darkcomet | 6f08293219654fea6c04ef20b911c4b3d28029ae32b9bcfaa7278df56a059ede

General

Target

1yyoRs4y38XZvNF9YQAk.exe
Size

658KB
MD5

db08908582b5fadec29d5ea3c91b954a
SHA1

fedaf416dd8019a55657d8321d70e2d09c98c595
SHA256

6f08293219654fea6c04ef20b911c4b3d28029ae32b9bcfaa7278df56a059ede
SHA512

05e99bb91df650d18da64d2133c7e289c0485d28e289aa77d1c0e0366473e33da3f0d955a29c93d88f4a47b40f766611cf3c3d07174c602cbb2bf6a76641e916

Score

10^/10

darkcomet guest16 evasion persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

nanocore4459.ddns.net:5552

Mutex

DC_MUTEX-WPZT55M

Attributes

InstallPath
C:\Windows\System32\drivers\networkdrv.exe
gencode
CtFSuaWNSfPv
install
true
offline_keylogger
true
persistence
true
reg_key
Network Driver

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

Processes:

1yyoRs4y38XZvNF9YQAk.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Windows\\System32\\drivers\\networkdrv.exe"	1yyoRs4y38XZvNF9YQAk.exe

Drops file in Drivers directory 3 IoCs

Processes:

1yyoRs4y38XZvNF9YQAk.exe

description	ioc	process
File created	C:\Windows\SysWOW64\drivers\networkdrv.exe	1yyoRs4y38XZvNF9YQAk.exe
File opened for modification	C:\Windows\SysWOW64\drivers\networkdrv.exe	1yyoRs4y38XZvNF9YQAk.exe
File opened for modification	C:\Windows\SysWOW64\drivers\	1yyoRs4y38XZvNF9YQAk.exe

Executes dropped EXE 1 IoCs

Processes:

networkdrv.exe

pid process

1840 networkdrv.exe
Sets file to hidden 1 TTPs
Modifies file attributes to stop it showing in Explorer etc.
evasion

Hidden Files and Directories
T1158

pid	process
1840	networkdrv.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:

1yyoRs4y38XZvNF9YQAk.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Control Panel\International\Geo\Nation	1yyoRs4y38XZvNF9YQAk.exe

Deletes itself 1 IoCs

Processes:

notepad.exe

pid process

584 notepad.exe

pid	process
584	notepad.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

1yyoRs4y38XZvNF9YQAk.exenetworkdrv.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Windows\CurrentVersion\Run\Network Driver = "C:\\Windows\\System32\\drivers\\networkdrv.exe"	1yyoRs4y38XZvNF9YQAk.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Windows\CurrentVersion\Run\Network Driver = "C:\\Windows\\System32\\drivers\\networkdrv.exe"	networkdrv.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

Processes:

1yyoRs4y38XZvNF9YQAk.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance	1yyoRs4y38XZvNF9YQAk.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

Processes:

1yyoRs4y38XZvNF9YQAk.exenetworkdrv.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	740	1yyoRs4y38XZvNF9YQAk.exe
Token: SeSecurityPrivilege	740	1yyoRs4y38XZvNF9YQAk.exe
Token: SeTakeOwnershipPrivilege	740	1yyoRs4y38XZvNF9YQAk.exe
Token: SeLoadDriverPrivilege	740	1yyoRs4y38XZvNF9YQAk.exe
Token: SeSystemProfilePrivilege	740	1yyoRs4y38XZvNF9YQAk.exe
Token: SeSystemtimePrivilege	740	1yyoRs4y38XZvNF9YQAk.exe
Token: SeProfSingleProcessPrivilege	740	1yyoRs4y38XZvNF9YQAk.exe
Token: SeIncBasePriorityPrivilege	740	1yyoRs4y38XZvNF9YQAk.exe
Token: SeCreatePagefilePrivilege	740	1yyoRs4y38XZvNF9YQAk.exe
Token: SeBackupPrivilege	740	1yyoRs4y38XZvNF9YQAk.exe
Token: SeRestorePrivilege	740	1yyoRs4y38XZvNF9YQAk.exe
Token: SeShutdownPrivilege	740	1yyoRs4y38XZvNF9YQAk.exe
Token: SeDebugPrivilege	740	1yyoRs4y38XZvNF9YQAk.exe
Token: SeSystemEnvironmentPrivilege	740	1yyoRs4y38XZvNF9YQAk.exe
Token: SeChangeNotifyPrivilege	740	1yyoRs4y38XZvNF9YQAk.exe
Token: SeRemoteShutdownPrivilege	740	1yyoRs4y38XZvNF9YQAk.exe
Token: SeUndockPrivilege	740	1yyoRs4y38XZvNF9YQAk.exe
Token: SeManageVolumePrivilege	740	1yyoRs4y38XZvNF9YQAk.exe
Token: SeImpersonatePrivilege	740	1yyoRs4y38XZvNF9YQAk.exe
Token: SeCreateGlobalPrivilege	740	1yyoRs4y38XZvNF9YQAk.exe
Token: 33	740	1yyoRs4y38XZvNF9YQAk.exe
Token: 34	740	1yyoRs4y38XZvNF9YQAk.exe
Token: 35	740	1yyoRs4y38XZvNF9YQAk.exe
Token: 36	740	1yyoRs4y38XZvNF9YQAk.exe
Token: SeIncreaseQuotaPrivilege	1840	networkdrv.exe
Token: SeSecurityPrivilege	1840	networkdrv.exe
Token: SeTakeOwnershipPrivilege	1840	networkdrv.exe
Token: SeLoadDriverPrivilege	1840	networkdrv.exe
Token: SeSystemProfilePrivilege	1840	networkdrv.exe
Token: SeSystemtimePrivilege	1840	networkdrv.exe
Token: SeProfSingleProcessPrivilege	1840	networkdrv.exe
Token: SeIncBasePriorityPrivilege	1840	networkdrv.exe
Token: SeCreatePagefilePrivilege	1840	networkdrv.exe
Token: SeBackupPrivilege	1840	networkdrv.exe
Token: SeRestorePrivilege	1840	networkdrv.exe
Token: SeShutdownPrivilege	1840	networkdrv.exe
Token: SeDebugPrivilege	1840	networkdrv.exe
Token: SeSystemEnvironmentPrivilege	1840	networkdrv.exe
Token: SeChangeNotifyPrivilege	1840	networkdrv.exe
Token: SeRemoteShutdownPrivilege	1840	networkdrv.exe
Token: SeUndockPrivilege	1840	networkdrv.exe
Token: SeManageVolumePrivilege	1840	networkdrv.exe
Token: SeImpersonatePrivilege	1840	networkdrv.exe
Token: SeCreateGlobalPrivilege	1840	networkdrv.exe
Token: 33	1840	networkdrv.exe
Token: 34	1840	networkdrv.exe
Token: 35	1840	networkdrv.exe
Token: 36	1840	networkdrv.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

networkdrv.exe

pid process

1840 networkdrv.exe

pid	process
1840	networkdrv.exe

Suspicious use of WriteProcessMemory 53 IoCs

Processes:

1yyoRs4y38XZvNF9YQAk.execmd.exenetworkdrv.exe

description	pid	process	target process
PID 740 wrote to memory of 3272	740	1yyoRs4y38XZvNF9YQAk.exe	cmd.exe
PID 740 wrote to memory of 3272	740	1yyoRs4y38XZvNF9YQAk.exe	cmd.exe
PID 740 wrote to memory of 3272	740	1yyoRs4y38XZvNF9YQAk.exe	cmd.exe
PID 740 wrote to memory of 584	740	1yyoRs4y38XZvNF9YQAk.exe	notepad.exe
PID 740 wrote to memory of 584	740	1yyoRs4y38XZvNF9YQAk.exe	notepad.exe
PID 740 wrote to memory of 584	740	1yyoRs4y38XZvNF9YQAk.exe	notepad.exe
PID 740 wrote to memory of 584	740	1yyoRs4y38XZvNF9YQAk.exe	notepad.exe
PID 740 wrote to memory of 584	740	1yyoRs4y38XZvNF9YQAk.exe	notepad.exe
PID 740 wrote to memory of 584	740	1yyoRs4y38XZvNF9YQAk.exe	notepad.exe
PID 740 wrote to memory of 584	740	1yyoRs4y38XZvNF9YQAk.exe	notepad.exe
PID 740 wrote to memory of 584	740	1yyoRs4y38XZvNF9YQAk.exe	notepad.exe
PID 740 wrote to memory of 584	740	1yyoRs4y38XZvNF9YQAk.exe	notepad.exe
PID 740 wrote to memory of 584	740	1yyoRs4y38XZvNF9YQAk.exe	notepad.exe
PID 740 wrote to memory of 584	740	1yyoRs4y38XZvNF9YQAk.exe	notepad.exe
PID 740 wrote to memory of 584	740	1yyoRs4y38XZvNF9YQAk.exe	notepad.exe
PID 740 wrote to memory of 584	740	1yyoRs4y38XZvNF9YQAk.exe	notepad.exe
PID 740 wrote to memory of 584	740	1yyoRs4y38XZvNF9YQAk.exe	notepad.exe
PID 740 wrote to memory of 584	740	1yyoRs4y38XZvNF9YQAk.exe	notepad.exe
PID 740 wrote to memory of 584	740	1yyoRs4y38XZvNF9YQAk.exe	notepad.exe
PID 740 wrote to memory of 584	740	1yyoRs4y38XZvNF9YQAk.exe	notepad.exe
PID 3272 wrote to memory of 204	3272	cmd.exe	attrib.exe
PID 3272 wrote to memory of 204	3272	cmd.exe	attrib.exe
PID 3272 wrote to memory of 204	3272	cmd.exe	attrib.exe
PID 740 wrote to memory of 1840	740	1yyoRs4y38XZvNF9YQAk.exe	networkdrv.exe
PID 740 wrote to memory of 1840	740	1yyoRs4y38XZvNF9YQAk.exe	networkdrv.exe
PID 740 wrote to memory of 1840	740	1yyoRs4y38XZvNF9YQAk.exe	networkdrv.exe
PID 1840 wrote to memory of 3676	1840	networkdrv.exe	iexplore.exe
PID 1840 wrote to memory of 3676	1840	networkdrv.exe	iexplore.exe
PID 1840 wrote to memory of 3676	1840	networkdrv.exe	iexplore.exe
PID 1840 wrote to memory of 1416	1840	networkdrv.exe	explorer.exe
PID 1840 wrote to memory of 1416	1840	networkdrv.exe	explorer.exe
PID 1840 wrote to memory of 3084	1840	networkdrv.exe	notepad.exe
PID 1840 wrote to memory of 3084	1840	networkdrv.exe	notepad.exe
PID 1840 wrote to memory of 3084	1840	networkdrv.exe	notepad.exe
PID 1840 wrote to memory of 3084	1840	networkdrv.exe	notepad.exe
PID 1840 wrote to memory of 3084	1840	networkdrv.exe	notepad.exe
PID 1840 wrote to memory of 3084	1840	networkdrv.exe	notepad.exe
PID 1840 wrote to memory of 3084	1840	networkdrv.exe	notepad.exe
PID 1840 wrote to memory of 3084	1840	networkdrv.exe	notepad.exe
PID 1840 wrote to memory of 3084	1840	networkdrv.exe	notepad.exe
PID 1840 wrote to memory of 3084	1840	networkdrv.exe	notepad.exe
PID 1840 wrote to memory of 3084	1840	networkdrv.exe	notepad.exe
PID 1840 wrote to memory of 3084	1840	networkdrv.exe	notepad.exe
PID 1840 wrote to memory of 3084	1840	networkdrv.exe	notepad.exe
PID 1840 wrote to memory of 3084	1840	networkdrv.exe	notepad.exe
PID 1840 wrote to memory of 3084	1840	networkdrv.exe	notepad.exe
PID 1840 wrote to memory of 3084	1840	networkdrv.exe	notepad.exe
PID 1840 wrote to memory of 3084	1840	networkdrv.exe	notepad.exe
PID 1840 wrote to memory of 3084	1840	networkdrv.exe	notepad.exe
PID 1840 wrote to memory of 3084	1840	networkdrv.exe	notepad.exe
PID 1840 wrote to memory of 3084	1840	networkdrv.exe	notepad.exe
PID 1840 wrote to memory of 3084	1840	networkdrv.exe	notepad.exe
PID 1840 wrote to memory of 3084	1840	networkdrv.exe	notepad.exe

Views/modifies file attributes 1 TTPs 1 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exe

pid process

204 attrib.exe

pid	process
204	attrib.exe

C:\Users\Admin\AppData\Local\Temp\1yyoRs4y38XZvNF9YQAk.exe
"C:\Users\Admin\AppData\Local\Temp\1yyoRs4y38XZvNF9YQAk.exe"
1⤵
- Modifies WinLogon for persistence
- Drops file in Drivers directory
- Checks computer location settings
- Adds Run key to start application
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:740

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\1yyoRs4y38XZvNF9YQAk.exe" +s +h
2⤵
- Suspicious use of WriteProcessMemory
PID:3272

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp\1yyoRs4y38XZvNF9YQAk.exe" +s +h
3⤵
- Views/modifies file attributes
PID:204

C:\Windows\SysWOW64\notepad.exe
notepad
2⤵
- Deletes itself
PID:584

C:\Windows\SysWOW64\drivers\networkdrv.exe
"C:\Windows\System32\drivers\networkdrv.exe"
2⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1840

C:\Program Files (x86)\Internet Explorer\iexplore.exe
"C:\Program Files (x86)\Internet Explorer\iexplore.exe"
3⤵
PID:3676

C:\Windows\explorer.exe
"C:\Windows\explorer.exe"
3⤵
PID:1416

C:\Windows\SysWOW64\notepad.exe
notepad
3⤵
PID:3084

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Winlogon Helper DLL

1

T1004

Hidden Files and Directories

2

T1158

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

2

T1112

Hidden Files and Directories

2

T1158

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Windows\SysWOW64\drivers\networkdrv.exe
MD5
db08908582b5fadec29d5ea3c91b954a

SHA1
fedaf416dd8019a55657d8321d70e2d09c98c595

SHA256
6f08293219654fea6c04ef20b911c4b3d28029ae32b9bcfaa7278df56a059ede

SHA512
05e99bb91df650d18da64d2133c7e289c0485d28e289aa77d1c0e0366473e33da3f0d955a29c93d88f4a47b40f766611cf3c3d07174c602cbb2bf6a76641e916

Download Submit
C:\Windows\SysWOW64\drivers\networkdrv.exe
MD5
db08908582b5fadec29d5ea3c91b954a

SHA1
fedaf416dd8019a55657d8321d70e2d09c98c595

SHA256
6f08293219654fea6c04ef20b911c4b3d28029ae32b9bcfaa7278df56a059ede

SHA512
05e99bb91df650d18da64d2133c7e289c0485d28e289aa77d1c0e0366473e33da3f0d955a29c93d88f4a47b40f766611cf3c3d07174c602cbb2bf6a76641e916

Download Submit
memory/204-117-0x0000000000000000-mapping.dmp

Download
memory/584-116-0x0000000000000000-mapping.dmp

Download
memory/584-118-0x00000000007E0000-0x00000000007E1000-memory.dmp

Filesize
4KB

Download
memory/740-114-0x0000000000780000-0x0000000000781000-memory.dmp

Filesize
4KB

Download
memory/1840-119-0x0000000000000000-mapping.dmp

Download
memory/1840-123-0x00000000020F0000-0x00000000020F1000-memory.dmp

Filesize
4KB

Download
memory/3084-122-0x0000000000000000-mapping.dmp

Download
memory/3084-124-0x00000000004B0000-0x00000000004B1000-memory.dmp

Filesize
4KB

Download
memory/3272-115-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads