darkcomet | d8e1d628d41a7ec46b1fd2c68be1ae3eb8a43ea63a6820ea28bb8b746ec8ff6d

Analysis

max time kernel
150s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
02-11-2024 21:46

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General

Target

87f02f971e6c0925f36b48912eee5df4_JaffaCakes118.exe
Size

273KB
MD5

87f02f971e6c0925f36b48912eee5df4
SHA1

30be3fb266531e04d22d92cc4034a0b0380bfaeb
SHA256

d8e1d628d41a7ec46b1fd2c68be1ae3eb8a43ea63a6820ea28bb8b746ec8ff6d
SHA512

dc92861f8d69b4679987c0778b316841ffbbcafc90de434d1cebb6f2b8d085e16bb0a696bed60ee5defa75dbf890aa1782c8bb296727b2d7c50ac21669127993
SSDEEP

6144:ahfANY9etDofluVdSCfVicJPm6l+CSRg3qvofm2evUEeyMb:qIrHTTNm4+3Rg3BmBvSb

Score

10^/10

darkcomet guest16 discovery persistence rat trojan upx

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

mile404.no-ip.info:1604

Mutex

DC_MUTEX-U6BQSZ0

Attributes

InstallPath
System\taskhost.exe
gencode
MoHQLCL0MMAD
install
true
offline_keylogger
true
password
Funnel5266
persistence
false
reg_key
taskhost

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\\AppData\\Local\\Temp\\System\\taskhost.exe"	87f02f971e6c0925f36b48912eee5df4_JaffaCakes118.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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	87f02f971e6c0925f36b48912eee5df4_JaffaCakes118.exe

Executes dropped EXE 2 IoCs

pid	Process
556	taskhost.exe
4592	taskhost.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-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\taskhost = "C:\\Users\\Admin\\AppData\\Local\\Temp\\System\\taskhost.exe"	87f02f971e6c0925f36b48912eee5df4_JaffaCakes118.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2204 set thread context of 1740	2204	87f02f971e6c0925f36b48912eee5df4_JaffaCakes118.exe	87
PID 556 set thread context of 4592	556	taskhost.exe	90

UPX packed file 10 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1740-5-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/1740-8-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/1740-10-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/1740-9-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/1740-3-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/4592-88-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/4592-95-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/4592-94-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/4592-92-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/4592-91-0x0000000000400000-0x00000000004B5000-memory.dmp	upx

Drops file in Windows directory 4 IoCs

description	ioc	Process
File created	C:\Windows\Microsoft.NET\Framework\v2.0.50727\config\enterprisesec.config.cch.new	taskhost.exe
File created	C:\Windows\Microsoft.NET\Framework\v2.0.50727\config\security.config.cch.new	87f02f971e6c0925f36b48912eee5df4_JaffaCakes118.exe
File created	C:\Windows\Microsoft.NET\Framework\v2.0.50727\config\enterprisesec.config.cch.new	87f02f971e6c0925f36b48912eee5df4_JaffaCakes118.exe
File created	C:\Windows\Microsoft.NET\Framework\v2.0.50727\config\security.config.cch.new	taskhost.exe

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	87f02f971e6c0925f36b48912eee5df4_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	87f02f971e6c0925f36b48912eee5df4_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	taskhost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	taskhost.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	87f02f971e6c0925f36b48912eee5df4_JaffaCakes118.exe

Suspicious use of AdjustPrivilegeToken 50 IoCs

description	pid	Process
Token: SeDebugPrivilege	2204	87f02f971e6c0925f36b48912eee5df4_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	1740	87f02f971e6c0925f36b48912eee5df4_JaffaCakes118.exe
Token: SeSecurityPrivilege	1740	87f02f971e6c0925f36b48912eee5df4_JaffaCakes118.exe
Token: SeTakeOwnershipPrivilege	1740	87f02f971e6c0925f36b48912eee5df4_JaffaCakes118.exe
Token: SeLoadDriverPrivilege	1740	87f02f971e6c0925f36b48912eee5df4_JaffaCakes118.exe
Token: SeSystemProfilePrivilege	1740	87f02f971e6c0925f36b48912eee5df4_JaffaCakes118.exe
Token: SeSystemtimePrivilege	1740	87f02f971e6c0925f36b48912eee5df4_JaffaCakes118.exe
Token: SeProfSingleProcessPrivilege	1740	87f02f971e6c0925f36b48912eee5df4_JaffaCakes118.exe
Token: SeIncBasePriorityPrivilege	1740	87f02f971e6c0925f36b48912eee5df4_JaffaCakes118.exe
Token: SeCreatePagefilePrivilege	1740	87f02f971e6c0925f36b48912eee5df4_JaffaCakes118.exe
Token: SeBackupPrivilege	1740	87f02f971e6c0925f36b48912eee5df4_JaffaCakes118.exe
Token: SeRestorePrivilege	1740	87f02f971e6c0925f36b48912eee5df4_JaffaCakes118.exe
Token: SeShutdownPrivilege	1740	87f02f971e6c0925f36b48912eee5df4_JaffaCakes118.exe
Token: SeDebugPrivilege	1740	87f02f971e6c0925f36b48912eee5df4_JaffaCakes118.exe
Token: SeSystemEnvironmentPrivilege	1740	87f02f971e6c0925f36b48912eee5df4_JaffaCakes118.exe
Token: SeChangeNotifyPrivilege	1740	87f02f971e6c0925f36b48912eee5df4_JaffaCakes118.exe
Token: SeRemoteShutdownPrivilege	1740	87f02f971e6c0925f36b48912eee5df4_JaffaCakes118.exe
Token: SeUndockPrivilege	1740	87f02f971e6c0925f36b48912eee5df4_JaffaCakes118.exe
Token: SeManageVolumePrivilege	1740	87f02f971e6c0925f36b48912eee5df4_JaffaCakes118.exe
Token: SeImpersonatePrivilege	1740	87f02f971e6c0925f36b48912eee5df4_JaffaCakes118.exe
Token: SeCreateGlobalPrivilege	1740	87f02f971e6c0925f36b48912eee5df4_JaffaCakes118.exe
Token: 33	1740	87f02f971e6c0925f36b48912eee5df4_JaffaCakes118.exe
Token: 34	1740	87f02f971e6c0925f36b48912eee5df4_JaffaCakes118.exe
Token: 35	1740	87f02f971e6c0925f36b48912eee5df4_JaffaCakes118.exe
Token: 36	1740	87f02f971e6c0925f36b48912eee5df4_JaffaCakes118.exe
Token: SeDebugPrivilege	556	taskhost.exe
Token: SeIncreaseQuotaPrivilege	4592	taskhost.exe
Token: SeSecurityPrivilege	4592	taskhost.exe
Token: SeTakeOwnershipPrivilege	4592	taskhost.exe
Token: SeLoadDriverPrivilege	4592	taskhost.exe
Token: SeSystemProfilePrivilege	4592	taskhost.exe
Token: SeSystemtimePrivilege	4592	taskhost.exe
Token: SeProfSingleProcessPrivilege	4592	taskhost.exe
Token: SeIncBasePriorityPrivilege	4592	taskhost.exe
Token: SeCreatePagefilePrivilege	4592	taskhost.exe
Token: SeBackupPrivilege	4592	taskhost.exe
Token: SeRestorePrivilege	4592	taskhost.exe
Token: SeShutdownPrivilege	4592	taskhost.exe
Token: SeDebugPrivilege	4592	taskhost.exe
Token: SeSystemEnvironmentPrivilege	4592	taskhost.exe
Token: SeChangeNotifyPrivilege	4592	taskhost.exe
Token: SeRemoteShutdownPrivilege	4592	taskhost.exe
Token: SeUndockPrivilege	4592	taskhost.exe
Token: SeManageVolumePrivilege	4592	taskhost.exe
Token: SeImpersonatePrivilege	4592	taskhost.exe
Token: SeCreateGlobalPrivilege	4592	taskhost.exe
Token: 33	4592	taskhost.exe
Token: 34	4592	taskhost.exe
Token: 35	4592	taskhost.exe
Token: 36	4592	taskhost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4592	taskhost.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 2204 wrote to memory of 1740	2204	87f02f971e6c0925f36b48912eee5df4_JaffaCakes118.exe	87
PID 2204 wrote to memory of 1740	2204	87f02f971e6c0925f36b48912eee5df4_JaffaCakes118.exe	87
PID 2204 wrote to memory of 1740	2204	87f02f971e6c0925f36b48912eee5df4_JaffaCakes118.exe	87
PID 2204 wrote to memory of 1740	2204	87f02f971e6c0925f36b48912eee5df4_JaffaCakes118.exe	87
PID 2204 wrote to memory of 1740	2204	87f02f971e6c0925f36b48912eee5df4_JaffaCakes118.exe	87
PID 2204 wrote to memory of 1740	2204	87f02f971e6c0925f36b48912eee5df4_JaffaCakes118.exe	87
PID 2204 wrote to memory of 1740	2204	87f02f971e6c0925f36b48912eee5df4_JaffaCakes118.exe	87
PID 2204 wrote to memory of 1740	2204	87f02f971e6c0925f36b48912eee5df4_JaffaCakes118.exe	87
PID 1740 wrote to memory of 556	1740	87f02f971e6c0925f36b48912eee5df4_JaffaCakes118.exe	89
PID 1740 wrote to memory of 556	1740	87f02f971e6c0925f36b48912eee5df4_JaffaCakes118.exe	89
PID 1740 wrote to memory of 556	1740	87f02f971e6c0925f36b48912eee5df4_JaffaCakes118.exe	89
PID 556 wrote to memory of 4592	556	taskhost.exe	90
PID 556 wrote to memory of 4592	556	taskhost.exe	90
PID 556 wrote to memory of 4592	556	taskhost.exe	90
PID 556 wrote to memory of 4592	556	taskhost.exe	90
PID 556 wrote to memory of 4592	556	taskhost.exe	90
PID 556 wrote to memory of 4592	556	taskhost.exe	90
PID 556 wrote to memory of 4592	556	taskhost.exe	90
PID 556 wrote to memory of 4592	556	taskhost.exe	90

C:\Users\Admin\AppData\Local\Temp\87f02f971e6c0925f36b48912eee5df4_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\87f02f971e6c0925f36b48912eee5df4_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2204
- C:\Users\Admin\AppData\Local\Temp\87f02f971e6c0925f36b48912eee5df4_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\87f02f971e6c0925f36b48912eee5df4_JaffaCakes118.exe
  2⤵
  - Modifies WinLogon for persistence
  - Checks computer location settings
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1740
- - C:\Users\Admin\AppData\Local\Temp\System\taskhost.exe
    "C:\Users\Admin\AppData\Local\Temp\System\taskhost.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Drops file in Windows directory
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:556
  - - C:\Users\Admin\AppData\Local\Temp\System\taskhost.exe
      C:\Users\Admin\AppData\Local\Temp\System\taskhost.exe
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of SetWindowsHookEx
      PID:4592

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:\Users\Admin\AppData\Local\Temp\System\taskhost.exe

Filesize
273KB

MD5
87f02f971e6c0925f36b48912eee5df4

SHA1
30be3fb266531e04d22d92cc4034a0b0380bfaeb

SHA256
d8e1d628d41a7ec46b1fd2c68be1ae3eb8a43ea63a6820ea28bb8b746ec8ff6d

SHA512
dc92861f8d69b4679987c0778b316841ffbbcafc90de434d1cebb6f2b8d085e16bb0a696bed60ee5defa75dbf890aa1782c8bb296727b2d7c50ac21669127993

Download Submit
C:\Windows\Microsoft.NET\Framework\v2.0.50727\config\enterprisesec.config.cch

Filesize
478B

MD5
6abd675cbdee43c8d7e5dc1bf5207f9f

SHA1
9d4c73f252a819725a2315b5d3048d4c815d1769

SHA256
411f28cbd73a4d0020da4f00c7228a4e01ec889af7d715f4aab5f63ba0a522d2

SHA512
1f710d401b884b0a67306d42d8a28bfca2658bcf836ef7d710895ad59d10b50daf29e30dc9ab7369875ef1c30acf3299ba3e010ffa52a6210b6dfb7718917a58

Download Submit
memory/556-93-0x0000000073CF0000-0x00000000742A1000-memory.dmp

Filesize
5.7MB

Download
memory/556-77-0x0000000073CF2000-0x0000000073CF3000-memory.dmp

Filesize
4KB

Download
memory/556-79-0x0000000073CF0000-0x00000000742A1000-memory.dmp

Filesize
5.7MB

Download
memory/556-78-0x0000000073CF0000-0x00000000742A1000-memory.dmp

Filesize
5.7MB

Download
memory/1740-13-0x0000000001630000-0x0000000001631000-memory.dmp

Filesize
4KB

Download
memory/1740-8-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/1740-9-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/1740-3-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/1740-10-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/1740-5-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2204-16-0x00000000755A0000-0x0000000075B51000-memory.dmp

Filesize
5.7MB

Download
memory/2204-0-0x00000000755A2000-0x00000000755A3000-memory.dmp

Filesize
4KB

Download
memory/2204-2-0x00000000755A0000-0x0000000075B51000-memory.dmp

Filesize
5.7MB

Download
memory/2204-1-0x00000000755A0000-0x0000000075B51000-memory.dmp

Filesize
5.7MB

Download
memory/4592-88-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/4592-95-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/4592-94-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/4592-92-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/4592-91-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads