dcrat | dd16f7cc4746193b2976567db0d2d584a5027ee7a84532a0d937b55ab1a6b8a6

General

Target

90e289ec47b4928d52b7112812a02814.exe
Size

1.2MB
MD5

90e289ec47b4928d52b7112812a02814
SHA1

f557de05746d7c22664c5919269c4ba508633887
SHA256

dd16f7cc4746193b2976567db0d2d584a5027ee7a84532a0d937b55ab1a6b8a6
SHA512

214400ce98489b7ca011b12aca9c85a12d15f774d4a12c2c42d0a8203db4104b6d12f5c3b02ba269b1a719ffcd75e0c85c347248e3384f6bc39ec553bb89bba2
SSDEEP

24576:qzQllN3bTfSMnKX/gdJ9FMdoV2LQB9adKOVSpKKoCPD:vtzaCBUdKUSpKde

Score

10^/10

dcrat infostealer rat

Malware Config

Signatures

DcRat
DarkCrystal(DC) is a new .NET RAT active since June 2019 capable of loading additional plugins.
rat infostealer dcrat
Dcrat family
dcrat

Process spawned unexpected child process 6 IoCs

This typically indicates the parent process was compromised via an exploit or macro.

description	pid	pid_target	Process	procid_target
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2408	2236	schtasks.exe	82
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1608	2236	schtasks.exe	82
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	64	2236	schtasks.exe	82
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4264	2236	schtasks.exe	82
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2908	2236	schtasks.exe	82
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2188	2236	schtasks.exe	82

DCRat payload 2 IoCs

Detects payload of DCRat, commonly dropped by NSIS installers.

rat

resource	yara_rule
behavioral2/memory/1656-1-0x0000000000C50000-0x0000000000D92000-memory.dmp	dcrat
behavioral2/files/0x0007000000023daa-14.dat	dcrat

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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1290774215-692483676-1419523182-1000\Control Panel\International\Geo\Nation	90e289ec47b4928d52b7112812a02814.exe

Executes dropped EXE 1 IoCs

pid	Process
1708	SearchApp.exe

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

System Information Discovery
T1082

Scheduled Task/Job: Scheduled Task 1 TTPs 6 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
64	schtasks.exe
4264	schtasks.exe
2908	schtasks.exe
2188	schtasks.exe
2408	schtasks.exe
1608	schtasks.exe

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
1656	90e289ec47b4928d52b7112812a02814.exe
1708	SearchApp.exe
1708	SearchApp.exe
1708	SearchApp.exe
1708	SearchApp.exe
1708	SearchApp.exe
1708	SearchApp.exe
1708	SearchApp.exe
1708	SearchApp.exe
1708	SearchApp.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1656	90e289ec47b4928d52b7112812a02814.exe
Token: SeDebugPrivilege	1708	SearchApp.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 1656 wrote to memory of 1708	1656	90e289ec47b4928d52b7112812a02814.exe	90
PID 1656 wrote to memory of 1708	1656	90e289ec47b4928d52b7112812a02814.exe	90

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\90e289ec47b4928d52b7112812a02814.exe
"C:\Users\Admin\AppData\Local\Temp\90e289ec47b4928d52b7112812a02814.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1656
- C:\Users\Admin\Videos\SearchApp.exe
  "C:\Users\Admin\Videos\SearchApp.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1708

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 12 /tr "'C:\Users\Admin\Saved Games\csrss.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2408

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\Users\Admin\Saved Games\csrss.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1608

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 13 /tr "'C:\Users\Admin\Saved Games\csrss.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:64

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SearchAppS" /sc MINUTE /mo 12 /tr "'C:\Users\Admin\Videos\SearchApp.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4264

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SearchApp" /sc ONLOGON /tr "'C:\Users\Admin\Videos\SearchApp.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2908

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SearchAppS" /sc MINUTE /mo 13 /tr "'C:\Users\Admin\Videos\SearchApp.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2188

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\Videos\SearchApp.exe

Filesize
1.2MB

MD5
90e289ec47b4928d52b7112812a02814

SHA1
f557de05746d7c22664c5919269c4ba508633887

SHA256
dd16f7cc4746193b2976567db0d2d584a5027ee7a84532a0d937b55ab1a6b8a6

SHA512
214400ce98489b7ca011b12aca9c85a12d15f774d4a12c2c42d0a8203db4104b6d12f5c3b02ba269b1a719ffcd75e0c85c347248e3384f6bc39ec553bb89bba2

Download Submit
memory/1656-0-0x00007FF8E83F3000-0x00007FF8E83F5000-memory.dmp

Filesize
8KB

Download
memory/1656-1-0x0000000000C50000-0x0000000000D92000-memory.dmp

Filesize
1.3MB

Download
memory/1656-2-0x00007FF8E83F0000-0x00007FF8E8EB1000-memory.dmp

Filesize
10.8MB

Download
memory/1656-3-0x0000000002E00000-0x0000000002E0E000-memory.dmp

Filesize
56KB

Download
memory/1656-6-0x000000001B8D0000-0x000000001B8E6000-memory.dmp

Filesize
88KB

Download
memory/1656-5-0x000000001B950000-0x000000001B9A0000-memory.dmp

Filesize
320KB

Download
memory/1656-7-0x0000000002F40000-0x0000000002F4C000-memory.dmp

Filesize
48KB

Download
memory/1656-4-0x0000000002F20000-0x0000000002F3C000-memory.dmp

Filesize
112KB

Download
memory/1656-23-0x00007FF8E83F0000-0x00007FF8E8EB1000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads