darkcomet | 196b46719d806782360be5b38c06d69ea585e2bf313b2af6fc2fafa65df34136

Analysis

max time kernel
120s
max time network
117s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
16-12-2024 14:40

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General

Target

196b46719d806782360be5b38c06d69ea585e2bf313b2af6fc2fafa65df34136N.exe
Size

1.2MB
MD5

c9f7c23a4105e1269d9aeea7f3ff6a70
SHA1

3dbcac66eee0330000d7644aafcddc83280c8c22
SHA256

196b46719d806782360be5b38c06d69ea585e2bf313b2af6fc2fafa65df34136
SHA512

caa3607cc4555ce22c9f96da7c8863d00905dd4126df49c0c0d58239c4840eb65c34be2ca05f423a15a5d28f9b4881632d3488b9f9e7bb9ec5766cc9b6d6da5e
SSDEEP

12288:f2FRv2FRN2FRh2FRIuI0Q5idun7RE529VLgoSf9dyFVuIQ/jLNp1c9LZ4VC:IuI08idO1EG/zuRW6VC

Score

10^/10

darkcomet guest16 discovery evasion persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

marcel.no-ip.org:1604

Mutex

DC_MUTEX-J9U2RA3

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
kk6imTnrgZfJ
install
true
offline_keylogger
true
persistence
true
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:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	VIRUS.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
1796	attrib.exe
4732	attrib.exe

Checks computer location settings 2 TTPs 2 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-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	196b46719d806782360be5b38c06d69ea585e2bf313b2af6fc2fafa65df34136N.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	VIRUS.EXE

Executes dropped EXE 2 IoCs

pid	Process
2336	VIRUS.EXE
3644	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-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	VIRUS.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	msdcsc.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3148 set thread context of 4088	3148	196b46719d806782360be5b38c06d69ea585e2bf313b2af6fc2fafa65df34136N.exe	83

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 10 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	VIRUS.EXE
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	196b46719d806782360be5b38c06d69ea585e2bf313b2af6fc2fafa65df34136N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	196b46719d806782360be5b38c06d69ea585e2bf313b2af6fc2fafa65df34136N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	NOTEPAD.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Modifies registry class 2 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000_Classes\Local Settings	196b46719d806782360be5b38c06d69ea585e2bf313b2af6fc2fafa65df34136N.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	VIRUS.EXE

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
5032	NOTEPAD.EXE

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3644	msdcsc.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	2336	VIRUS.EXE
Token: SeSecurityPrivilege	2336	VIRUS.EXE
Token: SeTakeOwnershipPrivilege	2336	VIRUS.EXE
Token: SeLoadDriverPrivilege	2336	VIRUS.EXE
Token: SeSystemProfilePrivilege	2336	VIRUS.EXE
Token: SeSystemtimePrivilege	2336	VIRUS.EXE
Token: SeProfSingleProcessPrivilege	2336	VIRUS.EXE
Token: SeIncBasePriorityPrivilege	2336	VIRUS.EXE
Token: SeCreatePagefilePrivilege	2336	VIRUS.EXE
Token: SeBackupPrivilege	2336	VIRUS.EXE
Token: SeRestorePrivilege	2336	VIRUS.EXE
Token: SeShutdownPrivilege	2336	VIRUS.EXE
Token: SeDebugPrivilege	2336	VIRUS.EXE
Token: SeSystemEnvironmentPrivilege	2336	VIRUS.EXE
Token: SeChangeNotifyPrivilege	2336	VIRUS.EXE
Token: SeRemoteShutdownPrivilege	2336	VIRUS.EXE
Token: SeUndockPrivilege	2336	VIRUS.EXE
Token: SeManageVolumePrivilege	2336	VIRUS.EXE
Token: SeImpersonatePrivilege	2336	VIRUS.EXE
Token: SeCreateGlobalPrivilege	2336	VIRUS.EXE
Token: 33	2336	VIRUS.EXE
Token: 34	2336	VIRUS.EXE
Token: 35	2336	VIRUS.EXE
Token: 36	2336	VIRUS.EXE
Token: SeIncreaseQuotaPrivilege	3644	msdcsc.exe
Token: SeSecurityPrivilege	3644	msdcsc.exe
Token: SeTakeOwnershipPrivilege	3644	msdcsc.exe
Token: SeLoadDriverPrivilege	3644	msdcsc.exe
Token: SeSystemProfilePrivilege	3644	msdcsc.exe
Token: SeSystemtimePrivilege	3644	msdcsc.exe
Token: SeProfSingleProcessPrivilege	3644	msdcsc.exe
Token: SeIncBasePriorityPrivilege	3644	msdcsc.exe
Token: SeCreatePagefilePrivilege	3644	msdcsc.exe
Token: SeBackupPrivilege	3644	msdcsc.exe
Token: SeRestorePrivilege	3644	msdcsc.exe
Token: SeShutdownPrivilege	3644	msdcsc.exe
Token: SeDebugPrivilege	3644	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	3644	msdcsc.exe
Token: SeChangeNotifyPrivilege	3644	msdcsc.exe
Token: SeRemoteShutdownPrivilege	3644	msdcsc.exe
Token: SeUndockPrivilege	3644	msdcsc.exe
Token: SeManageVolumePrivilege	3644	msdcsc.exe
Token: SeImpersonatePrivilege	3644	msdcsc.exe
Token: SeCreateGlobalPrivilege	3644	msdcsc.exe
Token: 33	3644	msdcsc.exe
Token: 34	3644	msdcsc.exe
Token: 35	3644	msdcsc.exe
Token: 36	3644	msdcsc.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
3148	196b46719d806782360be5b38c06d69ea585e2bf313b2af6fc2fafa65df34136N.exe
3644	msdcsc.exe

Suspicious use of WriteProcessMemory 53 IoCs

description	pid	Process	procid_target
PID 3148 wrote to memory of 4088	3148	196b46719d806782360be5b38c06d69ea585e2bf313b2af6fc2fafa65df34136N.exe	83
PID 3148 wrote to memory of 4088	3148	196b46719d806782360be5b38c06d69ea585e2bf313b2af6fc2fafa65df34136N.exe	83
PID 3148 wrote to memory of 4088	3148	196b46719d806782360be5b38c06d69ea585e2bf313b2af6fc2fafa65df34136N.exe	83
PID 3148 wrote to memory of 4088	3148	196b46719d806782360be5b38c06d69ea585e2bf313b2af6fc2fafa65df34136N.exe	83
PID 3148 wrote to memory of 4088	3148	196b46719d806782360be5b38c06d69ea585e2bf313b2af6fc2fafa65df34136N.exe	83
PID 3148 wrote to memory of 4088	3148	196b46719d806782360be5b38c06d69ea585e2bf313b2af6fc2fafa65df34136N.exe	83
PID 3148 wrote to memory of 4088	3148	196b46719d806782360be5b38c06d69ea585e2bf313b2af6fc2fafa65df34136N.exe	83
PID 3148 wrote to memory of 4088	3148	196b46719d806782360be5b38c06d69ea585e2bf313b2af6fc2fafa65df34136N.exe	83
PID 3148 wrote to memory of 4088	3148	196b46719d806782360be5b38c06d69ea585e2bf313b2af6fc2fafa65df34136N.exe	83
PID 3148 wrote to memory of 4088	3148	196b46719d806782360be5b38c06d69ea585e2bf313b2af6fc2fafa65df34136N.exe	83
PID 4088 wrote to memory of 5032	4088	196b46719d806782360be5b38c06d69ea585e2bf313b2af6fc2fafa65df34136N.exe	84
PID 4088 wrote to memory of 5032	4088	196b46719d806782360be5b38c06d69ea585e2bf313b2af6fc2fafa65df34136N.exe	84
PID 4088 wrote to memory of 5032	4088	196b46719d806782360be5b38c06d69ea585e2bf313b2af6fc2fafa65df34136N.exe	84
PID 4088 wrote to memory of 2336	4088	196b46719d806782360be5b38c06d69ea585e2bf313b2af6fc2fafa65df34136N.exe	85
PID 4088 wrote to memory of 2336	4088	196b46719d806782360be5b38c06d69ea585e2bf313b2af6fc2fafa65df34136N.exe	85
PID 4088 wrote to memory of 2336	4088	196b46719d806782360be5b38c06d69ea585e2bf313b2af6fc2fafa65df34136N.exe	85
PID 2336 wrote to memory of 1476	2336	VIRUS.EXE	86
PID 2336 wrote to memory of 1476	2336	VIRUS.EXE	86
PID 2336 wrote to memory of 1476	2336	VIRUS.EXE	86
PID 2336 wrote to memory of 2152	2336	VIRUS.EXE	88
PID 2336 wrote to memory of 2152	2336	VIRUS.EXE	88
PID 2336 wrote to memory of 2152	2336	VIRUS.EXE	88
PID 1476 wrote to memory of 1796	1476	cmd.exe	90
PID 1476 wrote to memory of 1796	1476	cmd.exe	90
PID 1476 wrote to memory of 1796	1476	cmd.exe	90
PID 2152 wrote to memory of 4732	2152	cmd.exe	91
PID 2152 wrote to memory of 4732	2152	cmd.exe	91
PID 2152 wrote to memory of 4732	2152	cmd.exe	91
PID 2336 wrote to memory of 3644	2336	VIRUS.EXE	92
PID 2336 wrote to memory of 3644	2336	VIRUS.EXE	92
PID 2336 wrote to memory of 3644	2336	VIRUS.EXE	92
PID 3644 wrote to memory of 4608	3644	msdcsc.exe	93
PID 3644 wrote to memory of 4608	3644	msdcsc.exe	93
PID 3644 wrote to memory of 4608	3644	msdcsc.exe	93
PID 3644 wrote to memory of 4608	3644	msdcsc.exe	93
PID 3644 wrote to memory of 4608	3644	msdcsc.exe	93
PID 3644 wrote to memory of 4608	3644	msdcsc.exe	93
PID 3644 wrote to memory of 4608	3644	msdcsc.exe	93
PID 3644 wrote to memory of 4608	3644	msdcsc.exe	93
PID 3644 wrote to memory of 4608	3644	msdcsc.exe	93
PID 3644 wrote to memory of 4608	3644	msdcsc.exe	93
PID 3644 wrote to memory of 4608	3644	msdcsc.exe	93
PID 3644 wrote to memory of 4608	3644	msdcsc.exe	93
PID 3644 wrote to memory of 4608	3644	msdcsc.exe	93
PID 3644 wrote to memory of 4608	3644	msdcsc.exe	93
PID 3644 wrote to memory of 4608	3644	msdcsc.exe	93
PID 3644 wrote to memory of 4608	3644	msdcsc.exe	93
PID 3644 wrote to memory of 4608	3644	msdcsc.exe	93
PID 3644 wrote to memory of 4608	3644	msdcsc.exe	93
PID 3644 wrote to memory of 4608	3644	msdcsc.exe	93
PID 3644 wrote to memory of 4608	3644	msdcsc.exe	93
PID 3644 wrote to memory of 4608	3644	msdcsc.exe	93
PID 3644 wrote to memory of 4608	3644	msdcsc.exe	93

Views/modifies file attributes 1 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
1796	attrib.exe
4732	attrib.exe

C:\Users\Admin\AppData\Local\Temp\196b46719d806782360be5b38c06d69ea585e2bf313b2af6fc2fafa65df34136N.exe
"C:\Users\Admin\AppData\Local\Temp\196b46719d806782360be5b38c06d69ea585e2bf313b2af6fc2fafa65df34136N.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3148
- C:\Users\Admin\AppData\Local\Temp\196b46719d806782360be5b38c06d69ea585e2bf313b2af6fc2fafa65df34136N.exe
  "C:\Users\Admin\AppData\Local\Temp\196b46719d806782360be5b38c06d69ea585e2bf313b2af6fc2fafa65df34136N.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:4088
- - C:\Windows\SysWOW64\NOTEPAD.EXE
    "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Local\Temp\GEHEIM.TXT
    3⤵
    - System Location Discovery: System Language Discovery
    - Opens file in notepad (likely ransom note)
    PID:5032
- - C:\Users\Admin\AppData\Local\Temp\VIRUS.EXE
    "C:\Users\Admin\AppData\Local\Temp\VIRUS.EXE"
    3⤵
    - Modifies WinLogon for persistence
    - Checks computer location settings
    - Executes dropped EXE
    - Adds Run key to start application
    - System Location Discovery: System Language Discovery
    - Modifies registry class
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:2336
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\VIRUS.EXE" +s +h
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious use of WriteProcessMemory
      PID:1476
    - - C:\Windows\SysWOW64\attrib.exe
        
        attrib "C:\Users\Admin\AppData\Local\Temp\VIRUS.EXE" +s +h
        5⤵
        Sets file to hidden
        System Location Discovery: System Language Discovery
        Views/modifies file attributes
        
        PID:1796
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious use of WriteProcessMemory
      PID:2152
    - - C:\Windows\SysWOW64\attrib.exe
        
        attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
        5⤵
        Sets file to hidden
        System Location Discovery: System Language Discovery
        Views/modifies file attributes
        
        PID:4732
  - - C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
      "C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
      4⤵
      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:3644
    - - C:\Windows\SysWOW64\notepad.exe
        
        notepad
        5⤵
        System Location Discovery: System Language Discovery
        
        PID:4608

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

C:\Users\Admin\AppData\Local\Temp\GEHEIM.TXT

Filesize
18B

MD5
5ae58a6fc8b238e8838c1a49e8557eaf

SHA1
df81e6640eb11fc475de52aa1763dc781fc67365

SHA256
0cf2be8e4311df50eb2b7cd229af8687c0ab117313cecc3a10ff28a85e3723db

SHA512
59862e38437d46e1e697f1460d3df8f1c24c4b5485d28fcddd009c4995cc8f8987a9eb615ec4e9f8b245943039713c505258b4c33193dd41ad0949082aec54c0

Download Submit
C:\Users\Admin\AppData\Local\Temp\VIRUS.EXE

Filesize
690KB

MD5
529c8a0b5954c4d030d9107794b65d0c

SHA1
b9d91ee857529f17b33f9ea49141e41e73562085

SHA256
781859c0b39a5773a0e706bd87506bd1867de6678d87a61b0a4c64aba75d7410

SHA512
0a91b8f1a1a70d2cac32822d13f5b133bb16a29352de95898ba70c4ac34b9f59a0e9eecb86952be53939af237fe1856e7ef97694904ee0e3007a7c096dc6b3eb

Download Submit
memory/2336-87-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/2336-22-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/3644-93-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/3644-95-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/3644-98-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/3644-97-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/3644-96-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/3644-94-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/3644-88-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/3644-89-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/3644-90-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/3644-91-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/3644-92-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/4088-2-0x0000000000400000-0x0000000000519000-memory.dmp

Filesize
1.1MB

Download
memory/4088-3-0x0000000000400000-0x0000000000519000-memory.dmp

Filesize
1.1MB

Download
memory/4088-20-0x0000000000400000-0x0000000000519000-memory.dmp

Filesize
1.1MB

Download
memory/4088-4-0x0000000000400000-0x0000000000519000-memory.dmp

Filesize
1.1MB

Download
memory/4088-6-0x0000000000400000-0x0000000000519000-memory.dmp

Filesize
1.1MB

Download
memory/4608-85-0x00000000005F0000-0x00000000005F1000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads