darkcomet | 9453b720fd014658a07748730b6376835e897d30a53b4be5297331a0e212e147

Analysis

max time kernel
37s
max time network
43s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
05-12-2022 12:10

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General

Target

9453b720fd014658a07748730b6376835e897d30a53b4be5297331a0e212e147.exe
Size

999KB
MD5

2e2db5e73ab5e187b4ed49f0382b8b91
SHA1

890531ff8a5c492a7624854dc8c124e6cf9d38ca
SHA256

9453b720fd014658a07748730b6376835e897d30a53b4be5297331a0e212e147
SHA512

3ba7f26bc8f5706012301fc14f79803c0e6987d2d81680fa959fda1dcbfa060a2fee2e61fd9729ba581f08d26c484eb521a69a185c674b7dcdf7c4c55102f3bb
SSDEEP

12288:M6+GEHHrs3wo5Y/FtqyNzN/0gAhqNOAk55L3KFNqxLenk:M6NEHHrs36FN/0gpNOAkAO0k

Score

10^/10

darkcomet persistence rat trojan

Malware Config

Signatures

Darkcomet
DarkComet is a remote access trojan (RAT) developed by Jean-Pierre Lesueur.
trojan rat darkcomet

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Windows\\system32\\Service\\svhost.exe"	wmpnetk.exe

Executes dropped EXE 2 IoCs

pid	Process
1984	wmpnetk.exe
828	svhost.exe

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	wmpnetk.exe

Loads dropped DLL 2 IoCs

pid	Process
784	9453b720fd014658a07748730b6376835e897d30a53b4be5297331a0e212e147.exe
1984	wmpnetk.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run	wmpnetk.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\svhost = "C:\\Windows\\system32\\Service\\svhost.exe"	wmpnetk.exe

Drops file in System32 directory 3 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\Service\svhost.exe	wmpnetk.exe
File opened for modification	C:\Windows\SysWOW64\Service\svhost.exe	wmpnetk.exe
File opened for modification	C:\Windows\SysWOW64\Service\	wmpnetk.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 784 set thread context of 1984	784	9453b720fd014658a07748730b6376835e897d30a53b4be5297331a0e212e147.exe	26
PID 1984 set thread context of 2000	1984	wmpnetk.exe	27

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

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	wmpnetk.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	wmpnetk.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	wmpnetk.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	wmpnetk.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	wmpnetk.exe

Suspicious use of AdjustPrivilegeToken 23 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	1984	wmpnetk.exe
Token: SeSecurityPrivilege	1984	wmpnetk.exe
Token: SeTakeOwnershipPrivilege	1984	wmpnetk.exe
Token: SeLoadDriverPrivilege	1984	wmpnetk.exe
Token: SeSystemProfilePrivilege	1984	wmpnetk.exe
Token: SeSystemtimePrivilege	1984	wmpnetk.exe
Token: SeProfSingleProcessPrivilege	1984	wmpnetk.exe
Token: SeIncBasePriorityPrivilege	1984	wmpnetk.exe
Token: SeCreatePagefilePrivilege	1984	wmpnetk.exe
Token: SeBackupPrivilege	1984	wmpnetk.exe
Token: SeRestorePrivilege	1984	wmpnetk.exe
Token: SeShutdownPrivilege	1984	wmpnetk.exe
Token: SeDebugPrivilege	1984	wmpnetk.exe
Token: SeSystemEnvironmentPrivilege	1984	wmpnetk.exe
Token: SeChangeNotifyPrivilege	1984	wmpnetk.exe
Token: SeRemoteShutdownPrivilege	1984	wmpnetk.exe
Token: SeUndockPrivilege	1984	wmpnetk.exe
Token: SeManageVolumePrivilege	1984	wmpnetk.exe
Token: SeImpersonatePrivilege	1984	wmpnetk.exe
Token: SeCreateGlobalPrivilege	1984	wmpnetk.exe
Token: 33	1984	wmpnetk.exe
Token: 34	1984	wmpnetk.exe
Token: 35	1984	wmpnetk.exe

Suspicious use of WriteProcessMemory 29 IoCs

description	pid	Process	procid_target
PID 784 wrote to memory of 1984	784	9453b720fd014658a07748730b6376835e897d30a53b4be5297331a0e212e147.exe	26
PID 784 wrote to memory of 1984	784	9453b720fd014658a07748730b6376835e897d30a53b4be5297331a0e212e147.exe	26
PID 784 wrote to memory of 1984	784	9453b720fd014658a07748730b6376835e897d30a53b4be5297331a0e212e147.exe	26
PID 784 wrote to memory of 1984	784	9453b720fd014658a07748730b6376835e897d30a53b4be5297331a0e212e147.exe	26
PID 784 wrote to memory of 1984	784	9453b720fd014658a07748730b6376835e897d30a53b4be5297331a0e212e147.exe	26
PID 784 wrote to memory of 1984	784	9453b720fd014658a07748730b6376835e897d30a53b4be5297331a0e212e147.exe	26
PID 784 wrote to memory of 1984	784	9453b720fd014658a07748730b6376835e897d30a53b4be5297331a0e212e147.exe	26
PID 784 wrote to memory of 1984	784	9453b720fd014658a07748730b6376835e897d30a53b4be5297331a0e212e147.exe	26
PID 784 wrote to memory of 1984	784	9453b720fd014658a07748730b6376835e897d30a53b4be5297331a0e212e147.exe	26
PID 784 wrote to memory of 1984	784	9453b720fd014658a07748730b6376835e897d30a53b4be5297331a0e212e147.exe	26
PID 784 wrote to memory of 1984	784	9453b720fd014658a07748730b6376835e897d30a53b4be5297331a0e212e147.exe	26
PID 784 wrote to memory of 1984	784	9453b720fd014658a07748730b6376835e897d30a53b4be5297331a0e212e147.exe	26
PID 784 wrote to memory of 1984	784	9453b720fd014658a07748730b6376835e897d30a53b4be5297331a0e212e147.exe	26
PID 784 wrote to memory of 1984	784	9453b720fd014658a07748730b6376835e897d30a53b4be5297331a0e212e147.exe	26
PID 784 wrote to memory of 1984	784	9453b720fd014658a07748730b6376835e897d30a53b4be5297331a0e212e147.exe	26
PID 784 wrote to memory of 1984	784	9453b720fd014658a07748730b6376835e897d30a53b4be5297331a0e212e147.exe	26
PID 784 wrote to memory of 1984	784	9453b720fd014658a07748730b6376835e897d30a53b4be5297331a0e212e147.exe	26
PID 784 wrote to memory of 1984	784	9453b720fd014658a07748730b6376835e897d30a53b4be5297331a0e212e147.exe	26
PID 784 wrote to memory of 1984	784	9453b720fd014658a07748730b6376835e897d30a53b4be5297331a0e212e147.exe	26
PID 1984 wrote to memory of 2000	1984	wmpnetk.exe	27
PID 1984 wrote to memory of 2000	1984	wmpnetk.exe	27
PID 1984 wrote to memory of 2000	1984	wmpnetk.exe	27
PID 1984 wrote to memory of 2000	1984	wmpnetk.exe	27
PID 1984 wrote to memory of 2000	1984	wmpnetk.exe	27
PID 1984 wrote to memory of 2000	1984	wmpnetk.exe	27
PID 1984 wrote to memory of 828	1984	wmpnetk.exe	29
PID 1984 wrote to memory of 828	1984	wmpnetk.exe	29
PID 1984 wrote to memory of 828	1984	wmpnetk.exe	29
PID 1984 wrote to memory of 828	1984	wmpnetk.exe	29

C:\Users\Admin\AppData\Local\Temp\9453b720fd014658a07748730b6376835e897d30a53b4be5297331a0e212e147.exe
"C:\Users\Admin\AppData\Local\Temp\9453b720fd014658a07748730b6376835e897d30a53b4be5297331a0e212e147.exe"
1⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:784
- C:\Users\Admin\AppData\Local\Temp\wmpnetk.exe
  C:\Users\Admin\AppData\Local\Temp\wmpnetk.exe
  2⤵
  - Modifies WinLogon for persistence
  - Executes dropped EXE
  - Checks BIOS information in registry
  - Loads dropped DLL
  - Adds Run key to start application
  - Drops file in System32 directory
  - Suspicious use of SetThreadContext
  - Checks processor information in registry
  - Enumerates system info in registry
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1984
- - C:\Windows\SysWOW64\explorer.exe
    "C:\Windows\SysWOW64\explorer.exe"
    3⤵
    PID:2000
- - C:\Windows\SysWOW64\Service\svhost.exe
    "C:\Windows\system32\Service\svhost.exe"
    3⤵
    - Executes dropped EXE
    PID:828

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Winlogon Helper DLL

T1004

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\wmpnetk.exe

Filesize
1.1MB

MD5
34aa912defa18c2c129f1e09d75c1d7e

SHA1
9c3046324657505a30ecd9b1fdb46c05bde7d470

SHA256
6df94b7fa33f1b87142adc39b3db0613fc520d9e7a5fd6a5301dd7f51f8d0386

SHA512
d1ea9368f5d7166180612fd763c87afb647d088498887961f5e7fb0a10f4a808bd5928e8a3666d70ff794093c51ecca8816f75dd47652fd4eb23dce7f9aa1f98

Download Submit
C:\Users\Admin\AppData\Local\Temp\wmpnetk.exe

Filesize
1.1MB

MD5
34aa912defa18c2c129f1e09d75c1d7e

SHA1
9c3046324657505a30ecd9b1fdb46c05bde7d470

SHA256
6df94b7fa33f1b87142adc39b3db0613fc520d9e7a5fd6a5301dd7f51f8d0386

SHA512
d1ea9368f5d7166180612fd763c87afb647d088498887961f5e7fb0a10f4a808bd5928e8a3666d70ff794093c51ecca8816f75dd47652fd4eb23dce7f9aa1f98

Download Submit
C:\Windows\SysWOW64\Service\svhost.exe

Filesize
1.1MB

MD5
34aa912defa18c2c129f1e09d75c1d7e

SHA1
9c3046324657505a30ecd9b1fdb46c05bde7d470

SHA256
6df94b7fa33f1b87142adc39b3db0613fc520d9e7a5fd6a5301dd7f51f8d0386

SHA512
d1ea9368f5d7166180612fd763c87afb647d088498887961f5e7fb0a10f4a808bd5928e8a3666d70ff794093c51ecca8816f75dd47652fd4eb23dce7f9aa1f98

Download Submit
C:\Windows\SysWOW64\Service\svhost.exe

Filesize
1.1MB

MD5
34aa912defa18c2c129f1e09d75c1d7e

SHA1
9c3046324657505a30ecd9b1fdb46c05bde7d470

SHA256
6df94b7fa33f1b87142adc39b3db0613fc520d9e7a5fd6a5301dd7f51f8d0386

SHA512
d1ea9368f5d7166180612fd763c87afb647d088498887961f5e7fb0a10f4a808bd5928e8a3666d70ff794093c51ecca8816f75dd47652fd4eb23dce7f9aa1f98

Download Submit
\Users\Admin\AppData\Local\Temp\wmpnetk.exe

Filesize
1.1MB

MD5
34aa912defa18c2c129f1e09d75c1d7e

SHA1
9c3046324657505a30ecd9b1fdb46c05bde7d470

SHA256
6df94b7fa33f1b87142adc39b3db0613fc520d9e7a5fd6a5301dd7f51f8d0386

SHA512
d1ea9368f5d7166180612fd763c87afb647d088498887961f5e7fb0a10f4a808bd5928e8a3666d70ff794093c51ecca8816f75dd47652fd4eb23dce7f9aa1f98

Download Submit
\Windows\SysWOW64\Service\svhost.exe

Filesize
1.1MB

MD5
34aa912defa18c2c129f1e09d75c1d7e

SHA1
9c3046324657505a30ecd9b1fdb46c05bde7d470

SHA256
6df94b7fa33f1b87142adc39b3db0613fc520d9e7a5fd6a5301dd7f51f8d0386

SHA512
d1ea9368f5d7166180612fd763c87afb647d088498887961f5e7fb0a10f4a808bd5928e8a3666d70ff794093c51ecca8816f75dd47652fd4eb23dce7f9aa1f98

Download Submit
memory/784-55-0x0000000074200000-0x00000000747AB000-memory.dmp

Filesize
5.7MB

Download
memory/784-62-0x0000000074200000-0x00000000747AB000-memory.dmp

Filesize
5.7MB

Download
memory/784-54-0x0000000075FC1000-0x0000000075FC3000-memory.dmp

Filesize
8KB

Download
memory/1984-63-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1984-60-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1984-57-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2000-67-0x0000000000400000-0x000000000051E000-memory.dmp

Filesize
1.1MB

Download
memory/2000-65-0x0000000000400000-0x000000000051E000-memory.dmp

Filesize
1.1MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads