darkcomet | 87e2472ea39ecbc181be014414641c7eff9d50af85842b3dee2296a1994a1a4d

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
01/01/2025, 08:42

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General

Target
JaffaCakes118_4e84418f73d699329bca84d43ca2bc51.exe
Size 318KB
Sample250101-klzz7aspcp
SHA256 87e2472ea39ecbc181be014414641c7eff9d50af85842b3dee2296a1994a1a4d
MD5 4e84418f73d699329bca84d43ca2bc51
SHA1 59ed2e9ac35fb3526732cc5873e1a2b37df1dd52
SHA512 2d288365a5ceedd86c4e4017573d309a773dd41576aba9b2b988623cdb41d875b9057f4fe9c4ee7b2126dc2df6e324b807527fac7e0eff81fe95e06ef37cb072
SSDEEP 6144:/cNYk1yuwEDBum3qYWnl0pd0EX3Zq2b6wfIDYm0P3oUrpXcrPH:/cWkbgTYWnYnt/IDYhP3
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

darkcomet pros discovery evasion persistence rat trojan upx

Malware Config

Extracted

Family

darkcomet

Botnet

pros

axelcass.noip.me:1604

Mutex

DC_MUTEX-AVPP4NE

Attributes

InstallPath
winlogon.exe
gencode
jREpfFDXm8wo
install
true
offline_keylogger
true
persistence
true
reg_key
winlogon

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\\system32\\winlogon.exe"	JaffaCakes118_4e84418f73d699329bca84d43ca2bc51.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
3332	attrib.exe
2396	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-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	JaffaCakes118_4e84418f73d699329bca84d43ca2bc51.exe

Deletes itself 1 IoCs

pid	Process
4672	notepad.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-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winlogon = "C:\\Windows\\system32\\winlogon.exe"	JaffaCakes118_4e84418f73d699329bca84d43ca2bc51.exe

Drops file in System32 directory 3 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\winlogon.exe	JaffaCakes118_4e84418f73d699329bca84d43ca2bc51.exe
File opened for modification	C:\Windows\SysWOW64\winlogon.exe	JaffaCakes118_4e84418f73d699329bca84d43ca2bc51.exe
File opened for modification	C:\Windows\SysWOW64\	JaffaCakes118_4e84418f73d699329bca84d43ca2bc51.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3092-0-0x0000000000400000-0x00000000004D8000-memory.dmp	upx
behavioral2/files/0x000c000000023b27-7.dat	upx
behavioral2/memory/3092-62-0x0000000000400000-0x00000000004D8000-memory.dmp	upx

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 6 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	attrib.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_4e84418f73d699329bca84d43ca2bc51.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	notepad.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	cmd.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	JaffaCakes118_4e84418f73d699329bca84d43ca2bc51.exe

Suspicious use of AdjustPrivilegeToken 24 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	3092	JaffaCakes118_4e84418f73d699329bca84d43ca2bc51.exe
Token: SeSecurityPrivilege	3092	JaffaCakes118_4e84418f73d699329bca84d43ca2bc51.exe
Token: SeTakeOwnershipPrivilege	3092	JaffaCakes118_4e84418f73d699329bca84d43ca2bc51.exe
Token: SeLoadDriverPrivilege	3092	JaffaCakes118_4e84418f73d699329bca84d43ca2bc51.exe
Token: SeSystemProfilePrivilege	3092	JaffaCakes118_4e84418f73d699329bca84d43ca2bc51.exe
Token: SeSystemtimePrivilege	3092	JaffaCakes118_4e84418f73d699329bca84d43ca2bc51.exe
Token: SeProfSingleProcessPrivilege	3092	JaffaCakes118_4e84418f73d699329bca84d43ca2bc51.exe
Token: SeIncBasePriorityPrivilege	3092	JaffaCakes118_4e84418f73d699329bca84d43ca2bc51.exe
Token: SeCreatePagefilePrivilege	3092	JaffaCakes118_4e84418f73d699329bca84d43ca2bc51.exe
Token: SeBackupPrivilege	3092	JaffaCakes118_4e84418f73d699329bca84d43ca2bc51.exe
Token: SeRestorePrivilege	3092	JaffaCakes118_4e84418f73d699329bca84d43ca2bc51.exe
Token: SeShutdownPrivilege	3092	JaffaCakes118_4e84418f73d699329bca84d43ca2bc51.exe
Token: SeDebugPrivilege	3092	JaffaCakes118_4e84418f73d699329bca84d43ca2bc51.exe
Token: SeSystemEnvironmentPrivilege	3092	JaffaCakes118_4e84418f73d699329bca84d43ca2bc51.exe
Token: SeChangeNotifyPrivilege	3092	JaffaCakes118_4e84418f73d699329bca84d43ca2bc51.exe
Token: SeRemoteShutdownPrivilege	3092	JaffaCakes118_4e84418f73d699329bca84d43ca2bc51.exe
Token: SeUndockPrivilege	3092	JaffaCakes118_4e84418f73d699329bca84d43ca2bc51.exe
Token: SeManageVolumePrivilege	3092	JaffaCakes118_4e84418f73d699329bca84d43ca2bc51.exe
Token: SeImpersonatePrivilege	3092	JaffaCakes118_4e84418f73d699329bca84d43ca2bc51.exe
Token: SeCreateGlobalPrivilege	3092	JaffaCakes118_4e84418f73d699329bca84d43ca2bc51.exe
Token: 33	3092	JaffaCakes118_4e84418f73d699329bca84d43ca2bc51.exe
Token: 34	3092	JaffaCakes118_4e84418f73d699329bca84d43ca2bc51.exe
Token: 35	3092	JaffaCakes118_4e84418f73d699329bca84d43ca2bc51.exe
Token: 36	3092	JaffaCakes118_4e84418f73d699329bca84d43ca2bc51.exe

Suspicious use of WriteProcessMemory 29 IoCs

description	pid	Process	procid_target
PID 3092 wrote to memory of 4592	3092	JaffaCakes118_4e84418f73d699329bca84d43ca2bc51.exe	82
PID 3092 wrote to memory of 4592	3092	JaffaCakes118_4e84418f73d699329bca84d43ca2bc51.exe	82
PID 3092 wrote to memory of 4592	3092	JaffaCakes118_4e84418f73d699329bca84d43ca2bc51.exe	82
PID 3092 wrote to memory of 1196	3092	JaffaCakes118_4e84418f73d699329bca84d43ca2bc51.exe	83
PID 3092 wrote to memory of 1196	3092	JaffaCakes118_4e84418f73d699329bca84d43ca2bc51.exe	83
PID 3092 wrote to memory of 1196	3092	JaffaCakes118_4e84418f73d699329bca84d43ca2bc51.exe	83
PID 3092 wrote to memory of 4672	3092	JaffaCakes118_4e84418f73d699329bca84d43ca2bc51.exe	85
PID 3092 wrote to memory of 4672	3092	JaffaCakes118_4e84418f73d699329bca84d43ca2bc51.exe	85
PID 3092 wrote to memory of 4672	3092	JaffaCakes118_4e84418f73d699329bca84d43ca2bc51.exe	85
PID 3092 wrote to memory of 4672	3092	JaffaCakes118_4e84418f73d699329bca84d43ca2bc51.exe	85
PID 3092 wrote to memory of 4672	3092	JaffaCakes118_4e84418f73d699329bca84d43ca2bc51.exe	85
PID 3092 wrote to memory of 4672	3092	JaffaCakes118_4e84418f73d699329bca84d43ca2bc51.exe	85
PID 3092 wrote to memory of 4672	3092	JaffaCakes118_4e84418f73d699329bca84d43ca2bc51.exe	85
PID 3092 wrote to memory of 4672	3092	JaffaCakes118_4e84418f73d699329bca84d43ca2bc51.exe	85
PID 3092 wrote to memory of 4672	3092	JaffaCakes118_4e84418f73d699329bca84d43ca2bc51.exe	85
PID 3092 wrote to memory of 4672	3092	JaffaCakes118_4e84418f73d699329bca84d43ca2bc51.exe	85
PID 3092 wrote to memory of 4672	3092	JaffaCakes118_4e84418f73d699329bca84d43ca2bc51.exe	85
PID 3092 wrote to memory of 4672	3092	JaffaCakes118_4e84418f73d699329bca84d43ca2bc51.exe	85
PID 3092 wrote to memory of 4672	3092	JaffaCakes118_4e84418f73d699329bca84d43ca2bc51.exe	85
PID 3092 wrote to memory of 4672	3092	JaffaCakes118_4e84418f73d699329bca84d43ca2bc51.exe	85
PID 3092 wrote to memory of 4672	3092	JaffaCakes118_4e84418f73d699329bca84d43ca2bc51.exe	85
PID 3092 wrote to memory of 4672	3092	JaffaCakes118_4e84418f73d699329bca84d43ca2bc51.exe	85
PID 3092 wrote to memory of 4672	3092	JaffaCakes118_4e84418f73d699329bca84d43ca2bc51.exe	85
PID 1196 wrote to memory of 3332	1196	cmd.exe	87
PID 1196 wrote to memory of 3332	1196	cmd.exe	87
PID 1196 wrote to memory of 3332	1196	cmd.exe	87
PID 4592 wrote to memory of 2396	4592	cmd.exe	88
PID 4592 wrote to memory of 2396	4592	cmd.exe	88
PID 4592 wrote to memory of 2396	4592	cmd.exe	88

Views/modifies file attributes 1 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
3332	attrib.exe
2396	attrib.exe

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4e84418f73d699329bca84d43ca2bc51.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4e84418f73d699329bca84d43ca2bc51.exe"
1⤵
- Modifies WinLogon for persistence
- Checks computer location settings
- Adds Run key to start application
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3092
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4e84418f73d699329bca84d43ca2bc51.exe" +s +h
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4592
- - C:\Windows\SysWOW64\attrib.exe
    attrib "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4e84418f73d699329bca84d43ca2bc51.exe" +s +h
    3⤵
    - Sets file to hidden
    - System Location Discovery: System Language Discovery
    - Views/modifies file attributes
    PID:2396
- 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:1196
- - 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:3332
- C:\Windows\SysWOW64\notepad.exe
  notepad
  2⤵
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4672

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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winlogon.exe

Path C:\Windows\SysWOW64\winlogon.exe
Size 318KB
SHA256 87e2472ea39ecbc181be014414641c7eff9d50af85842b3dee2296a1994a1a4d
MD5 4e84418f73d699329bca84d43ca2bc51
SHA1 59ed2e9ac35fb3526732cc5873e1a2b37df1dd52
SHA512 2d288365a5ceedd86c4e4017573d309a773dd41576aba9b2b988623cdb41d875b9057f4fe9c4ee7b2126dc2df6e324b807527fac7e0eff81fe95e06ef37cb072
SSDEEP 6144:/cNYk1yuwEDBum3qYWnl0pd0EX3Zq2b6wfIDYm0P3oUrpXcrPH:/cWkbgTYWnYnt/IDYhP3
MD5 SHA1 SHA512 SSDEEP

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memory/3092-0-0x0000000000400000-0x00000000004D8000-memory.dmp

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memory/3092-1-0x0000000000C70000-0x0000000000C71000-memory.dmp

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memory/3092-62-0x0000000000400000-0x00000000004D8000-memory.dmp

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memory/4672-5-0x0000000000F50000-0x0000000000F51000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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