dcrat | 3490a06a34fbdc0f9d3ae55ff159fe407bf962f67b56bde78a9ad0bb312a1610

General

Target

88F34405800FD589303DD080CB702BF0.exe
Size

2.7MB
MD5

88f34405800fd589303dd080cb702bf0
SHA1

ff0464ed91e346e4a28c66e46b521916daacb839
SHA256

3490a06a34fbdc0f9d3ae55ff159fe407bf962f67b56bde78a9ad0bb312a1610
SHA512

430178b4579e748fb0581090d1a96e3acd234b4d4575a0914f9e083b64ede5351fe929413100b05fa298a4172305ec8cb79c82a53acd849365e165195d1c4765
SSDEEP

49152:kJloZITX1N8fHQxECPA8Wpd9MNZesZb6EIAZwgZILA:kJloSTX1yPQxv0tMNIC6K1Kk

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 21 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	1912	1764	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4424	1764	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	312	1764	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3380	1764	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4688	1764	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3164	1764	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2952	1764	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3408	1764	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4592	1764	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1184	1764	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4548	1764	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4808	1764	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3620	1764	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3992	1764	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	228	1764	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3488	1764	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	884	1764	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3220	1764	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2912	1764	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1304	1764	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4844	1764	schtasks.exe	83

DCRat payload 2 IoCs

Detects payload of DCRat, commonly dropped by NSIS installers.

rat

resource	yara_rule
behavioral2/memory/2220-1-0x0000000000360000-0x0000000000620000-memory.dmp	dcrat
behavioral2/files/0x0007000000023c77-30.dat	dcrat

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	88F34405800FD589303DD080CB702BF0.exe

Executes dropped EXE 1 IoCs

pid	Process
1860	smss.exe

Drops file in Program Files directory 5 IoCs

description	ioc	Process
File created	C:\Program Files\Windows Multimedia Platform\88F34405800FD589303DD080CB702BF0.exe	88F34405800FD589303DD080CB702BF0.exe
File created	C:\Program Files\Windows Multimedia Platform\6ad2e03527eec9	88F34405800FD589303DD080CB702BF0.exe
File created	C:\Program Files\dotnet\smss.exe	88F34405800FD589303DD080CB702BF0.exe
File opened for modification	C:\Program Files\dotnet\smss.exe	88F34405800FD589303DD080CB702BF0.exe
File created	C:\Program Files\dotnet\69ddcba757bf72	88F34405800FD589303DD080CB702BF0.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\GameBarPresenceWriter\27d1bcfc3c54e0	88F34405800FD589303DD080CB702BF0.exe
File created	C:\Windows\GameBarPresenceWriter\System.exe	88F34405800FD589303DD080CB702BF0.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 21 IoCs

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

persistence execution

Scheduled Task

T1053.005

pid	Process
3620	schtasks.exe
3992	schtasks.exe
228	schtasks.exe
3488	schtasks.exe
1304	schtasks.exe
4688	schtasks.exe
4592	schtasks.exe
3164	schtasks.exe
4548	schtasks.exe
4808	schtasks.exe
884	schtasks.exe
4844	schtasks.exe
1912	schtasks.exe
4424	schtasks.exe
1184	schtasks.exe
3220	schtasks.exe
3380	schtasks.exe
3408	schtasks.exe
2912	schtasks.exe
312	schtasks.exe
2952	schtasks.exe

Suspicious behavior: EnumeratesProcesses 46 IoCs

pid	Process
2220	88F34405800FD589303DD080CB702BF0.exe
2220	88F34405800FD589303DD080CB702BF0.exe
2220	88F34405800FD589303DD080CB702BF0.exe
2220	88F34405800FD589303DD080CB702BF0.exe
2220	88F34405800FD589303DD080CB702BF0.exe
2220	88F34405800FD589303DD080CB702BF0.exe
2220	88F34405800FD589303DD080CB702BF0.exe
1860	smss.exe
1860	smss.exe
1860	smss.exe
1860	smss.exe
1860	smss.exe
1860	smss.exe
1860	smss.exe
1860	smss.exe
1860	smss.exe
1860	smss.exe
1860	smss.exe
1860	smss.exe
1860	smss.exe
1860	smss.exe
1860	smss.exe
1860	smss.exe
1860	smss.exe
1860	smss.exe
1860	smss.exe
1860	smss.exe
1860	smss.exe
1860	smss.exe
1860	smss.exe
1860	smss.exe
1860	smss.exe
1860	smss.exe
1860	smss.exe
1860	smss.exe
1860	smss.exe
1860	smss.exe
1860	smss.exe
1860	smss.exe
1860	smss.exe
1860	smss.exe
1860	smss.exe
1860	smss.exe
1860	smss.exe
1860	smss.exe
1860	smss.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2220	88F34405800FD589303DD080CB702BF0.exe
Token: SeDebugPrivilege	1860	smss.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 2220 wrote to memory of 1860	2220	88F34405800FD589303DD080CB702BF0.exe	105
PID 2220 wrote to memory of 1860	2220	88F34405800FD589303DD080CB702BF0.exe	105

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\88F34405800FD589303DD080CB702BF0.exe
"C:\Users\Admin\AppData\Local\Temp\88F34405800FD589303DD080CB702BF0.exe"
1⤵
- Checks computer location settings
- Drops file in Program Files directory
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2220
- C:\Users\All Users\smss.exe
  "C:\Users\All Users\smss.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1860

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "smsss" /sc MINUTE /mo 6 /tr "'C:\Program Files\dotnet\smss.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1912

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "smss" /sc ONLOGON /tr "'C:\Program Files\dotnet\smss.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4424

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "smsss" /sc MINUTE /mo 5 /tr "'C:\Program Files\dotnet\smss.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:312

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SystemS" /sc MINUTE /mo 5 /tr "'C:\Windows\GameBarPresenceWriter\System.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3380

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "System" /sc ONLOGON /tr "'C:\Windows\GameBarPresenceWriter\System.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4688

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SystemS" /sc MINUTE /mo 6 /tr "'C:\Windows\GameBarPresenceWriter\System.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3164

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "smsss" /sc MINUTE /mo 14 /tr "'C:\Users\All Users\smss.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2952

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "smss" /sc ONLOGON /tr "'C:\Users\All Users\smss.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3408

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "smsss" /sc MINUTE /mo 5 /tr "'C:\Users\All Users\smss.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4592

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "88F34405800FD589303DD080CB702BF08" /sc MINUTE /mo 14 /tr "'C:\Program Files\Windows Multimedia Platform\88F34405800FD589303DD080CB702BF0.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1184

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "88F34405800FD589303DD080CB702BF0" /sc ONLOGON /tr "'C:\Program Files\Windows Multimedia Platform\88F34405800FD589303DD080CB702BF0.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4548

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "88F34405800FD589303DD080CB702BF08" /sc MINUTE /mo 7 /tr "'C:\Program Files\Windows Multimedia Platform\88F34405800FD589303DD080CB702BF0.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4808

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 6 /tr "'C:\Users\Public\dllhost.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3620

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dllhost" /sc ONLOGON /tr "'C:\Users\Public\dllhost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3992

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 9 /tr "'C:\Users\Public\dllhost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:228

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 12 /tr "'C:\Recovery\WindowsRE\csrss.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3488

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\csrss.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:884

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 11 /tr "'C:\Recovery\WindowsRE\csrss.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3220

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "sppsvcs" /sc MINUTE /mo 7 /tr "'C:\Recovery\WindowsRE\sppsvc.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2912

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "sppsvc" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\sppsvc.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1304

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "sppsvcs" /sc MINUTE /mo 7 /tr "'C:\Recovery\WindowsRE\sppsvc.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4844

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

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Public\dllhost.exe

Filesize
2.7MB

MD5
88f34405800fd589303dd080cb702bf0

SHA1
ff0464ed91e346e4a28c66e46b521916daacb839

SHA256
3490a06a34fbdc0f9d3ae55ff159fe407bf962f67b56bde78a9ad0bb312a1610

SHA512
430178b4579e748fb0581090d1a96e3acd234b4d4575a0914f9e083b64ede5351fe929413100b05fa298a4172305ec8cb79c82a53acd849365e165195d1c4765

Download Submit
memory/2220-12-0x00000000028B0000-0x00000000028BC000-memory.dmp

Filesize
48KB

Download
memory/2220-47-0x00007FFFE0C60000-0x00007FFFE1721000-memory.dmp

Filesize
10.8MB

Download
memory/2220-11-0x00000000028A0000-0x00000000028A8000-memory.dmp

Filesize
32KB

Download
memory/2220-4-0x0000000000E80000-0x0000000000E9C000-memory.dmp

Filesize
112KB

Download
memory/2220-6-0x0000000000EA0000-0x0000000000EA8000-memory.dmp

Filesize
32KB

Download
memory/2220-5-0x000000001B2D0000-0x000000001B320000-memory.dmp

Filesize
320KB

Download
memory/2220-7-0x0000000002860000-0x0000000002870000-memory.dmp

Filesize
64KB

Download
memory/2220-8-0x0000000002870000-0x0000000002886000-memory.dmp

Filesize
88KB

Download
memory/2220-9-0x0000000002890000-0x0000000002898000-memory.dmp

Filesize
32KB

Download
memory/2220-13-0x00000000028D0000-0x00000000028E2000-memory.dmp

Filesize
72KB

Download
memory/2220-3-0x0000000000E70000-0x0000000000E7E000-memory.dmp

Filesize
56KB

Download
memory/2220-2-0x00007FFFE0C60000-0x00007FFFE1721000-memory.dmp

Filesize
10.8MB

Download
memory/2220-10-0x000000001B320000-0x000000001B376000-memory.dmp

Filesize
344KB

Download
memory/2220-14-0x000000001BF00000-0x000000001C428000-memory.dmp

Filesize
5.2MB

Download
memory/2220-15-0x00000000028E0000-0x00000000028E8000-memory.dmp

Filesize
32KB

Download
memory/2220-16-0x000000001B390000-0x000000001B39C000-memory.dmp

Filesize
48KB

Download
memory/2220-19-0x000000001BAE0000-0x000000001BAEC000-memory.dmp

Filesize
48KB

Download
memory/2220-18-0x000000001BAD0000-0x000000001BADE000-memory.dmp

Filesize
56KB

Download
memory/2220-20-0x000000001BBF0000-0x000000001BBFA000-memory.dmp

Filesize
40KB

Download
memory/2220-21-0x000000001BC00000-0x000000001BC0C000-memory.dmp

Filesize
48KB

Download
memory/2220-17-0x000000001B3B0000-0x000000001B3BC000-memory.dmp

Filesize
48KB

Download
memory/2220-1-0x0000000000360000-0x0000000000620000-memory.dmp

Filesize
2.8MB

Download
memory/2220-0-0x00007FFFE0C63000-0x00007FFFE0C65000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads