darkcomet | a23fdeddb683f716be744ef3fe9a8ce2c87b02f5e5c1f6c8bdb70881de528304

Analysis

max time kernel
149s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20250314-en
resource tags

arch:x64arch:x86image:win10v2004-20250314-enlocale:en-usos:windows10-2004-x64system
submitted
22/03/2025, 06:16

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General

Target

cdfbee96df9f657c44ea8ed17e90e025.exe
Size

758KB
MD5

cdfbee96df9f657c44ea8ed17e90e025
SHA1

60b1c1e4acaa26b34ffb6ea396747a97ac69372c
SHA256

be3703dbb2fd2edad9de7658b62281ed0c66138dd4610872cbe7303e2382b7a6
SHA512

9fd633c89ac8528993c5d040531d851dd410d554d05a6628bf280c4d6dbddebb8ba478c3b9b9836edc9f92b7ee10fe444b96ff98aaadf04f7c065f3f4bea182d
SSDEEP

12288:w2NBsbg9KSBcGyUubSW3Gip0VFA2dh6t18fOklER9pEm5TTT:lPdBcGyfbSW3G8cFoef3E7pEITTT

Score

10^/10

darkcomet august 2020 discovery persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

AuGUST 2020

chrisle79.ddns.net:3317

jacknop79.ddns.net:3317

smath79.ddns.net:3317

whatis79.ddns.net:3317

goodgt79.ddns.net:3317

bonding79.ddns.net:3317

Mutex

DC_MUTEX-GPF8HHM

Attributes

gencode
PvuvMlKPjBiy
install
false
offline_keylogger
true
password
Password20$
persistence
false

rc4.plain

Signatures

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

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-814918696-1585701690-3140955116-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "\"C:\\Users\\Admin\\AppData\\Roaming\\enAXTUqfcq6bwgcI\\gAfARS7i6aEq.exe\",explorer.exe"	cdfbee96df9f657c44ea8ed17e90e025.exe

Uses the VBS compiler for execution 1 TTPs

Command and Scripting Interpreter
T1059

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 892 set thread context of 1284	892	cdfbee96df9f657c44ea8ed17e90e025.exe	103

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cdfbee96df9f657c44ea8ed17e90e025.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vbc.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
892	cdfbee96df9f657c44ea8ed17e90e025.exe
892	cdfbee96df9f657c44ea8ed17e90e025.exe

Suspicious use of AdjustPrivilegeToken 26 IoCs

description	pid	Process
Token: SeDebugPrivilege	892	cdfbee96df9f657c44ea8ed17e90e025.exe
Token: SeDebugPrivilege	892	cdfbee96df9f657c44ea8ed17e90e025.exe
Token: SeIncreaseQuotaPrivilege	1284	vbc.exe
Token: SeSecurityPrivilege	1284	vbc.exe
Token: SeTakeOwnershipPrivilege	1284	vbc.exe
Token: SeLoadDriverPrivilege	1284	vbc.exe
Token: SeSystemProfilePrivilege	1284	vbc.exe
Token: SeSystemtimePrivilege	1284	vbc.exe
Token: SeProfSingleProcessPrivilege	1284	vbc.exe
Token: SeIncBasePriorityPrivilege	1284	vbc.exe
Token: SeCreatePagefilePrivilege	1284	vbc.exe
Token: SeBackupPrivilege	1284	vbc.exe
Token: SeRestorePrivilege	1284	vbc.exe
Token: SeShutdownPrivilege	1284	vbc.exe
Token: SeDebugPrivilege	1284	vbc.exe
Token: SeSystemEnvironmentPrivilege	1284	vbc.exe
Token: SeChangeNotifyPrivilege	1284	vbc.exe
Token: SeRemoteShutdownPrivilege	1284	vbc.exe
Token: SeUndockPrivilege	1284	vbc.exe
Token: SeManageVolumePrivilege	1284	vbc.exe
Token: SeImpersonatePrivilege	1284	vbc.exe
Token: SeCreateGlobalPrivilege	1284	vbc.exe
Token: 33	1284	vbc.exe
Token: 34	1284	vbc.exe
Token: 35	1284	vbc.exe
Token: 36	1284	vbc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1284	vbc.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 892 wrote to memory of 1284	892	cdfbee96df9f657c44ea8ed17e90e025.exe	103
PID 892 wrote to memory of 1284	892	cdfbee96df9f657c44ea8ed17e90e025.exe	103
PID 892 wrote to memory of 1284	892	cdfbee96df9f657c44ea8ed17e90e025.exe	103
PID 892 wrote to memory of 1284	892	cdfbee96df9f657c44ea8ed17e90e025.exe	103
PID 892 wrote to memory of 1284	892	cdfbee96df9f657c44ea8ed17e90e025.exe	103
PID 892 wrote to memory of 1284	892	cdfbee96df9f657c44ea8ed17e90e025.exe	103
PID 892 wrote to memory of 1284	892	cdfbee96df9f657c44ea8ed17e90e025.exe	103
PID 892 wrote to memory of 1284	892	cdfbee96df9f657c44ea8ed17e90e025.exe	103
PID 892 wrote to memory of 1284	892	cdfbee96df9f657c44ea8ed17e90e025.exe	103
PID 892 wrote to memory of 1284	892	cdfbee96df9f657c44ea8ed17e90e025.exe	103
PID 892 wrote to memory of 1284	892	cdfbee96df9f657c44ea8ed17e90e025.exe	103
PID 892 wrote to memory of 1284	892	cdfbee96df9f657c44ea8ed17e90e025.exe	103

C:\Users\Admin\AppData\Local\Temp\cdfbee96df9f657c44ea8ed17e90e025.exe
"C:\Users\Admin\AppData\Local\Temp\cdfbee96df9f657c44ea8ed17e90e025.exe"
1⤵
- Modifies WinLogon for persistence
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:892
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
  "C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:1284

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

Persistence

Boot or Logon Autostart Execution

T1547

Winlogon Helper DLL

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Winlogon Helper DLL

T1547.004

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/892-0-0x0000000074792000-0x0000000074793000-memory.dmp

Filesize
4KB

Download
memory/892-1-0x0000000074790000-0x0000000074D41000-memory.dmp

Filesize
5.7MB

Download
memory/892-2-0x0000000074790000-0x0000000074D41000-memory.dmp

Filesize
5.7MB

Download
memory/892-4-0x0000000074790000-0x0000000074D41000-memory.dmp

Filesize
5.7MB

Download
memory/892-3-0x0000000074792000-0x0000000074793000-memory.dmp

Filesize
4KB

Download
memory/1284-7-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/1284-8-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/1284-10-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/1284-11-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/1284-12-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/1284-14-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/1284-13-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/1284-15-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/1284-16-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/1284-19-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/1284-20-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/1284-21-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/1284-22-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/1284-23-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download