asyncrat | 4a75b767a2a204c678bd2790e45c7aca74f80c84530705127340fb7b82e87ca2

Analysis

max time kernel
14s
max time network
17s
platform
windows10-ltsc 2021_x64
resource
win10ltsc2021-20241023-en
resource tags

arch:x64arch:x86image:win10ltsc2021-20241023-enlocale:en-usos:windows10-ltsc 2021-x64system
submitted
02/12/2024, 22:05

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General

Target

file.exe
Size

149KB
MD5

92a881475c40674255bea18c1e5fbcef
SHA1

bf62aaab46c70a56152d63ff48596938cb24356e
SHA256

4a75b767a2a204c678bd2790e45c7aca74f80c84530705127340fb7b82e87ca2
SHA512

85270af1aa7fb0ad77aef0b21cf5ab858acac41a3f61595437b45886e003ac82b3c73cccba40363ef145b8b0cc27dcaef6afa283c5f579085cdba86107c4302c
SSDEEP

3072:lrEHFS+7rEkM5InknaPa9+FQ2WP3zSQ5Sj6HQOSbLkHVh4dI3T:eHR5nPYM8+QXdS3k16i3T

Score

10^/10

asyncrat default discovery rat

Malware Config

Extracted

Family

asyncrat

Version

1.0.7

Botnet

Default

man-soft.gl.at.ply.gg:15630

Mutex

DcRatMutex_qwqdanchun

Attributes

delay
1
install
true
install_file
cmd.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
behavioral1/files/0x000500000004478e-7.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-1-5-21-2319007114-3335580451-2147236418-1000\Control Panel\International\Geo\Nation	file.exe

Executes dropped EXE 1 IoCs

pid	Process
2164	myFile.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 1 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	file.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 4780 wrote to memory of 2164	4780	file.exe	83
PID 4780 wrote to memory of 2164	4780	file.exe	83

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4780
- C:\Users\Admin\AppData\Local\Temp\myFile.exe
  "C:\Users\Admin\AppData\Local\Temp\myFile.exe"
  2⤵
  - Executes dropped EXE
  PID:2164

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\myFile.exe

Filesize
79KB

MD5
5b542346d8d9b31c58b7c025030686f2

SHA1
182bc5a2c94adf62df342d9a30086a8a736dcc97

SHA256
0dc58f6ac03b96264e3b0e79bff97990c36189c4e135311d7e20b43c686889ff

SHA512
5391d672a1244c5558d90d0e5975b4d3606ba575cd5889163f52335516f5cf0b009ae1e323a2bbc96e87f324409320ee10522d78961d00bac34ce991932bfb71

Download Submit
memory/2164-19-0x00000000001B0000-0x00000000001CA000-memory.dmp

Filesize
104KB

Download
memory/2164-18-0x00007FFCF3543000-0x00007FFCF3545000-memory.dmp

Filesize
8KB

Download
memory/2164-20-0x00007FFCF3540000-0x00007FFCF4002000-memory.dmp

Filesize
10.8MB

Download
memory/2164-21-0x00007FFCF3540000-0x00007FFCF4002000-memory.dmp

Filesize
10.8MB

Download
memory/4780-0-0x0000000074A9E000-0x0000000074A9F000-memory.dmp

Filesize
4KB

Download
memory/4780-1-0x0000000000B40000-0x0000000000B48000-memory.dmp

Filesize
32KB

Download
memory/4780-3-0x0000000074A90000-0x0000000075241000-memory.dmp

Filesize
7.7MB

Download
memory/4780-22-0x0000000074A90000-0x0000000075241000-memory.dmp

Filesize
7.7MB

Download