asyncrat | 30ad125e0d178551fc09fcc0f0fd6c196536f2118e0ea8689f5719f4d4e23b9f

Analysis

max time kernel
146s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
29-12-2024 10:37

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General

Target

b899fc7141b866552940b6ee0f8ab0d214a05c8338906fd85fae67c507d652bb.exe
Size

481KB
MD5

3bcf40a5ad0db3f29f3c6243a923e277
SHA1

5a500389d073311b3decc47819c19dd7faf56abb
SHA256

b899fc7141b866552940b6ee0f8ab0d214a05c8338906fd85fae67c507d652bb
SHA512

45ffa4c66672403220f96b58dc4bc6ac361aff38e8bb14743c63ab52659229d186a36181b7b396b024648f1f2bc54a67ca7224f1fe17cb2a4ad04d5986d78d9a
SSDEEP

6144:csFDZUi1H8vzgMU+duPOyxzWtrboPZXBR+IhQaTb5Jz/:nlH8vzgL8QJxzWqRXBR

Score

10^/10

asyncrat 26/4/22 discovery rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

26/4/22

znets.ddns.net:2000

dnets.ddns.net:2000

Mutex

mgjgjfugfrabywe7retren89i><LPO((*&*UJjiM8yn&&*N89I)(

Attributes

delay
3
install
false
install_file
Windows Utility Essentials.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
Uses the VBS compiler for execution 1 TTPs

Command and Scripting Interpreter
T1059

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3124 set thread context of 4224	3124	b899fc7141b866552940b6ee0f8ab0d214a05c8338906fd85fae67c507d652bb.exe	84

System Location Discovery: System Language Discovery 1 TTPs 2 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	b899fc7141b866552940b6ee0f8ab0d214a05c8338906fd85fae67c507d652bb.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vbc.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3124	b899fc7141b866552940b6ee0f8ab0d214a05c8338906fd85fae67c507d652bb.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 3124 wrote to memory of 4224	3124	b899fc7141b866552940b6ee0f8ab0d214a05c8338906fd85fae67c507d652bb.exe	84
PID 3124 wrote to memory of 4224	3124	b899fc7141b866552940b6ee0f8ab0d214a05c8338906fd85fae67c507d652bb.exe	84
PID 3124 wrote to memory of 4224	3124	b899fc7141b866552940b6ee0f8ab0d214a05c8338906fd85fae67c507d652bb.exe	84
PID 3124 wrote to memory of 4224	3124	b899fc7141b866552940b6ee0f8ab0d214a05c8338906fd85fae67c507d652bb.exe	84
PID 3124 wrote to memory of 4224	3124	b899fc7141b866552940b6ee0f8ab0d214a05c8338906fd85fae67c507d652bb.exe	84
PID 3124 wrote to memory of 4224	3124	b899fc7141b866552940b6ee0f8ab0d214a05c8338906fd85fae67c507d652bb.exe	84
PID 3124 wrote to memory of 4224	3124	b899fc7141b866552940b6ee0f8ab0d214a05c8338906fd85fae67c507d652bb.exe	84
PID 3124 wrote to memory of 4224	3124	b899fc7141b866552940b6ee0f8ab0d214a05c8338906fd85fae67c507d652bb.exe	84

C:\Users\Admin\AppData\Local\Temp\b899fc7141b866552940b6ee0f8ab0d214a05c8338906fd85fae67c507d652bb.exe
"C:\Users\Admin\AppData\Local\Temp\b899fc7141b866552940b6ee0f8ab0d214a05c8338906fd85fae67c507d652bb.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3124
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4224

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/3124-9-0x00000000750A0000-0x0000000075850000-memory.dmp

Filesize
7.7MB

Download
memory/3124-1-0x0000000000A40000-0x0000000000ABE000-memory.dmp

Filesize
504KB

Download
memory/3124-2-0x00000000059D0000-0x0000000005F74000-memory.dmp

Filesize
5.6MB

Download
memory/3124-3-0x00000000054C0000-0x0000000005552000-memory.dmp

Filesize
584KB

Download
memory/3124-4-0x00000000750A0000-0x0000000075850000-memory.dmp

Filesize
7.7MB

Download
memory/3124-5-0x0000000005890000-0x000000000589A000-memory.dmp

Filesize
40KB

Download
memory/3124-8-0x00000000750AE000-0x00000000750AF000-memory.dmp

Filesize
4KB

Download
memory/3124-0-0x00000000750AE000-0x00000000750AF000-memory.dmp

Filesize
4KB

Download
memory/4224-6-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/4224-7-0x00000000750A0000-0x0000000075850000-memory.dmp

Filesize
7.7MB

Download
memory/4224-10-0x00000000750A0000-0x0000000075850000-memory.dmp

Filesize
7.7MB

Download
memory/4224-11-0x00000000750A0000-0x0000000075850000-memory.dmp

Filesize
7.7MB

Download
memory/4224-12-0x00000000750A0000-0x0000000075850000-memory.dmp

Filesize
7.7MB

Download