dcrat | 4128341009cc3f617bf5612d7c933bc99c00eea63dfce6f24bbe0ba16f1bb1f0

Analysis

max time kernel
117s
max time network
121s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
11-12-2024 08:09

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General

Target

4128341009cc3f617bf5612d7c933bc99c00eea63dfce6f24bbe0ba16f1bb1f0.exe
Size

2.1MB
MD5

0e0afa05a99d26d55a9df6876eee479f
SHA1

652fe26e32763a493f04e61c5a5d36c628217ef8
SHA256

4128341009cc3f617bf5612d7c933bc99c00eea63dfce6f24bbe0ba16f1bb1f0
SHA512

bc2b23ed0307f7cd81514ff8bfe83316e1b27b6dbd69a08ca0d4618e6363dd3de5d91b1d4f38b059c73c487867c5980b7e7c49c920672589273a140728510cfc
SSDEEP

24576:2TbBv5rUyXVpz/IPMofzXxgF5X1u1seTK44vmrUcSgjBYsRX8TGxj4fY3D5K7TqD:IBJp0PbsCk44v0y4BYgAGxrNKvdVTK

Score

10^/10

dcrat discovery 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 family
dcrat

Process spawned unexpected child process 18 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	2004	2620	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1284	2620	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1496	2620	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1648	2620	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2980	2620	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2408	2620	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2616	2620	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2664	2620	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2892	2620	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2548	2620	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2644	2620	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1748	2620	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2092	2620	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2144	2620	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	588	2620	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	608	2620	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2372	2620	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2164	2620	schtasks.exe	34

Executes dropped EXE 2 IoCs

pid	Process
2772	Winver.exe
2192	dwm.exe

Loads dropped DLL 2 IoCs

pid	Process
2840	cmd.exe
2840	cmd.exe

Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files\Microsoft Office\Office14\1033\csrss.exe	Winver.exe
File created	C:\Program Files\Microsoft Office\Office14\1033\886983d96e3d3e	Winver.exe

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4128341009cc3f617bf5612d7c933bc99c00eea63dfce6f24bbe0ba16f1bb1f0.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	WScript.exe

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
2116	PING.EXE

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2116	PING.EXE

Scheduled Task/Job: Scheduled Task 1 TTPs 18 IoCs

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

persistence execution

Scheduled Task

T1053.005

pid	Process
2644	schtasks.exe
2092	schtasks.exe
588	schtasks.exe
2408	schtasks.exe
2664	schtasks.exe
2892	schtasks.exe
2548	schtasks.exe
2372	schtasks.exe
2164	schtasks.exe
1496	schtasks.exe
1648	schtasks.exe
2144	schtasks.exe
608	schtasks.exe
1748	schtasks.exe
2004	schtasks.exe
1284	schtasks.exe
2980	schtasks.exe
2616	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2772	Winver.exe
2772	Winver.exe
2772	Winver.exe
2772	Winver.exe
2772	Winver.exe
2772	Winver.exe
2772	Winver.exe
2772	Winver.exe
2772	Winver.exe
2772	Winver.exe
2772	Winver.exe
2772	Winver.exe
2772	Winver.exe
2772	Winver.exe
2772	Winver.exe
2772	Winver.exe
2772	Winver.exe
2772	Winver.exe
2772	Winver.exe
2772	Winver.exe
2772	Winver.exe
2772	Winver.exe
2772	Winver.exe
2772	Winver.exe
2772	Winver.exe
2772	Winver.exe
2772	Winver.exe
2772	Winver.exe
2772	Winver.exe
2772	Winver.exe
2772	Winver.exe
2772	Winver.exe
2772	Winver.exe
2772	Winver.exe
2772	Winver.exe
2772	Winver.exe
2772	Winver.exe
2772	Winver.exe
2772	Winver.exe
2772	Winver.exe
2772	Winver.exe
2772	Winver.exe
2772	Winver.exe
2772	Winver.exe
2772	Winver.exe
2772	Winver.exe
2772	Winver.exe
2772	Winver.exe
2772	Winver.exe
2772	Winver.exe
2772	Winver.exe
2192	dwm.exe
2192	dwm.exe
2192	dwm.exe
2192	dwm.exe
2192	dwm.exe
2192	dwm.exe
2192	dwm.exe
2192	dwm.exe
2192	dwm.exe
2192	dwm.exe
2192	dwm.exe
2192	dwm.exe
2192	dwm.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2772	Winver.exe
Token: SeDebugPrivilege	2192	dwm.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 2232 wrote to memory of 2784	2232	4128341009cc3f617bf5612d7c933bc99c00eea63dfce6f24bbe0ba16f1bb1f0.exe	30
PID 2232 wrote to memory of 2784	2232	4128341009cc3f617bf5612d7c933bc99c00eea63dfce6f24bbe0ba16f1bb1f0.exe	30
PID 2232 wrote to memory of 2784	2232	4128341009cc3f617bf5612d7c933bc99c00eea63dfce6f24bbe0ba16f1bb1f0.exe	30
PID 2232 wrote to memory of 2784	2232	4128341009cc3f617bf5612d7c933bc99c00eea63dfce6f24bbe0ba16f1bb1f0.exe	30
PID 2784 wrote to memory of 2840	2784	WScript.exe	31
PID 2784 wrote to memory of 2840	2784	WScript.exe	31
PID 2784 wrote to memory of 2840	2784	WScript.exe	31
PID 2784 wrote to memory of 2840	2784	WScript.exe	31
PID 2840 wrote to memory of 2772	2840	cmd.exe	33
PID 2840 wrote to memory of 2772	2840	cmd.exe	33
PID 2840 wrote to memory of 2772	2840	cmd.exe	33
PID 2840 wrote to memory of 2772	2840	cmd.exe	33
PID 2772 wrote to memory of 2364	2772	Winver.exe	53
PID 2772 wrote to memory of 2364	2772	Winver.exe	53
PID 2772 wrote to memory of 2364	2772	Winver.exe	53
PID 2364 wrote to memory of 2152	2364	cmd.exe	55
PID 2364 wrote to memory of 2152	2364	cmd.exe	55
PID 2364 wrote to memory of 2152	2364	cmd.exe	55
PID 2364 wrote to memory of 2116	2364	cmd.exe	56
PID 2364 wrote to memory of 2116	2364	cmd.exe	56
PID 2364 wrote to memory of 2116	2364	cmd.exe	56
PID 2364 wrote to memory of 2192	2364	cmd.exe	57
PID 2364 wrote to memory of 2192	2364	cmd.exe	57
PID 2364 wrote to memory of 2192	2364	cmd.exe	57

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\4128341009cc3f617bf5612d7c933bc99c00eea63dfce6f24bbe0ba16f1bb1f0.exe
"C:\Users\Admin\AppData\Local\Temp\4128341009cc3f617bf5612d7c933bc99c00eea63dfce6f24bbe0ba16f1bb1f0.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2232
- C:\Windows\SysWOW64\WScript.exe
  "C:\Windows\System32\WScript.exe" "C:\ESD\UST9UxLQoHNIIFaYLHo0xhIRlgCNcLzoLb106m2nL.vbe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2784
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c ""C:\ESD\bQzfgHSGdt2kLcLlkun74cHPltHDXr5Sp886hMeTP.bat" "
    3⤵
    - Loads dropped DLL
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2840
  - - C:\ESD\Winver.exe
      "C:\ESD/Winver.exe"
      4⤵
      Executes dropped EXE
      Drops file in Program Files directory
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:2772
    - - C:\Windows\System32\cmd.exe
        
        "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\MFf87HKgq0.bat"
        5⤵
        Suspicious use of WriteProcessMemory
        
        PID:2364
      - C:\Windows\system32\chcp.com
        
        chcp 65001
        6⤵
        
        PID:2152
      - C:\Windows\system32\PING.EXE
        
        ping -n 10 localhost
        6⤵
        System Network Configuration Discovery: Internet Connection Discovery
        Runs ping.exe
        
        PID:2116
      - C:\Users\Admin\Videos\dwm.exe
        
        "C:\Users\Admin\Videos\dwm.exe"
        6⤵
        Executes dropped EXE
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:2192

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 13 /tr "'C:\Program Files\Microsoft Office\Office14\1033\csrss.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2004

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\Program Files\Microsoft Office\Office14\1033\csrss.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1284

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 7 /tr "'C:\Program Files\Microsoft Office\Office14\1033\csrss.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1496

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "explorere" /sc MINUTE /mo 10 /tr "'C:\MSOCache\All Users\{90140000-002C-0409-0000-0000000FF1CE}-C\Proof.en\explorer.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1648

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "explorer" /sc ONLOGON /tr "'C:\MSOCache\All Users\{90140000-002C-0409-0000-0000000FF1CE}-C\Proof.en\explorer.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2980

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "explorere" /sc MINUTE /mo 11 /tr "'C:\MSOCache\All Users\{90140000-002C-0409-0000-0000000FF1CE}-C\Proof.en\explorer.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2408

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 7 /tr "'C:\ESD\dwm.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2616

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dwm" /sc ONLOGON /tr "'C:\ESD\dwm.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2664

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 10 /tr "'C:\ESD\dwm.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2892

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 11 /tr "'C:\Users\Admin\Videos\dwm.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2548

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dwm" /sc ONLOGON /tr "'C:\Users\Admin\Videos\dwm.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2644

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 12 /tr "'C:\Users\Admin\Videos\dwm.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1748

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SystemS" /sc MINUTE /mo 12 /tr "'C:\MSOCache\All Users\{90140000-001B-0409-0000-0000000FF1CE}-C\System.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2092

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "System" /sc ONLOGON /tr "'C:\MSOCache\All Users\{90140000-001B-0409-0000-0000000FF1CE}-C\System.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2144

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SystemS" /sc MINUTE /mo 8 /tr "'C:\MSOCache\All Users\{90140000-001B-0409-0000-0000000FF1CE}-C\System.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:588

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "WinverW" /sc MINUTE /mo 6 /tr "'C:\ESD\Winver.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:608

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "Winver" /sc ONLOGON /tr "'C:\ESD\Winver.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2372

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "WinverW" /sc MINUTE /mo 10 /tr "'C:\ESD\Winver.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2164

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Query Registry

T1012

Remote System Discovery

T1018

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

System Network Configuration Discovery

T1016

Internet Connection Discovery

T1016.001

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\ESD\UST9UxLQoHNIIFaYLHo0xhIRlgCNcLzoLb106m2nL.vbe

Filesize
222B

MD5
8decf43a92645d8ba4b81696c5e7b1ae

SHA1
dcc9ca8b24e3adf7568eb0f6b7f5cd27f039faf6

SHA256
6ad34bd4e803fad802052423aeab64f4c60dd3ee55a3167425b9640ae24bfea1

SHA512
72e44773f484d2e69ebd41cc555d9a57c833b3930e1f3b0326c90882035e0dc5fb54e8d4ded22cf9f2d28fb502b37b133b7c1c9f9d89b8c21857b569c51ebc17

Download Submit
C:\ESD\Winver.exe

Filesize
1.8MB

MD5
d9ce1032fee5365065a78bbff7267883

SHA1
4c7471b47d4151908dd204303421d7c64cf4c5c6

SHA256
65d26e7c0b856832e88efefe5c2a9e767fb2a7345715bbd0a6e10f9ac2afb520

SHA512
0455364fa91c07da6fecbfb3e3fdbbbcb909e3176b5b151e3653f8b8ebffc02e14fb3471245df479b83f90cd2e1142bcff82b80555cfb3df113696b2925d9435

Download Submit
C:\ESD\bQzfgHSGdt2kLcLlkun74cHPltHDXr5Sp886hMeTP.bat

Filesize
57B

MD5
d1a4f1e326e7dfca62327ea69446dc7c

SHA1
253e264c90cbd15836d8c3a1eab3c26756d94047

SHA256
ea091556a5dbab314a6029817a9db64f9b8adc7afb476bbbb11aec0c227f0de2

SHA512
3d4624c169297b50329a4e13f3f559a7a1f02112f6482e45cfba747dad11c6e6642f1411cec5e92d7890f86fb38702f48c75fec4d24332d43484ad7b9dbf29c8

Download Submit
C:\Users\Admin\AppData\Local\Temp\MFf87HKgq0.bat

Filesize
157B

MD5
8b4552933ed2f85d6d172bacdd9bfc8d

SHA1
93212bd4fd4faa96fe0247c6a408d3c85f5c24fb

SHA256
a9d7a56cf36508d7bc810a94117a9d4de0f4051e56810767888ee15afeb23499

SHA512
c2013b1485ab0492bc1bf9dbedaaa1897d8d8d9be1dba1f3d2dc560579342afb4a0370b6cd68ceedd045fce6dab41e6fcdee64b552134d890fb79b978155dd1c

Download Submit
memory/2192-38-0x00000000013C0000-0x0000000001594000-memory.dmp

Filesize
1.8MB

Download
memory/2772-13-0x0000000000F40000-0x0000000001114000-memory.dmp

Filesize
1.8MB

Download
memory/2772-15-0x0000000000A40000-0x0000000000A4E000-memory.dmp

Filesize
56KB

Download
memory/2772-17-0x0000000000A70000-0x0000000000A8C000-memory.dmp

Filesize
112KB

Download
memory/2772-19-0x0000000000A90000-0x0000000000AA8000-memory.dmp

Filesize
96KB

Download