darkcomet | fc6f9d52a9a67fa848a16fbb3ad29c5f1ef81f395ca25a62ffb717950c626167

Analysis

max time kernel
113s
max time network
114s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
13-11-2024 23:04

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General

Target

df7b910bbc8fdb3e6f99037236ac9c84b42c42639ccf9c63939a79b6457b6185N.exe
Size

574KB
MD5

251756e54ff429347fd040aacfada6ed
SHA1

d515f92a201466d01e7bc5d05c597888865e3778
SHA256

fc6f9d52a9a67fa848a16fbb3ad29c5f1ef81f395ca25a62ffb717950c626167
SHA512

22eca0bf22a2b1be9ff7a5415228e5f0259be80e9af6ade1cb08727cb13457bf9089e4fdc1340e519c763419e0f09761ed7de41dc406f25d118082814dd91c47
SSDEEP

12288:zCyEHAWAdljmJqkC3xMX85FSR2f9A08NIX+Vjwd4G/3z1ET4m3HdsubF:zFhWAfn22m0eD1GPz8Hdxh

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

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
2088	Soundcrd.exe
2764	Soundcrd.exe
2628	Soundcrd.exe

Loads dropped DLL 6 IoCs

Processes:

df7b910bbc8fdb3e6f99037236ac9c84b42c42639ccf9c63939a79b6457b6185N.exeSoundcrd.exe

pid	Process
1724	df7b910bbc8fdb3e6f99037236ac9c84b42c42639ccf9c63939a79b6457b6185N.exe
1724	df7b910bbc8fdb3e6f99037236ac9c84b42c42639ccf9c63939a79b6457b6185N.exe
1724	df7b910bbc8fdb3e6f99037236ac9c84b42c42639ccf9c63939a79b6457b6185N.exe
1724	df7b910bbc8fdb3e6f99037236ac9c84b42c42639ccf9c63939a79b6457b6185N.exe
1724	df7b910bbc8fdb3e6f99037236ac9c84b42c42639ccf9c63939a79b6457b6185N.exe
2088	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-1-5-21-3063565911-2056067323-3330884624-1000\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 2088 set thread context of 2764	2088	Soundcrd.exe	34
PID 2088 set thread context of 2628	2088	Soundcrd.exe	35

UPX packed file 19 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/2764-54-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2764-56-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2764-57-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2764-58-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2764-60-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2764-59-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2764-61-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2764-64-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2764-63-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2628-62-0x0000000000400000-0x0000000000409000-memory.dmp	upx
behavioral1/memory/2628-67-0x0000000000400000-0x0000000000409000-memory.dmp	upx
behavioral1/memory/2628-68-0x0000000000400000-0x0000000000409000-memory.dmp	upx
behavioral1/memory/2764-72-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2628-74-0x0000000000400000-0x0000000000409000-memory.dmp	upx
behavioral1/memory/2764-77-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2764-81-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2764-85-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2764-89-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2764-93-0x0000000000400000-0x00000000004B5000-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:

df7b910bbc8fdb3e6f99037236ac9c84b42c42639ccf9c63939a79b6457b6185N.execmd.exereg.exeSoundcrd.exeSoundcrd.exeSoundcrd.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	df7b910bbc8fdb3e6f99037236ac9c84b42c42639ccf9c63939a79b6457b6185N.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: SeIncreaseQuotaPrivilege	2764	Soundcrd.exe
Token: SeSecurityPrivilege	2764	Soundcrd.exe
Token: SeTakeOwnershipPrivilege	2764	Soundcrd.exe
Token: SeLoadDriverPrivilege	2764	Soundcrd.exe
Token: SeSystemProfilePrivilege	2764	Soundcrd.exe
Token: SeSystemtimePrivilege	2764	Soundcrd.exe
Token: SeProfSingleProcessPrivilege	2764	Soundcrd.exe
Token: SeIncBasePriorityPrivilege	2764	Soundcrd.exe
Token: SeCreatePagefilePrivilege	2764	Soundcrd.exe
Token: SeBackupPrivilege	2764	Soundcrd.exe
Token: SeRestorePrivilege	2764	Soundcrd.exe
Token: SeShutdownPrivilege	2764	Soundcrd.exe
Token: SeDebugPrivilege	2764	Soundcrd.exe
Token: SeSystemEnvironmentPrivilege	2764	Soundcrd.exe
Token: SeChangeNotifyPrivilege	2764	Soundcrd.exe
Token: SeRemoteShutdownPrivilege	2764	Soundcrd.exe
Token: SeUndockPrivilege	2764	Soundcrd.exe
Token: SeManageVolumePrivilege	2764	Soundcrd.exe
Token: SeImpersonatePrivilege	2764	Soundcrd.exe
Token: SeCreateGlobalPrivilege	2764	Soundcrd.exe
Token: 33	2764	Soundcrd.exe
Token: 34	2764	Soundcrd.exe
Token: 35	2764	Soundcrd.exe
Token: SeDebugPrivilege	2628	Soundcrd.exe

Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

df7b910bbc8fdb3e6f99037236ac9c84b42c42639ccf9c63939a79b6457b6185N.exeSoundcrd.exeSoundcrd.exe

pid	Process
1724	df7b910bbc8fdb3e6f99037236ac9c84b42c42639ccf9c63939a79b6457b6185N.exe
2088	Soundcrd.exe
2628	Soundcrd.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

df7b910bbc8fdb3e6f99037236ac9c84b42c42639ccf9c63939a79b6457b6185N.execmd.exeSoundcrd.exe

description	pid	Process	procid_target
PID 1724 wrote to memory of 3052	1724	df7b910bbc8fdb3e6f99037236ac9c84b42c42639ccf9c63939a79b6457b6185N.exe	30
PID 1724 wrote to memory of 3052	1724	df7b910bbc8fdb3e6f99037236ac9c84b42c42639ccf9c63939a79b6457b6185N.exe	30
PID 1724 wrote to memory of 3052	1724	df7b910bbc8fdb3e6f99037236ac9c84b42c42639ccf9c63939a79b6457b6185N.exe	30
PID 1724 wrote to memory of 3052	1724	df7b910bbc8fdb3e6f99037236ac9c84b42c42639ccf9c63939a79b6457b6185N.exe	30
PID 3052 wrote to memory of 2328	3052	cmd.exe	32
PID 3052 wrote to memory of 2328	3052	cmd.exe	32
PID 3052 wrote to memory of 2328	3052	cmd.exe	32
PID 3052 wrote to memory of 2328	3052	cmd.exe	32
PID 1724 wrote to memory of 2088	1724	df7b910bbc8fdb3e6f99037236ac9c84b42c42639ccf9c63939a79b6457b6185N.exe	33
PID 1724 wrote to memory of 2088	1724	df7b910bbc8fdb3e6f99037236ac9c84b42c42639ccf9c63939a79b6457b6185N.exe	33
PID 1724 wrote to memory of 2088	1724	df7b910bbc8fdb3e6f99037236ac9c84b42c42639ccf9c63939a79b6457b6185N.exe	33
PID 1724 wrote to memory of 2088	1724	df7b910bbc8fdb3e6f99037236ac9c84b42c42639ccf9c63939a79b6457b6185N.exe	33
PID 2088 wrote to memory of 2764	2088	Soundcrd.exe	34
PID 2088 wrote to memory of 2764	2088	Soundcrd.exe	34
PID 2088 wrote to memory of 2764	2088	Soundcrd.exe	34
PID 2088 wrote to memory of 2764	2088	Soundcrd.exe	34
PID 2088 wrote to memory of 2764	2088	Soundcrd.exe	34
PID 2088 wrote to memory of 2764	2088	Soundcrd.exe	34
PID 2088 wrote to memory of 2764	2088	Soundcrd.exe	34
PID 2088 wrote to memory of 2764	2088	Soundcrd.exe	34
PID 2088 wrote to memory of 2764	2088	Soundcrd.exe	34
PID 2088 wrote to memory of 2628	2088	Soundcrd.exe	35
PID 2088 wrote to memory of 2628	2088	Soundcrd.exe	35
PID 2088 wrote to memory of 2628	2088	Soundcrd.exe	35
PID 2088 wrote to memory of 2628	2088	Soundcrd.exe	35
PID 2088 wrote to memory of 2628	2088	Soundcrd.exe	35
PID 2088 wrote to memory of 2628	2088	Soundcrd.exe	35
PID 2088 wrote to memory of 2628	2088	Soundcrd.exe	35
PID 2088 wrote to memory of 2628	2088	Soundcrd.exe	35
PID 2088 wrote to memory of 2628	2088	Soundcrd.exe	35

C:\Users\Admin\AppData\Local\Temp\df7b910bbc8fdb3e6f99037236ac9c84b42c42639ccf9c63939a79b6457b6185N.exe
"C:\Users\Admin\AppData\Local\Temp\df7b910bbc8fdb3e6f99037236ac9c84b42c42639ccf9c63939a79b6457b6185N.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1724
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\cwjZh.bat" "
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3052
- - 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:2328
- 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:2088
- - 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:2764
- - 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:2628

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\cwjZh.bat

Filesize
139B

MD5
173bcce4810d4901872d0ef4f0bfea4e

SHA1
561b03fdfe68b6419fddf57f32e1aab9a6126a2f

SHA256
10ea37eceabbe80fe9814280b66b957636951dbeeed18a9b4d50a1d24a6f1d1d

SHA512
2401e0a5e3f7bf590a0767449da2249d09717e8c1cb71a7475e81d9615580001cfc38705cd1a5b4edc33f7df043bf195e28e4a5442a32bc879dffc6473bd545e

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

Filesize
574KB

MD5
c8d9046cd83b2c69c007f9235186c053

SHA1
2084ec6a7942cebb656aa55b1cf1775f8fa3ec56

SHA256
ec19c2264b7b7afb696b5548efc03b0cbf8283d4a6f4e12e6bb28e7ff84365d3

SHA512
a2c0fb03d5c95040547fbc62f57a54497840e7b15fb0513ee4bddaa239f82499368f747d6f182c5613fa09281554d86daee2b9ee7b245f0b55823b5a3fbb0a0d

Download Submit
memory/1724-44-0x0000000003A50000-0x0000000003E3A000-memory.dmp

Filesize
3.9MB

Download
memory/1724-42-0x0000000003A50000-0x0000000003E3A000-memory.dmp

Filesize
3.9MB

Download
memory/1724-43-0x0000000003A50000-0x0000000003E3A000-memory.dmp

Filesize
3.9MB

Download
memory/1724-48-0x0000000000400000-0x00000000007EA000-memory.dmp

Filesize
3.9MB

Download
memory/1724-0-0x0000000000400000-0x00000000007EA000-memory.dmp

Filesize
3.9MB

Download
memory/2088-71-0x0000000000400000-0x00000000007EA000-memory.dmp

Filesize
3.9MB

Download
memory/2088-46-0x0000000000400000-0x00000000007EA000-memory.dmp

Filesize
3.9MB

Download
memory/2088-53-0x0000000002C10000-0x0000000002FFA000-memory.dmp

Filesize
3.9MB

Download
memory/2628-68-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2628-62-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2628-74-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2628-67-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2764-61-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2764-54-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2764-64-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2764-63-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2764-59-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2764-56-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2764-60-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2764-57-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2764-72-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2764-58-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2764-77-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2764-81-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2764-85-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2764-89-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2764-93-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download