darkcomet | 503e2beec2474407e3580ce1a2c2eb63d01305187abacf13fbf4e0a26b8a8bbd

Analysis

max time kernel
119s
max time network
117s
platform
windows10-2004_x64
resource
win10v2004-20240709-en
resource tags

arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
submitted
15/07/2024, 03:07

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General

Target
6c9fb557294dfd4b61b55f5ba93cb670N.exe
Size 592KB
Sample240715-dmc4gsvfpm
SHA256 503e2beec2474407e3580ce1a2c2eb63d01305187abacf13fbf4e0a26b8a8bbd
MD5 6c9fb557294dfd4b61b55f5ba93cb670
SHA1 6c60d6f18ee541dea9c7364d8f6e18644b20ef77
SHA512 ad785ea451fff1ad23916d8ec73d1836cecaca75fa0a93b35fa4a10af3a09a8035c6e0e3f842b70cdb46691a51462a713ad93eae515aa8634b6cb08b80591061
SSDEEP 12288:wcWRJxhIUKofd9S88itJsL6s8GwUF81yn0FI/6IC0XoSO:TW/xhIUKofSytJsL6HUP0OHC7
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

darkcomet persistence rat trojan upx

Malware Config

Signatures

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

Checks BIOS information in registry 2 TTPs 1 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	Soundcrd.exe

Checks computer location settings 2 TTPs 1 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-1-5-21-47134698-4092160662-1261813102-1000\Control Panel\International\Geo\Nation	6c9fb557294dfd4b61b55f5ba93cb670N.exe

Executes dropped EXE 3 IoCs

pid	Process
1872	Soundcrd.exe
1960	Soundcrd.exe
1792	Soundcrd.exe

UPX packed file 23 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3584-0-0x0000000000400000-0x00000000007EB000-memory.dmp	upx
behavioral2/files/0x000900000002350a-16.dat	upx
behavioral2/memory/1872-30-0x0000000000400000-0x00000000007EB000-memory.dmp	upx
behavioral2/memory/3584-29-0x0000000000400000-0x00000000007EB000-memory.dmp	upx
behavioral2/memory/1960-33-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/1960-36-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/1960-37-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/1960-39-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/1960-41-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/1960-40-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/1960-38-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/1960-42-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/1792-46-0x0000000000400000-0x0000000000409000-memory.dmp	upx
behavioral2/memory/1792-48-0x0000000000400000-0x0000000000409000-memory.dmp	upx
behavioral2/memory/1792-43-0x0000000000400000-0x0000000000409000-memory.dmp	upx
behavioral2/memory/1872-52-0x0000000000400000-0x00000000007EB000-memory.dmp	upx
behavioral2/memory/1960-53-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/1792-54-0x0000000000400000-0x0000000000409000-memory.dmp	upx
behavioral2/memory/1960-57-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/1960-61-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/1960-65-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/1960-69-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/1960-73-0x0000000000400000-0x00000000004B5000-memory.dmp	upx

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-1-5-21-47134698-4092160662-1261813102-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Mcrosoftt = "C:\\Users\\Admin\\AppData\\Roaming\\Soundcrd.exe"	reg.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1872 set thread context of 1960	1872	Soundcrd.exe	91
PID 1872 set thread context of 1792	1872	Soundcrd.exe	92

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

System Information Discovery
T1082

Checks processor information in registry 2 TTPs 4 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	Soundcrd.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	Soundcrd.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	Soundcrd.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	Soundcrd.exe

Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	Soundcrd.exe

Suspicious use of AdjustPrivilegeToken 25 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	1960	Soundcrd.exe
Token: SeSecurityPrivilege	1960	Soundcrd.exe
Token: SeTakeOwnershipPrivilege	1960	Soundcrd.exe
Token: SeLoadDriverPrivilege	1960	Soundcrd.exe
Token: SeSystemProfilePrivilege	1960	Soundcrd.exe
Token: SeSystemtimePrivilege	1960	Soundcrd.exe
Token: SeProfSingleProcessPrivilege	1960	Soundcrd.exe
Token: SeIncBasePriorityPrivilege	1960	Soundcrd.exe
Token: SeCreatePagefilePrivilege	1960	Soundcrd.exe
Token: SeBackupPrivilege	1960	Soundcrd.exe
Token: SeRestorePrivilege	1960	Soundcrd.exe
Token: SeShutdownPrivilege	1960	Soundcrd.exe
Token: SeDebugPrivilege	1960	Soundcrd.exe
Token: SeSystemEnvironmentPrivilege	1960	Soundcrd.exe
Token: SeChangeNotifyPrivilege	1960	Soundcrd.exe
Token: SeRemoteShutdownPrivilege	1960	Soundcrd.exe
Token: SeUndockPrivilege	1960	Soundcrd.exe
Token: SeManageVolumePrivilege	1960	Soundcrd.exe
Token: SeImpersonatePrivilege	1960	Soundcrd.exe
Token: SeCreateGlobalPrivilege	1960	Soundcrd.exe
Token: 33	1960	Soundcrd.exe
Token: 34	1960	Soundcrd.exe
Token: 35	1960	Soundcrd.exe
Token: 36	1960	Soundcrd.exe
Token: SeDebugPrivilege	1792	Soundcrd.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
3584	6c9fb557294dfd4b61b55f5ba93cb670N.exe
1872	Soundcrd.exe
1792	Soundcrd.exe

Suspicious use of WriteProcessMemory 25 IoCs

description	pid	Process	procid_target
PID 3584 wrote to memory of 2632	3584	6c9fb557294dfd4b61b55f5ba93cb670N.exe	86
PID 3584 wrote to memory of 2632	3584	6c9fb557294dfd4b61b55f5ba93cb670N.exe	86
PID 3584 wrote to memory of 2632	3584	6c9fb557294dfd4b61b55f5ba93cb670N.exe	86
PID 2632 wrote to memory of 4560	2632	cmd.exe	89
PID 2632 wrote to memory of 4560	2632	cmd.exe	89
PID 2632 wrote to memory of 4560	2632	cmd.exe	89
PID 3584 wrote to memory of 1872	3584	6c9fb557294dfd4b61b55f5ba93cb670N.exe	90
PID 3584 wrote to memory of 1872	3584	6c9fb557294dfd4b61b55f5ba93cb670N.exe	90
PID 3584 wrote to memory of 1872	3584	6c9fb557294dfd4b61b55f5ba93cb670N.exe	90
PID 1872 wrote to memory of 1960	1872	Soundcrd.exe	91
PID 1872 wrote to memory of 1960	1872	Soundcrd.exe	91
PID 1872 wrote to memory of 1960	1872	Soundcrd.exe	91
PID 1872 wrote to memory of 1960	1872	Soundcrd.exe	91
PID 1872 wrote to memory of 1960	1872	Soundcrd.exe	91
PID 1872 wrote to memory of 1960	1872	Soundcrd.exe	91
PID 1872 wrote to memory of 1960	1872	Soundcrd.exe	91
PID 1872 wrote to memory of 1960	1872	Soundcrd.exe	91
PID 1872 wrote to memory of 1792	1872	Soundcrd.exe	92
PID 1872 wrote to memory of 1792	1872	Soundcrd.exe	92
PID 1872 wrote to memory of 1792	1872	Soundcrd.exe	92
PID 1872 wrote to memory of 1792	1872	Soundcrd.exe	92
PID 1872 wrote to memory of 1792	1872	Soundcrd.exe	92
PID 1872 wrote to memory of 1792	1872	Soundcrd.exe	92
PID 1872 wrote to memory of 1792	1872	Soundcrd.exe	92
PID 1872 wrote to memory of 1792	1872	Soundcrd.exe	92

C:\Users\Admin\AppData\Local\Temp\6c9fb557294dfd4b61b55f5ba93cb670N.exe
"C:\Users\Admin\AppData\Local\Temp\6c9fb557294dfd4b61b55f5ba93cb670N.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3584
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\MXGBu.bat" "
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2632
- - C:\Windows\SysWOW64\reg.exe
    REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /v "Mcrosoftt" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\Soundcrd.exe" /f
    3⤵
    - Adds Run key to start application
    PID:4560
- C:\Users\Admin\AppData\Roaming\Soundcrd.exe
  "C:\Users\Admin\AppData\Roaming\Soundcrd.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1872
- - C:\Users\Admin\AppData\Roaming\Soundcrd.exe
    C:\Users\Admin\AppData\Roaming\Soundcrd.exe
    3⤵
    - Checks BIOS information in registry
    - Executes dropped EXE
    - Checks processor information in registry
    - Enumerates system info in registry
    - Suspicious use of AdjustPrivilegeToken
    PID:1960
- - C:\Users\Admin\AppData\Roaming\Soundcrd.exe
    C:\Users\Admin\AppData\Roaming\Soundcrd.exe
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:1792

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

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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MXGBu.txt

Path C:\Users\Admin\AppData\Local\Temp\MXGBu.txt
Size 139B
SHA256 10ea37eceabbe80fe9814280b66b957636951dbeeed18a9b4d50a1d24a6f1d1d
MD5 173bcce4810d4901872d0ef4f0bfea4e
SHA1 561b03fdfe68b6419fddf57f32e1aab9a6126a2f
SHA512 2401e0a5e3f7bf590a0767449da2249d09717e8c1cb71a7475e81d9615580001cfc38705cd1a5b4edc33f7df043bf195e28e4a5442a32bc879dffc6473bd545e
MD5 SHA1 SHA512

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Soundcrd.txt

Path C:\Users\Admin\AppData\Roaming\Soundcrd.txt
Size 592KB
SHA256 b2d0017779b370249260a762d6c706280126a1f37e4436fa35bde4fe522f4dbd
MD5 9ef1ae2e6f326c44fe5e88da580a74d4
SHA1 a57a6dcf8b6d333de4eb7cd87afd2bf0718f5571
SHA512 6e3e520e053756757aaf49d95fae47963f2dbfbce63632a2163f972b8b2e5b82ea453480b30a4cc50615fc5071db2f74e7ba55ba60c497da94014558643bba69
SSDEEP 12288:wcWRJxhIUKofd9S88itJsL6s8GwUF81yn0FI/6IC0XoSr:TW/xhIUKofSytJsL6HUP0OHCo
MD5 SHA1 SHA512 SSDEEP

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memory/1792-46-0x0000000000400000-0x0000000000409000-memory.dmp

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memory/1792-54-0x0000000000400000-0x0000000000409000-memory.dmp

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memory/1792-43-0x0000000000400000-0x0000000000409000-memory.dmp

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memory/1792-48-0x0000000000400000-0x0000000000409000-memory.dmp

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memory/1872-30-0x0000000000400000-0x00000000007EB000-memory.dmp

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memory/1872-52-0x0000000000400000-0x00000000007EB000-memory.dmp

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memory/1960-36-0x0000000000400000-0x00000000004B5000-memory.dmp

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memory/1960-41-0x0000000000400000-0x00000000004B5000-memory.dmp

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memory/1960-40-0x0000000000400000-0x00000000004B5000-memory.dmp

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memory/1960-38-0x0000000000400000-0x00000000004B5000-memory.dmp

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memory/1960-42-0x0000000000400000-0x00000000004B5000-memory.dmp

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memory/1960-39-0x0000000000400000-0x00000000004B5000-memory.dmp

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memory/1960-37-0x0000000000400000-0x00000000004B5000-memory.dmp

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memory/1960-69-0x0000000000400000-0x00000000004B5000-memory.dmp

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memory/1960-33-0x0000000000400000-0x00000000004B5000-memory.dmp

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memory/1960-53-0x0000000000400000-0x00000000004B5000-memory.dmp

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memory/1960-73-0x0000000000400000-0x00000000004B5000-memory.dmp

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memory/1960-57-0x0000000000400000-0x00000000004B5000-memory.dmp

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memory/1960-61-0x0000000000400000-0x00000000004B5000-memory.dmp

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memory/1960-65-0x0000000000400000-0x00000000004B5000-memory.dmp

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memory/3584-0-0x0000000000400000-0x00000000007EB000-memory.dmp

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memory/3584-29-0x0000000000400000-0x00000000007EB000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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