darkcomet | 69366a4a73f7d9fd02ebbfdc35e504b8ec6203571d3f4b99f94a7a25e994d53d

Analysis

max time kernel
150s
max time network
123s
platform
windows7_x64
resource
win7-20241023-en
resource tags

arch:x64arch:x86image:win7-20241023-enlocale:en-usos:windows7-x64system
submitted
22-12-2024 23:24

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General

Target

lab_samples/6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe
Size

658KB
MD5

f6351da84168d40fae8da0c156fbab0f
SHA1

1a2283c85bc5c655f5f2f77f27ec3a9412e8db7e
SHA256

6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363
SHA512

9948e83f004bb6d0edf14626660365e469dec444128e820f82066e73177f5de109d048fe226a9cbe95cfc6a99a9d4c501ab3f3900aa2e3677434f03d52694607
SSDEEP

12288:e9HFJ9rJxRX1uVVjoaWSoynxdO1FVBaOiRZTERfIhNkNCCLo9Ek5C/hn:qZ1xuVVjfFoynPaVBUR8f+kN10EBV

Score

10^/10

darkcomet guest16 discovery evasion persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

test213.no-ip.info:1604

Mutex

DC_MUTEX-KHNEW06

Attributes

InstallPath
MSDCSC\runddl32.exe
gencode
F6FE8i2BxCpu
install
true
offline_keylogger
true
persistence
true
reg_key
MicroUpdate

Signatures

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

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Users\\Admin\\AppData\\Local\\Temp\\MSDCSC\\runddl32.exe"	6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe

Sets file to hidden 1 TTPs 2 IoCs

Modifies file attributes to stop it showing in Explorer etc.

evasion

Hidden Files and Directories

T1564.001

pid	Process
2760	attrib.exe
1792	attrib.exe

Executes dropped EXE 1 IoCs

pid	Process
2900	runddl32.exe

Loads dropped DLL 2 IoCs

pid	Process
684	6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe
684	6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1163522206-1469769407-485553996-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\AppData\\Local\\Temp\\MSDCSC\\runddl32.exe"	6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1163522206-1469769407-485553996-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\AppData\\Local\\Temp\\MSDCSC\\runddl32.exe"	runddl32.exe

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 7 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	attrib.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	runddl32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	notepad.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	attrib.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2900	runddl32.exe

Suspicious use of AdjustPrivilegeToken 46 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	684	6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe
Token: SeSecurityPrivilege	684	6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe
Token: SeTakeOwnershipPrivilege	684	6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe
Token: SeLoadDriverPrivilege	684	6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe
Token: SeSystemProfilePrivilege	684	6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe
Token: SeSystemtimePrivilege	684	6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe
Token: SeProfSingleProcessPrivilege	684	6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe
Token: SeIncBasePriorityPrivilege	684	6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe
Token: SeCreatePagefilePrivilege	684	6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe
Token: SeBackupPrivilege	684	6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe
Token: SeRestorePrivilege	684	6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe
Token: SeShutdownPrivilege	684	6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe
Token: SeDebugPrivilege	684	6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe
Token: SeSystemEnvironmentPrivilege	684	6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe
Token: SeChangeNotifyPrivilege	684	6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe
Token: SeRemoteShutdownPrivilege	684	6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe
Token: SeUndockPrivilege	684	6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe
Token: SeManageVolumePrivilege	684	6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe
Token: SeImpersonatePrivilege	684	6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe
Token: SeCreateGlobalPrivilege	684	6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe
Token: 33	684	6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe
Token: 34	684	6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe
Token: 35	684	6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe
Token: SeIncreaseQuotaPrivilege	2900	runddl32.exe
Token: SeSecurityPrivilege	2900	runddl32.exe
Token: SeTakeOwnershipPrivilege	2900	runddl32.exe
Token: SeLoadDriverPrivilege	2900	runddl32.exe
Token: SeSystemProfilePrivilege	2900	runddl32.exe
Token: SeSystemtimePrivilege	2900	runddl32.exe
Token: SeProfSingleProcessPrivilege	2900	runddl32.exe
Token: SeIncBasePriorityPrivilege	2900	runddl32.exe
Token: SeCreatePagefilePrivilege	2900	runddl32.exe
Token: SeBackupPrivilege	2900	runddl32.exe
Token: SeRestorePrivilege	2900	runddl32.exe
Token: SeShutdownPrivilege	2900	runddl32.exe
Token: SeDebugPrivilege	2900	runddl32.exe
Token: SeSystemEnvironmentPrivilege	2900	runddl32.exe
Token: SeChangeNotifyPrivilege	2900	runddl32.exe
Token: SeRemoteShutdownPrivilege	2900	runddl32.exe
Token: SeUndockPrivilege	2900	runddl32.exe
Token: SeManageVolumePrivilege	2900	runddl32.exe
Token: SeImpersonatePrivilege	2900	runddl32.exe
Token: SeCreateGlobalPrivilege	2900	runddl32.exe
Token: 33	2900	runddl32.exe
Token: 34	2900	runddl32.exe
Token: 35	2900	runddl32.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2900	runddl32.exe

Suspicious use of WriteProcessMemory 43 IoCs

description	pid	Process	procid_target
PID 684 wrote to memory of 2416	684	6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe	30
PID 684 wrote to memory of 2416	684	6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe	30
PID 684 wrote to memory of 2416	684	6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe	30
PID 684 wrote to memory of 2416	684	6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe	30
PID 684 wrote to memory of 2184	684	6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe	31
PID 684 wrote to memory of 2184	684	6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe	31
PID 684 wrote to memory of 2184	684	6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe	31
PID 684 wrote to memory of 2184	684	6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe	31
PID 2184 wrote to memory of 1792	2184	cmd.exe	34
PID 2184 wrote to memory of 1792	2184	cmd.exe	34
PID 2184 wrote to memory of 1792	2184	cmd.exe	34
PID 2184 wrote to memory of 1792	2184	cmd.exe	34
PID 2416 wrote to memory of 2760	2416	cmd.exe	35
PID 2416 wrote to memory of 2760	2416	cmd.exe	35
PID 2416 wrote to memory of 2760	2416	cmd.exe	35
PID 2416 wrote to memory of 2760	2416	cmd.exe	35
PID 684 wrote to memory of 2900	684	6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe	36
PID 684 wrote to memory of 2900	684	6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe	36
PID 684 wrote to memory of 2900	684	6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe	36
PID 684 wrote to memory of 2900	684	6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe	36
PID 2900 wrote to memory of 1364	2900	runddl32.exe	37
PID 2900 wrote to memory of 1364	2900	runddl32.exe	37
PID 2900 wrote to memory of 1364	2900	runddl32.exe	37
PID 2900 wrote to memory of 1364	2900	runddl32.exe	37
PID 2900 wrote to memory of 1364	2900	runddl32.exe	37
PID 2900 wrote to memory of 1364	2900	runddl32.exe	37
PID 2900 wrote to memory of 1364	2900	runddl32.exe	37
PID 2900 wrote to memory of 1364	2900	runddl32.exe	37
PID 2900 wrote to memory of 1364	2900	runddl32.exe	37
PID 2900 wrote to memory of 1364	2900	runddl32.exe	37
PID 2900 wrote to memory of 1364	2900	runddl32.exe	37
PID 2900 wrote to memory of 1364	2900	runddl32.exe	37
PID 2900 wrote to memory of 1364	2900	runddl32.exe	37
PID 2900 wrote to memory of 1364	2900	runddl32.exe	37
PID 2900 wrote to memory of 1364	2900	runddl32.exe	37
PID 2900 wrote to memory of 1364	2900	runddl32.exe	37
PID 2900 wrote to memory of 1364	2900	runddl32.exe	37
PID 2900 wrote to memory of 1364	2900	runddl32.exe	37
PID 2900 wrote to memory of 1364	2900	runddl32.exe	37
PID 2900 wrote to memory of 1364	2900	runddl32.exe	37
PID 2900 wrote to memory of 1364	2900	runddl32.exe	37
PID 2900 wrote to memory of 1364	2900	runddl32.exe	37
PID 2900 wrote to memory of 1364	2900	runddl32.exe	37

Views/modifies file attributes 1 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2760	attrib.exe
1792	attrib.exe

C:\Users\Admin\AppData\Local\Temp\lab_samples\6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe
"C:\Users\Admin\AppData\Local\Temp\lab_samples\6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe"
1⤵
- Modifies WinLogon for persistence
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:684
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\lab_samples\6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe" +s +h
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2416
- - C:\Windows\SysWOW64\attrib.exe
    attrib "C:\Users\Admin\AppData\Local\Temp\lab_samples\6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe" +s +h
    3⤵
    - Sets file to hidden
    - System Location Discovery: System Language Discovery
    - Views/modifies file attributes
    PID:2760
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\lab_samples" +s +h
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2184
- - C:\Windows\SysWOW64\attrib.exe
    attrib "C:\Users\Admin\AppData\Local\Temp\lab_samples" +s +h
    3⤵
    - Sets file to hidden
    - System Location Discovery: System Language Discovery
    - Views/modifies file attributes
    PID:1792
- C:\Users\Admin\AppData\Local\Temp\MSDCSC\runddl32.exe
  "C:\Users\Admin\AppData\Local\Temp\MSDCSC\runddl32.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2900
- - C:\Windows\SysWOW64\notepad.exe
    notepad
    3⤵
    - System Location Discovery: System Language Discovery
    PID:1364

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Defense Evasion

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

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\MSDCSC\runddl32.exe

Filesize
658KB

MD5
f6351da84168d40fae8da0c156fbab0f

SHA1
1a2283c85bc5c655f5f2f77f27ec3a9412e8db7e

SHA256
6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363

SHA512
9948e83f004bb6d0edf14626660365e469dec444128e820f82066e73177f5de109d048fe226a9cbe95cfc6a99a9d4c501ab3f3900aa2e3677434f03d52694607

Download Submit
memory/684-0-0x00000000002A0000-0x00000000002A1000-memory.dmp

Filesize
4KB

Download
memory/684-52-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/1364-13-0x0000000000080000-0x0000000000081000-memory.dmp

Filesize
4KB

Download
memory/1364-51-0x00000000001E0000-0x00000000001E1000-memory.dmp

Filesize
4KB

Download
memory/2900-56-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2900-60-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2900-55-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2900-53-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2900-57-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2900-58-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2900-59-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2900-54-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2900-61-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2900-62-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2900-63-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2900-64-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2900-65-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2900-66-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads