darkcomet | 9a585e42a4adc15b0629be04abc2dfe9f3f37a42b3453aec194a0610a7504fd8

Analysis

max time kernel
150s
max time network
118s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
25-01-2025 08:35

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General

Target

JaffaCakes118_29e19f09a0b43ebfa84a1b537cf5b0ae.exe
Size

1.5MB
MD5

29e19f09a0b43ebfa84a1b537cf5b0ae
SHA1

2a6c5360663c5e3285c10fea9d1fe3fa13047ba4
SHA256

9a585e42a4adc15b0629be04abc2dfe9f3f37a42b3453aec194a0610a7504fd8
SHA512

966e94af55239ad0b6870960263260e9da264e01caefcbfc5993bba6c1d904075ae740e0d2f7b6cc4244520a39f4ba45079d3a9858516337b1c6a36a92f01bf4
SSDEEP

24576:w8s+aoTZhS6E4Gj+nV+MmdbqlT51/4byNafFEOpf:w8nao3tAwUFJpf

Score

10^/10

darkcomet guest16 defense_evasion discovery persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

dark01.zapto.org:1604

Mutex

DC_MUTEX-WKRE1E8

Attributes

InstallPath
C:\Windows\Web1\microupdat.exe
gencode
Ln98HlmhKhC9
install
true
offline_keylogger
true
persistence
false
reg_key
MicroUpdate

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:\\Windows\\Web1\\microupdat.exe"	JaffaCakes118_29e19f09a0b43ebfa84a1b537cf5b0ae.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\SystemBiosVersion	microupdat.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	JaffaCakes118_29e19f09a0b43ebfa84a1b537cf5b0ae.exe

Executes dropped EXE 1 IoCs

pid	Process
2864	microupdat.exe

Identifies Wine through registry keys 2 TTPs 2 IoCs

Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

defense_evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000\Software\Wine	JaffaCakes118_29e19f09a0b43ebfa84a1b537cf5b0ae.exe
Key opened	\REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000\Software\Wine	microupdat.exe

Loads dropped DLL 2 IoCs

pid	Process
2672	JaffaCakes118_29e19f09a0b43ebfa84a1b537cf5b0ae.exe
2672	JaffaCakes118_29e19f09a0b43ebfa84a1b537cf5b0ae.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\MicroUpdate = "C:\\Windows\\Web1\\microupdat.exe"	JaffaCakes118_29e19f09a0b43ebfa84a1b537cf5b0ae.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
2672	JaffaCakes118_29e19f09a0b43ebfa84a1b537cf5b0ae.exe
2864	microupdat.exe

Drops file in Windows directory 3 IoCs

description	ioc	Process
File created	C:\Windows\Web1\microupdat.exe	JaffaCakes118_29e19f09a0b43ebfa84a1b537cf5b0ae.exe
File opened for modification	C:\Windows\Web1\microupdat.exe	JaffaCakes118_29e19f09a0b43ebfa84a1b537cf5b0ae.exe
File opened for modification	C:\Windows\Web1\	JaffaCakes118_29e19f09a0b43ebfa84a1b537cf5b0ae.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 2 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_29e19f09a0b43ebfa84a1b537cf5b0ae.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	microupdat.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2672	JaffaCakes118_29e19f09a0b43ebfa84a1b537cf5b0ae.exe
2864	microupdat.exe

Suspicious use of AdjustPrivilegeToken 46 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	2672	JaffaCakes118_29e19f09a0b43ebfa84a1b537cf5b0ae.exe
Token: SeSecurityPrivilege	2672	JaffaCakes118_29e19f09a0b43ebfa84a1b537cf5b0ae.exe
Token: SeTakeOwnershipPrivilege	2672	JaffaCakes118_29e19f09a0b43ebfa84a1b537cf5b0ae.exe
Token: SeLoadDriverPrivilege	2672	JaffaCakes118_29e19f09a0b43ebfa84a1b537cf5b0ae.exe
Token: SeSystemProfilePrivilege	2672	JaffaCakes118_29e19f09a0b43ebfa84a1b537cf5b0ae.exe
Token: SeSystemtimePrivilege	2672	JaffaCakes118_29e19f09a0b43ebfa84a1b537cf5b0ae.exe
Token: SeProfSingleProcessPrivilege	2672	JaffaCakes118_29e19f09a0b43ebfa84a1b537cf5b0ae.exe
Token: SeIncBasePriorityPrivilege	2672	JaffaCakes118_29e19f09a0b43ebfa84a1b537cf5b0ae.exe
Token: SeCreatePagefilePrivilege	2672	JaffaCakes118_29e19f09a0b43ebfa84a1b537cf5b0ae.exe
Token: SeBackupPrivilege	2672	JaffaCakes118_29e19f09a0b43ebfa84a1b537cf5b0ae.exe
Token: SeRestorePrivilege	2672	JaffaCakes118_29e19f09a0b43ebfa84a1b537cf5b0ae.exe
Token: SeShutdownPrivilege	2672	JaffaCakes118_29e19f09a0b43ebfa84a1b537cf5b0ae.exe
Token: SeDebugPrivilege	2672	JaffaCakes118_29e19f09a0b43ebfa84a1b537cf5b0ae.exe
Token: SeSystemEnvironmentPrivilege	2672	JaffaCakes118_29e19f09a0b43ebfa84a1b537cf5b0ae.exe
Token: SeChangeNotifyPrivilege	2672	JaffaCakes118_29e19f09a0b43ebfa84a1b537cf5b0ae.exe
Token: SeRemoteShutdownPrivilege	2672	JaffaCakes118_29e19f09a0b43ebfa84a1b537cf5b0ae.exe
Token: SeUndockPrivilege	2672	JaffaCakes118_29e19f09a0b43ebfa84a1b537cf5b0ae.exe
Token: SeManageVolumePrivilege	2672	JaffaCakes118_29e19f09a0b43ebfa84a1b537cf5b0ae.exe
Token: SeImpersonatePrivilege	2672	JaffaCakes118_29e19f09a0b43ebfa84a1b537cf5b0ae.exe
Token: SeCreateGlobalPrivilege	2672	JaffaCakes118_29e19f09a0b43ebfa84a1b537cf5b0ae.exe
Token: 33	2672	JaffaCakes118_29e19f09a0b43ebfa84a1b537cf5b0ae.exe
Token: 34	2672	JaffaCakes118_29e19f09a0b43ebfa84a1b537cf5b0ae.exe
Token: 35	2672	JaffaCakes118_29e19f09a0b43ebfa84a1b537cf5b0ae.exe
Token: SeIncreaseQuotaPrivilege	2864	microupdat.exe
Token: SeSecurityPrivilege	2864	microupdat.exe
Token: SeTakeOwnershipPrivilege	2864	microupdat.exe
Token: SeLoadDriverPrivilege	2864	microupdat.exe
Token: SeSystemProfilePrivilege	2864	microupdat.exe
Token: SeSystemtimePrivilege	2864	microupdat.exe
Token: SeProfSingleProcessPrivilege	2864	microupdat.exe
Token: SeIncBasePriorityPrivilege	2864	microupdat.exe
Token: SeCreatePagefilePrivilege	2864	microupdat.exe
Token: SeBackupPrivilege	2864	microupdat.exe
Token: SeRestorePrivilege	2864	microupdat.exe
Token: SeShutdownPrivilege	2864	microupdat.exe
Token: SeDebugPrivilege	2864	microupdat.exe
Token: SeSystemEnvironmentPrivilege	2864	microupdat.exe
Token: SeChangeNotifyPrivilege	2864	microupdat.exe
Token: SeRemoteShutdownPrivilege	2864	microupdat.exe
Token: SeUndockPrivilege	2864	microupdat.exe
Token: SeManageVolumePrivilege	2864	microupdat.exe
Token: SeImpersonatePrivilege	2864	microupdat.exe
Token: SeCreateGlobalPrivilege	2864	microupdat.exe
Token: 33	2864	microupdat.exe
Token: 34	2864	microupdat.exe
Token: 35	2864	microupdat.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2864	microupdat.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2672 wrote to memory of 2864	2672	JaffaCakes118_29e19f09a0b43ebfa84a1b537cf5b0ae.exe	31
PID 2672 wrote to memory of 2864	2672	JaffaCakes118_29e19f09a0b43ebfa84a1b537cf5b0ae.exe	31
PID 2672 wrote to memory of 2864	2672	JaffaCakes118_29e19f09a0b43ebfa84a1b537cf5b0ae.exe	31
PID 2672 wrote to memory of 2864	2672	JaffaCakes118_29e19f09a0b43ebfa84a1b537cf5b0ae.exe	31

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_29e19f09a0b43ebfa84a1b537cf5b0ae.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_29e19f09a0b43ebfa84a1b537cf5b0ae.exe"
1⤵
- Modifies WinLogon for persistence
- Checks BIOS information in registry
- Identifies Wine through registry keys
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2672
- C:\Windows\Web1\microupdat.exe
  "C:\Windows\Web1\microupdat.exe"
  2⤵
  - Checks BIOS information in registry
  - Executes dropped EXE
  - Identifies Wine through registry keys
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:2864

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

Virtualization/Sandbox Evasion

T1497

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Virtualization/Sandbox Evasion

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

\Windows\Web1\microupdat.exe

Filesize
1.5MB

MD5
29e19f09a0b43ebfa84a1b537cf5b0ae

SHA1
2a6c5360663c5e3285c10fea9d1fe3fa13047ba4

SHA256
9a585e42a4adc15b0629be04abc2dfe9f3f37a42b3453aec194a0610a7504fd8

SHA512
966e94af55239ad0b6870960263260e9da264e01caefcbfc5993bba6c1d904075ae740e0d2f7b6cc4244520a39f4ba45079d3a9858516337b1c6a36a92f01bf4

Download Submit
memory/2672-17-0x0000000005BA0000-0x0000000005D29000-memory.dmp

Filesize
1.5MB

Download
memory/2672-1-0x0000000000401000-0x00000000004AB000-memory.dmp

Filesize
680KB

Download
memory/2672-3-0x0000000000400000-0x0000000000588070-memory.dmp

Filesize
1.5MB

Download
memory/2672-4-0x0000000000400000-0x0000000000588070-memory.dmp

Filesize
1.5MB

Download
memory/2672-15-0x0000000000400000-0x0000000000588070-memory.dmp

Filesize
1.5MB

Download
memory/2672-14-0x0000000000400000-0x0000000000588070-memory.dmp

Filesize
1.5MB

Download
memory/2672-0-0x0000000000400000-0x0000000000588070-memory.dmp

Filesize
1.5MB

Download
memory/2672-18-0x0000000000401000-0x00000000004AB000-memory.dmp

Filesize
680KB

Download
memory/2864-26-0x0000000000400000-0x0000000000588070-memory.dmp

Filesize
1.5MB

Download
memory/2864-32-0x0000000000400000-0x0000000000588070-memory.dmp

Filesize
1.5MB

Download
memory/2864-23-0x0000000000400000-0x0000000000588070-memory.dmp

Filesize
1.5MB

Download
memory/2864-22-0x0000000000400000-0x0000000000588070-memory.dmp

Filesize
1.5MB

Download
memory/2864-21-0x0000000000400000-0x0000000000588070-memory.dmp

Filesize
1.5MB

Download
memory/2864-24-0x0000000000400000-0x0000000000588070-memory.dmp

Filesize
1.5MB

Download
memory/2864-25-0x0000000000400000-0x0000000000588070-memory.dmp

Filesize
1.5MB

Download
memory/2864-19-0x0000000000400000-0x0000000000588070-memory.dmp

Filesize
1.5MB

Download
memory/2864-27-0x0000000000400000-0x0000000000588070-memory.dmp

Filesize
1.5MB

Download
memory/2864-28-0x0000000000400000-0x0000000000588070-memory.dmp

Filesize
1.5MB

Download
memory/2864-29-0x0000000000400000-0x0000000000588070-memory.dmp

Filesize
1.5MB

Download
memory/2864-30-0x0000000000400000-0x0000000000588070-memory.dmp

Filesize
1.5MB

Download
memory/2864-31-0x0000000000400000-0x0000000000588070-memory.dmp

Filesize
1.5MB

Download
memory/2864-20-0x0000000000400000-0x0000000000588070-memory.dmp

Filesize
1.5MB

Download
memory/2864-33-0x0000000000400000-0x0000000000588070-memory.dmp

Filesize
1.5MB

Download
memory/2864-34-0x0000000000400000-0x0000000000588070-memory.dmp

Filesize
1.5MB

Download
memory/2864-35-0x0000000000400000-0x0000000000588070-memory.dmp

Filesize
1.5MB

Download
memory/2864-36-0x0000000000400000-0x0000000000588070-memory.dmp

Filesize
1.5MB

Download
memory/2864-37-0x0000000000400000-0x0000000000588070-memory.dmp

Filesize
1.5MB

Download
memory/2864-38-0x0000000000400000-0x0000000000588070-memory.dmp

Filesize
1.5MB

Download
memory/2864-39-0x0000000000400000-0x0000000000588070-memory.dmp

Filesize
1.5MB

Download
memory/2864-40-0x0000000000400000-0x0000000000588070-memory.dmp

Filesize
1.5MB

Download
memory/2864-41-0x0000000000400000-0x0000000000588070-memory.dmp

Filesize
1.5MB

Download
memory/2864-42-0x0000000000400000-0x0000000000588070-memory.dmp

Filesize
1.5MB

Download
memory/2864-43-0x0000000000400000-0x0000000000588070-memory.dmp

Filesize
1.5MB

Download
memory/2864-44-0x0000000000400000-0x0000000000588070-memory.dmp

Filesize
1.5MB

Download