darkcomet | 382b933ad1424dd06b56ddc316bf53caa3873e11d0d6f345babf8060419f50f7

General

Target

382b933ad1424dd06b56ddc316bf53caa3873e11d0d6f345babf8060419f50f7.exe
Size

711KB
MD5

fcb118e3ee27ad7312eea77522dae022
SHA1

c0bc2d726ca7455f2a93ea604d04f429a45d8b64
SHA256

382b933ad1424dd06b56ddc316bf53caa3873e11d0d6f345babf8060419f50f7
SHA512

b0aaba3ed1773e1adfc8b50a2c0f9ade5bb5f606fea40081810d822dd174cb62ac67a6d73b43a25eb74938298b2e7fdf8f27ccdbb7b90c8bf63db36fa4b6405f
SSDEEP

12288:U4w9HFJ9rJxRX1uVVjoaWSoynxdO1FVBaOiRZTERfIhNkNCCLo9Ek5C/h:UNZ1xuVVjfFoynPaVBUR8f+kN10EB

Score

10^/10

darkcomet idm trial evasion persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

IDM Trial

C2

kaz.uk.to:1604

kfull500.ddns.net:1604

Mutex

DC_MUTEX-CXHTKCF

Attributes

InstallPath
svchost.scr
gencode
cykkmaBsLzRA
install
true
offline_keylogger
true
persistence
true
reg_key
msua

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

T1004

Modify Registry

T1112

Processes:

5.EXE

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Windows\\system32\\svchost.scr"	5.EXE

Modifies security service 2 TTPs 1 IoCs
evasion

Modify Registry
T1112

Modify Existing Service
T1031

Processes:

svchost.scr

description ioc process

Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\wscsvc\Start = "4" svchost.scr

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\wscsvc\Start = "4"	svchost.scr

Windows security bypass 2 TTPs 2 IoCs

evasion trojan

Disabling Security Tools

T1089

Modify Registry

T1112

Processes:

svchost.scr

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	svchost.scr
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	svchost.scr

Executes dropped EXE 2 IoCs

Processes:

5.EXEsvchost.scr

pid process

4980 5.EXE
4856 svchost.scr
Sets file to hidden 1 TTPs 2 IoCs
Modifies file attributes to stop it showing in Explorer etc.
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exeattrib.exe

pid process

1520 attrib.exe
4068 attrib.exe

pid	process
4980	5.EXE
4856	svchost.scr

pid	process
1520	attrib.exe
4068	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

Processes:

382b933ad1424dd06b56ddc316bf53caa3873e11d0d6f345babf8060419f50f7.exe5.EXE

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation	382b933ad1424dd06b56ddc316bf53caa3873e11d0d6f345babf8060419f50f7.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation	5.EXE

Windows security modification 2 TTPs 2 IoCs

evasion trojan

Disabling Security Tools

T1089

Modify Registry

T1112

Processes:

svchost.scr

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	svchost.scr
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	svchost.scr

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

5.EXEsvchost.scr

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\msua = "C:\\Windows\\system32\\svchost.scr"	5.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\msua = "C:\\Windows\\system32\\svchost.scr"	svchost.scr

Drops file in System32 directory 3 IoCs

Processes:

5.EXE

description	ioc	process
File opened for modification	C:\Windows\SysWOW64\	5.EXE
File created	C:\Windows\SysWOW64\svchost.scr	5.EXE
File opened for modification	C:\Windows\SysWOW64\svchost.scr	5.EXE

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

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 48 IoCs

Processes:

5.EXEsvchost.scr

description	pid	process
Token: SeIncreaseQuotaPrivilege	4980	5.EXE
Token: SeSecurityPrivilege	4980	5.EXE
Token: SeTakeOwnershipPrivilege	4980	5.EXE
Token: SeLoadDriverPrivilege	4980	5.EXE
Token: SeSystemProfilePrivilege	4980	5.EXE
Token: SeSystemtimePrivilege	4980	5.EXE
Token: SeProfSingleProcessPrivilege	4980	5.EXE
Token: SeIncBasePriorityPrivilege	4980	5.EXE
Token: SeCreatePagefilePrivilege	4980	5.EXE
Token: SeBackupPrivilege	4980	5.EXE
Token: SeRestorePrivilege	4980	5.EXE
Token: SeShutdownPrivilege	4980	5.EXE
Token: SeDebugPrivilege	4980	5.EXE
Token: SeSystemEnvironmentPrivilege	4980	5.EXE
Token: SeChangeNotifyPrivilege	4980	5.EXE
Token: SeRemoteShutdownPrivilege	4980	5.EXE
Token: SeUndockPrivilege	4980	5.EXE
Token: SeManageVolumePrivilege	4980	5.EXE
Token: SeImpersonatePrivilege	4980	5.EXE
Token: SeCreateGlobalPrivilege	4980	5.EXE
Token: 33	4980	5.EXE
Token: 34	4980	5.EXE
Token: 35	4980	5.EXE
Token: 36	4980	5.EXE
Token: SeIncreaseQuotaPrivilege	4856	svchost.scr
Token: SeSecurityPrivilege	4856	svchost.scr
Token: SeTakeOwnershipPrivilege	4856	svchost.scr
Token: SeLoadDriverPrivilege	4856	svchost.scr
Token: SeSystemProfilePrivilege	4856	svchost.scr
Token: SeSystemtimePrivilege	4856	svchost.scr
Token: SeProfSingleProcessPrivilege	4856	svchost.scr
Token: SeIncBasePriorityPrivilege	4856	svchost.scr
Token: SeCreatePagefilePrivilege	4856	svchost.scr
Token: SeBackupPrivilege	4856	svchost.scr
Token: SeRestorePrivilege	4856	svchost.scr
Token: SeShutdownPrivilege	4856	svchost.scr
Token: SeDebugPrivilege	4856	svchost.scr
Token: SeSystemEnvironmentPrivilege	4856	svchost.scr
Token: SeChangeNotifyPrivilege	4856	svchost.scr
Token: SeRemoteShutdownPrivilege	4856	svchost.scr
Token: SeUndockPrivilege	4856	svchost.scr
Token: SeManageVolumePrivilege	4856	svchost.scr
Token: SeImpersonatePrivilege	4856	svchost.scr
Token: SeCreateGlobalPrivilege	4856	svchost.scr
Token: 33	4856	svchost.scr
Token: 34	4856	svchost.scr
Token: 35	4856	svchost.scr
Token: 36	4856	svchost.scr

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

svchost.scr

pid process

4856 svchost.scr

pid	process
4856	svchost.scr

Suspicious use of WriteProcessMemory 40 IoCs

Processes:

382b933ad1424dd06b56ddc316bf53caa3873e11d0d6f345babf8060419f50f7.exe5.EXEcmd.exesvchost.scrcmd.exe

description	pid	process	target process
PID 2420 wrote to memory of 4980	2420	382b933ad1424dd06b56ddc316bf53caa3873e11d0d6f345babf8060419f50f7.exe	5.EXE
PID 2420 wrote to memory of 4980	2420	382b933ad1424dd06b56ddc316bf53caa3873e11d0d6f345babf8060419f50f7.exe	5.EXE
PID 2420 wrote to memory of 4980	2420	382b933ad1424dd06b56ddc316bf53caa3873e11d0d6f345babf8060419f50f7.exe	5.EXE
PID 4980 wrote to memory of 4948	4980	5.EXE	cmd.exe
PID 4980 wrote to memory of 4948	4980	5.EXE	cmd.exe
PID 4980 wrote to memory of 4948	4980	5.EXE	cmd.exe
PID 4980 wrote to memory of 4892	4980	5.EXE	cmd.exe
PID 4980 wrote to memory of 4892	4980	5.EXE	cmd.exe
PID 4980 wrote to memory of 4892	4980	5.EXE	cmd.exe
PID 4980 wrote to memory of 4856	4980	5.EXE	svchost.scr
PID 4980 wrote to memory of 4856	4980	5.EXE	svchost.scr
PID 4980 wrote to memory of 4856	4980	5.EXE	svchost.scr
PID 4948 wrote to memory of 4068	4948	cmd.exe	attrib.exe
PID 4948 wrote to memory of 4068	4948	cmd.exe	attrib.exe
PID 4948 wrote to memory of 4068	4948	cmd.exe	attrib.exe
PID 4856 wrote to memory of 628	4856	svchost.scr	notepad.exe
PID 4856 wrote to memory of 628	4856	svchost.scr	notepad.exe
PID 4856 wrote to memory of 628	4856	svchost.scr	notepad.exe
PID 4892 wrote to memory of 1520	4892	cmd.exe	attrib.exe
PID 4892 wrote to memory of 1520	4892	cmd.exe	attrib.exe
PID 4892 wrote to memory of 1520	4892	cmd.exe	attrib.exe
PID 4856 wrote to memory of 628	4856	svchost.scr	notepad.exe
PID 4856 wrote to memory of 628	4856	svchost.scr	notepad.exe
PID 4856 wrote to memory of 628	4856	svchost.scr	notepad.exe
PID 4856 wrote to memory of 628	4856	svchost.scr	notepad.exe
PID 4856 wrote to memory of 628	4856	svchost.scr	notepad.exe
PID 4856 wrote to memory of 628	4856	svchost.scr	notepad.exe
PID 4856 wrote to memory of 628	4856	svchost.scr	notepad.exe
PID 4856 wrote to memory of 628	4856	svchost.scr	notepad.exe
PID 4856 wrote to memory of 628	4856	svchost.scr	notepad.exe
PID 4856 wrote to memory of 628	4856	svchost.scr	notepad.exe
PID 4856 wrote to memory of 628	4856	svchost.scr	notepad.exe
PID 4856 wrote to memory of 628	4856	svchost.scr	notepad.exe
PID 4856 wrote to memory of 628	4856	svchost.scr	notepad.exe
PID 4856 wrote to memory of 628	4856	svchost.scr	notepad.exe
PID 4856 wrote to memory of 628	4856	svchost.scr	notepad.exe
PID 4856 wrote to memory of 628	4856	svchost.scr	notepad.exe
PID 4856 wrote to memory of 628	4856	svchost.scr	notepad.exe
PID 4856 wrote to memory of 628	4856	svchost.scr	notepad.exe
PID 4856 wrote to memory of 628	4856	svchost.scr	notepad.exe

Views/modifies file attributes 1 TTPs 2 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exeattrib.exe

pid process

1520 attrib.exe
4068 attrib.exe

pid	process
1520	attrib.exe
4068	attrib.exe

C:\Users\Admin\AppData\Local\Temp\382b933ad1424dd06b56ddc316bf53caa3873e11d0d6f345babf8060419f50f7.exe
"C:\Users\Admin\AppData\Local\Temp\382b933ad1424dd06b56ddc316bf53caa3873e11d0d6f345babf8060419f50f7.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2420
- C:\Users\Admin\AppData\Local\Temp\5.EXE
  "C:\Users\Admin\AppData\Local\Temp\5.EXE"
  2⤵
  - Modifies WinLogon for persistence
  - Executes dropped EXE
  - Checks computer location settings
  - Adds Run key to start application
  - Drops file in System32 directory
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4980
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\5.EXE" +s +h
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:4948
  - - C:\Windows\SysWOW64\attrib.exe
      attrib "C:\Users\Admin\AppData\Local\Temp\5.EXE" +s +h
      4⤵
      Sets file to hidden
      Views/modifies file attributes
      PID:4068
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:4892
  - - C:\Windows\SysWOW64\attrib.exe
      attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
      4⤵
      Sets file to hidden
      Views/modifies file attributes
      PID:1520
- - C:\Windows\SysWOW64\svchost.scr
    "C:\Windows\system32\svchost.scr" /S
    3⤵
    - Modifies security service
    - Windows security bypass
    - Executes dropped EXE
    - Windows security modification
    - Adds Run key to start application
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:4856
  - - C:\Windows\SysWOW64\notepad.exe
      notepad
      4⤵
      PID:628

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Hidden Files and Directories

2

T1158

Modify Existing Service

1

T1031

Registry Run Keys / Startup Folder

Winlogon Helper DLL

Privilege Escalation

Defense Evasion

Disabling Security Tools

2

T1089

Hidden Files and Directories

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\5.EXE

Filesize
658KB

MD5
b595d1eefdb42effc024c6fb18643d9b

SHA1
fd0da9860f715bdff54a56954cb785dc3132f9a5

SHA256
88e41aa276e6a376c89fe1e25183d52d64c4a5e85839ac7f0cdb08e0c6cbf117

SHA512
55825004f0bd6bd67d6aeb3716f6010d49c964ad6dc1f34aeff65eb021e29f26dc677b4c6158bafde84d8ac77902a26099e9afa9cbe90e6299c1c22526e79170

Download Submit
C:\Users\Admin\AppData\Local\Temp\5.EXE

Filesize
658KB

MD5
b595d1eefdb42effc024c6fb18643d9b

SHA1
fd0da9860f715bdff54a56954cb785dc3132f9a5

SHA256
88e41aa276e6a376c89fe1e25183d52d64c4a5e85839ac7f0cdb08e0c6cbf117

SHA512
55825004f0bd6bd67d6aeb3716f6010d49c964ad6dc1f34aeff65eb021e29f26dc677b4c6158bafde84d8ac77902a26099e9afa9cbe90e6299c1c22526e79170

Download Submit
C:\Windows\SysWOW64\svchost.scr

Filesize
658KB

MD5
b595d1eefdb42effc024c6fb18643d9b

SHA1
fd0da9860f715bdff54a56954cb785dc3132f9a5

SHA256
88e41aa276e6a376c89fe1e25183d52d64c4a5e85839ac7f0cdb08e0c6cbf117

SHA512
55825004f0bd6bd67d6aeb3716f6010d49c964ad6dc1f34aeff65eb021e29f26dc677b4c6158bafde84d8ac77902a26099e9afa9cbe90e6299c1c22526e79170

Download Submit
C:\Windows\SysWOW64\svchost.scr

Filesize
658KB

MD5
b595d1eefdb42effc024c6fb18643d9b

SHA1
fd0da9860f715bdff54a56954cb785dc3132f9a5

SHA256
88e41aa276e6a376c89fe1e25183d52d64c4a5e85839ac7f0cdb08e0c6cbf117

SHA512
55825004f0bd6bd67d6aeb3716f6010d49c964ad6dc1f34aeff65eb021e29f26dc677b4c6158bafde84d8ac77902a26099e9afa9cbe90e6299c1c22526e79170

Download Submit
memory/628-141-0x0000000000000000-mapping.dmp

Download
memory/1520-142-0x0000000000000000-mapping.dmp

Download
memory/4068-140-0x0000000000000000-mapping.dmp

Download
memory/4856-137-0x0000000000000000-mapping.dmp

Download
memory/4892-136-0x0000000000000000-mapping.dmp

Download
memory/4948-135-0x0000000000000000-mapping.dmp

Download
memory/4980-132-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads