darkcomet | 0cf7eda61bb962e320470af8441123db0253eb6e2f47302983044ec035b1891b

Analysis

max time kernel
149s
max time network
142s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
19-10-2024 18:28

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General

Target

0cf7eda61bb962e320470af8441123db0253eb6e2f47302983044ec035b1891b.exe
Size

592KB
MD5

4c07b73b8f0a036675ea254cb9fe3417
SHA1

838522dc8f95c2ee78bc9bc786c6d1c6cc8e3f03
SHA256

0cf7eda61bb962e320470af8441123db0253eb6e2f47302983044ec035b1891b
SHA512

bd9308617edbe69fbd5ef67e39dbd248ce9af6a1264ab544394f44b7aac975fa3b14a5d780a2d06d682f35bb01a429f5a70fa70b390169343831d2b40a4ee573
SSDEEP

12288:wcWRJxhIUKofd9S88itJsL6s8GwUF81yn0FI/6IC0XoSv:TW/xhIUKofSytJsL6HUP0OHCU

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
2744	Soundcrd.exe
2904	Soundcrd.exe
2796	Soundcrd.exe

Loads dropped DLL 7 IoCs

Processes:

0cf7eda61bb962e320470af8441123db0253eb6e2f47302983044ec035b1891b.exeSoundcrd.exe

pid	Process
1904	0cf7eda61bb962e320470af8441123db0253eb6e2f47302983044ec035b1891b.exe
1904	0cf7eda61bb962e320470af8441123db0253eb6e2f47302983044ec035b1891b.exe
1904	0cf7eda61bb962e320470af8441123db0253eb6e2f47302983044ec035b1891b.exe
1904	0cf7eda61bb962e320470af8441123db0253eb6e2f47302983044ec035b1891b.exe
1904	0cf7eda61bb962e320470af8441123db0253eb6e2f47302983044ec035b1891b.exe
2744	Soundcrd.exe
2744	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 2744 set thread context of 2904	2744	Soundcrd.exe	34
PID 2744 set thread context of 2796	2744	Soundcrd.exe	35

UPX packed file 27 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/1904-0-0x0000000000400000-0x00000000007EB000-memory.dmp	upx
behavioral1/files/0x0009000000016d06-40.dat	upx
behavioral1/memory/1904-46-0x0000000000400000-0x00000000007EB000-memory.dmp	upx
behavioral1/memory/2744-48-0x0000000000400000-0x00000000007EB000-memory.dmp	upx
behavioral1/memory/2744-53-0x0000000002B20000-0x0000000002F0B000-memory.dmp	upx
behavioral1/memory/2904-54-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2744-68-0x0000000000400000-0x00000000007EB000-memory.dmp	upx
behavioral1/memory/2904-67-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2796-64-0x0000000000400000-0x0000000000409000-memory.dmp	upx
behavioral1/memory/2904-62-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2796-63-0x0000000000400000-0x0000000000409000-memory.dmp	upx
behavioral1/memory/2796-60-0x0000000000400000-0x0000000000409000-memory.dmp	upx
behavioral1/memory/2904-59-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2904-71-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2904-58-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2904-57-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2904-73-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2904-72-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/1904-74-0x0000000003A80000-0x0000000003E6B000-memory.dmp	upx
behavioral1/memory/2904-75-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2796-77-0x0000000000400000-0x0000000000409000-memory.dmp	upx
behavioral1/memory/2904-80-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2904-84-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2904-88-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2904-92-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2904-96-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2904-102-0x0000000000400000-0x00000000004B5000-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:

0cf7eda61bb962e320470af8441123db0253eb6e2f47302983044ec035b1891b.execmd.exereg.exeSoundcrd.exeSoundcrd.exeSoundcrd.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	0cf7eda61bb962e320470af8441123db0253eb6e2f47302983044ec035b1891b.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 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
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	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	2796	Soundcrd.exe
Token: SeIncreaseQuotaPrivilege	2904	Soundcrd.exe
Token: SeSecurityPrivilege	2904	Soundcrd.exe
Token: SeTakeOwnershipPrivilege	2904	Soundcrd.exe
Token: SeLoadDriverPrivilege	2904	Soundcrd.exe
Token: SeSystemProfilePrivilege	2904	Soundcrd.exe
Token: SeSystemtimePrivilege	2904	Soundcrd.exe
Token: SeProfSingleProcessPrivilege	2904	Soundcrd.exe
Token: SeIncBasePriorityPrivilege	2904	Soundcrd.exe
Token: SeCreatePagefilePrivilege	2904	Soundcrd.exe
Token: SeBackupPrivilege	2904	Soundcrd.exe
Token: SeRestorePrivilege	2904	Soundcrd.exe
Token: SeShutdownPrivilege	2904	Soundcrd.exe
Token: SeDebugPrivilege	2904	Soundcrd.exe
Token: SeSystemEnvironmentPrivilege	2904	Soundcrd.exe
Token: SeChangeNotifyPrivilege	2904	Soundcrd.exe
Token: SeRemoteShutdownPrivilege	2904	Soundcrd.exe
Token: SeUndockPrivilege	2904	Soundcrd.exe
Token: SeManageVolumePrivilege	2904	Soundcrd.exe
Token: SeImpersonatePrivilege	2904	Soundcrd.exe
Token: SeCreateGlobalPrivilege	2904	Soundcrd.exe
Token: 33	2904	Soundcrd.exe
Token: 34	2904	Soundcrd.exe
Token: 35	2904	Soundcrd.exe

Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

0cf7eda61bb962e320470af8441123db0253eb6e2f47302983044ec035b1891b.exeSoundcrd.exeSoundcrd.exe

pid	Process
1904	0cf7eda61bb962e320470af8441123db0253eb6e2f47302983044ec035b1891b.exe
2744	Soundcrd.exe
2796	Soundcrd.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

0cf7eda61bb962e320470af8441123db0253eb6e2f47302983044ec035b1891b.execmd.exeSoundcrd.exe

description	pid	Process	procid_target
PID 1904 wrote to memory of 2720	1904	0cf7eda61bb962e320470af8441123db0253eb6e2f47302983044ec035b1891b.exe	30
PID 1904 wrote to memory of 2720	1904	0cf7eda61bb962e320470af8441123db0253eb6e2f47302983044ec035b1891b.exe	30
PID 1904 wrote to memory of 2720	1904	0cf7eda61bb962e320470af8441123db0253eb6e2f47302983044ec035b1891b.exe	30
PID 1904 wrote to memory of 2720	1904	0cf7eda61bb962e320470af8441123db0253eb6e2f47302983044ec035b1891b.exe	30
PID 2720 wrote to memory of 2248	2720	cmd.exe	32
PID 2720 wrote to memory of 2248	2720	cmd.exe	32
PID 2720 wrote to memory of 2248	2720	cmd.exe	32
PID 2720 wrote to memory of 2248	2720	cmd.exe	32
PID 1904 wrote to memory of 2744	1904	0cf7eda61bb962e320470af8441123db0253eb6e2f47302983044ec035b1891b.exe	33
PID 1904 wrote to memory of 2744	1904	0cf7eda61bb962e320470af8441123db0253eb6e2f47302983044ec035b1891b.exe	33
PID 1904 wrote to memory of 2744	1904	0cf7eda61bb962e320470af8441123db0253eb6e2f47302983044ec035b1891b.exe	33
PID 1904 wrote to memory of 2744	1904	0cf7eda61bb962e320470af8441123db0253eb6e2f47302983044ec035b1891b.exe	33
PID 2744 wrote to memory of 2904	2744	Soundcrd.exe	34
PID 2744 wrote to memory of 2904	2744	Soundcrd.exe	34
PID 2744 wrote to memory of 2904	2744	Soundcrd.exe	34
PID 2744 wrote to memory of 2904	2744	Soundcrd.exe	34
PID 2744 wrote to memory of 2904	2744	Soundcrd.exe	34
PID 2744 wrote to memory of 2904	2744	Soundcrd.exe	34
PID 2744 wrote to memory of 2904	2744	Soundcrd.exe	34
PID 2744 wrote to memory of 2904	2744	Soundcrd.exe	34
PID 2744 wrote to memory of 2904	2744	Soundcrd.exe	34
PID 2744 wrote to memory of 2796	2744	Soundcrd.exe	35
PID 2744 wrote to memory of 2796	2744	Soundcrd.exe	35
PID 2744 wrote to memory of 2796	2744	Soundcrd.exe	35
PID 2744 wrote to memory of 2796	2744	Soundcrd.exe	35
PID 2744 wrote to memory of 2796	2744	Soundcrd.exe	35
PID 2744 wrote to memory of 2796	2744	Soundcrd.exe	35
PID 2744 wrote to memory of 2796	2744	Soundcrd.exe	35
PID 2744 wrote to memory of 2796	2744	Soundcrd.exe	35
PID 2744 wrote to memory of 2796	2744	Soundcrd.exe	35

C:\Users\Admin\AppData\Local\Temp\0cf7eda61bb962e320470af8441123db0253eb6e2f47302983044ec035b1891b.exe
"C:\Users\Admin\AppData\Local\Temp\0cf7eda61bb962e320470af8441123db0253eb6e2f47302983044ec035b1891b.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1904
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\vMwkL.bat" "
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2720
- - 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:2248
- 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:2744
- - 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:2904
- - 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:2796

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\vMwkL.bat

Filesize
139B

MD5
173bcce4810d4901872d0ef4f0bfea4e

SHA1
561b03fdfe68b6419fddf57f32e1aab9a6126a2f

SHA256
10ea37eceabbe80fe9814280b66b957636951dbeeed18a9b4d50a1d24a6f1d1d

SHA512
2401e0a5e3f7bf590a0767449da2249d09717e8c1cb71a7475e81d9615580001cfc38705cd1a5b4edc33f7df043bf195e28e4a5442a32bc879dffc6473bd545e

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

Filesize
592KB

MD5
0d1d083afb67ada1ea452e051fda45db

SHA1
2d01ee62c8bf96ae0b5dc2e9de445806a489b13e

SHA256
82fe783657216a9ad4990564a3bf36d5197d310434aa9e26f02b470a021549cc

SHA512
c73e3fe1addf4c610e5392301fdcb3f2eb375ddb6c6400429f79bc05a002cabb6a17b155888d7c3f3b8caea90c9a2233b48a9a863b8da7ea07998cd89ec17537

Download Submit
memory/1904-46-0x0000000000400000-0x00000000007EB000-memory.dmp

Filesize
3.9MB

Download
memory/1904-47-0x0000000003A80000-0x0000000003E6B000-memory.dmp

Filesize
3.9MB

Download
memory/1904-43-0x0000000003A80000-0x0000000003E6B000-memory.dmp

Filesize
3.9MB

Download
memory/1904-42-0x0000000003A80000-0x0000000003E6B000-memory.dmp

Filesize
3.9MB

Download
memory/1904-74-0x0000000003A80000-0x0000000003E6B000-memory.dmp

Filesize
3.9MB

Download
memory/1904-0-0x0000000000400000-0x00000000007EB000-memory.dmp

Filesize
3.9MB

Download
memory/2744-66-0x0000000002C20000-0x000000000300B000-memory.dmp

Filesize
3.9MB

Download
memory/2744-48-0x0000000000400000-0x00000000007EB000-memory.dmp

Filesize
3.9MB

Download
memory/2744-53-0x0000000002B20000-0x0000000002F0B000-memory.dmp

Filesize
3.9MB

Download
memory/2744-68-0x0000000000400000-0x00000000007EB000-memory.dmp

Filesize
3.9MB

Download
memory/2796-60-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2796-64-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2796-77-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2796-63-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2904-59-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2904-54-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2904-71-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2904-58-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2904-57-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2904-73-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2904-72-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2904-67-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2904-75-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2904-62-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2904-80-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2904-84-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2904-88-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2904-92-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2904-96-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2904-102-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download