darkcomet | 23ff4eb48f2c98a3868ee8abbfcd28427f877864759e0d84c82895b51f78e8d0

General

Target

387e8c87ac61853543b43747feff0897.exe
Size

515KB
MD5

387e8c87ac61853543b43747feff0897
SHA1

6505a260581d6d78b3c8ca0501b56e266ac25d4f
SHA256

23ff4eb48f2c98a3868ee8abbfcd28427f877864759e0d84c82895b51f78e8d0
SHA512

5451d60875562cf41bcdd703edd7a1efde19b1ed86f7a78f69a52e8d05b34b437e9704ed1c576d54e364c55a66274922f09138d220d30d675c17418967a16e29
SSDEEP

12288:wf2QkXEU9Nha3ZqyBPoMrliN/ddRAe8CT:QxeEo+LBPorzRAe7T

Score

10^/10

darkcomet dc evasion persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

DC

C2

rsguide.no-ip.biz:1604

Mutex

DC_MUTEX-9USF8JU

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
RvWB7ovy3Ji4
install
true
offline_keylogger
true
persistence
true
reg_key
rundll32

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:\\Users\\Admin\\AppData\\Local\\Temp\\MSDCSC\\msdcsc.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
2596	attrib.exe
2652	attrib.exe

Executes dropped EXE 1 IoCs

pid	Process
2396	svchost.exe

Loads dropped DLL 1 IoCs

pid	Process
1428	387e8c87ac61853543b43747feff0897.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-1-5-21-3818056530-936619650-3554021955-1000\Software\Microsoft\Windows\CurrentVersion\Run\rundll32 = "C:\\Users\\Admin\\AppData\\Local\\Temp\\MSDCSC\\msdcsc.exe"	svchost.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1428 set thread context of 2396	1428	387e8c87ac61853543b43747feff0897.exe	27

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

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 24 IoCs

description	pid	Process
Token: SeDebugPrivilege	1428	387e8c87ac61853543b43747feff0897.exe
Token: SeIncreaseQuotaPrivilege	2396	svchost.exe
Token: SeSecurityPrivilege	2396	svchost.exe
Token: SeTakeOwnershipPrivilege	2396	svchost.exe
Token: SeLoadDriverPrivilege	2396	svchost.exe
Token: SeSystemProfilePrivilege	2396	svchost.exe
Token: SeSystemtimePrivilege	2396	svchost.exe
Token: SeProfSingleProcessPrivilege	2396	svchost.exe
Token: SeIncBasePriorityPrivilege	2396	svchost.exe
Token: SeCreatePagefilePrivilege	2396	svchost.exe
Token: SeBackupPrivilege	2396	svchost.exe
Token: SeRestorePrivilege	2396	svchost.exe
Token: SeShutdownPrivilege	2396	svchost.exe
Token: SeDebugPrivilege	2396	svchost.exe
Token: SeSystemEnvironmentPrivilege	2396	svchost.exe
Token: SeChangeNotifyPrivilege	2396	svchost.exe
Token: SeRemoteShutdownPrivilege	2396	svchost.exe
Token: SeUndockPrivilege	2396	svchost.exe
Token: SeManageVolumePrivilege	2396	svchost.exe
Token: SeImpersonatePrivilege	2396	svchost.exe
Token: SeCreateGlobalPrivilege	2396	svchost.exe
Token: 33	2396	svchost.exe
Token: 34	2396	svchost.exe
Token: 35	2396	svchost.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 1428 wrote to memory of 2396	1428	387e8c87ac61853543b43747feff0897.exe	27
PID 1428 wrote to memory of 2396	1428	387e8c87ac61853543b43747feff0897.exe	27
PID 1428 wrote to memory of 2396	1428	387e8c87ac61853543b43747feff0897.exe	27
PID 1428 wrote to memory of 2396	1428	387e8c87ac61853543b43747feff0897.exe	27
PID 1428 wrote to memory of 2396	1428	387e8c87ac61853543b43747feff0897.exe	27
PID 1428 wrote to memory of 2396	1428	387e8c87ac61853543b43747feff0897.exe	27
PID 1428 wrote to memory of 2396	1428	387e8c87ac61853543b43747feff0897.exe	27
PID 1428 wrote to memory of 2396	1428	387e8c87ac61853543b43747feff0897.exe	27
PID 1428 wrote to memory of 2396	1428	387e8c87ac61853543b43747feff0897.exe	27
PID 1428 wrote to memory of 2396	1428	387e8c87ac61853543b43747feff0897.exe	27
PID 1428 wrote to memory of 2396	1428	387e8c87ac61853543b43747feff0897.exe	27
PID 1428 wrote to memory of 2396	1428	387e8c87ac61853543b43747feff0897.exe	27
PID 1428 wrote to memory of 2396	1428	387e8c87ac61853543b43747feff0897.exe	27

Views/modifies file attributes 1 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2652	attrib.exe
2596	attrib.exe

C:\Users\Admin\AppData\Local\Temp\387e8c87ac61853543b43747feff0897.exe
"C:\Users\Admin\AppData\Local\Temp\387e8c87ac61853543b43747feff0897.exe"
1⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1428
- C:\Users\Admin\AppData\Local\Temp\RSbot.exe
  "C:\Users\Admin\AppData\Local\Temp\RSbot.exe"
  2⤵
  PID:2756
- - C:\Users\Admin\AppData\Roaming\Microsoft\WinUpdater.exe
    "C:\Users\Admin\AppData\Roaming\Microsoft\WinUpdater.exe"
    3⤵
    PID:1704
- C:\Users\Admin\AppData\Local\Temp\svchost.exe
  C:\Users\Admin\AppData\Local\Temp\svchost.exe
  2⤵
  - Modifies WinLogon for persistence
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of AdjustPrivilegeToken
  PID:2396
- C:\Windows\SysWOW64\WScript.exe
  "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\j.vbs"
  2⤵
  PID:1856

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
1⤵
- Sets file to hidden
- Views/modifies file attributes
PID:2596

C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
"C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe"
1⤵
PID:2628

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp\svchost.exe" +s +h
1⤵
- Sets file to hidden
- Views/modifies file attributes
PID:2652

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
1⤵
PID:2632

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\svchost.exe" +s +h
1⤵
PID:2760

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1428-2-0x0000000000590000-0x00000000005D0000-memory.dmp

Filesize
256KB

Download
memory/1428-1-0x0000000074950000-0x0000000074EFB000-memory.dmp

Filesize
5.7MB

Download
memory/1428-0-0x0000000074950000-0x0000000074EFB000-memory.dmp

Filesize
5.7MB

Download
memory/1428-3-0x0000000000590000-0x00000000005D0000-memory.dmp

Filesize
256KB

Download
memory/1428-58-0x0000000074950000-0x0000000074EFB000-memory.dmp

Filesize
5.7MB

Download
memory/1428-60-0x0000000000590000-0x00000000005D0000-memory.dmp

Filesize
256KB

Download
memory/1428-42-0x0000000000590000-0x00000000005D0000-memory.dmp

Filesize
256KB

Download
memory/1428-67-0x0000000074950000-0x0000000074EFB000-memory.dmp

Filesize
5.7MB

Download
memory/1704-70-0x000007FEF5CA0000-0x000007FEF663D000-memory.dmp

Filesize
9.6MB

Download
memory/1704-68-0x0000000000AA0000-0x0000000000B20000-memory.dmp

Filesize
512KB

Download
memory/1704-71-0x0000000000AA0000-0x0000000000B20000-memory.dmp

Filesize
512KB

Download
memory/1704-72-0x000007FEF5CA0000-0x000007FEF663D000-memory.dmp

Filesize
9.6MB

Download
memory/1704-56-0x000007FEF5CA0000-0x000007FEF663D000-memory.dmp

Filesize
9.6MB

Download
memory/1704-73-0x0000000000AA0000-0x0000000000B20000-memory.dmp

Filesize
512KB

Download
memory/1704-59-0x000007FEF5CA0000-0x000007FEF663D000-memory.dmp

Filesize
9.6MB

Download
memory/1704-57-0x0000000000AA0000-0x0000000000B20000-memory.dmp

Filesize
512KB

Download
memory/2396-18-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2396-28-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2396-14-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2396-12-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2396-10-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2396-8-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2396-20-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2396-22-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2396-24-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2396-16-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2396-11-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2396-52-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2396-29-0x0000000000270000-0x0000000000271000-memory.dmp

Filesize
4KB

Download
memory/2396-26-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2756-47-0x000007FEF5CA0000-0x000007FEF663D000-memory.dmp

Filesize
9.6MB

Download
memory/2756-45-0x000007FEF5CA0000-0x000007FEF663D000-memory.dmp

Filesize
9.6MB

Download
memory/2756-43-0x0000000000980000-0x0000000000A00000-memory.dmp

Filesize
512KB

Download
memory/2756-55-0x000007FEF5CA0000-0x000007FEF663D000-memory.dmp

Filesize
9.6MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads