darkcomet | d040394367cf46f1ec52457594169b02254d0b005b1116ae333b90f721965272

Analysis

max time kernel
138s
max time network
132s
platform
windows7_x64
resource
win7-20230703-en
resource tags

arch:x64arch:x86image:win7-20230703-enlocale:en-usos:windows7-x64system
submitted
10/07/2023, 08:00

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General

Target

230351e5b4ee08a6583797d942967b059aec63c32eb26427f45d4ff64701b3fe.exe
Size

745KB
MD5

c0e4f49d4ea30fe8e04fdba223b44f24
SHA1

42d85163e18f35fd435b5f96a0bce10b8336b440
SHA256

230351e5b4ee08a6583797d942967b059aec63c32eb26427f45d4ff64701b3fe
SHA512

127923ce8310070ef1083b66f92ad5b7faeabb29f2540554fd833e6132d85478f55415344127760f04fe44a7ef8a0acd243d1dec5279510567a4a64777911abc
SSDEEP

12288:w8UaT9XY2siA0bMG09xD7I3Gg8ecgVvfBoCDBOQQYbVXpuy1f/gORixB:pUKoN0bUxgGa/pfBHDb+y1HgZ

Score

10^/10

darkcomet evasion persistence rat trojan

Malware Config

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

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Users\\Admin\\Documents\\MSDCSC\\darkcomet.exe"	230351e5b4ee08a6583797d942967b059aec63c32eb26427f45d4ff64701b3fe.exe

Sets file to hidden 1 TTPs 2 IoCs

Modifies file attributes to stop it showing in Explorer etc.

evasion

Hidden Files and Directories

T1158

pid	Process
2056	attrib.exe
2128	attrib.exe

Executes dropped EXE 1 IoCs

pid	Process
560	darkcomet.exe

Loads dropped DLL 2 IoCs

pid	Process
2796	230351e5b4ee08a6583797d942967b059aec63c32eb26427f45d4ff64701b3fe.exe
2796	230351e5b4ee08a6583797d942967b059aec63c32eb26427f45d4ff64701b3fe.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2859459355-424593036-1984306042-1000\Software\Microsoft\Windows\CurrentVersion\Run\DarkCometInstall = "C:\\Users\\Admin\\Documents\\MSDCSC\\darkcomet.exe"	darkcomet.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2859459355-424593036-1984306042-1000\Software\Microsoft\Windows\CurrentVersion\Run\DarkCometInstall = "C:\\Users\\Admin\\Documents\\MSDCSC\\darkcomet.exe"	230351e5b4ee08a6583797d942967b059aec63c32eb26427f45d4ff64701b3fe.exe

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

System Information Discovery
T1082

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
560	darkcomet.exe

Suspicious use of AdjustPrivilegeToken 46 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	2796	230351e5b4ee08a6583797d942967b059aec63c32eb26427f45d4ff64701b3fe.exe
Token: SeSecurityPrivilege	2796	230351e5b4ee08a6583797d942967b059aec63c32eb26427f45d4ff64701b3fe.exe
Token: SeTakeOwnershipPrivilege	2796	230351e5b4ee08a6583797d942967b059aec63c32eb26427f45d4ff64701b3fe.exe
Token: SeLoadDriverPrivilege	2796	230351e5b4ee08a6583797d942967b059aec63c32eb26427f45d4ff64701b3fe.exe
Token: SeSystemProfilePrivilege	2796	230351e5b4ee08a6583797d942967b059aec63c32eb26427f45d4ff64701b3fe.exe
Token: SeSystemtimePrivilege	2796	230351e5b4ee08a6583797d942967b059aec63c32eb26427f45d4ff64701b3fe.exe
Token: SeProfSingleProcessPrivilege	2796	230351e5b4ee08a6583797d942967b059aec63c32eb26427f45d4ff64701b3fe.exe
Token: SeIncBasePriorityPrivilege	2796	230351e5b4ee08a6583797d942967b059aec63c32eb26427f45d4ff64701b3fe.exe
Token: SeCreatePagefilePrivilege	2796	230351e5b4ee08a6583797d942967b059aec63c32eb26427f45d4ff64701b3fe.exe
Token: SeBackupPrivilege	2796	230351e5b4ee08a6583797d942967b059aec63c32eb26427f45d4ff64701b3fe.exe
Token: SeRestorePrivilege	2796	230351e5b4ee08a6583797d942967b059aec63c32eb26427f45d4ff64701b3fe.exe
Token: SeShutdownPrivilege	2796	230351e5b4ee08a6583797d942967b059aec63c32eb26427f45d4ff64701b3fe.exe
Token: SeDebugPrivilege	2796	230351e5b4ee08a6583797d942967b059aec63c32eb26427f45d4ff64701b3fe.exe
Token: SeSystemEnvironmentPrivilege	2796	230351e5b4ee08a6583797d942967b059aec63c32eb26427f45d4ff64701b3fe.exe
Token: SeChangeNotifyPrivilege	2796	230351e5b4ee08a6583797d942967b059aec63c32eb26427f45d4ff64701b3fe.exe
Token: SeRemoteShutdownPrivilege	2796	230351e5b4ee08a6583797d942967b059aec63c32eb26427f45d4ff64701b3fe.exe
Token: SeUndockPrivilege	2796	230351e5b4ee08a6583797d942967b059aec63c32eb26427f45d4ff64701b3fe.exe
Token: SeManageVolumePrivilege	2796	230351e5b4ee08a6583797d942967b059aec63c32eb26427f45d4ff64701b3fe.exe
Token: SeImpersonatePrivilege	2796	230351e5b4ee08a6583797d942967b059aec63c32eb26427f45d4ff64701b3fe.exe
Token: SeCreateGlobalPrivilege	2796	230351e5b4ee08a6583797d942967b059aec63c32eb26427f45d4ff64701b3fe.exe
Token: 33	2796	230351e5b4ee08a6583797d942967b059aec63c32eb26427f45d4ff64701b3fe.exe
Token: 34	2796	230351e5b4ee08a6583797d942967b059aec63c32eb26427f45d4ff64701b3fe.exe
Token: 35	2796	230351e5b4ee08a6583797d942967b059aec63c32eb26427f45d4ff64701b3fe.exe
Token: SeIncreaseQuotaPrivilege	560	darkcomet.exe
Token: SeSecurityPrivilege	560	darkcomet.exe
Token: SeTakeOwnershipPrivilege	560	darkcomet.exe
Token: SeLoadDriverPrivilege	560	darkcomet.exe
Token: SeSystemProfilePrivilege	560	darkcomet.exe
Token: SeSystemtimePrivilege	560	darkcomet.exe
Token: SeProfSingleProcessPrivilege	560	darkcomet.exe
Token: SeIncBasePriorityPrivilege	560	darkcomet.exe
Token: SeCreatePagefilePrivilege	560	darkcomet.exe
Token: SeBackupPrivilege	560	darkcomet.exe
Token: SeRestorePrivilege	560	darkcomet.exe
Token: SeShutdownPrivilege	560	darkcomet.exe
Token: SeDebugPrivilege	560	darkcomet.exe
Token: SeSystemEnvironmentPrivilege	560	darkcomet.exe
Token: SeChangeNotifyPrivilege	560	darkcomet.exe
Token: SeRemoteShutdownPrivilege	560	darkcomet.exe
Token: SeUndockPrivilege	560	darkcomet.exe
Token: SeManageVolumePrivilege	560	darkcomet.exe
Token: SeImpersonatePrivilege	560	darkcomet.exe
Token: SeCreateGlobalPrivilege	560	darkcomet.exe
Token: 33	560	darkcomet.exe
Token: 34	560	darkcomet.exe
Token: 35	560	darkcomet.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
560	darkcomet.exe

Suspicious use of WriteProcessMemory 28 IoCs

description	pid	Process	procid_target
PID 2796 wrote to memory of 2912	2796	230351e5b4ee08a6583797d942967b059aec63c32eb26427f45d4ff64701b3fe.exe	27
PID 2796 wrote to memory of 2912	2796	230351e5b4ee08a6583797d942967b059aec63c32eb26427f45d4ff64701b3fe.exe	27
PID 2796 wrote to memory of 2912	2796	230351e5b4ee08a6583797d942967b059aec63c32eb26427f45d4ff64701b3fe.exe	27
PID 2796 wrote to memory of 2912	2796	230351e5b4ee08a6583797d942967b059aec63c32eb26427f45d4ff64701b3fe.exe	27
PID 2796 wrote to memory of 2900	2796	230351e5b4ee08a6583797d942967b059aec63c32eb26427f45d4ff64701b3fe.exe	28
PID 2796 wrote to memory of 2900	2796	230351e5b4ee08a6583797d942967b059aec63c32eb26427f45d4ff64701b3fe.exe	28
PID 2796 wrote to memory of 2900	2796	230351e5b4ee08a6583797d942967b059aec63c32eb26427f45d4ff64701b3fe.exe	28
PID 2796 wrote to memory of 2900	2796	230351e5b4ee08a6583797d942967b059aec63c32eb26427f45d4ff64701b3fe.exe	28
PID 2912 wrote to memory of 2056	2912	cmd.exe	31
PID 2912 wrote to memory of 2056	2912	cmd.exe	31
PID 2912 wrote to memory of 2056	2912	cmd.exe	31
PID 2912 wrote to memory of 2056	2912	cmd.exe	31
PID 2796 wrote to memory of 560	2796	230351e5b4ee08a6583797d942967b059aec63c32eb26427f45d4ff64701b3fe.exe	32
PID 2796 wrote to memory of 560	2796	230351e5b4ee08a6583797d942967b059aec63c32eb26427f45d4ff64701b3fe.exe	32
PID 2796 wrote to memory of 560	2796	230351e5b4ee08a6583797d942967b059aec63c32eb26427f45d4ff64701b3fe.exe	32
PID 2796 wrote to memory of 560	2796	230351e5b4ee08a6583797d942967b059aec63c32eb26427f45d4ff64701b3fe.exe	32
PID 2900 wrote to memory of 2128	2900	cmd.exe	33
PID 2900 wrote to memory of 2128	2900	cmd.exe	33
PID 2900 wrote to memory of 2128	2900	cmd.exe	33
PID 2900 wrote to memory of 2128	2900	cmd.exe	33
PID 560 wrote to memory of 1156	560	darkcomet.exe	35
PID 560 wrote to memory of 1156	560	darkcomet.exe	35
PID 560 wrote to memory of 1156	560	darkcomet.exe	35
PID 560 wrote to memory of 1156	560	darkcomet.exe	35
PID 560 wrote to memory of 1484	560	darkcomet.exe	34
PID 560 wrote to memory of 1484	560	darkcomet.exe	34
PID 560 wrote to memory of 1484	560	darkcomet.exe	34
PID 560 wrote to memory of 1484	560	darkcomet.exe	34

Views/modifies file attributes 1 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1158

pid	Process
2056	attrib.exe
2128	attrib.exe

C:\Users\Admin\AppData\Local\Temp\230351e5b4ee08a6583797d942967b059aec63c32eb26427f45d4ff64701b3fe.exe
"C:\Users\Admin\AppData\Local\Temp\230351e5b4ee08a6583797d942967b059aec63c32eb26427f45d4ff64701b3fe.exe"
1⤵
- Modifies WinLogon for persistence
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2796
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\230351e5b4ee08a6583797d942967b059aec63c32eb26427f45d4ff64701b3fe.exe" +s +h
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2912
- - C:\Windows\SysWOW64\attrib.exe
    attrib "C:\Users\Admin\AppData\Local\Temp\230351e5b4ee08a6583797d942967b059aec63c32eb26427f45d4ff64701b3fe.exe" +s +h
    3⤵
    - Sets file to hidden
    - Views/modifies file attributes
    PID:2056
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2900
- - C:\Windows\SysWOW64\attrib.exe
    attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
    3⤵
    - Sets file to hidden
    - Views/modifies file attributes
    PID:2128
- C:\Users\Admin\Documents\MSDCSC\darkcomet.exe
  "C:\Users\Admin\Documents\MSDCSC\darkcomet.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:560
- - C:\Windows\explorer.exe
    "C:\Windows\explorer.exe"
    3⤵
    PID:1484
- - C:\Program Files (x86)\Internet Explorer\iexplore.exe
    "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
    3⤵
    PID:1156

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Hidden Files and Directories

T1158

Registry Run Keys / Startup Folder

T1060

Winlogon Helper DLL

T1004

Privilege Escalation

Defense Evasion

Hidden Files and Directories

T1158

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\Documents\MSDCSC\darkcomet.exe

Filesize
745KB

MD5
c0e4f49d4ea30fe8e04fdba223b44f24

SHA1
42d85163e18f35fd435b5f96a0bce10b8336b440

SHA256
230351e5b4ee08a6583797d942967b059aec63c32eb26427f45d4ff64701b3fe

SHA512
127923ce8310070ef1083b66f92ad5b7faeabb29f2540554fd833e6132d85478f55415344127760f04fe44a7ef8a0acd243d1dec5279510567a4a64777911abc

Download Submit
C:\Users\Admin\Documents\MSDCSC\darkcomet.exe

Filesize
745KB

MD5
c0e4f49d4ea30fe8e04fdba223b44f24

SHA1
42d85163e18f35fd435b5f96a0bce10b8336b440

SHA256
230351e5b4ee08a6583797d942967b059aec63c32eb26427f45d4ff64701b3fe

SHA512
127923ce8310070ef1083b66f92ad5b7faeabb29f2540554fd833e6132d85478f55415344127760f04fe44a7ef8a0acd243d1dec5279510567a4a64777911abc

Download Submit
C:\Users\Admin\Documents\MSDCSC\darkcomet.exe

Filesize
745KB

MD5
c0e4f49d4ea30fe8e04fdba223b44f24

SHA1
42d85163e18f35fd435b5f96a0bce10b8336b440

SHA256
230351e5b4ee08a6583797d942967b059aec63c32eb26427f45d4ff64701b3fe

SHA512
127923ce8310070ef1083b66f92ad5b7faeabb29f2540554fd833e6132d85478f55415344127760f04fe44a7ef8a0acd243d1dec5279510567a4a64777911abc

Download Submit
\Users\Admin\Documents\MSDCSC\darkcomet.exe

Filesize
745KB

MD5
c0e4f49d4ea30fe8e04fdba223b44f24

SHA1
42d85163e18f35fd435b5f96a0bce10b8336b440

SHA256
230351e5b4ee08a6583797d942967b059aec63c32eb26427f45d4ff64701b3fe

SHA512
127923ce8310070ef1083b66f92ad5b7faeabb29f2540554fd833e6132d85478f55415344127760f04fe44a7ef8a0acd243d1dec5279510567a4a64777911abc

Download Submit
\Users\Admin\Documents\MSDCSC\darkcomet.exe

Filesize
745KB

MD5
c0e4f49d4ea30fe8e04fdba223b44f24

SHA1
42d85163e18f35fd435b5f96a0bce10b8336b440

SHA256
230351e5b4ee08a6583797d942967b059aec63c32eb26427f45d4ff64701b3fe

SHA512
127923ce8310070ef1083b66f92ad5b7faeabb29f2540554fd833e6132d85478f55415344127760f04fe44a7ef8a0acd243d1dec5279510567a4a64777911abc

Download Submit
memory/560-66-0x0000000000240000-0x0000000000241000-memory.dmp

Filesize
4KB

Download
memory/560-67-0x0000000000400000-0x00000000004C7000-memory.dmp

Filesize
796KB

Download
memory/2796-63-0x0000000000400000-0x00000000004C7000-memory.dmp

Filesize
796KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads