darkcomet | 553b073e141c065f89e2247511c1e8fbabb624c71e07ff1e38b14197c336c69a

Analysis

max time kernel
118s
max time network
118s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
05-10-2024 17:26

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

553b073e141c065f89e2247511c1e8fbabb624c71e07ff1e38b14197c336c69aN.exe
Size

1.3MB
MD5

00004abf734a7d34d6665e1daea238c0
SHA1

07efc6830c9128c25c88cf6401af2b01442274f2
SHA256

553b073e141c065f89e2247511c1e8fbabb624c71e07ff1e38b14197c336c69a
SHA512

d5e8f252fe45d6276cbaee48fbd73e38d9c093f77fbd7d9f392556a619e5865f6e3df9d78c89f7ed49971fd2e9aca88a6f7ab7324300a9c9c0c47043ffe5aeb7
SSDEEP

24576:k4lavt0LkLL9IMixoEgeany0Bex3XgoOvOr8FozBi2eoTq9MmCS:zkwkn9IMHeany063Xgxv+ZzBOqaPCS

Score

10^/10

darkcomet guest16 discovery persistence rat trojan upx

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

10.10.0.100:1604

Mutex

DC_MUTEX-F54S21D

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
jXmwh2j5mvF3
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

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\\msdcsc.exe"	1622.exe

Checks computer location settings 2 TTPs 2 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1194130065-3471212556-1656947724-1000\Control Panel\International\Geo\Nation	553b073e141c065f89e2247511c1e8fbabb624c71e07ff1e38b14197c336c69aN.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1194130065-3471212556-1656947724-1000\Control Panel\International\Geo\Nation	1622.exe

Executes dropped EXE 2 IoCs

pid	Process
1580	1622.exe
2232	msdcsc.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-1-5-21-1194130065-3471212556-1656947724-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\AppData\\Local\\Temp\\MSDCSC\\msdcsc.exe"	1622.exe

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000700000002346f-11.dat	upx
behavioral2/memory/1580-19-0x0000000000400000-0x00000000004EA000-memory.dmp	upx
behavioral2/memory/1580-34-0x0000000000400000-0x00000000004EA000-memory.dmp	upx
behavioral2/memory/2232-35-0x0000000000400000-0x00000000004EA000-memory.dmp	upx
behavioral2/memory/2232-36-0x0000000000400000-0x00000000004EA000-memory.dmp	upx
behavioral2/memory/2232-38-0x0000000000400000-0x00000000004EA000-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 3 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	553b073e141c065f89e2247511c1e8fbabb624c71e07ff1e38b14197c336c69aN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	1622.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	msdcsc.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	1580	1622.exe
Token: SeSecurityPrivilege	1580	1622.exe
Token: SeTakeOwnershipPrivilege	1580	1622.exe
Token: SeLoadDriverPrivilege	1580	1622.exe
Token: SeSystemProfilePrivilege	1580	1622.exe
Token: SeSystemtimePrivilege	1580	1622.exe
Token: SeProfSingleProcessPrivilege	1580	1622.exe
Token: SeIncBasePriorityPrivilege	1580	1622.exe
Token: SeCreatePagefilePrivilege	1580	1622.exe
Token: SeBackupPrivilege	1580	1622.exe
Token: SeRestorePrivilege	1580	1622.exe
Token: SeShutdownPrivilege	1580	1622.exe
Token: SeDebugPrivilege	1580	1622.exe
Token: SeSystemEnvironmentPrivilege	1580	1622.exe
Token: SeChangeNotifyPrivilege	1580	1622.exe
Token: SeRemoteShutdownPrivilege	1580	1622.exe
Token: SeUndockPrivilege	1580	1622.exe
Token: SeManageVolumePrivilege	1580	1622.exe
Token: SeImpersonatePrivilege	1580	1622.exe
Token: SeCreateGlobalPrivilege	1580	1622.exe
Token: 33	1580	1622.exe
Token: 34	1580	1622.exe
Token: 35	1580	1622.exe
Token: 36	1580	1622.exe
Token: SeIncreaseQuotaPrivilege	2232	msdcsc.exe
Token: SeSecurityPrivilege	2232	msdcsc.exe
Token: SeTakeOwnershipPrivilege	2232	msdcsc.exe
Token: SeLoadDriverPrivilege	2232	msdcsc.exe
Token: SeSystemProfilePrivilege	2232	msdcsc.exe
Token: SeSystemtimePrivilege	2232	msdcsc.exe
Token: SeProfSingleProcessPrivilege	2232	msdcsc.exe
Token: SeIncBasePriorityPrivilege	2232	msdcsc.exe
Token: SeCreatePagefilePrivilege	2232	msdcsc.exe
Token: SeBackupPrivilege	2232	msdcsc.exe
Token: SeRestorePrivilege	2232	msdcsc.exe
Token: SeShutdownPrivilege	2232	msdcsc.exe
Token: SeDebugPrivilege	2232	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	2232	msdcsc.exe
Token: SeChangeNotifyPrivilege	2232	msdcsc.exe
Token: SeRemoteShutdownPrivilege	2232	msdcsc.exe
Token: SeUndockPrivilege	2232	msdcsc.exe
Token: SeManageVolumePrivilege	2232	msdcsc.exe
Token: SeImpersonatePrivilege	2232	msdcsc.exe
Token: SeCreateGlobalPrivilege	2232	msdcsc.exe
Token: 33	2232	msdcsc.exe
Token: 34	2232	msdcsc.exe
Token: 35	2232	msdcsc.exe
Token: 36	2232	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2232	msdcsc.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3436 wrote to memory of 1580	3436	553b073e141c065f89e2247511c1e8fbabb624c71e07ff1e38b14197c336c69aN.exe	82
PID 3436 wrote to memory of 1580	3436	553b073e141c065f89e2247511c1e8fbabb624c71e07ff1e38b14197c336c69aN.exe	82
PID 3436 wrote to memory of 1580	3436	553b073e141c065f89e2247511c1e8fbabb624c71e07ff1e38b14197c336c69aN.exe	82
PID 1580 wrote to memory of 2232	1580	1622.exe	84
PID 1580 wrote to memory of 2232	1580	1622.exe	84
PID 1580 wrote to memory of 2232	1580	1622.exe	84

C:\Users\Admin\AppData\Local\Temp\553b073e141c065f89e2247511c1e8fbabb624c71e07ff1e38b14197c336c69aN.exe
"C:\Users\Admin\AppData\Local\Temp\553b073e141c065f89e2247511c1e8fbabb624c71e07ff1e38b14197c336c69aN.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3436
- C:\Users\Admin\AppData\Local\Temp\1622\1622.exe
  "C:\Users\Admin\AppData\Local\Temp\1622\1622.exe"
  2⤵
  - Modifies WinLogon for persistence
  - Checks computer location settings
  - Executes dropped EXE
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1580
- - C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
    "C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:2232

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

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\1622\1622.exe

Filesize
350KB

MD5
2131236ee48e6cdbfeca736d00e30d3e

SHA1
3713c5e2ace20d8bd701df432787593805ffdd8b

SHA256
a327f9ba814ea744cc411f09cb13df1caf1b1ec16faad90dfd16b7437d86700b

SHA512
30cbc3ae757774d7de34b291f5a8213e95b6310b8c046dd07ee9ebf49f11dd19ee1866939a94a9b0f6ca9b926b7c2c1f4728907ed7624d6f3e8dc89f999e58f5

Download Submit
memory/1580-19-0x0000000000400000-0x00000000004EA000-memory.dmp

Filesize
936KB

Download
memory/1580-20-0x00000000021B0000-0x00000000021B1000-memory.dmp

Filesize
4KB

Download
memory/1580-34-0x0000000000400000-0x00000000004EA000-memory.dmp

Filesize
936KB

Download
memory/2232-35-0x0000000000400000-0x00000000004EA000-memory.dmp

Filesize
936KB

Download
memory/2232-36-0x0000000000400000-0x00000000004EA000-memory.dmp

Filesize
936KB

Download
memory/2232-38-0x0000000000400000-0x00000000004EA000-memory.dmp

Filesize
936KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads