darkcomet | b8f9e6fd17dec2e0a2569c79965f3127370089bd48c3f20871b5c79430060893

Analysis

max time kernel
120s
max time network
19s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
29-10-2024 09:22

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General

Target

b8f9e6fd17dec2e0a2569c79965f3127370089bd48c3f20871b5c79430060893N.exe
Size

520KB
MD5

74b0b03fff3d28b89f0e8027d8142530
SHA1

4c8d197f26635b263ac7200b9d0c8283b1d07351
SHA256

b8f9e6fd17dec2e0a2569c79965f3127370089bd48c3f20871b5c79430060893
SHA512

0922391e521f1b656230016382a2a684c9cbe96f45a5a291c99b93ee508c4d9344423c1144b37a968db94fa96ddc14213a16c2926c6f12c32dd59d87d9227856
SSDEEP

6144:f9GGo2CwtGg6eeihEfph2CMvvqqSaYwpncOeC66AOa0aFtVEQfTo1ozVqMbQ:f9fC3hh29Ya77A90aFtDfT5IMbQ

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

Processes:

winupd.exewinupd.exewinupd.exe

pid	Process
2840	winupd.exe
2760	winupd.exe
2860	winupd.exe

Loads dropped DLL 4 IoCs

Processes:

b8f9e6fd17dec2e0a2569c79965f3127370089bd48c3f20871b5c79430060893N.exewinupd.exe

pid	Process
1636	b8f9e6fd17dec2e0a2569c79965f3127370089bd48c3f20871b5c79430060893N.exe
1636	b8f9e6fd17dec2e0a2569c79965f3127370089bd48c3f20871b5c79430060893N.exe
2840	winupd.exe
2840	winupd.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:

b8f9e6fd17dec2e0a2569c79965f3127370089bd48c3f20871b5c79430060893N.exewinupd.exe

description	pid	Process	procid_target
PID 3052 set thread context of 1636	3052	b8f9e6fd17dec2e0a2569c79965f3127370089bd48c3f20871b5c79430060893N.exe	30
PID 2840 set thread context of 2760	2840	winupd.exe	32
PID 2840 set thread context of 2860	2840	winupd.exe	33

UPX packed file 23 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/2860-76-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2860-75-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2860-63-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2860-61-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2860-58-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2860-54-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2860-52-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2860-72-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2860-78-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2860-77-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2860-79-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2860-83-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2860-84-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2860-85-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2860-86-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2860-87-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2860-88-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2860-89-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2860-90-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2860-91-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2860-92-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2860-93-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2860-94-0x0000000000400000-0x00000000004B7000-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:

b8f9e6fd17dec2e0a2569c79965f3127370089bd48c3f20871b5c79430060893N.exeb8f9e6fd17dec2e0a2569c79965f3127370089bd48c3f20871b5c79430060893N.exewinupd.exewinupd.exewinupd.exeipconfig.execmd.exereg.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b8f9e6fd17dec2e0a2569c79965f3127370089bd48c3f20871b5c79430060893N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b8f9e6fd17dec2e0a2569c79965f3127370089bd48c3f20871b5c79430060893N.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

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
2688	ipconfig.exe

Modifies registry key 1 TTPs 1 IoCs

Modify Registry

T1112

Processes:

reg.exe

pid	Process
588	reg.exe

Suspicious use of AdjustPrivilegeToken 23 IoCs

Processes:

winupd.exe

description	pid	Process
Token: SeIncreaseQuotaPrivilege	2860	winupd.exe
Token: SeSecurityPrivilege	2860	winupd.exe
Token: SeTakeOwnershipPrivilege	2860	winupd.exe
Token: SeLoadDriverPrivilege	2860	winupd.exe
Token: SeSystemProfilePrivilege	2860	winupd.exe
Token: SeSystemtimePrivilege	2860	winupd.exe
Token: SeProfSingleProcessPrivilege	2860	winupd.exe
Token: SeIncBasePriorityPrivilege	2860	winupd.exe
Token: SeCreatePagefilePrivilege	2860	winupd.exe
Token: SeBackupPrivilege	2860	winupd.exe
Token: SeRestorePrivilege	2860	winupd.exe
Token: SeShutdownPrivilege	2860	winupd.exe
Token: SeDebugPrivilege	2860	winupd.exe
Token: SeSystemEnvironmentPrivilege	2860	winupd.exe
Token: SeChangeNotifyPrivilege	2860	winupd.exe
Token: SeRemoteShutdownPrivilege	2860	winupd.exe
Token: SeUndockPrivilege	2860	winupd.exe
Token: SeManageVolumePrivilege	2860	winupd.exe
Token: SeImpersonatePrivilege	2860	winupd.exe
Token: SeCreateGlobalPrivilege	2860	winupd.exe
Token: 33	2860	winupd.exe
Token: 34	2860	winupd.exe
Token: 35	2860	winupd.exe

Suspicious use of SetWindowsHookEx 5 IoCs

Processes:

b8f9e6fd17dec2e0a2569c79965f3127370089bd48c3f20871b5c79430060893N.exeb8f9e6fd17dec2e0a2569c79965f3127370089bd48c3f20871b5c79430060893N.exewinupd.exewinupd.exewinupd.exe

pid	Process
3052	b8f9e6fd17dec2e0a2569c79965f3127370089bd48c3f20871b5c79430060893N.exe
1636	b8f9e6fd17dec2e0a2569c79965f3127370089bd48c3f20871b5c79430060893N.exe
2840	winupd.exe
2760	winupd.exe
2860	winupd.exe

Suspicious use of WriteProcessMemory 44 IoCs

Processes:

b8f9e6fd17dec2e0a2569c79965f3127370089bd48c3f20871b5c79430060893N.exeb8f9e6fd17dec2e0a2569c79965f3127370089bd48c3f20871b5c79430060893N.exewinupd.exewinupd.exeipconfig.execmd.exe

description	pid	Process	procid_target
PID 3052 wrote to memory of 1636	3052	b8f9e6fd17dec2e0a2569c79965f3127370089bd48c3f20871b5c79430060893N.exe	30
PID 3052 wrote to memory of 1636	3052	b8f9e6fd17dec2e0a2569c79965f3127370089bd48c3f20871b5c79430060893N.exe	30
PID 3052 wrote to memory of 1636	3052	b8f9e6fd17dec2e0a2569c79965f3127370089bd48c3f20871b5c79430060893N.exe	30
PID 3052 wrote to memory of 1636	3052	b8f9e6fd17dec2e0a2569c79965f3127370089bd48c3f20871b5c79430060893N.exe	30
PID 3052 wrote to memory of 1636	3052	b8f9e6fd17dec2e0a2569c79965f3127370089bd48c3f20871b5c79430060893N.exe	30
PID 3052 wrote to memory of 1636	3052	b8f9e6fd17dec2e0a2569c79965f3127370089bd48c3f20871b5c79430060893N.exe	30
PID 3052 wrote to memory of 1636	3052	b8f9e6fd17dec2e0a2569c79965f3127370089bd48c3f20871b5c79430060893N.exe	30
PID 3052 wrote to memory of 1636	3052	b8f9e6fd17dec2e0a2569c79965f3127370089bd48c3f20871b5c79430060893N.exe	30
PID 3052 wrote to memory of 1636	3052	b8f9e6fd17dec2e0a2569c79965f3127370089bd48c3f20871b5c79430060893N.exe	30
PID 1636 wrote to memory of 2840	1636	b8f9e6fd17dec2e0a2569c79965f3127370089bd48c3f20871b5c79430060893N.exe	31
PID 1636 wrote to memory of 2840	1636	b8f9e6fd17dec2e0a2569c79965f3127370089bd48c3f20871b5c79430060893N.exe	31
PID 1636 wrote to memory of 2840	1636	b8f9e6fd17dec2e0a2569c79965f3127370089bd48c3f20871b5c79430060893N.exe	31
PID 1636 wrote to memory of 2840	1636	b8f9e6fd17dec2e0a2569c79965f3127370089bd48c3f20871b5c79430060893N.exe	31
PID 2840 wrote to memory of 2760	2840	winupd.exe	32
PID 2840 wrote to memory of 2760	2840	winupd.exe	32
PID 2840 wrote to memory of 2760	2840	winupd.exe	32
PID 2840 wrote to memory of 2760	2840	winupd.exe	32
PID 2840 wrote to memory of 2760	2840	winupd.exe	32
PID 2840 wrote to memory of 2760	2840	winupd.exe	32
PID 2840 wrote to memory of 2760	2840	winupd.exe	32
PID 2840 wrote to memory of 2760	2840	winupd.exe	32
PID 2840 wrote to memory of 2760	2840	winupd.exe	32
PID 2840 wrote to memory of 2860	2840	winupd.exe	33
PID 2840 wrote to memory of 2860	2840	winupd.exe	33
PID 2840 wrote to memory of 2860	2840	winupd.exe	33
PID 2840 wrote to memory of 2860	2840	winupd.exe	33
PID 2840 wrote to memory of 2860	2840	winupd.exe	33
PID 2840 wrote to memory of 2860	2840	winupd.exe	33
PID 2840 wrote to memory of 2860	2840	winupd.exe	33
PID 2840 wrote to memory of 2860	2840	winupd.exe	33
PID 2760 wrote to memory of 2688	2760	winupd.exe	34
PID 2760 wrote to memory of 2688	2760	winupd.exe	34
PID 2760 wrote to memory of 2688	2760	winupd.exe	34
PID 2760 wrote to memory of 2688	2760	winupd.exe	34
PID 2760 wrote to memory of 2688	2760	winupd.exe	34
PID 2760 wrote to memory of 2688	2760	winupd.exe	34
PID 2688 wrote to memory of 2592	2688	ipconfig.exe	36
PID 2688 wrote to memory of 2592	2688	ipconfig.exe	36
PID 2688 wrote to memory of 2592	2688	ipconfig.exe	36
PID 2688 wrote to memory of 2592	2688	ipconfig.exe	36
PID 2592 wrote to memory of 588	2592	cmd.exe	38
PID 2592 wrote to memory of 588	2592	cmd.exe	38
PID 2592 wrote to memory of 588	2592	cmd.exe	38
PID 2592 wrote to memory of 588	2592	cmd.exe	38

C:\Users\Admin\AppData\Local\Temp\b8f9e6fd17dec2e0a2569c79965f3127370089bd48c3f20871b5c79430060893N.exe
"C:\Users\Admin\AppData\Local\Temp\b8f9e6fd17dec2e0a2569c79965f3127370089bd48c3f20871b5c79430060893N.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3052
- C:\Users\Admin\AppData\Local\Temp\b8f9e6fd17dec2e0a2569c79965f3127370089bd48c3f20871b5c79430060893N.exe
  "C:\Users\Admin\AppData\Local\Temp\b8f9e6fd17dec2e0a2569c79965f3127370089bd48c3f20871b5c79430060893N.exe"
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1636
- - 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:2840
  - - 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:2760
    - - 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:2688
      - C:\Windows\SysWOW64\cmd.exe
        
        cmd /c ""C:\Users\Admin\AppData\Local\Temp\FSORUTVH.bat" "
        6⤵
        System Location Discovery: System Language Discovery
        Suspicious use of WriteProcessMemory
        
        PID:2592
        
        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:588
  - - 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:2860

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\FSORUTVH.bat

Filesize
151B

MD5
cac890d00365d07b9ca89def17cc3a36

SHA1
6fa99679ede791c16b5d3e6d243a98e8bbdb7eab

SHA256
4f98ddee89760080a5c8a93666d2f5c97be52b741265ef4d1ce9aaebf05f12da

SHA512
124dc0b18e13425bde43bcbbe2a99005928e398bffcb458d498aac9e754bc5b92b703270667800876c60b0801343f2de8c6b9a1eebafd80bb4f6d5dc295dd9f1

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

Filesize
520KB

MD5
16c8d4882873f4d60288b13811cfa7fe

SHA1
1fe04060d2cceedb52bf5d9c9dde12850c6706ba

SHA256
cc5225fd410812fcb3e98504646ae34596a853ce2935d1c60bd7bfb28d8c1b0a

SHA512
218b46be7c517908591bc5cdc4e6adcc6cc336c8857cf17062846689570d82ccd06ec05f3803ec3393aadd2d407a245bc4d814d4ef04e611e450a5c00686bdb6

Download Submit
memory/1636-14-0x0000000000400000-0x0000000000407000-memory.dmp

Filesize
28KB

Download
memory/1636-12-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1636-8-0x0000000000400000-0x0000000000407000-memory.dmp

Filesize
28KB

Download
memory/1636-6-0x0000000000400000-0x0000000000407000-memory.dmp

Filesize
28KB

Download
memory/1636-4-0x0000000000400000-0x0000000000407000-memory.dmp

Filesize
28KB

Download
memory/1636-71-0x0000000000400000-0x0000000000407000-memory.dmp

Filesize
28KB

Download
memory/2688-73-0x0000000000080000-0x0000000000081000-memory.dmp

Filesize
4KB

Download
memory/2760-81-0x0000000000400000-0x0000000000407000-memory.dmp

Filesize
28KB

Download
memory/2760-68-0x0000000000400000-0x0000000000407000-memory.dmp

Filesize
28KB

Download
memory/2840-64-0x0000000000400000-0x0000000000483000-memory.dmp

Filesize
524KB

Download
memory/2840-62-0x0000000000400000-0x0000000000483000-memory.dmp

Filesize
524KB

Download
memory/2840-42-0x0000000000400000-0x0000000000483000-memory.dmp

Filesize
524KB

Download
memory/2840-48-0x0000000000400000-0x0000000000483000-memory.dmp

Filesize
524KB

Download
memory/2860-78-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2860-79-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2860-63-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2860-76-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2860-61-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2860-58-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2860-54-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2860-52-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2860-50-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2860-94-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2860-72-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2860-93-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2860-77-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2860-75-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2860-92-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2860-91-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2860-83-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2860-84-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2860-85-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2860-86-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2860-87-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2860-88-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2860-89-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2860-90-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/3052-3-0x0000000000400000-0x0000000000483000-memory.dmp

Filesize
524KB

Download
memory/3052-18-0x0000000000400000-0x0000000000483000-memory.dmp

Filesize
524KB

Download
memory/3052-2-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3052-17-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download