asyncrat | f965cd05f33977ad6ae1df5832766edf0846d4adc976aa0dfe89e7ff80e9b828

Analysis

max time kernel
149s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
19/04/2024, 15:10

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General

Target
e0c75272441cfaa0d0544851bf63905460cd1c799c510242538bb36e988a55aa.ps1
Size 260KB
Sample240419-ske8dsfd96
SHA256 e0c75272441cfaa0d0544851bf63905460cd1c799c510242538bb36e988a55aa
MD5 dde9873dd1d37a271ddd0e4536e02247
SHA1 b362af9bea75c7e774ca992e9e14fff103500c1c
SHA512 7e9bc087b1ca0595b85cf767140afc655d354bab4c49308a3f118fce69e6c4f337adecc729bd0138ab639f8a698f1bc3356c8e78a5afec24becc021089a2c5e9
SSDEEP 6144:XpMjwVulPAowmGcAh3ApNZezLPgSHV04nxT:aj2uzsVZ
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

asyncrat default rat

Malware Config

Extracted

Family

asyncrat

Version

| Edit 3LOSH RAT

Botnet

Default

185.81.157.135:7777

Mutex

AsyncMutex_6SI8OkPnk

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

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3804 set thread context of 4396	3804	powershell.exe	90

Suspicious behavior: EnumeratesProcesses 7 IoCs

pid	Process
3804	powershell.exe
3804	powershell.exe
3804	powershell.exe
3804	powershell.exe
3804	powershell.exe
3804	powershell.exe
4396	aspnet_compiler.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3804	powershell.exe
Token: SeDebugPrivilege	4396	aspnet_compiler.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4396	aspnet_compiler.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 3804 wrote to memory of 5096	3804	powershell.exe	88
PID 3804 wrote to memory of 5096	3804	powershell.exe	88
PID 3804 wrote to memory of 5096	3804	powershell.exe	88
PID 3804 wrote to memory of 3908	3804	powershell.exe	89
PID 3804 wrote to memory of 3908	3804	powershell.exe	89
PID 3804 wrote to memory of 3908	3804	powershell.exe	89
PID 3804 wrote to memory of 4396	3804	powershell.exe	90
PID 3804 wrote to memory of 4396	3804	powershell.exe	90
PID 3804 wrote to memory of 4396	3804	powershell.exe	90
PID 3804 wrote to memory of 4396	3804	powershell.exe	90
PID 3804 wrote to memory of 4396	3804	powershell.exe	90
PID 3804 wrote to memory of 4396	3804	powershell.exe	90
PID 3804 wrote to memory of 4396	3804	powershell.exe	90
PID 3804 wrote to memory of 4396	3804	powershell.exe	90
PID 3804 wrote to memory of 2320	3804	powershell.exe	91
PID 3804 wrote to memory of 2320	3804	powershell.exe	91

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
powershell.exe -ExecutionPolicy bypass -File C:\Users\Admin\AppData\Local\Temp\e0c75272441cfaa0d0544851bf63905460cd1c799c510242538bb36e988a55aa.ps1
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3804
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
  2⤵
  PID:5096
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
  2⤵
  PID:3908
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:4396
- C:\Windows\system32\schtasks.exe
  "C:\Windows\system32\schtasks.exe" /delete /tn det /f
  2⤵
  PID:2320

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

__PSScriptPolicyTest_cjslajw0.jse.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_cjslajw0.jse.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
MD5 SHA1 SHA512

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memory/3804-18-0x00007FFB274C0000-0x00007FFB27F81000-memory.dmp

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memory/3804-6-0x0000022BA3B60000-0x0000022BA3B82000-memory.dmp

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memory/3804-11-0x0000022BA3B50000-0x0000022BA3B60000-memory.dmp

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memory/3804-12-0x0000022BA3B50000-0x0000022BA3B60000-memory.dmp

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memory/3804-13-0x0000022BA3B30000-0x0000022BA3B4A000-memory.dmp

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memory/3804-15-0x0000022BA3B50000-0x0000022BA3B60000-memory.dmp

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memory/3804-10-0x00007FFB274C0000-0x00007FFB27F81000-memory.dmp

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memory/4396-21-0x0000000005C40000-0x00000000061E4000-memory.dmp

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memory/4396-14-0x0000000000400000-0x0000000000416000-memory.dmp

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memory/4396-20-0x0000000002EE0000-0x0000000002EF0000-memory.dmp

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memory/4396-19-0x00000000746D0000-0x0000000074E80000-memory.dmp

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memory/4396-22-0x0000000005880000-0x0000000005912000-memory.dmp

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memory/4396-23-0x0000000005A10000-0x0000000005A1A000-memory.dmp

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memory/4396-24-0x00000000746D0000-0x0000000074E80000-memory.dmp

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memory/4396-25-0x0000000002EE0000-0x0000000002EF0000-memory.dmp

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