asyncrat | 30ad125e0d178551fc09fcc0f0fd6c196536f2118e0ea8689f5719f4d4e23b9f

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

C2

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 2716 set thread context of 3016	2716	b899fc7141b866552940b6ee0f8ab0d214a05c8338906fd85fae67c507d652bb.exe	30

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	2716	b899fc7141b866552940b6ee0f8ab0d214a05c8338906fd85fae67c507d652bb.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2716 wrote to memory of 3016	2716	b899fc7141b866552940b6ee0f8ab0d214a05c8338906fd85fae67c507d652bb.exe	30
PID 2716 wrote to memory of 3016	2716	b899fc7141b866552940b6ee0f8ab0d214a05c8338906fd85fae67c507d652bb.exe	30
PID 2716 wrote to memory of 3016	2716	b899fc7141b866552940b6ee0f8ab0d214a05c8338906fd85fae67c507d652bb.exe	30
PID 2716 wrote to memory of 3016	2716	b899fc7141b866552940b6ee0f8ab0d214a05c8338906fd85fae67c507d652bb.exe	30
PID 2716 wrote to memory of 3016	2716	b899fc7141b866552940b6ee0f8ab0d214a05c8338906fd85fae67c507d652bb.exe	30
PID 2716 wrote to memory of 3016	2716	b899fc7141b866552940b6ee0f8ab0d214a05c8338906fd85fae67c507d652bb.exe	30
PID 2716 wrote to memory of 3016	2716	b899fc7141b866552940b6ee0f8ab0d214a05c8338906fd85fae67c507d652bb.exe	30
PID 2716 wrote to memory of 3016	2716	b899fc7141b866552940b6ee0f8ab0d214a05c8338906fd85fae67c507d652bb.exe	30
PID 2716 wrote to memory of 3016	2716	b899fc7141b866552940b6ee0f8ab0d214a05c8338906fd85fae67c507d652bb.exe	30

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:2716
- 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:3016

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2716-0-0x0000000074E8E000-0x0000000074E8F000-memory.dmp

Filesize
4KB

Download
memory/2716-1-0x00000000012C0000-0x000000000133E000-memory.dmp

Filesize
504KB

Download
memory/2716-2-0x0000000074E80000-0x000000007556E000-memory.dmp

Filesize
6.9MB

Download
memory/2716-21-0x0000000074E80000-0x000000007556E000-memory.dmp

Filesize
6.9MB

Download
memory/3016-11-0x0000000000180000-0x0000000000192000-memory.dmp

Filesize
72KB

Download
memory/3016-8-0x0000000000180000-0x0000000000192000-memory.dmp

Filesize
72KB

Download
memory/3016-3-0x0000000000180000-0x0000000000192000-memory.dmp

Filesize
72KB

Download
memory/3016-7-0x0000000000180000-0x0000000000192000-memory.dmp

Filesize
72KB

Download
memory/3016-9-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/3016-15-0x0000000000180000-0x0000000000192000-memory.dmp

Filesize
72KB

Download
memory/3016-10-0x0000000000180000-0x0000000000192000-memory.dmp

Filesize
72KB

Download
memory/3016-18-0x0000000000180000-0x0000000000192000-memory.dmp

Filesize
72KB

Download
memory/3016-19-0x0000000074E80000-0x000000007556E000-memory.dmp

Filesize
6.9MB

Download
memory/3016-20-0x0000000074E80000-0x000000007556E000-memory.dmp

Filesize
6.9MB

Download
memory/3016-5-0x0000000000180000-0x0000000000192000-memory.dmp

Filesize
72KB

Download
memory/3016-22-0x0000000074E80000-0x000000007556E000-memory.dmp

Filesize
6.9MB

Download

Analysis

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