darkcomet | ee36ebfcb37f36c0f9f285132adefa64feebc0212b8f0930f0c2b2017bb931df

Analysis

max time kernel
120s
max time network
118s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
16/02/2025, 20:49

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General

Target

ee36ebfcb37f36c0f9f285132adefa64feebc0212b8f0930f0c2b2017bb931df.exe
Size

546KB
MD5

bd64270ddd4665196a13698621e445ea
SHA1

c7321df1931694529559cd4b358a221e27b6034f
SHA256

ee36ebfcb37f36c0f9f285132adefa64feebc0212b8f0930f0c2b2017bb931df
SHA512

f00a0e6fbe4733a5346d6cf2e1e6a3c3ffd3ef3e9fd3fc0e1a382c16bb88d199d2d71c9a39b915cc0057f434d0eb77cc21492bb35e1e9ed31d280ac89343ad9c
SSDEEP

6144:+TbDkbqcNYS996KFifeVjBpeExgVTFSXFoMc5RhCaL37kGbrKhYcR7tjAeCXTTzm:EbYecW7KEZlPzCy37kGnKhV5qJXTnk1H

Score

10^/10

darkcomet y.s.m defense_evasion discovery persistence rat trojan upx

Malware Config

Extracted

Family

darkcomet

Botnet

Y.S.M

microsft.redirectme.net:1603

Mutex

DC_MUTEX-UF59SW5

Attributes

InstallPath
MSDCSC\NvidiaaStrreamer.exe
gencode
CSknSw2UGJAw
install
true
offline_keylogger
true
password
01061660256
persistence
true
reg_key
nvdiaxnd

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\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Users\\Admin\\AppData\\Local\\Temp\\MSDCSC\\NvidiaaStrreamer.exe"	TempPrivateY.exe

Modifies firewall policy service 3 TTPs 3 IoCs

defense_evasion

Modify Registry

T1112

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

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

Modifies security service 2 TTPs 1 IoCs

defense_evasion

Modify Registry

T1112

Windows Service

T1543.003

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\wscsvc\Start = "4"	NvidiaaStrreamer.exe

Windows security bypass 2 TTPs 1 IoCs

defense_evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	NvidiaaStrreamer.exe

Executes dropped EXE 3 IoCs

pid	Process
2348	TempYP.exe
2056	TempPrivateY.exe
2900	NvidiaaStrreamer.exe

Loads dropped DLL 5 IoCs

pid	Process
2492	ee36ebfcb37f36c0f9f285132adefa64feebc0212b8f0930f0c2b2017bb931df.exe
2348	TempYP.exe
2348	TempYP.exe
2056	TempPrivateY.exe
2056	TempPrivateY.exe

Windows security modification 2 TTPs 1 IoCs

defense_evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	NvidiaaStrreamer.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Windows\CurrentVersion\Run\nvdiaxnd = "C:\\Users\\Admin\\AppData\\Local\\Temp\\MSDCSC\\NvidiaaStrreamer.exe"	TempPrivateY.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Windows\CurrentVersion\Run\nvdiaxnd = "C:\\Users\\Admin\\AppData\\Local\\Temp\\MSDCSC\\NvidiaaStrreamer.exe"	NvidiaaStrreamer.exe

UPX packed file 16 IoCs

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

upx

resource	yara_rule
behavioral1/files/0x00060000000186c8-23.dat	upx
behavioral1/memory/2056-26-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2900-43-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2056-85-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2900-86-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2900-87-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2900-88-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2900-89-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2900-90-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2900-91-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2900-92-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2900-93-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2900-94-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2900-95-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2900-96-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2900-97-0x0000000000400000-0x00000000004B7000-memory.dmp	upx

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 5 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	ee36ebfcb37f36c0f9f285132adefa64feebc0212b8f0930f0c2b2017bb931df.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	TempYP.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	TempPrivateY.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	NvidiaaStrreamer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	notepad.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2900	NvidiaaStrreamer.exe

Suspicious use of AdjustPrivilegeToken 46 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	2056	TempPrivateY.exe
Token: SeSecurityPrivilege	2056	TempPrivateY.exe
Token: SeTakeOwnershipPrivilege	2056	TempPrivateY.exe
Token: SeLoadDriverPrivilege	2056	TempPrivateY.exe
Token: SeSystemProfilePrivilege	2056	TempPrivateY.exe
Token: SeSystemtimePrivilege	2056	TempPrivateY.exe
Token: SeProfSingleProcessPrivilege	2056	TempPrivateY.exe
Token: SeIncBasePriorityPrivilege	2056	TempPrivateY.exe
Token: SeCreatePagefilePrivilege	2056	TempPrivateY.exe
Token: SeBackupPrivilege	2056	TempPrivateY.exe
Token: SeRestorePrivilege	2056	TempPrivateY.exe
Token: SeShutdownPrivilege	2056	TempPrivateY.exe
Token: SeDebugPrivilege	2056	TempPrivateY.exe
Token: SeSystemEnvironmentPrivilege	2056	TempPrivateY.exe
Token: SeChangeNotifyPrivilege	2056	TempPrivateY.exe
Token: SeRemoteShutdownPrivilege	2056	TempPrivateY.exe
Token: SeUndockPrivilege	2056	TempPrivateY.exe
Token: SeManageVolumePrivilege	2056	TempPrivateY.exe
Token: SeImpersonatePrivilege	2056	TempPrivateY.exe
Token: SeCreateGlobalPrivilege	2056	TempPrivateY.exe
Token: 33	2056	TempPrivateY.exe
Token: 34	2056	TempPrivateY.exe
Token: 35	2056	TempPrivateY.exe
Token: SeIncreaseQuotaPrivilege	2900	NvidiaaStrreamer.exe
Token: SeSecurityPrivilege	2900	NvidiaaStrreamer.exe
Token: SeTakeOwnershipPrivilege	2900	NvidiaaStrreamer.exe
Token: SeLoadDriverPrivilege	2900	NvidiaaStrreamer.exe
Token: SeSystemProfilePrivilege	2900	NvidiaaStrreamer.exe
Token: SeSystemtimePrivilege	2900	NvidiaaStrreamer.exe
Token: SeProfSingleProcessPrivilege	2900	NvidiaaStrreamer.exe
Token: SeIncBasePriorityPrivilege	2900	NvidiaaStrreamer.exe
Token: SeCreatePagefilePrivilege	2900	NvidiaaStrreamer.exe
Token: SeBackupPrivilege	2900	NvidiaaStrreamer.exe
Token: SeRestorePrivilege	2900	NvidiaaStrreamer.exe
Token: SeShutdownPrivilege	2900	NvidiaaStrreamer.exe
Token: SeDebugPrivilege	2900	NvidiaaStrreamer.exe
Token: SeSystemEnvironmentPrivilege	2900	NvidiaaStrreamer.exe
Token: SeChangeNotifyPrivilege	2900	NvidiaaStrreamer.exe
Token: SeRemoteShutdownPrivilege	2900	NvidiaaStrreamer.exe
Token: SeUndockPrivilege	2900	NvidiaaStrreamer.exe
Token: SeManageVolumePrivilege	2900	NvidiaaStrreamer.exe
Token: SeImpersonatePrivilege	2900	NvidiaaStrreamer.exe
Token: SeCreateGlobalPrivilege	2900	NvidiaaStrreamer.exe
Token: 33	2900	NvidiaaStrreamer.exe
Token: 34	2900	NvidiaaStrreamer.exe
Token: 35	2900	NvidiaaStrreamer.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2900	NvidiaaStrreamer.exe

Suspicious use of WriteProcessMemory 35 IoCs

description	pid	Process	procid_target
PID 2492 wrote to memory of 2348	2492	ee36ebfcb37f36c0f9f285132adefa64feebc0212b8f0930f0c2b2017bb931df.exe	30
PID 2492 wrote to memory of 2348	2492	ee36ebfcb37f36c0f9f285132adefa64feebc0212b8f0930f0c2b2017bb931df.exe	30
PID 2492 wrote to memory of 2348	2492	ee36ebfcb37f36c0f9f285132adefa64feebc0212b8f0930f0c2b2017bb931df.exe	30
PID 2492 wrote to memory of 2348	2492	ee36ebfcb37f36c0f9f285132adefa64feebc0212b8f0930f0c2b2017bb931df.exe	30
PID 2348 wrote to memory of 2056	2348	TempYP.exe	31
PID 2348 wrote to memory of 2056	2348	TempYP.exe	31
PID 2348 wrote to memory of 2056	2348	TempYP.exe	31
PID 2348 wrote to memory of 2056	2348	TempYP.exe	31
PID 2056 wrote to memory of 2900	2056	TempPrivateY.exe	32
PID 2056 wrote to memory of 2900	2056	TempPrivateY.exe	32
PID 2056 wrote to memory of 2900	2056	TempPrivateY.exe	32
PID 2056 wrote to memory of 2900	2056	TempPrivateY.exe	32
PID 2900 wrote to memory of 2740	2900	NvidiaaStrreamer.exe	33
PID 2900 wrote to memory of 2740	2900	NvidiaaStrreamer.exe	33
PID 2900 wrote to memory of 2740	2900	NvidiaaStrreamer.exe	33
PID 2900 wrote to memory of 2740	2900	NvidiaaStrreamer.exe	33
PID 2900 wrote to memory of 2740	2900	NvidiaaStrreamer.exe	33
PID 2900 wrote to memory of 2740	2900	NvidiaaStrreamer.exe	33
PID 2900 wrote to memory of 2740	2900	NvidiaaStrreamer.exe	33
PID 2900 wrote to memory of 2740	2900	NvidiaaStrreamer.exe	33
PID 2900 wrote to memory of 2740	2900	NvidiaaStrreamer.exe	33
PID 2900 wrote to memory of 2740	2900	NvidiaaStrreamer.exe	33
PID 2900 wrote to memory of 2740	2900	NvidiaaStrreamer.exe	33
PID 2900 wrote to memory of 2740	2900	NvidiaaStrreamer.exe	33
PID 2900 wrote to memory of 2740	2900	NvidiaaStrreamer.exe	33
PID 2900 wrote to memory of 2740	2900	NvidiaaStrreamer.exe	33
PID 2900 wrote to memory of 2740	2900	NvidiaaStrreamer.exe	33
PID 2900 wrote to memory of 2740	2900	NvidiaaStrreamer.exe	33
PID 2900 wrote to memory of 2740	2900	NvidiaaStrreamer.exe	33
PID 2900 wrote to memory of 2740	2900	NvidiaaStrreamer.exe	33
PID 2900 wrote to memory of 2740	2900	NvidiaaStrreamer.exe	33
PID 2900 wrote to memory of 2740	2900	NvidiaaStrreamer.exe	33
PID 2900 wrote to memory of 2740	2900	NvidiaaStrreamer.exe	33
PID 2900 wrote to memory of 2740	2900	NvidiaaStrreamer.exe	33
PID 2900 wrote to memory of 2740	2900	NvidiaaStrreamer.exe	33

C:\Users\Admin\AppData\Local\Temp\ee36ebfcb37f36c0f9f285132adefa64feebc0212b8f0930f0c2b2017bb931df.exe
"C:\Users\Admin\AppData\Local\Temp\ee36ebfcb37f36c0f9f285132adefa64feebc0212b8f0930f0c2b2017bb931df.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2492
- C:\Users\Admin\AppData\Local\TempYP.exe
  "C:\Users\Admin\AppData\Local\TempYP.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2348
- - C:\Users\Admin\AppData\Local\TempPrivateY.exe
    "C:\Users\Admin\AppData\Local\TempPrivateY.exe"
    3⤵
    - Modifies WinLogon for persistence
    - Executes dropped EXE
    - Loads dropped DLL
    - Adds Run key to start application
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:2056
  - - C:\Users\Admin\AppData\Local\Temp\MSDCSC\NvidiaaStrreamer.exe
      "C:\Users\Admin\AppData\Local\Temp\MSDCSC\NvidiaaStrreamer.exe"
      4⤵
      Modifies firewall policy service
      Modifies security service
      Windows security bypass
      Executes dropped EXE
      Windows security modification
      Adds Run key to start application
      System Location Discovery: System Language Discovery
      Suspicious behavior: GetForegroundWindowSpam
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of SetWindowsHookEx
      Suspicious use of WriteProcessMemory
      PID:2900
    - - C:\Windows\SysWOW64\notepad.exe
        
        notepad
        5⤵
        System Location Discovery: System Language Discovery
        
        PID:2740

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Create or Modify System Process

T1543

Windows Service

T1543.003

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Create or Modify System Process

T1543

Windows Service

T1543.003

Defense Evasion

Impair Defenses

T1562

Disable or Modify System Firewall

T1562.004

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\TempPrivateY.exe

Filesize
251KB

MD5
f662fd5fcfecb7a8760845a3a2d7009c

SHA1
5b66cc9ae4cccdb16395c5fd5f4a5489a6243191

SHA256
f536393b307a1c6ed2f83bcffafd024473d0398d026815fdd169786b0fa06619

SHA512
11666a075b197590a9d7118b7fb3c669d9e8cda7b394e0c094dc6fa41eaed66905821b5ab279b1f8fbf5cc550d3385a4ea6e693429a185ad1f84f5ed18b83827

Download Submit
\Users\Admin\AppData\Local\TempYP.exe

Filesize
501KB

MD5
e2ff4b23c1ed9f8235aed9bac00ada99

SHA1
4effd801928ccc3e1dd152e6bc3d6e7573ccaff0

SHA256
e2525421f00cd946d6cf552b1919f47ca880cc5962533aaa58efc40b0c112029

SHA512
ac1425907e69547d90ad27a2239ccc32478359fa66b4e893330858f1d7d3772c61482ec4be472ad6f0d7753010c66af865d298bc6302553a9d5d78433ea21078

Download Submit
memory/2056-85-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2056-42-0x0000000004060000-0x0000000004117000-memory.dmp

Filesize
732KB

Download
memory/2056-40-0x0000000004060000-0x0000000004117000-memory.dmp

Filesize
732KB

Download
memory/2056-26-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2348-12-0x0000000074250000-0x00000000747FB000-memory.dmp

Filesize
5.7MB

Download
memory/2348-15-0x0000000074250000-0x00000000747FB000-memory.dmp

Filesize
5.7MB

Download
memory/2348-13-0x0000000074250000-0x00000000747FB000-memory.dmp

Filesize
5.7MB

Download
memory/2348-24-0x0000000074250000-0x00000000747FB000-memory.dmp

Filesize
5.7MB

Download
memory/2348-25-0x00000000052B0000-0x0000000005367000-memory.dmp

Filesize
732KB

Download
memory/2348-28-0x0000000074250000-0x00000000747FB000-memory.dmp

Filesize
5.7MB

Download
memory/2348-27-0x00000000052B0000-0x0000000005367000-memory.dmp

Filesize
732KB

Download
memory/2348-11-0x0000000074250000-0x00000000747FB000-memory.dmp

Filesize
5.7MB

Download
memory/2348-10-0x0000000074250000-0x00000000747FB000-memory.dmp

Filesize
5.7MB

Download
memory/2492-0-0x0000000074251000-0x0000000074252000-memory.dmp

Filesize
4KB

Download
memory/2492-1-0x0000000074250000-0x00000000747FB000-memory.dmp

Filesize
5.7MB

Download
memory/2492-44-0x0000000074250000-0x00000000747FB000-memory.dmp

Filesize
5.7MB

Download
memory/2492-2-0x0000000074250000-0x00000000747FB000-memory.dmp

Filesize
5.7MB

Download
memory/2740-46-0x00000000000C0000-0x00000000000C1000-memory.dmp

Filesize
4KB

Download
memory/2740-84-0x00000000002A0000-0x00000000002A1000-memory.dmp

Filesize
4KB

Download
memory/2900-90-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2900-86-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2900-87-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2900-88-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2900-89-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2900-43-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2900-91-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2900-92-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2900-93-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2900-94-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2900-95-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2900-96-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2900-97-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads