dcrat | 84ad4547b1b6eacb1fa94a456851380b0cdf04a30d5461cf9c7e5dcededd8a1a

General

Target

8FF7B0B0C35C393F308F987171721BA0.exe
Size

319KB
MD5

8ff7b0b0c35c393f308f987171721ba0
SHA1

b5cf15448f31f9406ae56863569518a203c3bd7c
SHA256

84ad4547b1b6eacb1fa94a456851380b0cdf04a30d5461cf9c7e5dcededd8a1a
SHA512

310afccd6994f9632b5f0387fd189b94f31f07e33cd1404527553130a3f65e81cbcc68c96926e9cf8c8679d278beb3bc96c98ad68a849195e1b51b7977c4fb37

Score

10^/10

dcrat infostealer rat spyware stealer

Malware Config

Signatures

DcRat
DarkCrystal(DC) is a new .NET RAT active since June 2019 capable of loading additional plugins.
rat infostealer dcrat

DCRat Payload 2 IoCs

Detects payload of DCRat, commonly dropped by NSIS installers.

rat

Processes:

resource	yara_rule
C:\Recovery\34107922-98a6-11eb-a15f-ea91f6580701\taskhost.exe	dcrat
C:\Recovery\34107922-98a6-11eb-a15f-ea91f6580701\taskhost.exe	dcrat

Executes dropped EXE 1 IoCs

Processes:

taskhost.exe

pid process

1880 taskhost.exe
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

7 ipinfo.io
6 ipinfo.io
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Creates scheduled task(s) 1 TTPs 3 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exeschtasks.exeschtasks.exe

pid process

1516 schtasks.exe
624 schtasks.exe
1464 schtasks.exe
Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery
T1018

Processes:

PING.EXE

pid process

1176 PING.EXE
Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

8FF7B0B0C35C393F308F987171721BA0.exetaskhost.exe

pid process

1656 8FF7B0B0C35C393F308F987171721BA0.exe
1880 taskhost.exe
1880 taskhost.exe
1880 taskhost.exe
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

taskhost.exe

pid process

1880 taskhost.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

8FF7B0B0C35C393F308F987171721BA0.exetaskhost.exe

description pid process

Token: SeDebugPrivilege 1656 8FF7B0B0C35C393F308F987171721BA0.exe
Token: SeDebugPrivilege 1880 taskhost.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

taskhost.exe

pid process

1880 taskhost.exe

pid	process
1880	taskhost.exe

flow	ioc
7	ipinfo.io
6	ipinfo.io

pid	process
1516	schtasks.exe
624	schtasks.exe
1464	schtasks.exe

pid	process
1176	PING.EXE

pid	process
1656	8FF7B0B0C35C393F308F987171721BA0.exe
1880	taskhost.exe
1880	taskhost.exe
1880	taskhost.exe

pid	process
1880	taskhost.exe

description	pid	process
Token: SeDebugPrivilege	1656	8FF7B0B0C35C393F308F987171721BA0.exe
Token: SeDebugPrivilege	1880	taskhost.exe

pid	process
1880	taskhost.exe

Suspicious use of WriteProcessMemory 21 IoCs

Processes:

8FF7B0B0C35C393F308F987171721BA0.execmd.exe

description	pid	process	target process
PID 1656 wrote to memory of 1464	1656	8FF7B0B0C35C393F308F987171721BA0.exe	schtasks.exe
PID 1656 wrote to memory of 1464	1656	8FF7B0B0C35C393F308F987171721BA0.exe	schtasks.exe
PID 1656 wrote to memory of 1464	1656	8FF7B0B0C35C393F308F987171721BA0.exe	schtasks.exe
PID 1656 wrote to memory of 1516	1656	8FF7B0B0C35C393F308F987171721BA0.exe	schtasks.exe
PID 1656 wrote to memory of 1516	1656	8FF7B0B0C35C393F308F987171721BA0.exe	schtasks.exe
PID 1656 wrote to memory of 1516	1656	8FF7B0B0C35C393F308F987171721BA0.exe	schtasks.exe
PID 1656 wrote to memory of 624	1656	8FF7B0B0C35C393F308F987171721BA0.exe	schtasks.exe
PID 1656 wrote to memory of 624	1656	8FF7B0B0C35C393F308F987171721BA0.exe	schtasks.exe
PID 1656 wrote to memory of 624	1656	8FF7B0B0C35C393F308F987171721BA0.exe	schtasks.exe
PID 1656 wrote to memory of 752	1656	8FF7B0B0C35C393F308F987171721BA0.exe	cmd.exe
PID 1656 wrote to memory of 752	1656	8FF7B0B0C35C393F308F987171721BA0.exe	cmd.exe
PID 1656 wrote to memory of 752	1656	8FF7B0B0C35C393F308F987171721BA0.exe	cmd.exe
PID 752 wrote to memory of 484	752	cmd.exe	chcp.com
PID 752 wrote to memory of 484	752	cmd.exe	chcp.com
PID 752 wrote to memory of 484	752	cmd.exe	chcp.com
PID 752 wrote to memory of 1176	752	cmd.exe	PING.EXE
PID 752 wrote to memory of 1176	752	cmd.exe	PING.EXE
PID 752 wrote to memory of 1176	752	cmd.exe	PING.EXE
PID 752 wrote to memory of 1880	752	cmd.exe	taskhost.exe
PID 752 wrote to memory of 1880	752	cmd.exe	taskhost.exe
PID 752 wrote to memory of 1880	752	cmd.exe	taskhost.exe

C:\Users\Admin\AppData\Local\Temp\8FF7B0B0C35C393F308F987171721BA0.exe
"C:\Users\Admin\AppData\Local\Temp\8FF7B0B0C35C393F308F987171721BA0.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1656
- C:\Windows\system32\schtasks.exe
  "schtasks" /create /tn "sppsvc" /sc ONLOGON /tr "'C:\Documents and Settings\sppsvc.exe'" /rl HIGHEST /f
  2⤵
  - Creates scheduled task(s)
  PID:1464
- C:\Windows\system32\schtasks.exe
  "schtasks" /create /tn "winlogon" /sc ONLOGON /tr "'C:\Users\All Users\Adobe\Updater6\winlogon.exe'" /rl HIGHEST /f
  2⤵
  - Creates scheduled task(s)
  PID:1516
- C:\Windows\system32\schtasks.exe
  "schtasks" /create /tn "taskhost" /sc ONLOGON /tr "'C:\Recovery\34107922-98a6-11eb-a15f-ea91f6580701\taskhost.exe'" /rl HIGHEST /f
  2⤵
  - Creates scheduled task(s)
  PID:624
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\I8R855YKf6.bat"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:752
- - C:\Windows\system32\chcp.com
    chcp 65001
    3⤵
    PID:484
- - C:\Windows\system32\PING.EXE
    ping -n 5 localhost
    3⤵
    - Runs ping.exe
    PID:1176
- - C:\Recovery\34107922-98a6-11eb-a15f-ea91f6580701\taskhost.exe
    "C:\Recovery\34107922-98a6-11eb-a15f-ea91f6580701\taskhost.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:1880

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Credential Access

Credentials in Files

1

T1081

Discovery

Remote System Discovery

1

T1018

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\Recovery\34107922-98a6-11eb-a15f-ea91f6580701\taskhost.exe

MD5
8ff7b0b0c35c393f308f987171721ba0

SHA1
b5cf15448f31f9406ae56863569518a203c3bd7c

SHA256
84ad4547b1b6eacb1fa94a456851380b0cdf04a30d5461cf9c7e5dcededd8a1a

SHA512
310afccd6994f9632b5f0387fd189b94f31f07e33cd1404527553130a3f65e81cbcc68c96926e9cf8c8679d278beb3bc96c98ad68a849195e1b51b7977c4fb37

Download Submit
C:\Recovery\34107922-98a6-11eb-a15f-ea91f6580701\taskhost.exe

MD5
8ff7b0b0c35c393f308f987171721ba0

SHA1
b5cf15448f31f9406ae56863569518a203c3bd7c

SHA256
84ad4547b1b6eacb1fa94a456851380b0cdf04a30d5461cf9c7e5dcededd8a1a

SHA512
310afccd6994f9632b5f0387fd189b94f31f07e33cd1404527553130a3f65e81cbcc68c96926e9cf8c8679d278beb3bc96c98ad68a849195e1b51b7977c4fb37

Download Submit
C:\Users\Admin\AppData\Local\Temp\I8R855YKf6.bat

MD5
47ae4d0bbbdc663221f56b5c403958ee

SHA1
2cc1895a9a33c9df1b4a471eeeb544cbc9ae430f

SHA256
264790c28fb8440a938025cfe9c6ed8dce47d022ab621aef3c65b49026410709

SHA512
77a8611471cd2f7a79d63c06d52f8a6db8805ce937d37e2a97f18f8aa9d40f10956ee369f52f719291f77460f08b549f4f80ea8275c3bd2ca5d0ce6b063f6667

Download Submit
memory/484-67-0x0000000000000000-mapping.dmp

Download
memory/624-64-0x0000000000000000-mapping.dmp

Download
memory/752-65-0x0000000000000000-mapping.dmp

Download
memory/1176-68-0x0000000000000000-mapping.dmp

Download
memory/1464-62-0x0000000000000000-mapping.dmp

Download
memory/1516-63-0x0000000000000000-mapping.dmp

Download
memory/1656-59-0x0000000000930000-0x0000000000931000-memory.dmp

Filesize
4KB

Download
memory/1656-61-0x000000001AEB0000-0x000000001AEB2000-memory.dmp

Filesize
8KB

Download
memory/1880-70-0x0000000000000000-mapping.dmp

Download
memory/1880-72-0x00000000000A0000-0x00000000000A1000-memory.dmp

Filesize
4KB

Download
memory/1880-74-0x000000001AAE0000-0x000000001AAE2000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads