darkcomet | 0c66476f182d6b7dc4c474faa3cc92964aa20439f7d4cb11454748f17e4bf397

Analysis

max time kernel
152s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
submitted
03/10/2022, 16:17

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General

Target

0c66476f182d6b7dc4c474faa3cc92964aa20439f7d4cb11454748f17e4bf397.exe
Size

495KB
MD5

6968e1184909ad3a6360048ba729dae8
SHA1

a7b56f89f53cfc4feb604ecd765b17492d808b4a
SHA256

0c66476f182d6b7dc4c474faa3cc92964aa20439f7d4cb11454748f17e4bf397
SHA512

27d4e7b25fdd3fa664a4cf4306b9ba61b5e384d7edb8c9708a6e772e965b91f565d7e76560dead77b40d3e2fd425be464b8f0d6223bf466b148319c7887e094f
SSDEEP

12288:YUcrY8driIQHG2D1axkPKdCSEa5aXQrsQ75lFKhIpzqt:LWY8BiIwG2BJzSEasXMlFKyYt

Score

10^/10

darkcomet evasion persistence rat trojan upx

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:\\Windupdt\\explorer.exe"	0c66476f182d6b7dc4c474faa3cc92964aa20439f7d4cb11454748f17e4bf397.exe

Executes dropped EXE 2 IoCs

pid	Process
3408	TRAVIANSPAMER.EXE
4788	explorer.exe

Sets file to hidden 1 TTPs 2 IoCs

Modifies file attributes to stop it showing in Explorer etc.

evasion

Hidden Files and Directories

T1158

pid	Process
680	attrib.exe
1868	attrib.exe

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4844-132-0x0000000000400000-0x00000000005CA000-memory.dmp	upx
behavioral2/files/0x0004000000022dcd-143.dat	upx
behavioral2/memory/4844-145-0x0000000000400000-0x00000000005CA000-memory.dmp	upx
behavioral2/files/0x0004000000022dcd-142.dat	upx
behavioral2/memory/4788-147-0x0000000000400000-0x00000000005CA000-memory.dmp	upx
behavioral2/memory/4788-149-0x0000000000400000-0x00000000005CA000-memory.dmp	upx

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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation	0c66476f182d6b7dc4c474faa3cc92964aa20439f7d4cb11454748f17e4bf397.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Windows Explorer = "C:\\Windupdt\\explorer.exe"	explorer.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Windows Explorer = "C:\\Windupdt\\explorer.exe"	0c66476f182d6b7dc4c474faa3cc92964aa20439f7d4cb11454748f17e4bf397.exe

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

System Information Discovery
T1082

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	0c66476f182d6b7dc4c474faa3cc92964aa20439f7d4cb11454748f17e4bf397.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1960	PING.EXE

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	4844	0c66476f182d6b7dc4c474faa3cc92964aa20439f7d4cb11454748f17e4bf397.exe
Token: SeSecurityPrivilege	4844	0c66476f182d6b7dc4c474faa3cc92964aa20439f7d4cb11454748f17e4bf397.exe
Token: SeTakeOwnershipPrivilege	4844	0c66476f182d6b7dc4c474faa3cc92964aa20439f7d4cb11454748f17e4bf397.exe
Token: SeLoadDriverPrivilege	4844	0c66476f182d6b7dc4c474faa3cc92964aa20439f7d4cb11454748f17e4bf397.exe
Token: SeSystemProfilePrivilege	4844	0c66476f182d6b7dc4c474faa3cc92964aa20439f7d4cb11454748f17e4bf397.exe
Token: SeSystemtimePrivilege	4844	0c66476f182d6b7dc4c474faa3cc92964aa20439f7d4cb11454748f17e4bf397.exe
Token: SeProfSingleProcessPrivilege	4844	0c66476f182d6b7dc4c474faa3cc92964aa20439f7d4cb11454748f17e4bf397.exe
Token: SeIncBasePriorityPrivilege	4844	0c66476f182d6b7dc4c474faa3cc92964aa20439f7d4cb11454748f17e4bf397.exe
Token: SeCreatePagefilePrivilege	4844	0c66476f182d6b7dc4c474faa3cc92964aa20439f7d4cb11454748f17e4bf397.exe
Token: SeBackupPrivilege	4844	0c66476f182d6b7dc4c474faa3cc92964aa20439f7d4cb11454748f17e4bf397.exe
Token: SeRestorePrivilege	4844	0c66476f182d6b7dc4c474faa3cc92964aa20439f7d4cb11454748f17e4bf397.exe
Token: SeShutdownPrivilege	4844	0c66476f182d6b7dc4c474faa3cc92964aa20439f7d4cb11454748f17e4bf397.exe
Token: SeDebugPrivilege	4844	0c66476f182d6b7dc4c474faa3cc92964aa20439f7d4cb11454748f17e4bf397.exe
Token: SeSystemEnvironmentPrivilege	4844	0c66476f182d6b7dc4c474faa3cc92964aa20439f7d4cb11454748f17e4bf397.exe
Token: SeChangeNotifyPrivilege	4844	0c66476f182d6b7dc4c474faa3cc92964aa20439f7d4cb11454748f17e4bf397.exe
Token: SeRemoteShutdownPrivilege	4844	0c66476f182d6b7dc4c474faa3cc92964aa20439f7d4cb11454748f17e4bf397.exe
Token: SeUndockPrivilege	4844	0c66476f182d6b7dc4c474faa3cc92964aa20439f7d4cb11454748f17e4bf397.exe
Token: SeManageVolumePrivilege	4844	0c66476f182d6b7dc4c474faa3cc92964aa20439f7d4cb11454748f17e4bf397.exe
Token: SeImpersonatePrivilege	4844	0c66476f182d6b7dc4c474faa3cc92964aa20439f7d4cb11454748f17e4bf397.exe
Token: SeCreateGlobalPrivilege	4844	0c66476f182d6b7dc4c474faa3cc92964aa20439f7d4cb11454748f17e4bf397.exe
Token: 33	4844	0c66476f182d6b7dc4c474faa3cc92964aa20439f7d4cb11454748f17e4bf397.exe
Token: 34	4844	0c66476f182d6b7dc4c474faa3cc92964aa20439f7d4cb11454748f17e4bf397.exe
Token: 35	4844	0c66476f182d6b7dc4c474faa3cc92964aa20439f7d4cb11454748f17e4bf397.exe
Token: 36	4844	0c66476f182d6b7dc4c474faa3cc92964aa20439f7d4cb11454748f17e4bf397.exe
Token: SeIncreaseQuotaPrivilege	4788	explorer.exe
Token: SeSecurityPrivilege	4788	explorer.exe
Token: SeTakeOwnershipPrivilege	4788	explorer.exe
Token: SeLoadDriverPrivilege	4788	explorer.exe
Token: SeSystemProfilePrivilege	4788	explorer.exe
Token: SeSystemtimePrivilege	4788	explorer.exe
Token: SeProfSingleProcessPrivilege	4788	explorer.exe
Token: SeIncBasePriorityPrivilege	4788	explorer.exe
Token: SeCreatePagefilePrivilege	4788	explorer.exe
Token: SeBackupPrivilege	4788	explorer.exe
Token: SeRestorePrivilege	4788	explorer.exe
Token: SeShutdownPrivilege	4788	explorer.exe
Token: SeDebugPrivilege	4788	explorer.exe
Token: SeSystemEnvironmentPrivilege	4788	explorer.exe
Token: SeChangeNotifyPrivilege	4788	explorer.exe
Token: SeRemoteShutdownPrivilege	4788	explorer.exe
Token: SeUndockPrivilege	4788	explorer.exe
Token: SeManageVolumePrivilege	4788	explorer.exe
Token: SeImpersonatePrivilege	4788	explorer.exe
Token: SeCreateGlobalPrivilege	4788	explorer.exe
Token: 33	4788	explorer.exe
Token: 34	4788	explorer.exe
Token: 35	4788	explorer.exe
Token: 36	4788	explorer.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
3408	TRAVIANSPAMER.EXE
3408	TRAVIANSPAMER.EXE

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 4844 wrote to memory of 3664	4844	0c66476f182d6b7dc4c474faa3cc92964aa20439f7d4cb11454748f17e4bf397.exe	84
PID 4844 wrote to memory of 3664	4844	0c66476f182d6b7dc4c474faa3cc92964aa20439f7d4cb11454748f17e4bf397.exe	84
PID 4844 wrote to memory of 3664	4844	0c66476f182d6b7dc4c474faa3cc92964aa20439f7d4cb11454748f17e4bf397.exe	84
PID 4844 wrote to memory of 3784	4844	0c66476f182d6b7dc4c474faa3cc92964aa20439f7d4cb11454748f17e4bf397.exe	85
PID 4844 wrote to memory of 3784	4844	0c66476f182d6b7dc4c474faa3cc92964aa20439f7d4cb11454748f17e4bf397.exe	85
PID 4844 wrote to memory of 3784	4844	0c66476f182d6b7dc4c474faa3cc92964aa20439f7d4cb11454748f17e4bf397.exe	85
PID 4844 wrote to memory of 3408	4844	0c66476f182d6b7dc4c474faa3cc92964aa20439f7d4cb11454748f17e4bf397.exe	88
PID 4844 wrote to memory of 3408	4844	0c66476f182d6b7dc4c474faa3cc92964aa20439f7d4cb11454748f17e4bf397.exe	88
PID 4844 wrote to memory of 3408	4844	0c66476f182d6b7dc4c474faa3cc92964aa20439f7d4cb11454748f17e4bf397.exe	88
PID 3664 wrote to memory of 680	3664	cmd.exe	89
PID 3664 wrote to memory of 680	3664	cmd.exe	89
PID 3664 wrote to memory of 680	3664	cmd.exe	89
PID 3784 wrote to memory of 1868	3784	cmd.exe	90
PID 3784 wrote to memory of 1868	3784	cmd.exe	90
PID 3784 wrote to memory of 1868	3784	cmd.exe	90
PID 4844 wrote to memory of 4788	4844	0c66476f182d6b7dc4c474faa3cc92964aa20439f7d4cb11454748f17e4bf397.exe	92
PID 4844 wrote to memory of 4788	4844	0c66476f182d6b7dc4c474faa3cc92964aa20439f7d4cb11454748f17e4bf397.exe	92
PID 4844 wrote to memory of 4788	4844	0c66476f182d6b7dc4c474faa3cc92964aa20439f7d4cb11454748f17e4bf397.exe	92
PID 4844 wrote to memory of 2948	4844	0c66476f182d6b7dc4c474faa3cc92964aa20439f7d4cb11454748f17e4bf397.exe	93
PID 4844 wrote to memory of 2948	4844	0c66476f182d6b7dc4c474faa3cc92964aa20439f7d4cb11454748f17e4bf397.exe	93
PID 4844 wrote to memory of 2948	4844	0c66476f182d6b7dc4c474faa3cc92964aa20439f7d4cb11454748f17e4bf397.exe	93
PID 2948 wrote to memory of 1960	2948	cmd.exe	95
PID 2948 wrote to memory of 1960	2948	cmd.exe	95
PID 2948 wrote to memory of 1960	2948	cmd.exe	95

Views/modifies file attributes 1 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1158

pid	Process
680	attrib.exe
1868	attrib.exe

C:\Users\Admin\AppData\Local\Temp\0c66476f182d6b7dc4c474faa3cc92964aa20439f7d4cb11454748f17e4bf397.exe
"C:\Users\Admin\AppData\Local\Temp\0c66476f182d6b7dc4c474faa3cc92964aa20439f7d4cb11454748f17e4bf397.exe"
1⤵
- Modifies WinLogon for persistence
- Checks computer location settings
- Adds Run key to start application
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4844
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\0c66476f182d6b7dc4c474faa3cc92964aa20439f7d4cb11454748f17e4bf397.exe" +s +h
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3664
- - C:\Windows\SysWOW64\attrib.exe
    attrib "C:\Users\Admin\AppData\Local\Temp\0c66476f182d6b7dc4c474faa3cc92964aa20439f7d4cb11454748f17e4bf397.exe" +s +h
    3⤵
    - Sets file to hidden
    - Views/modifies file attributes
    PID:680
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3784
- - C:\Windows\SysWOW64\attrib.exe
    attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
    3⤵
    - Sets file to hidden
    - Views/modifies file attributes
    PID:1868
- C:\Users\Admin\AppData\Local\Temp\TRAVIANSPAMER.EXE
  "C:\Users\Admin\AppData\Local\Temp\TRAVIANSPAMER.EXE"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetWindowsHookEx
  PID:3408
- C:\Windupdt\explorer.exe
  "C:\Windupdt\explorer.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of AdjustPrivilegeToken
  PID:4788
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /k ping 127.0.0.1 -n 5 > NUL&del "C:\Users\Admin\AppData\Local\Temp\0c66476f182d6b7dc4c474faa3cc92964aa20439f7d4cb11454748f17e4bf397.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2948
- - C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1 -n 5
    3⤵
    - Runs ping.exe
    PID:1960

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Hidden Files and Directories

T1158

Registry Run Keys / Startup Folder

T1060

Winlogon Helper DLL

T1004

Privilege Escalation

Defense Evasion

Hidden Files and Directories

T1158

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

Remote System Discovery

T1018

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\TRAVIANSPAMER.EXE

Filesize
965KB

MD5
f4ade5090f977944c877f95d8ac41634

SHA1
481f617037d19a4553224bdf957a4dc2b0575985

SHA256
f3c76a823bf1858e470712d6a30b140f21b6d3c56bd3f83ed6186e882d667c03

SHA512
e9cbd7cfd90042fff55984524c1846487f86e580dd23668ec853c425af3d005bdf10aac5cc50e5e1c2c3960e6dd682387a63b59245806742b2ff5261e6d12b4d

Download Submit
C:\Users\Admin\AppData\Local\Temp\TRAVIANSPAMER.EXE

Filesize
965KB

MD5
f4ade5090f977944c877f95d8ac41634

SHA1
481f617037d19a4553224bdf957a4dc2b0575985

SHA256
f3c76a823bf1858e470712d6a30b140f21b6d3c56bd3f83ed6186e882d667c03

SHA512
e9cbd7cfd90042fff55984524c1846487f86e580dd23668ec853c425af3d005bdf10aac5cc50e5e1c2c3960e6dd682387a63b59245806742b2ff5261e6d12b4d

Download Submit
C:\Windupdt\explorer.exe

Filesize
495KB

MD5
6968e1184909ad3a6360048ba729dae8

SHA1
a7b56f89f53cfc4feb604ecd765b17492d808b4a

SHA256
0c66476f182d6b7dc4c474faa3cc92964aa20439f7d4cb11454748f17e4bf397

SHA512
27d4e7b25fdd3fa664a4cf4306b9ba61b5e384d7edb8c9708a6e772e965b91f565d7e76560dead77b40d3e2fd425be464b8f0d6223bf466b148319c7887e094f

Download Submit
C:\Windupdt\explorer.exe

Filesize
495KB

MD5
6968e1184909ad3a6360048ba729dae8

SHA1
a7b56f89f53cfc4feb604ecd765b17492d808b4a

SHA256
0c66476f182d6b7dc4c474faa3cc92964aa20439f7d4cb11454748f17e4bf397

SHA512
27d4e7b25fdd3fa664a4cf4306b9ba61b5e384d7edb8c9708a6e772e965b91f565d7e76560dead77b40d3e2fd425be464b8f0d6223bf466b148319c7887e094f

Download Submit
memory/3408-140-0x0000000073120000-0x00000000736D1000-memory.dmp

Filesize
5.7MB

Download
memory/3408-148-0x0000000073120000-0x00000000736D1000-memory.dmp

Filesize
5.7MB

Download
memory/4788-147-0x0000000000400000-0x00000000005CA000-memory.dmp

Filesize
1.8MB

Download
memory/4788-149-0x0000000000400000-0x00000000005CA000-memory.dmp

Filesize
1.8MB

Download
memory/4844-132-0x0000000000400000-0x00000000005CA000-memory.dmp

Filesize
1.8MB

Download
memory/4844-145-0x0000000000400000-0x00000000005CA000-memory.dmp

Filesize
1.8MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads