dcrat | 5b72b675d312dc805dcd399812e636e3f27fd1814975f9906daccb1f64e86762

Analysis

max time kernel
95s
max time network
130s
platform
windows10-2004_x64
resource
win10v2004-20250129-en
resource tags

arch:x64arch:x86image:win10v2004-20250129-enlocale:en-usos:windows10-2004-x64system
submitted
01-02-2025 23:33

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Report Analysis Logs

General

Target

5b72b675d312dc805dcd399812e636e3f27fd1814975f9906daccb1f64e86762.exe
Size

827KB
MD5

ee9f2d79c47d1d8f5e12135af3b6e51b
SHA1

05f8199fdf6946c81239af918b51a03ccb6e8ef2
SHA256

5b72b675d312dc805dcd399812e636e3f27fd1814975f9906daccb1f64e86762
SHA512

5146db40a9e977a352ed4b25684ca65b21b0716e9b0f55d06d94c2af8dae80ace1036588e34c7dcc489b148255ba0a3a916581eb525cdea2984d3ef4c5ad9305
SSDEEP

12288:+PjbkdQsEdvdRDnB0WmNN3D+nvIsmnxkmt7IxcC1AE:+rbQQsE9WWmNNz+wpxlyxcMAE

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 30 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	1036	5040	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2372	5040	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2784	5040	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2344	5040	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3164	5040	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3604	5040	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2896	5040	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1412	5040	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3536	5040	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4940	5040	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3980	5040	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4860	5040	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	60	5040	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	828	5040	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3480	5040	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4304	5040	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2160	5040	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3524	5040	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2428	5040	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2512	5040	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2128	5040	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3748	5040	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2476	5040	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4900	5040	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4736	5040	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1972	5040	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	64	5040	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1880	5040	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3268	5040	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2184	5040	schtasks.exe	83

DCRat payload 2 IoCs

Detects payload of DCRat, commonly dropped by NSIS installers.

rat

resource	yara_rule
behavioral2/memory/1068-1-0x0000000000D70000-0x0000000000E46000-memory.dmp	dcrat
behavioral2/files/0x0007000000023c5b-11.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-1-5-21-1121399784-3202166597-3503557106-1000\Control Panel\International\Geo\Nation	5b72b675d312dc805dcd399812e636e3f27fd1814975f9906daccb1f64e86762.exe

Executes dropped EXE 1 IoCs

pid	Process
4984	dllhost.exe

Drops file in Program Files directory 12 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\Idle.exe	5b72b675d312dc805dcd399812e636e3f27fd1814975f9906daccb1f64e86762.exe
File created	C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\6ccacd8608530f	5b72b675d312dc805dcd399812e636e3f27fd1814975f9906daccb1f64e86762.exe
File created	C:\Program Files\Reference Assemblies\Microsoft\Framework\dllhost.exe	5b72b675d312dc805dcd399812e636e3f27fd1814975f9906daccb1f64e86762.exe
File created	C:\Program Files (x86)\Internet Explorer\smss.exe	5b72b675d312dc805dcd399812e636e3f27fd1814975f9906daccb1f64e86762.exe
File created	C:\Program Files (x86)\Internet Explorer\69ddcba757bf72	5b72b675d312dc805dcd399812e636e3f27fd1814975f9906daccb1f64e86762.exe
File created	C:\Program Files\VideoLAN\VLC\e6c9b481da804f	5b72b675d312dc805dcd399812e636e3f27fd1814975f9906daccb1f64e86762.exe
File created	C:\Program Files\Reference Assemblies\Microsoft\Framework\5940a34987c991	5b72b675d312dc805dcd399812e636e3f27fd1814975f9906daccb1f64e86762.exe
File created	C:\Program Files (x86)\Internet Explorer\en-US\OfficeClickToRun.exe	5b72b675d312dc805dcd399812e636e3f27fd1814975f9906daccb1f64e86762.exe
File created	C:\Program Files (x86)\Internet Explorer\en-US\e6c9b481da804f	5b72b675d312dc805dcd399812e636e3f27fd1814975f9906daccb1f64e86762.exe
File created	C:\Program Files\WindowsPowerShell\Modules\fontdrvhost.exe	5b72b675d312dc805dcd399812e636e3f27fd1814975f9906daccb1f64e86762.exe
File created	C:\Program Files\WindowsPowerShell\Modules\5b884080fd4f94	5b72b675d312dc805dcd399812e636e3f27fd1814975f9906daccb1f64e86762.exe
File created	C:\Program Files\VideoLAN\VLC\OfficeClickToRun.exe	5b72b675d312dc805dcd399812e636e3f27fd1814975f9906daccb1f64e86762.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 30 IoCs

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

persistence execution

Scheduled Task

T1053.005

pid	Process
828	schtasks.exe
2160	schtasks.exe
4900	schtasks.exe
2784	schtasks.exe
2344	schtasks.exe
4860	schtasks.exe
1036	schtasks.exe
3604	schtasks.exe
2476	schtasks.exe
1972	schtasks.exe
4304	schtasks.exe
2512	schtasks.exe
2184	schtasks.exe
4940	schtasks.exe
3980	schtasks.exe
1880	schtasks.exe
3268	schtasks.exe
1412	schtasks.exe
3536	schtasks.exe
2128	schtasks.exe
3748	schtasks.exe
2896	schtasks.exe
3524	schtasks.exe
64	schtasks.exe
2372	schtasks.exe
60	schtasks.exe
2428	schtasks.exe
4736	schtasks.exe
3164	schtasks.exe
3480	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
1068	5b72b675d312dc805dcd399812e636e3f27fd1814975f9906daccb1f64e86762.exe
1068	5b72b675d312dc805dcd399812e636e3f27fd1814975f9906daccb1f64e86762.exe
1068	5b72b675d312dc805dcd399812e636e3f27fd1814975f9906daccb1f64e86762.exe
1068	5b72b675d312dc805dcd399812e636e3f27fd1814975f9906daccb1f64e86762.exe
1068	5b72b675d312dc805dcd399812e636e3f27fd1814975f9906daccb1f64e86762.exe
1068	5b72b675d312dc805dcd399812e636e3f27fd1814975f9906daccb1f64e86762.exe
1068	5b72b675d312dc805dcd399812e636e3f27fd1814975f9906daccb1f64e86762.exe
1068	5b72b675d312dc805dcd399812e636e3f27fd1814975f9906daccb1f64e86762.exe
4984	dllhost.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1068	5b72b675d312dc805dcd399812e636e3f27fd1814975f9906daccb1f64e86762.exe
Token: SeDebugPrivilege	4984	dllhost.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 1068 wrote to memory of 4984	1068	5b72b675d312dc805dcd399812e636e3f27fd1814975f9906daccb1f64e86762.exe	116
PID 1068 wrote to memory of 4984	1068	5b72b675d312dc805dcd399812e636e3f27fd1814975f9906daccb1f64e86762.exe	116

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\5b72b675d312dc805dcd399812e636e3f27fd1814975f9906daccb1f64e86762.exe
"C:\Users\Admin\AppData\Local\Temp\5b72b675d312dc805dcd399812e636e3f27fd1814975f9906daccb1f64e86762.exe"
1⤵
- Checks computer location settings
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1068
- C:\Program Files\Reference Assemblies\Microsoft\Framework\dllhost.exe
  "C:\Program Files\Reference Assemblies\Microsoft\Framework\dllhost.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4984

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "lsassl" /sc MINUTE /mo 14 /tr "'C:\Recovery\WindowsRE\lsass.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1036

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "lsass" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\lsass.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2372

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "lsassl" /sc MINUTE /mo 6 /tr "'C:\Recovery\WindowsRE\lsass.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2784

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "fontdrvhostf" /sc MINUTE /mo 5 /tr "'C:\Program Files\WindowsPowerShell\Modules\fontdrvhost.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2344

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "fontdrvhost" /sc ONLOGON /tr "'C:\Program Files\WindowsPowerShell\Modules\fontdrvhost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3164

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "fontdrvhostf" /sc MINUTE /mo 8 /tr "'C:\Program Files\WindowsPowerShell\Modules\fontdrvhost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3604

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "sihosts" /sc MINUTE /mo 12 /tr "'C:\Users\All Users\sihost.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2896

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "sihost" /sc ONLOGON /tr "'C:\Users\All Users\sihost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1412

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "sihosts" /sc MINUTE /mo 7 /tr "'C:\Users\All Users\sihost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3536

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "OfficeClickToRunO" /sc MINUTE /mo 12 /tr "'C:\Program Files\VideoLAN\VLC\OfficeClickToRun.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4940

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "OfficeClickToRun" /sc ONLOGON /tr "'C:\Program Files\VideoLAN\VLC\OfficeClickToRun.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3980

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "OfficeClickToRunO" /sc MINUTE /mo 9 /tr "'C:\Program Files\VideoLAN\VLC\OfficeClickToRun.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4860

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 5 /tr "'C:\Program Files\Reference Assemblies\Microsoft\Framework\dllhost.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:60

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dllhost" /sc ONLOGON /tr "'C:\Program Files\Reference Assemblies\Microsoft\Framework\dllhost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:828

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 10 /tr "'C:\Program Files\Reference Assemblies\Microsoft\Framework\dllhost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3480

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "winlogonw" /sc MINUTE /mo 6 /tr "'C:\Users\Default User\winlogon.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4304

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "winlogon" /sc ONLOGON /tr "'C:\Users\Default User\winlogon.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2160

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "winlogonw" /sc MINUTE /mo 12 /tr "'C:\Users\Default User\winlogon.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3524

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "smsss" /sc MINUTE /mo 7 /tr "'C:\Program Files (x86)\Internet Explorer\smss.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2428

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "smss" /sc ONLOGON /tr "'C:\Program Files (x86)\Internet Explorer\smss.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2512

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "smsss" /sc MINUTE /mo 11 /tr "'C:\Program Files (x86)\Internet Explorer\smss.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2128

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 11 /tr "'C:\Users\All Users\RuntimeBroker.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3748

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "RuntimeBroker" /sc ONLOGON /tr "'C:\Users\All Users\RuntimeBroker.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2476

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 6 /tr "'C:\Users\All Users\RuntimeBroker.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4900

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "OfficeClickToRunO" /sc MINUTE /mo 14 /tr "'C:\Program Files (x86)\Internet Explorer\en-US\OfficeClickToRun.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4736

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "OfficeClickToRun" /sc ONLOGON /tr "'C:\Program Files (x86)\Internet Explorer\en-US\OfficeClickToRun.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1972

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "OfficeClickToRunO" /sc MINUTE /mo 6 /tr "'C:\Program Files (x86)\Internet Explorer\en-US\OfficeClickToRun.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 "IdleI" /sc MINUTE /mo 10 /tr "'C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\Idle.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1880

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "Idle" /sc ONLOGON /tr "'C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\Idle.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3268

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "IdleI" /sc MINUTE /mo 13 /tr "'C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\Idle.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2184

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Program Files\Reference Assemblies\Microsoft\Framework\dllhost.exe

Filesize
827KB

MD5
ee9f2d79c47d1d8f5e12135af3b6e51b

SHA1
05f8199fdf6946c81239af918b51a03ccb6e8ef2

SHA256
5b72b675d312dc805dcd399812e636e3f27fd1814975f9906daccb1f64e86762

SHA512
5146db40a9e977a352ed4b25684ca65b21b0716e9b0f55d06d94c2af8dae80ace1036588e34c7dcc489b148255ba0a3a916581eb525cdea2984d3ef4c5ad9305

Download Submit
memory/1068-0-0x00007FFE75BF3000-0x00007FFE75BF5000-memory.dmp

Filesize
8KB

Download
memory/1068-1-0x0000000000D70000-0x0000000000E46000-memory.dmp

Filesize
856KB

Download
memory/1068-4-0x00007FFE75BF0000-0x00007FFE766B1000-memory.dmp

Filesize
10.8MB

Download
memory/1068-34-0x00007FFE75BF0000-0x00007FFE766B1000-memory.dmp

Filesize
10.8MB

Download