darkcomet | 8c9ff44e17e358515172280af70a9017cbf44e937146922750147476486e5d71

Analysis

max time kernel
150s
max time network
18s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
16-10-2024 00:58

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General

Target

8c9ff44e17e358515172280af70a9017cbf44e937146922750147476486e5d71.exe
Size

520KB
MD5

a005168ca78727676148bcd8a93047de
SHA1

640b8c6ddeafb34f244584f99d779dd5c8cb4de2
SHA256

8c9ff44e17e358515172280af70a9017cbf44e937146922750147476486e5d71
SHA512

6b84ba7944b2c8bff3037ccad0974a2ff8f8cf9a60576f9fd3c771c43f6e91e3680e9c015a8e0007a084a0a414213f07ad9845f650a5518e5c77563c1fff8131
SSDEEP

6144:f9GGo2CwtGg6eeihEfph2CMvvqqSaYwpncOeC66AOa0aFtVEQfTo1ozVqMb4:f9fC3hh29Ya77A90aFtDfT5IMb4

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

Executes dropped EXE 3 IoCs

Processes:

winupd.exewinupd.exewinupd.exe

pid	Process
2908	winupd.exe
2880	winupd.exe
3048	winupd.exe

Loads dropped DLL 2 IoCs

Processes:

8c9ff44e17e358515172280af70a9017cbf44e937146922750147476486e5d71.exe

pid	Process
2744	8c9ff44e17e358515172280af70a9017cbf44e937146922750147476486e5d71.exe
2744	8c9ff44e17e358515172280af70a9017cbf44e937146922750147476486e5d71.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

reg.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Windows\CurrentVersion\Run\WinUpdate = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\winupd.exe -notray"	reg.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

8c9ff44e17e358515172280af70a9017cbf44e937146922750147476486e5d71.exewinupd.exe

description	pid	Process	procid_target
PID 2052 set thread context of 2744	2052	8c9ff44e17e358515172280af70a9017cbf44e937146922750147476486e5d71.exe	29
PID 2908 set thread context of 2880	2908	winupd.exe	31
PID 2908 set thread context of 3048	2908	winupd.exe	32

UPX packed file 27 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/3048-63-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/3048-60-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/3048-57-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/3048-53-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/3048-51-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/3048-72-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/3048-74-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/3048-75-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/3048-73-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/3048-78-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/3048-77-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/3048-81-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/3048-82-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/3048-83-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/3048-84-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/3048-85-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/3048-86-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/3048-87-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/3048-88-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/3048-89-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/3048-90-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/3048-91-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/3048-92-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/3048-93-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/3048-94-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/3048-95-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/3048-96-0x0000000000400000-0x00000000004B7000-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

Processes:

8c9ff44e17e358515172280af70a9017cbf44e937146922750147476486e5d71.exewinupd.exewinupd.exewinupd.exeipconfig.execmd.exereg.exe8c9ff44e17e358515172280af70a9017cbf44e937146922750147476486e5d71.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	8c9ff44e17e358515172280af70a9017cbf44e937146922750147476486e5d71.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	8c9ff44e17e358515172280af70a9017cbf44e937146922750147476486e5d71.exe

Gathers network information 2 TTPs 1 IoCs

Uses commandline utility to view network configuration.

System Information Discovery

T1082

Command and Scripting Interpreter

T1059

Processes:

ipconfig.exe

pid	Process
2696	ipconfig.exe

Modifies registry key 1 TTPs 1 IoCs

Modify Registry

T1112

Processes:

reg.exe

pid	Process
1928	reg.exe

Suspicious use of AdjustPrivilegeToken 23 IoCs

Processes:

winupd.exe

description	pid	Process
Token: SeIncreaseQuotaPrivilege	3048	winupd.exe
Token: SeSecurityPrivilege	3048	winupd.exe
Token: SeTakeOwnershipPrivilege	3048	winupd.exe
Token: SeLoadDriverPrivilege	3048	winupd.exe
Token: SeSystemProfilePrivilege	3048	winupd.exe
Token: SeSystemtimePrivilege	3048	winupd.exe
Token: SeProfSingleProcessPrivilege	3048	winupd.exe
Token: SeIncBasePriorityPrivilege	3048	winupd.exe
Token: SeCreatePagefilePrivilege	3048	winupd.exe
Token: SeBackupPrivilege	3048	winupd.exe
Token: SeRestorePrivilege	3048	winupd.exe
Token: SeShutdownPrivilege	3048	winupd.exe
Token: SeDebugPrivilege	3048	winupd.exe
Token: SeSystemEnvironmentPrivilege	3048	winupd.exe
Token: SeChangeNotifyPrivilege	3048	winupd.exe
Token: SeRemoteShutdownPrivilege	3048	winupd.exe
Token: SeUndockPrivilege	3048	winupd.exe
Token: SeManageVolumePrivilege	3048	winupd.exe
Token: SeImpersonatePrivilege	3048	winupd.exe
Token: SeCreateGlobalPrivilege	3048	winupd.exe
Token: 33	3048	winupd.exe
Token: 34	3048	winupd.exe
Token: 35	3048	winupd.exe

Suspicious use of SetWindowsHookEx 5 IoCs

Processes:

8c9ff44e17e358515172280af70a9017cbf44e937146922750147476486e5d71.exe8c9ff44e17e358515172280af70a9017cbf44e937146922750147476486e5d71.exewinupd.exewinupd.exewinupd.exe

pid	Process
2052	8c9ff44e17e358515172280af70a9017cbf44e937146922750147476486e5d71.exe
2744	8c9ff44e17e358515172280af70a9017cbf44e937146922750147476486e5d71.exe
2908	winupd.exe
2880	winupd.exe
3048	winupd.exe

Suspicious use of WriteProcessMemory 44 IoCs

Processes:

8c9ff44e17e358515172280af70a9017cbf44e937146922750147476486e5d71.exe8c9ff44e17e358515172280af70a9017cbf44e937146922750147476486e5d71.exewinupd.exewinupd.exeipconfig.execmd.exe

description	pid	Process	procid_target
PID 2052 wrote to memory of 2744	2052	8c9ff44e17e358515172280af70a9017cbf44e937146922750147476486e5d71.exe	29
PID 2052 wrote to memory of 2744	2052	8c9ff44e17e358515172280af70a9017cbf44e937146922750147476486e5d71.exe	29
PID 2052 wrote to memory of 2744	2052	8c9ff44e17e358515172280af70a9017cbf44e937146922750147476486e5d71.exe	29
PID 2052 wrote to memory of 2744	2052	8c9ff44e17e358515172280af70a9017cbf44e937146922750147476486e5d71.exe	29
PID 2052 wrote to memory of 2744	2052	8c9ff44e17e358515172280af70a9017cbf44e937146922750147476486e5d71.exe	29
PID 2052 wrote to memory of 2744	2052	8c9ff44e17e358515172280af70a9017cbf44e937146922750147476486e5d71.exe	29
PID 2052 wrote to memory of 2744	2052	8c9ff44e17e358515172280af70a9017cbf44e937146922750147476486e5d71.exe	29
PID 2052 wrote to memory of 2744	2052	8c9ff44e17e358515172280af70a9017cbf44e937146922750147476486e5d71.exe	29
PID 2052 wrote to memory of 2744	2052	8c9ff44e17e358515172280af70a9017cbf44e937146922750147476486e5d71.exe	29
PID 2744 wrote to memory of 2908	2744	8c9ff44e17e358515172280af70a9017cbf44e937146922750147476486e5d71.exe	30
PID 2744 wrote to memory of 2908	2744	8c9ff44e17e358515172280af70a9017cbf44e937146922750147476486e5d71.exe	30
PID 2744 wrote to memory of 2908	2744	8c9ff44e17e358515172280af70a9017cbf44e937146922750147476486e5d71.exe	30
PID 2744 wrote to memory of 2908	2744	8c9ff44e17e358515172280af70a9017cbf44e937146922750147476486e5d71.exe	30
PID 2908 wrote to memory of 2880	2908	winupd.exe	31
PID 2908 wrote to memory of 2880	2908	winupd.exe	31
PID 2908 wrote to memory of 2880	2908	winupd.exe	31
PID 2908 wrote to memory of 2880	2908	winupd.exe	31
PID 2908 wrote to memory of 2880	2908	winupd.exe	31
PID 2908 wrote to memory of 2880	2908	winupd.exe	31
PID 2908 wrote to memory of 2880	2908	winupd.exe	31
PID 2908 wrote to memory of 2880	2908	winupd.exe	31
PID 2908 wrote to memory of 2880	2908	winupd.exe	31
PID 2908 wrote to memory of 3048	2908	winupd.exe	32
PID 2908 wrote to memory of 3048	2908	winupd.exe	32
PID 2908 wrote to memory of 3048	2908	winupd.exe	32
PID 2908 wrote to memory of 3048	2908	winupd.exe	32
PID 2908 wrote to memory of 3048	2908	winupd.exe	32
PID 2908 wrote to memory of 3048	2908	winupd.exe	32
PID 2908 wrote to memory of 3048	2908	winupd.exe	32
PID 2908 wrote to memory of 3048	2908	winupd.exe	32
PID 2880 wrote to memory of 2696	2880	winupd.exe	33
PID 2880 wrote to memory of 2696	2880	winupd.exe	33
PID 2880 wrote to memory of 2696	2880	winupd.exe	33
PID 2880 wrote to memory of 2696	2880	winupd.exe	33
PID 2880 wrote to memory of 2696	2880	winupd.exe	33
PID 2880 wrote to memory of 2696	2880	winupd.exe	33
PID 2696 wrote to memory of 952	2696	ipconfig.exe	35
PID 2696 wrote to memory of 952	2696	ipconfig.exe	35
PID 2696 wrote to memory of 952	2696	ipconfig.exe	35
PID 2696 wrote to memory of 952	2696	ipconfig.exe	35
PID 952 wrote to memory of 1928	952	cmd.exe	37
PID 952 wrote to memory of 1928	952	cmd.exe	37
PID 952 wrote to memory of 1928	952	cmd.exe	37
PID 952 wrote to memory of 1928	952	cmd.exe	37

C:\Users\Admin\AppData\Local\Temp\8c9ff44e17e358515172280af70a9017cbf44e937146922750147476486e5d71.exe
"C:\Users\Admin\AppData\Local\Temp\8c9ff44e17e358515172280af70a9017cbf44e937146922750147476486e5d71.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2052
- C:\Users\Admin\AppData\Local\Temp\8c9ff44e17e358515172280af70a9017cbf44e937146922750147476486e5d71.exe
  "C:\Users\Admin\AppData\Local\Temp\8c9ff44e17e358515172280af70a9017cbf44e937146922750147476486e5d71.exe"
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2744
- - 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:2908
  - - 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:2880
    - - 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:2696
      - C:\Windows\SysWOW64\cmd.exe
        
        cmd /c ""C:\Users\Admin\AppData\Local\Temp\BKYUCWYM.bat" "
        6⤵
        System Location Discovery: System Language Discovery
        Suspicious use of WriteProcessMemory
        
        PID:952
        
        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:1928
  - - 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:3048

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\BKYUCWYM.bat

Filesize
151B

MD5
cac890d00365d07b9ca89def17cc3a36

SHA1
6fa99679ede791c16b5d3e6d243a98e8bbdb7eab

SHA256
4f98ddee89760080a5c8a93666d2f5c97be52b741265ef4d1ce9aaebf05f12da

SHA512
124dc0b18e13425bde43bcbbe2a99005928e398bffcb458d498aac9e754bc5b92b703270667800876c60b0801343f2de8c6b9a1eebafd80bb4f6d5dc295dd9f1

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

Filesize
520KB

MD5
99d32c2121842322cf807e6b89a793c4

SHA1
2ac8b9296c78c803c26f9c1c05f9403f546bdf44

SHA256
515347162b35ff087ef137f4c5362e77d8df7a47027727ac5e1d5f983e1cd6bf

SHA512
3a8b8ac2eaed7ab6712c3928bb904dd8a751dbb668660737200cbf5fffc6846a6ca9428cf2e7ff5b0486a9cfa1ec50b09a3bc66722c576e00dec179b37cca8bf

Download Submit
memory/2052-20-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2052-3-0x0000000000400000-0x0000000000483000-memory.dmp

Filesize
524KB

Download
memory/2052-4-0x0000000000400000-0x0000000000483000-memory.dmp

Filesize
524KB

Download
memory/2052-2-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2052-21-0x0000000000400000-0x0000000000483000-memory.dmp

Filesize
524KB

Download
memory/2696-70-0x0000000000080000-0x0000000000081000-memory.dmp

Filesize
4KB

Download
memory/2744-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2744-5-0x0000000000400000-0x0000000000407000-memory.dmp

Filesize
28KB

Download
memory/2744-7-0x0000000000400000-0x0000000000407000-memory.dmp

Filesize
28KB

Download
memory/2744-66-0x0000000000400000-0x0000000000407000-memory.dmp

Filesize
28KB

Download
memory/2744-9-0x0000000000400000-0x0000000000407000-memory.dmp

Filesize
28KB

Download
memory/2744-15-0x0000000000400000-0x0000000000407000-memory.dmp

Filesize
28KB

Download
memory/2880-79-0x0000000000400000-0x0000000000407000-memory.dmp

Filesize
28KB

Download
memory/2908-46-0x0000000000400000-0x0000000000483000-memory.dmp

Filesize
524KB

Download
memory/2908-62-0x0000000000400000-0x0000000000483000-memory.dmp

Filesize
524KB

Download
memory/2908-61-0x0000000000400000-0x0000000000483000-memory.dmp

Filesize
524KB

Download
memory/2908-59-0x0000000000400000-0x0000000000483000-memory.dmp

Filesize
524KB

Download
memory/3048-48-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/3048-82-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/3048-51-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/3048-57-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/3048-72-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/3048-74-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/3048-75-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/3048-73-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/3048-60-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/3048-78-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/3048-77-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/3048-63-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/3048-81-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/3048-53-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/3048-83-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/3048-84-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/3048-85-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/3048-86-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/3048-87-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/3048-88-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/3048-89-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/3048-90-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/3048-91-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/3048-92-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/3048-93-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/3048-94-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

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memory/3048-95-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

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memory/3048-96-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

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