darkcomet | a23fdeddb683f716be744ef3fe9a8ce2c87b02f5e5c1f6c8bdb70881de528304

Analysis

max time kernel
150s
max time network
149s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-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

Extracted

Family

darkcomet

Attributes

gencode
install
false
offline_keylogger
false
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-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "\"C:\\Users\\Admin\\AppData\\Roaming\\enAXTUqfcq6bwgcI\\o56E6Fs4tJsz.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 2708 set thread context of 2728	2708	cdfbee96df9f657c44ea8ed17e90e025.exe	31

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
2708	cdfbee96df9f657c44ea8ed17e90e025.exe
2708	cdfbee96df9f657c44ea8ed17e90e025.exe

Suspicious use of AdjustPrivilegeToken 25 IoCs

description	pid	Process
Token: SeDebugPrivilege	2708	cdfbee96df9f657c44ea8ed17e90e025.exe
Token: SeDebugPrivilege	2708	cdfbee96df9f657c44ea8ed17e90e025.exe
Token: SeIncreaseQuotaPrivilege	2728	vbc.exe
Token: SeSecurityPrivilege	2728	vbc.exe
Token: SeTakeOwnershipPrivilege	2728	vbc.exe
Token: SeLoadDriverPrivilege	2728	vbc.exe
Token: SeSystemProfilePrivilege	2728	vbc.exe
Token: SeSystemtimePrivilege	2728	vbc.exe
Token: SeProfSingleProcessPrivilege	2728	vbc.exe
Token: SeIncBasePriorityPrivilege	2728	vbc.exe
Token: SeCreatePagefilePrivilege	2728	vbc.exe
Token: SeBackupPrivilege	2728	vbc.exe
Token: SeRestorePrivilege	2728	vbc.exe
Token: SeShutdownPrivilege	2728	vbc.exe
Token: SeDebugPrivilege	2728	vbc.exe
Token: SeSystemEnvironmentPrivilege	2728	vbc.exe
Token: SeChangeNotifyPrivilege	2728	vbc.exe
Token: SeRemoteShutdownPrivilege	2728	vbc.exe
Token: SeUndockPrivilege	2728	vbc.exe
Token: SeManageVolumePrivilege	2728	vbc.exe
Token: SeImpersonatePrivilege	2728	vbc.exe
Token: SeCreateGlobalPrivilege	2728	vbc.exe
Token: 33	2728	vbc.exe
Token: 34	2728	vbc.exe
Token: 35	2728	vbc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2728	vbc.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 2708 wrote to memory of 2728	2708	cdfbee96df9f657c44ea8ed17e90e025.exe	31
PID 2708 wrote to memory of 2728	2708	cdfbee96df9f657c44ea8ed17e90e025.exe	31
PID 2708 wrote to memory of 2728	2708	cdfbee96df9f657c44ea8ed17e90e025.exe	31
PID 2708 wrote to memory of 2728	2708	cdfbee96df9f657c44ea8ed17e90e025.exe	31
PID 2708 wrote to memory of 2728	2708	cdfbee96df9f657c44ea8ed17e90e025.exe	31
PID 2708 wrote to memory of 2728	2708	cdfbee96df9f657c44ea8ed17e90e025.exe	31
PID 2708 wrote to memory of 2728	2708	cdfbee96df9f657c44ea8ed17e90e025.exe	31
PID 2708 wrote to memory of 2728	2708	cdfbee96df9f657c44ea8ed17e90e025.exe	31
PID 2708 wrote to memory of 2728	2708	cdfbee96df9f657c44ea8ed17e90e025.exe	31
PID 2708 wrote to memory of 2728	2708	cdfbee96df9f657c44ea8ed17e90e025.exe	31
PID 2708 wrote to memory of 2728	2708	cdfbee96df9f657c44ea8ed17e90e025.exe	31
PID 2708 wrote to memory of 2728	2708	cdfbee96df9f657c44ea8ed17e90e025.exe	31
PID 2708 wrote to memory of 2728	2708	cdfbee96df9f657c44ea8ed17e90e025.exe	31

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:2708
- 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:2728

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/2708-0-0x0000000074261000-0x0000000074262000-memory.dmp

Filesize
4KB

Download
memory/2708-1-0x0000000074260000-0x000000007480B000-memory.dmp

Filesize
5.7MB

Download
memory/2708-2-0x0000000074260000-0x000000007480B000-memory.dmp

Filesize
5.7MB

Download
memory/2708-3-0x0000000074260000-0x000000007480B000-memory.dmp

Filesize
5.7MB

Download
memory/2728-7-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2728-17-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2728-15-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2728-18-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2728-14-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2728-13-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2728-12-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2728-11-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2728-10-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2728-8-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2728-16-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2728-20-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2728-21-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2728-22-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2728-23-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2728-24-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2728-25-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2728-26-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2728-29-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2728-31-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2728-32-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2728-33-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2728-34-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2728-39-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2728-40-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2728-41-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2728-42-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download