darkcomet | 16c8b807fb271c9fa9257adecc6fedb9b43a7b3ca7e2bce2c5797a68f3895a75 | Triage

Analysis

max time kernel
18s
max time network
17s
platform
windows10-1703_x64
resource
win10-20240404-en
resource tags

arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system
submitted
07-04-2024 09:03

Sharing

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General

Target

fdie.exe
Size

349KB
MD5

16fc0818c01b213c1dda3e2c6500b2b5
SHA1

41782495122094490f024cfc7de8f75c4ea366a1
SHA256

16c8b807fb271c9fa9257adecc6fedb9b43a7b3ca7e2bce2c5797a68f3895a75
SHA512

1a373a5b02eb6389310240a2c51e64f084ba087f2628653806f70da726767a2ce9d6d57c23638825d082027369fc837cbacfa98531b5bbfac355034ab2e0bbf0
SSDEEP

6144:FcNYS996KFifeVjBpeExgVTFSXFoMc5RhCaL37NRI2RwplSZkOiu9PZ/p:FcW7KEZlPzCy37NxRPNVR

Score

10^/10

darkcomet guest16 evasion rat trojan upx

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

127.0.0.1:1604

Mutex

DC_MUTEX-Z0Y353G

Attributes

gencode
TrmiFnKugxo0
install
false
offline_keylogger
true
persistence
false

Signatures

Darkcomet
DarkComet is a remote access trojan (RAT) developed by Jean-Pierre Lesueur.
trojan rat darkcomet

Modifies firewall policy service 2 TTPs 3 IoCs

Modify Registry

Windows Service

Processes:

fdie.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile	fdie.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\EnableFirewall = "0"	fdie.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DisableNotifications = "0"	fdie.exe

Modifies security service 2 TTPs 1 IoCs
evasion

Modify Registry
T1112

Windows Service
T1543.003

Processes:

fdie.exe

description ioc process

Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\wscsvc\Start = "4" fdie.exe

Windows security bypass 2 TTPs 2 IoCs

Disable or Modify Tools

Modify Registry

Processes:

fdie.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	fdie.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	fdie.exe

Disables RegEdit via registry modification 1 IoCs

Processes:

fdie.exe

description	ioc	process
Set value (int)	\REGISTRY\USER\S-1-5-21-3699363923-1875576828-3287151903-1000\Software\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1"	fdie.exe

Disables Task Manager via registry modification
evasion
Drops file in Drivers directory 1 IoCs

Processes:

fdie.exe

description ioc process

File opened for modification C:\Windows\system32\drivers\etc\hosts fdie.exe

UPX packed file 2 IoCs

Detects executables packed with UPX/modified UPX open source packer.

Processes:

resource	yara_rule
behavioral2/memory/588-0-0x0000000000400000-0x00000000004E8000-memory.dmp	upx
behavioral2/memory/588-3-0x0000000000400000-0x00000000004E8000-memory.dmp	upx

Windows security modification 2 TTPs 2 IoCs

Disable or Modify Tools

Modify Registry

Processes:

fdie.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	fdie.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	fdie.exe

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

Processes:

fdie.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	588	fdie.exe
Token: SeSecurityPrivilege	588	fdie.exe
Token: SeTakeOwnershipPrivilege	588	fdie.exe
Token: SeLoadDriverPrivilege	588	fdie.exe
Token: SeSystemProfilePrivilege	588	fdie.exe
Token: SeSystemtimePrivilege	588	fdie.exe
Token: SeProfSingleProcessPrivilege	588	fdie.exe
Token: SeIncBasePriorityPrivilege	588	fdie.exe
Token: SeCreatePagefilePrivilege	588	fdie.exe
Token: SeBackupPrivilege	588	fdie.exe
Token: SeRestorePrivilege	588	fdie.exe
Token: SeShutdownPrivilege	588	fdie.exe
Token: SeDebugPrivilege	588	fdie.exe
Token: SeSystemEnvironmentPrivilege	588	fdie.exe
Token: SeChangeNotifyPrivilege	588	fdie.exe
Token: SeRemoteShutdownPrivilege	588	fdie.exe
Token: SeUndockPrivilege	588	fdie.exe
Token: SeManageVolumePrivilege	588	fdie.exe
Token: SeImpersonatePrivilege	588	fdie.exe
Token: SeCreateGlobalPrivilege	588	fdie.exe
Token: 33	588	fdie.exe
Token: 34	588	fdie.exe
Token: 35	588	fdie.exe
Token: 36	588	fdie.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

fdie.exe

pid process

588 fdie.exe

System policy modification 1 TTPs 3 IoCs

Modify Registry

Processes:

fdie.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\CurrentVersion	fdie.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\CurrentVersion\Explorern	fdie.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\CurrentVersion\Explorern\NoControlPanel = "1"	fdie.exe

C:\Users\Admin\AppData\Local\Temp\fdie.exe
"C:\Users\Admin\AppData\Local\Temp\fdie.exe"
1⤵
- Modifies firewall policy service
- Modifies security service
- Windows security bypass
- Disables RegEdit via registry modification
- Drops file in Drivers directory
- Windows security modification
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- System policy modification
PID:588

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Create or Modify System Process

Windows Service

Privilege Escalation

Create or Modify System Process

Windows Service

Defense Evasion

Modify Registry

Impair Defenses

Disable or Modify Tools

Credential Access

Discovery

System Information Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

memory/588-0-0x0000000000400000-0x00000000004E8000-memory.dmp

Filesize
928KB

Download
memory/588-1-0x00000000009B0000-0x00000000009B1000-memory.dmp

Filesize
4KB

Download
memory/588-3-0x0000000000400000-0x00000000004E8000-memory.dmp

Filesize
928KB

Download