darkcomet | 63721711206a78dedb75769140e4464337c83a4c01ea7b5584c89c824a4b2923

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

T1547.004

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
T1564.001

Processes:

attrib.exeattrib.exe

pid process

3436 attrib.exe
420 attrib.exe
Executes dropped EXE 1 IoCs

Processes:

msdcsc.exe

pid process

1484 msdcsc.exe

pid	process
3436	attrib.exe
420	attrib.exe

pid	process
1484	msdcsc.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exemsdcsc.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2930051783-2551506282-3430162621-1000\Software\Microsoft\Windows\CurrentVersion\Run\Google Handler = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2930051783-2551506282-3430162621-1000\Software\Microsoft\Windows\CurrentVersion\Run\Google Handler = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	msdcsc.exe

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

System Information Discovery
T1082

Modifies registry class 1 IoCs

Processes:

3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

Processes:

3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exemsdcsc.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	3576	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe
Token: SeSecurityPrivilege	3576	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe
Token: SeTakeOwnershipPrivilege	3576	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe
Token: SeLoadDriverPrivilege	3576	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe
Token: SeSystemProfilePrivilege	3576	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe
Token: SeSystemtimePrivilege	3576	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe
Token: SeProfSingleProcessPrivilege	3576	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe
Token: SeIncBasePriorityPrivilege	3576	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe
Token: SeCreatePagefilePrivilege	3576	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe
Token: SeBackupPrivilege	3576	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe
Token: SeRestorePrivilege	3576	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe
Token: SeShutdownPrivilege	3576	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe
Token: SeDebugPrivilege	3576	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe
Token: SeSystemEnvironmentPrivilege	3576	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe
Token: SeChangeNotifyPrivilege	3576	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe
Token: SeRemoteShutdownPrivilege	3576	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe
Token: SeUndockPrivilege	3576	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe
Token: SeManageVolumePrivilege	3576	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe
Token: SeImpersonatePrivilege	3576	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe
Token: SeCreateGlobalPrivilege	3576	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe
Token: 33	3576	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe
Token: 34	3576	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe
Token: 35	3576	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe
Token: 36	3576	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe
Token: SeIncreaseQuotaPrivilege	1484	msdcsc.exe
Token: SeSecurityPrivilege	1484	msdcsc.exe
Token: SeTakeOwnershipPrivilege	1484	msdcsc.exe
Token: SeLoadDriverPrivilege	1484	msdcsc.exe
Token: SeSystemProfilePrivilege	1484	msdcsc.exe
Token: SeSystemtimePrivilege	1484	msdcsc.exe
Token: SeProfSingleProcessPrivilege	1484	msdcsc.exe
Token: SeIncBasePriorityPrivilege	1484	msdcsc.exe
Token: SeCreatePagefilePrivilege	1484	msdcsc.exe
Token: SeBackupPrivilege	1484	msdcsc.exe
Token: SeRestorePrivilege	1484	msdcsc.exe
Token: SeShutdownPrivilege	1484	msdcsc.exe
Token: SeDebugPrivilege	1484	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	1484	msdcsc.exe
Token: SeChangeNotifyPrivilege	1484	msdcsc.exe
Token: SeRemoteShutdownPrivilege	1484	msdcsc.exe
Token: SeUndockPrivilege	1484	msdcsc.exe
Token: SeManageVolumePrivilege	1484	msdcsc.exe
Token: SeImpersonatePrivilege	1484	msdcsc.exe
Token: SeCreateGlobalPrivilege	1484	msdcsc.exe
Token: 33	1484	msdcsc.exe
Token: 34	1484	msdcsc.exe
Token: 35	1484	msdcsc.exe
Token: 36	1484	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

msdcsc.exe

pid process

1484 msdcsc.exe

pid	process
1484	msdcsc.exe

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.execmd.execmd.exemsdcsc.exe

description	pid	process	target process
PID 3576 wrote to memory of 3168	3576	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe	cmd.exe
PID 3576 wrote to memory of 3168	3576	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe	cmd.exe
PID 3576 wrote to memory of 3168	3576	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe	cmd.exe
PID 3576 wrote to memory of 4480	3576	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe	cmd.exe
PID 3576 wrote to memory of 4480	3576	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe	cmd.exe
PID 3576 wrote to memory of 4480	3576	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe	cmd.exe
PID 3168 wrote to memory of 3436	3168	cmd.exe	attrib.exe
PID 3168 wrote to memory of 3436	3168	cmd.exe	attrib.exe
PID 3168 wrote to memory of 3436	3168	cmd.exe	attrib.exe
PID 4480 wrote to memory of 420	4480	cmd.exe	attrib.exe
PID 4480 wrote to memory of 420	4480	cmd.exe	attrib.exe
PID 4480 wrote to memory of 420	4480	cmd.exe	attrib.exe
PID 3576 wrote to memory of 1484	3576	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe	msdcsc.exe
PID 3576 wrote to memory of 1484	3576	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe	msdcsc.exe
PID 3576 wrote to memory of 1484	3576	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe	msdcsc.exe
PID 1484 wrote to memory of 4048	1484	msdcsc.exe	iexplore.exe
PID 1484 wrote to memory of 4048	1484	msdcsc.exe	iexplore.exe
PID 1484 wrote to memory of 4048	1484	msdcsc.exe	iexplore.exe
PID 1484 wrote to memory of 4160	1484	msdcsc.exe	explorer.exe
PID 1484 wrote to memory of 4160	1484	msdcsc.exe	explorer.exe

Views/modifies file attributes 1 TTPs 2 IoCs
evasion

Hidden Files and Directories
T1564.001

Processes:

attrib.exeattrib.exe

pid process

3436 attrib.exe
420 attrib.exe

pid	process
3436	attrib.exe
420	attrib.exe

C:\Users\Admin\AppData\Local\Temp\3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe
"C:\Users\Admin\AppData\Local\Temp\3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe"
1⤵
- Modifies WinLogon for persistence
- Adds Run key to start application
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3576

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:3168

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:3436

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:4480

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
3⤵
- Sets file to hidden
- Views/modifies file attributes
PID:420

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 AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1484

C:\Program Files (x86)\Internet Explorer\iexplore.exe
"C:\Program Files (x86)\Internet Explorer\iexplore.exe"
3⤵
PID:4048

C:\Windows\explorer.exe
"C:\Windows\explorer.exe"
3⤵
PID:4160

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

2

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Winlogon Helper DLL

1

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

2

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Winlogon Helper DLL

1

T1547.004

Defense Evasion

Modify Registry

2

T1112

Hide Artifacts

2

T1564

Hidden Files and Directories

2

T1564.001

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

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

MD5
3c41b88825ed5288001a0840f638bb15

SHA1
f12e5059fa029c6eea893ab2e6745922d0d89570

SHA256
3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f

SHA512
bc4b3a9088e0fa70731573c0ac4a8bb4cff8ea68ef737010bfdc6eb0fadaad2e78dda5ca67be4830137f4c3a174d2fec9989b5a638d71d83b4299ede540f4401

Download Submit
memory/1484-61-0x0000000002230000-0x0000000002231000-memory.dmp

Filesize
4KB

Download
memory/3576-0-0x00000000024B0000-0x00000000024B1000-memory.dmp

Filesize
4KB

Download
memory/3576-62-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads