darkcomet | 27b67644170b08d57dcd8bb39d9b779632aad6697845015175e51e4801a42a5a

Analysis

max time kernel
151s
max time network
131s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
06-03-2024 06:16

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

b6b6a5213f8b3e7ce5306cd069dcbf5e.exe
Size

800KB
MD5

b6b6a5213f8b3e7ce5306cd069dcbf5e
SHA1

9991f4da8630039b84f4bf8c1b45fec898fa80b7
SHA256

27b67644170b08d57dcd8bb39d9b779632aad6697845015175e51e4801a42a5a
SHA512

bb0deacba3eeca40fe69990c30a9a3cee3d82052d895a50e7c92b461ca19ecf6c1109209763b6df4ea2fe9c3565c672fe63c7a11dfd9692ba71fae223eafb6ea
SSDEEP

12288:+f9tz7HqHG/niI+dExFzfPrwbg1llIfUls:+f7z7HqKsE+2lIff

Score

10^/10

darkcomet guest16 persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

speeed.hopto.org:147

Mutex

DC_MUTEX-HGY40HP

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
cNTlixxZgYma
install
true
offline_keylogger
true
persistence
false
reg_key
MicroUpdate

Signatures

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

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

Processes:

b6b6a5213f8b3e7ce5306cd069dcbf5e.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	b6b6a5213f8b3e7ce5306cd069dcbf5e.exe

Executes dropped EXE 1 IoCs

Processes:

msdcsc.exe

pid process

2616 msdcsc.exe
Loads dropped DLL 2 IoCs

Processes:

b6b6a5213f8b3e7ce5306cd069dcbf5e.exe

pid process

2092 b6b6a5213f8b3e7ce5306cd069dcbf5e.exe
2092 b6b6a5213f8b3e7ce5306cd069dcbf5e.exe

pid	process
2616	msdcsc.exe

pid	process
2092	b6b6a5213f8b3e7ce5306cd069dcbf5e.exe
2092	b6b6a5213f8b3e7ce5306cd069dcbf5e.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

b6b6a5213f8b3e7ce5306cd069dcbf5e.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1658372521-4246568289-2509113762-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	b6b6a5213f8b3e7ce5306cd069dcbf5e.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 46 IoCs

Processes:

b6b6a5213f8b3e7ce5306cd069dcbf5e.exemsdcsc.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	2092	b6b6a5213f8b3e7ce5306cd069dcbf5e.exe
Token: SeSecurityPrivilege	2092	b6b6a5213f8b3e7ce5306cd069dcbf5e.exe
Token: SeTakeOwnershipPrivilege	2092	b6b6a5213f8b3e7ce5306cd069dcbf5e.exe
Token: SeLoadDriverPrivilege	2092	b6b6a5213f8b3e7ce5306cd069dcbf5e.exe
Token: SeSystemProfilePrivilege	2092	b6b6a5213f8b3e7ce5306cd069dcbf5e.exe
Token: SeSystemtimePrivilege	2092	b6b6a5213f8b3e7ce5306cd069dcbf5e.exe
Token: SeProfSingleProcessPrivilege	2092	b6b6a5213f8b3e7ce5306cd069dcbf5e.exe
Token: SeIncBasePriorityPrivilege	2092	b6b6a5213f8b3e7ce5306cd069dcbf5e.exe
Token: SeCreatePagefilePrivilege	2092	b6b6a5213f8b3e7ce5306cd069dcbf5e.exe
Token: SeBackupPrivilege	2092	b6b6a5213f8b3e7ce5306cd069dcbf5e.exe
Token: SeRestorePrivilege	2092	b6b6a5213f8b3e7ce5306cd069dcbf5e.exe
Token: SeShutdownPrivilege	2092	b6b6a5213f8b3e7ce5306cd069dcbf5e.exe
Token: SeDebugPrivilege	2092	b6b6a5213f8b3e7ce5306cd069dcbf5e.exe
Token: SeSystemEnvironmentPrivilege	2092	b6b6a5213f8b3e7ce5306cd069dcbf5e.exe
Token: SeChangeNotifyPrivilege	2092	b6b6a5213f8b3e7ce5306cd069dcbf5e.exe
Token: SeRemoteShutdownPrivilege	2092	b6b6a5213f8b3e7ce5306cd069dcbf5e.exe
Token: SeUndockPrivilege	2092	b6b6a5213f8b3e7ce5306cd069dcbf5e.exe
Token: SeManageVolumePrivilege	2092	b6b6a5213f8b3e7ce5306cd069dcbf5e.exe
Token: SeImpersonatePrivilege	2092	b6b6a5213f8b3e7ce5306cd069dcbf5e.exe
Token: SeCreateGlobalPrivilege	2092	b6b6a5213f8b3e7ce5306cd069dcbf5e.exe
Token: 33	2092	b6b6a5213f8b3e7ce5306cd069dcbf5e.exe
Token: 34	2092	b6b6a5213f8b3e7ce5306cd069dcbf5e.exe
Token: 35	2092	b6b6a5213f8b3e7ce5306cd069dcbf5e.exe
Token: SeIncreaseQuotaPrivilege	2616	msdcsc.exe
Token: SeSecurityPrivilege	2616	msdcsc.exe
Token: SeTakeOwnershipPrivilege	2616	msdcsc.exe
Token: SeLoadDriverPrivilege	2616	msdcsc.exe
Token: SeSystemProfilePrivilege	2616	msdcsc.exe
Token: SeSystemtimePrivilege	2616	msdcsc.exe
Token: SeProfSingleProcessPrivilege	2616	msdcsc.exe
Token: SeIncBasePriorityPrivilege	2616	msdcsc.exe
Token: SeCreatePagefilePrivilege	2616	msdcsc.exe
Token: SeBackupPrivilege	2616	msdcsc.exe
Token: SeRestorePrivilege	2616	msdcsc.exe
Token: SeShutdownPrivilege	2616	msdcsc.exe
Token: SeDebugPrivilege	2616	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	2616	msdcsc.exe
Token: SeChangeNotifyPrivilege	2616	msdcsc.exe
Token: SeRemoteShutdownPrivilege	2616	msdcsc.exe
Token: SeUndockPrivilege	2616	msdcsc.exe
Token: SeManageVolumePrivilege	2616	msdcsc.exe
Token: SeImpersonatePrivilege	2616	msdcsc.exe
Token: SeCreateGlobalPrivilege	2616	msdcsc.exe
Token: 33	2616	msdcsc.exe
Token: 34	2616	msdcsc.exe
Token: 35	2616	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

msdcsc.exe

pid process

2616 msdcsc.exe

pid	process
2616	msdcsc.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

b6b6a5213f8b3e7ce5306cd069dcbf5e.exemsdcsc.exe

description	pid	process	target process
PID 2092 wrote to memory of 2616	2092	b6b6a5213f8b3e7ce5306cd069dcbf5e.exe	msdcsc.exe
PID 2092 wrote to memory of 2616	2092	b6b6a5213f8b3e7ce5306cd069dcbf5e.exe	msdcsc.exe
PID 2092 wrote to memory of 2616	2092	b6b6a5213f8b3e7ce5306cd069dcbf5e.exe	msdcsc.exe
PID 2092 wrote to memory of 2616	2092	b6b6a5213f8b3e7ce5306cd069dcbf5e.exe	msdcsc.exe
PID 2616 wrote to memory of 2188	2616	msdcsc.exe	iexplore.exe
PID 2616 wrote to memory of 2188	2616	msdcsc.exe	iexplore.exe
PID 2616 wrote to memory of 2188	2616	msdcsc.exe	iexplore.exe
PID 2616 wrote to memory of 2188	2616	msdcsc.exe	iexplore.exe
PID 2616 wrote to memory of 2952	2616	msdcsc.exe	explorer.exe
PID 2616 wrote to memory of 2952	2616	msdcsc.exe	explorer.exe
PID 2616 wrote to memory of 2952	2616	msdcsc.exe	explorer.exe
PID 2616 wrote to memory of 2952	2616	msdcsc.exe	explorer.exe

C:\Users\Admin\AppData\Local\Temp\b6b6a5213f8b3e7ce5306cd069dcbf5e.exe
"C:\Users\Admin\AppData\Local\Temp\b6b6a5213f8b3e7ce5306cd069dcbf5e.exe"
1⤵
- Modifies WinLogon for persistence
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2092
- C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
  "C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2616
- - C:\Program Files (x86)\Internet Explorer\iexplore.exe
    "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
    3⤵
    PID:2188
- - C:\Windows\explorer.exe
    "C:\Windows\explorer.exe"
    3⤵
    PID:2952

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

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\Documents\MSDCSC\msdcsc.exe

Filesize
800KB

MD5
b6b6a5213f8b3e7ce5306cd069dcbf5e

SHA1
9991f4da8630039b84f4bf8c1b45fec898fa80b7

SHA256
27b67644170b08d57dcd8bb39d9b779632aad6697845015175e51e4801a42a5a

SHA512
bb0deacba3eeca40fe69990c30a9a3cee3d82052d895a50e7c92b461ca19ecf6c1109209763b6df4ea2fe9c3565c672fe63c7a11dfd9692ba71fae223eafb6ea

Download Submit
memory/2092-7-0x0000000076E50000-0x0000000076F60000-memory.dmp

Filesize
1.1MB

Download
memory/2092-8-0x0000000001F90000-0x0000000001FA0000-memory.dmp

Filesize
64KB

Download
memory/2092-0-0x0000000000400000-0x00000000004D1000-memory.dmp

Filesize
836KB

Download
memory/2092-4-0x00000000775A0000-0x00000000775A1000-memory.dmp

Filesize
4KB

Download
memory/2092-9-0x00000000775A1000-0x00000000775A2000-memory.dmp

Filesize
4KB

Download
memory/2092-6-0x0000000002000000-0x0000000002010000-memory.dmp

Filesize
64KB

Download
memory/2092-1-0x0000000000220000-0x0000000000224000-memory.dmp

Filesize
16KB

Download
memory/2092-3-0x0000000000290000-0x00000000002C9000-memory.dmp

Filesize
228KB

Download
memory/2092-5-0x000000007759F000-0x00000000775A0000-memory.dmp

Filesize
4KB

Download
memory/2092-10-0x00000000775D8000-0x00000000775D9000-memory.dmp

Filesize
4KB

Download
memory/2092-11-0x0000000000400000-0x00000000004D1000-memory.dmp

Filesize
836KB

Download
memory/2092-12-0x00000000003E0000-0x00000000003E1000-memory.dmp

Filesize
4KB

Download
memory/2092-2-0x0000000000400000-0x00000000004D1000-memory.dmp

Filesize
836KB

Download
memory/2092-37-0x0000000000290000-0x00000000002C9000-memory.dmp

Filesize
228KB

Download
memory/2092-36-0x0000000076E50000-0x0000000076F60000-memory.dmp

Filesize
1.1MB

Download
memory/2092-35-0x0000000000400000-0x00000000004D1000-memory.dmp

Filesize
836KB

Download
memory/2616-33-0x00000000775A1000-0x00000000775A2000-memory.dmp

Filesize
4KB

Download
memory/2616-43-0x00000000005F0000-0x0000000000600000-memory.dmp

Filesize
64KB

Download
memory/2616-29-0x000000007759F000-0x00000000775A0000-memory.dmp

Filesize
4KB

Download
memory/2616-31-0x00000000775D8000-0x00000000775D9000-memory.dmp

Filesize
4KB

Download
memory/2616-32-0x0000000000400000-0x00000000004D1000-memory.dmp

Filesize
836KB

Download
memory/2616-28-0x00000000775A0000-0x00000000775A1000-memory.dmp

Filesize
4KB

Download
memory/2616-34-0x0000000000380000-0x0000000000381000-memory.dmp

Filesize
4KB

Download
memory/2616-27-0x00000000003D0000-0x00000000003E0000-memory.dmp

Filesize
64KB

Download
memory/2616-26-0x00000000005F0000-0x0000000000600000-memory.dmp

Filesize
64KB

Download
memory/2616-25-0x0000000000260000-0x0000000000299000-memory.dmp

Filesize
228KB

Download
memory/2616-38-0x0000000000400000-0x00000000004D1000-memory.dmp

Filesize
836KB

Download
memory/2616-39-0x0000000000260000-0x0000000000299000-memory.dmp

Filesize
228KB

Download
memory/2616-40-0x00000000003D0000-0x00000000003E0000-memory.dmp

Filesize
64KB

Download
memory/2616-41-0x0000000000400000-0x00000000004D1000-memory.dmp

Filesize
836KB

Download
memory/2616-42-0x0000000000400000-0x00000000004D1000-memory.dmp

Filesize
836KB

Download
memory/2616-30-0x0000000076E50000-0x0000000076F60000-memory.dmp

Filesize
1.1MB

Download
memory/2616-44-0x00000000002D0000-0x00000000002E0000-memory.dmp

Filesize
64KB

Download
memory/2616-45-0x0000000000400000-0x00000000004D1000-memory.dmp

Filesize
836KB

Download
memory/2616-46-0x0000000000400000-0x00000000004D1000-memory.dmp

Filesize
836KB

Download
memory/2616-47-0x0000000000400000-0x00000000004D1000-memory.dmp

Filesize
836KB

Download
memory/2616-48-0x0000000000400000-0x00000000004D1000-memory.dmp

Filesize
836KB

Download
memory/2616-49-0x0000000000400000-0x00000000004D1000-memory.dmp

Filesize
836KB

Download
memory/2616-50-0x0000000000400000-0x00000000004D1000-memory.dmp

Filesize
836KB

Download
memory/2616-51-0x0000000000400000-0x00000000004D1000-memory.dmp

Filesize
836KB

Download
memory/2616-52-0x0000000000400000-0x00000000004D1000-memory.dmp

Filesize
836KB

Download
memory/2616-53-0x0000000000400000-0x00000000004D1000-memory.dmp

Filesize
836KB

Download
memory/2616-54-0x0000000000400000-0x00000000004D1000-memory.dmp

Filesize
836KB

Download
memory/2616-55-0x0000000000400000-0x00000000004D1000-memory.dmp

Filesize
836KB

Download
memory/2616-56-0x0000000000400000-0x00000000004D1000-memory.dmp

Filesize
836KB

Download