darkcomet | cb96be84d722c68fb65e3523c4e0043cdc8cfa252ec045bc7c4ee230c85a83f8

General

Target

cb96be84d722c68fb65e3523c4e0043cdc8cfa252ec045bc7c4ee230c85a83f8.exe
Size

738KB
MD5

5eb58198721d4ded363e41e243e685cc
SHA1

d3e349f052d215f392fbbdc657583d808fe51828
SHA256

cb96be84d722c68fb65e3523c4e0043cdc8cfa252ec045bc7c4ee230c85a83f8
SHA512

8fd1ee50b3cd82d8764f818a78fc3f4fca83a689a8927b856feca15a469eb9e32447902cfd819ddbf5b97fabcfbea2de2464c0304bb3f5e10ff1ebe26e7737b6

Score

10^/10

darkcomet delvie persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

delvie

C2

saw-88.no-ip.biz:1604

Mutex

DC_MUTEX-T3GAC5L

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
zSVFbDa27L2S
install
true
offline_keylogger
true
persistence
true
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:

cb96be84d722c68fb65e3523c4e0043cdc8cfa252ec045bc7c4ee230c85a83f8.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\MSDCSC\\msdcsc.exe"	cb96be84d722c68fb65e3523c4e0043cdc8cfa252ec045bc7c4ee230c85a83f8.exe

Executes dropped EXE 2 IoCs

Processes:

msdcsc.exemsdcsc.exe

pid process

1132 msdcsc.exe
2236 msdcsc.exe

pid	process
1132	msdcsc.exe
2236	msdcsc.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:

cb96be84d722c68fb65e3523c4e0043cdc8cfa252ec045bc7c4ee230c85a83f8.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1101907861-274115917-2188613224-1000\Control Panel\International\Geo\Nation	cb96be84d722c68fb65e3523c4e0043cdc8cfa252ec045bc7c4ee230c85a83f8.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

cb96be84d722c68fb65e3523c4e0043cdc8cfa252ec045bc7c4ee230c85a83f8.exemsdcsc.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1101907861-274115917-2188613224-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\MSDCSC\\msdcsc.exe"	cb96be84d722c68fb65e3523c4e0043cdc8cfa252ec045bc7c4ee230c85a83f8.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1101907861-274115917-2188613224-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\MSDCSC\\msdcsc.exe"	msdcsc.exe

Suspicious use of SetThreadContext 4 IoCs

Processes:

cb96be84d722c68fb65e3523c4e0043cdc8cfa252ec045bc7c4ee230c85a83f8.exemsdcsc.exemsdcsc.exeiexplore.exe

description	pid	process	target process
PID 4608 set thread context of 4580	4608	cb96be84d722c68fb65e3523c4e0043cdc8cfa252ec045bc7c4ee230c85a83f8.exe	cb96be84d722c68fb65e3523c4e0043cdc8cfa252ec045bc7c4ee230c85a83f8.exe
PID 1132 set thread context of 2236	1132	msdcsc.exe	msdcsc.exe
PID 2236 set thread context of 4244	2236	msdcsc.exe	iexplore.exe
PID 4244 set thread context of 4872	4244	iexplore.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

Modifies registry class 1 IoCs

Processes:

cb96be84d722c68fb65e3523c4e0043cdc8cfa252ec045bc7c4ee230c85a83f8.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	cb96be84d722c68fb65e3523c4e0043cdc8cfa252ec045bc7c4ee230c85a83f8.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

Processes:

cb96be84d722c68fb65e3523c4e0043cdc8cfa252ec045bc7c4ee230c85a83f8.exemsdcsc.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	4580	cb96be84d722c68fb65e3523c4e0043cdc8cfa252ec045bc7c4ee230c85a83f8.exe
Token: SeSecurityPrivilege	4580	cb96be84d722c68fb65e3523c4e0043cdc8cfa252ec045bc7c4ee230c85a83f8.exe
Token: SeTakeOwnershipPrivilege	4580	cb96be84d722c68fb65e3523c4e0043cdc8cfa252ec045bc7c4ee230c85a83f8.exe
Token: SeLoadDriverPrivilege	4580	cb96be84d722c68fb65e3523c4e0043cdc8cfa252ec045bc7c4ee230c85a83f8.exe
Token: SeSystemProfilePrivilege	4580	cb96be84d722c68fb65e3523c4e0043cdc8cfa252ec045bc7c4ee230c85a83f8.exe
Token: SeSystemtimePrivilege	4580	cb96be84d722c68fb65e3523c4e0043cdc8cfa252ec045bc7c4ee230c85a83f8.exe
Token: SeProfSingleProcessPrivilege	4580	cb96be84d722c68fb65e3523c4e0043cdc8cfa252ec045bc7c4ee230c85a83f8.exe
Token: SeIncBasePriorityPrivilege	4580	cb96be84d722c68fb65e3523c4e0043cdc8cfa252ec045bc7c4ee230c85a83f8.exe
Token: SeCreatePagefilePrivilege	4580	cb96be84d722c68fb65e3523c4e0043cdc8cfa252ec045bc7c4ee230c85a83f8.exe
Token: SeBackupPrivilege	4580	cb96be84d722c68fb65e3523c4e0043cdc8cfa252ec045bc7c4ee230c85a83f8.exe
Token: SeRestorePrivilege	4580	cb96be84d722c68fb65e3523c4e0043cdc8cfa252ec045bc7c4ee230c85a83f8.exe
Token: SeShutdownPrivilege	4580	cb96be84d722c68fb65e3523c4e0043cdc8cfa252ec045bc7c4ee230c85a83f8.exe
Token: SeDebugPrivilege	4580	cb96be84d722c68fb65e3523c4e0043cdc8cfa252ec045bc7c4ee230c85a83f8.exe
Token: SeSystemEnvironmentPrivilege	4580	cb96be84d722c68fb65e3523c4e0043cdc8cfa252ec045bc7c4ee230c85a83f8.exe
Token: SeChangeNotifyPrivilege	4580	cb96be84d722c68fb65e3523c4e0043cdc8cfa252ec045bc7c4ee230c85a83f8.exe
Token: SeRemoteShutdownPrivilege	4580	cb96be84d722c68fb65e3523c4e0043cdc8cfa252ec045bc7c4ee230c85a83f8.exe
Token: SeUndockPrivilege	4580	cb96be84d722c68fb65e3523c4e0043cdc8cfa252ec045bc7c4ee230c85a83f8.exe
Token: SeManageVolumePrivilege	4580	cb96be84d722c68fb65e3523c4e0043cdc8cfa252ec045bc7c4ee230c85a83f8.exe
Token: SeImpersonatePrivilege	4580	cb96be84d722c68fb65e3523c4e0043cdc8cfa252ec045bc7c4ee230c85a83f8.exe
Token: SeCreateGlobalPrivilege	4580	cb96be84d722c68fb65e3523c4e0043cdc8cfa252ec045bc7c4ee230c85a83f8.exe
Token: 33	4580	cb96be84d722c68fb65e3523c4e0043cdc8cfa252ec045bc7c4ee230c85a83f8.exe
Token: 34	4580	cb96be84d722c68fb65e3523c4e0043cdc8cfa252ec045bc7c4ee230c85a83f8.exe
Token: 35	4580	cb96be84d722c68fb65e3523c4e0043cdc8cfa252ec045bc7c4ee230c85a83f8.exe
Token: 36	4580	cb96be84d722c68fb65e3523c4e0043cdc8cfa252ec045bc7c4ee230c85a83f8.exe
Token: SeIncreaseQuotaPrivilege	2236	msdcsc.exe
Token: SeSecurityPrivilege	2236	msdcsc.exe
Token: SeTakeOwnershipPrivilege	2236	msdcsc.exe
Token: SeLoadDriverPrivilege	2236	msdcsc.exe
Token: SeSystemProfilePrivilege	2236	msdcsc.exe
Token: SeSystemtimePrivilege	2236	msdcsc.exe
Token: SeProfSingleProcessPrivilege	2236	msdcsc.exe
Token: SeIncBasePriorityPrivilege	2236	msdcsc.exe
Token: SeCreatePagefilePrivilege	2236	msdcsc.exe
Token: SeBackupPrivilege	2236	msdcsc.exe
Token: SeRestorePrivilege	2236	msdcsc.exe
Token: SeShutdownPrivilege	2236	msdcsc.exe
Token: SeDebugPrivilege	2236	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	2236	msdcsc.exe
Token: SeChangeNotifyPrivilege	2236	msdcsc.exe
Token: SeRemoteShutdownPrivilege	2236	msdcsc.exe
Token: SeUndockPrivilege	2236	msdcsc.exe
Token: SeManageVolumePrivilege	2236	msdcsc.exe
Token: SeImpersonatePrivilege	2236	msdcsc.exe
Token: SeCreateGlobalPrivilege	2236	msdcsc.exe
Token: 33	2236	msdcsc.exe
Token: 34	2236	msdcsc.exe
Token: 35	2236	msdcsc.exe
Token: 36	2236	msdcsc.exe

Suspicious use of WriteProcessMemory 40 IoCs

Processes:

cb96be84d722c68fb65e3523c4e0043cdc8cfa252ec045bc7c4ee230c85a83f8.execb96be84d722c68fb65e3523c4e0043cdc8cfa252ec045bc7c4ee230c85a83f8.exemsdcsc.exemsdcsc.exeiexplore.exe

description	pid	process	target process
PID 4608 wrote to memory of 4580	4608	cb96be84d722c68fb65e3523c4e0043cdc8cfa252ec045bc7c4ee230c85a83f8.exe	cb96be84d722c68fb65e3523c4e0043cdc8cfa252ec045bc7c4ee230c85a83f8.exe
PID 4608 wrote to memory of 4580	4608	cb96be84d722c68fb65e3523c4e0043cdc8cfa252ec045bc7c4ee230c85a83f8.exe	cb96be84d722c68fb65e3523c4e0043cdc8cfa252ec045bc7c4ee230c85a83f8.exe
PID 4608 wrote to memory of 4580	4608	cb96be84d722c68fb65e3523c4e0043cdc8cfa252ec045bc7c4ee230c85a83f8.exe	cb96be84d722c68fb65e3523c4e0043cdc8cfa252ec045bc7c4ee230c85a83f8.exe
PID 4608 wrote to memory of 4580	4608	cb96be84d722c68fb65e3523c4e0043cdc8cfa252ec045bc7c4ee230c85a83f8.exe	cb96be84d722c68fb65e3523c4e0043cdc8cfa252ec045bc7c4ee230c85a83f8.exe
PID 4608 wrote to memory of 4580	4608	cb96be84d722c68fb65e3523c4e0043cdc8cfa252ec045bc7c4ee230c85a83f8.exe	cb96be84d722c68fb65e3523c4e0043cdc8cfa252ec045bc7c4ee230c85a83f8.exe
PID 4608 wrote to memory of 4580	4608	cb96be84d722c68fb65e3523c4e0043cdc8cfa252ec045bc7c4ee230c85a83f8.exe	cb96be84d722c68fb65e3523c4e0043cdc8cfa252ec045bc7c4ee230c85a83f8.exe
PID 4608 wrote to memory of 4580	4608	cb96be84d722c68fb65e3523c4e0043cdc8cfa252ec045bc7c4ee230c85a83f8.exe	cb96be84d722c68fb65e3523c4e0043cdc8cfa252ec045bc7c4ee230c85a83f8.exe
PID 4608 wrote to memory of 4580	4608	cb96be84d722c68fb65e3523c4e0043cdc8cfa252ec045bc7c4ee230c85a83f8.exe	cb96be84d722c68fb65e3523c4e0043cdc8cfa252ec045bc7c4ee230c85a83f8.exe
PID 4608 wrote to memory of 4580	4608	cb96be84d722c68fb65e3523c4e0043cdc8cfa252ec045bc7c4ee230c85a83f8.exe	cb96be84d722c68fb65e3523c4e0043cdc8cfa252ec045bc7c4ee230c85a83f8.exe
PID 4608 wrote to memory of 4580	4608	cb96be84d722c68fb65e3523c4e0043cdc8cfa252ec045bc7c4ee230c85a83f8.exe	cb96be84d722c68fb65e3523c4e0043cdc8cfa252ec045bc7c4ee230c85a83f8.exe
PID 4608 wrote to memory of 4580	4608	cb96be84d722c68fb65e3523c4e0043cdc8cfa252ec045bc7c4ee230c85a83f8.exe	cb96be84d722c68fb65e3523c4e0043cdc8cfa252ec045bc7c4ee230c85a83f8.exe
PID 4608 wrote to memory of 4580	4608	cb96be84d722c68fb65e3523c4e0043cdc8cfa252ec045bc7c4ee230c85a83f8.exe	cb96be84d722c68fb65e3523c4e0043cdc8cfa252ec045bc7c4ee230c85a83f8.exe
PID 4608 wrote to memory of 4580	4608	cb96be84d722c68fb65e3523c4e0043cdc8cfa252ec045bc7c4ee230c85a83f8.exe	cb96be84d722c68fb65e3523c4e0043cdc8cfa252ec045bc7c4ee230c85a83f8.exe
PID 4608 wrote to memory of 4580	4608	cb96be84d722c68fb65e3523c4e0043cdc8cfa252ec045bc7c4ee230c85a83f8.exe	cb96be84d722c68fb65e3523c4e0043cdc8cfa252ec045bc7c4ee230c85a83f8.exe
PID 4580 wrote to memory of 1132	4580	cb96be84d722c68fb65e3523c4e0043cdc8cfa252ec045bc7c4ee230c85a83f8.exe	msdcsc.exe
PID 4580 wrote to memory of 1132	4580	cb96be84d722c68fb65e3523c4e0043cdc8cfa252ec045bc7c4ee230c85a83f8.exe	msdcsc.exe
PID 4580 wrote to memory of 1132	4580	cb96be84d722c68fb65e3523c4e0043cdc8cfa252ec045bc7c4ee230c85a83f8.exe	msdcsc.exe
PID 1132 wrote to memory of 2236	1132	msdcsc.exe	msdcsc.exe
PID 1132 wrote to memory of 2236	1132	msdcsc.exe	msdcsc.exe
PID 1132 wrote to memory of 2236	1132	msdcsc.exe	msdcsc.exe
PID 1132 wrote to memory of 2236	1132	msdcsc.exe	msdcsc.exe
PID 1132 wrote to memory of 2236	1132	msdcsc.exe	msdcsc.exe
PID 1132 wrote to memory of 2236	1132	msdcsc.exe	msdcsc.exe
PID 1132 wrote to memory of 2236	1132	msdcsc.exe	msdcsc.exe
PID 1132 wrote to memory of 2236	1132	msdcsc.exe	msdcsc.exe
PID 1132 wrote to memory of 2236	1132	msdcsc.exe	msdcsc.exe
PID 1132 wrote to memory of 2236	1132	msdcsc.exe	msdcsc.exe
PID 1132 wrote to memory of 2236	1132	msdcsc.exe	msdcsc.exe
PID 1132 wrote to memory of 2236	1132	msdcsc.exe	msdcsc.exe
PID 1132 wrote to memory of 2236	1132	msdcsc.exe	msdcsc.exe
PID 1132 wrote to memory of 2236	1132	msdcsc.exe	msdcsc.exe
PID 2236 wrote to memory of 4244	2236	msdcsc.exe	iexplore.exe
PID 2236 wrote to memory of 4244	2236	msdcsc.exe	iexplore.exe
PID 2236 wrote to memory of 4244	2236	msdcsc.exe	iexplore.exe
PID 2236 wrote to memory of 4244	2236	msdcsc.exe	iexplore.exe
PID 2236 wrote to memory of 4244	2236	msdcsc.exe	iexplore.exe
PID 4244 wrote to memory of 4872	4244	iexplore.exe	iexplore.exe
PID 4244 wrote to memory of 4872	4244	iexplore.exe	iexplore.exe
PID 4244 wrote to memory of 4872	4244	iexplore.exe	iexplore.exe
PID 4244 wrote to memory of 4872	4244	iexplore.exe	iexplore.exe

C:\Users\Admin\AppData\Local\Temp\cb96be84d722c68fb65e3523c4e0043cdc8cfa252ec045bc7c4ee230c85a83f8.exe
"C:\Users\Admin\AppData\Local\Temp\cb96be84d722c68fb65e3523c4e0043cdc8cfa252ec045bc7c4ee230c85a83f8.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4608

C:\Users\Admin\AppData\Local\Temp\cb96be84d722c68fb65e3523c4e0043cdc8cfa252ec045bc7c4ee230c85a83f8.exe
C:\Users\Admin\AppData\Local\Temp\cb96be84d722c68fb65e3523c4e0043cdc8cfa252ec045bc7c4ee230c85a83f8.exe
2⤵
- 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:4580

C:\MSDCSC\msdcsc.exe
"C:\MSDCSC\msdcsc.exe"
3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1132

C:\MSDCSC\msdcsc.exe
C:\MSDCSC\msdcsc.exe
4⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2236

C:\Program Files (x86)\Internet Explorer\iexplore.exe
"C:\Program Files (x86)\Internet Explorer\iexplore.exe"
5⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4244

C:\Program Files (x86)\Internet Explorer\iexplore.exe
"C:\Program Files (x86)\Internet Explorer\iexplore.exe"
6⤵
PID:4872

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 4872 -ip 4872
1⤵
PID:5100

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Winlogon Helper DLL

1

T1004

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\MSDCSC\msdcsc.exe
Filesize
738KB

MD5
5eb58198721d4ded363e41e243e685cc

SHA1
d3e349f052d215f392fbbdc657583d808fe51828

SHA256
cb96be84d722c68fb65e3523c4e0043cdc8cfa252ec045bc7c4ee230c85a83f8

SHA512
8fd1ee50b3cd82d8764f818a78fc3f4fca83a689a8927b856feca15a469eb9e32447902cfd819ddbf5b97fabcfbea2de2464c0304bb3f5e10ff1ebe26e7737b6

Download Submit
C:\MSDCSC\msdcsc.exe
Filesize
738KB

MD5
5eb58198721d4ded363e41e243e685cc

SHA1
d3e349f052d215f392fbbdc657583d808fe51828

SHA256
cb96be84d722c68fb65e3523c4e0043cdc8cfa252ec045bc7c4ee230c85a83f8

SHA512
8fd1ee50b3cd82d8764f818a78fc3f4fca83a689a8927b856feca15a469eb9e32447902cfd819ddbf5b97fabcfbea2de2464c0304bb3f5e10ff1ebe26e7737b6

Download Submit
C:\MSDCSC\msdcsc.exe
Filesize
738KB

MD5
5eb58198721d4ded363e41e243e685cc

SHA1
d3e349f052d215f392fbbdc657583d808fe51828

SHA256
cb96be84d722c68fb65e3523c4e0043cdc8cfa252ec045bc7c4ee230c85a83f8

SHA512
8fd1ee50b3cd82d8764f818a78fc3f4fca83a689a8927b856feca15a469eb9e32447902cfd819ddbf5b97fabcfbea2de2464c0304bb3f5e10ff1ebe26e7737b6

Download Submit
memory/1132-145-0x0000000000000000-mapping.dmp

Download
memory/1132-162-0x0000000000400000-0x0000000000565000-memory.dmp

Filesize
1.4MB

Download
memory/1132-148-0x0000000000400000-0x0000000000565000-memory.dmp

Filesize
1.4MB

Download
memory/2236-163-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2236-149-0x0000000000000000-mapping.dmp

Download
memory/4580-136-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/4580-142-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/4580-144-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/4580-140-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/4580-139-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/4580-138-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/4580-134-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/4580-133-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/4580-132-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/4580-131-0x0000000000000000-mapping.dmp

Download
memory/4608-143-0x0000000000400000-0x0000000000565000-memory.dmp

Filesize
1.4MB

Download
memory/4608-130-0x0000000000400000-0x0000000000565000-memory.dmp

Filesize
1.4MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads