dcrat | ed0b363f62f90f473283536ad4c9854f7c2479111e3d0c5fa4407ace8515df77

Analysis

max time kernel
244s
max time network
158s
platform
windows7_x64
resource
win7-20231023-en
resource tags

arch:x64arch:x86image:win7-20231023-enlocale:en-usos:windows7-x64system
submitted
28/10/2023, 20:19

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General

Target

NEAS.f7d31ed8a4934e75ba942630685bf090.exe
Size

1.1MB
MD5

f7d31ed8a4934e75ba942630685bf090
SHA1

ec9ebd48e3a3111b3c4e91171da8465c267a6e44
SHA256

ed0b363f62f90f473283536ad4c9854f7c2479111e3d0c5fa4407ace8515df77
SHA512

aa3e71afcb5069ac6c22ddd98e165cc3b303ad4b8f9ae8f71e648d4023aa072b22319ba55b07fb7516dcdb5217ec68564965bc14a7f2abb9e1a27b1d396b01e6
SSDEEP

24576:aADdteLS1VO6wLVqq0aJSw69voIN7y7Di0:8E86MVX/SwHmf

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

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	2124	2488	schtasks.exe	28
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3028	2488	schtasks.exe	28
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1412	2488	schtasks.exe	28
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1648	2488	schtasks.exe	28
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2876	2488	schtasks.exe	28
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2728	2488	schtasks.exe	28
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2400	2488	schtasks.exe	28
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1772	2488	schtasks.exe	28
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1656	2488	schtasks.exe	28
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1860	2488	schtasks.exe	28
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	928	2488	schtasks.exe	28
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2856	2488	schtasks.exe	28
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	848	2488	schtasks.exe	28
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2864	2488	schtasks.exe	28
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2724	2488	schtasks.exe	28
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1388	2488	schtasks.exe	28
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2880	2488	schtasks.exe	28
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	560	2488	schtasks.exe	28
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1128	2488	schtasks.exe	28
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1152	2488	schtasks.exe	28
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	624	2488	schtasks.exe	28
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1644	2488	schtasks.exe	28
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	436	2488	schtasks.exe	28
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1620	2488	schtasks.exe	28
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1784	2488	schtasks.exe	28
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2036	2488	schtasks.exe	28
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	796	2488	schtasks.exe	28

DCRat payload 2 IoCs

Detects payload of DCRat, commonly dropped by NSIS installers.

rat

resource	yara_rule
behavioral1/memory/2652-0-0x0000000000CE0000-0x0000000000E0C000-memory.dmp	dcrat
behavioral1/files/0x000700000001531a-19.dat	dcrat

Drops file in Program Files directory 8 IoCs

description	ioc	Process
File opened for modification	C:\Program Files\DVD Maker\fr-FR\RCX7E2E.tmp	NEAS.f7d31ed8a4934e75ba942630685bf090.exe
File opened for modification	C:\Program Files\DVD Maker\fr-FR\sppsvc.exe	NEAS.f7d31ed8a4934e75ba942630685bf090.exe
File created	C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\NEAS.f7d31ed8a4934e75ba942630685bf090.exe	NEAS.f7d31ed8a4934e75ba942630685bf090.exe
File created	C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\c3f32625a801e6	NEAS.f7d31ed8a4934e75ba942630685bf090.exe
File created	C:\Program Files\DVD Maker\fr-FR\sppsvc.exe	NEAS.f7d31ed8a4934e75ba942630685bf090.exe
File created	C:\Program Files\DVD Maker\fr-FR\0a1fd5f707cd16	NEAS.f7d31ed8a4934e75ba942630685bf090.exe
File opened for modification	C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\RCX4A7E.tmp	NEAS.f7d31ed8a4934e75ba942630685bf090.exe
File opened for modification	C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\NEAS.f7d31ed8a4934e75ba942630685bf090.exe	NEAS.f7d31ed8a4934e75ba942630685bf090.exe

Creates scheduled task(s) 1 TTPs 27 IoCs

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

persistence

Scheduled Task/Job

T1053

pid	Process
1648	schtasks.exe
2864	schtasks.exe
2880	schtasks.exe
928	schtasks.exe
1644	schtasks.exe
2876	schtasks.exe
1656	schtasks.exe
848	schtasks.exe
1152	schtasks.exe
436	schtasks.exe
1784	schtasks.exe
2400	schtasks.exe
2856	schtasks.exe
1128	schtasks.exe
796	schtasks.exe
2124	schtasks.exe
1412	schtasks.exe
2724	schtasks.exe
624	schtasks.exe
1620	schtasks.exe
3028	schtasks.exe
1772	schtasks.exe
560	schtasks.exe
1388	schtasks.exe
2036	schtasks.exe
2728	schtasks.exe
1860	schtasks.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2652	NEAS.f7d31ed8a4934e75ba942630685bf090.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2652	NEAS.f7d31ed8a4934e75ba942630685bf090.exe

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\NEAS.f7d31ed8a4934e75ba942630685bf090.exe
"C:\Users\Admin\AppData\Local\Temp\NEAS.f7d31ed8a4934e75ba942630685bf090.exe"
1⤵
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2652

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "winlogonw" /sc MINUTE /mo 11 /tr "'C:\Users\Default\Recent\winlogon.exe'" /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:2124

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "winlogon" /sc ONLOGON /tr "'C:\Users\Default\Recent\winlogon.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:3028

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "winlogonw" /sc MINUTE /mo 7 /tr "'C:\Users\Default\Recent\winlogon.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:1412

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SystemS" /sc MINUTE /mo 11 /tr "'C:\Users\All Users\Microsoft\Search\Data\System.exe'" /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:1648

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "System" /sc ONLOGON /tr "'C:\Users\All Users\Microsoft\Search\Data\System.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:2876

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SystemS" /sc MINUTE /mo 10 /tr "'C:\Users\All Users\Microsoft\Search\Data\System.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:2728

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "spoolsvs" /sc MINUTE /mo 13 /tr "'C:\Users\All Users\Application Data\spoolsv.exe'" /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:2400

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "spoolsv" /sc ONLOGON /tr "'C:\Users\All Users\Application Data\spoolsv.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:1772

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "spoolsvs" /sc MINUTE /mo 13 /tr "'C:\Users\All Users\Application Data\spoolsv.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:1656

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "taskhost" /sc ONLOGON /tr "'C:\Recovery\14fb2242-720d-11ee-be72-ec26920784ed\taskhost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:1860

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "taskhostt" /sc MINUTE /mo 10 /tr "'C:\Recovery\14fb2242-720d-11ee-be72-ec26920784ed\taskhost.exe'" /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:928

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "taskhostt" /sc MINUTE /mo 7 /tr "'C:\Recovery\14fb2242-720d-11ee-be72-ec26920784ed\taskhost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:2856

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 12 /tr "'C:\Recovery\14fb2242-720d-11ee-be72-ec26920784ed\wininit.exe'" /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:848

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "wininit" /sc ONLOGON /tr "'C:\Recovery\14fb2242-720d-11ee-be72-ec26920784ed\wininit.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:2864

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 13 /tr "'C:\Recovery\14fb2242-720d-11ee-be72-ec26920784ed\wininit.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:2724

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "NEAS.f7d31ed8a4934e75ba942630685bf090N" /sc MINUTE /mo 9 /tr "'C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\NEAS.f7d31ed8a4934e75ba942630685bf090.exe'" /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:1388

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "NEAS.f7d31ed8a4934e75ba942630685bf090" /sc ONLOGON /tr "'C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\NEAS.f7d31ed8a4934e75ba942630685bf090.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:2880

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "NEAS.f7d31ed8a4934e75ba942630685bf090N" /sc MINUTE /mo 11 /tr "'C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\NEAS.f7d31ed8a4934e75ba942630685bf090.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:560

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SystemS" /sc MINUTE /mo 11 /tr "'C:\MSOCache\All Users\{90140000-0117-0409-0000-0000000FF1CE}-C\Access.en-us\System.exe'" /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:1128

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "System" /sc ONLOGON /tr "'C:\MSOCache\All Users\{90140000-0117-0409-0000-0000000FF1CE}-C\Access.en-us\System.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:1152

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SystemS" /sc MINUTE /mo 9 /tr "'C:\MSOCache\All Users\{90140000-0117-0409-0000-0000000FF1CE}-C\Access.en-us\System.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:624

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "IdleI" /sc MINUTE /mo 9 /tr "'C:\Users\Default\Idle.exe'" /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:1644

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "Idle" /sc ONLOGON /tr "'C:\Users\Default\Idle.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:436

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "IdleI" /sc MINUTE /mo 6 /tr "'C:\Users\Default\Idle.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:1620

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "sppsvcs" /sc MINUTE /mo 6 /tr "'C:\Program Files\DVD Maker\fr-FR\sppsvc.exe'" /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:1784

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "sppsvc" /sc ONLOGON /tr "'C:\Program Files\DVD Maker\fr-FR\sppsvc.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:2036

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "sppsvcs" /sc MINUTE /mo 12 /tr "'C:\Program Files\DVD Maker\fr-FR\sppsvc.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:796

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Persistence

Scheduled Task/Job

T1053

Privilege Escalation

Scheduled Task/Job

T1053

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Recovery\14fb2242-720d-11ee-be72-ec26920784ed\wininit.exe

Filesize
1.1MB

MD5
f7d31ed8a4934e75ba942630685bf090

SHA1
ec9ebd48e3a3111b3c4e91171da8465c267a6e44

SHA256
ed0b363f62f90f473283536ad4c9854f7c2479111e3d0c5fa4407ace8515df77

SHA512
aa3e71afcb5069ac6c22ddd98e165cc3b303ad4b8f9ae8f71e648d4023aa072b22319ba55b07fb7516dcdb5217ec68564965bc14a7f2abb9e1a27b1d396b01e6

Download Submit
memory/2652-0-0x0000000000CE0000-0x0000000000E0C000-memory.dmp

Filesize
1.2MB

Download
memory/2652-1-0x000007FEF52A0000-0x000007FEF5C8C000-memory.dmp

Filesize
9.9MB

Download
memory/2652-2-0x000007FEF52A0000-0x000007FEF5C8C000-memory.dmp

Filesize
9.9MB

Download
memory/2652-3-0x000000001A930000-0x000000001A9B0000-memory.dmp

Filesize
512KB

Download
memory/2652-4-0x0000000000430000-0x000000000044C000-memory.dmp

Filesize
112KB

Download
memory/2652-5-0x0000000000450000-0x0000000000460000-memory.dmp

Filesize
64KB

Download
memory/2652-6-0x0000000000580000-0x0000000000596000-memory.dmp

Filesize
88KB

Download
memory/2652-7-0x0000000000460000-0x0000000000472000-memory.dmp

Filesize
72KB

Download
memory/2652-8-0x00000000005C0000-0x00000000005CA000-memory.dmp

Filesize
40KB

Download
memory/2652-9-0x00000000005D0000-0x00000000005DE000-memory.dmp

Filesize
56KB

Download
memory/2652-14-0x000000001A930000-0x000000001A9B0000-memory.dmp

Filesize
512KB

Download