darkcomet | a8bdc5b8e43bc79ebf3c52ab929f67ebf6ce624ebed2cadb03698ecefbf11ef3

Analysis

max time kernel
141s
max time network
140s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
11/10/2024, 05:31

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General

Target

a8bdc5b8e43bc79ebf3c52ab929f67ebf6ce624ebed2cadb03698ecefbf11ef3N.exe
Size

574KB
MD5

89a320bf53683887e09ec491b2f1a1a0
SHA1

be8090ed699843b9ed02ca3c186074d3ef40f950
SHA256

a8bdc5b8e43bc79ebf3c52ab929f67ebf6ce624ebed2cadb03698ecefbf11ef3
SHA512

78d84be0d184fe2c0998d63f1936588082520c0952f0bbf357302eb0e917c636a5011690d1eaabf5d43882ed516e079ed91d1493b4ecc665c844dd3cf671458e
SSDEEP

12288:zCyEHAWAdljmJqkC3xMX85FSR2f9A08NIX+Vjwd4G/3z1ET4m3Hdsube:zFhWAfn22m0eD1GPz8Hdxq

Score

10^/10

darkcomet discovery 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

Executes dropped EXE 3 IoCs

pid	Process
2376	Soundcrd.exe
2916	Soundcrd.exe
2920	Soundcrd.exe

Loads dropped DLL 7 IoCs

pid	Process
1728	a8bdc5b8e43bc79ebf3c52ab929f67ebf6ce624ebed2cadb03698ecefbf11ef3N.exe
1728	a8bdc5b8e43bc79ebf3c52ab929f67ebf6ce624ebed2cadb03698ecefbf11ef3N.exe
1728	a8bdc5b8e43bc79ebf3c52ab929f67ebf6ce624ebed2cadb03698ecefbf11ef3N.exe
1728	a8bdc5b8e43bc79ebf3c52ab929f67ebf6ce624ebed2cadb03698ecefbf11ef3N.exe
1728	a8bdc5b8e43bc79ebf3c52ab929f67ebf6ce624ebed2cadb03698ecefbf11ef3N.exe
2376	Soundcrd.exe
2376	Soundcrd.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-1-5-21-4177215427-74451935-3209572229-1000\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 2376 set thread context of 2916	2376	Soundcrd.exe	35
PID 2376 set thread context of 2920	2376	Soundcrd.exe	36

UPX packed file 21 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2916-55-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2916-53-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2916-57-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2916-60-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2916-61-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2916-62-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2916-59-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2916-64-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2916-63-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2920-65-0x0000000000400000-0x0000000000409000-memory.dmp	upx
behavioral1/memory/2920-70-0x0000000000400000-0x0000000000409000-memory.dmp	upx
behavioral1/memory/2920-69-0x0000000000400000-0x0000000000409000-memory.dmp	upx
behavioral1/memory/2920-68-0x0000000000400000-0x0000000000409000-memory.dmp	upx
behavioral1/memory/2916-74-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2920-77-0x0000000000400000-0x0000000000409000-memory.dmp	upx
behavioral1/memory/2916-80-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2916-84-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2916-88-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2916-92-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2916-96-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2916-100-0x0000000000400000-0x00000000004B5000-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 6 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	a8bdc5b8e43bc79ebf3c52ab929f67ebf6ce624ebed2cadb03698ecefbf11ef3N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Soundcrd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Soundcrd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Soundcrd.exe

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 24 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	2916	Soundcrd.exe
Token: SeSecurityPrivilege	2916	Soundcrd.exe
Token: SeTakeOwnershipPrivilege	2916	Soundcrd.exe
Token: SeLoadDriverPrivilege	2916	Soundcrd.exe
Token: SeSystemProfilePrivilege	2916	Soundcrd.exe
Token: SeSystemtimePrivilege	2916	Soundcrd.exe
Token: SeProfSingleProcessPrivilege	2916	Soundcrd.exe
Token: SeIncBasePriorityPrivilege	2916	Soundcrd.exe
Token: SeCreatePagefilePrivilege	2916	Soundcrd.exe
Token: SeBackupPrivilege	2916	Soundcrd.exe
Token: SeRestorePrivilege	2916	Soundcrd.exe
Token: SeShutdownPrivilege	2916	Soundcrd.exe
Token: SeDebugPrivilege	2916	Soundcrd.exe
Token: SeSystemEnvironmentPrivilege	2916	Soundcrd.exe
Token: SeChangeNotifyPrivilege	2916	Soundcrd.exe
Token: SeRemoteShutdownPrivilege	2916	Soundcrd.exe
Token: SeUndockPrivilege	2916	Soundcrd.exe
Token: SeManageVolumePrivilege	2916	Soundcrd.exe
Token: SeImpersonatePrivilege	2916	Soundcrd.exe
Token: SeCreateGlobalPrivilege	2916	Soundcrd.exe
Token: 33	2916	Soundcrd.exe
Token: 34	2916	Soundcrd.exe
Token: 35	2916	Soundcrd.exe
Token: SeDebugPrivilege	2920	Soundcrd.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
1728	a8bdc5b8e43bc79ebf3c52ab929f67ebf6ce624ebed2cadb03698ecefbf11ef3N.exe
2376	Soundcrd.exe
2920	Soundcrd.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1728 wrote to memory of 1484	1728	a8bdc5b8e43bc79ebf3c52ab929f67ebf6ce624ebed2cadb03698ecefbf11ef3N.exe	31
PID 1728 wrote to memory of 1484	1728	a8bdc5b8e43bc79ebf3c52ab929f67ebf6ce624ebed2cadb03698ecefbf11ef3N.exe	31
PID 1728 wrote to memory of 1484	1728	a8bdc5b8e43bc79ebf3c52ab929f67ebf6ce624ebed2cadb03698ecefbf11ef3N.exe	31
PID 1728 wrote to memory of 1484	1728	a8bdc5b8e43bc79ebf3c52ab929f67ebf6ce624ebed2cadb03698ecefbf11ef3N.exe	31
PID 1484 wrote to memory of 2212	1484	cmd.exe	33
PID 1484 wrote to memory of 2212	1484	cmd.exe	33
PID 1484 wrote to memory of 2212	1484	cmd.exe	33
PID 1484 wrote to memory of 2212	1484	cmd.exe	33
PID 1728 wrote to memory of 2376	1728	a8bdc5b8e43bc79ebf3c52ab929f67ebf6ce624ebed2cadb03698ecefbf11ef3N.exe	34
PID 1728 wrote to memory of 2376	1728	a8bdc5b8e43bc79ebf3c52ab929f67ebf6ce624ebed2cadb03698ecefbf11ef3N.exe	34
PID 1728 wrote to memory of 2376	1728	a8bdc5b8e43bc79ebf3c52ab929f67ebf6ce624ebed2cadb03698ecefbf11ef3N.exe	34
PID 1728 wrote to memory of 2376	1728	a8bdc5b8e43bc79ebf3c52ab929f67ebf6ce624ebed2cadb03698ecefbf11ef3N.exe	34
PID 2376 wrote to memory of 2916	2376	Soundcrd.exe	35
PID 2376 wrote to memory of 2916	2376	Soundcrd.exe	35
PID 2376 wrote to memory of 2916	2376	Soundcrd.exe	35
PID 2376 wrote to memory of 2916	2376	Soundcrd.exe	35
PID 2376 wrote to memory of 2916	2376	Soundcrd.exe	35
PID 2376 wrote to memory of 2916	2376	Soundcrd.exe	35
PID 2376 wrote to memory of 2916	2376	Soundcrd.exe	35
PID 2376 wrote to memory of 2916	2376	Soundcrd.exe	35
PID 2376 wrote to memory of 2916	2376	Soundcrd.exe	35
PID 2376 wrote to memory of 2920	2376	Soundcrd.exe	36
PID 2376 wrote to memory of 2920	2376	Soundcrd.exe	36
PID 2376 wrote to memory of 2920	2376	Soundcrd.exe	36
PID 2376 wrote to memory of 2920	2376	Soundcrd.exe	36
PID 2376 wrote to memory of 2920	2376	Soundcrd.exe	36
PID 2376 wrote to memory of 2920	2376	Soundcrd.exe	36
PID 2376 wrote to memory of 2920	2376	Soundcrd.exe	36
PID 2376 wrote to memory of 2920	2376	Soundcrd.exe	36
PID 2376 wrote to memory of 2920	2376	Soundcrd.exe	36

C:\Users\Admin\AppData\Local\Temp\a8bdc5b8e43bc79ebf3c52ab929f67ebf6ce624ebed2cadb03698ecefbf11ef3N.exe
"C:\Users\Admin\AppData\Local\Temp\a8bdc5b8e43bc79ebf3c52ab929f67ebf6ce624ebed2cadb03698ecefbf11ef3N.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1728
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\XfGWs.bat" "
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1484
- - 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
    - System Location Discovery: System Language Discovery
    PID:2212
- C:\Users\Admin\AppData\Roaming\Soundcrd.exe
  "C:\Users\Admin\AppData\Roaming\Soundcrd.exe"
  2⤵
  - 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:2376
- - C:\Users\Admin\AppData\Roaming\Soundcrd.exe
    C:\Users\Admin\AppData\Roaming\Soundcrd.exe
    3⤵
    - Checks BIOS information in registry
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Checks processor information in registry
    - Enumerates system info in registry
    - Suspicious use of AdjustPrivilegeToken
    PID:2916
- - C:\Users\Admin\AppData\Roaming\Soundcrd.exe
    C:\Users\Admin\AppData\Roaming\Soundcrd.exe
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:2920

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

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\XfGWs.bat

Filesize
139B

MD5
173bcce4810d4901872d0ef4f0bfea4e

SHA1
561b03fdfe68b6419fddf57f32e1aab9a6126a2f

SHA256
10ea37eceabbe80fe9814280b66b957636951dbeeed18a9b4d50a1d24a6f1d1d

SHA512
2401e0a5e3f7bf590a0767449da2249d09717e8c1cb71a7475e81d9615580001cfc38705cd1a5b4edc33f7df043bf195e28e4a5442a32bc879dffc6473bd545e

Download Submit
C:\Users\Admin\AppData\Roaming\Soundcrd.exe

Filesize
574KB

MD5
da84a42bf57f553d9b53bcda0f2400ac

SHA1
4e389a6a8491d5a9b8637969c7199df92358a4fb

SHA256
93c688dfcc818d3b64e0c1e3be42f46584db45149b6ef3c6ac81afe45a2e0c70

SHA512
9fdf1a1c4c6540ae4a0dbb414755de3c70e972c454d55b624d7c21c3cbd8c601a940410d50bb18f874a8d94d7db9816a23d854aabff90682c1a104a29f822e38

Download Submit
memory/1728-43-0x0000000003800000-0x0000000003BEA000-memory.dmp

Filesize
3.9MB

Download
memory/1728-44-0x0000000003800000-0x0000000003BEA000-memory.dmp

Filesize
3.9MB

Download
memory/1728-42-0x0000000003800000-0x0000000003BEA000-memory.dmp

Filesize
3.9MB

Download
memory/1728-48-0x0000000000400000-0x00000000007EA000-memory.dmp

Filesize
3.9MB

Download
memory/1728-0-0x0000000000400000-0x00000000007EA000-memory.dmp

Filesize
3.9MB

Download
memory/2376-58-0x0000000002C80000-0x000000000306A000-memory.dmp

Filesize
3.9MB

Download
memory/2376-46-0x0000000000400000-0x00000000007EA000-memory.dmp

Filesize
3.9MB

Download
memory/2376-71-0x0000000000400000-0x00000000007EA000-memory.dmp

Filesize
3.9MB

Download
memory/2916-62-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2916-84-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2916-60-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2916-61-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2916-53-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2916-59-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2916-64-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2916-63-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2916-100-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2916-55-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2916-96-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2916-92-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2916-88-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2916-74-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2916-57-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2916-80-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2920-77-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2920-68-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2920-69-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2920-70-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2920-65-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads