darkcomet | af42c9c8dbe06b86b405ebafd55d3683ef50756422193154797c089d6fc056fe

Analysis

max time kernel
150s
max time network
109s
platform
windows10-2004_x64
resource
win10v2004-20240709-en
resource tags

arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
submitted
26/07/2024, 02:05

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General

Target
af42c9c8dbe06b86b405ebafd55d3683ef50756422193154797c089d6fc056fe.exe
Size 691KB
Sample240726-ch9ffssfrd
SHA256 af42c9c8dbe06b86b405ebafd55d3683ef50756422193154797c089d6fc056fe
MD5 e2d5c62c52be4b7a373943783d03d8b1
SHA1 3a115983e2ac0b94982ad5c9e701225151875ca6
SHA512 78d179ac338bb9e78909aadb1ffa7cc7fc4b9c4136dc1fb14e8c63916f6b7da93722aa7dccf7afdc05548d3657ea7c95608a4a60fee6a3b09418b78f5074b64e
SSDEEP 12288:Y9HFJ9rJxRX1uVVjoaWSoynxdO1FVBaOiRZTERfIhNkNCCLo9EkNC/O:MZ1xuVVjfFoynPaVBUR8f+kN10Ed
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

darkcomet guest16 discovery evasion persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

jvjv2044duck33.duckdns.org:1604

Mutex

DC_MUTEX-U9J0V31

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
4xYePg256T0S
install
true
offline_keylogger
true
persistence
true
reg_key
WindowsTemp

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:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	af42c9c8dbe06b86b405ebafd55d3683ef50756422193154797c089d6fc056fe.exe

Sets file to hidden 1 TTPs 2 IoCs

Modifies file attributes to stop it showing in Explorer etc.

evasion

Hidden Files and Directories

T1564.001

pid	Process
4228	attrib.exe
4780	attrib.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-1-5-21-2990742725-2267136959-192470804-1000\Control Panel\International\Geo\Nation	af42c9c8dbe06b86b405ebafd55d3683ef50756422193154797c089d6fc056fe.exe

Executes dropped EXE 2 IoCs

pid	Process
3052	ULTIMAMULTI2024.EXE
1468	msdcsc.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-1-5-21-2990742725-2267136959-192470804-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\WindowsTemp = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	af42c9c8dbe06b86b405ebafd55d3683ef50756422193154797c089d6fc056fe.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2990742725-2267136959-192470804-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\WindowsTemp = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	msdcsc.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 8 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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	attrib.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	attrib.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	msdcsc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	notepad.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	af42c9c8dbe06b86b405ebafd55d3683ef50756422193154797c089d6fc056fe.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ULTIMAMULTI2024.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	af42c9c8dbe06b86b405ebafd55d3683ef50756422193154797c089d6fc056fe.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1468	msdcsc.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	436	af42c9c8dbe06b86b405ebafd55d3683ef50756422193154797c089d6fc056fe.exe
Token: SeSecurityPrivilege	436	af42c9c8dbe06b86b405ebafd55d3683ef50756422193154797c089d6fc056fe.exe
Token: SeTakeOwnershipPrivilege	436	af42c9c8dbe06b86b405ebafd55d3683ef50756422193154797c089d6fc056fe.exe
Token: SeLoadDriverPrivilege	436	af42c9c8dbe06b86b405ebafd55d3683ef50756422193154797c089d6fc056fe.exe
Token: SeSystemProfilePrivilege	436	af42c9c8dbe06b86b405ebafd55d3683ef50756422193154797c089d6fc056fe.exe
Token: SeSystemtimePrivilege	436	af42c9c8dbe06b86b405ebafd55d3683ef50756422193154797c089d6fc056fe.exe
Token: SeProfSingleProcessPrivilege	436	af42c9c8dbe06b86b405ebafd55d3683ef50756422193154797c089d6fc056fe.exe
Token: SeIncBasePriorityPrivilege	436	af42c9c8dbe06b86b405ebafd55d3683ef50756422193154797c089d6fc056fe.exe
Token: SeCreatePagefilePrivilege	436	af42c9c8dbe06b86b405ebafd55d3683ef50756422193154797c089d6fc056fe.exe
Token: SeBackupPrivilege	436	af42c9c8dbe06b86b405ebafd55d3683ef50756422193154797c089d6fc056fe.exe
Token: SeRestorePrivilege	436	af42c9c8dbe06b86b405ebafd55d3683ef50756422193154797c089d6fc056fe.exe
Token: SeShutdownPrivilege	436	af42c9c8dbe06b86b405ebafd55d3683ef50756422193154797c089d6fc056fe.exe
Token: SeDebugPrivilege	436	af42c9c8dbe06b86b405ebafd55d3683ef50756422193154797c089d6fc056fe.exe
Token: SeSystemEnvironmentPrivilege	436	af42c9c8dbe06b86b405ebafd55d3683ef50756422193154797c089d6fc056fe.exe
Token: SeChangeNotifyPrivilege	436	af42c9c8dbe06b86b405ebafd55d3683ef50756422193154797c089d6fc056fe.exe
Token: SeRemoteShutdownPrivilege	436	af42c9c8dbe06b86b405ebafd55d3683ef50756422193154797c089d6fc056fe.exe
Token: SeUndockPrivilege	436	af42c9c8dbe06b86b405ebafd55d3683ef50756422193154797c089d6fc056fe.exe
Token: SeManageVolumePrivilege	436	af42c9c8dbe06b86b405ebafd55d3683ef50756422193154797c089d6fc056fe.exe
Token: SeImpersonatePrivilege	436	af42c9c8dbe06b86b405ebafd55d3683ef50756422193154797c089d6fc056fe.exe
Token: SeCreateGlobalPrivilege	436	af42c9c8dbe06b86b405ebafd55d3683ef50756422193154797c089d6fc056fe.exe
Token: 33	436	af42c9c8dbe06b86b405ebafd55d3683ef50756422193154797c089d6fc056fe.exe
Token: 34	436	af42c9c8dbe06b86b405ebafd55d3683ef50756422193154797c089d6fc056fe.exe
Token: 35	436	af42c9c8dbe06b86b405ebafd55d3683ef50756422193154797c089d6fc056fe.exe
Token: 36	436	af42c9c8dbe06b86b405ebafd55d3683ef50756422193154797c089d6fc056fe.exe
Token: SeIncreaseQuotaPrivilege	1468	msdcsc.exe
Token: SeSecurityPrivilege	1468	msdcsc.exe
Token: SeTakeOwnershipPrivilege	1468	msdcsc.exe
Token: SeLoadDriverPrivilege	1468	msdcsc.exe
Token: SeSystemProfilePrivilege	1468	msdcsc.exe
Token: SeSystemtimePrivilege	1468	msdcsc.exe
Token: SeProfSingleProcessPrivilege	1468	msdcsc.exe
Token: SeIncBasePriorityPrivilege	1468	msdcsc.exe
Token: SeCreatePagefilePrivilege	1468	msdcsc.exe
Token: SeBackupPrivilege	1468	msdcsc.exe
Token: SeRestorePrivilege	1468	msdcsc.exe
Token: SeShutdownPrivilege	1468	msdcsc.exe
Token: SeDebugPrivilege	1468	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	1468	msdcsc.exe
Token: SeChangeNotifyPrivilege	1468	msdcsc.exe
Token: SeRemoteShutdownPrivilege	1468	msdcsc.exe
Token: SeUndockPrivilege	1468	msdcsc.exe
Token: SeManageVolumePrivilege	1468	msdcsc.exe
Token: SeImpersonatePrivilege	1468	msdcsc.exe
Token: SeCreateGlobalPrivilege	1468	msdcsc.exe
Token: 33	1468	msdcsc.exe
Token: 34	1468	msdcsc.exe
Token: 35	1468	msdcsc.exe
Token: 36	1468	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1468	msdcsc.exe

Suspicious use of WriteProcessMemory 40 IoCs

description	pid	Process	procid_target
PID 436 wrote to memory of 3668	436	af42c9c8dbe06b86b405ebafd55d3683ef50756422193154797c089d6fc056fe.exe	85
PID 436 wrote to memory of 3668	436	af42c9c8dbe06b86b405ebafd55d3683ef50756422193154797c089d6fc056fe.exe	85
PID 436 wrote to memory of 3668	436	af42c9c8dbe06b86b405ebafd55d3683ef50756422193154797c089d6fc056fe.exe	85
PID 436 wrote to memory of 2528	436	af42c9c8dbe06b86b405ebafd55d3683ef50756422193154797c089d6fc056fe.exe	87
PID 436 wrote to memory of 2528	436	af42c9c8dbe06b86b405ebafd55d3683ef50756422193154797c089d6fc056fe.exe	87
PID 436 wrote to memory of 2528	436	af42c9c8dbe06b86b405ebafd55d3683ef50756422193154797c089d6fc056fe.exe	87
PID 436 wrote to memory of 3052	436	af42c9c8dbe06b86b405ebafd55d3683ef50756422193154797c089d6fc056fe.exe	89
PID 436 wrote to memory of 3052	436	af42c9c8dbe06b86b405ebafd55d3683ef50756422193154797c089d6fc056fe.exe	89
PID 436 wrote to memory of 3052	436	af42c9c8dbe06b86b405ebafd55d3683ef50756422193154797c089d6fc056fe.exe	89
PID 3668 wrote to memory of 4228	3668	cmd.exe	90
PID 3668 wrote to memory of 4228	3668	cmd.exe	90
PID 3668 wrote to memory of 4228	3668	cmd.exe	90
PID 2528 wrote to memory of 4780	2528	cmd.exe	91
PID 2528 wrote to memory of 4780	2528	cmd.exe	91
PID 2528 wrote to memory of 4780	2528	cmd.exe	91
PID 436 wrote to memory of 1468	436	af42c9c8dbe06b86b405ebafd55d3683ef50756422193154797c089d6fc056fe.exe	93
PID 436 wrote to memory of 1468	436	af42c9c8dbe06b86b405ebafd55d3683ef50756422193154797c089d6fc056fe.exe	93
PID 436 wrote to memory of 1468	436	af42c9c8dbe06b86b405ebafd55d3683ef50756422193154797c089d6fc056fe.exe	93
PID 1468 wrote to memory of 3040	1468	msdcsc.exe	94
PID 1468 wrote to memory of 3040	1468	msdcsc.exe	94
PID 1468 wrote to memory of 3040	1468	msdcsc.exe	94
PID 1468 wrote to memory of 3040	1468	msdcsc.exe	94
PID 1468 wrote to memory of 3040	1468	msdcsc.exe	94
PID 1468 wrote to memory of 3040	1468	msdcsc.exe	94
PID 1468 wrote to memory of 3040	1468	msdcsc.exe	94
PID 1468 wrote to memory of 3040	1468	msdcsc.exe	94
PID 1468 wrote to memory of 3040	1468	msdcsc.exe	94
PID 1468 wrote to memory of 3040	1468	msdcsc.exe	94
PID 1468 wrote to memory of 3040	1468	msdcsc.exe	94
PID 1468 wrote to memory of 3040	1468	msdcsc.exe	94
PID 1468 wrote to memory of 3040	1468	msdcsc.exe	94
PID 1468 wrote to memory of 3040	1468	msdcsc.exe	94
PID 1468 wrote to memory of 3040	1468	msdcsc.exe	94
PID 1468 wrote to memory of 3040	1468	msdcsc.exe	94
PID 1468 wrote to memory of 3040	1468	msdcsc.exe	94
PID 1468 wrote to memory of 3040	1468	msdcsc.exe	94
PID 1468 wrote to memory of 3040	1468	msdcsc.exe	94
PID 1468 wrote to memory of 3040	1468	msdcsc.exe	94
PID 1468 wrote to memory of 3040	1468	msdcsc.exe	94
PID 1468 wrote to memory of 3040	1468	msdcsc.exe	94

Views/modifies file attributes 1 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
4228	attrib.exe
4780	attrib.exe

C:\Users\Admin\AppData\Local\Temp\af42c9c8dbe06b86b405ebafd55d3683ef50756422193154797c089d6fc056fe.exe
"C:\Users\Admin\AppData\Local\Temp\af42c9c8dbe06b86b405ebafd55d3683ef50756422193154797c089d6fc056fe.exe"
1⤵
- 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:436
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\af42c9c8dbe06b86b405ebafd55d3683ef50756422193154797c089d6fc056fe.exe" +s +h
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3668
- - C:\Windows\SysWOW64\attrib.exe
    attrib "C:\Users\Admin\AppData\Local\Temp\af42c9c8dbe06b86b405ebafd55d3683ef50756422193154797c089d6fc056fe.exe" +s +h
    3⤵
    - Sets file to hidden
    - System Location Discovery: System Language Discovery
    - Views/modifies file attributes
    PID:4228
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2528
- - C:\Windows\SysWOW64\attrib.exe
    attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
    3⤵
    - Sets file to hidden
    - System Location Discovery: System Language Discovery
    - Views/modifies file attributes
    PID:4780
- C:\Users\Admin\AppData\Local\Temp\ULTIMAMULTI2024.EXE
  "C:\Users\Admin\AppData\Local\Temp\ULTIMAMULTI2024.EXE"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:3052
- C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
  "C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1468
- - C:\Windows\SysWOW64\notepad.exe
    notepad
    3⤵
    - System Location Discovery: System Language Discovery
    PID:3040

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

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

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

ULTIMAMULTI2024.EXE

Path C:\Users\Admin\AppData\Local\Temp\ULTIMAMULTI2024.EXE
Size 33KB
SHA256 b58e20b5e2888cc7b0716bb858be28ff328d35e487f5c64dadc73cf6c3dd5df8
MD5 0a1c8bdec0475a012049ae3eb0e7a0ef
SHA1 21e7736e539d9f3af66bdcb22b21cf7882aa531e
SHA512 1c05f9daf94bb063238c42798ecc024afb6ca48d627e5d25d1898fc238283d96eb3b9fa3c7a4065fa2a805945dad0a9039c1807a35fdf5280d32afc35db857f5
SSDEEP 768:s0Oc8QLcC+uo9ghVRfWuFVdXPNAjJDTZsYv37n9:s0+Q1+59ghVRVXf+jJDTZsYvL9
MD5 SHA1 SHA512 SSDEEP

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msdcsc.exe

Path C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
Size 691KB
SHA256 af42c9c8dbe06b86b405ebafd55d3683ef50756422193154797c089d6fc056fe
MD5 e2d5c62c52be4b7a373943783d03d8b1
SHA1 3a115983e2ac0b94982ad5c9e701225151875ca6
SHA512 78d179ac338bb9e78909aadb1ffa7cc7fc4b9c4136dc1fb14e8c63916f6b7da93722aa7dccf7afdc05548d3657ea7c95608a4a60fee6a3b09418b78f5074b64e
SSDEEP 12288:Y9HFJ9rJxRX1uVVjoaWSoynxdO1FVBaOiRZTERfIhNkNCCLo9EkNC/O:MZ1xuVVjfFoynPaVBUR8f+kN10Ed
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/436-0-0x0000000000620000-0x0000000000621000-memory.dmp

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memory/436-81-0x0000000000400000-0x00000000004BA000-memory.dmp

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memory/1468-97-0x0000000000400000-0x00000000004BA000-memory.dmp

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memory/1468-86-0x0000000000400000-0x00000000004BA000-memory.dmp

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memory/1468-82-0x0000000000400000-0x00000000004BA000-memory.dmp

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memory/3040-80-0x0000000000670000-0x0000000000671000-memory.dmp

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memory/3052-16-0x0000000005450000-0x00000000054EC000-memory.dmp

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memory/3052-68-0x0000000005720000-0x0000000005776000-memory.dmp

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memory/3052-69-0x0000000073290000-0x0000000073A40000-memory.dmp

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memory/3052-67-0x0000000005500000-0x000000000550A000-memory.dmp

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memory/3052-18-0x0000000005590000-0x0000000005622000-memory.dmp

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memory/3052-17-0x0000000005AA0000-0x0000000006044000-memory.dmp

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memory/3052-84-0x000000007329E000-0x000000007329F000-memory.dmp

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memory/3052-85-0x0000000073290000-0x0000000073A40000-memory.dmp

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memory/3052-15-0x0000000000B90000-0x0000000000BA0000-memory.dmp

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memory/3052-14-0x000000007329E000-0x000000007329F000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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