dcrat | c25f075beb4681df3df52d716babd7d1570f15f433e9b55880102ecc6a70de67

General

Target

c25f075beb4681df3df52d716babd7d1570f15f433e9b55880102ecc6a70de67.exe
Size

827KB
MD5

b75ce2dd6d4635f56d18407c6dd6a3e0
SHA1

42360f11f12bbfb0c7f8ce1f793d463f4b3b49f5
SHA256

c25f075beb4681df3df52d716babd7d1570f15f433e9b55880102ecc6a70de67
SHA512

bdd693058101ed735339ab4b71d643fb4b8bb6a21c2f0b365fc13228a01f2d10a7a0fbe85dd6ebbf10f31dd5a5052fc2c7df83b659ad73128e55058dc635fa16
SSDEEP

12288:+PjbkdQsEdvdRDnB0WmNN3D+nvIsmnxkmt7IxcC1A:+rbQQsE9WWmNNz+wpxlyxcMA

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 12 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	1656	2864	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2792	2864	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2116	2864	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2680	2864	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2796	2864	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2520	2864	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	532	2864	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	536	2864	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	572	2864	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	632	2864	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1720	2864	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2176	2864	schtasks.exe	30

DCRat payload 3 IoCs

Detects payload of DCRat, commonly dropped by NSIS installers.

rat

resource	yara_rule
behavioral1/memory/2844-1-0x00000000001B0000-0x0000000000286000-memory.dmp	dcrat
behavioral1/files/0x000c00000001202c-18.dat	dcrat
behavioral1/memory/796-19-0x0000000000350000-0x0000000000426000-memory.dmp	dcrat

Executes dropped EXE 1 IoCs

pid	Process
796	WmiPrvSE.exe

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\Microsoft Sync Framework\v1.0\Runtime\x86\c25f075beb4681df3df52d716babd7d1570f15f433e9b55880102ecc6a70de67.exe	c25f075beb4681df3df52d716babd7d1570f15f433e9b55880102ecc6a70de67.exe
File created	C:\Program Files (x86)\Microsoft Sync Framework\v1.0\Runtime\x86\30ee6a736841e4	c25f075beb4681df3df52d716babd7d1570f15f433e9b55880102ecc6a70de67.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\addins\wininit.exe	c25f075beb4681df3df52d716babd7d1570f15f433e9b55880102ecc6a70de67.exe
File created	C:\Windows\addins\56085415360792	c25f075beb4681df3df52d716babd7d1570f15f433e9b55880102ecc6a70de67.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 12 IoCs

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

persistence execution

Scheduled Task

T1053.005

pid	Process
2792	schtasks.exe
632	schtasks.exe
2176	schtasks.exe
536	schtasks.exe
572	schtasks.exe
1656	schtasks.exe
2116	schtasks.exe
2680	schtasks.exe
2796	schtasks.exe
2520	schtasks.exe
532	schtasks.exe
1720	schtasks.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2844	c25f075beb4681df3df52d716babd7d1570f15f433e9b55880102ecc6a70de67.exe
796	WmiPrvSE.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2844	c25f075beb4681df3df52d716babd7d1570f15f433e9b55880102ecc6a70de67.exe
Token: SeDebugPrivilege	796	WmiPrvSE.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2844 wrote to memory of 2344	2844	c25f075beb4681df3df52d716babd7d1570f15f433e9b55880102ecc6a70de67.exe	43
PID 2844 wrote to memory of 2344	2844	c25f075beb4681df3df52d716babd7d1570f15f433e9b55880102ecc6a70de67.exe	43
PID 2844 wrote to memory of 2344	2844	c25f075beb4681df3df52d716babd7d1570f15f433e9b55880102ecc6a70de67.exe	43
PID 2344 wrote to memory of 2912	2344	cmd.exe	45
PID 2344 wrote to memory of 2912	2344	cmd.exe	45
PID 2344 wrote to memory of 2912	2344	cmd.exe	45
PID 2344 wrote to memory of 796	2344	cmd.exe	46
PID 2344 wrote to memory of 796	2344	cmd.exe	46
PID 2344 wrote to memory of 796	2344	cmd.exe	46

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\c25f075beb4681df3df52d716babd7d1570f15f433e9b55880102ecc6a70de67.exe
"C:\Users\Admin\AppData\Local\Temp\c25f075beb4681df3df52d716babd7d1570f15f433e9b55880102ecc6a70de67.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:2844
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\9uBXwmdMRj.bat"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2344
- - C:\Windows\system32\w32tm.exe
    w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
    3⤵
    PID:2912
- - C:\MSOCache\All Users\{90140000-0018-0409-0000-0000000FF1CE}-C\WmiPrvSE.exe
    "C:\MSOCache\All Users\{90140000-0018-0409-0000-0000000FF1CE}-C\WmiPrvSE.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:796

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "WmiPrvSEW" /sc MINUTE /mo 6 /tr "'C:\MSOCache\All Users\{90140000-0018-0409-0000-0000000FF1CE}-C\WmiPrvSE.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1656

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "WmiPrvSE" /sc ONLOGON /tr "'C:\MSOCache\All Users\{90140000-0018-0409-0000-0000000FF1CE}-C\WmiPrvSE.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2792

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "WmiPrvSEW" /sc MINUTE /mo 12 /tr "'C:\MSOCache\All Users\{90140000-0018-0409-0000-0000000FF1CE}-C\WmiPrvSE.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2116

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 9 /tr "'C:\Windows\addins\wininit.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2680

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "wininit" /sc ONLOGON /tr "'C:\Windows\addins\wininit.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2796

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 7 /tr "'C:\Windows\addins\wininit.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2520

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "c25f075beb4681df3df52d716babd7d1570f15f433e9b55880102ecc6a70de67c" /sc MINUTE /mo 14 /tr "'C:\Program Files (x86)\Microsoft Sync Framework\v1.0\Runtime\x86\c25f075beb4681df3df52d716babd7d1570f15f433e9b55880102ecc6a70de67.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:532

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "c25f075beb4681df3df52d716babd7d1570f15f433e9b55880102ecc6a70de67" /sc ONLOGON /tr "'C:\Program Files (x86)\Microsoft Sync Framework\v1.0\Runtime\x86\c25f075beb4681df3df52d716babd7d1570f15f433e9b55880102ecc6a70de67.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:536

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "c25f075beb4681df3df52d716babd7d1570f15f433e9b55880102ecc6a70de67c" /sc MINUTE /mo 13 /tr "'C:\Program Files (x86)\Microsoft Sync Framework\v1.0\Runtime\x86\c25f075beb4681df3df52d716babd7d1570f15f433e9b55880102ecc6a70de67.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:572

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "lsml" /sc MINUTE /mo 13 /tr "'C:\Users\Admin\Pictures\lsm.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:632

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "lsm" /sc ONLOGON /tr "'C:\Users\Admin\Pictures\lsm.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1720

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "lsml" /sc MINUTE /mo 14 /tr "'C:\Users\Admin\Pictures\lsm.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2176

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

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Downloads

C:\MSOCache\All Users\{90140000-0018-0409-0000-0000000FF1CE}-C\WmiPrvSE.exe

Filesize
827KB

MD5
b75ce2dd6d4635f56d18407c6dd6a3e0

SHA1
42360f11f12bbfb0c7f8ce1f793d463f4b3b49f5

SHA256
c25f075beb4681df3df52d716babd7d1570f15f433e9b55880102ecc6a70de67

SHA512
bdd693058101ed735339ab4b71d643fb4b8bb6a21c2f0b365fc13228a01f2d10a7a0fbe85dd6ebbf10f31dd5a5052fc2c7df83b659ad73128e55058dc635fa16

Download Submit
C:\Users\Admin\AppData\Local\Temp\9uBXwmdMRj.bat

Filesize
240B

MD5
e1d492da2c563ff0322cb182897bd070

SHA1
78687ebfa16953cbcee6cd746660c349970dda04

SHA256
02844613fb2815fdd985c65eee746da06164343fa8bac6afd691af160d99c2fb

SHA512
d0058b81ee4d51f465bd777a1fc23588bc7e1c3bedf6d258f10e7f6b8b470afa397124afe06ac65c34dc9c87570e9763c4a9a52b093ac922d9ed9aab701fc590

Download Submit
memory/796-19-0x0000000000350000-0x0000000000426000-memory.dmp

Filesize
856KB

Download
memory/2844-0-0x000007FEF5543000-0x000007FEF5544000-memory.dmp

Filesize
4KB

Download
memory/2844-1-0x00000000001B0000-0x0000000000286000-memory.dmp

Filesize
856KB

Download
memory/2844-2-0x000007FEF5540000-0x000007FEF5F2C000-memory.dmp

Filesize
9.9MB

Download
memory/2844-16-0x000007FEF5540000-0x000007FEF5F2C000-memory.dmp

Filesize
9.9MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads