darkcomet | 3d507d03c3552c5b4ebe1fd7244f0835331b40518ca3ee4c6b6416826fc83ad4

General

Target

file.0x3fab4450.0x8532f420.ImageSectionObject.svchosts.exed40fae8da0c156fbab0f.exe
Size

661KB
MD5

3b56482d3695ab53ff888251a399a298
SHA1

726167c6f628a2a5c91b9a6db49f7f6845a2e028
SHA256

3d507d03c3552c5b4ebe1fd7244f0835331b40518ca3ee4c6b6416826fc83ad4
SHA512

a55564954549d9aaaa74b194c8efa3ea2b19d87fdf75eb1e00d62aa92361663774cb859e10f744c9505677ae939d9a5d894d24923a891ba3774b8a68c9e95a53
SSDEEP

6144:A9oQO8gPOJ9ro8xqX1us6VrpGVvJWScB6LTvXIcIDH45vRc75HzZ5FpgmxQvkNS8:A9HFJ9rJxqX1usonS+LBHARgwkNS5

Score

10^/10

darkcomet discovery evasion persistence rat trojan

Malware Config

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

Processes:

file.0x3fab4450.0x8532f420.ImageSectionObject.svchosts.exed40fae8da0c156fbab0f.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Users\\Admin\\AppData\\Local\\Temp\\MSDCSC\\runddl32.exe"	file.0x3fab4450.0x8532f420.ImageSectionObject.svchosts.exed40fae8da0c156fbab0f.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

Processes:

attrib.exeattrib.exe

pid process

2224 attrib.exe
2724 attrib.exe
Executes dropped EXE 1 IoCs

Processes:

runddl32.exe

pid process

2768 runddl32.exe

pid	process
2224	attrib.exe
2724	attrib.exe

pid	process
2768	runddl32.exe

Loads dropped DLL 9 IoCs

Processes:

file.0x3fab4450.0x8532f420.ImageSectionObject.svchosts.exed40fae8da0c156fbab0f.exeWerFault.exe

pid	process
588	file.0x3fab4450.0x8532f420.ImageSectionObject.svchosts.exed40fae8da0c156fbab0f.exe
588	file.0x3fab4450.0x8532f420.ImageSectionObject.svchosts.exed40fae8da0c156fbab0f.exe
2932	WerFault.exe
2932	WerFault.exe
2932	WerFault.exe
2932	WerFault.exe
2932	WerFault.exe
2932	WerFault.exe
2932	WerFault.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

file.0x3fab4450.0x8532f420.ImageSectionObject.svchosts.exed40fae8da0c156fbab0f.exerunddl32.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\AppData\\Local\\Temp\\MSDCSC\\runddl32.exe"	file.0x3fab4450.0x8532f420.ImageSectionObject.svchosts.exed40fae8da0c156fbab0f.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\AppData\\Local\\Temp\\MSDCSC\\runddl32.exe"	runddl32.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

2932 2768 WerFault.exe runddl32.exe

pid	pid_target	process	target process
2932	2768	WerFault.exe	runddl32.exe

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

Processes:

runddl32.exefile.0x3fab4450.0x8532f420.ImageSectionObject.svchosts.exed40fae8da0c156fbab0f.execmd.execmd.exeattrib.exeattrib.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	runddl32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	file.0x3fab4450.0x8532f420.ImageSectionObject.svchosts.exed40fae8da0c156fbab0f.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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	attrib.exe

Suspicious use of AdjustPrivilegeToken 46 IoCs

Processes:

file.0x3fab4450.0x8532f420.ImageSectionObject.svchosts.exed40fae8da0c156fbab0f.exerunddl32.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	588	file.0x3fab4450.0x8532f420.ImageSectionObject.svchosts.exed40fae8da0c156fbab0f.exe
Token: SeSecurityPrivilege	588	file.0x3fab4450.0x8532f420.ImageSectionObject.svchosts.exed40fae8da0c156fbab0f.exe
Token: SeTakeOwnershipPrivilege	588	file.0x3fab4450.0x8532f420.ImageSectionObject.svchosts.exed40fae8da0c156fbab0f.exe
Token: SeLoadDriverPrivilege	588	file.0x3fab4450.0x8532f420.ImageSectionObject.svchosts.exed40fae8da0c156fbab0f.exe
Token: SeSystemProfilePrivilege	588	file.0x3fab4450.0x8532f420.ImageSectionObject.svchosts.exed40fae8da0c156fbab0f.exe
Token: SeSystemtimePrivilege	588	file.0x3fab4450.0x8532f420.ImageSectionObject.svchosts.exed40fae8da0c156fbab0f.exe
Token: SeProfSingleProcessPrivilege	588	file.0x3fab4450.0x8532f420.ImageSectionObject.svchosts.exed40fae8da0c156fbab0f.exe
Token: SeIncBasePriorityPrivilege	588	file.0x3fab4450.0x8532f420.ImageSectionObject.svchosts.exed40fae8da0c156fbab0f.exe
Token: SeCreatePagefilePrivilege	588	file.0x3fab4450.0x8532f420.ImageSectionObject.svchosts.exed40fae8da0c156fbab0f.exe
Token: SeBackupPrivilege	588	file.0x3fab4450.0x8532f420.ImageSectionObject.svchosts.exed40fae8da0c156fbab0f.exe
Token: SeRestorePrivilege	588	file.0x3fab4450.0x8532f420.ImageSectionObject.svchosts.exed40fae8da0c156fbab0f.exe
Token: SeShutdownPrivilege	588	file.0x3fab4450.0x8532f420.ImageSectionObject.svchosts.exed40fae8da0c156fbab0f.exe
Token: SeDebugPrivilege	588	file.0x3fab4450.0x8532f420.ImageSectionObject.svchosts.exed40fae8da0c156fbab0f.exe
Token: SeSystemEnvironmentPrivilege	588	file.0x3fab4450.0x8532f420.ImageSectionObject.svchosts.exed40fae8da0c156fbab0f.exe
Token: SeChangeNotifyPrivilege	588	file.0x3fab4450.0x8532f420.ImageSectionObject.svchosts.exed40fae8da0c156fbab0f.exe
Token: SeRemoteShutdownPrivilege	588	file.0x3fab4450.0x8532f420.ImageSectionObject.svchosts.exed40fae8da0c156fbab0f.exe
Token: SeUndockPrivilege	588	file.0x3fab4450.0x8532f420.ImageSectionObject.svchosts.exed40fae8da0c156fbab0f.exe
Token: SeManageVolumePrivilege	588	file.0x3fab4450.0x8532f420.ImageSectionObject.svchosts.exed40fae8da0c156fbab0f.exe
Token: SeImpersonatePrivilege	588	file.0x3fab4450.0x8532f420.ImageSectionObject.svchosts.exed40fae8da0c156fbab0f.exe
Token: SeCreateGlobalPrivilege	588	file.0x3fab4450.0x8532f420.ImageSectionObject.svchosts.exed40fae8da0c156fbab0f.exe
Token: 33	588	file.0x3fab4450.0x8532f420.ImageSectionObject.svchosts.exed40fae8da0c156fbab0f.exe
Token: 34	588	file.0x3fab4450.0x8532f420.ImageSectionObject.svchosts.exed40fae8da0c156fbab0f.exe
Token: 35	588	file.0x3fab4450.0x8532f420.ImageSectionObject.svchosts.exed40fae8da0c156fbab0f.exe
Token: SeIncreaseQuotaPrivilege	2768	runddl32.exe
Token: SeSecurityPrivilege	2768	runddl32.exe
Token: SeTakeOwnershipPrivilege	2768	runddl32.exe
Token: SeLoadDriverPrivilege	2768	runddl32.exe
Token: SeSystemProfilePrivilege	2768	runddl32.exe
Token: SeSystemtimePrivilege	2768	runddl32.exe
Token: SeProfSingleProcessPrivilege	2768	runddl32.exe
Token: SeIncBasePriorityPrivilege	2768	runddl32.exe
Token: SeCreatePagefilePrivilege	2768	runddl32.exe
Token: SeBackupPrivilege	2768	runddl32.exe
Token: SeRestorePrivilege	2768	runddl32.exe
Token: SeShutdownPrivilege	2768	runddl32.exe
Token: SeDebugPrivilege	2768	runddl32.exe
Token: SeSystemEnvironmentPrivilege	2768	runddl32.exe
Token: SeChangeNotifyPrivilege	2768	runddl32.exe
Token: SeRemoteShutdownPrivilege	2768	runddl32.exe
Token: SeUndockPrivilege	2768	runddl32.exe
Token: SeManageVolumePrivilege	2768	runddl32.exe
Token: SeImpersonatePrivilege	2768	runddl32.exe
Token: SeCreateGlobalPrivilege	2768	runddl32.exe
Token: 33	2768	runddl32.exe
Token: 34	2768	runddl32.exe
Token: 35	2768	runddl32.exe

Suspicious use of WriteProcessMemory 24 IoCs

Processes:

file.0x3fab4450.0x8532f420.ImageSectionObject.svchosts.exed40fae8da0c156fbab0f.execmd.execmd.exerunddl32.exe

description	pid	process	target process
PID 588 wrote to memory of 1192	588	file.0x3fab4450.0x8532f420.ImageSectionObject.svchosts.exed40fae8da0c156fbab0f.exe	cmd.exe
PID 588 wrote to memory of 1192	588	file.0x3fab4450.0x8532f420.ImageSectionObject.svchosts.exed40fae8da0c156fbab0f.exe	cmd.exe
PID 588 wrote to memory of 1192	588	file.0x3fab4450.0x8532f420.ImageSectionObject.svchosts.exed40fae8da0c156fbab0f.exe	cmd.exe
PID 588 wrote to memory of 1192	588	file.0x3fab4450.0x8532f420.ImageSectionObject.svchosts.exed40fae8da0c156fbab0f.exe	cmd.exe
PID 588 wrote to memory of 2940	588	file.0x3fab4450.0x8532f420.ImageSectionObject.svchosts.exed40fae8da0c156fbab0f.exe	cmd.exe
PID 588 wrote to memory of 2940	588	file.0x3fab4450.0x8532f420.ImageSectionObject.svchosts.exed40fae8da0c156fbab0f.exe	cmd.exe
PID 588 wrote to memory of 2940	588	file.0x3fab4450.0x8532f420.ImageSectionObject.svchosts.exed40fae8da0c156fbab0f.exe	cmd.exe
PID 588 wrote to memory of 2940	588	file.0x3fab4450.0x8532f420.ImageSectionObject.svchosts.exed40fae8da0c156fbab0f.exe	cmd.exe
PID 1192 wrote to memory of 2224	1192	cmd.exe	attrib.exe
PID 1192 wrote to memory of 2224	1192	cmd.exe	attrib.exe
PID 1192 wrote to memory of 2224	1192	cmd.exe	attrib.exe
PID 1192 wrote to memory of 2224	1192	cmd.exe	attrib.exe
PID 2940 wrote to memory of 2724	2940	cmd.exe	attrib.exe
PID 2940 wrote to memory of 2724	2940	cmd.exe	attrib.exe
PID 2940 wrote to memory of 2724	2940	cmd.exe	attrib.exe
PID 2940 wrote to memory of 2724	2940	cmd.exe	attrib.exe
PID 588 wrote to memory of 2768	588	file.0x3fab4450.0x8532f420.ImageSectionObject.svchosts.exed40fae8da0c156fbab0f.exe	runddl32.exe
PID 588 wrote to memory of 2768	588	file.0x3fab4450.0x8532f420.ImageSectionObject.svchosts.exed40fae8da0c156fbab0f.exe	runddl32.exe
PID 588 wrote to memory of 2768	588	file.0x3fab4450.0x8532f420.ImageSectionObject.svchosts.exed40fae8da0c156fbab0f.exe	runddl32.exe
PID 588 wrote to memory of 2768	588	file.0x3fab4450.0x8532f420.ImageSectionObject.svchosts.exed40fae8da0c156fbab0f.exe	runddl32.exe
PID 2768 wrote to memory of 2932	2768	runddl32.exe	WerFault.exe
PID 2768 wrote to memory of 2932	2768	runddl32.exe	WerFault.exe
PID 2768 wrote to memory of 2932	2768	runddl32.exe	WerFault.exe
PID 2768 wrote to memory of 2932	2768	runddl32.exe	WerFault.exe

Views/modifies file attributes 1 TTPs 2 IoCs
evasion

Hidden Files and Directories
T1564.001

Processes:

attrib.exeattrib.exe

pid process

2224 attrib.exe
2724 attrib.exe

pid	process
2224	attrib.exe
2724	attrib.exe

C:\Users\Admin\AppData\Local\Temp\file.0x3fab4450.0x8532f420.ImageSectionObject.svchosts.exed40fae8da0c156fbab0f.exe
"C:\Users\Admin\AppData\Local\Temp\file.0x3fab4450.0x8532f420.ImageSectionObject.svchosts.exed40fae8da0c156fbab0f.exe"
1⤵
- Modifies WinLogon for persistence
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:588
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\file.0x3fab4450.0x8532f420.ImageSectionObject.svchosts.exed40fae8da0c156fbab0f.exe" +s +h
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1192
- - C:\Windows\SysWOW64\attrib.exe
    attrib "C:\Users\Admin\AppData\Local\Temp\file.0x3fab4450.0x8532f420.ImageSectionObject.svchosts.exed40fae8da0c156fbab0f.exe" +s +h
    3⤵
    - Sets file to hidden
    - System Location Discovery: System Language Discovery
    - Views/modifies file attributes
    PID:2224
- 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:2940
- - 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:2724
- C:\Users\Admin\AppData\Local\Temp\MSDCSC\runddl32.exe
  "C:\Users\Admin\AppData\Local\Temp\MSDCSC\runddl32.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2768
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2768 -s 428
    3⤵
    - Loads dropped DLL
    - Program crash
    PID:2932

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

2

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Winlogon Helper DLL

1

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

2

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Winlogon Helper DLL

1

T1547.004

Defense Evasion

Hide Artifacts

2

T1564

Hidden Files and Directories

Modify Registry

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

\Users\Admin\AppData\Local\Temp\MSDCSC\runddl32.exe

Filesize
661KB

MD5
3b56482d3695ab53ff888251a399a298

SHA1
726167c6f628a2a5c91b9a6db49f7f6845a2e028

SHA256
3d507d03c3552c5b4ebe1fd7244f0835331b40518ca3ee4c6b6416826fc83ad4

SHA512
a55564954549d9aaaa74b194c8efa3ea2b19d87fdf75eb1e00d62aa92361663774cb859e10f744c9505677ae939d9a5d894d24923a891ba3774b8a68c9e95a53

Download Submit
memory/588-0-0x00000000002C0000-0x00000000002C1000-memory.dmp

Filesize
4KB

Download
memory/588-20-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2768-21-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2768-22-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads