darkcomet | 5ef891b82e3bf3810d99ac3535d070c3b4615adfcac5d158a3b5b8ea369d9190

General

Target

5ef891b82e3bf3810d99ac3535d070c3b4615adfcac5d158a3b5b8ea369d9190.exe
Size

658KB
MD5

f7bf4b5a76924169cc5bf45cf23902b9
SHA1

3cbcd664a2b51eba71c9efe113e15515e9c900c1
SHA256

5ef891b82e3bf3810d99ac3535d070c3b4615adfcac5d158a3b5b8ea369d9190
SHA512

cdedf956f723bd20f723cb9892d684af18fef9a58eeb67939b04fdd96e18c216adef58a7ab22ab39a6b77d182eb8fdd1e63b936d980d3c5aa3e296661a88a222
SSDEEP

12288:C9HMeUmcufrvA3kb445UEJ2jsWiD4EvFuu4cNgZhCiZKD/XdyFQ:uiBIGkbxqEcjsWiDxguehC2Sr

Score

10^/10

darkcomet guest16 evasion persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

192.168.2.196:1604

Mutex

DC_MUTEX-1CRTNX9

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
gh7aHBKiofzL
install
true
offline_keylogger
true
persistence
false
reg_key
MicroUpdate

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:

5ef891b82e3bf3810d99ac3535d070c3b4615adfcac5d158a3b5b8ea369d9190.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"	5ef891b82e3bf3810d99ac3535d070c3b4615adfcac5d158a3b5b8ea369d9190.exe

Executes dropped EXE 1 IoCs

Processes:

msdcsc.exe

pid process

4308 msdcsc.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

5092 attrib.exe
4728 attrib.exe

pid	process
4308	msdcsc.exe

pid	process
5092	attrib.exe
4728	attrib.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:

5ef891b82e3bf3810d99ac3535d070c3b4615adfcac5d158a3b5b8ea369d9190.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Control Panel\International\Geo\Nation	5ef891b82e3bf3810d99ac3535d070c3b4615adfcac5d158a3b5b8ea369d9190.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

5ef891b82e3bf3810d99ac3535d070c3b4615adfcac5d158a3b5b8ea369d9190.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	5ef891b82e3bf3810d99ac3535d070c3b4615adfcac5d158a3b5b8ea369d9190.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:

5ef891b82e3bf3810d99ac3535d070c3b4615adfcac5d158a3b5b8ea369d9190.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	5ef891b82e3bf3810d99ac3535d070c3b4615adfcac5d158a3b5b8ea369d9190.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

Processes:

5ef891b82e3bf3810d99ac3535d070c3b4615adfcac5d158a3b5b8ea369d9190.exemsdcsc.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	1800	5ef891b82e3bf3810d99ac3535d070c3b4615adfcac5d158a3b5b8ea369d9190.exe
Token: SeSecurityPrivilege	1800	5ef891b82e3bf3810d99ac3535d070c3b4615adfcac5d158a3b5b8ea369d9190.exe
Token: SeTakeOwnershipPrivilege	1800	5ef891b82e3bf3810d99ac3535d070c3b4615adfcac5d158a3b5b8ea369d9190.exe
Token: SeLoadDriverPrivilege	1800	5ef891b82e3bf3810d99ac3535d070c3b4615adfcac5d158a3b5b8ea369d9190.exe
Token: SeSystemProfilePrivilege	1800	5ef891b82e3bf3810d99ac3535d070c3b4615adfcac5d158a3b5b8ea369d9190.exe
Token: SeSystemtimePrivilege	1800	5ef891b82e3bf3810d99ac3535d070c3b4615adfcac5d158a3b5b8ea369d9190.exe
Token: SeProfSingleProcessPrivilege	1800	5ef891b82e3bf3810d99ac3535d070c3b4615adfcac5d158a3b5b8ea369d9190.exe
Token: SeIncBasePriorityPrivilege	1800	5ef891b82e3bf3810d99ac3535d070c3b4615adfcac5d158a3b5b8ea369d9190.exe
Token: SeCreatePagefilePrivilege	1800	5ef891b82e3bf3810d99ac3535d070c3b4615adfcac5d158a3b5b8ea369d9190.exe
Token: SeBackupPrivilege	1800	5ef891b82e3bf3810d99ac3535d070c3b4615adfcac5d158a3b5b8ea369d9190.exe
Token: SeRestorePrivilege	1800	5ef891b82e3bf3810d99ac3535d070c3b4615adfcac5d158a3b5b8ea369d9190.exe
Token: SeShutdownPrivilege	1800	5ef891b82e3bf3810d99ac3535d070c3b4615adfcac5d158a3b5b8ea369d9190.exe
Token: SeDebugPrivilege	1800	5ef891b82e3bf3810d99ac3535d070c3b4615adfcac5d158a3b5b8ea369d9190.exe
Token: SeSystemEnvironmentPrivilege	1800	5ef891b82e3bf3810d99ac3535d070c3b4615adfcac5d158a3b5b8ea369d9190.exe
Token: SeChangeNotifyPrivilege	1800	5ef891b82e3bf3810d99ac3535d070c3b4615adfcac5d158a3b5b8ea369d9190.exe
Token: SeRemoteShutdownPrivilege	1800	5ef891b82e3bf3810d99ac3535d070c3b4615adfcac5d158a3b5b8ea369d9190.exe
Token: SeUndockPrivilege	1800	5ef891b82e3bf3810d99ac3535d070c3b4615adfcac5d158a3b5b8ea369d9190.exe
Token: SeManageVolumePrivilege	1800	5ef891b82e3bf3810d99ac3535d070c3b4615adfcac5d158a3b5b8ea369d9190.exe
Token: SeImpersonatePrivilege	1800	5ef891b82e3bf3810d99ac3535d070c3b4615adfcac5d158a3b5b8ea369d9190.exe
Token: SeCreateGlobalPrivilege	1800	5ef891b82e3bf3810d99ac3535d070c3b4615adfcac5d158a3b5b8ea369d9190.exe
Token: 33	1800	5ef891b82e3bf3810d99ac3535d070c3b4615adfcac5d158a3b5b8ea369d9190.exe
Token: 34	1800	5ef891b82e3bf3810d99ac3535d070c3b4615adfcac5d158a3b5b8ea369d9190.exe
Token: 35	1800	5ef891b82e3bf3810d99ac3535d070c3b4615adfcac5d158a3b5b8ea369d9190.exe
Token: 36	1800	5ef891b82e3bf3810d99ac3535d070c3b4615adfcac5d158a3b5b8ea369d9190.exe
Token: SeIncreaseQuotaPrivilege	4308	msdcsc.exe
Token: SeSecurityPrivilege	4308	msdcsc.exe
Token: SeTakeOwnershipPrivilege	4308	msdcsc.exe
Token: SeLoadDriverPrivilege	4308	msdcsc.exe
Token: SeSystemProfilePrivilege	4308	msdcsc.exe
Token: SeSystemtimePrivilege	4308	msdcsc.exe
Token: SeProfSingleProcessPrivilege	4308	msdcsc.exe
Token: SeIncBasePriorityPrivilege	4308	msdcsc.exe
Token: SeCreatePagefilePrivilege	4308	msdcsc.exe
Token: SeBackupPrivilege	4308	msdcsc.exe
Token: SeRestorePrivilege	4308	msdcsc.exe
Token: SeShutdownPrivilege	4308	msdcsc.exe
Token: SeDebugPrivilege	4308	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	4308	msdcsc.exe
Token: SeChangeNotifyPrivilege	4308	msdcsc.exe
Token: SeRemoteShutdownPrivilege	4308	msdcsc.exe
Token: SeUndockPrivilege	4308	msdcsc.exe
Token: SeManageVolumePrivilege	4308	msdcsc.exe
Token: SeImpersonatePrivilege	4308	msdcsc.exe
Token: SeCreateGlobalPrivilege	4308	msdcsc.exe
Token: 33	4308	msdcsc.exe
Token: 34	4308	msdcsc.exe
Token: 35	4308	msdcsc.exe
Token: 36	4308	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

msdcsc.exe

pid process

4308 msdcsc.exe

pid	process
4308	msdcsc.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

5ef891b82e3bf3810d99ac3535d070c3b4615adfcac5d158a3b5b8ea369d9190.execmd.execmd.exe

description	pid	process	target process
PID 1800 wrote to memory of 4696	1800	5ef891b82e3bf3810d99ac3535d070c3b4615adfcac5d158a3b5b8ea369d9190.exe	cmd.exe
PID 1800 wrote to memory of 4696	1800	5ef891b82e3bf3810d99ac3535d070c3b4615adfcac5d158a3b5b8ea369d9190.exe	cmd.exe
PID 1800 wrote to memory of 4696	1800	5ef891b82e3bf3810d99ac3535d070c3b4615adfcac5d158a3b5b8ea369d9190.exe	cmd.exe
PID 1800 wrote to memory of 1352	1800	5ef891b82e3bf3810d99ac3535d070c3b4615adfcac5d158a3b5b8ea369d9190.exe	cmd.exe
PID 1800 wrote to memory of 1352	1800	5ef891b82e3bf3810d99ac3535d070c3b4615adfcac5d158a3b5b8ea369d9190.exe	cmd.exe
PID 1800 wrote to memory of 1352	1800	5ef891b82e3bf3810d99ac3535d070c3b4615adfcac5d158a3b5b8ea369d9190.exe	cmd.exe
PID 4696 wrote to memory of 4728	4696	cmd.exe	attrib.exe
PID 4696 wrote to memory of 4728	4696	cmd.exe	attrib.exe
PID 4696 wrote to memory of 4728	4696	cmd.exe	attrib.exe
PID 1352 wrote to memory of 5092	1352	cmd.exe	attrib.exe
PID 1352 wrote to memory of 5092	1352	cmd.exe	attrib.exe
PID 1352 wrote to memory of 5092	1352	cmd.exe	attrib.exe
PID 1800 wrote to memory of 4308	1800	5ef891b82e3bf3810d99ac3535d070c3b4615adfcac5d158a3b5b8ea369d9190.exe	msdcsc.exe
PID 1800 wrote to memory of 4308	1800	5ef891b82e3bf3810d99ac3535d070c3b4615adfcac5d158a3b5b8ea369d9190.exe	msdcsc.exe
PID 1800 wrote to memory of 4308	1800	5ef891b82e3bf3810d99ac3535d070c3b4615adfcac5d158a3b5b8ea369d9190.exe	msdcsc.exe

Views/modifies file attributes 1 TTPs 2 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exeattrib.exe

pid process

5092 attrib.exe
4728 attrib.exe

pid	process
5092	attrib.exe
4728	attrib.exe

C:\Users\Admin\AppData\Local\Temp\5ef891b82e3bf3810d99ac3535d070c3b4615adfcac5d158a3b5b8ea369d9190.exe
"C:\Users\Admin\AppData\Local\Temp\5ef891b82e3bf3810d99ac3535d070c3b4615adfcac5d158a3b5b8ea369d9190.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:1800

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\5ef891b82e3bf3810d99ac3535d070c3b4615adfcac5d158a3b5b8ea369d9190.exe" +s +h
2⤵
- Suspicious use of WriteProcessMemory
PID:4696

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp\5ef891b82e3bf3810d99ac3535d070c3b4615adfcac5d158a3b5b8ea369d9190.exe" +s +h
3⤵
- Sets file to hidden
- Views/modifies file attributes
PID:4728

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:1352

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
3⤵
- Sets file to hidden
- Views/modifies file attributes
PID:5092

C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
"C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:4308

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Hidden Files and Directories

2

T1158

Registry Run Keys / Startup Folder

Winlogon Helper DLL

Privilege Escalation

Defense Evasion

Hidden Files and Directories

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

MD5
f7bf4b5a76924169cc5bf45cf23902b9

SHA1
3cbcd664a2b51eba71c9efe113e15515e9c900c1

SHA256
5ef891b82e3bf3810d99ac3535d070c3b4615adfcac5d158a3b5b8ea369d9190

SHA512
cdedf956f723bd20f723cb9892d684af18fef9a58eeb67939b04fdd96e18c216adef58a7ab22ab39a6b77d182eb8fdd1e63b936d980d3c5aa3e296661a88a222

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

MD5
f7bf4b5a76924169cc5bf45cf23902b9

SHA1
3cbcd664a2b51eba71c9efe113e15515e9c900c1

SHA256
5ef891b82e3bf3810d99ac3535d070c3b4615adfcac5d158a3b5b8ea369d9190

SHA512
cdedf956f723bd20f723cb9892d684af18fef9a58eeb67939b04fdd96e18c216adef58a7ab22ab39a6b77d182eb8fdd1e63b936d980d3c5aa3e296661a88a222

Download Submit
memory/1352-133-0x0000000000000000-mapping.dmp

Download
memory/4308-136-0x0000000000000000-mapping.dmp

Download
memory/4696-132-0x0000000000000000-mapping.dmp

Download
memory/4728-134-0x0000000000000000-mapping.dmp

Download
memory/5092-135-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads