dcrat | fa05b7f28eb1df0447998b89a08aa96453b0f3240c31489900d178862eaa80d8

Analysis

max time kernel
93s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
01-12-2024 13:21

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General

Target

Medal.exe
Size

1.8MB
MD5

4f66bbfed3a524398bd0267ed974ccbc
SHA1

b2567397dc823412d87a23428c7833ff74586b7d
SHA256

fa05b7f28eb1df0447998b89a08aa96453b0f3240c31489900d178862eaa80d8
SHA512

bc4de61adb5f56c66043a2617ebfcc9f4e82d36e48dbdc9178695f9466d554eb364d69829490ff43100e8cb457ce7e78b2e277a3cf1733edf32c0154e6f56d9f
SSDEEP

49152:q3c6UY0hj8eu32ILwfhNE5I6OrLCXLdsN:q3cvY0Z8pGWwfhyxOrUsN

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	4792	2808	schtasks.exe	82
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4544	2808	schtasks.exe	82
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4508	2808	schtasks.exe	82
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4876	2808	schtasks.exe	82
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3784	2808	schtasks.exe	82
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	992	2808	schtasks.exe	82
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3652	2808	schtasks.exe	82
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4444	2808	schtasks.exe	82
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4448	2808	schtasks.exe	82
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4312	2808	schtasks.exe	82
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	244	2808	schtasks.exe	82
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1984	2808	schtasks.exe	82
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3512	2808	schtasks.exe	82
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3516	2808	schtasks.exe	82
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	372	2808	schtasks.exe	82
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4472	2808	schtasks.exe	82
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1816	2808	schtasks.exe	82
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2476	2808	schtasks.exe	82

Checks computer location settings 2 TTPs 1 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-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	Medal.exe

Executes dropped EXE 1 IoCs

pid	Process
4060	Registry.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 5 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\Microsoft\EdgeUpdate_bk\StartMenuExperienceHost.exe	Medal.exe
File opened for modification	C:\Program Files (x86)\Microsoft\EdgeUpdate_bk\StartMenuExperienceHost.exe	Medal.exe
File created	C:\Program Files (x86)\Microsoft\EdgeUpdate_bk\55b276f4edf653	Medal.exe
File created	C:\Program Files\Google\Chrome\Application\winlogon.exe	Medal.exe
File created	C:\Program Files\Google\Chrome\Application\cc11b995f2a76d	Medal.exe

Drops file in Windows directory 3 IoCs

description	ioc	Process
File created	C:\Windows\LanguageOverlayCache\Medal.exe	Medal.exe
File created	C:\Windows\BitLockerDiscoveryVolumeContents\RuntimeBroker.exe	Medal.exe
File created	C:\Windows\BitLockerDiscoveryVolumeContents\9e8d7a4ca61bd9	Medal.exe

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

System Information Discovery
T1082

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
2644	PING.EXE

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000_Classes\Local Settings	Medal.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2644	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
4544	schtasks.exe
4876	schtasks.exe
4444	schtasks.exe
4472	schtasks.exe
4508	schtasks.exe
4448	schtasks.exe
4312	schtasks.exe
3516	schtasks.exe
1984	schtasks.exe
4792	schtasks.exe
3784	schtasks.exe
992	schtasks.exe
3652	schtasks.exe
244	schtasks.exe
3512	schtasks.exe
372	schtasks.exe
1816	schtasks.exe
2476	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
3360	Medal.exe
3360	Medal.exe
3360	Medal.exe
3360	Medal.exe
3360	Medal.exe
3360	Medal.exe
3360	Medal.exe
3360	Medal.exe
3360	Medal.exe
3360	Medal.exe
3360	Medal.exe
3360	Medal.exe
3360	Medal.exe
3360	Medal.exe
3360	Medal.exe
3360	Medal.exe
3360	Medal.exe
3360	Medal.exe
3360	Medal.exe
3360	Medal.exe
3360	Medal.exe
3360	Medal.exe
3360	Medal.exe
3360	Medal.exe
3360	Medal.exe
3360	Medal.exe
3360	Medal.exe
3360	Medal.exe
3360	Medal.exe
3360	Medal.exe
3360	Medal.exe
3360	Medal.exe
3360	Medal.exe
3360	Medal.exe
3360	Medal.exe
3360	Medal.exe
3360	Medal.exe
3360	Medal.exe
3360	Medal.exe
3360	Medal.exe
3360	Medal.exe
3360	Medal.exe
3360	Medal.exe
3360	Medal.exe
3360	Medal.exe
3360	Medal.exe
3360	Medal.exe
3360	Medal.exe
3360	Medal.exe
3360	Medal.exe
3360	Medal.exe
3360	Medal.exe
3360	Medal.exe
3360	Medal.exe
3360	Medal.exe
3360	Medal.exe
3360	Medal.exe
3360	Medal.exe
3360	Medal.exe
3360	Medal.exe
3360	Medal.exe
3360	Medal.exe
3360	Medal.exe
3360	Medal.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3360	Medal.exe
Token: SeDebugPrivilege	4060	Registry.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 3360 wrote to memory of 3000	3360	Medal.exe	101
PID 3360 wrote to memory of 3000	3360	Medal.exe	101
PID 3000 wrote to memory of 4364	3000	cmd.exe	103
PID 3000 wrote to memory of 4364	3000	cmd.exe	103
PID 3000 wrote to memory of 2644	3000	cmd.exe	104
PID 3000 wrote to memory of 2644	3000	cmd.exe	104
PID 3000 wrote to memory of 4060	3000	cmd.exe	108
PID 3000 wrote to memory of 4060	3000	cmd.exe	108

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\Medal.exe
"C:\Users\Admin\AppData\Local\Temp\Medal.exe"
1⤵
- Checks computer location settings
- 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:3360
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\DUaIzNqUdT.bat"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3000
- - C:\Windows\system32\chcp.com
    chcp 65001
    3⤵
    PID:4364
- - C:\Windows\system32\PING.EXE
    ping -n 10 localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:2644
- - C:\Recovery\WindowsRE\Registry.exe
    "C:\Recovery\WindowsRE\Registry.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:4060

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "winlogonw" /sc MINUTE /mo 7 /tr "'C:\Program Files\Google\Chrome\Application\winlogon.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4792

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "winlogon" /sc ONLOGON /tr "'C:\Program Files\Google\Chrome\Application\winlogon.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4544

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "winlogonw" /sc MINUTE /mo 9 /tr "'C:\Program Files\Google\Chrome\Application\winlogon.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4508

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 6 /tr "'C:\Windows\BitLockerDiscoveryVolumeContents\RuntimeBroker.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4876

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "RuntimeBroker" /sc ONLOGON /tr "'C:\Windows\BitLockerDiscoveryVolumeContents\RuntimeBroker.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3784

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 6 /tr "'C:\Windows\BitLockerDiscoveryVolumeContents\RuntimeBroker.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:992

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "RegistryR" /sc MINUTE /mo 8 /tr "'C:\Recovery\WindowsRE\Registry.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3652

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "Registry" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\Registry.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4444

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "RegistryR" /sc MINUTE /mo 6 /tr "'C:\Recovery\WindowsRE\Registry.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4448

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "explorere" /sc MINUTE /mo 5 /tr "'C:\Recovery\WindowsRE\explorer.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4312

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "explorer" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\explorer.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:244

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "explorere" /sc MINUTE /mo 5 /tr "'C:\Recovery\WindowsRE\explorer.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1984

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "StartMenuExperienceHostS" /sc MINUTE /mo 14 /tr "'C:\Program Files (x86)\Microsoft\EdgeUpdate_bk\StartMenuExperienceHost.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3512

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "StartMenuExperienceHost" /sc ONLOGON /tr "'C:\Program Files (x86)\Microsoft\EdgeUpdate_bk\StartMenuExperienceHost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3516

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "StartMenuExperienceHostS" /sc MINUTE /mo 10 /tr "'C:\Program Files (x86)\Microsoft\EdgeUpdate_bk\StartMenuExperienceHost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:372

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "MedalM" /sc MINUTE /mo 8 /tr "'C:\Users\Admin\AppData\Local\Temp\Medal.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4472

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "Medal" /sc ONLOGON /tr "'C:\Users\Admin\AppData\Local\Temp\Medal.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1816

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "MedalM" /sc MINUTE /mo 12 /tr "'C:\Users\Admin\AppData\Local\Temp\Medal.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2476

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 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:\Program Files\Google\Chrome\Application\winlogon.exe

Filesize
1.8MB

MD5
4f66bbfed3a524398bd0267ed974ccbc

SHA1
b2567397dc823412d87a23428c7833ff74586b7d

SHA256
fa05b7f28eb1df0447998b89a08aa96453b0f3240c31489900d178862eaa80d8

SHA512
bc4de61adb5f56c66043a2617ebfcc9f4e82d36e48dbdc9178695f9466d554eb364d69829490ff43100e8cb457ce7e78b2e277a3cf1733edf32c0154e6f56d9f

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

Filesize
162B

MD5
397719dcf08f0d0b65b85227022d490d

SHA1
fced223601fcf5f39b6704bed988abb601b530a7

SHA256
4b2dc4d2591d68e00a85f87bf2f8740d73f7524f8ed2debc5b62ecf4793e3e38

SHA512
df4eee91d132ad07ee9a8cccc30d2012d12e14709317a0cf8909a18f2a14dc7bfec49a563edd255fc55c5737fcdafbea519dd3e1664f69cffe187423ab06bc32

Download Submit
memory/3360-6-0x00000000023A0000-0x00000000023AE000-memory.dmp

Filesize
56KB

Download
memory/3360-15-0x00000000023F0000-0x00000000023FE000-memory.dmp

Filesize
56KB

Download
memory/3360-4-0x00007FFEBCFA0000-0x00007FFEBDA61000-memory.dmp

Filesize
10.8MB

Download
memory/3360-0-0x00007FFEBCFA3000-0x00007FFEBCFA5000-memory.dmp

Filesize
8KB

Download
memory/3360-7-0x00007FFEBCFA0000-0x00007FFEBDA61000-memory.dmp

Filesize
10.8MB

Download
memory/3360-8-0x00007FFEBCFA0000-0x00007FFEBDA61000-memory.dmp

Filesize
10.8MB

Download
memory/3360-10-0x0000000002420000-0x000000000243C000-memory.dmp

Filesize
112KB

Download
memory/3360-11-0x000000001AFC0000-0x000000001B010000-memory.dmp

Filesize
320KB

Download
memory/3360-13-0x000000001AF20000-0x000000001AF38000-memory.dmp

Filesize
96KB

Download
memory/3360-3-0x00007FFEBCFA0000-0x00007FFEBDA61000-memory.dmp

Filesize
10.8MB

Download
memory/3360-18-0x00007FFEBCFA0000-0x00007FFEBDA61000-memory.dmp

Filesize
10.8MB

Download
memory/3360-16-0x00007FFEBCFA0000-0x00007FFEBDA61000-memory.dmp

Filesize
10.8MB

Download
memory/3360-23-0x00007FFEBCFA0000-0x00007FFEBDA61000-memory.dmp

Filesize
10.8MB

Download
memory/3360-2-0x00007FFEBCFA0000-0x00007FFEBDA61000-memory.dmp

Filesize
10.8MB

Download
memory/3360-30-0x00007FFEBCFA0000-0x00007FFEBDA61000-memory.dmp

Filesize
10.8MB

Download
memory/3360-31-0x00007FFEBCFA0000-0x00007FFEBDA61000-memory.dmp

Filesize
10.8MB

Download
memory/3360-32-0x00007FFEBCFA0000-0x00007FFEBDA61000-memory.dmp

Filesize
10.8MB

Download
memory/3360-1-0x0000000000110000-0x00000000002EE000-memory.dmp

Filesize
1.9MB

Download
memory/3360-39-0x00007FFEBCFA0000-0x00007FFEBDA61000-memory.dmp

Filesize
10.8MB

Download