darkcomet | b49bf9fb3415d3755afa3a8cd71434ffcb47ecd09e33648b53879b3c6008e8df

Analysis

max time kernel
153s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
27/11/2022, 00:09

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General

Target

b49bf9fb3415d3755afa3a8cd71434ffcb47ecd09e33648b53879b3c6008e8df.exe
Size

690KB
MD5

3c5d2b983954dda34a20869edd0ab20e
SHA1

0ae98b776b37d6c26317afaa13b0b59f4342a0fe
SHA256

b49bf9fb3415d3755afa3a8cd71434ffcb47ecd09e33648b53879b3c6008e8df
SHA512

50b9af5fc454d4b4d1d3096a64e0121bfc555a49cc8a9d7516f2473f7584ef0d5e64e90f5842e34b4a3e2bdc7647883b31272d90c3d3a5bc64c2211a613342d6
SSDEEP

12288:V9HFJ9rJxRX1uVVjoaWSoynxdO1FVBaOiRZTERfIhNkNCCLo9Ek5C/hoJ:fZ1xuVVjfFoynPaVBUR8f+kN10EB6

Score

10^/10

darkcomet bruh persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Bruh

midnight8045.duckydns.org:5050

Mutex

DCMIN_MUTEX-AUKNFFR

Attributes

InstallPath
DCSCMIN\IMDCSC.exe
gencode
HQTfAYDL9u0p
install
true
offline_keylogger
true
persistence
false
reg_key
DarkComet RAT

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\\DCSCMIN\\IMDCSC.exe"	b49bf9fb3415d3755afa3a8cd71434ffcb47ecd09e33648b53879b3c6008e8df.exe

Executes dropped EXE 1 IoCs

pid	Process
2660	IMDCSC.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-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation	b49bf9fb3415d3755afa3a8cd71434ffcb47ecd09e33648b53879b3c6008e8df.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-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\DarkComet RAT = "C:\\Users\\Admin\\Documents\\DCSCMIN\\IMDCSC.exe"	b49bf9fb3415d3755afa3a8cd71434ffcb47ecd09e33648b53879b3c6008e8df.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\InstallService\{FE2E6FA6-0475-4413-A6E9-A3370DF0E1B3}.catalogItem	svchost.exe
File created	C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\InstallService\{0A19A2B0-6068-44F4-8124-944FBA8B70B7}.catalogItem	svchost.exe

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

System Information Discovery
T1082

Checks processor information in registry 2 TTPs 3 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	svchost.exe

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	svchost.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	1152	b49bf9fb3415d3755afa3a8cd71434ffcb47ecd09e33648b53879b3c6008e8df.exe
Token: SeSecurityPrivilege	1152	b49bf9fb3415d3755afa3a8cd71434ffcb47ecd09e33648b53879b3c6008e8df.exe
Token: SeTakeOwnershipPrivilege	1152	b49bf9fb3415d3755afa3a8cd71434ffcb47ecd09e33648b53879b3c6008e8df.exe
Token: SeLoadDriverPrivilege	1152	b49bf9fb3415d3755afa3a8cd71434ffcb47ecd09e33648b53879b3c6008e8df.exe
Token: SeSystemProfilePrivilege	1152	b49bf9fb3415d3755afa3a8cd71434ffcb47ecd09e33648b53879b3c6008e8df.exe
Token: SeSystemtimePrivilege	1152	b49bf9fb3415d3755afa3a8cd71434ffcb47ecd09e33648b53879b3c6008e8df.exe
Token: SeProfSingleProcessPrivilege	1152	b49bf9fb3415d3755afa3a8cd71434ffcb47ecd09e33648b53879b3c6008e8df.exe
Token: SeIncBasePriorityPrivilege	1152	b49bf9fb3415d3755afa3a8cd71434ffcb47ecd09e33648b53879b3c6008e8df.exe
Token: SeCreatePagefilePrivilege	1152	b49bf9fb3415d3755afa3a8cd71434ffcb47ecd09e33648b53879b3c6008e8df.exe
Token: SeBackupPrivilege	1152	b49bf9fb3415d3755afa3a8cd71434ffcb47ecd09e33648b53879b3c6008e8df.exe
Token: SeRestorePrivilege	1152	b49bf9fb3415d3755afa3a8cd71434ffcb47ecd09e33648b53879b3c6008e8df.exe
Token: SeShutdownPrivilege	1152	b49bf9fb3415d3755afa3a8cd71434ffcb47ecd09e33648b53879b3c6008e8df.exe
Token: SeDebugPrivilege	1152	b49bf9fb3415d3755afa3a8cd71434ffcb47ecd09e33648b53879b3c6008e8df.exe
Token: SeSystemEnvironmentPrivilege	1152	b49bf9fb3415d3755afa3a8cd71434ffcb47ecd09e33648b53879b3c6008e8df.exe
Token: SeChangeNotifyPrivilege	1152	b49bf9fb3415d3755afa3a8cd71434ffcb47ecd09e33648b53879b3c6008e8df.exe
Token: SeRemoteShutdownPrivilege	1152	b49bf9fb3415d3755afa3a8cd71434ffcb47ecd09e33648b53879b3c6008e8df.exe
Token: SeUndockPrivilege	1152	b49bf9fb3415d3755afa3a8cd71434ffcb47ecd09e33648b53879b3c6008e8df.exe
Token: SeManageVolumePrivilege	1152	b49bf9fb3415d3755afa3a8cd71434ffcb47ecd09e33648b53879b3c6008e8df.exe
Token: SeImpersonatePrivilege	1152	b49bf9fb3415d3755afa3a8cd71434ffcb47ecd09e33648b53879b3c6008e8df.exe
Token: SeCreateGlobalPrivilege	1152	b49bf9fb3415d3755afa3a8cd71434ffcb47ecd09e33648b53879b3c6008e8df.exe
Token: 33	1152	b49bf9fb3415d3755afa3a8cd71434ffcb47ecd09e33648b53879b3c6008e8df.exe
Token: 34	1152	b49bf9fb3415d3755afa3a8cd71434ffcb47ecd09e33648b53879b3c6008e8df.exe
Token: 35	1152	b49bf9fb3415d3755afa3a8cd71434ffcb47ecd09e33648b53879b3c6008e8df.exe
Token: 36	1152	b49bf9fb3415d3755afa3a8cd71434ffcb47ecd09e33648b53879b3c6008e8df.exe
Token: SeIncreaseQuotaPrivilege	2660	IMDCSC.exe
Token: SeSecurityPrivilege	2660	IMDCSC.exe
Token: SeTakeOwnershipPrivilege	2660	IMDCSC.exe
Token: SeLoadDriverPrivilege	2660	IMDCSC.exe
Token: SeSystemProfilePrivilege	2660	IMDCSC.exe
Token: SeSystemtimePrivilege	2660	IMDCSC.exe
Token: SeProfSingleProcessPrivilege	2660	IMDCSC.exe
Token: SeIncBasePriorityPrivilege	2660	IMDCSC.exe
Token: SeCreatePagefilePrivilege	2660	IMDCSC.exe
Token: SeBackupPrivilege	2660	IMDCSC.exe
Token: SeRestorePrivilege	2660	IMDCSC.exe
Token: SeShutdownPrivilege	2660	IMDCSC.exe
Token: SeDebugPrivilege	2660	IMDCSC.exe
Token: SeSystemEnvironmentPrivilege	2660	IMDCSC.exe
Token: SeChangeNotifyPrivilege	2660	IMDCSC.exe
Token: SeRemoteShutdownPrivilege	2660	IMDCSC.exe
Token: SeUndockPrivilege	2660	IMDCSC.exe
Token: SeManageVolumePrivilege	2660	IMDCSC.exe
Token: SeImpersonatePrivilege	2660	IMDCSC.exe
Token: SeCreateGlobalPrivilege	2660	IMDCSC.exe
Token: 33	2660	IMDCSC.exe
Token: 34	2660	IMDCSC.exe
Token: 35	2660	IMDCSC.exe
Token: 36	2660	IMDCSC.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2660	IMDCSC.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1152 wrote to memory of 2660	1152	b49bf9fb3415d3755afa3a8cd71434ffcb47ecd09e33648b53879b3c6008e8df.exe	75
PID 1152 wrote to memory of 2660	1152	b49bf9fb3415d3755afa3a8cd71434ffcb47ecd09e33648b53879b3c6008e8df.exe	75
PID 1152 wrote to memory of 2660	1152	b49bf9fb3415d3755afa3a8cd71434ffcb47ecd09e33648b53879b3c6008e8df.exe	75

C:\Users\Admin\AppData\Local\Temp\b49bf9fb3415d3755afa3a8cd71434ffcb47ecd09e33648b53879b3c6008e8df.exe
"C:\Users\Admin\AppData\Local\Temp\b49bf9fb3415d3755afa3a8cd71434ffcb47ecd09e33648b53879b3c6008e8df.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:1152
- C:\Users\Admin\Documents\DCSCMIN\IMDCSC.exe
  "C:\Users\Admin\Documents\DCSCMIN\IMDCSC.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:2660

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k netsvcs -p
1⤵
- Drops file in System32 directory
- Checks processor information in registry
- Enumerates system info in registry
PID:1268

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\DCSCMIN\IMDCSC.exe

Filesize
690KB

MD5
3c5d2b983954dda34a20869edd0ab20e

SHA1
0ae98b776b37d6c26317afaa13b0b59f4342a0fe

SHA256
b49bf9fb3415d3755afa3a8cd71434ffcb47ecd09e33648b53879b3c6008e8df

SHA512
50b9af5fc454d4b4d1d3096a64e0121bfc555a49cc8a9d7516f2473f7584ef0d5e64e90f5842e34b4a3e2bdc7647883b31272d90c3d3a5bc64c2211a613342d6

Download Submit
C:\Users\Admin\Documents\DCSCMIN\IMDCSC.exe

Filesize
690KB

MD5
3c5d2b983954dda34a20869edd0ab20e

SHA1
0ae98b776b37d6c26317afaa13b0b59f4342a0fe

SHA256
b49bf9fb3415d3755afa3a8cd71434ffcb47ecd09e33648b53879b3c6008e8df

SHA512
50b9af5fc454d4b4d1d3096a64e0121bfc555a49cc8a9d7516f2473f7584ef0d5e64e90f5842e34b4a3e2bdc7647883b31272d90c3d3a5bc64c2211a613342d6

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads