E41000-memory.dmp

Filesize
4KB

Download
memory/3544-0-0x0000000013140000-0x000000001322D000-memory.dmp

Filesize
948KB

Download
memory/3544-1-0x0000000002340000-0x0000000002341000-memory.dmp

Filesize
4KB

Download
memory/3544-12-0x0000000013140000-0x000000001322D000-memory.dmp

Filesize
948KB

Download
memory/3828-7-0x0000000013140000-0x000000001322D000-memory.dmp

Filesize
948KB

Download
memory/3828-10-0x0000000013140000-0x000000001322D000-memory.dmp

Filesize
948KB

Download
memory/3828-9-0x0000000013140000-0x000000001322D000-memory.dmp

Filesize
948KB

Download
memory/3828-13-0x0000000000A90000-0x0000000000EC3000-memory.dmp

Filesize
4.2MB

Download
memory/3828-15-0x0000000013140000-0x000000001322D000-memory.dmp

Filesize
948KB

Download
memory/3828-14-0x0000000013140000-0x000000001322D000-memory.dmp

Filesize
948KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads