darkcomet | 458421dae4cac123f73a4d90a3b42f8423a8aa8018045371f94c4f059d3b918d

Analysis

max time kernel
119s
max time network
158s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
30/10/2022, 19:28

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General

Target

458421dae4cac123f73a4d90a3b42f8423a8aa8018045371f94c4f059d3b918d.exe
Size

658KB
MD5

81dd3e642183505a216cb92fee3a44a0
SHA1

5df216d391f07aee61d8fc5a8eb23030e0dea06d
SHA256

458421dae4cac123f73a4d90a3b42f8423a8aa8018045371f94c4f059d3b918d
SHA512

d5c5b4fdf29d8f4fe40f4d1831468567d5d8f34b36775715534676a961362529468ae7456dc78997a00494b714341e91c51521a625290a3788dbac1edacb4b72
SSDEEP

12288:e9HFJ9rJxRX1uVVjoaWSoynxdO1FVBaOiRZTERfIhNkNCCLo9Ek5C/ht:qZ1xuVVjfFoynPaVBUR8f+kN10EBv

Score

10^/10

darkcomet guest16 persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

82.39.78.216:1607

82.39.78.216:1604

82.39.78.216:8080

Mutex

DC_MUTEX-P69T1EZ

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
7Fyl6zfBNCyj
install
true
offline_keylogger
true
persistence
false
reg_key
MicroUpdate

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\\msdcsc.exe"	458421dae4cac123f73a4d90a3b42f8423a8aa8018045371f94c4f059d3b918d.exe

Executes dropped EXE 1 IoCs

pid	Process
2260	msdcsc.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-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation	458421dae4cac123f73a4d90a3b42f8423a8aa8018045371f94c4f059d3b918d.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	458421dae4cac123f73a4d90a3b42f8423a8aa8018045371f94c4f059d3b918d.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

description	pid	Process
Token: SeIncreaseQuotaPrivilege	2220	458421dae4cac123f73a4d90a3b42f8423a8aa8018045371f94c4f059d3b918d.exe
Token: SeSecurityPrivilege	2220	458421dae4cac123f73a4d90a3b42f8423a8aa8018045371f94c4f059d3b918d.exe
Token: SeTakeOwnershipPrivilege	2220	458421dae4cac123f73a4d90a3b42f8423a8aa8018045371f94c4f059d3b918d.exe
Token: SeLoadDriverPrivilege	2220	458421dae4cac123f73a4d90a3b42f8423a8aa8018045371f94c4f059d3b918d.exe
Token: SeSystemProfilePrivilege	2220	458421dae4cac123f73a4d90a3b42f8423a8aa8018045371f94c4f059d3b918d.exe
Token: SeSystemtimePrivilege	2220	458421dae4cac123f73a4d90a3b42f8423a8aa8018045371f94c4f059d3b918d.exe
Token: SeProfSingleProcessPrivilege	2220	458421dae4cac123f73a4d90a3b42f8423a8aa8018045371f94c4f059d3b918d.exe
Token: SeIncBasePriorityPrivilege	2220	458421dae4cac123f73a4d90a3b42f8423a8aa8018045371f94c4f059d3b918d.exe
Token: SeCreatePagefilePrivilege	2220	458421dae4cac123f73a4d90a3b42f8423a8aa8018045371f94c4f059d3b918d.exe
Token: SeBackupPrivilege	2220	458421dae4cac123f73a4d90a3b42f8423a8aa8018045371f94c4f059d3b918d.exe
Token: SeRestorePrivilege	2220	458421dae4cac123f73a4d90a3b42f8423a8aa8018045371f94c4f059d3b918d.exe
Token: SeShutdownPrivilege	2220	458421dae4cac123f73a4d90a3b42f8423a8aa8018045371f94c4f059d3b918d.exe
Token: SeDebugPrivilege	2220	458421dae4cac123f73a4d90a3b42f8423a8aa8018045371f94c4f059d3b918d.exe
Token: SeSystemEnvironmentPrivilege	2220	458421dae4cac123f73a4d90a3b42f8423a8aa8018045371f94c4f059d3b918d.exe
Token: SeChangeNotifyPrivilege	2220	458421dae4cac123f73a4d90a3b42f8423a8aa8018045371f94c4f059d3b918d.exe
Token: SeRemoteShutdownPrivilege	2220	458421dae4cac123f73a4d90a3b42f8423a8aa8018045371f94c4f059d3b918d.exe
Token: SeUndockPrivilege	2220	458421dae4cac123f73a4d90a3b42f8423a8aa8018045371f94c4f059d3b918d.exe
Token: SeManageVolumePrivilege	2220	458421dae4cac123f73a4d90a3b42f8423a8aa8018045371f94c4f059d3b918d.exe
Token: SeImpersonatePrivilege	2220	458421dae4cac123f73a4d90a3b42f8423a8aa8018045371f94c4f059d3b918d.exe
Token: SeCreateGlobalPrivilege	2220	458421dae4cac123f73a4d90a3b42f8423a8aa8018045371f94c4f059d3b918d.exe
Token: 33	2220	458421dae4cac123f73a4d90a3b42f8423a8aa8018045371f94c4f059d3b918d.exe
Token: 34	2220	458421dae4cac123f73a4d90a3b42f8423a8aa8018045371f94c4f059d3b918d.exe
Token: 35	2220	458421dae4cac123f73a4d90a3b42f8423a8aa8018045371f94c4f059d3b918d.exe
Token: 36	2220	458421dae4cac123f73a4d90a3b42f8423a8aa8018045371f94c4f059d3b918d.exe
Token: SeIncreaseQuotaPrivilege	2260	msdcsc.exe
Token: SeSecurityPrivilege	2260	msdcsc.exe
Token: SeTakeOwnershipPrivilege	2260	msdcsc.exe
Token: SeLoadDriverPrivilege	2260	msdcsc.exe
Token: SeSystemProfilePrivilege	2260	msdcsc.exe
Token: SeSystemtimePrivilege	2260	msdcsc.exe
Token: SeProfSingleProcessPrivilege	2260	msdcsc.exe
Token: SeIncBasePriorityPrivilege	2260	msdcsc.exe
Token: SeCreatePagefilePrivilege	2260	msdcsc.exe
Token: SeBackupPrivilege	2260	msdcsc.exe
Token: SeRestorePrivilege	2260	msdcsc.exe
Token: SeShutdownPrivilege	2260	msdcsc.exe
Token: SeDebugPrivilege	2260	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	2260	msdcsc.exe
Token: SeChangeNotifyPrivilege	2260	msdcsc.exe
Token: SeRemoteShutdownPrivilege	2260	msdcsc.exe
Token: SeUndockPrivilege	2260	msdcsc.exe
Token: SeManageVolumePrivilege	2260	msdcsc.exe
Token: SeImpersonatePrivilege	2260	msdcsc.exe
Token: SeCreateGlobalPrivilege	2260	msdcsc.exe
Token: 33	2260	msdcsc.exe
Token: 34	2260	msdcsc.exe
Token: 35	2260	msdcsc.exe
Token: 36	2260	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2260	msdcsc.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2220 wrote to memory of 2260	2220	458421dae4cac123f73a4d90a3b42f8423a8aa8018045371f94c4f059d3b918d.exe	79
PID 2220 wrote to memory of 2260	2220	458421dae4cac123f73a4d90a3b42f8423a8aa8018045371f94c4f059d3b918d.exe	79
PID 2220 wrote to memory of 2260	2220	458421dae4cac123f73a4d90a3b42f8423a8aa8018045371f94c4f059d3b918d.exe	79

C:\Users\Admin\AppData\Local\Temp\458421dae4cac123f73a4d90a3b42f8423a8aa8018045371f94c4f059d3b918d.exe
"C:\Users\Admin\AppData\Local\Temp\458421dae4cac123f73a4d90a3b42f8423a8aa8018045371f94c4f059d3b918d.exe"
1⤵
- Modifies WinLogon for persistence
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2220
- C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
  "C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:2260

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Winlogon Helper DLL

T1004

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
658KB

MD5
81dd3e642183505a216cb92fee3a44a0

SHA1
5df216d391f07aee61d8fc5a8eb23030e0dea06d

SHA256
458421dae4cac123f73a4d90a3b42f8423a8aa8018045371f94c4f059d3b918d

SHA512
d5c5b4fdf29d8f4fe40f4d1831468567d5d8f34b36775715534676a961362529468ae7456dc78997a00494b714341e91c51521a625290a3788dbac1edacb4b72

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

Filesize
658KB

MD5
81dd3e642183505a216cb92fee3a44a0

SHA1
5df216d391f07aee61d8fc5a8eb23030e0dea06d

SHA256
458421dae4cac123f73a4d90a3b42f8423a8aa8018045371f94c4f059d3b918d

SHA512
d5c5b4fdf29d8f4fe40f4d1831468567d5d8f34b36775715534676a961362529468ae7456dc78997a00494b714341e91c51521a625290a3788dbac1edacb4b72

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads