darkcomet | 3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f

General

Target

3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe
Size

658KB
MD5

3c41b88825ed5288001a0840f638bb15
SHA1

f12e5059fa029c6eea893ab2e6745922d0d89570
SHA256

3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f
SHA512

bc4b3a9088e0fa70731573c0ac4a8bb4cff8ea68ef737010bfdc6eb0fadaad2e78dda5ca67be4830137f4c3a174d2fec9989b5a638d71d83b4299ede540f4401
SSDEEP

12288:+9HFJ9rJxRX1uVVjoaWSoynxdO1FVBaOiRZTERfIhNkNCCLo9Ek5C/h5:KZ1xuVVjfFoynPaVBUR8f+kN10EBT

Score

10^/10

darkcomet guest16 evasion persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

sussysdfffdfff343.duckdns.org:1604

Mutex

DC_MUTEX-6F4SERN

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
mKaVRbcLZnA8
install
true
offline_keylogger
true
persistence
true
reg_key
Google Handler

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:

3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.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

Processes:

attrib.exeattrib.exe

pid process

688 attrib.exe
1792 attrib.exe
Executes dropped EXE 1 IoCs

Processes:

msdcsc.exe

pid process

1544 msdcsc.exe

pid	process
688	attrib.exe
1792	attrib.exe

pid	process
1544	msdcsc.exe

Loads dropped DLL 2 IoCs

Processes:

3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe

pid	process
1972	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe
1972	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe

Adds Run key to start application 2 TTPs 3 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exemsdcsc.exeiexplore.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1563773381-2037468142-1146002597-1000\Software\Microsoft\Windows\CurrentVersion\Run\Google Handler = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1563773381-2037468142-1146002597-1000\Software\Microsoft\Windows\CurrentVersion\Run\Google Handler = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	msdcsc.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1563773381-2037468142-1146002597-1000\Software\Microsoft\Windows\CurrentVersion\Run\Google Handler = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	iexplore.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

msdcsc.exe

description pid process target process

PID 1544 set thread context of 1084 1544 msdcsc.exe iexplore.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

iexplore.exe

pid process

1084 iexplore.exe

description	pid	process	target process
PID 1544 set thread context of 1084	1544	msdcsc.exe	iexplore.exe

pid	process
1084	iexplore.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

Processes:

3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exemsdcsc.exeiexplore.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	1972	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe
Token: SeSecurityPrivilege	1972	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe
Token: SeTakeOwnershipPrivilege	1972	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe
Token: SeLoadDriverPrivilege	1972	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe
Token: SeSystemProfilePrivilege	1972	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe
Token: SeSystemtimePrivilege	1972	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe
Token: SeProfSingleProcessPrivilege	1972	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe
Token: SeIncBasePriorityPrivilege	1972	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe
Token: SeCreatePagefilePrivilege	1972	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe
Token: SeBackupPrivilege	1972	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe
Token: SeRestorePrivilege	1972	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe
Token: SeShutdownPrivilege	1972	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe
Token: SeDebugPrivilege	1972	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe
Token: SeSystemEnvironmentPrivilege	1972	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe
Token: SeChangeNotifyPrivilege	1972	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe
Token: SeRemoteShutdownPrivilege	1972	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe
Token: SeUndockPrivilege	1972	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe
Token: SeManageVolumePrivilege	1972	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe
Token: SeImpersonatePrivilege	1972	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe
Token: SeCreateGlobalPrivilege	1972	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe
Token: 33	1972	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe
Token: 34	1972	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe
Token: 35	1972	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe
Token: SeIncreaseQuotaPrivilege	1544	msdcsc.exe
Token: SeSecurityPrivilege	1544	msdcsc.exe
Token: SeTakeOwnershipPrivilege	1544	msdcsc.exe
Token: SeLoadDriverPrivilege	1544	msdcsc.exe
Token: SeSystemProfilePrivilege	1544	msdcsc.exe
Token: SeSystemtimePrivilege	1544	msdcsc.exe
Token: SeProfSingleProcessPrivilege	1544	msdcsc.exe
Token: SeIncBasePriorityPrivilege	1544	msdcsc.exe
Token: SeCreatePagefilePrivilege	1544	msdcsc.exe
Token: SeBackupPrivilege	1544	msdcsc.exe
Token: SeRestorePrivilege	1544	msdcsc.exe
Token: SeShutdownPrivilege	1544	msdcsc.exe
Token: SeDebugPrivilege	1544	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	1544	msdcsc.exe
Token: SeChangeNotifyPrivilege	1544	msdcsc.exe
Token: SeRemoteShutdownPrivilege	1544	msdcsc.exe
Token: SeUndockPrivilege	1544	msdcsc.exe
Token: SeManageVolumePrivilege	1544	msdcsc.exe
Token: SeImpersonatePrivilege	1544	msdcsc.exe
Token: SeCreateGlobalPrivilege	1544	msdcsc.exe
Token: 33	1544	msdcsc.exe
Token: 34	1544	msdcsc.exe
Token: 35	1544	msdcsc.exe
Token: SeIncreaseQuotaPrivilege	1084	iexplore.exe
Token: SeSecurityPrivilege	1084	iexplore.exe
Token: SeTakeOwnershipPrivilege	1084	iexplore.exe
Token: SeLoadDriverPrivilege	1084	iexplore.exe
Token: SeSystemProfilePrivilege	1084	iexplore.exe
Token: SeSystemtimePrivilege	1084	iexplore.exe
Token: SeProfSingleProcessPrivilege	1084	iexplore.exe
Token: SeIncBasePriorityPrivilege	1084	iexplore.exe
Token: SeCreatePagefilePrivilege	1084	iexplore.exe
Token: SeBackupPrivilege	1084	iexplore.exe
Token: SeRestorePrivilege	1084	iexplore.exe
Token: SeShutdownPrivilege	1084	iexplore.exe
Token: SeDebugPrivilege	1084	iexplore.exe
Token: SeSystemEnvironmentPrivilege	1084	iexplore.exe
Token: SeChangeNotifyPrivilege	1084	iexplore.exe
Token: SeRemoteShutdownPrivilege	1084	iexplore.exe
Token: SeUndockPrivilege	1084	iexplore.exe
Token: SeManageVolumePrivilege	1084	iexplore.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

iexplore.exe

pid process

1084 iexplore.exe

pid	process
1084	iexplore.exe

Suspicious use of WriteProcessMemory 49 IoCs

Processes:

3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.execmd.execmd.exemsdcsc.exeiexplore.exe

description	pid	process	target process
PID 1972 wrote to memory of 868	1972	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe	cmd.exe
PID 1972 wrote to memory of 868	1972	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe	cmd.exe
PID 1972 wrote to memory of 868	1972	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe	cmd.exe
PID 1972 wrote to memory of 868	1972	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe	cmd.exe
PID 1972 wrote to memory of 2020	1972	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe	cmd.exe
PID 1972 wrote to memory of 2020	1972	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe	cmd.exe
PID 1972 wrote to memory of 2020	1972	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe	cmd.exe
PID 1972 wrote to memory of 2020	1972	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe	cmd.exe
PID 2020 wrote to memory of 1792	2020	cmd.exe	attrib.exe
PID 2020 wrote to memory of 1792	2020	cmd.exe	attrib.exe
PID 2020 wrote to memory of 1792	2020	cmd.exe	attrib.exe
PID 2020 wrote to memory of 1792	2020	cmd.exe	attrib.exe
PID 868 wrote to memory of 688	868	cmd.exe	attrib.exe
PID 868 wrote to memory of 688	868	cmd.exe	attrib.exe
PID 868 wrote to memory of 688	868	cmd.exe	attrib.exe
PID 868 wrote to memory of 688	868	cmd.exe	attrib.exe
PID 1972 wrote to memory of 1544	1972	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe	msdcsc.exe
PID 1972 wrote to memory of 1544	1972	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe	msdcsc.exe
PID 1972 wrote to memory of 1544	1972	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe	msdcsc.exe
PID 1972 wrote to memory of 1544	1972	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe	msdcsc.exe
PID 1544 wrote to memory of 1084	1544	msdcsc.exe	iexplore.exe
PID 1544 wrote to memory of 1084	1544	msdcsc.exe	iexplore.exe
PID 1544 wrote to memory of 1084	1544	msdcsc.exe	iexplore.exe
PID 1544 wrote to memory of 1084	1544	msdcsc.exe	iexplore.exe
PID 1544 wrote to memory of 1084	1544	msdcsc.exe	iexplore.exe
PID 1544 wrote to memory of 1084	1544	msdcsc.exe	iexplore.exe
PID 1084 wrote to memory of 1288	1084	iexplore.exe	notepad.exe
PID 1084 wrote to memory of 1288	1084	iexplore.exe	notepad.exe
PID 1084 wrote to memory of 1288	1084	iexplore.exe	notepad.exe
PID 1084 wrote to memory of 1288	1084	iexplore.exe	notepad.exe
PID 1084 wrote to memory of 1288	1084	iexplore.exe	notepad.exe
PID 1084 wrote to memory of 1288	1084	iexplore.exe	notepad.exe
PID 1084 wrote to memory of 1288	1084	iexplore.exe	notepad.exe
PID 1084 wrote to memory of 1288	1084	iexplore.exe	notepad.exe
PID 1084 wrote to memory of 1288	1084	iexplore.exe	notepad.exe
PID 1084 wrote to memory of 1288	1084	iexplore.exe	notepad.exe
PID 1084 wrote to memory of 1288	1084	iexplore.exe	notepad.exe
PID 1084 wrote to memory of 1288	1084	iexplore.exe	notepad.exe
PID 1084 wrote to memory of 1288	1084	iexplore.exe	notepad.exe
PID 1084 wrote to memory of 1288	1084	iexplore.exe	notepad.exe
PID 1084 wrote to memory of 1288	1084	iexplore.exe	notepad.exe
PID 1084 wrote to memory of 1288	1084	iexplore.exe	notepad.exe
PID 1084 wrote to memory of 1288	1084	iexplore.exe	notepad.exe
PID 1084 wrote to memory of 1288	1084	iexplore.exe	notepad.exe
PID 1084 wrote to memory of 1288	1084	iexplore.exe	notepad.exe
PID 1084 wrote to memory of 1288	1084	iexplore.exe	notepad.exe
PID 1084 wrote to memory of 1288	1084	iexplore.exe	notepad.exe
PID 1084 wrote to memory of 1288	1084	iexplore.exe	notepad.exe
PID 1084 wrote to memory of 1288	1084	iexplore.exe	notepad.exe

Views/modifies file attributes 1 TTPs 2 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exeattrib.exe

pid process

1792 attrib.exe
688 attrib.exe

pid	process
1792	attrib.exe
688	attrib.exe

C:\Users\Admin\AppData\Local\Temp\3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe
"C:\Users\Admin\AppData\Local\Temp\3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe"
1⤵
- Modifies WinLogon for persistence
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1972

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe" +s +h
2⤵
- Suspicious use of WriteProcessMemory
PID:868

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp\3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe" +s +h
3⤵
- Sets file to hidden
- Views/modifies file attributes
PID:688

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:2020

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
3⤵
- Sets file to hidden
- Views/modifies file attributes
PID:1792

C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
"C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
2⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1544

C:\Program Files (x86)\Internet Explorer\iexplore.exe
"C:\Program Files (x86)\Internet Explorer\iexplore.exe"
3⤵
- Adds Run key to start application
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1084

C:\Windows\SysWOW64\notepad.exe
notepad
4⤵
PID:1288

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

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
Filesize
658KB

MD5
3c41b88825ed5288001a0840f638bb15

SHA1
f12e5059fa029c6eea893ab2e6745922d0d89570

SHA256
3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f

SHA512
bc4b3a9088e0fa70731573c0ac4a8bb4cff8ea68ef737010bfdc6eb0fadaad2e78dda5ca67be4830137f4c3a174d2fec9989b5a638d71d83b4299ede540f4401

Download Submit
C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
Filesize
658KB

MD5
3c41b88825ed5288001a0840f638bb15

SHA1
f12e5059fa029c6eea893ab2e6745922d0d89570

SHA256
3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f

SHA512
bc4b3a9088e0fa70731573c0ac4a8bb4cff8ea68ef737010bfdc6eb0fadaad2e78dda5ca67be4830137f4c3a174d2fec9989b5a638d71d83b4299ede540f4401

Download Submit
C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
Filesize
658KB

MD5
3c41b88825ed5288001a0840f638bb15

SHA1
f12e5059fa029c6eea893ab2e6745922d0d89570

SHA256
3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f

SHA512
bc4b3a9088e0fa70731573c0ac4a8bb4cff8ea68ef737010bfdc6eb0fadaad2e78dda5ca67be4830137f4c3a174d2fec9989b5a638d71d83b4299ede540f4401

Download Submit
\Users\Admin\Documents\MSDCSC\msdcsc.exe
Filesize
658KB

MD5
3c41b88825ed5288001a0840f638bb15

SHA1
f12e5059fa029c6eea893ab2e6745922d0d89570

SHA256
3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f

SHA512
bc4b3a9088e0fa70731573c0ac4a8bb4cff8ea68ef737010bfdc6eb0fadaad2e78dda5ca67be4830137f4c3a174d2fec9989b5a638d71d83b4299ede540f4401

Download Submit
\Users\Admin\Documents\MSDCSC\msdcsc.exe
Filesize
658KB

MD5
3c41b88825ed5288001a0840f638bb15

SHA1
f12e5059fa029c6eea893ab2e6745922d0d89570

SHA256
3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f

SHA512
bc4b3a9088e0fa70731573c0ac4a8bb4cff8ea68ef737010bfdc6eb0fadaad2e78dda5ca67be4830137f4c3a174d2fec9989b5a638d71d83b4299ede540f4401

Download Submit
memory/1084-66-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/1288-68-0x00000000000C0000-0x00000000000C1000-memory.dmp

Filesize
4KB

Download
memory/1288-87-0x00000000003D0000-0x00000000003D1000-memory.dmp

Filesize
4KB

Download
memory/1544-67-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/1972-56-0x0000000000240000-0x0000000000241000-memory.dmp

Filesize
4KB

Download
memory/1972-88-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads