dcrat | 877671c4a555e37e34c6b9ecab2cc958b28cc9617c6f53e3841a6386de180e19

Analysis

max time kernel
117s
max time network
147s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
19/01/2025, 07:51

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General

Target

3d213353948aba4d80c28823d8661951.exe
Size

1.8MB
MD5

3d213353948aba4d80c28823d8661951
SHA1

8c7dadac2ee5f348a8940ab47187b39fd025bead
SHA256

877671c4a555e37e34c6b9ecab2cc958b28cc9617c6f53e3841a6386de180e19
SHA512

36ba2c76563094e5c8248a05c088ad9c496573ccb6a9799759c38ef77f89e61b9832c617abc7322646c7c029ec8e573f82a4a1cc25b656bee5af82a188cab6c1
SSDEEP

24576:/r34Nhem94rOh31QzGpKHaHYSvvv22db+PowhGhomMJV4ynedX4QD/d5lBxdU7it:/I6g1AqY2v22pVfSJKyiXRd5lKu

Score

10^/10

dcrat discovery 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 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	2772	2176	schtasks.exe	31
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2912	2176	schtasks.exe	31
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2948	2176	schtasks.exe	31
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1100	2176	schtasks.exe	31
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2160	2176	schtasks.exe	31
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2964	2176	schtasks.exe	31
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2664	2176	schtasks.exe	31
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2592	2176	schtasks.exe	31
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3068	2176	schtasks.exe	31
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2388	2176	schtasks.exe	31
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1320	2176	schtasks.exe	31
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1704	2176	schtasks.exe	31
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2036	2176	schtasks.exe	31
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1824	2176	schtasks.exe	31
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2188	2176	schtasks.exe	31
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2024	2176	schtasks.exe	31
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1996	2176	schtasks.exe	31
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	864	2176	schtasks.exe	31

Executes dropped EXE 1 IoCs

pid	Process
1080	Idle.exe

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\Microsoft.NET\Idle.exe	3d213353948aba4d80c28823d8661951.exe
File created	C:\Program Files (x86)\Microsoft.NET\6ccacd8608530f	3d213353948aba4d80c28823d8661951.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\de-DE\services.exe	3d213353948aba4d80c28823d8661951.exe
File created	C:\Windows\de-DE\c5b4cb5e9653cc	3d213353948aba4d80c28823d8661951.exe

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

System Information Discovery
T1082

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
2676	PING.EXE

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2676	PING.EXE

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
2772	schtasks.exe
2948	schtasks.exe
2592	schtasks.exe
2388	schtasks.exe
2024	schtasks.exe
1824	schtasks.exe
1996	schtasks.exe
2912	schtasks.exe
2160	schtasks.exe
2964	schtasks.exe
1320	schtasks.exe
2036	schtasks.exe
2664	schtasks.exe
3068	schtasks.exe
1704	schtasks.exe
1100	schtasks.exe
2188	schtasks.exe
864	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2112	3d213353948aba4d80c28823d8661951.exe
2112	3d213353948aba4d80c28823d8661951.exe
2112	3d213353948aba4d80c28823d8661951.exe
2112	3d213353948aba4d80c28823d8661951.exe
2112	3d213353948aba4d80c28823d8661951.exe
2112	3d213353948aba4d80c28823d8661951.exe
2112	3d213353948aba4d80c28823d8661951.exe
2112	3d213353948aba4d80c28823d8661951.exe
2112	3d213353948aba4d80c28823d8661951.exe
2112	3d213353948aba4d80c28823d8661951.exe
2112	3d213353948aba4d80c28823d8661951.exe
2112	3d213353948aba4d80c28823d8661951.exe
2112	3d213353948aba4d80c28823d8661951.exe
2112	3d213353948aba4d80c28823d8661951.exe
2112	3d213353948aba4d80c28823d8661951.exe
2112	3d213353948aba4d80c28823d8661951.exe
2112	3d213353948aba4d80c28823d8661951.exe
2112	3d213353948aba4d80c28823d8661951.exe
2112	3d213353948aba4d80c28823d8661951.exe
2112	3d213353948aba4d80c28823d8661951.exe
2112	3d213353948aba4d80c28823d8661951.exe
2112	3d213353948aba4d80c28823d8661951.exe
2112	3d213353948aba4d80c28823d8661951.exe
2112	3d213353948aba4d80c28823d8661951.exe
2112	3d213353948aba4d80c28823d8661951.exe
2112	3d213353948aba4d80c28823d8661951.exe
2112	3d213353948aba4d80c28823d8661951.exe
2112	3d213353948aba4d80c28823d8661951.exe
2112	3d213353948aba4d80c28823d8661951.exe
2112	3d213353948aba4d80c28823d8661951.exe
2112	3d213353948aba4d80c28823d8661951.exe
2112	3d213353948aba4d80c28823d8661951.exe
2112	3d213353948aba4d80c28823d8661951.exe
2112	3d213353948aba4d80c28823d8661951.exe
2112	3d213353948aba4d80c28823d8661951.exe
2112	3d213353948aba4d80c28823d8661951.exe
2112	3d213353948aba4d80c28823d8661951.exe
2112	3d213353948aba4d80c28823d8661951.exe
2112	3d213353948aba4d80c28823d8661951.exe
2112	3d213353948aba4d80c28823d8661951.exe
2112	3d213353948aba4d80c28823d8661951.exe
2112	3d213353948aba4d80c28823d8661951.exe
2112	3d213353948aba4d80c28823d8661951.exe
2112	3d213353948aba4d80c28823d8661951.exe
2112	3d213353948aba4d80c28823d8661951.exe
2112	3d213353948aba4d80c28823d8661951.exe
2112	3d213353948aba4d80c28823d8661951.exe
2112	3d213353948aba4d80c28823d8661951.exe
2112	3d213353948aba4d80c28823d8661951.exe
2112	3d213353948aba4d80c28823d8661951.exe
2112	3d213353948aba4d80c28823d8661951.exe
2112	3d213353948aba4d80c28823d8661951.exe
2112	3d213353948aba4d80c28823d8661951.exe
2112	3d213353948aba4d80c28823d8661951.exe
2112	3d213353948aba4d80c28823d8661951.exe
1080	Idle.exe
1080	Idle.exe
1080	Idle.exe
1080	Idle.exe
1080	Idle.exe
1080	Idle.exe
1080	Idle.exe
1080	Idle.exe
1080	Idle.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2112	3d213353948aba4d80c28823d8661951.exe
Token: SeDebugPrivilege	1080	Idle.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2112 wrote to memory of 1428	2112	3d213353948aba4d80c28823d8661951.exe	50
PID 2112 wrote to memory of 1428	2112	3d213353948aba4d80c28823d8661951.exe	50
PID 2112 wrote to memory of 1428	2112	3d213353948aba4d80c28823d8661951.exe	50
PID 1428 wrote to memory of 1640	1428	cmd.exe	52
PID 1428 wrote to memory of 1640	1428	cmd.exe	52
PID 1428 wrote to memory of 1640	1428	cmd.exe	52
PID 1428 wrote to memory of 2676	1428	cmd.exe	53
PID 1428 wrote to memory of 2676	1428	cmd.exe	53
PID 1428 wrote to memory of 2676	1428	cmd.exe	53
PID 1428 wrote to memory of 1080	1428	cmd.exe	55
PID 1428 wrote to memory of 1080	1428	cmd.exe	55
PID 1428 wrote to memory of 1080	1428	cmd.exe	55

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\3d213353948aba4d80c28823d8661951.exe
"C:\Users\Admin\AppData\Local\Temp\3d213353948aba4d80c28823d8661951.exe"
1⤵
- Drops file in Program Files directory
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2112
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\8DQov0eSAS.bat"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1428
- - C:\Windows\system32\chcp.com
    chcp 65001
    3⤵
    PID:1640
- - C:\Windows\system32\PING.EXE
    ping -n 10 localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:2676
- - C:\Program Files (x86)\Microsoft.NET\Idle.exe
    "C:\Program Files (x86)\Microsoft.NET\Idle.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1080

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "lsml" /sc MINUTE /mo 14 /tr "'C:\Users\All Users\Desktop\lsm.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2772

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "lsm" /sc ONLOGON /tr "'C:\Users\All Users\Desktop\lsm.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2912

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "lsml" /sc MINUTE /mo 13 /tr "'C:\Users\All Users\Desktop\lsm.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2948

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "IdleI" /sc MINUTE /mo 10 /tr "'C:\Program Files (x86)\Microsoft.NET\Idle.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1100

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "Idle" /sc ONLOGON /tr "'C:\Program Files (x86)\Microsoft.NET\Idle.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 "IdleI" /sc MINUTE /mo 7 /tr "'C:\Program Files (x86)\Microsoft.NET\Idle.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2964

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "servicess" /sc MINUTE /mo 12 /tr "'C:\Windows\de-DE\services.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2592

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "services" /sc ONLOGON /tr "'C:\Windows\de-DE\services.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2664

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "servicess" /sc MINUTE /mo 8 /tr "'C:\Windows\de-DE\services.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3068

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "explorere" /sc MINUTE /mo 8 /tr "'C:\Users\Admin\explorer.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2388

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "explorer" /sc ONLOGON /tr "'C:\Users\Admin\explorer.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1320

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "explorere" /sc MINUTE /mo 6 /tr "'C:\Users\Admin\explorer.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1704

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "spoolsvs" /sc MINUTE /mo 13 /tr "'C:\MSOCache\All Users\spoolsv.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2036

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "spoolsv" /sc ONLOGON /tr "'C:\MSOCache\All Users\spoolsv.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1824

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "spoolsvs" /sc MINUTE /mo 14 /tr "'C:\MSOCache\All Users\spoolsv.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2188

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "3d213353948aba4d80c28823d86619513" /sc MINUTE /mo 5 /tr "'C:\Users\Admin\AppData\Local\Temp\3d213353948aba4d80c28823d8661951.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2024

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "3d213353948aba4d80c28823d8661951" /sc ONLOGON /tr "'C:\Users\Admin\AppData\Local\Temp\3d213353948aba4d80c28823d8661951.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1996

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "3d213353948aba4d80c28823d86619513" /sc MINUTE /mo 5 /tr "'C:\Users\Admin\AppData\Local\Temp\3d213353948aba4d80c28823d8661951.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:864

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

Remote System Discovery

T1018

System Information Discovery

T1082

System Network Configuration Discovery

T1016

Internet Connection Discovery

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\8DQov0eSAS.bat

Filesize
173B

MD5
62f515305225600b91ad2f92018aa525

SHA1
3839e03c85195288d7484ddbed2e944dd6ddb116

SHA256
39bde120874723b0ba659183330ac588e098b5063286cbbd5cec30ed109d6f0e

SHA512
92a1452d3481ae31fce9d62d62748bb1ad1398c3060660c214defc1f3d3b13b90f4a0b4cbc557d5bd87c0b385dc05e72ed728455c157dfa2200570b3b795f906

Download Submit
C:\Users\Public\Desktop\lsm.exe

Filesize
1.8MB

MD5
3d213353948aba4d80c28823d8661951

SHA1
8c7dadac2ee5f348a8940ab47187b39fd025bead

SHA256
877671c4a555e37e34c6b9ecab2cc958b28cc9617c6f53e3841a6386de180e19

SHA512
36ba2c76563094e5c8248a05c088ad9c496573ccb6a9799759c38ef77f89e61b9832c617abc7322646c7c029ec8e573f82a4a1cc25b656bee5af82a188cab6c1

Download Submit
memory/1080-37-0x0000000000C10000-0x0000000000DEE000-memory.dmp

Filesize
1.9MB

Download
memory/2112-11-0x000007FEF5FD0000-0x000007FEF69BC000-memory.dmp

Filesize
9.9MB

Download
memory/2112-12-0x000007FEF5FD0000-0x000007FEF69BC000-memory.dmp

Filesize
9.9MB

Download
memory/2112-6-0x0000000002020000-0x000000000202E000-memory.dmp

Filesize
56KB

Download
memory/2112-7-0x000007FEF5FD0000-0x000007FEF69BC000-memory.dmp

Filesize
9.9MB

Download
memory/2112-10-0x000007FEF5FD0000-0x000007FEF69BC000-memory.dmp

Filesize
9.9MB

Download
memory/2112-0-0x000007FEF5FD3000-0x000007FEF5FD4000-memory.dmp

Filesize
4KB

Download
memory/2112-14-0x0000000002180000-0x0000000002198000-memory.dmp

Filesize
96KB

Download
memory/2112-4-0x000007FEF5FD0000-0x000007FEF69BC000-memory.dmp

Filesize
9.9MB

Download
memory/2112-9-0x0000000002160000-0x000000000217C000-memory.dmp

Filesize
112KB

Download
memory/2112-16-0x0000000002030000-0x000000000203E000-memory.dmp

Filesize
56KB

Download
memory/2112-17-0x000007FEF5FD0000-0x000007FEF69BC000-memory.dmp

Filesize
9.9MB

Download
memory/2112-3-0x000007FEF5FD0000-0x000007FEF69BC000-memory.dmp

Filesize
9.9MB

Download
memory/2112-2-0x000007FEF5FD0000-0x000007FEF69BC000-memory.dmp

Filesize
9.9MB

Download
memory/2112-34-0x000007FEF5FD0000-0x000007FEF69BC000-memory.dmp

Filesize
9.9MB

Download
memory/2112-1-0x00000000000D0000-0x00000000002AE000-memory.dmp

Filesize
1.9MB

Download