dcrat | 2c1c9222242148483befec88bb981d11b1736abe489f0005bd3a3d921329b772

General

Target

ec9c92645e4178fda49d0a3aecd70b39.exe
Size

315KB
MD5

ec9c92645e4178fda49d0a3aecd70b39
SHA1

ec0c8e353318c041da25c11c4d9cc593519137d8
SHA256

2c1c9222242148483befec88bb981d11b1736abe489f0005bd3a3d921329b772
SHA512

d96c7dfba3094507bd4e9d4ee23ae08c221f011131b2ba7ffa3b97edc0934e4056ebdb6623171bc9b52d77ddd9e34e265ea953cd1547b3c83703aece766c9a8f
SSDEEP

6144:2dsy2oo7KrfynB80ZhrabrFyA/5Txe0M/Lmld4pQdxTbkr9u:2P2N7KKS0ZXA/HF06dx8Z

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 24 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	1124	2240	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	668	2240	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2828	2240	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2952	2240	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2088	2240	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2732	2240	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2972	2240	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3068	2240	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2052	2240	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2780	2240	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2720	2240	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2776	2240	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2376	2240	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2604	2240	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1344	2240	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1796	2240	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2324	2240	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3028	2240	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1520	2240	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2964	2240	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3044	2240	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2544	2240	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2364	2240	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3016	2240	schtasks.exe	30

DCRat payload 3 IoCs

Detects payload of DCRat, commonly dropped by NSIS installers.

rat

resource	yara_rule
behavioral1/memory/2100-1-0x0000000000AB0000-0x0000000000B06000-memory.dmp	dcrat
behavioral1/files/0x000500000001a44d-11.dat	dcrat
behavioral1/memory/2288-25-0x00000000001E0000-0x0000000000236000-memory.dmp	dcrat

Executes dropped EXE 1 IoCs

pid	Process
2288	services.exe

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\v3.0\RedistList\services.exe	ec9c92645e4178fda49d0a3aecd70b39.exe
File created	C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\v3.0\RedistList\c5b4cb5e9653cc	ec9c92645e4178fda49d0a3aecd70b39.exe

Drops file in Windows directory 9 IoCs

description	ioc	Process
File opened for modification	C:\Windows\TAPI\lsass.exe	ec9c92645e4178fda49d0a3aecd70b39.exe
File created	C:\Windows\TAPI\6203df4a6bafc7	ec9c92645e4178fda49d0a3aecd70b39.exe
File created	C:\Windows\en-US\System.exe	ec9c92645e4178fda49d0a3aecd70b39.exe
File created	C:\Windows\LiveKernelReports\0a1fd5f707cd16	ec9c92645e4178fda49d0a3aecd70b39.exe
File created	C:\Windows\TAPI\lsass.exe	ec9c92645e4178fda49d0a3aecd70b39.exe
File created	C:\Windows\en-US\27d1bcfc3c54e0	ec9c92645e4178fda49d0a3aecd70b39.exe
File created	C:\Windows\Registration\CRMLog\System.exe	ec9c92645e4178fda49d0a3aecd70b39.exe
File created	C:\Windows\Registration\CRMLog\27d1bcfc3c54e0	ec9c92645e4178fda49d0a3aecd70b39.exe
File created	C:\Windows\LiveKernelReports\sppsvc.exe	ec9c92645e4178fda49d0a3aecd70b39.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 24 IoCs

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

persistence execution

Scheduled Task

T1053.005

pid	Process
2828	schtasks.exe
2952	schtasks.exe
2720	schtasks.exe
1344	schtasks.exe
3016	schtasks.exe
668	schtasks.exe
2972	schtasks.exe
2052	schtasks.exe
2780	schtasks.exe
2964	schtasks.exe
3044	schtasks.exe
3068	schtasks.exe
2604	schtasks.exe
1520	schtasks.exe
2544	schtasks.exe
3028	schtasks.exe
1124	schtasks.exe
2088	schtasks.exe
2732	schtasks.exe
2776	schtasks.exe
2376	schtasks.exe
1796	schtasks.exe
2324	schtasks.exe
2364	schtasks.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2100	ec9c92645e4178fda49d0a3aecd70b39.exe
2288	services.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2100	ec9c92645e4178fda49d0a3aecd70b39.exe
Token: SeDebugPrivilege	2288	services.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2100 wrote to memory of 2288	2100	ec9c92645e4178fda49d0a3aecd70b39.exe	55
PID 2100 wrote to memory of 2288	2100	ec9c92645e4178fda49d0a3aecd70b39.exe	55
PID 2100 wrote to memory of 2288	2100	ec9c92645e4178fda49d0a3aecd70b39.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\ec9c92645e4178fda49d0a3aecd70b39.exe
"C:\Users\Admin\AppData\Local\Temp\ec9c92645e4178fda49d0a3aecd70b39.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:2100
- C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\v3.0\RedistList\services.exe
  "C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\v3.0\RedistList\services.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2288

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "lsassl" /sc MINUTE /mo 8 /tr "'C:\Windows\TAPI\lsass.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1124

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "lsass" /sc ONLOGON /tr "'C:\Windows\TAPI\lsass.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:668

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "lsassl" /sc MINUTE /mo 7 /tr "'C:\Windows\TAPI\lsass.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2828

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SystemS" /sc MINUTE /mo 14 /tr "'C:\Recovery\31f19e42-8726-11ef-be9a-dab21757c799\System.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2952

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "System" /sc ONLOGON /tr "'C:\Recovery\31f19e42-8726-11ef-be9a-dab21757c799\System.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2088

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SystemS" /sc MINUTE /mo 14 /tr "'C:\Recovery\31f19e42-8726-11ef-be9a-dab21757c799\System.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2732

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SystemS" /sc MINUTE /mo 14 /tr "'C:\Windows\en-US\System.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2972

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "System" /sc ONLOGON /tr "'C:\Windows\en-US\System.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 "SystemS" /sc MINUTE /mo 11 /tr "'C:\Windows\en-US\System.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2052

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 6 /tr "'C:\Users\Default\Desktop\dwm.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2780

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dwm" /sc ONLOGON /tr "'C:\Users\Default\Desktop\dwm.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2720

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 12 /tr "'C:\Users\Default\Desktop\dwm.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2776

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SystemS" /sc MINUTE /mo 9 /tr "'C:\Windows\Registration\CRMLog\System.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2376

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "System" /sc ONLOGON /tr "'C:\Windows\Registration\CRMLog\System.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2604

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SystemS" /sc MINUTE /mo 11 /tr "'C:\Windows\Registration\CRMLog\System.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1344

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "spoolsvs" /sc MINUTE /mo 14 /tr "'C:\MSOCache\All Users\spoolsv.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1796

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:2324

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:3028

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "servicess" /sc MINUTE /mo 11 /tr "'C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\v3.0\RedistList\services.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1520

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "services" /sc ONLOGON /tr "'C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\v3.0\RedistList\services.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 8 /tr "'C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\v3.0\RedistList\services.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3044

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "sppsvcs" /sc MINUTE /mo 9 /tr "'C:\Windows\LiveKernelReports\sppsvc.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2544

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "sppsvc" /sc ONLOGON /tr "'C:\Windows\LiveKernelReports\sppsvc.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2364

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "sppsvcs" /sc MINUTE /mo 11 /tr "'C:\Windows\LiveKernelReports\sppsvc.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3016

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\Registration\CRMLog\System.exe

Filesize
315KB

MD5
ec9c92645e4178fda49d0a3aecd70b39

SHA1
ec0c8e353318c041da25c11c4d9cc593519137d8

SHA256
2c1c9222242148483befec88bb981d11b1736abe489f0005bd3a3d921329b772

SHA512
d96c7dfba3094507bd4e9d4ee23ae08c221f011131b2ba7ffa3b97edc0934e4056ebdb6623171bc9b52d77ddd9e34e265ea953cd1547b3c83703aece766c9a8f

Download Submit
memory/2100-0-0x000007FEF6183000-0x000007FEF6184000-memory.dmp

Filesize
4KB

Download
memory/2100-1-0x0000000000AB0000-0x0000000000B06000-memory.dmp

Filesize
344KB

Download
memory/2100-2-0x000007FEF6180000-0x000007FEF6B6C000-memory.dmp

Filesize
9.9MB

Download
memory/2100-26-0x000007FEF6180000-0x000007FEF6B6C000-memory.dmp

Filesize
9.9MB

Download
memory/2288-25-0x00000000001E0000-0x0000000000236000-memory.dmp

Filesize
344KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads