dcrat | 877671c4a555e37e34c6b9ecab2cc958b28cc9617c6f53e3841a6386de180e19

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
19/01/2025, 08:05

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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 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	4900	2860	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1172	2860	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4112	2860	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1416	2860	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1420	2860	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	508	2860	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4536	2860	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3636	2860	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3984	2860	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4028	2860	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2832	2860	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1528	2860	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1212	2860	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3112	2860	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4808	2860	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4704	2860	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	220	2860	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4020	2860	schtasks.exe	83

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-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	3d213353948aba4d80c28823d8661951.exe

Executes dropped EXE 1 IoCs

pid	Process
3908	spoolsv.exe

Drops file in Program Files directory 6 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\Mozilla Maintenance Service\55b276f4edf653	3d213353948aba4d80c28823d8661951.exe
File created	C:\Program Files (x86)\Windows Defender\it-IT\spoolsv.exe	3d213353948aba4d80c28823d8661951.exe
File created	C:\Program Files (x86)\Windows Defender\it-IT\f3b6ecef712a24	3d213353948aba4d80c28823d8661951.exe
File created	C:\Program Files (x86)\Microsoft\EdgeUpdate_bk\winlogon.exe	3d213353948aba4d80c28823d8661951.exe
File created	C:\Program Files (x86)\Microsoft\EdgeUpdate_bk\cc11b995f2a76d	3d213353948aba4d80c28823d8661951.exe
File created	C:\Program Files (x86)\Mozilla Maintenance Service\StartMenuExperienceHost.exe	3d213353948aba4d80c28823d8661951.exe

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

System Information Discovery
T1082

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000_Classes\Local Settings	3d213353948aba4d80c28823d8661951.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
3636	schtasks.exe
3984	schtasks.exe
4028	schtasks.exe
1528	schtasks.exe
3112	schtasks.exe
1416	schtasks.exe
1420	schtasks.exe
4536	schtasks.exe
2832	schtasks.exe
1212	schtasks.exe
220	schtasks.exe
4900	schtasks.exe
1172	schtasks.exe
4704	schtasks.exe
4112	schtasks.exe
508	schtasks.exe
4808	schtasks.exe
4020	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2544	3d213353948aba4d80c28823d8661951.exe
2544	3d213353948aba4d80c28823d8661951.exe
2544	3d213353948aba4d80c28823d8661951.exe
2544	3d213353948aba4d80c28823d8661951.exe
2544	3d213353948aba4d80c28823d8661951.exe
2544	3d213353948aba4d80c28823d8661951.exe
2544	3d213353948aba4d80c28823d8661951.exe
2544	3d213353948aba4d80c28823d8661951.exe
2544	3d213353948aba4d80c28823d8661951.exe
2544	3d213353948aba4d80c28823d8661951.exe
2544	3d213353948aba4d80c28823d8661951.exe
2544	3d213353948aba4d80c28823d8661951.exe
2544	3d213353948aba4d80c28823d8661951.exe
2544	3d213353948aba4d80c28823d8661951.exe
2544	3d213353948aba4d80c28823d8661951.exe
2544	3d213353948aba4d80c28823d8661951.exe
2544	3d213353948aba4d80c28823d8661951.exe
2544	3d213353948aba4d80c28823d8661951.exe
2544	3d213353948aba4d80c28823d8661951.exe
2544	3d213353948aba4d80c28823d8661951.exe
2544	3d213353948aba4d80c28823d8661951.exe
2544	3d213353948aba4d80c28823d8661951.exe
2544	3d213353948aba4d80c28823d8661951.exe
2544	3d213353948aba4d80c28823d8661951.exe
2544	3d213353948aba4d80c28823d8661951.exe
2544	3d213353948aba4d80c28823d8661951.exe
2544	3d213353948aba4d80c28823d8661951.exe
2544	3d213353948aba4d80c28823d8661951.exe
2544	3d213353948aba4d80c28823d8661951.exe
2544	3d213353948aba4d80c28823d8661951.exe
2544	3d213353948aba4d80c28823d8661951.exe
2544	3d213353948aba4d80c28823d8661951.exe
2544	3d213353948aba4d80c28823d8661951.exe
2544	3d213353948aba4d80c28823d8661951.exe
2544	3d213353948aba4d80c28823d8661951.exe
2544	3d213353948aba4d80c28823d8661951.exe
2544	3d213353948aba4d80c28823d8661951.exe
2544	3d213353948aba4d80c28823d8661951.exe
2544	3d213353948aba4d80c28823d8661951.exe
2544	3d213353948aba4d80c28823d8661951.exe
2544	3d213353948aba4d80c28823d8661951.exe
2544	3d213353948aba4d80c28823d8661951.exe
2544	3d213353948aba4d80c28823d8661951.exe
2544	3d213353948aba4d80c28823d8661951.exe
2544	3d213353948aba4d80c28823d8661951.exe
2544	3d213353948aba4d80c28823d8661951.exe
2544	3d213353948aba4d80c28823d8661951.exe
2544	3d213353948aba4d80c28823d8661951.exe
2544	3d213353948aba4d80c28823d8661951.exe
2544	3d213353948aba4d80c28823d8661951.exe
2544	3d213353948aba4d80c28823d8661951.exe
2544	3d213353948aba4d80c28823d8661951.exe
2544	3d213353948aba4d80c28823d8661951.exe
2544	3d213353948aba4d80c28823d8661951.exe
2544	3d213353948aba4d80c28823d8661951.exe
2544	3d213353948aba4d80c28823d8661951.exe
2544	3d213353948aba4d80c28823d8661951.exe
2544	3d213353948aba4d80c28823d8661951.exe
2544	3d213353948aba4d80c28823d8661951.exe
2544	3d213353948aba4d80c28823d8661951.exe
2544	3d213353948aba4d80c28823d8661951.exe
2544	3d213353948aba4d80c28823d8661951.exe
2544	3d213353948aba4d80c28823d8661951.exe
2544	3d213353948aba4d80c28823d8661951.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2544	3d213353948aba4d80c28823d8661951.exe
Token: SeDebugPrivilege	3908	spoolsv.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2544 wrote to memory of 1588	2544	3d213353948aba4d80c28823d8661951.exe	102
PID 2544 wrote to memory of 1588	2544	3d213353948aba4d80c28823d8661951.exe	102
PID 1588 wrote to memory of 2532	1588	cmd.exe	104
PID 1588 wrote to memory of 2532	1588	cmd.exe	104
PID 1588 wrote to memory of 2800	1588	cmd.exe	105
PID 1588 wrote to memory of 2800	1588	cmd.exe	105
PID 1588 wrote to memory of 3908	1588	cmd.exe	107
PID 1588 wrote to memory of 3908	1588	cmd.exe	107

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⤵
- Checks computer location settings
- Drops file in Program Files directory
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2544
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\fXGEX6A4dX.bat"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1588
- - C:\Windows\system32\chcp.com
    chcp 65001
    3⤵
    PID:2532
- - C:\Windows\system32\w32tm.exe
    w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
    3⤵
    PID:2800
- - C:\Program Files (x86)\Windows Defender\it-IT\spoolsv.exe
    "C:\Program Files (x86)\Windows Defender\it-IT\spoolsv.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:3908

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "StartMenuExperienceHostS" /sc MINUTE /mo 7 /tr "'C:\Program Files (x86)\Mozilla Maintenance Service\StartMenuExperienceHost.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4900

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "StartMenuExperienceHost" /sc ONLOGON /tr "'C:\Program Files (x86)\Mozilla Maintenance Service\StartMenuExperienceHost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1172

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "StartMenuExperienceHostS" /sc MINUTE /mo 8 /tr "'C:\Program Files (x86)\Mozilla Maintenance Service\StartMenuExperienceHost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4112

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "winlogonw" /sc MINUTE /mo 6 /tr "'C:\Program Files (x86)\Microsoft\EdgeUpdate_bk\winlogon.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1416

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "winlogon" /sc ONLOGON /tr "'C:\Program Files (x86)\Microsoft\EdgeUpdate_bk\winlogon.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1420

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "winlogonw" /sc MINUTE /mo 13 /tr "'C:\Program Files (x86)\Microsoft\EdgeUpdate_bk\winlogon.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:508

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "smsss" /sc MINUTE /mo 11 /tr "'C:\Windows\Temp\MsEdgeCrashpad\reports\smss.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4536

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "smss" /sc ONLOGON /tr "'C:\Windows\Temp\MsEdgeCrashpad\reports\smss.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3636

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "smsss" /sc MINUTE /mo 6 /tr "'C:\Windows\Temp\MsEdgeCrashpad\reports\smss.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3984

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "spoolsvs" /sc MINUTE /mo 6 /tr "'C:\Program Files (x86)\Windows Defender\it-IT\spoolsv.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4028

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "spoolsv" /sc ONLOGON /tr "'C:\Program Files (x86)\Windows Defender\it-IT\spoolsv.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2832

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "spoolsvs" /sc MINUTE /mo 9 /tr "'C:\Program Files (x86)\Windows Defender\it-IT\spoolsv.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1528

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "unsecappu" /sc MINUTE /mo 12 /tr "'C:\Users\Default\Start Menu\unsecapp.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1212

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "unsecapp" /sc ONLOGON /tr "'C:\Users\Default\Start Menu\unsecapp.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3112

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "unsecappu" /sc MINUTE /mo 11 /tr "'C:\Users\Default\Start Menu\unsecapp.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4808

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "3d213353948aba4d80c28823d86619513" /sc MINUTE /mo 7 /tr "'C:\Users\Admin\AppData\Local\Temp\3d213353948aba4d80c28823d8661951.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4704

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:220

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "3d213353948aba4d80c28823d86619513" /sc MINUTE /mo 14 /tr "'C:\Users\Admin\AppData\Local\Temp\3d213353948aba4d80c28823d8661951.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4020

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

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Downloads

C:\Program Files (x86)\Mozilla Maintenance Service\StartMenuExperienceHost.exe

Filesize
1.8MB

MD5
3d213353948aba4d80c28823d8661951

SHA1
8c7dadac2ee5f348a8940ab47187b39fd025bead

SHA256
877671c4a555e37e34c6b9ecab2cc958b28cc9617c6f53e3841a6386de180e19

SHA512
36ba2c76563094e5c8248a05c088ad9c496573ccb6a9799759c38ef77f89e61b9832c617abc7322646c7c029ec8e573f82a4a1cc25b656bee5af82a188cab6c1

Download Submit
C:\Users\Admin\AppData\Local\Temp\fXGEX6A4dX.bat

Filesize
233B

MD5
b2cc767fa223ed3a82b55537a7366ad9

SHA1
3976af751b74cd1d085da5c3b6065c908042e772

SHA256
eee81322c0fa730d76db735c244fb0a56ceca8ba9400d6ad952c7e4f98cba1a1

SHA512
f48fa1941cec237ecba183dd8cc6a9ff7f81bdb4beca9ab9f6c5270c2f0a7d08a0dd78288e5473f43f0d48bb1f8cbca3bcfe4818b1ac533f924674f7ec91ffe1

Download Submit
memory/2544-11-0x000000001BF60000-0x000000001BFB0000-memory.dmp

Filesize
320KB

Download
memory/2544-15-0x000000001BDA0000-0x000000001BDAE000-memory.dmp

Filesize
56KB

Download
memory/2544-4-0x00007FF9E2CE0000-0x00007FF9E37A1000-memory.dmp

Filesize
10.8MB

Download
memory/2544-6-0x000000001BD90000-0x000000001BD9E000-memory.dmp

Filesize
56KB

Download
memory/2544-7-0x00007FF9E2CE0000-0x00007FF9E37A1000-memory.dmp

Filesize
10.8MB

Download
memory/2544-10-0x00007FF9E2CE0000-0x00007FF9E37A1000-memory.dmp

Filesize
10.8MB

Download
memory/2544-0-0x00007FF9E2CE3000-0x00007FF9E2CE5000-memory.dmp

Filesize
8KB

Download
memory/2544-13-0x000000001BDE0000-0x000000001BDF8000-memory.dmp

Filesize
96KB

Download
memory/2544-9-0x000000001BDC0000-0x000000001BDDC000-memory.dmp

Filesize
112KB

Download
memory/2544-3-0x00007FF9E2CE0000-0x00007FF9E37A1000-memory.dmp

Filesize
10.8MB

Download
memory/2544-16-0x00007FF9E2CE0000-0x00007FF9E37A1000-memory.dmp

Filesize
10.8MB

Download
memory/2544-18-0x00007FF9E2CE0000-0x00007FF9E37A1000-memory.dmp

Filesize
10.8MB

Download
memory/2544-2-0x00007FF9E2CE0000-0x00007FF9E37A1000-memory.dmp

Filesize
10.8MB

Download
memory/2544-29-0x00007FF9E2CE0000-0x00007FF9E37A1000-memory.dmp

Filesize
10.8MB

Download
memory/2544-33-0x00007FF9E2CE0000-0x00007FF9E37A1000-memory.dmp

Filesize
10.8MB

Download
memory/2544-36-0x00007FF9E2CE0000-0x00007FF9E37A1000-memory.dmp

Filesize
10.8MB

Download
memory/2544-1-0x0000000000FC0000-0x000000000119E000-memory.dmp

Filesize
1.9MB

Download