darkcomet | c3e2d48e11b7ef5a7c8900321cc0c56c2b95b392c31bc9ae09d5e1a81e6ee0d9

Analysis

max time kernel
150s
max time network
122s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
07/10/2024, 04:07

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General

Target

1b6537ae64500c77c2b93b735f43fb1d_JaffaCakes118.exe
Size

242KB
MD5

1b6537ae64500c77c2b93b735f43fb1d
SHA1

4a003a845296ff0bdee4c8b912f589423e8c0557
SHA256

c3e2d48e11b7ef5a7c8900321cc0c56c2b95b392c31bc9ae09d5e1a81e6ee0d9
SHA512

5ba630092fc86088b40cab3df710565595821f5d9cba39673d0efad2994d1c543471b73630d36db06979c44ca58555ad4fcd1dfa071bc8ec3935ed69f75454f8
SSDEEP

6144:11iJcYtR1HsvpSHY7KoSrfTNBuzZZcA1wnOLrMM4V:1kHcpSHY7VSrfT2/czO3H

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:\\Windows\\system32\\Windupdt\\winupdate.exe"	1b6537ae64500c77c2b93b735f43fb1d_JaffaCakes118.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system32\drivers\etc\hosts	1b6537ae64500c77c2b93b735f43fb1d_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	explorer.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	1b6537ae64500c77c2b93b735f43fb1d_JaffaCakes118.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-1-5-21-3063565911-2056067323-3330884624-1000\Software\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Windows\\system32\\Windupdt\\winupdate.exe"	1b6537ae64500c77c2b93b735f43fb1d_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3063565911-2056067323-3330884624-1000\Software\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Windows\\system32\\Windupdt\\winupdate.exe"	notepad.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\Windupdt\winupdate.exe	notepad.exe
File created	C:\Windows\SysWOW64\Windupdt\winupdate.exe	1b6537ae64500c77c2b93b735f43fb1d_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\Windupdt\winupdate.exe	1b6537ae64500c77c2b93b735f43fb1d_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\Windupdt\	1b6537ae64500c77c2b93b735f43fb1d_JaffaCakes118.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2352 set thread context of 112	2352	1b6537ae64500c77c2b93b735f43fb1d_JaffaCakes118.exe	31

UPX packed file 12 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2352-0-0x0000000013140000-0x00000000131FC000-memory.dmp	upx
behavioral1/memory/112-33-0x0000000013140000-0x00000000131FC000-memory.dmp	upx
behavioral1/memory/112-34-0x0000000013140000-0x00000000131FC000-memory.dmp	upx
behavioral1/memory/2352-37-0x0000000013140000-0x00000000131FC000-memory.dmp	upx
behavioral1/memory/112-36-0x0000000013140000-0x00000000131FC000-memory.dmp	upx
behavioral1/memory/112-39-0x0000000013140000-0x00000000131FC000-memory.dmp	upx
behavioral1/memory/112-38-0x0000000013140000-0x00000000131FC000-memory.dmp	upx
behavioral1/memory/112-41-0x0000000013140000-0x00000000131FC000-memory.dmp	upx
behavioral1/memory/112-42-0x0000000013140000-0x00000000131FC000-memory.dmp	upx
behavioral1/memory/112-44-0x0000000013140000-0x00000000131FC000-memory.dmp	upx
behavioral1/memory/112-43-0x0000000013140000-0x00000000131FC000-memory.dmp	upx
behavioral1/memory/112-45-0x0000000013140000-0x00000000131FC000-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	1b6537ae64500c77c2b93b735f43fb1d_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\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	1b6537ae64500c77c2b93b735f43fb1d_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	1b6537ae64500c77c2b93b735f43fb1d_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	1b6537ae64500c77c2b93b735f43fb1d_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	1b6537ae64500c77c2b93b735f43fb1d_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

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	1b6537ae64500c77c2b93b735f43fb1d_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	explorer.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
112	explorer.exe

Suspicious use of AdjustPrivilegeToken 46 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	2352	1b6537ae64500c77c2b93b735f43fb1d_JaffaCakes118.exe
Token: SeSecurityPrivilege	2352	1b6537ae64500c77c2b93b735f43fb1d_JaffaCakes118.exe
Token: SeTakeOwnershipPrivilege	2352	1b6537ae64500c77c2b93b735f43fb1d_JaffaCakes118.exe
Token: SeLoadDriverPrivilege	2352	1b6537ae64500c77c2b93b735f43fb1d_JaffaCakes118.exe
Token: SeSystemProfilePrivilege	2352	1b6537ae64500c77c2b93b735f43fb1d_JaffaCakes118.exe
Token: SeSystemtimePrivilege	2352	1b6537ae64500c77c2b93b735f43fb1d_JaffaCakes118.exe
Token: SeProfSingleProcessPrivilege	2352	1b6537ae64500c77c2b93b735f43fb1d_JaffaCakes118.exe
Token: SeIncBasePriorityPrivilege	2352	1b6537ae64500c77c2b93b735f43fb1d_JaffaCakes118.exe
Token: SeCreatePagefilePrivilege	2352	1b6537ae64500c77c2b93b735f43fb1d_JaffaCakes118.exe
Token: SeBackupPrivilege	2352	1b6537ae64500c77c2b93b735f43fb1d_JaffaCakes118.exe
Token: SeRestorePrivilege	2352	1b6537ae64500c77c2b93b735f43fb1d_JaffaCakes118.exe
Token: SeShutdownPrivilege	2352	1b6537ae64500c77c2b93b735f43fb1d_JaffaCakes118.exe
Token: SeDebugPrivilege	2352	1b6537ae64500c77c2b93b735f43fb1d_JaffaCakes118.exe
Token: SeSystemEnvironmentPrivilege	2352	1b6537ae64500c77c2b93b735f43fb1d_JaffaCakes118.exe
Token: SeChangeNotifyPrivilege	2352	1b6537ae64500c77c2b93b735f43fb1d_JaffaCakes118.exe
Token: SeRemoteShutdownPrivilege	2352	1b6537ae64500c77c2b93b735f43fb1d_JaffaCakes118.exe
Token: SeUndockPrivilege	2352	1b6537ae64500c77c2b93b735f43fb1d_JaffaCakes118.exe
Token: SeManageVolumePrivilege	2352	1b6537ae64500c77c2b93b735f43fb1d_JaffaCakes118.exe
Token: SeImpersonatePrivilege	2352	1b6537ae64500c77c2b93b735f43fb1d_JaffaCakes118.exe
Token: SeCreateGlobalPrivilege	2352	1b6537ae64500c77c2b93b735f43fb1d_JaffaCakes118.exe
Token: 33	2352	1b6537ae64500c77c2b93b735f43fb1d_JaffaCakes118.exe
Token: 34	2352	1b6537ae64500c77c2b93b735f43fb1d_JaffaCakes118.exe
Token: 35	2352	1b6537ae64500c77c2b93b735f43fb1d_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	112	explorer.exe
Token: SeSecurityPrivilege	112	explorer.exe
Token: SeTakeOwnershipPrivilege	112	explorer.exe
Token: SeLoadDriverPrivilege	112	explorer.exe
Token: SeSystemProfilePrivilege	112	explorer.exe
Token: SeSystemtimePrivilege	112	explorer.exe
Token: SeProfSingleProcessPrivilege	112	explorer.exe
Token: SeIncBasePriorityPrivilege	112	explorer.exe
Token: SeCreatePagefilePrivilege	112	explorer.exe
Token: SeBackupPrivilege	112	explorer.exe
Token: SeRestorePrivilege	112	explorer.exe
Token: SeShutdownPrivilege	112	explorer.exe
Token: SeDebugPrivilege	112	explorer.exe
Token: SeSystemEnvironmentPrivilege	112	explorer.exe
Token: SeChangeNotifyPrivilege	112	explorer.exe
Token: SeRemoteShutdownPrivilege	112	explorer.exe
Token: SeUndockPrivilege	112	explorer.exe
Token: SeManageVolumePrivilege	112	explorer.exe
Token: SeImpersonatePrivilege	112	explorer.exe
Token: SeCreateGlobalPrivilege	112	explorer.exe
Token: 33	112	explorer.exe
Token: 34	112	explorer.exe
Token: 35	112	explorer.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
112	explorer.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2352 wrote to memory of 2084	2352	1b6537ae64500c77c2b93b735f43fb1d_JaffaCakes118.exe	30
PID 2352 wrote to memory of 2084	2352	1b6537ae64500c77c2b93b735f43fb1d_JaffaCakes118.exe	30
PID 2352 wrote to memory of 2084	2352	1b6537ae64500c77c2b93b735f43fb1d_JaffaCakes118.exe	30
PID 2352 wrote to memory of 2084	2352	1b6537ae64500c77c2b93b735f43fb1d_JaffaCakes118.exe	30
PID 2352 wrote to memory of 2084	2352	1b6537ae64500c77c2b93b735f43fb1d_JaffaCakes118.exe	30
PID 2352 wrote to memory of 2084	2352	1b6537ae64500c77c2b93b735f43fb1d_JaffaCakes118.exe	30
PID 2352 wrote to memory of 2084	2352	1b6537ae64500c77c2b93b735f43fb1d_JaffaCakes118.exe	30
PID 2352 wrote to memory of 2084	2352	1b6537ae64500c77c2b93b735f43fb1d_JaffaCakes118.exe	30
PID 2352 wrote to memory of 2084	2352	1b6537ae64500c77c2b93b735f43fb1d_JaffaCakes118.exe	30
PID 2352 wrote to memory of 2084	2352	1b6537ae64500c77c2b93b735f43fb1d_JaffaCakes118.exe	30
PID 2352 wrote to memory of 2084	2352	1b6537ae64500c77c2b93b735f43fb1d_JaffaCakes118.exe	30
PID 2352 wrote to memory of 2084	2352	1b6537ae64500c77c2b93b735f43fb1d_JaffaCakes118.exe	30
PID 2352 wrote to memory of 2084	2352	1b6537ae64500c77c2b93b735f43fb1d_JaffaCakes118.exe	30
PID 2352 wrote to memory of 2084	2352	1b6537ae64500c77c2b93b735f43fb1d_JaffaCakes118.exe	30
PID 2352 wrote to memory of 2084	2352	1b6537ae64500c77c2b93b735f43fb1d_JaffaCakes118.exe	30
PID 2352 wrote to memory of 2084	2352	1b6537ae64500c77c2b93b735f43fb1d_JaffaCakes118.exe	30
PID 2352 wrote to memory of 2084	2352	1b6537ae64500c77c2b93b735f43fb1d_JaffaCakes118.exe	30
PID 2352 wrote to memory of 2084	2352	1b6537ae64500c77c2b93b735f43fb1d_JaffaCakes118.exe	30
PID 2352 wrote to memory of 2084	2352	1b6537ae64500c77c2b93b735f43fb1d_JaffaCakes118.exe	30
PID 2352 wrote to memory of 2084	2352	1b6537ae64500c77c2b93b735f43fb1d_JaffaCakes118.exe	30
PID 2352 wrote to memory of 2084	2352	1b6537ae64500c77c2b93b735f43fb1d_JaffaCakes118.exe	30
PID 2352 wrote to memory of 2084	2352	1b6537ae64500c77c2b93b735f43fb1d_JaffaCakes118.exe	30
PID 2352 wrote to memory of 2084	2352	1b6537ae64500c77c2b93b735f43fb1d_JaffaCakes118.exe	30
PID 2352 wrote to memory of 2084	2352	1b6537ae64500c77c2b93b735f43fb1d_JaffaCakes118.exe	30
PID 2352 wrote to memory of 112	2352	1b6537ae64500c77c2b93b735f43fb1d_JaffaCakes118.exe	31
PID 2352 wrote to memory of 112	2352	1b6537ae64500c77c2b93b735f43fb1d_JaffaCakes118.exe	31
PID 2352 wrote to memory of 112	2352	1b6537ae64500c77c2b93b735f43fb1d_JaffaCakes118.exe	31
PID 2352 wrote to memory of 112	2352	1b6537ae64500c77c2b93b735f43fb1d_JaffaCakes118.exe	31
PID 2352 wrote to memory of 112	2352	1b6537ae64500c77c2b93b735f43fb1d_JaffaCakes118.exe	31
PID 2352 wrote to memory of 112	2352	1b6537ae64500c77c2b93b735f43fb1d_JaffaCakes118.exe	31

C:\Users\Admin\AppData\Local\Temp\1b6537ae64500c77c2b93b735f43fb1d_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\1b6537ae64500c77c2b93b735f43fb1d_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- Drops file in Drivers directory
- Checks BIOS information in registry
- Adds Run key to start application
- Drops file in System32 directory
- 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:2352
- C:\Windows\SysWOW64\notepad.exe
  notepad
  2⤵
  - Adds Run key to start application
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  PID:2084
- 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 behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:112

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

Replay Monitor

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Downloads

memory/112-38-0x0000000013140000-0x00000000131FC000-memory.dmp

Filesize
752KB

Download
memory/112-40-0x0000000000150000-0x0000000000151000-memory.dmp

Filesize
4KB

Download
memory/112-46-0x0000000000150000-0x0000000000151000-memory.dmp

Filesize
4KB

Download
memory/112-36-0x0000000013140000-0x00000000131FC000-memory.dmp

Filesize
752KB

Download
memory/112-29-0x0000000013140000-0x00000000131FC000-memory.dmp

Filesize
752KB

Download
memory/112-33-0x0000000013140000-0x00000000131FC000-memory.dmp

Filesize
752KB

Download
memory/112-31-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/112-34-0x0000000013140000-0x00000000131FC000-memory.dmp

Filesize
752KB

Download
memory/112-45-0x0000000013140000-0x00000000131FC000-memory.dmp

Filesize
752KB

Download
memory/112-43-0x0000000013140000-0x00000000131FC000-memory.dmp

Filesize
752KB

Download
memory/112-44-0x0000000013140000-0x00000000131FC000-memory.dmp

Filesize
752KB

Download
memory/112-39-0x0000000013140000-0x00000000131FC000-memory.dmp

Filesize
752KB

Download
memory/112-42-0x0000000013140000-0x00000000131FC000-memory.dmp

Filesize
752KB

Download
memory/112-41-0x0000000013140000-0x00000000131FC000-memory.dmp

Filesize
752KB

Download
memory/2084-26-0x0000000000190000-0x0000000000191000-memory.dmp

Filesize
4KB

Download
memory/2084-3-0x0000000000080000-0x0000000000081000-memory.dmp

Filesize
4KB

Download
memory/2352-0-0x0000000013140000-0x00000000131FC000-memory.dmp

Filesize
752KB

Download
memory/2352-37-0x0000000013140000-0x00000000131FC000-memory.dmp

Filesize
752KB

Download
memory/2352-1-0x0000000000280000-0x0000000000281000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads