darkcomet | 99f3cb3501eae1a22f94ada32f602a5f26ebe99f2ece30fad519fefaff9a5ba6

Analysis

max time kernel
148s
max time network
151s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
21/03/2025, 11:28

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General

Target

JaffaCakes118_83073e64b798c4629d7cd8acf906c5d3.exe
Size

1.0MB
MD5

83073e64b798c4629d7cd8acf906c5d3
SHA1

d7a23fb969406082bb9bc1e9189ddcc64393b1d7
SHA256

99f3cb3501eae1a22f94ada32f602a5f26ebe99f2ece30fad519fefaff9a5ba6
SHA512

daf9c705711cbb7387291c9f7f2ca9a76625d52b1fe331bd8653fbaff1094e231761eb75cdbbaa52b6b23cfd4df0d527173737c67b2cc4a7cd40f9ca06ac3300
SSDEEP

6144:M/yyfrX737v/vD3LPrXTYzvLvDnrnzij3b/7UOjvH/r3bn7f7fTfzHz/rnLkrvR5:PK

Score

10^/10

darkcomet dark rat discovery persistence rat trojan upx

Malware Config

Extracted

Family

darkcomet

Botnet

DARK RAT

wio.no-ip.biz:1604

Mutex

DC_MUTEX-F4QA1SB

Attributes

InstallPath
Windupdt\winupdate.exe
gencode
*�Q7*pU+TFBT
install
true
offline_keylogger
true
persistence
false
reg_key
winupdater

rc4.plain

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:\\Windupdt\\winupdate.exe"	JaffaCakes118_83073e64b798c4629d7cd8acf906c5d3.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	JaffaCakes118_83073e64b798c4629d7cd8acf906c5d3.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	explorer.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-1-5-21-2872745919-2748461613-2989606286-1000\Software\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Windupdt\\winupdate.exe"	JaffaCakes118_83073e64b798c4629d7cd8acf906c5d3.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2756 set thread context of 2968	2756	JaffaCakes118_83073e64b798c4629d7cd8acf906c5d3.exe	30
PID 2968 set thread context of 2744	2968	JaffaCakes118_83073e64b798c4629d7cd8acf906c5d3.exe	31
PID 2744 set thread context of 2644	2744	explorer.exe	32

UPX packed file 17 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2968-2-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2968-4-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2968-3-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2968-5-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2968-6-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2968-7-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2968-9-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2968-8-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2968-22-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2644-28-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2644-30-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2644-29-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2644-31-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2644-33-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2644-34-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2644-32-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2644-35-0x0000000000400000-0x00000000004B5000-memory.dmp	upx

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	JaffaCakes118_83073e64b798c4629d7cd8acf906c5d3.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_83073e64b798c4629d7cd8acf906c5d3.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	explorer.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 opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	JaffaCakes118_83073e64b798c4629d7cd8acf906c5d3.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	JaffaCakes118_83073e64b798c4629d7cd8acf906c5d3.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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	JaffaCakes118_83073e64b798c4629d7cd8acf906c5d3.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	JaffaCakes118_83073e64b798c4629d7cd8acf906c5d3.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	JaffaCakes118_83073e64b798c4629d7cd8acf906c5d3.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	explorer.exe

Suspicious use of AdjustPrivilegeToken 46 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	2968	JaffaCakes118_83073e64b798c4629d7cd8acf906c5d3.exe
Token: SeSecurityPrivilege	2968	JaffaCakes118_83073e64b798c4629d7cd8acf906c5d3.exe
Token: SeTakeOwnershipPrivilege	2968	JaffaCakes118_83073e64b798c4629d7cd8acf906c5d3.exe
Token: SeLoadDriverPrivilege	2968	JaffaCakes118_83073e64b798c4629d7cd8acf906c5d3.exe
Token: SeSystemProfilePrivilege	2968	JaffaCakes118_83073e64b798c4629d7cd8acf906c5d3.exe
Token: SeSystemtimePrivilege	2968	JaffaCakes118_83073e64b798c4629d7cd8acf906c5d3.exe
Token: SeProfSingleProcessPrivilege	2968	JaffaCakes118_83073e64b798c4629d7cd8acf906c5d3.exe
Token: SeIncBasePriorityPrivilege	2968	JaffaCakes118_83073e64b798c4629d7cd8acf906c5d3.exe
Token: SeCreatePagefilePrivilege	2968	JaffaCakes118_83073e64b798c4629d7cd8acf906c5d3.exe
Token: SeBackupPrivilege	2968	JaffaCakes118_83073e64b798c4629d7cd8acf906c5d3.exe
Token: SeRestorePrivilege	2968	JaffaCakes118_83073e64b798c4629d7cd8acf906c5d3.exe
Token: SeShutdownPrivilege	2968	JaffaCakes118_83073e64b798c4629d7cd8acf906c5d3.exe
Token: SeDebugPrivilege	2968	JaffaCakes118_83073e64b798c4629d7cd8acf906c5d3.exe
Token: SeSystemEnvironmentPrivilege	2968	JaffaCakes118_83073e64b798c4629d7cd8acf906c5d3.exe
Token: SeChangeNotifyPrivilege	2968	JaffaCakes118_83073e64b798c4629d7cd8acf906c5d3.exe
Token: SeRemoteShutdownPrivilege	2968	JaffaCakes118_83073e64b798c4629d7cd8acf906c5d3.exe
Token: SeUndockPrivilege	2968	JaffaCakes118_83073e64b798c4629d7cd8acf906c5d3.exe
Token: SeManageVolumePrivilege	2968	JaffaCakes118_83073e64b798c4629d7cd8acf906c5d3.exe
Token: SeImpersonatePrivilege	2968	JaffaCakes118_83073e64b798c4629d7cd8acf906c5d3.exe
Token: SeCreateGlobalPrivilege	2968	JaffaCakes118_83073e64b798c4629d7cd8acf906c5d3.exe
Token: 33	2968	JaffaCakes118_83073e64b798c4629d7cd8acf906c5d3.exe
Token: 34	2968	JaffaCakes118_83073e64b798c4629d7cd8acf906c5d3.exe
Token: 35	2968	JaffaCakes118_83073e64b798c4629d7cd8acf906c5d3.exe
Token: SeIncreaseQuotaPrivilege	2644	explorer.exe
Token: SeSecurityPrivilege	2644	explorer.exe
Token: SeTakeOwnershipPrivilege	2644	explorer.exe
Token: SeLoadDriverPrivilege	2644	explorer.exe
Token: SeSystemProfilePrivilege	2644	explorer.exe
Token: SeSystemtimePrivilege	2644	explorer.exe
Token: SeProfSingleProcessPrivilege	2644	explorer.exe
Token: SeIncBasePriorityPrivilege	2644	explorer.exe
Token: SeCreatePagefilePrivilege	2644	explorer.exe
Token: SeBackupPrivilege	2644	explorer.exe
Token: SeRestorePrivilege	2644	explorer.exe
Token: SeShutdownPrivilege	2644	explorer.exe
Token: SeDebugPrivilege	2644	explorer.exe
Token: SeSystemEnvironmentPrivilege	2644	explorer.exe
Token: SeChangeNotifyPrivilege	2644	explorer.exe
Token: SeRemoteShutdownPrivilege	2644	explorer.exe
Token: SeUndockPrivilege	2644	explorer.exe
Token: SeManageVolumePrivilege	2644	explorer.exe
Token: SeImpersonatePrivilege	2644	explorer.exe
Token: SeCreateGlobalPrivilege	2644	explorer.exe
Token: 33	2644	explorer.exe
Token: 34	2644	explorer.exe
Token: 35	2644	explorer.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
2756	JaffaCakes118_83073e64b798c4629d7cd8acf906c5d3.exe
2744	explorer.exe
2644	explorer.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 2756 wrote to memory of 2968	2756	JaffaCakes118_83073e64b798c4629d7cd8acf906c5d3.exe	30
PID 2756 wrote to memory of 2968	2756	JaffaCakes118_83073e64b798c4629d7cd8acf906c5d3.exe	30
PID 2756 wrote to memory of 2968	2756	JaffaCakes118_83073e64b798c4629d7cd8acf906c5d3.exe	30
PID 2756 wrote to memory of 2968	2756	JaffaCakes118_83073e64b798c4629d7cd8acf906c5d3.exe	30
PID 2756 wrote to memory of 2968	2756	JaffaCakes118_83073e64b798c4629d7cd8acf906c5d3.exe	30
PID 2756 wrote to memory of 2968	2756	JaffaCakes118_83073e64b798c4629d7cd8acf906c5d3.exe	30
PID 2756 wrote to memory of 2968	2756	JaffaCakes118_83073e64b798c4629d7cd8acf906c5d3.exe	30
PID 2756 wrote to memory of 2968	2756	JaffaCakes118_83073e64b798c4629d7cd8acf906c5d3.exe	30
PID 2756 wrote to memory of 2968	2756	JaffaCakes118_83073e64b798c4629d7cd8acf906c5d3.exe	30
PID 2968 wrote to memory of 2744	2968	JaffaCakes118_83073e64b798c4629d7cd8acf906c5d3.exe	31
PID 2968 wrote to memory of 2744	2968	JaffaCakes118_83073e64b798c4629d7cd8acf906c5d3.exe	31
PID 2968 wrote to memory of 2744	2968	JaffaCakes118_83073e64b798c4629d7cd8acf906c5d3.exe	31
PID 2968 wrote to memory of 2744	2968	JaffaCakes118_83073e64b798c4629d7cd8acf906c5d3.exe	31
PID 2968 wrote to memory of 2744	2968	JaffaCakes118_83073e64b798c4629d7cd8acf906c5d3.exe	31
PID 2968 wrote to memory of 2744	2968	JaffaCakes118_83073e64b798c4629d7cd8acf906c5d3.exe	31
PID 2744 wrote to memory of 2644	2744	explorer.exe	32
PID 2744 wrote to memory of 2644	2744	explorer.exe	32
PID 2744 wrote to memory of 2644	2744	explorer.exe	32
PID 2744 wrote to memory of 2644	2744	explorer.exe	32
PID 2744 wrote to memory of 2644	2744	explorer.exe	32
PID 2744 wrote to memory of 2644	2744	explorer.exe	32
PID 2744 wrote to memory of 2644	2744	explorer.exe	32
PID 2744 wrote to memory of 2644	2744	explorer.exe	32
PID 2744 wrote to memory of 2644	2744	explorer.exe	32

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_83073e64b798c4629d7cd8acf906c5d3.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_83073e64b798c4629d7cd8acf906c5d3.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2756
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_83073e64b798c4629d7cd8acf906c5d3.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_83073e64b798c4629d7cd8acf906c5d3.exe
  2⤵
  - 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:2968
- - C:\Windows\SysWOW64\explorer.exe
    "C:\Windows\SysWOW64\explorer.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:2744
  - - C:\Windows\SysWOW64\explorer.exe
      C:\Windows\SysWOW64\explorer.exe
      4⤵
      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:2644

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

memory/2644-28-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2644-35-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2644-32-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2644-34-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2644-33-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2644-31-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2644-29-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2644-30-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2744-16-0x0000000000400000-0x0000000000506000-memory.dmp

Filesize
1.0MB

Download
memory/2744-27-0x0000000000400000-0x0000000000506000-memory.dmp

Filesize
1.0MB

Download
memory/2744-21-0x0000000000400000-0x0000000000506000-memory.dmp

Filesize
1.0MB

Download
memory/2744-14-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2744-12-0x0000000000400000-0x0000000000506000-memory.dmp

Filesize
1.0MB

Download
memory/2968-8-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2968-22-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2968-2-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2968-9-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2968-7-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2968-6-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2968-5-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2968-3-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2968-4-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads