asyncrat | df030ea6fe53e939c3b82d36c80b9523f88523f28ac16d9b2cb53f94b6a2206c

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20250217-en
resource tags

arch:x64arch:x86image:win10v2004-20250217-enlocale:en-usos:windows10-2004-x64system
submitted
27/02/2025, 22:45

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General

Target

Client.exe
Size

48KB
MD5

fd33a667e7d1b586f0823fe05af333d9
SHA1

2afc8d658c78103acee1b9b9fb1e457d83503c6b
SHA256

df030ea6fe53e939c3b82d36c80b9523f88523f28ac16d9b2cb53f94b6a2206c
SHA512

233922d62da0e3379e3691d8bb377a763ef491e240c75f44556d0d3868d363e8c74c6aefb893c200be4c2c4cd2cbd19c83ab73641bf29f0eeee9f62470c2ea9a
SSDEEP

768:pSzTl7ILEWgg+jiAtelDSN+iV08Ybyge0LlLd2XvEgK/JUDVc6KN:pSzXIAtKDs4zb1dpLdwnkJUDVclN

Score

10^/10

asyncrat default rat

Malware Config

Extracted

Family

asyncrat

Version

1.0.7

Botnet

Default

went-startup.gl.at.ply.gg:31882

Mutex

DcRatMutex_qwqdanchun

Attributes

delay
1
install
true
install_file
Matcha_Fixer.exe
install_folder
%AppData%

aes.plain

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
rat asyncrat
Asyncrat family
asyncrat

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral2/files/0x000400000001da71-10.dat	family_asyncrat

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-1-5-21-3181990009-820930284-137514597-1000\Control Panel\International\Geo\Nation	Client.exe

Executes dropped EXE 1 IoCs

pid	Process
3892	Matcha_Fixer.exe

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

System Information Discovery
T1082

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
860	timeout.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

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

persistence execution

Scheduled Task

T1053.005

pid	Process
1368	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2480	Client.exe
2480	Client.exe
2480	Client.exe
2480	Client.exe
2480	Client.exe
2480	Client.exe
2480	Client.exe
2480	Client.exe
2480	Client.exe
2480	Client.exe
2480	Client.exe
2480	Client.exe
2480	Client.exe
2480	Client.exe
2480	Client.exe
2480	Client.exe
2480	Client.exe
2480	Client.exe
2480	Client.exe
2480	Client.exe
2480	Client.exe
2480	Client.exe
2480	Client.exe
2480	Client.exe
2480	Client.exe
2480	Client.exe
2480	Client.exe
2480	Client.exe
2480	Client.exe
2480	Client.exe
2480	Client.exe
3892	Matcha_Fixer.exe
3892	Matcha_Fixer.exe
3892	Matcha_Fixer.exe
3892	Matcha_Fixer.exe
3892	Matcha_Fixer.exe
3892	Matcha_Fixer.exe
3892	Matcha_Fixer.exe
3892	Matcha_Fixer.exe
3892	Matcha_Fixer.exe
3892	Matcha_Fixer.exe
3892	Matcha_Fixer.exe
3892	Matcha_Fixer.exe
3892	Matcha_Fixer.exe
3892	Matcha_Fixer.exe
3892	Matcha_Fixer.exe
3892	Matcha_Fixer.exe
3892	Matcha_Fixer.exe
3892	Matcha_Fixer.exe
3892	Matcha_Fixer.exe
3892	Matcha_Fixer.exe
3892	Matcha_Fixer.exe
3892	Matcha_Fixer.exe
3892	Matcha_Fixer.exe
3892	Matcha_Fixer.exe
3892	Matcha_Fixer.exe
3892	Matcha_Fixer.exe
3892	Matcha_Fixer.exe
3892	Matcha_Fixer.exe
3892	Matcha_Fixer.exe
3892	Matcha_Fixer.exe
3892	Matcha_Fixer.exe
3892	Matcha_Fixer.exe
3892	Matcha_Fixer.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2480	Client.exe
Token: SeDebugPrivilege	3892	Matcha_Fixer.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 2480 wrote to memory of 3180	2480	Client.exe	88
PID 2480 wrote to memory of 3180	2480	Client.exe	88
PID 2480 wrote to memory of 2776	2480	Client.exe	90
PID 2480 wrote to memory of 2776	2480	Client.exe	90
PID 2776 wrote to memory of 860	2776	cmd.exe	92
PID 2776 wrote to memory of 860	2776	cmd.exe	92
PID 3180 wrote to memory of 1368	3180	cmd.exe	93
PID 3180 wrote to memory of 1368	3180	cmd.exe	93
PID 2776 wrote to memory of 3892	2776	cmd.exe	94
PID 2776 wrote to memory of 3892	2776	cmd.exe	94

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\Client.exe
"C:\Users\Admin\AppData\Local\Temp\Client.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2480
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "Matcha_Fixer" /tr '"C:\Users\Admin\AppData\Roaming\Matcha_Fixer.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3180
- - C:\Windows\system32\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "Matcha_Fixer" /tr '"C:\Users\Admin\AppData\Roaming\Matcha_Fixer.exe"'
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:1368
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpB323.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2776
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:860
- - C:\Users\Admin\AppData\Roaming\Matcha_Fixer.exe
    "C:\Users\Admin\AppData\Roaming\Matcha_Fixer.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:3892

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

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpB323.tmp.bat

Filesize
156B

MD5
5df9174d8a19a718e0953892fef56533

SHA1
3d0764005ac1bfb18b99e5851a488758442bcb4f

SHA256
ce56aaf8fe604575e08f4489d2975b34b151f561bc865819b3cad6e04c013e22

SHA512
3064cc6f771e076337347045082f40ef5fa69df521d818fb6f44e045abbe0cec8182c22d0558871af0098fe8639442b859103d579596c618576e0abcd2158746

Download Submit
C:\Users\Admin\AppData\Roaming\Matcha_Fixer.exe

Filesize
48KB

MD5
fd33a667e7d1b586f0823fe05af333d9

SHA1
2afc8d658c78103acee1b9b9fb1e457d83503c6b

SHA256
df030ea6fe53e939c3b82d36c80b9523f88523f28ac16d9b2cb53f94b6a2206c

SHA512
233922d62da0e3379e3691d8bb377a763ef491e240c75f44556d0d3868d363e8c74c6aefb893c200be4c2c4cd2cbd19c83ab73641bf29f0eeee9f62470c2ea9a

Download Submit
memory/2480-0-0x00007FFF3B053000-0x00007FFF3B055000-memory.dmp

Filesize
8KB

Download
memory/2480-1-0x0000000000340000-0x0000000000352000-memory.dmp

Filesize
72KB

Download
memory/2480-2-0x00007FFF3B050000-0x00007FFF3BB11000-memory.dmp

Filesize
10.8MB

Download
memory/2480-7-0x00007FFF3B050000-0x00007FFF3BB11000-memory.dmp

Filesize
10.8MB

Download