dcrat | b90b75dcc06003408ea406424ae16179137d2a39d2092d26c25677122479ed72

Analysis

max time kernel
145s
max time network
148s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
10-01-2025 01:16

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General

Target

95ce095073ce57e823674de34b621cdb.exe
Size

2.3MB
MD5

95ce095073ce57e823674de34b621cdb
SHA1

129a46af1ad0ad1a15f6f3df3e1ee5e1147ae004
SHA256

b90b75dcc06003408ea406424ae16179137d2a39d2092d26c25677122479ed72
SHA512

e16251a67637a09771d3962fca4fa92ac5f58483cff8cbf29c94f0eb0237f30deed49036a724cff32b0942715334865c2bb06084fefb0872551181c8e6accb28
SSDEEP

49152:bSrudTH6WUww8iz704mELP36hEgMMFzFOIh:GrudTHu0ivwELP38MMhFOIh

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 27 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	2912	2180	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2672	2180	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3060	2180	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2792	2180	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2804	2180	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2712	2180	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2252	2180	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2748	2180	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2884	2180	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2756	2180	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2328	2180	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2596	2180	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2704	2180	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3000	2180	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	528	2180	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	828	2180	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1480	2180	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1656	2180	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2012	2180	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1848	2180	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1512	2180	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	352	2180	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2404	2180	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	464	2180	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2388	2180	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	840	2180	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1968	2180	schtasks.exe	30

DCRat payload 3 IoCs

Detects payload of DCRat, commonly dropped by NSIS installers.

rat

resource	yara_rule
behavioral1/memory/2260-1-0x0000000000140000-0x0000000000390000-memory.dmp	dcrat
behavioral1/files/0x0006000000017487-17.dat	dcrat
behavioral1/memory/1772-33-0x0000000000080000-0x00000000002D0000-memory.dmp	dcrat

Executes dropped EXE 1 IoCs

pid	Process
1772	OSPPSVC.exe

Drops file in Program Files directory 6 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\Mozilla Maintenance Service\logs\0a1fd5f707cd16	95ce095073ce57e823674de34b621cdb.exe
File created	C:\Program Files\Java\jdk1.7.0_80\bin\OSPPSVC.exe	95ce095073ce57e823674de34b621cdb.exe
File created	C:\Program Files\Java\jdk1.7.0_80\bin\1610b97d3ab4a7	95ce095073ce57e823674de34b621cdb.exe
File created	C:\Program Files\Windows Defender\de-DE\smss.exe	95ce095073ce57e823674de34b621cdb.exe
File created	C:\Program Files\Windows Defender\de-DE\69ddcba757bf72	95ce095073ce57e823674de34b621cdb.exe
File created	C:\Program Files (x86)\Mozilla Maintenance Service\logs\sppsvc.exe	95ce095073ce57e823674de34b621cdb.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 27 IoCs

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

persistence execution

Scheduled Task

T1053.005

pid	Process
352	schtasks.exe
2792	schtasks.exe
2804	schtasks.exe
528	schtasks.exe
1848	schtasks.exe
2712	schtasks.exe
1512	schtasks.exe
840	schtasks.exe
2596	schtasks.exe
2012	schtasks.exe
3060	schtasks.exe
2884	schtasks.exe
2756	schtasks.exe
2704	schtasks.exe
1968	schtasks.exe
2912	schtasks.exe
2748	schtasks.exe
2328	schtasks.exe
1656	schtasks.exe
3000	schtasks.exe
828	schtasks.exe
2388	schtasks.exe
2672	schtasks.exe
2252	schtasks.exe
2404	schtasks.exe
1480	schtasks.exe
464	schtasks.exe

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
2260	95ce095073ce57e823674de34b621cdb.exe
1772	OSPPSVC.exe
1772	OSPPSVC.exe
1772	OSPPSVC.exe
1772	OSPPSVC.exe
1772	OSPPSVC.exe
1772	OSPPSVC.exe
1772	OSPPSVC.exe
1772	OSPPSVC.exe
1772	OSPPSVC.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1772	OSPPSVC.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2260	95ce095073ce57e823674de34b621cdb.exe
Token: SeDebugPrivilege	1772	OSPPSVC.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2260 wrote to memory of 1772	2260	95ce095073ce57e823674de34b621cdb.exe	58
PID 2260 wrote to memory of 1772	2260	95ce095073ce57e823674de34b621cdb.exe	58
PID 2260 wrote to memory of 1772	2260	95ce095073ce57e823674de34b621cdb.exe	58

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\95ce095073ce57e823674de34b621cdb.exe
"C:\Users\Admin\AppData\Local\Temp\95ce095073ce57e823674de34b621cdb.exe"
1⤵
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2260
- C:\Users\Default\OSPPSVC.exe
  "C:\Users\Default\OSPPSVC.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  PID:1772

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "lsassl" /sc MINUTE /mo 14 /tr "'C:\Recovery\1f4ba082-69f6-11ef-a143-62cb582c238c\lsass.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2912

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "lsass" /sc ONLOGON /tr "'C:\Recovery\1f4ba082-69f6-11ef-a143-62cb582c238c\lsass.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2672

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "lsassl" /sc MINUTE /mo 10 /tr "'C:\Recovery\1f4ba082-69f6-11ef-a143-62cb582c238c\lsass.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3060

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "winlogonw" /sc MINUTE /mo 12 /tr "'C:\Recovery\1f4ba082-69f6-11ef-a143-62cb582c238c\winlogon.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2792

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "winlogon" /sc ONLOGON /tr "'C:\Recovery\1f4ba082-69f6-11ef-a143-62cb582c238c\winlogon.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2804

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "winlogonw" /sc MINUTE /mo 13 /tr "'C:\Recovery\1f4ba082-69f6-11ef-a143-62cb582c238c\winlogon.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2712

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "OSPPSVCO" /sc MINUTE /mo 8 /tr "'C:\Program Files\Java\jdk1.7.0_80\bin\OSPPSVC.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2252

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "OSPPSVC" /sc ONLOGON /tr "'C:\Program Files\Java\jdk1.7.0_80\bin\OSPPSVC.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2748

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "OSPPSVCO" /sc MINUTE /mo 12 /tr "'C:\Program Files\Java\jdk1.7.0_80\bin\OSPPSVC.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2884

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "smsss" /sc MINUTE /mo 7 /tr "'C:\Program Files\Windows Defender\de-DE\smss.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2756

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "smss" /sc ONLOGON /tr "'C:\Program Files\Windows Defender\de-DE\smss.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2328

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "smsss" /sc MINUTE /mo 5 /tr "'C:\Program Files\Windows Defender\de-DE\smss.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2596

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "sppsvcs" /sc MINUTE /mo 12 /tr "'C:\Program Files (x86)\Mozilla Maintenance Service\logs\sppsvc.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2704

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "sppsvc" /sc ONLOGON /tr "'C:\Program Files (x86)\Mozilla Maintenance Service\logs\sppsvc.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3000

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "sppsvcs" /sc MINUTE /mo 11 /tr "'C:\Program Files (x86)\Mozilla Maintenance Service\logs\sppsvc.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:528

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "lsassl" /sc MINUTE /mo 5 /tr "'C:\Recovery\1f4ba082-69f6-11ef-a143-62cb582c238c\lsass.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:828

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "lsass" /sc ONLOGON /tr "'C:\Recovery\1f4ba082-69f6-11ef-a143-62cb582c238c\lsass.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1480

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "lsassl" /sc MINUTE /mo 7 /tr "'C:\Recovery\1f4ba082-69f6-11ef-a143-62cb582c238c\lsass.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1656

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "winlogonw" /sc MINUTE /mo 10 /tr "'C:\Recovery\1f4ba082-69f6-11ef-a143-62cb582c238c\winlogon.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2012

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "winlogon" /sc ONLOGON /tr "'C:\Recovery\1f4ba082-69f6-11ef-a143-62cb582c238c\winlogon.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1848

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "winlogonw" /sc MINUTE /mo 11 /tr "'C:\Recovery\1f4ba082-69f6-11ef-a143-62cb582c238c\winlogon.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1512

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "audiodga" /sc MINUTE /mo 11 /tr "'C:\Recovery\1f4ba082-69f6-11ef-a143-62cb582c238c\audiodg.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:352

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "audiodg" /sc ONLOGON /tr "'C:\Recovery\1f4ba082-69f6-11ef-a143-62cb582c238c\audiodg.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2404

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "audiodga" /sc MINUTE /mo 5 /tr "'C:\Recovery\1f4ba082-69f6-11ef-a143-62cb582c238c\audiodg.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:464

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "OSPPSVCO" /sc MINUTE /mo 11 /tr "'C:\Users\Default\OSPPSVC.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2388

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "OSPPSVC" /sc ONLOGON /tr "'C:\Users\Default\OSPPSVC.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:840

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "OSPPSVCO" /sc MINUTE /mo 10 /tr "'C:\Users\Default\OSPPSVC.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1968

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\logs\sppsvc.exe

Filesize
2.3MB

MD5
95ce095073ce57e823674de34b621cdb

SHA1
129a46af1ad0ad1a15f6f3df3e1ee5e1147ae004

SHA256
b90b75dcc06003408ea406424ae16179137d2a39d2092d26c25677122479ed72

SHA512
e16251a67637a09771d3962fca4fa92ac5f58483cff8cbf29c94f0eb0237f30deed49036a724cff32b0942715334865c2bb06084fefb0872551181c8e6accb28

Download Submit
memory/1772-35-0x00000000003A0000-0x00000000003B2000-memory.dmp

Filesize
72KB

Download
memory/1772-33-0x0000000000080000-0x00000000002D0000-memory.dmp

Filesize
2.3MB

Download
memory/2260-3-0x0000000000430000-0x000000000044C000-memory.dmp

Filesize
112KB

Download
memory/2260-4-0x0000000000450000-0x0000000000466000-memory.dmp

Filesize
88KB

Download
memory/2260-5-0x0000000000470000-0x00000000004C6000-memory.dmp

Filesize
344KB

Download
memory/2260-6-0x0000000000410000-0x0000000000422000-memory.dmp

Filesize
72KB

Download
memory/2260-7-0x00000000004E0000-0x00000000004EE000-memory.dmp

Filesize
56KB

Download
memory/2260-8-0x0000000000870000-0x0000000000878000-memory.dmp

Filesize
32KB

Download
memory/2260-0-0x000007FEF5CD3000-0x000007FEF5CD4000-memory.dmp

Filesize
4KB

Download
memory/2260-2-0x000007FEF5CD0000-0x000007FEF66BC000-memory.dmp

Filesize
9.9MB

Download
memory/2260-34-0x000007FEF5CD0000-0x000007FEF66BC000-memory.dmp

Filesize
9.9MB

Download
memory/2260-1-0x0000000000140000-0x0000000000390000-memory.dmp

Filesize
2.3MB

Download