dcrat | 894a461e0d709023ba6ec45f748b38a79ae12cf398702244ef2ffa93dd644133

Analysis

max time kernel
122s
max time network
152s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
22/03/2025, 06:15

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General

Target

acab91c3e070c3fdc13dbdd5414d88bc3bf021b99c5d8e4ad291da68b701cc45.exe
Size

1.2MB
MD5

b72cb4fc6352f3c73d2ce44a6a7283cc
SHA1

820c462b9f86be10b3d36c9c9c18a79bdebac8cc
SHA256

acab91c3e070c3fdc13dbdd5414d88bc3bf021b99c5d8e4ad291da68b701cc45
SHA512

90455c4935e5436e76f3f99c95084fa77cdea33a058b6794971ff5bff3f45ab3005f9a97195916a42b2f1048534caed1cf7ab29067914dd84e5bd82b6c34eda3
SSDEEP

24576:B1QcHlC7WjMPqsBsOOJ6uFWn2uuJbWV99NOyWIbQ+/bRm:B1/ClPOJRWnZobk9ocQ+DR

Score

10^/10

dcrat infostealer rat spyware stealer

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 18 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	2920	2384	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2056	2384	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2864	2384	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2664	2384	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2808	2384	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2816	2384	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2644	2384	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2932	2384	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2568	2384	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3064	2384	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2708	2384	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2648	2384	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2552	2384	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2608	2384	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3020	2384	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3040	2384	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2504	2384	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1980	2384	schtasks.exe	30

DCRat payload 3 IoCs

Detects payload of DCRat, commonly dropped by NSIS installers.

rat

resource	yara_rule
behavioral19/memory/3052-1-0x0000000000CB0000-0x0000000000DE2000-memory.dmp	dcrat
behavioral19/files/0x000500000001a443-14.dat	dcrat
behavioral19/memory/2344-26-0x0000000000A40000-0x0000000000B72000-memory.dmp	dcrat

Executes dropped EXE 1 IoCs

pid	Process
2344	smss.exe

Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003

Drops file in Program Files directory 7 IoCs

description	ioc	Process
File created	C:\Program Files\Windows Portable Devices\69ddcba757bf72	acab91c3e070c3fdc13dbdd5414d88bc3bf021b99c5d8e4ad291da68b701cc45.exe
File created	C:\Program Files (x86)\Reference Assemblies\sppsvc.exe	acab91c3e070c3fdc13dbdd5414d88bc3bf021b99c5d8e4ad291da68b701cc45.exe
File opened for modification	C:\Program Files (x86)\Reference Assemblies\sppsvc.exe	acab91c3e070c3fdc13dbdd5414d88bc3bf021b99c5d8e4ad291da68b701cc45.exe
File created	C:\Program Files (x86)\Reference Assemblies\0a1fd5f707cd16	acab91c3e070c3fdc13dbdd5414d88bc3bf021b99c5d8e4ad291da68b701cc45.exe
File created	C:\Program Files (x86)\Windows Media Player\Network Sharing\csrss.exe	acab91c3e070c3fdc13dbdd5414d88bc3bf021b99c5d8e4ad291da68b701cc45.exe
File created	C:\Program Files (x86)\Windows Media Player\Network Sharing\886983d96e3d3e	acab91c3e070c3fdc13dbdd5414d88bc3bf021b99c5d8e4ad291da68b701cc45.exe
File created	C:\Program Files\Windows Portable Devices\smss.exe	acab91c3e070c3fdc13dbdd5414d88bc3bf021b99c5d8e4ad291da68b701cc45.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 18 IoCs

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

persistence execution

Scheduled Task

T1053.005

pid	Process
2816	schtasks.exe
2644	schtasks.exe
1980	schtasks.exe
2920	schtasks.exe
2056	schtasks.exe
2808	schtasks.exe
3064	schtasks.exe
2608	schtasks.exe
2664	schtasks.exe
2568	schtasks.exe
2708	schtasks.exe
2648	schtasks.exe
2864	schtasks.exe
2932	schtasks.exe
2552	schtasks.exe
3020	schtasks.exe
3040	schtasks.exe
2504	schtasks.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

pid	Process
3052	acab91c3e070c3fdc13dbdd5414d88bc3bf021b99c5d8e4ad291da68b701cc45.exe
2344	smss.exe
2344	smss.exe
2344	smss.exe
2344	smss.exe
2344	smss.exe
2344	smss.exe
2344	smss.exe
2344	smss.exe
2344	smss.exe
2344	smss.exe
2344	smss.exe
2344	smss.exe
2344	smss.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3052	acab91c3e070c3fdc13dbdd5414d88bc3bf021b99c5d8e4ad291da68b701cc45.exe
Token: SeDebugPrivilege	2344	smss.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 3052 wrote to memory of 1744	3052	acab91c3e070c3fdc13dbdd5414d88bc3bf021b99c5d8e4ad291da68b701cc45.exe	49
PID 3052 wrote to memory of 1744	3052	acab91c3e070c3fdc13dbdd5414d88bc3bf021b99c5d8e4ad291da68b701cc45.exe	49
PID 3052 wrote to memory of 1744	3052	acab91c3e070c3fdc13dbdd5414d88bc3bf021b99c5d8e4ad291da68b701cc45.exe	49
PID 1744 wrote to memory of 2000	1744	cmd.exe	51
PID 1744 wrote to memory of 2000	1744	cmd.exe	51
PID 1744 wrote to memory of 2000	1744	cmd.exe	51
PID 1744 wrote to memory of 2344	1744	cmd.exe	53
PID 1744 wrote to memory of 2344	1744	cmd.exe	53
PID 1744 wrote to memory of 2344	1744	cmd.exe	53

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\acab91c3e070c3fdc13dbdd5414d88bc3bf021b99c5d8e4ad291da68b701cc45.exe
"C:\Users\Admin\AppData\Local\Temp\acab91c3e070c3fdc13dbdd5414d88bc3bf021b99c5d8e4ad291da68b701cc45.exe"
1⤵
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3052
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\Jtvgn0Xmse.bat"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1744
- - C:\Windows\system32\w32tm.exe
    w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
    3⤵
    PID:2000
- - C:\Program Files\Windows Portable Devices\smss.exe
    "C:\Program Files\Windows Portable Devices\smss.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2344

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "sppsvcs" /sc MINUTE /mo 14 /tr "'C:\Program Files (x86)\Reference Assemblies\sppsvc.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2920

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "sppsvc" /sc ONLOGON /tr "'C:\Program Files (x86)\Reference Assemblies\sppsvc.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2056

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "sppsvcs" /sc MINUTE /mo 12 /tr "'C:\Program Files (x86)\Reference Assemblies\sppsvc.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2864

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "taskhostt" /sc MINUTE /mo 13 /tr "'C:\Users\Admin\taskhost.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2664

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "taskhost" /sc ONLOGON /tr "'C:\Users\Admin\taskhost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2808

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "taskhostt" /sc MINUTE /mo 11 /tr "'C:\Users\Admin\taskhost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2816

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "IdleI" /sc MINUTE /mo 11 /tr "'C:\Recovery\18fc4542-69f6-11ef-a46c-62cb582c238c\Idle.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2644

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "Idle" /sc ONLOGON /tr "'C:\Recovery\18fc4542-69f6-11ef-a46c-62cb582c238c\Idle.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2932

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "IdleI" /sc MINUTE /mo 7 /tr "'C:\Recovery\18fc4542-69f6-11ef-a46c-62cb582c238c\Idle.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2568

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 9 /tr "'C:\Program Files (x86)\Windows Media Player\Network Sharing\csrss.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3064

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\Program Files (x86)\Windows Media Player\Network Sharing\csrss.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2708

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 6 /tr "'C:\Program Files (x86)\Windows Media Player\Network Sharing\csrss.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2648

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "explorere" /sc MINUTE /mo 10 /tr "'C:\Users\Public\Documents\explorer.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2552

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "explorer" /sc ONLOGON /tr "'C:\Users\Public\Documents\explorer.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2608

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "explorere" /sc MINUTE /mo 5 /tr "'C:\Users\Public\Documents\explorer.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3020

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "smsss" /sc MINUTE /mo 6 /tr "'C:\Program Files\Windows Portable Devices\smss.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3040

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "smss" /sc ONLOGON /tr "'C:\Program Files\Windows Portable Devices\smss.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2504

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "smsss" /sc MINUTE /mo 5 /tr "'C:\Program Files\Windows Portable Devices\smss.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1980

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

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\Jtvgn0Xmse.bat

Filesize
215B

MD5
363c07757fb33995a451c031c224b101

SHA1
28d12e2277eebec2790c3108a34a80c029fa1cd5

SHA256
21baebb7b29299c37ca520f6af45b34ecc428e387bde1468f91d03926a3750ff

SHA512
a45915416ab74a06af128f6234410ca0b966d2b5579bef25ed8e394a484eab4b0977ff8b15ab6a6b7b78cd96146cf64a759ca132bb32bff6d8ab77326624366c

Download Submit
C:\Users\Public\Documents\explorer.exe

Filesize
1.2MB

MD5
b72cb4fc6352f3c73d2ce44a6a7283cc

SHA1
820c462b9f86be10b3d36c9c9c18a79bdebac8cc

SHA256
acab91c3e070c3fdc13dbdd5414d88bc3bf021b99c5d8e4ad291da68b701cc45

SHA512
90455c4935e5436e76f3f99c95084fa77cdea33a058b6794971ff5bff3f45ab3005f9a97195916a42b2f1048534caed1cf7ab29067914dd84e5bd82b6c34eda3

Download Submit
memory/2344-26-0x0000000000A40000-0x0000000000B72000-memory.dmp

Filesize
1.2MB

Download
memory/3052-0-0x000007FEF5B63000-0x000007FEF5B64000-memory.dmp

Filesize
4KB

Download
memory/3052-1-0x0000000000CB0000-0x0000000000DE2000-memory.dmp

Filesize
1.2MB

Download
memory/3052-2-0x000007FEF5B60000-0x000007FEF654C000-memory.dmp

Filesize
9.9MB

Download
memory/3052-3-0x00000000006F0000-0x000000000070C000-memory.dmp

Filesize
112KB

Download
memory/3052-4-0x0000000000C90000-0x0000000000CA6000-memory.dmp

Filesize
88KB

Download
memory/3052-5-0x0000000000710000-0x000000000071C000-memory.dmp

Filesize
48KB

Download
memory/3052-23-0x000007FEF5B60000-0x000007FEF654C000-memory.dmp

Filesize
9.9MB

Download