dcrat | a6429d9778a93254c7387cf588619a2635ed97108558a122de885aad25a57eb7

Analysis

max time kernel
121s
max time network
145s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
07-12-2024 17:56

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General

Target

a6429d9778a93254c7387cf588619a2635ed97108558a122de885aad25a57eb7.exe
Size

2.1MB
MD5

6261ec3f13e1cc6ae25ee8942db137b0
SHA1

20629ed3f752869dc4980827291bf3064333405f
SHA256

a6429d9778a93254c7387cf588619a2635ed97108558a122de885aad25a57eb7
SHA512

ed292a77db5e9926cbaa247e449a4019776b2452d2e8cdadfcea4c3d7551372793b2a1125b44cfd5106d2b03ff178041d413750ee81bfc42d7a3252a934b51f1
SSDEEP

24576:2TbBv5rUyXVpz/IPMofzXxgF5X1u1seTK44vmrUcSgjBYsRX8TGxj4fY3D5K7Tqb:IBJp0PbsCk44v0y4BYgAGxrNKvdVT6

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	1924	2848	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2492	2848	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2616	2848	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2668	2848	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2340	2848	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2276	2848	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	640	2848	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2936	2848	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	380	2848	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2924	2848	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2604	2848	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2916	2848	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2900	2848	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1688	2848	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	764	2848	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1828	2848	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	956	2848	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1152	2848	schtasks.exe	34

Executes dropped EXE 2 IoCs

pid	Process
2436	Winver.exe
416	conhost.exe

Loads dropped DLL 2 IoCs

pid	Process
2800	cmd.exe
2800	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\conhost.exe	Winver.exe
File created	C:\Program Files\Microsoft Office\088424020bedd6	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	a6429d9778a93254c7387cf588619a2635ed97108558a122de885aad25a57eb7.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	WScript.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.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
1520	PING.EXE

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1520	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
2276	schtasks.exe
380	schtasks.exe
956	schtasks.exe
2340	schtasks.exe
640	schtasks.exe
2936	schtasks.exe
1152	schtasks.exe
2492	schtasks.exe
2616	schtasks.exe
2604	schtasks.exe
1688	schtasks.exe
764	schtasks.exe
1828	schtasks.exe
1924	schtasks.exe
2668	schtasks.exe
2924	schtasks.exe
2916	schtasks.exe
2900	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2436	Winver.exe
2436	Winver.exe
2436	Winver.exe
2436	Winver.exe
2436	Winver.exe
2436	Winver.exe
2436	Winver.exe
2436	Winver.exe
2436	Winver.exe
2436	Winver.exe
2436	Winver.exe
2436	Winver.exe
2436	Winver.exe
2436	Winver.exe
2436	Winver.exe
2436	Winver.exe
2436	Winver.exe
2436	Winver.exe
2436	Winver.exe
2436	Winver.exe
2436	Winver.exe
2436	Winver.exe
2436	Winver.exe
2436	Winver.exe
2436	Winver.exe
2436	Winver.exe
2436	Winver.exe
2436	Winver.exe
2436	Winver.exe
2436	Winver.exe
2436	Winver.exe
2436	Winver.exe
2436	Winver.exe
2436	Winver.exe
2436	Winver.exe
2436	Winver.exe
2436	Winver.exe
2436	Winver.exe
2436	Winver.exe
2436	Winver.exe
2436	Winver.exe
2436	Winver.exe
2436	Winver.exe
2436	Winver.exe
2436	Winver.exe
2436	Winver.exe
2436	Winver.exe
2436	Winver.exe
2436	Winver.exe
2436	Winver.exe
2436	Winver.exe
2436	Winver.exe
2436	Winver.exe
2436	Winver.exe
2436	Winver.exe
2436	Winver.exe
2436	Winver.exe
2436	Winver.exe
2436	Winver.exe
2436	Winver.exe
416	conhost.exe
416	conhost.exe
416	conhost.exe
416	conhost.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2436	Winver.exe
Token: SeDebugPrivilege	416	conhost.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 632 wrote to memory of 3056	632	a6429d9778a93254c7387cf588619a2635ed97108558a122de885aad25a57eb7.exe	30
PID 632 wrote to memory of 3056	632	a6429d9778a93254c7387cf588619a2635ed97108558a122de885aad25a57eb7.exe	30
PID 632 wrote to memory of 3056	632	a6429d9778a93254c7387cf588619a2635ed97108558a122de885aad25a57eb7.exe	30
PID 632 wrote to memory of 3056	632	a6429d9778a93254c7387cf588619a2635ed97108558a122de885aad25a57eb7.exe	30
PID 3056 wrote to memory of 2800	3056	WScript.exe	31
PID 3056 wrote to memory of 2800	3056	WScript.exe	31
PID 3056 wrote to memory of 2800	3056	WScript.exe	31
PID 3056 wrote to memory of 2800	3056	WScript.exe	31
PID 2800 wrote to memory of 2436	2800	cmd.exe	33
PID 2800 wrote to memory of 2436	2800	cmd.exe	33
PID 2800 wrote to memory of 2436	2800	cmd.exe	33
PID 2800 wrote to memory of 2436	2800	cmd.exe	33
PID 2436 wrote to memory of 2356	2436	Winver.exe	53
PID 2436 wrote to memory of 2356	2436	Winver.exe	53
PID 2436 wrote to memory of 2356	2436	Winver.exe	53
PID 2356 wrote to memory of 2152	2356	cmd.exe	55
PID 2356 wrote to memory of 2152	2356	cmd.exe	55
PID 2356 wrote to memory of 2152	2356	cmd.exe	55
PID 2356 wrote to memory of 1520	2356	cmd.exe	56
PID 2356 wrote to memory of 1520	2356	cmd.exe	56
PID 2356 wrote to memory of 1520	2356	cmd.exe	56
PID 2356 wrote to memory of 416	2356	cmd.exe	58
PID 2356 wrote to memory of 416	2356	cmd.exe	58
PID 2356 wrote to memory of 416	2356	cmd.exe	58

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\a6429d9778a93254c7387cf588619a2635ed97108558a122de885aad25a57eb7.exe
"C:\Users\Admin\AppData\Local\Temp\a6429d9778a93254c7387cf588619a2635ed97108558a122de885aad25a57eb7.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:632
- 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:3056
- - 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:2800
  - - 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:2436
    - - C:\Windows\System32\cmd.exe
        
        "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\feWJanOxlf.bat"
        5⤵
        Suspicious use of WriteProcessMemory
        
        PID:2356
      - 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:1520
      - C:\Program Files\Microsoft Office\conhost.exe
        
        "C:\Program Files\Microsoft Office\conhost.exe"
        6⤵
        Executes dropped EXE
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:416

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "winlogonw" /sc MINUTE /mo 10 /tr "'C:\Recovery\1a287102-69f6-11ef-b2ff-62cb582c238c\winlogon.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1924

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "winlogon" /sc ONLOGON /tr "'C:\Recovery\1a287102-69f6-11ef-b2ff-62cb582c238c\winlogon.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2492

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "winlogonw" /sc MINUTE /mo 14 /tr "'C:\Recovery\1a287102-69f6-11ef-b2ff-62cb582c238c\winlogon.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2616

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "conhostc" /sc MINUTE /mo 10 /tr "'C:\Program Files\Microsoft Office\conhost.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2668

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "conhost" /sc ONLOGON /tr "'C:\Program Files\Microsoft Office\conhost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2340

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "conhostc" /sc MINUTE /mo 14 /tr "'C:\Program Files\Microsoft Office\conhost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2276

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 5 /tr "'C:\Recovery\1a287102-69f6-11ef-b2ff-62cb582c238c\wininit.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:640

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "wininit" /sc ONLOGON /tr "'C:\Recovery\1a287102-69f6-11ef-b2ff-62cb582c238c\wininit.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2936

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 12 /tr "'C:\Recovery\1a287102-69f6-11ef-b2ff-62cb582c238c\wininit.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:380

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "sppsvcs" /sc MINUTE /mo 13 /tr "'C:\Recovery\1a287102-69f6-11ef-b2ff-62cb582c238c\sppsvc.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2924

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "sppsvc" /sc ONLOGON /tr "'C:\Recovery\1a287102-69f6-11ef-b2ff-62cb582c238c\sppsvc.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2604

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "sppsvcs" /sc MINUTE /mo 11 /tr "'C:\Recovery\1a287102-69f6-11ef-b2ff-62cb582c238c\sppsvc.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2916

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 7 /tr "'C:\Users\All Users\Start Menu\dllhost.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2900

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dllhost" /sc ONLOGON /tr "'C:\Users\All Users\Start Menu\dllhost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1688

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 13 /tr "'C:\Users\All Users\Start Menu\dllhost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:764

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "WinverW" /sc MINUTE /mo 12 /tr "'C:\ESD\Winver.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1828

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:956

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "WinverW" /sc MINUTE /mo 11 /tr "'C:\ESD\Winver.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1152

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\bQzfgHSGdt2kLcLlkun74cHPltHDXr5Sp886hMeTP.bat

Filesize
57B

MD5
d1a4f1e326e7dfca62327ea69446dc7c

SHA1
253e264c90cbd15836d8c3a1eab3c26756d94047

SHA256
ea091556a5dbab314a6029817a9db64f9b8adc7afb476bbbb11aec0c227f0de2

SHA512
3d4624c169297b50329a4e13f3f559a7a1f02112f6482e45cfba747dad11c6e6642f1411cec5e92d7890f86fb38702f48c75fec4d24332d43484ad7b9dbf29c8

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

Filesize
173B

MD5
aa9000e054a152d608346ea634a96da7

SHA1
b70f6f200c71d8a852b011990d81cda6600d5945

SHA256
d91567c2507993cc6fb5a8328a0fdfa99def6bb8c16baea6d457dc54dcbafed5

SHA512
db45f55725a76a0875fc4ec54cec4d3f01d6c2182f091f11024d1eb086f3dca9e1dd5ebb90a30f9a7ca1945a3ba10821f5b420fdbed1264867aac1ea48b3779a

Download Submit
\ESD\Winver.exe

Filesize
1.8MB

MD5
d9ce1032fee5365065a78bbff7267883

SHA1
4c7471b47d4151908dd204303421d7c64cf4c5c6

SHA256
65d26e7c0b856832e88efefe5c2a9e767fb2a7345715bbd0a6e10f9ac2afb520

SHA512
0455364fa91c07da6fecbfb3e3fdbbbcb909e3176b5b151e3653f8b8ebffc02e14fb3471245df479b83f90cd2e1142bcff82b80555cfb3df113696b2925d9435

Download Submit
memory/416-38-0x0000000001040000-0x0000000001214000-memory.dmp

Filesize
1.8MB

Download
memory/2436-13-0x0000000000D90000-0x0000000000F64000-memory.dmp

Filesize
1.8MB

Download
memory/2436-15-0x0000000000270000-0x000000000027E000-memory.dmp

Filesize
56KB

Download
memory/2436-17-0x00000000005D0000-0x00000000005EC000-memory.dmp

Filesize
112KB

Download
memory/2436-19-0x0000000000C40000-0x0000000000C58000-memory.dmp

Filesize
96KB

Download