darkcomet | 9cc915ea82a527a9309653e9535e4ced6301eff2e71ac3aecdf49b541d738a13

Analysis

max time kernel
95s
max time network
123s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
18/08/2024, 14:07

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
a6f35f64108d0319467fdc39cadf4165_JaffaCakes118.exe
Size 1.1MB
Sample240818-re7vsazdnl
SHA256 9cc915ea82a527a9309653e9535e4ced6301eff2e71ac3aecdf49b541d738a13
MD5 a6f35f64108d0319467fdc39cadf4165
SHA1 d70e84ef1d616ad5ead9f754d25c304b0a0798d1
SHA512 347140c6af8b733050f6474a3905c8f2a426c3a3da88ba501194e00db015c2fdc5bc41a57d473bd553bc92e7e5acbf1ae0fa9bd48e272d5902922a8d1d627efe
SSDEEP 24576:oxPAOuSCSn3q9Gb2rRvnVODhoT1YI1vmpad:ofgRKad
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

darkcomet guest16 discovery evasion persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

ratawb.no-ip.biz:1604
ratawb.no-ip.biz:4040

Mutex

DC_MUTEX-6ZS1VB8

Attributes

InstallPath
winlogon.exe
gencode
leXkfsB6Za5G
install
true
offline_keylogger
true
persistence
true
reg_key
svchost

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:\\Windows\\system32\\winlogon.exe"	svchost.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
4628	attrib.exe
1344	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-1-5-21-2718105630-359604950-2820636825-1000\Control Panel\International\Geo\Nation	svchost.exe

Executes dropped EXE 2 IoCs

pid	Process
4532	svchost.exe
3176	winlogon.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-1-5-21-2718105630-359604950-2820636825-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\svchost = "C:\\Windows\\system32\\winlogon.exe"	svchost.exe

Drops file in System32 directory 3 IoCs

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

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4824 set thread context of 4532	4824	a6f35f64108d0319467fdc39cadf4165_JaffaCakes118.exe	85

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 7 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	winlogon.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a6f35f64108d0319467fdc39cadf4165_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	attrib.exe

Suspicious use of AdjustPrivilegeToken 25 IoCs

description	pid	Process
Token: SeDebugPrivilege	4824	a6f35f64108d0319467fdc39cadf4165_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	4532	svchost.exe
Token: SeSecurityPrivilege	4532	svchost.exe
Token: SeTakeOwnershipPrivilege	4532	svchost.exe
Token: SeLoadDriverPrivilege	4532	svchost.exe
Token: SeSystemProfilePrivilege	4532	svchost.exe
Token: SeSystemtimePrivilege	4532	svchost.exe
Token: SeProfSingleProcessPrivilege	4532	svchost.exe
Token: SeIncBasePriorityPrivilege	4532	svchost.exe
Token: SeCreatePagefilePrivilege	4532	svchost.exe
Token: SeBackupPrivilege	4532	svchost.exe
Token: SeRestorePrivilege	4532	svchost.exe
Token: SeShutdownPrivilege	4532	svchost.exe
Token: SeDebugPrivilege	4532	svchost.exe
Token: SeSystemEnvironmentPrivilege	4532	svchost.exe
Token: SeChangeNotifyPrivilege	4532	svchost.exe
Token: SeRemoteShutdownPrivilege	4532	svchost.exe
Token: SeUndockPrivilege	4532	svchost.exe
Token: SeManageVolumePrivilege	4532	svchost.exe
Token: SeImpersonatePrivilege	4532	svchost.exe
Token: SeCreateGlobalPrivilege	4532	svchost.exe
Token: 33	4532	svchost.exe
Token: 34	4532	svchost.exe
Token: 35	4532	svchost.exe
Token: 36	4532	svchost.exe

Suspicious use of WriteProcessMemory 29 IoCs

description	pid	Process	procid_target
PID 4824 wrote to memory of 4532	4824	a6f35f64108d0319467fdc39cadf4165_JaffaCakes118.exe	85
PID 4824 wrote to memory of 4532	4824	a6f35f64108d0319467fdc39cadf4165_JaffaCakes118.exe	85
PID 4824 wrote to memory of 4532	4824	a6f35f64108d0319467fdc39cadf4165_JaffaCakes118.exe	85
PID 4824 wrote to memory of 4532	4824	a6f35f64108d0319467fdc39cadf4165_JaffaCakes118.exe	85
PID 4824 wrote to memory of 4532	4824	a6f35f64108d0319467fdc39cadf4165_JaffaCakes118.exe	85
PID 4824 wrote to memory of 4532	4824	a6f35f64108d0319467fdc39cadf4165_JaffaCakes118.exe	85
PID 4824 wrote to memory of 4532	4824	a6f35f64108d0319467fdc39cadf4165_JaffaCakes118.exe	85
PID 4824 wrote to memory of 4532	4824	a6f35f64108d0319467fdc39cadf4165_JaffaCakes118.exe	85
PID 4824 wrote to memory of 4532	4824	a6f35f64108d0319467fdc39cadf4165_JaffaCakes118.exe	85
PID 4824 wrote to memory of 4532	4824	a6f35f64108d0319467fdc39cadf4165_JaffaCakes118.exe	85
PID 4824 wrote to memory of 4532	4824	a6f35f64108d0319467fdc39cadf4165_JaffaCakes118.exe	85
PID 4824 wrote to memory of 4532	4824	a6f35f64108d0319467fdc39cadf4165_JaffaCakes118.exe	85
PID 4824 wrote to memory of 4532	4824	a6f35f64108d0319467fdc39cadf4165_JaffaCakes118.exe	85
PID 4824 wrote to memory of 4532	4824	a6f35f64108d0319467fdc39cadf4165_JaffaCakes118.exe	85
PID 4532 wrote to memory of 4948	4532	svchost.exe	88
PID 4532 wrote to memory of 4948	4532	svchost.exe	88
PID 4532 wrote to memory of 4948	4532	svchost.exe	88
PID 4532 wrote to memory of 224	4532	svchost.exe	89
PID 4532 wrote to memory of 224	4532	svchost.exe	89
PID 4532 wrote to memory of 224	4532	svchost.exe	89
PID 4532 wrote to memory of 3176	4532	svchost.exe	92
PID 4532 wrote to memory of 3176	4532	svchost.exe	92
PID 4532 wrote to memory of 3176	4532	svchost.exe	92
PID 4948 wrote to memory of 4628	4948	cmd.exe	94
PID 4948 wrote to memory of 4628	4948	cmd.exe	94
PID 4948 wrote to memory of 4628	4948	cmd.exe	94
PID 224 wrote to memory of 1344	224	cmd.exe	95
PID 224 wrote to memory of 1344	224	cmd.exe	95
PID 224 wrote to memory of 1344	224	cmd.exe	95

Views/modifies file attributes 1 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
4628	attrib.exe
1344	attrib.exe

C:\Users\Admin\AppData\Local\Temp\a6f35f64108d0319467fdc39cadf4165_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\a6f35f64108d0319467fdc39cadf4165_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4824
- C:\Users\Admin\AppData\Local\Temp\svchost.exe
  C:\Users\Admin\AppData\Local\Temp\svchost.exe
  2⤵
  - Modifies WinLogon for persistence
  - Checks computer location settings
  - Executes dropped EXE
  - Adds Run key to start application
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4532
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\svchost.exe" +s +h
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4948
  - - C:\Windows\SysWOW64\attrib.exe
      attrib "C:\Users\Admin\AppData\Local\Temp\svchost.exe" +s +h
      4⤵
      Sets file to hidden
      System Location Discovery: System Language Discovery
      Views/modifies file attributes
      PID:4628
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:224
  - - C:\Windows\SysWOW64\attrib.exe
      attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
      4⤵
      Sets file to hidden
      System Location Discovery: System Language Discovery
      Views/modifies file attributes
      PID:1344
- - C:\Windows\SysWOW64\winlogon.exe
    "C:\Windows\system32\winlogon.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:3176

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

Replay Monitor

Loading Replay Monitor...

Downloads

svchost.exe

Path C:\Users\Admin\AppData\Local\Temp\svchost.exe
Size 34KB
SHA256 3a0f2936b8c45e8ba3458d69d7859a63844469e698652e15fb56639d32f40cc9
MD5 e118330b4629b12368d91b9df6488be0
SHA1 ce90218c7e3b90df2a3409ec253048bb6472c2fd
SHA512 ac91c04cb20223dbaaf594440cb778dff36e857921be427c8528ba4c6cdb3e8bf8e71e1ae8af7bde9c04ff5b97b379231625bc1a2b66aba2f98cd340cd8a94b0
SSDEEP 768:Paq4bp49YK+2Cza0pS6icHmMl9CvwOElkn3yKdn5y85p3:ud4+KTMVJHmMsEBKdn5vj
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/4532-5-0x0000000000400000-0x00000000004B0000-memory.dmp

Download

memory/4532-9-0x0000000000400000-0x00000000004B0000-memory.dmp

Download

memory/4532-12-0x0000000000400000-0x00000000004B0000-memory.dmp

Download

memory/4532-10-0x0000000000400000-0x00000000004B0000-memory.dmp

Download

memory/4532-16-0x00000000025A0000-0x00000000025A1000-memory.dmp

Download

memory/4532-26-0x0000000000400000-0x00000000004B0000-memory.dmp

Download

memory/4824-0-0x0000000074AC2000-0x0000000074AC3000-memory.dmp

Download

memory/4824-1-0x0000000074AC0000-0x0000000075071000-memory.dmp

Download

memory/4824-2-0x0000000074AC0000-0x0000000075071000-memory.dmp

Download

memory/4824-17-0x0000000074AC0000-0x0000000075071000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads