dcrat | e446bd97230671b6e38682ec9f3da7527c18dbd555efc7f27a52d144cf54edcc

Analysis

max time kernel
62s
max time network
128s
platform
windows10_x64
resource
win10v20201028
submitted
18-11-2020 16:58

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

ForceOp 2.8.7 - By RaiSence.exe

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

Suspicious use of NtCreateProcessExOtherParentProcess 1 IoCs

description	pid	Process	procid_target
PID 1628 created 3232	1628	WerFault.exe	94

Executes dropped EXE 2 IoCs

pid	Process
2164	wincommon.exe
3232	sihost.exe

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files\Java\jdk1.8.0_66\jre\lib\management\svchost.exe	wincommon.exe
File created	C:\Program Files\Java\jdk1.8.0_66\jre\lib\management\f4d236fdec2fd03914189c3b26e5cb0dfea9d761	wincommon.exe

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

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1628	3232	WerFault.exe	94

Creates scheduled task(s) 1 TTPs 5 IoCs

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

persistence

Scheduled Task

T1053

pid	Process
1084	schtasks.exe
3468	schtasks.exe
3268	schtasks.exe
4024	schtasks.exe
2368	schtasks.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000_Classes\Local Settings	ForceOp 2.8.7 - By RaiSence.exe

Suspicious behavior: EnumeratesProcesses 16 IoCs

pid	Process
2164	wincommon.exe
3232	sihost.exe
1628	WerFault.exe
1628	WerFault.exe
1628	WerFault.exe
1628	WerFault.exe
1628	WerFault.exe
1628	WerFault.exe
1628	WerFault.exe
1628	WerFault.exe
1628	WerFault.exe
1628	WerFault.exe
1628	WerFault.exe
1628	WerFault.exe
1628	WerFault.exe
1628	WerFault.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2164	wincommon.exe
Token: SeDebugPrivilege	3232	sihost.exe
Token: SeDebugPrivilege	1628	WerFault.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1156 wrote to memory of 3408	1156	ForceOp 2.8.7 - By RaiSence.exe	74
PID 1156 wrote to memory of 3408	1156	ForceOp 2.8.7 - By RaiSence.exe	74
PID 1156 wrote to memory of 3408	1156	ForceOp 2.8.7 - By RaiSence.exe	74
PID 1156 wrote to memory of 1032	1156	ForceOp 2.8.7 - By RaiSence.exe	75
PID 1156 wrote to memory of 1032	1156	ForceOp 2.8.7 - By RaiSence.exe	75
PID 1156 wrote to memory of 1032	1156	ForceOp 2.8.7 - By RaiSence.exe	75
PID 3408 wrote to memory of 672	3408	WScript.exe	80
PID 3408 wrote to memory of 672	3408	WScript.exe	80
PID 3408 wrote to memory of 672	3408	WScript.exe	80
PID 672 wrote to memory of 2164	672	cmd.exe	82
PID 672 wrote to memory of 2164	672	cmd.exe	82
PID 2164 wrote to memory of 2368	2164	wincommon.exe	84
PID 2164 wrote to memory of 2368	2164	wincommon.exe	84
PID 2164 wrote to memory of 1084	2164	wincommon.exe	86
PID 2164 wrote to memory of 1084	2164	wincommon.exe	86
PID 2164 wrote to memory of 3468	2164	wincommon.exe	88
PID 2164 wrote to memory of 3468	2164	wincommon.exe	88
PID 2164 wrote to memory of 3268	2164	wincommon.exe	90
PID 2164 wrote to memory of 3268	2164	wincommon.exe	90
PID 2164 wrote to memory of 4024	2164	wincommon.exe	92
PID 2164 wrote to memory of 4024	2164	wincommon.exe	92
PID 2164 wrote to memory of 3232	2164	wincommon.exe	94
PID 2164 wrote to memory of 3232	2164	wincommon.exe	94

C:\Users\Admin\AppData\Local\Temp\ForceOp 2.8.7 - By RaiSence.exe
"C:\Users\Admin\AppData\Local\Temp\ForceOp 2.8.7 - By RaiSence.exe"
1⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:1156
- C:\Windows\SysWOW64\WScript.exe
  "C:\Windows\System32\WScript.exe" "C:\intofont\1Udi0TDz635jTrMWFNrE4kqnOIuYIi.vbe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3408
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\intofont\xLg6v1j1ZJy5DZ1pz826KfZq2BmfLM.bat" "
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:672
  - - C:\intofont\wincommon.exe
      "C:\intofont\wincommon.exe"
      4⤵
      Executes dropped EXE
      Drops file in Program Files directory
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:2164
    - - C:\Windows\SYSTEM32\schtasks.exe
        
        "schtasks" /create /tn "dllhost" /sc ONLOGON /tr "'C:\PerfLogs\dllhost.exe'" /rl HIGHEST /f
        5⤵
        Creates scheduled task(s)
        
        PID:2368
    - - C:\Windows\SYSTEM32\schtasks.exe
        
        "schtasks" /create /tn "svchost" /sc ONLOGON /tr "'C:\odt\svchost.exe'" /rl HIGHEST /f
        5⤵
        Creates scheduled task(s)
        
        PID:1084
    - - C:\Windows\SYSTEM32\schtasks.exe
        
        "schtasks" /create /tn "svchost" /sc ONLOGON /tr "'C:\intofont\svchost.exe'" /rl HIGHEST /f
        5⤵
        Creates scheduled task(s)
        
        PID:3468
    - - C:\Windows\SYSTEM32\schtasks.exe
        
        "schtasks" /create /tn "svchost" /sc ONLOGON /tr "'C:\Program Files\Java\jdk1.8.0_66\jre\lib\management\svchost.exe'" /rl HIGHEST /f
        5⤵
        Creates scheduled task(s)
        
        PID:3268
    - - C:\Windows\SYSTEM32\schtasks.exe
        
        "schtasks" /create /tn "sihost" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\sihost.exe'" /rl HIGHEST /f
        5⤵
        Creates scheduled task(s)
        
        PID:4024
    - - C:\Recovery\WindowsRE\sihost.exe
        
        "C:\Recovery\WindowsRE\sihost.exe"
        5⤵
        Executes dropped EXE
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:3232
      - C:\Windows\system32\WerFault.exe
        
        C:\Windows\system32\WerFault.exe -u -p 3232 -s 1528
        6⤵
        Suspicious use of NtCreateProcessExOtherParentProcess
        Program crash
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:1628
- C:\Windows\SysWOW64\WScript.exe
  "C:\Windows\System32\WScript.exe" "C:\intofont\msg.vbs"
  2⤵
  PID:1032

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/1628-58-0x000001E5E28B0000-0x000001E5E28B1000-memory.dmp

Filesize
4KB

Download
memory/1628-57-0x000001E5E28B0000-0x000001E5E28B1000-memory.dmp

Filesize
4KB

Download
memory/1628-40-0x000001E5E1A40000-0x000001E5E1A41000-memory.dmp

Filesize
4KB

Download
memory/1628-39-0x000001E5E1A40000-0x000001E5E1A41000-memory.dmp

Filesize
4KB

Download
memory/2164-23-0x00007FFC821F0000-0x00007FFC82BDC000-memory.dmp

Filesize
9.9MB

Download
memory/2164-24-0x00000000007D0000-0x00000000007D1000-memory.dmp

Filesize
4KB

Download
memory/2164-26-0x0000000002A30000-0x0000000002A31000-memory.dmp

Filesize
4KB

Download
memory/3232-35-0x00007FFC821F0000-0x00007FFC82BDC000-memory.dmp

Filesize
9.9MB

Download