darkcomet | 0ab99bc90b4d5cfcdd8da560c7daa3768b21b3e63a53136a871155d6681409a8

Analysis

max time kernel
119s
max time network
120s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
07-11-2024 22:02

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General

Target

0ab99bc90b4d5cfcdd8da560c7daa3768b21b3e63a53136a871155d6681409a8N.exe
Size

3.9MB
MD5

9ce228d0cd2fc274eef4088019ed31b0
SHA1

9e48e4941d040597b74863223b880fcb24fc66a2
SHA256

0ab99bc90b4d5cfcdd8da560c7daa3768b21b3e63a53136a871155d6681409a8
SHA512

27ec457a308e0f801f823f60bc01206b5abf38971f50a6a97d6cce1a35b771e16acf27a89369449338ab343d48d5c109aa9ff83195228631167a444d40a8f57d
SSDEEP

98304:IlX3KMj7yBNUVPhd5G0Z5DxdM3hZpmBAlB6D4tyX6kuT4IkQApCgvms0Cv05J5Cz:IlX3KMj7yBNUVPhd5G0Z5DxdM3hZpmBz

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
2668	Soundcrd.exe
560	Soundcrd.exe
1800	Soundcrd.exe

Loads dropped DLL 7 IoCs

Processes:

0ab99bc90b4d5cfcdd8da560c7daa3768b21b3e63a53136a871155d6681409a8N.exeSoundcrd.exe

pid	Process
2796	0ab99bc90b4d5cfcdd8da560c7daa3768b21b3e63a53136a871155d6681409a8N.exe
2796	0ab99bc90b4d5cfcdd8da560c7daa3768b21b3e63a53136a871155d6681409a8N.exe
2796	0ab99bc90b4d5cfcdd8da560c7daa3768b21b3e63a53136a871155d6681409a8N.exe
2796	0ab99bc90b4d5cfcdd8da560c7daa3768b21b3e63a53136a871155d6681409a8N.exe
2796	0ab99bc90b4d5cfcdd8da560c7daa3768b21b3e63a53136a871155d6681409a8N.exe
2668	Soundcrd.exe
2668	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-1-5-21-1846800975-3917212583-2893086201-1000\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 2668 set thread context of 560	2668	Soundcrd.exe	35
PID 2668 set thread context of 1800	2668	Soundcrd.exe	36

UPX packed file 20 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/1800-66-0x0000000000400000-0x0000000000409000-memory.dmp	upx
behavioral1/memory/560-53-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/560-65-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/1800-61-0x0000000000400000-0x0000000000409000-memory.dmp	upx
behavioral1/memory/1800-60-0x0000000000400000-0x0000000000409000-memory.dmp	upx
behavioral1/memory/560-56-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/560-67-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/1800-57-0x0000000000400000-0x0000000000409000-memory.dmp	upx
behavioral1/memory/560-70-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/560-72-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/560-71-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/560-69-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/560-68-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/560-73-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/1800-74-0x0000000000400000-0x0000000000409000-memory.dmp	upx
behavioral1/memory/560-79-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/560-83-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/560-87-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/560-91-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/560-95-0x0000000000400000-0x00000000004B5000-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:

cmd.exereg.exeSoundcrd.exeSoundcrd.exeSoundcrd.exe0ab99bc90b4d5cfcdd8da560c7daa3768b21b3e63a53136a871155d6681409a8N.exe

description	ioc	Process
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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	0ab99bc90b4d5cfcdd8da560c7daa3768b21b3e63a53136a871155d6681409a8N.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	1800	Soundcrd.exe
Token: SeIncreaseQuotaPrivilege	560	Soundcrd.exe
Token: SeSecurityPrivilege	560	Soundcrd.exe
Token: SeTakeOwnershipPrivilege	560	Soundcrd.exe
Token: SeLoadDriverPrivilege	560	Soundcrd.exe
Token: SeSystemProfilePrivilege	560	Soundcrd.exe
Token: SeSystemtimePrivilege	560	Soundcrd.exe
Token: SeProfSingleProcessPrivilege	560	Soundcrd.exe
Token: SeIncBasePriorityPrivilege	560	Soundcrd.exe
Token: SeCreatePagefilePrivilege	560	Soundcrd.exe
Token: SeBackupPrivilege	560	Soundcrd.exe
Token: SeRestorePrivilege	560	Soundcrd.exe
Token: SeShutdownPrivilege	560	Soundcrd.exe
Token: SeDebugPrivilege	560	Soundcrd.exe
Token: SeSystemEnvironmentPrivilege	560	Soundcrd.exe
Token: SeChangeNotifyPrivilege	560	Soundcrd.exe
Token: SeRemoteShutdownPrivilege	560	Soundcrd.exe
Token: SeUndockPrivilege	560	Soundcrd.exe
Token: SeManageVolumePrivilege	560	Soundcrd.exe
Token: SeImpersonatePrivilege	560	Soundcrd.exe
Token: SeCreateGlobalPrivilege	560	Soundcrd.exe
Token: 33	560	Soundcrd.exe
Token: 34	560	Soundcrd.exe
Token: 35	560	Soundcrd.exe

Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

0ab99bc90b4d5cfcdd8da560c7daa3768b21b3e63a53136a871155d6681409a8N.exeSoundcrd.exeSoundcrd.exe

pid	Process
2796	0ab99bc90b4d5cfcdd8da560c7daa3768b21b3e63a53136a871155d6681409a8N.exe
2668	Soundcrd.exe
1800	Soundcrd.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

0ab99bc90b4d5cfcdd8da560c7daa3768b21b3e63a53136a871155d6681409a8N.execmd.exeSoundcrd.exe

description	pid	Process	procid_target
PID 2796 wrote to memory of 2672	2796	0ab99bc90b4d5cfcdd8da560c7daa3768b21b3e63a53136a871155d6681409a8N.exe	31
PID 2796 wrote to memory of 2672	2796	0ab99bc90b4d5cfcdd8da560c7daa3768b21b3e63a53136a871155d6681409a8N.exe	31
PID 2796 wrote to memory of 2672	2796	0ab99bc90b4d5cfcdd8da560c7daa3768b21b3e63a53136a871155d6681409a8N.exe	31
PID 2796 wrote to memory of 2672	2796	0ab99bc90b4d5cfcdd8da560c7daa3768b21b3e63a53136a871155d6681409a8N.exe	31
PID 2672 wrote to memory of 2580	2672	cmd.exe	33
PID 2672 wrote to memory of 2580	2672	cmd.exe	33
PID 2672 wrote to memory of 2580	2672	cmd.exe	33
PID 2672 wrote to memory of 2580	2672	cmd.exe	33
PID 2796 wrote to memory of 2668	2796	0ab99bc90b4d5cfcdd8da560c7daa3768b21b3e63a53136a871155d6681409a8N.exe	34
PID 2796 wrote to memory of 2668	2796	0ab99bc90b4d5cfcdd8da560c7daa3768b21b3e63a53136a871155d6681409a8N.exe	34
PID 2796 wrote to memory of 2668	2796	0ab99bc90b4d5cfcdd8da560c7daa3768b21b3e63a53136a871155d6681409a8N.exe	34
PID 2796 wrote to memory of 2668	2796	0ab99bc90b4d5cfcdd8da560c7daa3768b21b3e63a53136a871155d6681409a8N.exe	34
PID 2668 wrote to memory of 560	2668	Soundcrd.exe	35
PID 2668 wrote to memory of 560	2668	Soundcrd.exe	35
PID 2668 wrote to memory of 560	2668	Soundcrd.exe	35
PID 2668 wrote to memory of 560	2668	Soundcrd.exe	35
PID 2668 wrote to memory of 560	2668	Soundcrd.exe	35
PID 2668 wrote to memory of 560	2668	Soundcrd.exe	35
PID 2668 wrote to memory of 560	2668	Soundcrd.exe	35
PID 2668 wrote to memory of 560	2668	Soundcrd.exe	35
PID 2668 wrote to memory of 560	2668	Soundcrd.exe	35
PID 2668 wrote to memory of 1800	2668	Soundcrd.exe	36
PID 2668 wrote to memory of 1800	2668	Soundcrd.exe	36
PID 2668 wrote to memory of 1800	2668	Soundcrd.exe	36
PID 2668 wrote to memory of 1800	2668	Soundcrd.exe	36
PID 2668 wrote to memory of 1800	2668	Soundcrd.exe	36
PID 2668 wrote to memory of 1800	2668	Soundcrd.exe	36
PID 2668 wrote to memory of 1800	2668	Soundcrd.exe	36
PID 2668 wrote to memory of 1800	2668	Soundcrd.exe	36
PID 2668 wrote to memory of 1800	2668	Soundcrd.exe	36

C:\Users\Admin\AppData\Local\Temp\0ab99bc90b4d5cfcdd8da560c7daa3768b21b3e63a53136a871155d6681409a8N.exe
"C:\Users\Admin\AppData\Local\Temp\0ab99bc90b4d5cfcdd8da560c7daa3768b21b3e63a53136a871155d6681409a8N.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2796
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\GWsBQ.bat" "
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2672
- - 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:2580
- 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:2668
- - 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:560
- - 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:1800

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\GWsBQ.bat

Filesize
139B

MD5
173bcce4810d4901872d0ef4f0bfea4e

SHA1
561b03fdfe68b6419fddf57f32e1aab9a6126a2f

SHA256
10ea37eceabbe80fe9814280b66b957636951dbeeed18a9b4d50a1d24a6f1d1d

SHA512
2401e0a5e3f7bf590a0767449da2249d09717e8c1cb71a7475e81d9615580001cfc38705cd1a5b4edc33f7df043bf195e28e4a5442a32bc879dffc6473bd545e

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

Filesize
3.9MB

MD5
2999434033552009aa0ab4d4e966f273

SHA1
11db47864ed2e2a805254e9b4bbfb80c587fad80

SHA256
823ed2283802d7d92db399970097d5f599645ca3a86f92443561dcd50a664b63

SHA512
5c251408b5bdf67bdb96dcfaf0cca8872d190bc310c0a481174aaab9b7c55f06462fefcd9baa8f75953de20a3843a19651b5873ac576a548b736b7b7492068f3

Download Submit
memory/560-73-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/560-95-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/560-91-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/560-87-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/560-83-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/560-79-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/560-70-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/560-68-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/560-53-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/560-65-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/560-69-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/560-71-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/560-72-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/560-56-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/560-67-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/1800-60-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/1800-57-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/1800-61-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/1800-66-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/1800-74-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2668-62-0x0000000000400000-0x00000000007EB000-memory.dmp

Filesize
3.9MB

Download
memory/2668-48-0x0000000000400000-0x00000000007EB000-memory.dmp

Filesize
3.9MB

Download
memory/2796-2-0x0000000000400000-0x00000000007EB000-memory.dmp

Filesize
3.9MB

Download
memory/2796-43-0x0000000003870000-0x0000000003C5B000-memory.dmp

Filesize
3.9MB

Download
memory/2796-44-0x0000000003870000-0x0000000003C5B000-memory.dmp

Filesize
3.9MB

Download
memory/2796-46-0x0000000000400000-0x00000000007EB000-memory.dmp

Filesize
3.9MB

Download
memory/2796-47-0x0000000003870000-0x0000000003C5B000-memory.dmp

Filesize
3.9MB

Download
memory/2796-42-0x0000000003870000-0x0000000003C5B000-memory.dmp

Filesize
3.9MB

Download