dcrat | a6429d9778a93254c7387cf588619a2635ed97108558a122de885aad25a57eb7

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
07-12-2024 17:53

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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	2368	3744	schtasks.exe	86
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	868	3744	schtasks.exe	86
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2356	3744	schtasks.exe	86
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4188	3744	schtasks.exe	86
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4624	3744	schtasks.exe	86
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	624	3744	schtasks.exe	86
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4044	3744	schtasks.exe	86
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2180	3744	schtasks.exe	86
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1128	3744	schtasks.exe	86
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2824	3744	schtasks.exe	86
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2320	3744	schtasks.exe	86
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1764	3744	schtasks.exe	86
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2924	3744	schtasks.exe	86
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1576	3744	schtasks.exe	86
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2880	3744	schtasks.exe	86
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3836	3744	schtasks.exe	86
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	396	3744	schtasks.exe	86
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1044	3744	schtasks.exe	86

Checks computer location settings 2 TTPs 3 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-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	a6429d9778a93254c7387cf588619a2635ed97108558a122de885aad25a57eb7.exe
Key value queried	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	WScript.exe
Key value queried	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	Winver.exe

Executes dropped EXE 2 IoCs

pid	Process
1336	Winver.exe
3428	smss.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 4 IoCs

description	ioc	Process
File created	C:\Program Files\Windows Defender\conhost.exe	Winver.exe
File created	C:\Program Files\Windows Defender\088424020bedd6	Winver.exe
File created	C:\Program Files (x86)\Windows Multimedia Platform\taskhostw.exe	Winver.exe
File created	C:\Program Files (x86)\Windows Multimedia Platform\ea9f0e6c9e2dcd	Winver.exe

Drops file in Windows directory 4 IoCs

description	ioc	Process
File created	C:\Windows\uk-UA\69ddcba757bf72	Winver.exe
File created	C:\Windows\PLA\Rules\ja-JP\RuntimeBroker.exe	Winver.exe
File created	C:\Windows\PLA\Rules\ja-JP\9e8d7a4ca61bd9	Winver.exe
File created	C:\Windows\uk-UA\smss.exe	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

Modifies registry class 2 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000_Classes\Local Settings	a6429d9778a93254c7387cf588619a2635ed97108558a122de885aad25a57eb7.exe
Key created	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000_Classes\Local Settings	Winver.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
2368	schtasks.exe
4044	schtasks.exe
2320	schtasks.exe
396	schtasks.exe
1044	schtasks.exe
2356	schtasks.exe
624	schtasks.exe
1128	schtasks.exe
868	schtasks.exe
4188	schtasks.exe
4624	schtasks.exe
2824	schtasks.exe
1764	schtasks.exe
2924	schtasks.exe
2880	schtasks.exe
2180	schtasks.exe
1576	schtasks.exe
3836	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
1336	Winver.exe
1336	Winver.exe
1336	Winver.exe
1336	Winver.exe
1336	Winver.exe
1336	Winver.exe
1336	Winver.exe
1336	Winver.exe
1336	Winver.exe
1336	Winver.exe
1336	Winver.exe
1336	Winver.exe
1336	Winver.exe
1336	Winver.exe
1336	Winver.exe
1336	Winver.exe
1336	Winver.exe
1336	Winver.exe
1336	Winver.exe
1336	Winver.exe
1336	Winver.exe
1336	Winver.exe
1336	Winver.exe
1336	Winver.exe
1336	Winver.exe
1336	Winver.exe
1336	Winver.exe
1336	Winver.exe
1336	Winver.exe
1336	Winver.exe
1336	Winver.exe
1336	Winver.exe
1336	Winver.exe
1336	Winver.exe
1336	Winver.exe
1336	Winver.exe
1336	Winver.exe
1336	Winver.exe
1336	Winver.exe
1336	Winver.exe
1336	Winver.exe
1336	Winver.exe
1336	Winver.exe
1336	Winver.exe
1336	Winver.exe
1336	Winver.exe
1336	Winver.exe
1336	Winver.exe
1336	Winver.exe
1336	Winver.exe
1336	Winver.exe
1336	Winver.exe
1336	Winver.exe
1336	Winver.exe
1336	Winver.exe
1336	Winver.exe
1336	Winver.exe
1336	Winver.exe
1336	Winver.exe
1336	Winver.exe
1336	Winver.exe
1336	Winver.exe
1336	Winver.exe
1336	Winver.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1336	Winver.exe
Token: SeDebugPrivilege	3428	smss.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 4120 wrote to memory of 1468	4120	a6429d9778a93254c7387cf588619a2635ed97108558a122de885aad25a57eb7.exe	82
PID 4120 wrote to memory of 1468	4120	a6429d9778a93254c7387cf588619a2635ed97108558a122de885aad25a57eb7.exe	82
PID 4120 wrote to memory of 1468	4120	a6429d9778a93254c7387cf588619a2635ed97108558a122de885aad25a57eb7.exe	82
PID 1468 wrote to memory of 4176	1468	WScript.exe	87
PID 1468 wrote to memory of 4176	1468	WScript.exe	87
PID 1468 wrote to memory of 4176	1468	WScript.exe	87
PID 4176 wrote to memory of 1336	4176	cmd.exe	89
PID 4176 wrote to memory of 1336	4176	cmd.exe	89
PID 1336 wrote to memory of 4924	1336	Winver.exe	109
PID 1336 wrote to memory of 4924	1336	Winver.exe	109
PID 4924 wrote to memory of 2144	4924	cmd.exe	111
PID 4924 wrote to memory of 2144	4924	cmd.exe	111
PID 4924 wrote to memory of 2780	4924	cmd.exe	112
PID 4924 wrote to memory of 2780	4924	cmd.exe	112
PID 4924 wrote to memory of 3428	4924	cmd.exe	115
PID 4924 wrote to memory of 3428	4924	cmd.exe	115

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⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:4120
- C:\Windows\SysWOW64\WScript.exe
  "C:\Windows\System32\WScript.exe" "C:\ESD\UST9UxLQoHNIIFaYLHo0xhIRlgCNcLzoLb106m2nL.vbe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1468
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\ESD\bQzfgHSGdt2kLcLlkun74cHPltHDXr5Sp886hMeTP.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4176
  - - C:\ESD\Winver.exe
      "C:\ESD/Winver.exe"
      4⤵
      Checks computer location settings
      Executes dropped EXE
      Drops file in Program Files directory
      Drops file in Windows directory
      Modifies registry class
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:1336
    - - C:\Windows\System32\cmd.exe
        
        "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\akjY9J06Hp.bat"
        5⤵
        Suspicious use of WriteProcessMemory
        
        PID:4924
      - C:\Windows\system32\chcp.com
        
        chcp 65001
        6⤵
        
        PID:2144
      - C:\Windows\system32\w32tm.exe
        
        w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
        6⤵
        
        PID:2780
      - C:\Windows\uk-UA\smss.exe
        
        "C:\Windows\uk-UA\smss.exe"
        6⤵
        Executes dropped EXE
        Suspicious use of AdjustPrivilegeToken
        
        PID:3428

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 10 /tr "'C:\Windows\PLA\Rules\ja-JP\RuntimeBroker.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2368

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "RuntimeBroker" /sc ONLOGON /tr "'C:\Windows\PLA\Rules\ja-JP\RuntimeBroker.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:868

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 5 /tr "'C:\Windows\PLA\Rules\ja-JP\RuntimeBroker.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2356

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "taskhostwt" /sc MINUTE /mo 13 /tr "'C:\Program Files (x86)\Windows Multimedia Platform\taskhostw.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4188

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "taskhostw" /sc ONLOGON /tr "'C:\Program Files (x86)\Windows Multimedia Platform\taskhostw.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4624

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "taskhostwt" /sc MINUTE /mo 12 /tr "'C:\Program Files (x86)\Windows Multimedia Platform\taskhostw.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:624

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "conhostc" /sc MINUTE /mo 7 /tr "'C:\Program Files\Windows Defender\conhost.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4044

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "conhost" /sc ONLOGON /tr "'C:\Program Files\Windows Defender\conhost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2180

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "conhostc" /sc MINUTE /mo 14 /tr "'C:\Program Files\Windows Defender\conhost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1128

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "smsss" /sc MINUTE /mo 12 /tr "'C:\Windows\uk-UA\smss.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2824

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "smss" /sc ONLOGON /tr "'C:\Windows\uk-UA\smss.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2320

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "smsss" /sc MINUTE /mo 12 /tr "'C:\Windows\uk-UA\smss.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1764

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 11 /tr "'C:\Recovery\WindowsRE\RuntimeBroker.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2924

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "RuntimeBroker" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\RuntimeBroker.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1576

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 7 /tr "'C:\Recovery\WindowsRE\RuntimeBroker.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2880

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "WinverW" /sc MINUTE /mo 7 /tr "'C:\ESD\Winver.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3836

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:396

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "WinverW" /sc MINUTE /mo 5 /tr "'C:\ESD\Winver.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1044

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

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

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\akjY9J06Hp.bat

Filesize
201B

MD5
0fd2ea96b962e05937cd402061ab6cff

SHA1
d5c18a32b86ef0449c8945b8370e0b130fefa2e5

SHA256
d391d80e1abb9c1362255a3b80cc0d5b58a1087a5438256f66ac1a3e9f3e932f

SHA512
5a614f557e1f6ab9beaeb6a52308d18b9beda3531810e2c72011117923823d732919c9faf6c2dda702ae1b4d7b755a1ea3ebaadab743b1f4e90697f95c2f98af

Download Submit
memory/1336-12-0x00007FFCECC23000-0x00007FFCECC25000-memory.dmp

Filesize
8KB

Download
memory/1336-13-0x00000000004D0000-0x00000000006A4000-memory.dmp

Filesize
1.8MB

Download
memory/1336-15-0x0000000000F80000-0x0000000000F8E000-memory.dmp

Filesize
56KB

Download
memory/1336-17-0x000000001B320000-0x000000001B33C000-memory.dmp

Filesize
112KB

Download
memory/1336-18-0x000000001B6D0000-0x000000001B720000-memory.dmp

Filesize
320KB

Download
memory/1336-20-0x000000001B340000-0x000000001B358000-memory.dmp

Filesize
96KB

Download