darkcomet | b3fdd38a2a2283e52257a15180117f5fb6160992069cf14d72da61215ee5c007

Analysis

max time kernel
120s
max time network
117s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
02-12-2024 08:11

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General

Target

b3fdd38a2a2283e52257a15180117f5fb6160992069cf14d72da61215ee5c007N.exe
Size

520KB
MD5

3ff9c73f165440d7017a076dd9498f00
SHA1

b0ac814458edecb71785e05a20eac1df1b23ad26
SHA256

b3fdd38a2a2283e52257a15180117f5fb6160992069cf14d72da61215ee5c007
SHA512

6f32bd847f46db1dee28b11841d8de7743e4dfe858bc0844da9285d0acdd10ecf8c54d8c73f66c4c309e3ab8206b9885f4b68b334d2f6c4eca225f26a2ec4bf9
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
2024	winupd.exe
2196	winupd.exe
2720	winupd.exe

Loads dropped DLL 2 IoCs

pid	Process
1324	b3fdd38a2a2283e52257a15180117f5fb6160992069cf14d72da61215ee5c007N.exe
1324	b3fdd38a2a2283e52257a15180117f5fb6160992069cf14d72da61215ee5c007N.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-1-5-21-3290804112-2823094203-3137964600-1000\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 2372 set thread context of 1324	2372	b3fdd38a2a2283e52257a15180117f5fb6160992069cf14d72da61215ee5c007N.exe	30
PID 2024 set thread context of 2196	2024	winupd.exe	32
PID 2024 set thread context of 2720	2024	winupd.exe	33

UPX packed file 22 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2720-68-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2720-67-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2720-66-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2720-64-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2720-75-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2720-55-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2720-71-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2720-69-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2720-53-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2720-76-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2720-81-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2720-82-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2720-83-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2720-84-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2720-85-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2720-86-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2720-87-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2720-88-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2720-89-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2720-90-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2720-91-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2720-92-0x0000000000400000-0x00000000004B7000-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	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	b3fdd38a2a2283e52257a15180117f5fb6160992069cf14d72da61215ee5c007N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b3fdd38a2a2283e52257a15180117f5fb6160992069cf14d72da61215ee5c007N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winupd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winupd.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
2804	ipconfig.exe

Modifies registry key 1 TTPs 1 IoCs

Modify Registry

T1112

pid	Process
2592	reg.exe

Suspicious use of AdjustPrivilegeToken 23 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	2720	winupd.exe
Token: SeSecurityPrivilege	2720	winupd.exe
Token: SeTakeOwnershipPrivilege	2720	winupd.exe
Token: SeLoadDriverPrivilege	2720	winupd.exe
Token: SeSystemProfilePrivilege	2720	winupd.exe
Token: SeSystemtimePrivilege	2720	winupd.exe
Token: SeProfSingleProcessPrivilege	2720	winupd.exe
Token: SeIncBasePriorityPrivilege	2720	winupd.exe
Token: SeCreatePagefilePrivilege	2720	winupd.exe
Token: SeBackupPrivilege	2720	winupd.exe
Token: SeRestorePrivilege	2720	winupd.exe
Token: SeShutdownPrivilege	2720	winupd.exe
Token: SeDebugPrivilege	2720	winupd.exe
Token: SeSystemEnvironmentPrivilege	2720	winupd.exe
Token: SeChangeNotifyPrivilege	2720	winupd.exe
Token: SeRemoteShutdownPrivilege	2720	winupd.exe
Token: SeUndockPrivilege	2720	winupd.exe
Token: SeManageVolumePrivilege	2720	winupd.exe
Token: SeImpersonatePrivilege	2720	winupd.exe
Token: SeCreateGlobalPrivilege	2720	winupd.exe
Token: 33	2720	winupd.exe
Token: 34	2720	winupd.exe
Token: 35	2720	winupd.exe

Suspicious use of SetWindowsHookEx 5 IoCs

pid	Process
2372	b3fdd38a2a2283e52257a15180117f5fb6160992069cf14d72da61215ee5c007N.exe
1324	b3fdd38a2a2283e52257a15180117f5fb6160992069cf14d72da61215ee5c007N.exe
2024	winupd.exe
2196	winupd.exe
2720	winupd.exe

Suspicious use of WriteProcessMemory 44 IoCs

description	pid	Process	procid_target
PID 2372 wrote to memory of 1324	2372	b3fdd38a2a2283e52257a15180117f5fb6160992069cf14d72da61215ee5c007N.exe	30
PID 2372 wrote to memory of 1324	2372	b3fdd38a2a2283e52257a15180117f5fb6160992069cf14d72da61215ee5c007N.exe	30
PID 2372 wrote to memory of 1324	2372	b3fdd38a2a2283e52257a15180117f5fb6160992069cf14d72da61215ee5c007N.exe	30
PID 2372 wrote to memory of 1324	2372	b3fdd38a2a2283e52257a15180117f5fb6160992069cf14d72da61215ee5c007N.exe	30
PID 2372 wrote to memory of 1324	2372	b3fdd38a2a2283e52257a15180117f5fb6160992069cf14d72da61215ee5c007N.exe	30
PID 2372 wrote to memory of 1324	2372	b3fdd38a2a2283e52257a15180117f5fb6160992069cf14d72da61215ee5c007N.exe	30
PID 2372 wrote to memory of 1324	2372	b3fdd38a2a2283e52257a15180117f5fb6160992069cf14d72da61215ee5c007N.exe	30
PID 2372 wrote to memory of 1324	2372	b3fdd38a2a2283e52257a15180117f5fb6160992069cf14d72da61215ee5c007N.exe	30
PID 2372 wrote to memory of 1324	2372	b3fdd38a2a2283e52257a15180117f5fb6160992069cf14d72da61215ee5c007N.exe	30
PID 1324 wrote to memory of 2024	1324	b3fdd38a2a2283e52257a15180117f5fb6160992069cf14d72da61215ee5c007N.exe	31
PID 1324 wrote to memory of 2024	1324	b3fdd38a2a2283e52257a15180117f5fb6160992069cf14d72da61215ee5c007N.exe	31
PID 1324 wrote to memory of 2024	1324	b3fdd38a2a2283e52257a15180117f5fb6160992069cf14d72da61215ee5c007N.exe	31
PID 1324 wrote to memory of 2024	1324	b3fdd38a2a2283e52257a15180117f5fb6160992069cf14d72da61215ee5c007N.exe	31
PID 2024 wrote to memory of 2196	2024	winupd.exe	32
PID 2024 wrote to memory of 2196	2024	winupd.exe	32
PID 2024 wrote to memory of 2196	2024	winupd.exe	32
PID 2024 wrote to memory of 2196	2024	winupd.exe	32
PID 2024 wrote to memory of 2196	2024	winupd.exe	32
PID 2024 wrote to memory of 2196	2024	winupd.exe	32
PID 2024 wrote to memory of 2196	2024	winupd.exe	32
PID 2024 wrote to memory of 2196	2024	winupd.exe	32
PID 2024 wrote to memory of 2196	2024	winupd.exe	32
PID 2024 wrote to memory of 2720	2024	winupd.exe	33
PID 2024 wrote to memory of 2720	2024	winupd.exe	33
PID 2024 wrote to memory of 2720	2024	winupd.exe	33
PID 2024 wrote to memory of 2720	2024	winupd.exe	33
PID 2024 wrote to memory of 2720	2024	winupd.exe	33
PID 2024 wrote to memory of 2720	2024	winupd.exe	33
PID 2196 wrote to memory of 2804	2196	winupd.exe	34
PID 2196 wrote to memory of 2804	2196	winupd.exe	34
PID 2196 wrote to memory of 2804	2196	winupd.exe	34
PID 2196 wrote to memory of 2804	2196	winupd.exe	34
PID 2196 wrote to memory of 2804	2196	winupd.exe	34
PID 2196 wrote to memory of 2804	2196	winupd.exe	34
PID 2024 wrote to memory of 2720	2024	winupd.exe	33
PID 2024 wrote to memory of 2720	2024	winupd.exe	33
PID 2804 wrote to memory of 2620	2804	ipconfig.exe	36
PID 2804 wrote to memory of 2620	2804	ipconfig.exe	36
PID 2804 wrote to memory of 2620	2804	ipconfig.exe	36
PID 2804 wrote to memory of 2620	2804	ipconfig.exe	36
PID 2620 wrote to memory of 2592	2620	cmd.exe	38
PID 2620 wrote to memory of 2592	2620	cmd.exe	38
PID 2620 wrote to memory of 2592	2620	cmd.exe	38
PID 2620 wrote to memory of 2592	2620	cmd.exe	38

C:\Users\Admin\AppData\Local\Temp\b3fdd38a2a2283e52257a15180117f5fb6160992069cf14d72da61215ee5c007N.exe
"C:\Users\Admin\AppData\Local\Temp\b3fdd38a2a2283e52257a15180117f5fb6160992069cf14d72da61215ee5c007N.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2372
- C:\Users\Admin\AppData\Local\Temp\b3fdd38a2a2283e52257a15180117f5fb6160992069cf14d72da61215ee5c007N.exe
  "C:\Users\Admin\AppData\Local\Temp\b3fdd38a2a2283e52257a15180117f5fb6160992069cf14d72da61215ee5c007N.exe"
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1324
- - 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:2024
  - - 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:2196
    - - 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:2804
      - C:\Windows\SysWOW64\cmd.exe
        
        cmd /c ""C:\Users\Admin\AppData\Local\Temp\LHVTKUNM.bat" "
        6⤵
        System Location Discovery: System Language Discovery
        Suspicious use of WriteProcessMemory
        
        PID:2620
        
        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:2592
  - - 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:2720

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\LHVTKUNM.bat

Filesize
151B

MD5
cac890d00365d07b9ca89def17cc3a36

SHA1
6fa99679ede791c16b5d3e6d243a98e8bbdb7eab

SHA256
4f98ddee89760080a5c8a93666d2f5c97be52b741265ef4d1ce9aaebf05f12da

SHA512
124dc0b18e13425bde43bcbbe2a99005928e398bffcb458d498aac9e754bc5b92b703270667800876c60b0801343f2de8c6b9a1eebafd80bb4f6d5dc295dd9f1

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

Filesize
520KB

MD5
1f6162c22d790a27cb2b7009ecbb20d0

SHA1
5d248084467c93d37a71e63611f4d086ef27a3b6

SHA256
3bf11e1e005a146fe80b92b772b945cff9ab9fbdf37e44839353ed499ffff5cb

SHA512
4bce69c7d57eeda706fb2e8510b24a1b509b45b62395bb9aa2e85ec7c02c867ac4514f812600d4e79b6b91cc8cb77682b4a61ecd77185eb46fdf6dd388f8c91f

Download Submit
memory/1324-4-0x0000000000400000-0x0000000000407000-memory.dmp

Filesize
28KB

Download
memory/1324-12-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1324-20-0x0000000000400000-0x0000000000407000-memory.dmp

Filesize
28KB

Download
memory/1324-74-0x0000000000400000-0x0000000000407000-memory.dmp

Filesize
28KB

Download
memory/1324-8-0x0000000000400000-0x0000000000407000-memory.dmp

Filesize
28KB

Download
memory/1324-6-0x0000000000400000-0x0000000000407000-memory.dmp

Filesize
28KB

Download
memory/2024-35-0x0000000000400000-0x0000000000483000-memory.dmp

Filesize
524KB

Download
memory/2024-34-0x0000000000400000-0x0000000000483000-memory.dmp

Filesize
524KB

Download
memory/2024-70-0x0000000000400000-0x0000000000483000-memory.dmp

Filesize
524KB

Download
memory/2196-80-0x0000000000400000-0x0000000000407000-memory.dmp

Filesize
28KB

Download
memory/2372-3-0x0000000000400000-0x0000000000483000-memory.dmp

Filesize
524KB

Download
memory/2372-15-0x0000000000400000-0x0000000000483000-memory.dmp

Filesize
524KB

Download
memory/2372-2-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2372-17-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2372-19-0x0000000000400000-0x0000000000483000-memory.dmp

Filesize
524KB

Download
memory/2720-55-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2720-68-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2720-75-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2720-66-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2720-71-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2720-67-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2720-69-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2720-53-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2720-51-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2720-92-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2720-76-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2720-64-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2720-81-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2720-82-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2720-83-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2720-84-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2720-85-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2720-86-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2720-87-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2720-88-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2720-89-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2720-90-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2720-91-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2804-59-0x0000000000080000-0x0000000000081000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads