darkcomet | f9c87be6b800302e392ee1644db933638cc0728038f8731de02d4e6177965dad

Analysis

max time kernel
150s
max time network
17s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
09-11-2024 05:33

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General

Target

f9c87be6b800302e392ee1644db933638cc0728038f8731de02d4e6177965dad.exe
Size

520KB
MD5

607ffce854561505f0c289268b600c7f
SHA1

8fd0e58e50ac18e3669066a49dee474add33cf9b
SHA256

f9c87be6b800302e392ee1644db933638cc0728038f8731de02d4e6177965dad
SHA512

f5debd7dcd5d43852acf1a00b1e7633eb312e8e6c096c8b6cc225b16e18084aae6adcd42e1c5a052c28b826e7a1d9b8d3bad8ed9c77e2a7c8c5444bb6dc8224a
SSDEEP

6144:f9GGo2CwtGg6eeihEfph2CMvvqqSaYwpncOeC66AOa0aFtVEQfTo1ozVqMbm:f9fC3hh29Ya77A90aFtDfT5IMbm

Score

10^/10

darkcomet privateeye discovery persistence rat trojan upx

Malware Config

Extracted

Family

darkcomet

Botnet

PrivateEye

ratblackshades.no-ip.biz:1604

Mutex

DC_MUTEX-ACC1R98

Attributes

gencode
8GG5LVVGljSF
install
false
offline_keylogger
true
persistence
false

Signatures

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

Executes dropped EXE 3 IoCs

pid	Process
2812	winupd.exe
2224	winupd.exe
3012	winupd.exe

Loads dropped DLL 2 IoCs

pid	Process
2536	f9c87be6b800302e392ee1644db933638cc0728038f8731de02d4e6177965dad.exe
2536	f9c87be6b800302e392ee1644db933638cc0728038f8731de02d4e6177965dad.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Windows\CurrentVersion\Run\WinUpdate = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\winupd.exe -notray"	reg.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 1464 set thread context of 2536	1464	f9c87be6b800302e392ee1644db933638cc0728038f8731de02d4e6177965dad.exe	30
PID 2812 set thread context of 2224	2812	winupd.exe	32
PID 2812 set thread context of 3012	2812	winupd.exe	33

UPX packed file 25 IoCs

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

upx

resource	yara_rule
behavioral1/memory/3012-53-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/3012-70-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/3012-72-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/3012-71-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/3012-69-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/3012-68-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/3012-67-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/3012-59-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/3012-55-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/3012-76-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/3012-81-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/3012-82-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/3012-83-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/3012-84-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/3012-85-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/3012-86-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/3012-87-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/3012-88-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/3012-89-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/3012-90-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/3012-91-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/3012-92-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/3012-93-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/3012-94-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/3012-95-0x0000000000400000-0x00000000004B7000-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 8 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	f9c87be6b800302e392ee1644db933638cc0728038f8731de02d4e6177965dad.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winupd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winupd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winupd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ipconfig.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f9c87be6b800302e392ee1644db933638cc0728038f8731de02d4e6177965dad.exe

Gathers network information 2 TTPs 1 IoCs

Uses commandline utility to view network configuration.

System Information Discovery

T1082

Command and Scripting Interpreter

T1059

pid	Process
2700	ipconfig.exe

Modifies registry key 1 TTPs 1 IoCs

Modify Registry

T1112

pid	Process
2460	reg.exe

Suspicious use of AdjustPrivilegeToken 23 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	3012	winupd.exe
Token: SeSecurityPrivilege	3012	winupd.exe
Token: SeTakeOwnershipPrivilege	3012	winupd.exe
Token: SeLoadDriverPrivilege	3012	winupd.exe
Token: SeSystemProfilePrivilege	3012	winupd.exe
Token: SeSystemtimePrivilege	3012	winupd.exe
Token: SeProfSingleProcessPrivilege	3012	winupd.exe
Token: SeIncBasePriorityPrivilege	3012	winupd.exe
Token: SeCreatePagefilePrivilege	3012	winupd.exe
Token: SeBackupPrivilege	3012	winupd.exe
Token: SeRestorePrivilege	3012	winupd.exe
Token: SeShutdownPrivilege	3012	winupd.exe
Token: SeDebugPrivilege	3012	winupd.exe
Token: SeSystemEnvironmentPrivilege	3012	winupd.exe
Token: SeChangeNotifyPrivilege	3012	winupd.exe
Token: SeRemoteShutdownPrivilege	3012	winupd.exe
Token: SeUndockPrivilege	3012	winupd.exe
Token: SeManageVolumePrivilege	3012	winupd.exe
Token: SeImpersonatePrivilege	3012	winupd.exe
Token: SeCreateGlobalPrivilege	3012	winupd.exe
Token: 33	3012	winupd.exe
Token: 34	3012	winupd.exe
Token: 35	3012	winupd.exe

Suspicious use of SetWindowsHookEx 5 IoCs

pid	Process
1464	f9c87be6b800302e392ee1644db933638cc0728038f8731de02d4e6177965dad.exe
2536	f9c87be6b800302e392ee1644db933638cc0728038f8731de02d4e6177965dad.exe
2812	winupd.exe
2224	winupd.exe
3012	winupd.exe

Suspicious use of WriteProcessMemory 44 IoCs

description	pid	Process	procid_target
PID 1464 wrote to memory of 2536	1464	f9c87be6b800302e392ee1644db933638cc0728038f8731de02d4e6177965dad.exe	30
PID 1464 wrote to memory of 2536	1464	f9c87be6b800302e392ee1644db933638cc0728038f8731de02d4e6177965dad.exe	30
PID 1464 wrote to memory of 2536	1464	f9c87be6b800302e392ee1644db933638cc0728038f8731de02d4e6177965dad.exe	30
PID 1464 wrote to memory of 2536	1464	f9c87be6b800302e392ee1644db933638cc0728038f8731de02d4e6177965dad.exe	30
PID 1464 wrote to memory of 2536	1464	f9c87be6b800302e392ee1644db933638cc0728038f8731de02d4e6177965dad.exe	30
PID 1464 wrote to memory of 2536	1464	f9c87be6b800302e392ee1644db933638cc0728038f8731de02d4e6177965dad.exe	30
PID 1464 wrote to memory of 2536	1464	f9c87be6b800302e392ee1644db933638cc0728038f8731de02d4e6177965dad.exe	30
PID 1464 wrote to memory of 2536	1464	f9c87be6b800302e392ee1644db933638cc0728038f8731de02d4e6177965dad.exe	30
PID 1464 wrote to memory of 2536	1464	f9c87be6b800302e392ee1644db933638cc0728038f8731de02d4e6177965dad.exe	30
PID 2536 wrote to memory of 2812	2536	f9c87be6b800302e392ee1644db933638cc0728038f8731de02d4e6177965dad.exe	31
PID 2536 wrote to memory of 2812	2536	f9c87be6b800302e392ee1644db933638cc0728038f8731de02d4e6177965dad.exe	31
PID 2536 wrote to memory of 2812	2536	f9c87be6b800302e392ee1644db933638cc0728038f8731de02d4e6177965dad.exe	31
PID 2536 wrote to memory of 2812	2536	f9c87be6b800302e392ee1644db933638cc0728038f8731de02d4e6177965dad.exe	31
PID 2812 wrote to memory of 2224	2812	winupd.exe	32
PID 2812 wrote to memory of 2224	2812	winupd.exe	32
PID 2812 wrote to memory of 2224	2812	winupd.exe	32
PID 2812 wrote to memory of 2224	2812	winupd.exe	32
PID 2812 wrote to memory of 2224	2812	winupd.exe	32
PID 2812 wrote to memory of 2224	2812	winupd.exe	32
PID 2812 wrote to memory of 2224	2812	winupd.exe	32
PID 2812 wrote to memory of 2224	2812	winupd.exe	32
PID 2812 wrote to memory of 2224	2812	winupd.exe	32
PID 2812 wrote to memory of 3012	2812	winupd.exe	33
PID 2812 wrote to memory of 3012	2812	winupd.exe	33
PID 2812 wrote to memory of 3012	2812	winupd.exe	33
PID 2812 wrote to memory of 3012	2812	winupd.exe	33
PID 2812 wrote to memory of 3012	2812	winupd.exe	33
PID 2812 wrote to memory of 3012	2812	winupd.exe	33
PID 2812 wrote to memory of 3012	2812	winupd.exe	33
PID 2812 wrote to memory of 3012	2812	winupd.exe	33
PID 2224 wrote to memory of 2700	2224	winupd.exe	34
PID 2224 wrote to memory of 2700	2224	winupd.exe	34
PID 2224 wrote to memory of 2700	2224	winupd.exe	34
PID 2224 wrote to memory of 2700	2224	winupd.exe	34
PID 2224 wrote to memory of 2700	2224	winupd.exe	34
PID 2224 wrote to memory of 2700	2224	winupd.exe	34
PID 2700 wrote to memory of 1716	2700	ipconfig.exe	36
PID 2700 wrote to memory of 1716	2700	ipconfig.exe	36
PID 2700 wrote to memory of 1716	2700	ipconfig.exe	36
PID 2700 wrote to memory of 1716	2700	ipconfig.exe	36
PID 1716 wrote to memory of 2460	1716	cmd.exe	38
PID 1716 wrote to memory of 2460	1716	cmd.exe	38
PID 1716 wrote to memory of 2460	1716	cmd.exe	38
PID 1716 wrote to memory of 2460	1716	cmd.exe	38

C:\Users\Admin\AppData\Local\Temp\f9c87be6b800302e392ee1644db933638cc0728038f8731de02d4e6177965dad.exe
"C:\Users\Admin\AppData\Local\Temp\f9c87be6b800302e392ee1644db933638cc0728038f8731de02d4e6177965dad.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1464
- C:\Users\Admin\AppData\Local\Temp\f9c87be6b800302e392ee1644db933638cc0728038f8731de02d4e6177965dad.exe
  "C:\Users\Admin\AppData\Local\Temp\f9c87be6b800302e392ee1644db933638cc0728038f8731de02d4e6177965dad.exe"
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2536
- - C:\Users\Admin\AppData\Roaming\Microsoft\winupd.exe
    C:\Users\Admin\AppData\Roaming\Microsoft\winupd.exe -notray
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:2812
  - - C:\Users\Admin\AppData\Roaming\Microsoft\winupd.exe
      "C:\Users\Admin\AppData\Roaming\Microsoft\winupd.exe"
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      Suspicious use of SetWindowsHookEx
      Suspicious use of WriteProcessMemory
      PID:2224
    - - C:\Windows\SysWOW64\ipconfig.exe
        
        "C:\Windows\system32\ipconfig.exe"
        5⤵
        System Location Discovery: System Language Discovery
        Gathers network information
        Suspicious use of WriteProcessMemory
        
        PID:2700
      - C:\Windows\SysWOW64\cmd.exe
        
        cmd /c ""C:\Users\Admin\AppData\Local\Temp\WCVFRQSN.bat" "
        6⤵
        System Location Discovery: System Language Discovery
        Suspicious use of WriteProcessMemory
        
        PID:1716
        
        C:\Windows\SysWOW64\reg.exe
        
        REG ADD HKCU\Software\Microsoft\Windows\CurrentVersion\Run /v WinUpdate /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\Microsoft\winupd.exe -notray" /f
        7⤵
        Adds Run key to start application
        System Location Discovery: System Language Discovery
        Modifies registry key
        
        PID:2460
  - - C:\Users\Admin\AppData\Roaming\Microsoft\winupd.exe
      "C:\Users\Admin\AppData\Roaming\Microsoft\winupd.exe"
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of SetWindowsHookEx
      PID:3012

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

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\Temp\WCVFRQSN.bat

Filesize
151B

MD5
cac890d00365d07b9ca89def17cc3a36

SHA1
6fa99679ede791c16b5d3e6d243a98e8bbdb7eab

SHA256
4f98ddee89760080a5c8a93666d2f5c97be52b741265ef4d1ce9aaebf05f12da

SHA512
124dc0b18e13425bde43bcbbe2a99005928e398bffcb458d498aac9e754bc5b92b703270667800876c60b0801343f2de8c6b9a1eebafd80bb4f6d5dc295dd9f1

Download Submit
\Users\Admin\AppData\Roaming\Microsoft\winupd.exe

Filesize
520KB

MD5
39021a0313199db93834dceb1493429b

SHA1
ef6714c19fa15dd03205d3c2efb8d4887567c4d0

SHA256
c1ce35381908df3564d61316c72a86de7aab8401041ce118d7035a489dd20b6c

SHA512
450ce2840b8f6f02baf553c9fe380ffb7b02bc367c9505a5b3d3bb89ca2db913e60f7da4495a0e1f0f33f15e9450e74d8df5eec27e5ad9cfc83f6df37ecacc59

Download Submit
memory/1464-3-0x0000000000400000-0x0000000000483000-memory.dmp

Filesize
524KB

Download
memory/1464-17-0x0000000000400000-0x0000000000483000-memory.dmp

Filesize
524KB

Download
memory/1464-16-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1464-12-0x0000000000400000-0x0000000000483000-memory.dmp

Filesize
524KB

Download
memory/1464-2-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2224-80-0x0000000000400000-0x0000000000407000-memory.dmp

Filesize
28KB

Download
memory/2536-20-0x0000000000400000-0x0000000000407000-memory.dmp

Filesize
28KB

Download
memory/2536-4-0x0000000000400000-0x0000000000407000-memory.dmp

Filesize
28KB

Download
memory/2536-6-0x0000000000400000-0x0000000000407000-memory.dmp

Filesize
28KB

Download
memory/2536-8-0x0000000000400000-0x0000000000407000-memory.dmp

Filesize
28KB

Download
memory/2536-75-0x0000000000400000-0x0000000000407000-memory.dmp

Filesize
28KB

Download
memory/2536-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2700-65-0x0000000000080000-0x0000000000081000-memory.dmp

Filesize
4KB

Download
memory/2812-48-0x0000000000400000-0x0000000000483000-memory.dmp

Filesize
524KB

Download
memory/2812-63-0x0000000000400000-0x0000000000483000-memory.dmp

Filesize
524KB

Download
memory/2812-34-0x0000000000400000-0x0000000000483000-memory.dmp

Filesize
524KB

Download
memory/3012-82-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/3012-68-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/3012-83-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/3012-84-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/3012-71-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/3012-59-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/3012-55-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/3012-76-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/3012-53-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/3012-51-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/3012-72-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/3012-81-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/3012-95-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/3012-69-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/3012-67-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/3012-85-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/3012-86-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/3012-87-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/3012-88-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/3012-89-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/3012-90-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/3012-91-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/3012-92-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/3012-93-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/3012-94-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/3012-70-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads