dcrat | a22e4b92ef53c22a69ef02fa17403fcdf74d3c4b3efc8d28604040286f4cdedf

General

Target

50887c3ed5676401f9cab09d742bbce4.exe
Size

827KB
MD5

50887c3ed5676401f9cab09d742bbce4
SHA1

1e4016e50cffe51614df5a31817d50de7b85af26
SHA256

a22e4b92ef53c22a69ef02fa17403fcdf74d3c4b3efc8d28604040286f4cdedf
SHA512

bd8ec53d02ba47c8656c4260d2112f50755526898b681d1affbd50a6bdda69f01fa78d091ff812d3a25454afd03eca815fea7b869f037b4f492b1d188f376ab2
SSDEEP

12288:2NultHBphsl8LvoS8wXO0DzXLYFlTvyk31:ZHBp+ovohwDeTv131

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 15 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	2716	2868	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2792	2868	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2852	2868	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2568	2868	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2528	2868	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2576	2868	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2944	2868	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2956	2868	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	264	2868	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	572	2868	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	988	2868	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1632	2868	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1844	2868	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2624	2868	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2704	2868	schtasks.exe	30

DCRat payload 3 IoCs

Detects payload of DCRat, commonly dropped by NSIS installers.

rat

resource	yara_rule
behavioral1/memory/2104-1-0x0000000000A10000-0x0000000000AE6000-memory.dmp	dcrat
behavioral1/files/0x0006000000016d36-11.dat	dcrat
behavioral1/memory/2488-19-0x0000000000A20000-0x0000000000AF6000-memory.dmp	dcrat

Executes dropped EXE 1 IoCs

pid	Process
2488	taskhost.exe

Drops file in Program Files directory 6 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\Microsoft SQL Server Compact Edition\v3.5\b75386f1303e64	50887c3ed5676401f9cab09d742bbce4.exe
File created	C:\Program Files (x86)\Windows NT\explorer.exe	50887c3ed5676401f9cab09d742bbce4.exe
File created	C:\Program Files (x86)\Windows NT\7a0fd90576e088	50887c3ed5676401f9cab09d742bbce4.exe
File created	C:\Program Files\Uninstall Information\explorer.exe	50887c3ed5676401f9cab09d742bbce4.exe
File created	C:\Program Files\Uninstall Information\7a0fd90576e088	50887c3ed5676401f9cab09d742bbce4.exe
File created	C:\Program Files (x86)\Microsoft SQL Server Compact Edition\v3.5\taskhost.exe	50887c3ed5676401f9cab09d742bbce4.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\Help\Corporate\lsass.exe	50887c3ed5676401f9cab09d742bbce4.exe
File created	C:\Windows\Help\Corporate\6203df4a6bafc7	50887c3ed5676401f9cab09d742bbce4.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 15 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
2568	schtasks.exe
1844	schtasks.exe
2528	schtasks.exe
2576	schtasks.exe
2956	schtasks.exe
988	schtasks.exe
2852	schtasks.exe
264	schtasks.exe
572	schtasks.exe
2704	schtasks.exe
2716	schtasks.exe
2944	schtasks.exe
1632	schtasks.exe
2624	schtasks.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2104	50887c3ed5676401f9cab09d742bbce4.exe
2104	50887c3ed5676401f9cab09d742bbce4.exe
2104	50887c3ed5676401f9cab09d742bbce4.exe
2488	taskhost.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2104	50887c3ed5676401f9cab09d742bbce4.exe
Token: SeDebugPrivilege	2488	taskhost.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2104 wrote to memory of 2488	2104	50887c3ed5676401f9cab09d742bbce4.exe	46
PID 2104 wrote to memory of 2488	2104	50887c3ed5676401f9cab09d742bbce4.exe	46
PID 2104 wrote to memory of 2488	2104	50887c3ed5676401f9cab09d742bbce4.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\50887c3ed5676401f9cab09d742bbce4.exe
"C:\Users\Admin\AppData\Local\Temp\50887c3ed5676401f9cab09d742bbce4.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:2104
- C:\Program Files (x86)\Microsoft SQL Server Compact Edition\v3.5\taskhost.exe
  "C:\Program Files (x86)\Microsoft SQL Server Compact Edition\v3.5\taskhost.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2488

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "explorere" /sc MINUTE /mo 9 /tr "'C:\Users\All Users\Application Data\explorer.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2716

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "explorer" /sc ONLOGON /tr "'C:\Users\All Users\Application Data\explorer.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 "explorere" /sc MINUTE /mo 7 /tr "'C:\Users\All Users\Application Data\explorer.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2852

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "taskhostt" /sc MINUTE /mo 8 /tr "'C:\Program Files (x86)\Microsoft SQL Server Compact Edition\v3.5\taskhost.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2568

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "taskhost" /sc ONLOGON /tr "'C:\Program Files (x86)\Microsoft SQL Server Compact Edition\v3.5\taskhost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2528

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "taskhostt" /sc MINUTE /mo 9 /tr "'C:\Program Files (x86)\Microsoft SQL Server Compact Edition\v3.5\taskhost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2576

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "lsassl" /sc MINUTE /mo 9 /tr "'C:\Windows\Help\Corporate\lsass.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2944

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "lsass" /sc ONLOGON /tr "'C:\Windows\Help\Corporate\lsass.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2956

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "lsassl" /sc MINUTE /mo 11 /tr "'C:\Windows\Help\Corporate\lsass.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:264

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "explorere" /sc MINUTE /mo 6 /tr "'C:\Program Files (x86)\Windows NT\explorer.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:572

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "explorer" /sc ONLOGON /tr "'C:\Program Files (x86)\Windows NT\explorer.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:988

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "explorere" /sc MINUTE /mo 13 /tr "'C:\Program Files (x86)\Windows NT\explorer.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1632

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "explorere" /sc MINUTE /mo 6 /tr "'C:\Program Files\Uninstall Information\explorer.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1844

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "explorer" /sc ONLOGON /tr "'C:\Program Files\Uninstall Information\explorer.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2624

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "explorere" /sc MINUTE /mo 12 /tr "'C:\Program Files\Uninstall Information\explorer.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2704

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Program Files\Uninstall Information\explorer.exe

Filesize
827KB

MD5
50887c3ed5676401f9cab09d742bbce4

SHA1
1e4016e50cffe51614df5a31817d50de7b85af26

SHA256
a22e4b92ef53c22a69ef02fa17403fcdf74d3c4b3efc8d28604040286f4cdedf

SHA512
bd8ec53d02ba47c8656c4260d2112f50755526898b681d1affbd50a6bdda69f01fa78d091ff812d3a25454afd03eca815fea7b869f037b4f492b1d188f376ab2

Download Submit
memory/2104-0-0x000007FEF5A23000-0x000007FEF5A24000-memory.dmp

Filesize
4KB

Download
memory/2104-1-0x0000000000A10000-0x0000000000AE6000-memory.dmp

Filesize
856KB

Download
memory/2104-2-0x000007FEF5A20000-0x000007FEF640C000-memory.dmp

Filesize
9.9MB

Download
memory/2104-20-0x000007FEF5A20000-0x000007FEF640C000-memory.dmp

Filesize
9.9MB

Download
memory/2488-19-0x0000000000A20000-0x0000000000AF6000-memory.dmp

Filesize
856KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads