darkcomet | 91e88bb385b5c2f85958df87943a1962b5b325f6f9083b5aaf42980e1980c37e

Analysis

max time kernel
120s
max time network
16s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
04-12-2024 01:50

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General

Target

91e88bb385b5c2f85958df87943a1962b5b325f6f9083b5aaf42980e1980c37eN.exe
Size

520KB
MD5

f5b01a29c59db1cc37d775818d620e00
SHA1

5599e81d4c8205e48e8edf26fda9cbe0679e842e
SHA256

91e88bb385b5c2f85958df87943a1962b5b325f6f9083b5aaf42980e1980c37e
SHA512

7d9033145e8edaf751ae8201f34ee92bd51f466e6fb74de74001cd85295906809256ad48b730ef3f125863a5a676fcd1bd6e3b08a27a57eda0048782afe6b065
SSDEEP

6144:f9GGo2CwtGg6eeihEfph2CMvvqqSaYwpncOeC66AOa0aFtVEQfTo1ozVqMbt:f9fC3hh29Ya77A90aFtDfT5IMbt

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
2332	winupd.exe
2812	winupd.exe
2036	winupd.exe

Loads dropped DLL 4 IoCs

pid	Process
1348	91e88bb385b5c2f85958df87943a1962b5b325f6f9083b5aaf42980e1980c37eN.exe
1348	91e88bb385b5c2f85958df87943a1962b5b325f6f9083b5aaf42980e1980c37eN.exe
2332	winupd.exe
2332	winupd.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-1-5-21-3533259084-2542256011-65585152-1000\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 2504 set thread context of 1348	2504	91e88bb385b5c2f85958df87943a1962b5b325f6f9083b5aaf42980e1980c37eN.exe	30
PID 2332 set thread context of 2812	2332	winupd.exe	32
PID 2332 set thread context of 2036	2332	winupd.exe	33

UPX packed file 24 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2036-58-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2036-64-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2036-62-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2036-73-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2036-76-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2036-78-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2036-77-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2036-75-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2036-74-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2036-54-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2036-52-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2036-83-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2036-84-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2036-85-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2036-86-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2036-87-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2036-88-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2036-89-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2036-90-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2036-91-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2036-92-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2036-93-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2036-94-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2036-95-0x0000000000400000-0x00000000004B7000-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	91e88bb385b5c2f85958df87943a1962b5b325f6f9083b5aaf42980e1980c37eN.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	91e88bb385b5c2f85958df87943a1962b5b325f6f9083b5aaf42980e1980c37eN.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
1988	ipconfig.exe

Modifies registry key 1 TTPs 1 IoCs

Modify Registry

T1112

pid	Process
684	reg.exe

Suspicious use of AdjustPrivilegeToken 23 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	2036	winupd.exe
Token: SeSecurityPrivilege	2036	winupd.exe
Token: SeTakeOwnershipPrivilege	2036	winupd.exe
Token: SeLoadDriverPrivilege	2036	winupd.exe
Token: SeSystemProfilePrivilege	2036	winupd.exe
Token: SeSystemtimePrivilege	2036	winupd.exe
Token: SeProfSingleProcessPrivilege	2036	winupd.exe
Token: SeIncBasePriorityPrivilege	2036	winupd.exe
Token: SeCreatePagefilePrivilege	2036	winupd.exe
Token: SeBackupPrivilege	2036	winupd.exe
Token: SeRestorePrivilege	2036	winupd.exe
Token: SeShutdownPrivilege	2036	winupd.exe
Token: SeDebugPrivilege	2036	winupd.exe
Token: SeSystemEnvironmentPrivilege	2036	winupd.exe
Token: SeChangeNotifyPrivilege	2036	winupd.exe
Token: SeRemoteShutdownPrivilege	2036	winupd.exe
Token: SeUndockPrivilege	2036	winupd.exe
Token: SeManageVolumePrivilege	2036	winupd.exe
Token: SeImpersonatePrivilege	2036	winupd.exe
Token: SeCreateGlobalPrivilege	2036	winupd.exe
Token: 33	2036	winupd.exe
Token: 34	2036	winupd.exe
Token: 35	2036	winupd.exe

Suspicious use of SetWindowsHookEx 5 IoCs

pid	Process
2504	91e88bb385b5c2f85958df87943a1962b5b325f6f9083b5aaf42980e1980c37eN.exe
1348	91e88bb385b5c2f85958df87943a1962b5b325f6f9083b5aaf42980e1980c37eN.exe
2332	winupd.exe
2812	winupd.exe
2036	winupd.exe

Suspicious use of WriteProcessMemory 44 IoCs

description	pid	Process	procid_target
PID 2504 wrote to memory of 1348	2504	91e88bb385b5c2f85958df87943a1962b5b325f6f9083b5aaf42980e1980c37eN.exe	30
PID 2504 wrote to memory of 1348	2504	91e88bb385b5c2f85958df87943a1962b5b325f6f9083b5aaf42980e1980c37eN.exe	30
PID 2504 wrote to memory of 1348	2504	91e88bb385b5c2f85958df87943a1962b5b325f6f9083b5aaf42980e1980c37eN.exe	30
PID 2504 wrote to memory of 1348	2504	91e88bb385b5c2f85958df87943a1962b5b325f6f9083b5aaf42980e1980c37eN.exe	30
PID 2504 wrote to memory of 1348	2504	91e88bb385b5c2f85958df87943a1962b5b325f6f9083b5aaf42980e1980c37eN.exe	30
PID 2504 wrote to memory of 1348	2504	91e88bb385b5c2f85958df87943a1962b5b325f6f9083b5aaf42980e1980c37eN.exe	30
PID 2504 wrote to memory of 1348	2504	91e88bb385b5c2f85958df87943a1962b5b325f6f9083b5aaf42980e1980c37eN.exe	30
PID 2504 wrote to memory of 1348	2504	91e88bb385b5c2f85958df87943a1962b5b325f6f9083b5aaf42980e1980c37eN.exe	30
PID 2504 wrote to memory of 1348	2504	91e88bb385b5c2f85958df87943a1962b5b325f6f9083b5aaf42980e1980c37eN.exe	30
PID 1348 wrote to memory of 2332	1348	91e88bb385b5c2f85958df87943a1962b5b325f6f9083b5aaf42980e1980c37eN.exe	31
PID 1348 wrote to memory of 2332	1348	91e88bb385b5c2f85958df87943a1962b5b325f6f9083b5aaf42980e1980c37eN.exe	31
PID 1348 wrote to memory of 2332	1348	91e88bb385b5c2f85958df87943a1962b5b325f6f9083b5aaf42980e1980c37eN.exe	31
PID 1348 wrote to memory of 2332	1348	91e88bb385b5c2f85958df87943a1962b5b325f6f9083b5aaf42980e1980c37eN.exe	31
PID 2332 wrote to memory of 2812	2332	winupd.exe	32
PID 2332 wrote to memory of 2812	2332	winupd.exe	32
PID 2332 wrote to memory of 2812	2332	winupd.exe	32
PID 2332 wrote to memory of 2812	2332	winupd.exe	32
PID 2332 wrote to memory of 2812	2332	winupd.exe	32
PID 2332 wrote to memory of 2812	2332	winupd.exe	32
PID 2332 wrote to memory of 2812	2332	winupd.exe	32
PID 2332 wrote to memory of 2812	2332	winupd.exe	32
PID 2332 wrote to memory of 2812	2332	winupd.exe	32
PID 2332 wrote to memory of 2036	2332	winupd.exe	33
PID 2332 wrote to memory of 2036	2332	winupd.exe	33
PID 2332 wrote to memory of 2036	2332	winupd.exe	33
PID 2332 wrote to memory of 2036	2332	winupd.exe	33
PID 2332 wrote to memory of 2036	2332	winupd.exe	33
PID 2332 wrote to memory of 2036	2332	winupd.exe	33
PID 2332 wrote to memory of 2036	2332	winupd.exe	33
PID 2332 wrote to memory of 2036	2332	winupd.exe	33
PID 2812 wrote to memory of 1988	2812	winupd.exe	34
PID 2812 wrote to memory of 1988	2812	winupd.exe	34
PID 2812 wrote to memory of 1988	2812	winupd.exe	34
PID 2812 wrote to memory of 1988	2812	winupd.exe	34
PID 2812 wrote to memory of 1988	2812	winupd.exe	34
PID 2812 wrote to memory of 1988	2812	winupd.exe	34
PID 1988 wrote to memory of 3024	1988	ipconfig.exe	36
PID 1988 wrote to memory of 3024	1988	ipconfig.exe	36
PID 1988 wrote to memory of 3024	1988	ipconfig.exe	36
PID 1988 wrote to memory of 3024	1988	ipconfig.exe	36
PID 3024 wrote to memory of 684	3024	cmd.exe	38
PID 3024 wrote to memory of 684	3024	cmd.exe	38
PID 3024 wrote to memory of 684	3024	cmd.exe	38
PID 3024 wrote to memory of 684	3024	cmd.exe	38

C:\Users\Admin\AppData\Local\Temp\91e88bb385b5c2f85958df87943a1962b5b325f6f9083b5aaf42980e1980c37eN.exe
"C:\Users\Admin\AppData\Local\Temp\91e88bb385b5c2f85958df87943a1962b5b325f6f9083b5aaf42980e1980c37eN.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2504
- C:\Users\Admin\AppData\Local\Temp\91e88bb385b5c2f85958df87943a1962b5b325f6f9083b5aaf42980e1980c37eN.exe
  "C:\Users\Admin\AppData\Local\Temp\91e88bb385b5c2f85958df87943a1962b5b325f6f9083b5aaf42980e1980c37eN.exe"
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1348
- - C:\Users\Admin\AppData\Roaming\Microsoft\winupd.exe
    C:\Users\Admin\AppData\Roaming\Microsoft\winupd.exe -notray
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:2332
  - - 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:2812
    - - 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:1988
      - C:\Windows\SysWOW64\cmd.exe
        
        cmd /c ""C:\Users\Admin\AppData\Local\Temp\AJWSBVXL.bat" "
        6⤵
        System Location Discovery: System Language Discovery
        Suspicious use of WriteProcessMemory
        
        PID:3024
        
        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:684
  - - 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:2036

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\AJWSBVXL.bat

Filesize
151B

MD5
cac890d00365d07b9ca89def17cc3a36

SHA1
6fa99679ede791c16b5d3e6d243a98e8bbdb7eab

SHA256
4f98ddee89760080a5c8a93666d2f5c97be52b741265ef4d1ce9aaebf05f12da

SHA512
124dc0b18e13425bde43bcbbe2a99005928e398bffcb458d498aac9e754bc5b92b703270667800876c60b0801343f2de8c6b9a1eebafd80bb4f6d5dc295dd9f1

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

Filesize
520KB

MD5
679b647d18f9f6e8e35824f0d53d10c1

SHA1
ba221f9d330a66f96a9f4d521aae340cd505c9cb

SHA256
3bc92493e73e77074deb1df39a65ee3e76bc5e8e90c262a5fd12af8acb8c1e73

SHA512
56cadbe19f1427943a93263df55be599f1a8abd3d46be86530a3bc3027a655ce8490d356cd7e26a4dd7d5fa942c1f1edab4ca19645227737ed091006f6963749

Download Submit
memory/1348-19-0x0000000000400000-0x0000000000407000-memory.dmp

Filesize
28KB

Download
memory/1348-12-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1348-8-0x0000000000400000-0x0000000000407000-memory.dmp

Filesize
28KB

Download
memory/1348-6-0x0000000000400000-0x0000000000407000-memory.dmp

Filesize
28KB

Download
memory/1348-4-0x0000000000400000-0x0000000000407000-memory.dmp

Filesize
28KB

Download
memory/1348-67-0x0000000000400000-0x0000000000407000-memory.dmp

Filesize
28KB

Download
memory/1988-71-0x0000000000080000-0x0000000000081000-memory.dmp

Filesize
4KB

Download
memory/2036-84-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2036-54-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2036-95-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2036-58-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2036-94-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2036-93-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2036-64-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2036-92-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2036-62-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2036-73-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2036-76-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2036-78-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2036-91-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2036-77-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2036-90-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2036-75-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2036-74-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2036-89-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2036-52-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2036-50-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2036-83-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2036-88-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2036-85-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2036-86-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2036-87-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2332-44-0x0000000000400000-0x0000000000483000-memory.dmp

Filesize
524KB

Download
memory/2332-63-0x0000000000400000-0x0000000000483000-memory.dmp

Filesize
524KB

Download
memory/2332-35-0x0000000000400000-0x0000000000483000-memory.dmp

Filesize
524KB

Download
memory/2504-3-0x0000000000400000-0x0000000000483000-memory.dmp

Filesize
524KB

Download
memory/2504-18-0x0000000000400000-0x0000000000483000-memory.dmp

Filesize
524KB

Download
memory/2504-16-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2504-2-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2812-82-0x0000000000400000-0x0000000000407000-memory.dmp

Filesize
28KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads