darkcomet | d836095ef4a7e6672d0b3103a311398ca07db68851a55e9613701f12c8536d3f

Analysis

max time kernel
114s
max time network
120s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
29-11-2024 09:56

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General

Target

d836095ef4a7e6672d0b3103a311398ca07db68851a55e9613701f12c8536d3fN.exe
Size

574KB
MD5

712375b869c3f6e5e7eac5cc4264add0
SHA1

4d47f5a0d7bb7949faabfe5b93f86eed99f42f1e
SHA256

d836095ef4a7e6672d0b3103a311398ca07db68851a55e9613701f12c8536d3f
SHA512

5410bd951ce9f94c8a06e7ace7933a13600465862f8734e914b4b825460c0a79e27d76efa38b64f99d21a219f7c5ab8e5a89fb8a9d495bd7e4293314c8743dc3
SSDEEP

12288:zCyEHAWAdljmJqkC3xMX85FSR2f9A08NIX+Vjwd4G/3z1ET4m3Hdsubf:zFhWAfn22m0eD1GPz8Hdxb

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
Darkcomet family
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
1192	Soundcrd.exe
2660	Soundcrd.exe
2812	Soundcrd.exe

Loads dropped DLL 5 IoCs

pid	Process
1832	d836095ef4a7e6672d0b3103a311398ca07db68851a55e9613701f12c8536d3fN.exe
1832	d836095ef4a7e6672d0b3103a311398ca07db68851a55e9613701f12c8536d3fN.exe
1832	d836095ef4a7e6672d0b3103a311398ca07db68851a55e9613701f12c8536d3fN.exe
1832	d836095ef4a7e6672d0b3103a311398ca07db68851a55e9613701f12c8536d3fN.exe
1832	d836095ef4a7e6672d0b3103a311398ca07db68851a55e9613701f12c8536d3fN.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-1-5-21-3692679935-4019334568-335155002-1000\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 1192 set thread context of 2660	1192	Soundcrd.exe	34
PID 1192 set thread context of 2812	1192	Soundcrd.exe	35

UPX packed file 20 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2812-60-0x0000000000400000-0x0000000000409000-memory.dmp	upx
behavioral1/memory/2660-67-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2660-69-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2660-71-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2660-70-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2660-68-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2812-66-0x0000000000400000-0x0000000000409000-memory.dmp	upx
behavioral1/memory/2812-62-0x0000000000400000-0x0000000000409000-memory.dmp	upx
behavioral1/memory/2660-59-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2812-57-0x0000000000400000-0x0000000000409000-memory.dmp	upx
behavioral1/memory/2660-56-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2660-55-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2660-53-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2660-72-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2812-73-0x0000000000400000-0x0000000000409000-memory.dmp	upx
behavioral1/memory/2660-78-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2660-82-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2660-86-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2660-90-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2660-94-0x0000000000400000-0x00000000004B5000-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	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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	d836095ef4a7e6672d0b3103a311398ca07db68851a55e9613701f12c8536d3fN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.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: SeDebugPrivilege	2812	Soundcrd.exe
Token: SeIncreaseQuotaPrivilege	2660	Soundcrd.exe
Token: SeSecurityPrivilege	2660	Soundcrd.exe
Token: SeTakeOwnershipPrivilege	2660	Soundcrd.exe
Token: SeLoadDriverPrivilege	2660	Soundcrd.exe
Token: SeSystemProfilePrivilege	2660	Soundcrd.exe
Token: SeSystemtimePrivilege	2660	Soundcrd.exe
Token: SeProfSingleProcessPrivilege	2660	Soundcrd.exe
Token: SeIncBasePriorityPrivilege	2660	Soundcrd.exe
Token: SeCreatePagefilePrivilege	2660	Soundcrd.exe
Token: SeBackupPrivilege	2660	Soundcrd.exe
Token: SeRestorePrivilege	2660	Soundcrd.exe
Token: SeShutdownPrivilege	2660	Soundcrd.exe
Token: SeDebugPrivilege	2660	Soundcrd.exe
Token: SeSystemEnvironmentPrivilege	2660	Soundcrd.exe
Token: SeChangeNotifyPrivilege	2660	Soundcrd.exe
Token: SeRemoteShutdownPrivilege	2660	Soundcrd.exe
Token: SeUndockPrivilege	2660	Soundcrd.exe
Token: SeManageVolumePrivilege	2660	Soundcrd.exe
Token: SeImpersonatePrivilege	2660	Soundcrd.exe
Token: SeCreateGlobalPrivilege	2660	Soundcrd.exe
Token: 33	2660	Soundcrd.exe
Token: 34	2660	Soundcrd.exe
Token: 35	2660	Soundcrd.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
1832	d836095ef4a7e6672d0b3103a311398ca07db68851a55e9613701f12c8536d3fN.exe
1192	Soundcrd.exe
2812	Soundcrd.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1832 wrote to memory of 1972	1832	d836095ef4a7e6672d0b3103a311398ca07db68851a55e9613701f12c8536d3fN.exe	30
PID 1832 wrote to memory of 1972	1832	d836095ef4a7e6672d0b3103a311398ca07db68851a55e9613701f12c8536d3fN.exe	30
PID 1832 wrote to memory of 1972	1832	d836095ef4a7e6672d0b3103a311398ca07db68851a55e9613701f12c8536d3fN.exe	30
PID 1832 wrote to memory of 1972	1832	d836095ef4a7e6672d0b3103a311398ca07db68851a55e9613701f12c8536d3fN.exe	30
PID 1972 wrote to memory of 2028	1972	cmd.exe	32
PID 1972 wrote to memory of 2028	1972	cmd.exe	32
PID 1972 wrote to memory of 2028	1972	cmd.exe	32
PID 1972 wrote to memory of 2028	1972	cmd.exe	32
PID 1832 wrote to memory of 1192	1832	d836095ef4a7e6672d0b3103a311398ca07db68851a55e9613701f12c8536d3fN.exe	33
PID 1832 wrote to memory of 1192	1832	d836095ef4a7e6672d0b3103a311398ca07db68851a55e9613701f12c8536d3fN.exe	33
PID 1832 wrote to memory of 1192	1832	d836095ef4a7e6672d0b3103a311398ca07db68851a55e9613701f12c8536d3fN.exe	33
PID 1832 wrote to memory of 1192	1832	d836095ef4a7e6672d0b3103a311398ca07db68851a55e9613701f12c8536d3fN.exe	33
PID 1192 wrote to memory of 2660	1192	Soundcrd.exe	34
PID 1192 wrote to memory of 2660	1192	Soundcrd.exe	34
PID 1192 wrote to memory of 2660	1192	Soundcrd.exe	34
PID 1192 wrote to memory of 2660	1192	Soundcrd.exe	34
PID 1192 wrote to memory of 2660	1192	Soundcrd.exe	34
PID 1192 wrote to memory of 2660	1192	Soundcrd.exe	34
PID 1192 wrote to memory of 2660	1192	Soundcrd.exe	34
PID 1192 wrote to memory of 2660	1192	Soundcrd.exe	34
PID 1192 wrote to memory of 2660	1192	Soundcrd.exe	34
PID 1192 wrote to memory of 2812	1192	Soundcrd.exe	35
PID 1192 wrote to memory of 2812	1192	Soundcrd.exe	35
PID 1192 wrote to memory of 2812	1192	Soundcrd.exe	35
PID 1192 wrote to memory of 2812	1192	Soundcrd.exe	35
PID 1192 wrote to memory of 2812	1192	Soundcrd.exe	35
PID 1192 wrote to memory of 2812	1192	Soundcrd.exe	35
PID 1192 wrote to memory of 2812	1192	Soundcrd.exe	35
PID 1192 wrote to memory of 2812	1192	Soundcrd.exe	35
PID 1192 wrote to memory of 2812	1192	Soundcrd.exe	35

C:\Users\Admin\AppData\Local\Temp\d836095ef4a7e6672d0b3103a311398ca07db68851a55e9613701f12c8536d3fN.exe
"C:\Users\Admin\AppData\Local\Temp\d836095ef4a7e6672d0b3103a311398ca07db68851a55e9613701f12c8536d3fN.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1832
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\rNlXG.bat" "
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1972
- - 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:2028
- C:\Users\Admin\AppData\Roaming\Soundcrd.exe
  "C:\Users\Admin\AppData\Roaming\Soundcrd.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1192
- - 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:2660
- - 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:2812

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\rNlXG.bat

Filesize
139B

MD5
173bcce4810d4901872d0ef4f0bfea4e

SHA1
561b03fdfe68b6419fddf57f32e1aab9a6126a2f

SHA256
10ea37eceabbe80fe9814280b66b957636951dbeeed18a9b4d50a1d24a6f1d1d

SHA512
2401e0a5e3f7bf590a0767449da2249d09717e8c1cb71a7475e81d9615580001cfc38705cd1a5b4edc33f7df043bf195e28e4a5442a32bc879dffc6473bd545e

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

Filesize
574KB

MD5
791b36e5d5015ee0cb1b562941bbed32

SHA1
400b55b83105d58a010ca05cfdd77682b87eb40b

SHA256
69268969cc447b7d34ce748885309e1f18939dd1e832a771fad5b05faa21eadf

SHA512
7608490a5cc27883b41a24f7c1d7350c064ac33bbec9039dbd8560f931ae73f3a33a03325f54eaf162683be9ab4db58a1c298366745f88cd300b1b19297bc8de

Download Submit
memory/1192-63-0x0000000000400000-0x00000000007EA000-memory.dmp

Filesize
3.9MB

Download
memory/1192-47-0x0000000000400000-0x00000000007EA000-memory.dmp

Filesize
3.9MB

Download
memory/1832-42-0x00000000034A0000-0x000000000388A000-memory.dmp

Filesize
3.9MB

Download
memory/1832-45-0x00000000034A0000-0x000000000388A000-memory.dmp

Filesize
3.9MB

Download
memory/1832-49-0x0000000000400000-0x00000000007EA000-memory.dmp

Filesize
3.9MB

Download
memory/1832-46-0x00000000034A0000-0x000000000388A000-memory.dmp

Filesize
3.9MB

Download
memory/1832-44-0x00000000034A0000-0x000000000388A000-memory.dmp

Filesize
3.9MB

Download
memory/1832-0-0x0000000000400000-0x00000000007EA000-memory.dmp

Filesize
3.9MB

Download
memory/2660-70-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2660-72-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2660-69-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2660-71-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2660-94-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2660-68-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2660-90-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2660-86-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2660-59-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2660-82-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2660-56-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2660-55-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2660-53-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2660-67-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2660-78-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2812-73-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2812-57-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2812-62-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2812-66-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2812-60-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads