asyncrat | b010fc8a5324e8c3f72bd5884f5f31cbc02dcb9df573cf5a82405560f4927687

Analysis

max time kernel
132s
max time network
144s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
25/05/2024, 01:58

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General

Target
b010fc8a5324e8c3f72bd5884f5f31cbc02dcb9df573cf5a82405560f4927687.exe
Size 91KB
Sample240525-cdys6aaf5z
SHA256 b010fc8a5324e8c3f72bd5884f5f31cbc02dcb9df573cf5a82405560f4927687
MD5 4516d516dcf02b03d700312e4af2b58f
SHA1 8a36bd779bfba8a87b5d8ee8e6c0d7c0a4faa3ca
SHA512 0709c4069670d24c96d32f47fbf8a0eb0b3484cdce07205f5d2640b9b852fa8d0b1fda1b93d2858062ad76c44778cbc68ee831f3919e82422197c64e9a698f39
SSDEEP 1536:rMuBw+olasjN0Fu8MmiGRwOFSe4808VxdHDYIEgr69cmoLu0t0H:rMuBwsshLW/j4v8PdHsX9cmoLu0Y
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

asyncrat op rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

20.117.108.240:5612

Mutex

HssS7dvHeccj

Attributes

delay
3
install
false
install_folder
%AppData%

aes.plain

Signatures

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

Detects file containing reversed ASEP Autorun registry keys 1 IoCs

resource	yara_rule
behavioral2/memory/4872-3-0x0000000000400000-0x0000000000412000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_ASEP_REG_Reverse

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3032 set thread context of 4872	3032	b010fc8a5324e8c3f72bd5884f5f31cbc02dcb9df573cf5a82405560f4927687.exe	85

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
3032	b010fc8a5324e8c3f72bd5884f5f31cbc02dcb9df573cf5a82405560f4927687.exe
3032	b010fc8a5324e8c3f72bd5884f5f31cbc02dcb9df573cf5a82405560f4927687.exe
3032	b010fc8a5324e8c3f72bd5884f5f31cbc02dcb9df573cf5a82405560f4927687.exe
3032	b010fc8a5324e8c3f72bd5884f5f31cbc02dcb9df573cf5a82405560f4927687.exe
3032	b010fc8a5324e8c3f72bd5884f5f31cbc02dcb9df573cf5a82405560f4927687.exe
3032	b010fc8a5324e8c3f72bd5884f5f31cbc02dcb9df573cf5a82405560f4927687.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3032	b010fc8a5324e8c3f72bd5884f5f31cbc02dcb9df573cf5a82405560f4927687.exe
Token: SeDebugPrivilege	4872	RegAsm.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 3032 wrote to memory of 2904	3032	b010fc8a5324e8c3f72bd5884f5f31cbc02dcb9df573cf5a82405560f4927687.exe	82
PID 3032 wrote to memory of 2904	3032	b010fc8a5324e8c3f72bd5884f5f31cbc02dcb9df573cf5a82405560f4927687.exe	82
PID 3032 wrote to memory of 2904	3032	b010fc8a5324e8c3f72bd5884f5f31cbc02dcb9df573cf5a82405560f4927687.exe	82
PID 3032 wrote to memory of 3848	3032	b010fc8a5324e8c3f72bd5884f5f31cbc02dcb9df573cf5a82405560f4927687.exe	83
PID 3032 wrote to memory of 3848	3032	b010fc8a5324e8c3f72bd5884f5f31cbc02dcb9df573cf5a82405560f4927687.exe	83
PID 3032 wrote to memory of 3848	3032	b010fc8a5324e8c3f72bd5884f5f31cbc02dcb9df573cf5a82405560f4927687.exe	83
PID 3032 wrote to memory of 3732	3032	b010fc8a5324e8c3f72bd5884f5f31cbc02dcb9df573cf5a82405560f4927687.exe	84
PID 3032 wrote to memory of 3732	3032	b010fc8a5324e8c3f72bd5884f5f31cbc02dcb9df573cf5a82405560f4927687.exe	84
PID 3032 wrote to memory of 3732	3032	b010fc8a5324e8c3f72bd5884f5f31cbc02dcb9df573cf5a82405560f4927687.exe	84
PID 3032 wrote to memory of 4872	3032	b010fc8a5324e8c3f72bd5884f5f31cbc02dcb9df573cf5a82405560f4927687.exe	85
PID 3032 wrote to memory of 4872	3032	b010fc8a5324e8c3f72bd5884f5f31cbc02dcb9df573cf5a82405560f4927687.exe	85
PID 3032 wrote to memory of 4872	3032	b010fc8a5324e8c3f72bd5884f5f31cbc02dcb9df573cf5a82405560f4927687.exe	85
PID 3032 wrote to memory of 4872	3032	b010fc8a5324e8c3f72bd5884f5f31cbc02dcb9df573cf5a82405560f4927687.exe	85
PID 3032 wrote to memory of 4872	3032	b010fc8a5324e8c3f72bd5884f5f31cbc02dcb9df573cf5a82405560f4927687.exe	85
PID 3032 wrote to memory of 4872	3032	b010fc8a5324e8c3f72bd5884f5f31cbc02dcb9df573cf5a82405560f4927687.exe	85
PID 3032 wrote to memory of 4872	3032	b010fc8a5324e8c3f72bd5884f5f31cbc02dcb9df573cf5a82405560f4927687.exe	85
PID 3032 wrote to memory of 4872	3032	b010fc8a5324e8c3f72bd5884f5f31cbc02dcb9df573cf5a82405560f4927687.exe	85

C:\Users\Admin\AppData\Local\Temp\b010fc8a5324e8c3f72bd5884f5f31cbc02dcb9df573cf5a82405560f4927687.exe
"C:\Users\Admin\AppData\Local\Temp\b010fc8a5324e8c3f72bd5884f5f31cbc02dcb9df573cf5a82405560f4927687.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3032
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  #system32
  2⤵
  PID:2904
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  #system32
  2⤵
  PID:3848
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  #system32
  2⤵
  PID:3732
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  #system32
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:4872

Network

MITRE ATT&CK Matrix

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Downloads

memory/3032-0-0x00000000750BE000-0x00000000750BF000-memory.dmp

Download

memory/3032-1-0x00000000004C0000-0x00000000004DE000-memory.dmp

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memory/3032-2-0x00000000750B0000-0x0000000075860000-memory.dmp

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memory/3032-6-0x00000000750B0000-0x0000000075860000-memory.dmp

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memory/4872-3-0x0000000000400000-0x0000000000412000-memory.dmp

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memory/4872-5-0x00000000750B0000-0x0000000075860000-memory.dmp

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memory/4872-7-0x00000000750B0000-0x0000000075860000-memory.dmp

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memory/4872-10-0x00000000055A0000-0x000000000563C000-memory.dmp

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memory/4872-11-0x0000000005BF0000-0x0000000006194000-memory.dmp

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memory/4872-12-0x00000000056B0000-0x0000000005716000-memory.dmp

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memory/4872-13-0x00000000750B0000-0x0000000075860000-memory.dmp

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memory/4872-14-0x00000000750B0000-0x0000000075860000-memory.dmp

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