darkcomet | ebdcdbce9a6565e60a272cd849f1815d80e08e967030bc3afcf7c6d2c5e6061d

Analysis

max time kernel
210s
max time network
215s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
05/12/2022, 19:04

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General

Target

ebdcdbce9a6565e60a272cd849f1815d80e08e967030bc3afcf7c6d2c5e6061d.exe
Size

658KB
MD5

27dc947c084f959ccfab22706822eff0
SHA1

cb337c0efdba3a865f0d01cd84d0f8f03c276dfe
SHA256

ebdcdbce9a6565e60a272cd849f1815d80e08e967030bc3afcf7c6d2c5e6061d
SHA512

a872c2ed1dca01ce97a1aca3688b65c28cd81f7ba3df3e4cbad6cc996c76de7ec45e5742cc4dc3f83af617354d59d4844bcf40ead6d48a688f5b722c21d1b5ec
SSDEEP

12288:+9HFJ9rJxRX1uVVjoaWSoynxdO1FVBaOiRZTERfIhNkNCCLo9Ek5C/hW:KZ1xuVVjfFoynPaVBUR8f+kN10EBo

Score

10^/10

darkcomet guest16 evasion persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

fawkes.zapto.org:1604

Mutex

DC_MUTEX-XYFF6TV

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
ak2ULVVuYJuG
install
true
offline_keylogger
true
persistence
true
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\\AppData\\Local\\Temp\\MSDCSC\\msdcsc.exe"	ebdcdbce9a6565e60a272cd849f1815d80e08e967030bc3afcf7c6d2c5e6061d.exe

Executes dropped EXE 1 IoCs

pid	Process
4800	msdcsc.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
4276	attrib.exe
2536	attrib.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-1-5-21-4246620582-653642754-1174164128-1000\Control Panel\International\Geo\Nation	ebdcdbce9a6565e60a272cd849f1815d80e08e967030bc3afcf7c6d2c5e6061d.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-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\AppData\\Local\\Temp\\MSDCSC\\msdcsc.exe"	ebdcdbce9a6565e60a272cd849f1815d80e08e967030bc3afcf7c6d2c5e6061d.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\AppData\\Local\\Temp\\MSDCSC\\msdcsc.exe"	msdcsc.exe

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

System Information Discovery
T1082

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	ebdcdbce9a6565e60a272cd849f1815d80e08e967030bc3afcf7c6d2c5e6061d.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	3860	ebdcdbce9a6565e60a272cd849f1815d80e08e967030bc3afcf7c6d2c5e6061d.exe
Token: SeSecurityPrivilege	3860	ebdcdbce9a6565e60a272cd849f1815d80e08e967030bc3afcf7c6d2c5e6061d.exe
Token: SeTakeOwnershipPrivilege	3860	ebdcdbce9a6565e60a272cd849f1815d80e08e967030bc3afcf7c6d2c5e6061d.exe
Token: SeLoadDriverPrivilege	3860	ebdcdbce9a6565e60a272cd849f1815d80e08e967030bc3afcf7c6d2c5e6061d.exe
Token: SeSystemProfilePrivilege	3860	ebdcdbce9a6565e60a272cd849f1815d80e08e967030bc3afcf7c6d2c5e6061d.exe
Token: SeSystemtimePrivilege	3860	ebdcdbce9a6565e60a272cd849f1815d80e08e967030bc3afcf7c6d2c5e6061d.exe
Token: SeProfSingleProcessPrivilege	3860	ebdcdbce9a6565e60a272cd849f1815d80e08e967030bc3afcf7c6d2c5e6061d.exe
Token: SeIncBasePriorityPrivilege	3860	ebdcdbce9a6565e60a272cd849f1815d80e08e967030bc3afcf7c6d2c5e6061d.exe
Token: SeCreatePagefilePrivilege	3860	ebdcdbce9a6565e60a272cd849f1815d80e08e967030bc3afcf7c6d2c5e6061d.exe
Token: SeBackupPrivilege	3860	ebdcdbce9a6565e60a272cd849f1815d80e08e967030bc3afcf7c6d2c5e6061d.exe
Token: SeRestorePrivilege	3860	ebdcdbce9a6565e60a272cd849f1815d80e08e967030bc3afcf7c6d2c5e6061d.exe
Token: SeShutdownPrivilege	3860	ebdcdbce9a6565e60a272cd849f1815d80e08e967030bc3afcf7c6d2c5e6061d.exe
Token: SeDebugPrivilege	3860	ebdcdbce9a6565e60a272cd849f1815d80e08e967030bc3afcf7c6d2c5e6061d.exe
Token: SeSystemEnvironmentPrivilege	3860	ebdcdbce9a6565e60a272cd849f1815d80e08e967030bc3afcf7c6d2c5e6061d.exe
Token: SeChangeNotifyPrivilege	3860	ebdcdbce9a6565e60a272cd849f1815d80e08e967030bc3afcf7c6d2c5e6061d.exe
Token: SeRemoteShutdownPrivilege	3860	ebdcdbce9a6565e60a272cd849f1815d80e08e967030bc3afcf7c6d2c5e6061d.exe
Token: SeUndockPrivilege	3860	ebdcdbce9a6565e60a272cd849f1815d80e08e967030bc3afcf7c6d2c5e6061d.exe
Token: SeManageVolumePrivilege	3860	ebdcdbce9a6565e60a272cd849f1815d80e08e967030bc3afcf7c6d2c5e6061d.exe
Token: SeImpersonatePrivilege	3860	ebdcdbce9a6565e60a272cd849f1815d80e08e967030bc3afcf7c6d2c5e6061d.exe
Token: SeCreateGlobalPrivilege	3860	ebdcdbce9a6565e60a272cd849f1815d80e08e967030bc3afcf7c6d2c5e6061d.exe
Token: 33	3860	ebdcdbce9a6565e60a272cd849f1815d80e08e967030bc3afcf7c6d2c5e6061d.exe
Token: 34	3860	ebdcdbce9a6565e60a272cd849f1815d80e08e967030bc3afcf7c6d2c5e6061d.exe
Token: 35	3860	ebdcdbce9a6565e60a272cd849f1815d80e08e967030bc3afcf7c6d2c5e6061d.exe
Token: 36	3860	ebdcdbce9a6565e60a272cd849f1815d80e08e967030bc3afcf7c6d2c5e6061d.exe
Token: SeIncreaseQuotaPrivilege	4800	msdcsc.exe
Token: SeSecurityPrivilege	4800	msdcsc.exe
Token: SeTakeOwnershipPrivilege	4800	msdcsc.exe
Token: SeLoadDriverPrivilege	4800	msdcsc.exe
Token: SeSystemProfilePrivilege	4800	msdcsc.exe
Token: SeSystemtimePrivilege	4800	msdcsc.exe
Token: SeProfSingleProcessPrivilege	4800	msdcsc.exe
Token: SeIncBasePriorityPrivilege	4800	msdcsc.exe
Token: SeCreatePagefilePrivilege	4800	msdcsc.exe
Token: SeBackupPrivilege	4800	msdcsc.exe
Token: SeRestorePrivilege	4800	msdcsc.exe
Token: SeShutdownPrivilege	4800	msdcsc.exe
Token: SeDebugPrivilege	4800	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	4800	msdcsc.exe
Token: SeChangeNotifyPrivilege	4800	msdcsc.exe
Token: SeRemoteShutdownPrivilege	4800	msdcsc.exe
Token: SeUndockPrivilege	4800	msdcsc.exe
Token: SeManageVolumePrivilege	4800	msdcsc.exe
Token: SeImpersonatePrivilege	4800	msdcsc.exe
Token: SeCreateGlobalPrivilege	4800	msdcsc.exe
Token: 33	4800	msdcsc.exe
Token: 34	4800	msdcsc.exe
Token: 35	4800	msdcsc.exe
Token: 36	4800	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4800	msdcsc.exe

Suspicious use of WriteProcessMemory 37 IoCs

description	pid	Process	procid_target
PID 3860 wrote to memory of 2648	3860	ebdcdbce9a6565e60a272cd849f1815d80e08e967030bc3afcf7c6d2c5e6061d.exe	82
PID 3860 wrote to memory of 2648	3860	ebdcdbce9a6565e60a272cd849f1815d80e08e967030bc3afcf7c6d2c5e6061d.exe	82
PID 3860 wrote to memory of 2648	3860	ebdcdbce9a6565e60a272cd849f1815d80e08e967030bc3afcf7c6d2c5e6061d.exe	82
PID 3860 wrote to memory of 4820	3860	ebdcdbce9a6565e60a272cd849f1815d80e08e967030bc3afcf7c6d2c5e6061d.exe	83
PID 3860 wrote to memory of 4820	3860	ebdcdbce9a6565e60a272cd849f1815d80e08e967030bc3afcf7c6d2c5e6061d.exe	83
PID 3860 wrote to memory of 4820	3860	ebdcdbce9a6565e60a272cd849f1815d80e08e967030bc3afcf7c6d2c5e6061d.exe	83
PID 4820 wrote to memory of 2536	4820	cmd.exe	87
PID 4820 wrote to memory of 2536	4820	cmd.exe	87
PID 4820 wrote to memory of 2536	4820	cmd.exe	87
PID 2648 wrote to memory of 4276	2648	cmd.exe	86
PID 2648 wrote to memory of 4276	2648	cmd.exe	86
PID 2648 wrote to memory of 4276	2648	cmd.exe	86
PID 3860 wrote to memory of 4800	3860	ebdcdbce9a6565e60a272cd849f1815d80e08e967030bc3afcf7c6d2c5e6061d.exe	88
PID 3860 wrote to memory of 4800	3860	ebdcdbce9a6565e60a272cd849f1815d80e08e967030bc3afcf7c6d2c5e6061d.exe	88
PID 3860 wrote to memory of 4800	3860	ebdcdbce9a6565e60a272cd849f1815d80e08e967030bc3afcf7c6d2c5e6061d.exe	88
PID 4800 wrote to memory of 2524	4800	msdcsc.exe	89
PID 4800 wrote to memory of 2524	4800	msdcsc.exe	89
PID 4800 wrote to memory of 2524	4800	msdcsc.exe	89
PID 4800 wrote to memory of 2524	4800	msdcsc.exe	89
PID 4800 wrote to memory of 2524	4800	msdcsc.exe	89
PID 4800 wrote to memory of 2524	4800	msdcsc.exe	89
PID 4800 wrote to memory of 2524	4800	msdcsc.exe	89
PID 4800 wrote to memory of 2524	4800	msdcsc.exe	89
PID 4800 wrote to memory of 2524	4800	msdcsc.exe	89
PID 4800 wrote to memory of 2524	4800	msdcsc.exe	89
PID 4800 wrote to memory of 2524	4800	msdcsc.exe	89
PID 4800 wrote to memory of 2524	4800	msdcsc.exe	89
PID 4800 wrote to memory of 2524	4800	msdcsc.exe	89
PID 4800 wrote to memory of 2524	4800	msdcsc.exe	89
PID 4800 wrote to memory of 2524	4800	msdcsc.exe	89
PID 4800 wrote to memory of 2524	4800	msdcsc.exe	89
PID 4800 wrote to memory of 2524	4800	msdcsc.exe	89
PID 4800 wrote to memory of 2524	4800	msdcsc.exe	89
PID 4800 wrote to memory of 2524	4800	msdcsc.exe	89
PID 4800 wrote to memory of 2524	4800	msdcsc.exe	89
PID 4800 wrote to memory of 2524	4800	msdcsc.exe	89
PID 4800 wrote to memory of 2524	4800	msdcsc.exe	89

Views/modifies file attributes 1 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1158

pid	Process
4276	attrib.exe
2536	attrib.exe

C:\Users\Admin\AppData\Local\Temp\ebdcdbce9a6565e60a272cd849f1815d80e08e967030bc3afcf7c6d2c5e6061d.exe
"C:\Users\Admin\AppData\Local\Temp\ebdcdbce9a6565e60a272cd849f1815d80e08e967030bc3afcf7c6d2c5e6061d.exe"
1⤵
- Modifies WinLogon for persistence
- Checks computer location settings
- Adds Run key to start application
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3860
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\ebdcdbce9a6565e60a272cd849f1815d80e08e967030bc3afcf7c6d2c5e6061d.exe" +s +h
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2648
- - C:\Windows\SysWOW64\attrib.exe
    attrib "C:\Users\Admin\AppData\Local\Temp\ebdcdbce9a6565e60a272cd849f1815d80e08e967030bc3afcf7c6d2c5e6061d.exe" +s +h
    3⤵
    - Sets file to hidden
    - Views/modifies file attributes
    PID:4276
- 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:4820
- - C:\Windows\SysWOW64\attrib.exe
    attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
    3⤵
    - Sets file to hidden
    - Views/modifies file attributes
    PID:2536
- C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
  "C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4800
- - C:\Windows\SysWOW64\notepad.exe
    notepad
    3⤵
    PID:2524

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

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe

Filesize
658KB

MD5
27dc947c084f959ccfab22706822eff0

SHA1
cb337c0efdba3a865f0d01cd84d0f8f03c276dfe

SHA256
ebdcdbce9a6565e60a272cd849f1815d80e08e967030bc3afcf7c6d2c5e6061d

SHA512
a872c2ed1dca01ce97a1aca3688b65c28cd81f7ba3df3e4cbad6cc996c76de7ec45e5742cc4dc3f83af617354d59d4844bcf40ead6d48a688f5b722c21d1b5ec

Download Submit
C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe

Filesize
658KB

MD5
27dc947c084f959ccfab22706822eff0

SHA1
cb337c0efdba3a865f0d01cd84d0f8f03c276dfe

SHA256
ebdcdbce9a6565e60a272cd849f1815d80e08e967030bc3afcf7c6d2c5e6061d

SHA512
a872c2ed1dca01ce97a1aca3688b65c28cd81f7ba3df3e4cbad6cc996c76de7ec45e5742cc4dc3f83af617354d59d4844bcf40ead6d48a688f5b722c21d1b5ec

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads