asyncrat | 74a5689041f263bcc98205573f2246a9e838f3c32f6eae0a04572ad5337820c2

Analysis

max time kernel
137s
max time network
144s
platform
windows10-2004_x64
resource
win10v2004-20230220-en
resource tags

arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
submitted
15/03/2023, 07:26

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General

Target

74A5689041F263BCC98205573F2246A9E838F3C32F6EA.exe
Size

548KB
MD5

645ce891a0b4958d7b7f8d11a415b28c
SHA1

7eb1dcde16f9b3454047ec1b18616153d43ed723
SHA256

74a5689041f263bcc98205573f2246a9e838f3c32f6eae0a04572ad5337820c2
SHA512

2423207bda55d67f962f35faa7b39aa86aa614c073e659f70ba27bba4ddaf05b10db434f6e7fdea8d87922974a92e6d6ad0f452826cacd41d90eb219cc283023
SSDEEP

12288:Urnh5CJ+sIfaZOjNLV02kfqEP3q2DkWueXGrYF7M/PiJLIYWOU1MIXnbKgv7oAQr:fMsICMjNL3xEPTk

Score

10^/10

asyncrat lux rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

lux

asnyc2020.ddns.net:2119

Mutex

kPnk

Attributes

delay
3
install
false
install_file
systme.exe
install_folder
%AppData%

aes.plain

Signatures

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

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral2/memory/3260-134-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4264 set thread context of 3260	4264	74A5689041F263BCC98205573F2246A9E838F3C32F6EA.exe	86

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
4428	timeout.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3260	RegAsm.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 4264 wrote to memory of 3260	4264	74A5689041F263BCC98205573F2246A9E838F3C32F6EA.exe	86
PID 4264 wrote to memory of 3260	4264	74A5689041F263BCC98205573F2246A9E838F3C32F6EA.exe	86
PID 4264 wrote to memory of 3260	4264	74A5689041F263BCC98205573F2246A9E838F3C32F6EA.exe	86
PID 4264 wrote to memory of 3260	4264	74A5689041F263BCC98205573F2246A9E838F3C32F6EA.exe	86
PID 4264 wrote to memory of 3260	4264	74A5689041F263BCC98205573F2246A9E838F3C32F6EA.exe	86
PID 4264 wrote to memory of 3260	4264	74A5689041F263BCC98205573F2246A9E838F3C32F6EA.exe	86
PID 4264 wrote to memory of 3260	4264	74A5689041F263BCC98205573F2246A9E838F3C32F6EA.exe	86
PID 4264 wrote to memory of 3260	4264	74A5689041F263BCC98205573F2246A9E838F3C32F6EA.exe	86
PID 3260 wrote to memory of 3792	3260	RegAsm.exe	102
PID 3260 wrote to memory of 3792	3260	RegAsm.exe	102
PID 3260 wrote to memory of 3792	3260	RegAsm.exe	102
PID 3792 wrote to memory of 4428	3792	cmd.exe	104
PID 3792 wrote to memory of 4428	3792	cmd.exe	104
PID 3792 wrote to memory of 4428	3792	cmd.exe	104

C:\Users\Admin\AppData\Local\Temp\74A5689041F263BCC98205573F2246A9E838F3C32F6EA.exe
"C:\Users\Admin\AppData\Local\Temp\74A5689041F263BCC98205573F2246A9E838F3C32F6EA.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4264
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3260
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp4E01.tmp.bat""
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:3792
  - - C:\Windows\SysWOW64\timeout.exe
      timeout 3
      4⤵
      Delays execution with timeout.exe
      PID:4428

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp4E01.tmp.bat

Filesize
170B

MD5
101eb0f4c7ec7a571aab3b4410c8342a

SHA1
872768b6d5bcc8451c2af2395e22dd3f862ca479

SHA256
ce92c4db3df3207afdf24f6c7134df3548394fa49698f3bac79de915aefc7e69

SHA512
0461fcbcdc6758f078e47296b5e72aa731e415c8962513b80c5b82e499d2d8451ad60caffb3c08d1258833b026845b44b1bbf8c3e3fb30f9bd60380300dfc446

Download Submit
memory/3260-134-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/3260-136-0x0000000005210000-0x0000000005220000-memory.dmp

Filesize
64KB

Download
memory/3260-137-0x0000000005540000-0x00000000055DC000-memory.dmp

Filesize
624KB

Download
memory/3260-138-0x0000000005B90000-0x0000000006134000-memory.dmp

Filesize
5.6MB

Download
memory/3260-139-0x0000000005650000-0x00000000056B6000-memory.dmp

Filesize
408KB

Download
memory/3260-140-0x0000000005210000-0x0000000005220000-memory.dmp

Filesize
64KB

Download
memory/3260-141-0x0000000006B00000-0x0000000006B76000-memory.dmp

Filesize
472KB

Download
memory/3260-142-0x0000000006AC0000-0x0000000006ADE000-memory.dmp

Filesize
120KB

Download
memory/3260-143-0x0000000006C30000-0x0000000006CC2000-memory.dmp

Filesize
584KB

Download
memory/4264-133-0x0000000000BD0000-0x0000000000C60000-memory.dmp

Filesize
576KB

Download