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

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

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

70852bfbf56fbe23e90a0d4893650807505cbcefc5476632e94895279d897420N.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	70852bfbf56fbe23e90a0d4893650807505cbcefc5476632e94895279d897420N.exe

Executes dropped EXE 3 IoCs

Processes:

Soundcrd.exeSoundcrd.exeSoundcrd.exe

pid process

2844 Soundcrd.exe
5032 Soundcrd.exe
2000 Soundcrd.exe

pid	process
2844	Soundcrd.exe
5032	Soundcrd.exe
2000	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-1-5-21-3756129449-3121373848-4276368241-1000\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 2844 set thread context of 5032	2844	Soundcrd.exe	Soundcrd.exe
PID 2844 set thread context of 2000	2844	Soundcrd.exe	Soundcrd.exe

UPX packed file 18 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/5032-33-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/5032-36-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/2000-37-0x0000000000400000-0x0000000000409000-memory.dmp	upx
behavioral2/memory/2000-42-0x0000000000400000-0x0000000000409000-memory.dmp	upx
behavioral2/memory/2000-41-0x0000000000400000-0x0000000000409000-memory.dmp	upx
behavioral2/memory/5032-38-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/5032-48-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/5032-46-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/5032-49-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/5032-51-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/5032-50-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/5032-52-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/2000-53-0x0000000000400000-0x0000000000409000-memory.dmp	upx
behavioral2/memory/5032-58-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/5032-62-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/5032-66-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/5032-70-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/5032-74-0x0000000000400000-0x00000000004B5000-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:

70852bfbf56fbe23e90a0d4893650807505cbcefc5476632e94895279d897420N.execmd.exereg.exeSoundcrd.exeSoundcrd.exeSoundcrd.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	70852bfbf56fbe23e90a0d4893650807505cbcefc5476632e94895279d897420N.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

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

Suspicious use of AdjustPrivilegeToken 25 IoCs

Processes:

Soundcrd.exeSoundcrd.exe

description	pid	process
Token: SeDebugPrivilege	2000	Soundcrd.exe
Token: SeIncreaseQuotaPrivilege	5032	Soundcrd.exe
Token: SeSecurityPrivilege	5032	Soundcrd.exe
Token: SeTakeOwnershipPrivilege	5032	Soundcrd.exe
Token: SeLoadDriverPrivilege	5032	Soundcrd.exe
Token: SeSystemProfilePrivilege	5032	Soundcrd.exe
Token: SeSystemtimePrivilege	5032	Soundcrd.exe
Token: SeProfSingleProcessPrivilege	5032	Soundcrd.exe
Token: SeIncBasePriorityPrivilege	5032	Soundcrd.exe
Token: SeCreatePagefilePrivilege	5032	Soundcrd.exe
Token: SeBackupPrivilege	5032	Soundcrd.exe
Token: SeRestorePrivilege	5032	Soundcrd.exe
Token: SeShutdownPrivilege	5032	Soundcrd.exe
Token: SeDebugPrivilege	5032	Soundcrd.exe
Token: SeSystemEnvironmentPrivilege	5032	Soundcrd.exe
Token: SeChangeNotifyPrivilege	5032	Soundcrd.exe
Token: SeRemoteShutdownPrivilege	5032	Soundcrd.exe
Token: SeUndockPrivilege	5032	Soundcrd.exe
Token: SeManageVolumePrivilege	5032	Soundcrd.exe
Token: SeImpersonatePrivilege	5032	Soundcrd.exe
Token: SeCreateGlobalPrivilege	5032	Soundcrd.exe
Token: 33	5032	Soundcrd.exe
Token: 34	5032	Soundcrd.exe
Token: 35	5032	Soundcrd.exe
Token: 36	5032	Soundcrd.exe

Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

70852bfbf56fbe23e90a0d4893650807505cbcefc5476632e94895279d897420N.exeSoundcrd.exeSoundcrd.exe

pid process

4856 70852bfbf56fbe23e90a0d4893650807505cbcefc5476632e94895279d897420N.exe
2844 Soundcrd.exe
2000 Soundcrd.exe

pid	process
4856	70852bfbf56fbe23e90a0d4893650807505cbcefc5476632e94895279d897420N.exe
2844	Soundcrd.exe
2000	Soundcrd.exe

Suspicious use of WriteProcessMemory 25 IoCs

Processes:

70852bfbf56fbe23e90a0d4893650807505cbcefc5476632e94895279d897420N.execmd.exeSoundcrd.exe

description	pid	process	target process
PID 4856 wrote to memory of 4088	4856	70852bfbf56fbe23e90a0d4893650807505cbcefc5476632e94895279d897420N.exe	cmd.exe
PID 4856 wrote to memory of 4088	4856	70852bfbf56fbe23e90a0d4893650807505cbcefc5476632e94895279d897420N.exe	cmd.exe
PID 4856 wrote to memory of 4088	4856	70852bfbf56fbe23e90a0d4893650807505cbcefc5476632e94895279d897420N.exe	cmd.exe
PID 4088 wrote to memory of 4960	4088	cmd.exe	reg.exe
PID 4088 wrote to memory of 4960	4088	cmd.exe	reg.exe
PID 4088 wrote to memory of 4960	4088	cmd.exe	reg.exe
PID 4856 wrote to memory of 2844	4856	70852bfbf56fbe23e90a0d4893650807505cbcefc5476632e94895279d897420N.exe	Soundcrd.exe
PID 4856 wrote to memory of 2844	4856	70852bfbf56fbe23e90a0d4893650807505cbcefc5476632e94895279d897420N.exe	Soundcrd.exe
PID 4856 wrote to memory of 2844	4856	70852bfbf56fbe23e90a0d4893650807505cbcefc5476632e94895279d897420N.exe	Soundcrd.exe
PID 2844 wrote to memory of 5032	2844	Soundcrd.exe	Soundcrd.exe
PID 2844 wrote to memory of 5032	2844	Soundcrd.exe	Soundcrd.exe
PID 2844 wrote to memory of 5032	2844	Soundcrd.exe	Soundcrd.exe
PID 2844 wrote to memory of 5032	2844	Soundcrd.exe	Soundcrd.exe
PID 2844 wrote to memory of 5032	2844	Soundcrd.exe	Soundcrd.exe
PID 2844 wrote to memory of 5032	2844	Soundcrd.exe	Soundcrd.exe
PID 2844 wrote to memory of 5032	2844	Soundcrd.exe	Soundcrd.exe
PID 2844 wrote to memory of 5032	2844	Soundcrd.exe	Soundcrd.exe
PID 2844 wrote to memory of 2000	2844	Soundcrd.exe	Soundcrd.exe
PID 2844 wrote to memory of 2000	2844	Soundcrd.exe	Soundcrd.exe
PID 2844 wrote to memory of 2000	2844	Soundcrd.exe	Soundcrd.exe
PID 2844 wrote to memory of 2000	2844	Soundcrd.exe	Soundcrd.exe
PID 2844 wrote to memory of 2000	2844	Soundcrd.exe	Soundcrd.exe
PID 2844 wrote to memory of 2000	2844	Soundcrd.exe	Soundcrd.exe
PID 2844 wrote to memory of 2000	2844	Soundcrd.exe	Soundcrd.exe
PID 2844 wrote to memory of 2000	2844	Soundcrd.exe	Soundcrd.exe

C:\Users\Admin\AppData\Local\Temp\70852bfbf56fbe23e90a0d4893650807505cbcefc5476632e94895279d897420N.exe
"C:\Users\Admin\AppData\Local\Temp\70852bfbf56fbe23e90a0d4893650807505cbcefc5476632e94895279d897420N.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4856
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\MkdsQ.bat" "
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4088
- - 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:4960
- 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:2844
- - 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:5032
- - 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:2000

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

4

T1012

System Information Discovery

5

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\MkdsQ.txt

Filesize
139B

MD5
173bcce4810d4901872d0ef4f0bfea4e

SHA1
561b03fdfe68b6419fddf57f32e1aab9a6126a2f

SHA256
10ea37eceabbe80fe9814280b66b957636951dbeeed18a9b4d50a1d24a6f1d1d

SHA512
2401e0a5e3f7bf590a0767449da2249d09717e8c1cb71a7475e81d9615580001cfc38705cd1a5b4edc33f7df043bf195e28e4a5442a32bc879dffc6473bd545e

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

Filesize
574KB

MD5
df0a64d6409ffe1fc8d749dd4bff5e5b

SHA1
62f26e6b6333326eca42e9b7346666da603d9f68

SHA256
c8b2352a3763ed49d7e71096c152c1527c2581cf1dca8cdc48f18b3c5f849379

SHA512
d39705c75ec6485457a758102d7a61ac8851e70fee3972328db849be09a4f634cbfe79950e0d8033e971803b342ffa41bb9d5c116da21fa49dac58da1c08fa74

Download Submit
memory/2000-53-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2000-37-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2000-42-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2000-41-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2844-47-0x0000000000400000-0x00000000007EA000-memory.dmp

Filesize
3.9MB

Download
memory/2844-28-0x0000000000400000-0x00000000007EA000-memory.dmp

Filesize
3.9MB

Download
memory/4856-30-0x0000000000400000-0x00000000007EA000-memory.dmp

Filesize
3.9MB

Download
memory/4856-0-0x0000000000400000-0x00000000007EA000-memory.dmp

Filesize
3.9MB

Download
memory/5032-36-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/5032-52-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/5032-48-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/5032-46-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/5032-49-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/5032-51-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/5032-50-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/5032-38-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/5032-33-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/5032-58-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/5032-62-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/5032-66-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/5032-70-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/5032-74-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads