dcrat | 8fe2dc79406633301e735531a3ba11b1136838ccfb21ab149b06115f36ee3243

General

Target

8fe2dc79406633301e735531a3ba11b1136838ccfb21ab149b06115f36ee3243.exe
Size

828KB
MD5

18b132b3bb8258358bbef60b2807923c
SHA1

1a6dea54b8dbaafc894c426425f3f207fa7df156
SHA256

8fe2dc79406633301e735531a3ba11b1136838ccfb21ab149b06115f36ee3243
SHA512

fc909490a131af1d724253bacbb44d516460190725e5f2d742ce0c53568cb3499ef5fb541b6ecc99ebe5a3a04f6636d4423305579fee17e2f108e884e6335964
SSDEEP

12288:3PrWRdiFHcEtCJpDod8Guj/ban6rBPgNrCDbAz8zckbh:3PrfF8EteW8GujM6YIz3V

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	2960	2788	schtasks.exe	29
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2816	2788	schtasks.exe	29
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2944	2788	schtasks.exe	29
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2840	2788	schtasks.exe	29
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2976	2788	schtasks.exe	29
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3016	2788	schtasks.exe	29
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2712	2788	schtasks.exe	29
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2656	2788	schtasks.exe	29
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2688	2788	schtasks.exe	29
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2368	2788	schtasks.exe	29
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1468	2788	schtasks.exe	29
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2132	2788	schtasks.exe	29
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2720	2788	schtasks.exe	29
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	900	2788	schtasks.exe	29
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2092	2788	schtasks.exe	29
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2532	2788	schtasks.exe	29
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1640	2788	schtasks.exe	29
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2028	2788	schtasks.exe	29

DCRat payload 3 IoCs

Detects payload of DCRat, commonly dropped by NSIS installers.

rat

resource	yara_rule
behavioral1/memory/2348-1-0x0000000000A40000-0x0000000000B16000-memory.dmp	dcrat
behavioral1/files/0x000500000001a4b5-11.dat	dcrat
behavioral1/memory/3004-23-0x0000000000EC0000-0x0000000000F96000-memory.dmp	dcrat

Executes dropped EXE 1 IoCs

pid	Process
3004	Idle.exe

Drops file in Program Files directory 5 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\Internet Explorer\csrss.exe	8fe2dc79406633301e735531a3ba11b1136838ccfb21ab149b06115f36ee3243.exe
File opened for modification	C:\Program Files (x86)\Internet Explorer\csrss.exe	8fe2dc79406633301e735531a3ba11b1136838ccfb21ab149b06115f36ee3243.exe
File created	C:\Program Files (x86)\Internet Explorer\886983d96e3d3e	8fe2dc79406633301e735531a3ba11b1136838ccfb21ab149b06115f36ee3243.exe
File created	C:\Program Files (x86)\Google\Temp\WmiPrvSE.exe	8fe2dc79406633301e735531a3ba11b1136838ccfb21ab149b06115f36ee3243.exe
File created	C:\Program Files (x86)\Google\Temp\24dbde2999530e	8fe2dc79406633301e735531a3ba11b1136838ccfb21ab149b06115f36ee3243.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 18 IoCs

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

persistence execution

Scheduled Task

T1053.005

pid	Process
2816	schtasks.exe
2092	schtasks.exe
2944	schtasks.exe
2976	schtasks.exe
2712	schtasks.exe
2656	schtasks.exe
2132	schtasks.exe
1640	schtasks.exe
2028	schtasks.exe
2960	schtasks.exe
2840	schtasks.exe
3016	schtasks.exe
2688	schtasks.exe
2720	schtasks.exe
2532	schtasks.exe
2368	schtasks.exe
1468	schtasks.exe
900	schtasks.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2348	8fe2dc79406633301e735531a3ba11b1136838ccfb21ab149b06115f36ee3243.exe
3004	Idle.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2348	8fe2dc79406633301e735531a3ba11b1136838ccfb21ab149b06115f36ee3243.exe
Token: SeDebugPrivilege	3004	Idle.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2348 wrote to memory of 2176	2348	8fe2dc79406633301e735531a3ba11b1136838ccfb21ab149b06115f36ee3243.exe	48
PID 2348 wrote to memory of 2176	2348	8fe2dc79406633301e735531a3ba11b1136838ccfb21ab149b06115f36ee3243.exe	48
PID 2348 wrote to memory of 2176	2348	8fe2dc79406633301e735531a3ba11b1136838ccfb21ab149b06115f36ee3243.exe	48
PID 2176 wrote to memory of 2888	2176	cmd.exe	50
PID 2176 wrote to memory of 2888	2176	cmd.exe	50
PID 2176 wrote to memory of 2888	2176	cmd.exe	50
PID 2176 wrote to memory of 3004	2176	cmd.exe	51
PID 2176 wrote to memory of 3004	2176	cmd.exe	51
PID 2176 wrote to memory of 3004	2176	cmd.exe	51

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\8fe2dc79406633301e735531a3ba11b1136838ccfb21ab149b06115f36ee3243.exe
"C:\Users\Admin\AppData\Local\Temp\8fe2dc79406633301e735531a3ba11b1136838ccfb21ab149b06115f36ee3243.exe"
1⤵
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2348
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\qNwTt2I68S.bat"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2176
- - C:\Windows\system32\w32tm.exe
    w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
    3⤵
    PID:2888
- - C:\Recovery\3a99bb82-4e15-11ef-8354-cae67966b5f6\Idle.exe
    "C:\Recovery\3a99bb82-4e15-11ef-8354-cae67966b5f6\Idle.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:3004

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 9 /tr "'C:\Program Files (x86)\Internet Explorer\csrss.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2960

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\Program Files (x86)\Internet Explorer\csrss.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2816

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 6 /tr "'C:\Program Files (x86)\Internet Explorer\csrss.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2944

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "servicess" /sc MINUTE /mo 13 /tr "'C:\MSOCache\All Users\{90140000-0044-0409-0000-0000000FF1CE}-C\services.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2840

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "services" /sc ONLOGON /tr "'C:\MSOCache\All Users\{90140000-0044-0409-0000-0000000FF1CE}-C\services.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2976

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "servicess" /sc MINUTE /mo 8 /tr "'C:\MSOCache\All Users\{90140000-0044-0409-0000-0000000FF1CE}-C\services.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3016

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "IdleI" /sc MINUTE /mo 8 /tr "'C:\Recovery\3a99bb82-4e15-11ef-8354-cae67966b5f6\Idle.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2712

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "Idle" /sc ONLOGON /tr "'C:\Recovery\3a99bb82-4e15-11ef-8354-cae67966b5f6\Idle.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2656

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "IdleI" /sc MINUTE /mo 12 /tr "'C:\Recovery\3a99bb82-4e15-11ef-8354-cae67966b5f6\Idle.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2688

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "WmiPrvSEW" /sc MINUTE /mo 14 /tr "'C:\Program Files (x86)\Google\Temp\WmiPrvSE.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2368

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "WmiPrvSE" /sc ONLOGON /tr "'C:\Program Files (x86)\Google\Temp\WmiPrvSE.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1468

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "WmiPrvSEW" /sc MINUTE /mo 11 /tr "'C:\Program Files (x86)\Google\Temp\WmiPrvSE.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2132

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "explorere" /sc MINUTE /mo 12 /tr "'C:\Recovery\3a99bb82-4e15-11ef-8354-cae67966b5f6\explorer.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2720

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "explorer" /sc ONLOGON /tr "'C:\Recovery\3a99bb82-4e15-11ef-8354-cae67966b5f6\explorer.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:900

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "explorere" /sc MINUTE /mo 12 /tr "'C:\Recovery\3a99bb82-4e15-11ef-8354-cae67966b5f6\explorer.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2092

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SystemS" /sc MINUTE /mo 5 /tr "'C:\Recovery\3a99bb82-4e15-11ef-8354-cae67966b5f6\System.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2532

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "System" /sc ONLOGON /tr "'C:\Recovery\3a99bb82-4e15-11ef-8354-cae67966b5f6\System.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1640

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SystemS" /sc MINUTE /mo 8 /tr "'C:\Recovery\3a99bb82-4e15-11ef-8354-cae67966b5f6\System.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2028

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:\Recovery\3a99bb82-4e15-11ef-8354-cae67966b5f6\explorer.exe

Filesize
828KB

MD5
18b132b3bb8258358bbef60b2807923c

SHA1
1a6dea54b8dbaafc894c426425f3f207fa7df156

SHA256
8fe2dc79406633301e735531a3ba11b1136838ccfb21ab149b06115f36ee3243

SHA512
fc909490a131af1d724253bacbb44d516460190725e5f2d742ce0c53568cb3499ef5fb541b6ecc99ebe5a3a04f6636d4423305579fee17e2f108e884e6335964

Download Submit
C:\Users\Admin\AppData\Local\Temp\qNwTt2I68S.bat

Filesize
222B

MD5
e2eace982b95687c7544d72452cc1085

SHA1
d1b16b1a3e8c9713c248b511d522c0738f3d12c2

SHA256
ef42a98d13236ce92d23c81e158e22fb22f9ae135e3dfb4f1c1d7d1d58e55b34

SHA512
64a4e0b418b6f31a206b081108eb71fa4311adc72db6227ed615834b6677fd1cea925ca93bf33c85ccc0d58e461c2cdcdc7e9657f4ac0ab35e47230f1042710e

Download Submit
memory/2348-0-0x000007FEF5AF3000-0x000007FEF5AF4000-memory.dmp

Filesize
4KB

Download
memory/2348-1-0x0000000000A40000-0x0000000000B16000-memory.dmp

Filesize
856KB

Download
memory/2348-2-0x000007FEF5AF0000-0x000007FEF64DC000-memory.dmp

Filesize
9.9MB

Download
memory/2348-20-0x000007FEF5AF0000-0x000007FEF64DC000-memory.dmp

Filesize
9.9MB

Download
memory/3004-23-0x0000000000EC0000-0x0000000000F96000-memory.dmp

Filesize
856KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads