dcrat | 8daf7dcdf256d7de40d33e5550dc5e8bbf887b8c4b7f49c79a15c96dad867f82

Analysis

max time kernel
118s
max time network
150s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
24-11-2024 02:28

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General

Target

8daf7dcdf256d7de40d33e5550dc5e8bbf887b8c4b7f49c79a15c96dad867f82.exe
Size

2.1MB
MD5

f4620c0afa8e21897509b2e7215097f5
SHA1

af216ca6105e271a3fb45a23c10ee7cf3158b7e1
SHA256

8daf7dcdf256d7de40d33e5550dc5e8bbf887b8c4b7f49c79a15c96dad867f82
SHA512

68b875acc06d9c3796f49377b5b25a5e8b9a380221eea59e4274249ca7d2bff10c3fc5edf50eae5da726afea882e0e777af86af25be7b57c8fbfd70448d8d7dd
SSDEEP

49152:IBJz3c6UY0hj8eu32ILwfhNE5I6OrLCXLdsN6:yh3cvY0Z8pGWwfhyxOrUsN6

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.

Processes:

schtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exe

description	pid	pid_target	Process	procid_target
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2864	2548	schtasks.exe	35
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2640	2548	schtasks.exe	35
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3012	2548	schtasks.exe	35
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3020	2548	schtasks.exe	35
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1552	2548	schtasks.exe	35
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	544	2548	schtasks.exe	35
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1876	2548	schtasks.exe	35
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2084	2548	schtasks.exe	35
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2044	2548	schtasks.exe	35
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1016	2548	schtasks.exe	35
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2516	2548	schtasks.exe	35
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1724	2548	schtasks.exe	35
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1964	2548	schtasks.exe	35
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1940	2548	schtasks.exe	35
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2908	2548	schtasks.exe	35
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2900	2548	schtasks.exe	35
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2496	2548	schtasks.exe	35
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2116	2548	schtasks.exe	35

Executes dropped EXE 2 IoCs

Processes:

Medal.exeMedal.exe

pid	Process
2836	Medal.exe
1040	Medal.exe

Loads dropped DLL 2 IoCs

Processes:

cmd.exe

pid	Process
2716	cmd.exe
2716	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 11 IoCs

Processes:

Medal.exe

description	ioc	Process
File created	C:\Program Files\Windows Journal\es-ES\886983d96e3d3e	Medal.exe
File created	C:\Program Files (x86)\Windows Defender\en-US\services.exe	Medal.exe
File created	C:\Program Files (x86)\Windows Defender\en-US\c5b4cb5e9653cc	Medal.exe
File created	C:\Program Files (x86)\Microsoft Analysis Services\AS OLEDB\6203df4a6bafc7	Medal.exe
File created	C:\Program Files\Common Files\Services\audiodg.exe	Medal.exe
File created	C:\Program Files\Common Files\Services\42af1c969fbb7b	Medal.exe
File created	C:\Program Files\Windows Journal\es-ES\csrss.exe	Medal.exe
File opened for modification	C:\Program Files (x86)\Windows Defender\en-US\services.exe	Medal.exe
File created	C:\Program Files\Windows Mail\en-US\wininit.exe	Medal.exe
File created	C:\Program Files\Windows Mail\en-US\56085415360792	Medal.exe
File created	C:\Program Files (x86)\Microsoft Analysis Services\AS OLEDB\lsass.exe	Medal.exe

Drops file in Windows directory 1 IoCs

Processes:

Medal.exe

description	ioc	Process
File created	C:\Windows\rescache\rc0005\WmiPrvSE.exe	Medal.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

Processes:

8daf7dcdf256d7de40d33e5550dc5e8bbf887b8c4b7f49c79a15c96dad867f82.exeWScript.execmd.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	8daf7dcdf256d7de40d33e5550dc5e8bbf887b8c4b7f49c79a15c96dad867f82.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

Processes:

PING.EXE

pid	Process
1960	PING.EXE

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

Processes:

PING.EXE

pid	Process
1960	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

Processes:

pid	Process
1724	schtasks.exe
1552	schtasks.exe
1876	schtasks.exe
2084	schtasks.exe
1964	schtasks.exe
544	schtasks.exe
3020	schtasks.exe
2044	schtasks.exe
2516	schtasks.exe
2900	schtasks.exe
2496	schtasks.exe
3012	schtasks.exe
2640	schtasks.exe
1016	schtasks.exe
1940	schtasks.exe
2908	schtasks.exe
2116	schtasks.exe
2864	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

Medal.exe

pid	Process
2836	Medal.exe
2836	Medal.exe
2836	Medal.exe
2836	Medal.exe
2836	Medal.exe
2836	Medal.exe
2836	Medal.exe
2836	Medal.exe
2836	Medal.exe
2836	Medal.exe
2836	Medal.exe
2836	Medal.exe
2836	Medal.exe
2836	Medal.exe
2836	Medal.exe
2836	Medal.exe
2836	Medal.exe
2836	Medal.exe
2836	Medal.exe
2836	Medal.exe
2836	Medal.exe
2836	Medal.exe
2836	Medal.exe
2836	Medal.exe
2836	Medal.exe
2836	Medal.exe
2836	Medal.exe
2836	Medal.exe
2836	Medal.exe
2836	Medal.exe
2836	Medal.exe
2836	Medal.exe
2836	Medal.exe
2836	Medal.exe
2836	Medal.exe
2836	Medal.exe
2836	Medal.exe
2836	Medal.exe
2836	Medal.exe
2836	Medal.exe
2836	Medal.exe
2836	Medal.exe
2836	Medal.exe
2836	Medal.exe
2836	Medal.exe
2836	Medal.exe
2836	Medal.exe
2836	Medal.exe
2836	Medal.exe
2836	Medal.exe
2836	Medal.exe
2836	Medal.exe
2836	Medal.exe
2836	Medal.exe
2836	Medal.exe
2836	Medal.exe
2836	Medal.exe
2836	Medal.exe
2836	Medal.exe
2836	Medal.exe
2836	Medal.exe
2836	Medal.exe
2836	Medal.exe
2836	Medal.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Medal.exeMedal.exe

description	pid	Process
Token: SeDebugPrivilege	2836	Medal.exe
Token: SeDebugPrivilege	1040	Medal.exe

Suspicious use of WriteProcessMemory 24 IoCs

Processes:

8daf7dcdf256d7de40d33e5550dc5e8bbf887b8c4b7f49c79a15c96dad867f82.exeWScript.execmd.exeMedal.execmd.exe

description	pid	Process	procid_target
PID 2940 wrote to memory of 2384	2940	8daf7dcdf256d7de40d33e5550dc5e8bbf887b8c4b7f49c79a15c96dad867f82.exe	30
PID 2940 wrote to memory of 2384	2940	8daf7dcdf256d7de40d33e5550dc5e8bbf887b8c4b7f49c79a15c96dad867f82.exe	30
PID 2940 wrote to memory of 2384	2940	8daf7dcdf256d7de40d33e5550dc5e8bbf887b8c4b7f49c79a15c96dad867f82.exe	30
PID 2940 wrote to memory of 2384	2940	8daf7dcdf256d7de40d33e5550dc5e8bbf887b8c4b7f49c79a15c96dad867f82.exe	30
PID 2384 wrote to memory of 2716	2384	WScript.exe	32
PID 2384 wrote to memory of 2716	2384	WScript.exe	32
PID 2384 wrote to memory of 2716	2384	WScript.exe	32
PID 2384 wrote to memory of 2716	2384	WScript.exe	32
PID 2716 wrote to memory of 2836	2716	cmd.exe	34
PID 2716 wrote to memory of 2836	2716	cmd.exe	34
PID 2716 wrote to memory of 2836	2716	cmd.exe	34
PID 2716 wrote to memory of 2836	2716	cmd.exe	34
PID 2836 wrote to memory of 2312	2836	Medal.exe	54
PID 2836 wrote to memory of 2312	2836	Medal.exe	54
PID 2836 wrote to memory of 2312	2836	Medal.exe	54
PID 2312 wrote to memory of 952	2312	cmd.exe	56
PID 2312 wrote to memory of 952	2312	cmd.exe	56
PID 2312 wrote to memory of 952	2312	cmd.exe	56
PID 2312 wrote to memory of 1960	2312	cmd.exe	57
PID 2312 wrote to memory of 1960	2312	cmd.exe	57
PID 2312 wrote to memory of 1960	2312	cmd.exe	57
PID 2312 wrote to memory of 1040	2312	cmd.exe	58
PID 2312 wrote to memory of 1040	2312	cmd.exe	58
PID 2312 wrote to memory of 1040	2312	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\8daf7dcdf256d7de40d33e5550dc5e8bbf887b8c4b7f49c79a15c96dad867f82.exe
"C:\Users\Admin\AppData\Local\Temp\8daf7dcdf256d7de40d33e5550dc5e8bbf887b8c4b7f49c79a15c96dad867f82.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2940
- C:\Windows\SysWOW64\WScript.exe
  "C:\Windows\System32\WScript.exe" "C:\Medal\LziQ5Qlyzu0f0C5NtfHJq0w.vbe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2384
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c ""C:\Medal\Fua65ZRdZNJ5OJAqSXb7513NtPonCq4dK3Ubpg1B.bat" "
    3⤵
    - Loads dropped DLL
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2716
  - - C:\Medal\Medal.exe
      "C:\Medal/Medal.exe"
      4⤵
      Executes dropped EXE
      Drops file in Program Files directory
      Drops file in Windows directory
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:2836
    - - C:\Windows\System32\cmd.exe
        
        "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\B8W2aAH07C.bat"
        5⤵
        Suspicious use of WriteProcessMemory
        
        PID:2312
      - C:\Windows\system32\chcp.com
        
        chcp 65001
        6⤵
        
        PID:952
      - C:\Windows\system32\PING.EXE
        
        ping -n 10 localhost
        6⤵
        System Network Configuration Discovery: Internet Connection Discovery
        Runs ping.exe
        
        PID:1960
      - C:\Medal\Medal.exe
        
        "C:\Medal\Medal.exe"
        6⤵
        Executes dropped EXE
        Suspicious use of AdjustPrivilegeToken
        
        PID:1040

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 13 /tr "'C:\Program Files\Windows Journal\es-ES\csrss.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2864

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\Program Files\Windows Journal\es-ES\csrss.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2640

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 12 /tr "'C:\Program Files\Windows Journal\es-ES\csrss.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3012

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "audiodga" /sc MINUTE /mo 8 /tr "'C:\Program Files\Common Files\Services\audiodg.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3020

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "audiodg" /sc ONLOGON /tr "'C:\Program Files\Common Files\Services\audiodg.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1552

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "audiodga" /sc MINUTE /mo 10 /tr "'C:\Program Files\Common Files\Services\audiodg.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:544

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "lsassl" /sc MINUTE /mo 5 /tr "'C:\Program Files (x86)\Microsoft Analysis Services\AS OLEDB\lsass.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1876

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "lsass" /sc ONLOGON /tr "'C:\Program Files (x86)\Microsoft Analysis Services\AS OLEDB\lsass.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2084

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "lsassl" /sc MINUTE /mo 9 /tr "'C:\Program Files (x86)\Microsoft Analysis Services\AS OLEDB\lsass.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2044

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 5 /tr "'C:\Program Files\Windows Mail\en-US\wininit.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1016

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "wininit" /sc ONLOGON /tr "'C:\Program Files\Windows Mail\en-US\wininit.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2516

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 14 /tr "'C:\Program Files\Windows Mail\en-US\wininit.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1724

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "servicess" /sc MINUTE /mo 14 /tr "'C:\Program Files (x86)\Windows Defender\en-US\services.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1964

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "services" /sc ONLOGON /tr "'C:\Program Files (x86)\Windows Defender\en-US\services.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1940

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "servicess" /sc MINUTE /mo 14 /tr "'C:\Program Files (x86)\Windows Defender\en-US\services.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2908

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "MedalM" /sc MINUTE /mo 5 /tr "'C:\Medal\Medal.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2900

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "Medal" /sc ONLOGON /tr "'C:\Medal\Medal.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2496

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "MedalM" /sc MINUTE /mo 9 /tr "'C:\Medal\Medal.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2116

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:\Medal\Fua65ZRdZNJ5OJAqSXb7513NtPonCq4dK3Ubpg1B.bat

Filesize
63B

MD5
e24619181276af563705f4b1bed29490

SHA1
fddac27290319f69543f5330fe97c122a8a01376

SHA256
eee937e02edcd36de3ed7658c9ad9d79844502c8553a7c244b2b154aa9ffec05

SHA512
1898a5e2a52f2f34466dfd9e1b1149b36052874b6be432dd9301ecfa6bc3a964dca6980b8db54ddcf8ef24a95792efcaffeb09aceb7a04304a0d18f4d0ce0591

Download Submit
C:\Medal\LziQ5Qlyzu0f0C5NtfHJq0w.vbe

Filesize
224B

MD5
96d43070e1e39d421c53a2f8dca13fc6

SHA1
07417cccceddbf8d5f5b48dec0b2e08d53a4754f

SHA256
0dab986e5c533631946e27cdbb5147e68b9eb3008c1add60d21a59cd7d964314

SHA512
9fc0ee5ac42bca7c7ee7584baa5be6907fc750378d037d56e075a21c4fe8eaeb3efac3e9fb6087a70a6ad01dcebf05d2462f2463daa8063b4047c11e5364d398

Download Submit
C:\Users\Admin\AppData\Local\Temp\B8W2aAH07C.bat

Filesize
146B

MD5
2fb1c5824e17d2eca7dd8a9cbfd1452a

SHA1
51314f75a121ad84b0918ebfcbde8293b071eb40

SHA256
eaaa120d90c98dd63da55eebee2e97d96fa540e958ace40e9101a2e2e4c64a3f

SHA512
e9894e92ebb9b2afbdbf72e801a033e330f59c21ff5382a4d8c607f78e5754c271abce5239b604df658bab64f23df461e96013e18adf0697aa8fd860c8d031b4

Download Submit
\Medal\Medal.exe

Filesize
1.8MB

MD5
4f66bbfed3a524398bd0267ed974ccbc

SHA1
b2567397dc823412d87a23428c7833ff74586b7d

SHA256
fa05b7f28eb1df0447998b89a08aa96453b0f3240c31489900d178862eaa80d8

SHA512
bc4de61adb5f56c66043a2617ebfcc9f4e82d36e48dbdc9178695f9466d554eb364d69829490ff43100e8cb457ce7e78b2e277a3cf1733edf32c0154e6f56d9f

Download Submit
memory/1040-39-0x00000000012A0000-0x000000000147E000-memory.dmp

Filesize
1.9MB

Download
memory/2836-13-0x00000000002B0000-0x000000000048E000-memory.dmp

Filesize
1.9MB

Download
memory/2836-15-0x00000000002A0000-0x00000000002AE000-memory.dmp

Filesize
56KB

Download
memory/2836-17-0x0000000000730000-0x000000000074C000-memory.dmp

Filesize
112KB

Download
memory/2836-19-0x0000000002110000-0x0000000002128000-memory.dmp

Filesize
96KB

Download
memory/2836-21-0x0000000000710000-0x000000000071E000-memory.dmp

Filesize
56KB

Download