darkcomet | e9c56421071f4e5aced04599ae888b47253bef3d772fb937229f0f6b4c1b389a

Analysis

max time kernel
51s
max time network
58s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
14-10-2024 19:23

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General

Target

e9c56421071f4e5aced04599ae888b47253bef3d772fb937229f0f6b4c1b389a.exe
Size

574KB
MD5

19af5a72ded9727decd42d191f1d9821
SHA1

be6f7fd7da1d2adb0a4933715e01d233ac97ac7d
SHA256

e9c56421071f4e5aced04599ae888b47253bef3d772fb937229f0f6b4c1b389a
SHA512

eba94c8aebc353645ec7a75e40d0b488a2bb5fa514caf75e65e7792a87555a7dbdfe357052cf40ec5524d585d6584c3f1f0464063c5f82dae4dd58adab4e934d
SSDEEP

12288:zCyEHAWAdljmJqkC3xMX85FSR2f9A08NIX+Vjwd4G/3z1ET4m3HdsubE:zFhWAfn22m0eD1GPz8Hdx4

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

Processes:

Soundcrd.exe

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

Executes dropped EXE 3 IoCs

Processes:

Soundcrd.exeSoundcrd.exeSoundcrd.exe

pid	Process
2872	Soundcrd.exe
2728	Soundcrd.exe
2836	Soundcrd.exe

Loads dropped DLL 7 IoCs

Processes:

e9c56421071f4e5aced04599ae888b47253bef3d772fb937229f0f6b4c1b389a.exeSoundcrd.exe

pid	Process
860	e9c56421071f4e5aced04599ae888b47253bef3d772fb937229f0f6b4c1b389a.exe
860	e9c56421071f4e5aced04599ae888b47253bef3d772fb937229f0f6b4c1b389a.exe
860	e9c56421071f4e5aced04599ae888b47253bef3d772fb937229f0f6b4c1b389a.exe
860	e9c56421071f4e5aced04599ae888b47253bef3d772fb937229f0f6b4c1b389a.exe
860	e9c56421071f4e5aced04599ae888b47253bef3d772fb937229f0f6b4c1b389a.exe
2872	Soundcrd.exe
2872	Soundcrd.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

reg.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000\Software\Microsoft\Windows\CurrentVersion\Run\Mcrosoftt = "C:\\Users\\Admin\\AppData\\Roaming\\Soundcrd.exe"	reg.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

Soundcrd.exe

description	pid	Process	procid_target
PID 2872 set thread context of 2728	2872	Soundcrd.exe	34
PID 2872 set thread context of 2836	2872	Soundcrd.exe	35

UPX packed file 16 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/2836-62-0x0000000000400000-0x0000000000409000-memory.dmp	upx
behavioral1/memory/2836-61-0x0000000000400000-0x0000000000409000-memory.dmp	upx
behavioral1/memory/2836-57-0x0000000000400000-0x0000000000409000-memory.dmp	upx
behavioral1/memory/2728-56-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2728-73-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2728-72-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2728-71-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2728-70-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2728-69-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2728-68-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2728-65-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2728-51-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2728-76-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2836-77-0x0000000000400000-0x0000000000409000-memory.dmp	upx
behavioral1/memory/2728-82-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2728-86-0x0000000000400000-0x00000000004B5000-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

Processes:

e9c56421071f4e5aced04599ae888b47253bef3d772fb937229f0f6b4c1b389a.execmd.exereg.exeSoundcrd.exeSoundcrd.exeSoundcrd.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	e9c56421071f4e5aced04599ae888b47253bef3d772fb937229f0f6b4c1b389a.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

Processes:

Soundcrd.exe

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

Processes:

Soundcrd.exe

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

Suspicious use of AdjustPrivilegeToken 24 IoCs

Processes:

Soundcrd.exeSoundcrd.exe

description	pid	Process
Token: SeDebugPrivilege	2836	Soundcrd.exe
Token: SeIncreaseQuotaPrivilege	2728	Soundcrd.exe
Token: SeSecurityPrivilege	2728	Soundcrd.exe
Token: SeTakeOwnershipPrivilege	2728	Soundcrd.exe
Token: SeLoadDriverPrivilege	2728	Soundcrd.exe
Token: SeSystemProfilePrivilege	2728	Soundcrd.exe
Token: SeSystemtimePrivilege	2728	Soundcrd.exe
Token: SeProfSingleProcessPrivilege	2728	Soundcrd.exe
Token: SeIncBasePriorityPrivilege	2728	Soundcrd.exe
Token: SeCreatePagefilePrivilege	2728	Soundcrd.exe
Token: SeBackupPrivilege	2728	Soundcrd.exe
Token: SeRestorePrivilege	2728	Soundcrd.exe
Token: SeShutdownPrivilege	2728	Soundcrd.exe
Token: SeDebugPrivilege	2728	Soundcrd.exe
Token: SeSystemEnvironmentPrivilege	2728	Soundcrd.exe
Token: SeChangeNotifyPrivilege	2728	Soundcrd.exe
Token: SeRemoteShutdownPrivilege	2728	Soundcrd.exe
Token: SeUndockPrivilege	2728	Soundcrd.exe
Token: SeManageVolumePrivilege	2728	Soundcrd.exe
Token: SeImpersonatePrivilege	2728	Soundcrd.exe
Token: SeCreateGlobalPrivilege	2728	Soundcrd.exe
Token: 33	2728	Soundcrd.exe
Token: 34	2728	Soundcrd.exe
Token: 35	2728	Soundcrd.exe

Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

e9c56421071f4e5aced04599ae888b47253bef3d772fb937229f0f6b4c1b389a.exeSoundcrd.exeSoundcrd.exe

pid	Process
860	e9c56421071f4e5aced04599ae888b47253bef3d772fb937229f0f6b4c1b389a.exe
2872	Soundcrd.exe
2836	Soundcrd.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

e9c56421071f4e5aced04599ae888b47253bef3d772fb937229f0f6b4c1b389a.execmd.exeSoundcrd.exe

description	pid	Process	procid_target
PID 860 wrote to memory of 1792	860	e9c56421071f4e5aced04599ae888b47253bef3d772fb937229f0f6b4c1b389a.exe	30
PID 860 wrote to memory of 1792	860	e9c56421071f4e5aced04599ae888b47253bef3d772fb937229f0f6b4c1b389a.exe	30
PID 860 wrote to memory of 1792	860	e9c56421071f4e5aced04599ae888b47253bef3d772fb937229f0f6b4c1b389a.exe	30
PID 860 wrote to memory of 1792	860	e9c56421071f4e5aced04599ae888b47253bef3d772fb937229f0f6b4c1b389a.exe	30
PID 1792 wrote to memory of 2260	1792	cmd.exe	32
PID 1792 wrote to memory of 2260	1792	cmd.exe	32
PID 1792 wrote to memory of 2260	1792	cmd.exe	32
PID 1792 wrote to memory of 2260	1792	cmd.exe	32
PID 860 wrote to memory of 2872	860	e9c56421071f4e5aced04599ae888b47253bef3d772fb937229f0f6b4c1b389a.exe	33
PID 860 wrote to memory of 2872	860	e9c56421071f4e5aced04599ae888b47253bef3d772fb937229f0f6b4c1b389a.exe	33
PID 860 wrote to memory of 2872	860	e9c56421071f4e5aced04599ae888b47253bef3d772fb937229f0f6b4c1b389a.exe	33
PID 860 wrote to memory of 2872	860	e9c56421071f4e5aced04599ae888b47253bef3d772fb937229f0f6b4c1b389a.exe	33
PID 2872 wrote to memory of 2728	2872	Soundcrd.exe	34
PID 2872 wrote to memory of 2728	2872	Soundcrd.exe	34
PID 2872 wrote to memory of 2728	2872	Soundcrd.exe	34
PID 2872 wrote to memory of 2728	2872	Soundcrd.exe	34
PID 2872 wrote to memory of 2728	2872	Soundcrd.exe	34
PID 2872 wrote to memory of 2728	2872	Soundcrd.exe	34
PID 2872 wrote to memory of 2728	2872	Soundcrd.exe	34
PID 2872 wrote to memory of 2728	2872	Soundcrd.exe	34
PID 2872 wrote to memory of 2728	2872	Soundcrd.exe	34
PID 2872 wrote to memory of 2836	2872	Soundcrd.exe	35
PID 2872 wrote to memory of 2836	2872	Soundcrd.exe	35
PID 2872 wrote to memory of 2836	2872	Soundcrd.exe	35
PID 2872 wrote to memory of 2836	2872	Soundcrd.exe	35
PID 2872 wrote to memory of 2836	2872	Soundcrd.exe	35
PID 2872 wrote to memory of 2836	2872	Soundcrd.exe	35
PID 2872 wrote to memory of 2836	2872	Soundcrd.exe	35
PID 2872 wrote to memory of 2836	2872	Soundcrd.exe	35
PID 2872 wrote to memory of 2836	2872	Soundcrd.exe	35

C:\Users\Admin\AppData\Local\Temp\e9c56421071f4e5aced04599ae888b47253bef3d772fb937229f0f6b4c1b389a.exe
"C:\Users\Admin\AppData\Local\Temp\e9c56421071f4e5aced04599ae888b47253bef3d772fb937229f0f6b4c1b389a.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:860
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\ZhFUa.bat" "
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1792
- - 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:2260
- 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:2872
- - 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:2728
- - 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:2836

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\ZhFUa.bat

Filesize
139B

MD5
173bcce4810d4901872d0ef4f0bfea4e

SHA1
561b03fdfe68b6419fddf57f32e1aab9a6126a2f

SHA256
10ea37eceabbe80fe9814280b66b957636951dbeeed18a9b4d50a1d24a6f1d1d

SHA512
2401e0a5e3f7bf590a0767449da2249d09717e8c1cb71a7475e81d9615580001cfc38705cd1a5b4edc33f7df043bf195e28e4a5442a32bc879dffc6473bd545e

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

Filesize
574KB

MD5
669c3674f33525acc3219f4c1340e917

SHA1
87b5c3d17aac2d8ac0c749099c46fbac11df3975

SHA256
b736056f76a7e23f3453a296e8d2a15d208f05e119e6ebccdb5617398fe82a4d

SHA512
f155798074fa120041fa797814340910e57fe7d155bf214d748c5ddc1d12c3ceca64aa8efca82ae40c86ca89d14815a5af4f299710a7524d7ea275d6efd3650e

Download Submit
memory/860-0-0x0000000000400000-0x00000000007EA000-memory.dmp

Filesize
3.9MB

Download
memory/860-45-0x0000000000400000-0x00000000007EA000-memory.dmp

Filesize
3.9MB

Download
memory/860-44-0x00000000039B0000-0x0000000003D9A000-memory.dmp

Filesize
3.9MB

Download
memory/860-74-0x00000000039B0000-0x0000000003D9A000-memory.dmp

Filesize
3.9MB

Download
memory/860-50-0x00000000039B0000-0x0000000003D9A000-memory.dmp

Filesize
3.9MB

Download
memory/2728-70-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2728-65-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2728-56-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2728-86-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2728-73-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2728-72-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2728-71-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2728-51-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2728-69-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2728-68-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2728-76-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2728-82-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2836-57-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2836-61-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2836-62-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2836-77-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2872-64-0x0000000002C30000-0x000000000301A000-memory.dmp

Filesize
3.9MB

Download
memory/2872-63-0x0000000000400000-0x00000000007EA000-memory.dmp

Filesize
3.9MB

Download
memory/2872-75-0x0000000002C30000-0x000000000301A000-memory.dmp

Filesize
3.9MB

Download
memory/2872-52-0x0000000000400000-0x00000000007EA000-memory.dmp

Filesize
3.9MB

Download
memory/2872-55-0x0000000002B30000-0x0000000002F1A000-memory.dmp

Filesize
3.9MB

Download