darkcomet | 70852bfbf56fbe23e90a0d4893650807505cbcefc5476632e94895279d897420

General

Target

70852bfbf56fbe23e90a0d4893650807505cbcefc5476632e94895279d897420N.exe
Size

574KB
MD5

8a81cbc9a0354ea38a142f41b1aa93d0
SHA1

6c9b4e0dc1a296207418da5a493ffb30d0d6272d
SHA256

70852bfbf56fbe23e90a0d4893650807505cbcefc5476632e94895279d897420
SHA512

d324316722441e31be53c1a70d5869fc1d3df27e30eb26279ba8eb827e82226ad6737dee58c2d351c56cf95f09c07c4eb69c0162cf3b69b890d29a82f0d1c98f
SSDEEP

12288:zCyEHAWAdljmJqkC3xMX85FSR2f9A08NIX+Vjwd4G/3z1ET4m3Hdsub4:zFhWAfn22m0eD1GPz8Hdxk

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

2796 Soundcrd.exe
2820 Soundcrd.exe
2936 Soundcrd.exe

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

pid	process
2796	Soundcrd.exe
2820	Soundcrd.exe
2936	Soundcrd.exe

Loads dropped DLL 7 IoCs

Processes:

70852bfbf56fbe23e90a0d4893650807505cbcefc5476632e94895279d897420N.exeSoundcrd.exe

pid	process
3012	70852bfbf56fbe23e90a0d4893650807505cbcefc5476632e94895279d897420N.exe
3012	70852bfbf56fbe23e90a0d4893650807505cbcefc5476632e94895279d897420N.exe
3012	70852bfbf56fbe23e90a0d4893650807505cbcefc5476632e94895279d897420N.exe
3012	70852bfbf56fbe23e90a0d4893650807505cbcefc5476632e94895279d897420N.exe
3012	70852bfbf56fbe23e90a0d4893650807505cbcefc5476632e94895279d897420N.exe
2796	Soundcrd.exe
2796	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-1-5-21-2039016743-699959520-214465309-1000\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	target process
PID 2796 set thread context of 2820	2796	Soundcrd.exe	Soundcrd.exe
PID 2796 set thread context of 2936	2796	Soundcrd.exe	Soundcrd.exe

UPX packed file 18 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/2820-55-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2936-62-0x0000000000400000-0x0000000000409000-memory.dmp	upx
behavioral1/memory/2820-69-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2820-67-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2820-71-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2820-70-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2936-65-0x0000000000400000-0x0000000000409000-memory.dmp	upx
behavioral1/memory/2820-60-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2936-59-0x0000000000400000-0x0000000000409000-memory.dmp	upx
behavioral1/memory/2820-58-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2820-57-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2820-53-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2820-74-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2936-75-0x0000000000400000-0x0000000000409000-memory.dmp	upx
behavioral1/memory/2820-80-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2820-84-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2820-88-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2820-92-0x0000000000400000-0x00000000004B5000-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:

reg.exeSoundcrd.exeSoundcrd.exeSoundcrd.exe70852bfbf56fbe23e90a0d4893650807505cbcefc5476632e94895279d897420N.execmd.exe

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	70852bfbf56fbe23e90a0d4893650807505cbcefc5476632e94895279d897420N.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

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

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	2820	Soundcrd.exe
Token: SeSecurityPrivilege	2820	Soundcrd.exe
Token: SeTakeOwnershipPrivilege	2820	Soundcrd.exe
Token: SeLoadDriverPrivilege	2820	Soundcrd.exe
Token: SeSystemProfilePrivilege	2820	Soundcrd.exe
Token: SeSystemtimePrivilege	2820	Soundcrd.exe
Token: SeProfSingleProcessPrivilege	2820	Soundcrd.exe
Token: SeIncBasePriorityPrivilege	2820	Soundcrd.exe
Token: SeCreatePagefilePrivilege	2820	Soundcrd.exe
Token: SeBackupPrivilege	2820	Soundcrd.exe
Token: SeRestorePrivilege	2820	Soundcrd.exe
Token: SeShutdownPrivilege	2820	Soundcrd.exe
Token: SeDebugPrivilege	2820	Soundcrd.exe
Token: SeSystemEnvironmentPrivilege	2820	Soundcrd.exe
Token: SeChangeNotifyPrivilege	2820	Soundcrd.exe
Token: SeRemoteShutdownPrivilege	2820	Soundcrd.exe
Token: SeUndockPrivilege	2820	Soundcrd.exe
Token: SeManageVolumePrivilege	2820	Soundcrd.exe
Token: SeImpersonatePrivilege	2820	Soundcrd.exe
Token: SeCreateGlobalPrivilege	2820	Soundcrd.exe
Token: 33	2820	Soundcrd.exe
Token: 34	2820	Soundcrd.exe
Token: 35	2820	Soundcrd.exe
Token: SeDebugPrivilege	2936	Soundcrd.exe

Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

70852bfbf56fbe23e90a0d4893650807505cbcefc5476632e94895279d897420N.exeSoundcrd.exeSoundcrd.exe

pid process

3012 70852bfbf56fbe23e90a0d4893650807505cbcefc5476632e94895279d897420N.exe
2796 Soundcrd.exe
2936 Soundcrd.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

70852bfbf56fbe23e90a0d4893650807505cbcefc5476632e94895279d897420N.execmd.exeSoundcrd.exe

description	pid	process	target process
PID 3012 wrote to memory of 1280	3012	70852bfbf56fbe23e90a0d4893650807505cbcefc5476632e94895279d897420N.exe	cmd.exe
PID 3012 wrote to memory of 1280	3012	70852bfbf56fbe23e90a0d4893650807505cbcefc5476632e94895279d897420N.exe	cmd.exe
PID 3012 wrote to memory of 1280	3012	70852bfbf56fbe23e90a0d4893650807505cbcefc5476632e94895279d897420N.exe	cmd.exe
PID 3012 wrote to memory of 1280	3012	70852bfbf56fbe23e90a0d4893650807505cbcefc5476632e94895279d897420N.exe	cmd.exe
PID 1280 wrote to memory of 2876	1280	cmd.exe	reg.exe
PID 1280 wrote to memory of 2876	1280	cmd.exe	reg.exe
PID 1280 wrote to memory of 2876	1280	cmd.exe	reg.exe
PID 1280 wrote to memory of 2876	1280	cmd.exe	reg.exe
PID 3012 wrote to memory of 2796	3012	70852bfbf56fbe23e90a0d4893650807505cbcefc5476632e94895279d897420N.exe	Soundcrd.exe
PID 3012 wrote to memory of 2796	3012	70852bfbf56fbe23e90a0d4893650807505cbcefc5476632e94895279d897420N.exe	Soundcrd.exe
PID 3012 wrote to memory of 2796	3012	70852bfbf56fbe23e90a0d4893650807505cbcefc5476632e94895279d897420N.exe	Soundcrd.exe
PID 3012 wrote to memory of 2796	3012	70852bfbf56fbe23e90a0d4893650807505cbcefc5476632e94895279d897420N.exe	Soundcrd.exe
PID 2796 wrote to memory of 2820	2796	Soundcrd.exe	Soundcrd.exe
PID 2796 wrote to memory of 2820	2796	Soundcrd.exe	Soundcrd.exe
PID 2796 wrote to memory of 2820	2796	Soundcrd.exe	Soundcrd.exe
PID 2796 wrote to memory of 2820	2796	Soundcrd.exe	Soundcrd.exe
PID 2796 wrote to memory of 2820	2796	Soundcrd.exe	Soundcrd.exe
PID 2796 wrote to memory of 2820	2796	Soundcrd.exe	Soundcrd.exe
PID 2796 wrote to memory of 2820	2796	Soundcrd.exe	Soundcrd.exe
PID 2796 wrote to memory of 2820	2796	Soundcrd.exe	Soundcrd.exe
PID 2796 wrote to memory of 2820	2796	Soundcrd.exe	Soundcrd.exe
PID 2796 wrote to memory of 2936	2796	Soundcrd.exe	Soundcrd.exe
PID 2796 wrote to memory of 2936	2796	Soundcrd.exe	Soundcrd.exe
PID 2796 wrote to memory of 2936	2796	Soundcrd.exe	Soundcrd.exe
PID 2796 wrote to memory of 2936	2796	Soundcrd.exe	Soundcrd.exe
PID 2796 wrote to memory of 2936	2796	Soundcrd.exe	Soundcrd.exe
PID 2796 wrote to memory of 2936	2796	Soundcrd.exe	Soundcrd.exe
PID 2796 wrote to memory of 2936	2796	Soundcrd.exe	Soundcrd.exe
PID 2796 wrote to memory of 2936	2796	Soundcrd.exe	Soundcrd.exe
PID 2796 wrote to memory of 2936	2796	Soundcrd.exe	Soundcrd.exe

C:\Users\Admin\AppData\Local\Temp\70852bfbf56fbe23e90a0d4893650807505cbcefc5476632e94895279d897420N.exe
"C:\Users\Admin\AppData\Local\Temp\70852bfbf56fbe23e90a0d4893650807505cbcefc5476632e94895279d897420N.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3012
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\VAycP.bat" "
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1280
- - 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:2876
- 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:2796
- - 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:2820
- - 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:2936

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

3

T1012

System Information Discovery

4

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
139B

MD5
173bcce4810d4901872d0ef4f0bfea4e

SHA1
561b03fdfe68b6419fddf57f32e1aab9a6126a2f

SHA256
10ea37eceabbe80fe9814280b66b957636951dbeeed18a9b4d50a1d24a6f1d1d

SHA512
2401e0a5e3f7bf590a0767449da2249d09717e8c1cb71a7475e81d9615580001cfc38705cd1a5b4edc33f7df043bf195e28e4a5442a32bc879dffc6473bd545e

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

Filesize
574KB

MD5
aa9193688353e85162b4b79a7c1f4b63

SHA1
cee102db16f5e8c08fbfcf4cd335b695391df184

SHA256
a447cafe9a926c7277f447b250cd0422b76be4e62ab49282d799cbd368f074f4

SHA512
2a2e58ab5b465be13ec859a5c224b062cc7e0606ec933dc675d59a19d6472b52dc1f1ff2f57762e798054f18af3d5d4ef364beb244556b55acade7936b4d0168

Download Submit
memory/2796-68-0x0000000000400000-0x00000000007EA000-memory.dmp

Filesize
3.9MB

Download
memory/2796-47-0x0000000000400000-0x00000000007EA000-memory.dmp

Filesize
3.9MB

Download
memory/2796-64-0x0000000002C60000-0x000000000304A000-memory.dmp

Filesize
3.9MB

Download
memory/2796-52-0x0000000002C60000-0x000000000304A000-memory.dmp

Filesize
3.9MB

Download
memory/2820-53-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2820-60-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2820-55-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2820-92-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2820-69-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2820-88-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2820-67-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2820-71-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2820-70-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2820-84-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2820-80-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2820-74-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2820-57-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2820-58-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2936-59-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2936-75-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2936-65-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2936-62-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/3012-2-0x0000000000400000-0x00000000007EA000-memory.dmp

Filesize
3.9MB

Download
memory/3012-44-0x0000000003950000-0x0000000003D3A000-memory.dmp

Filesize
3.9MB

Download
memory/3012-46-0x0000000003950000-0x0000000003D3A000-memory.dmp

Filesize
3.9MB

Download
memory/3012-45-0x0000000000400000-0x00000000007EA000-memory.dmp

Filesize
3.9MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads