asyncrat | 4c1038736179e8e41ca05d45bb16a81d01f509ebb9d9051a0095ffb4b9da81ea

Analysis

max time kernel
93s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
28/01/2025, 12:07

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General

Target

4c1038736179e8e41ca05d45bb16a81d01f509ebb9d9051a0095ffb4b9da81ea.ps1
Size

170KB
MD5

ae98402f9b834ba696e9a052ce1a4e1d
SHA1

55c5faf22fafc5d9d15c3e93f72e25a75635ec5f
SHA256

4c1038736179e8e41ca05d45bb16a81d01f509ebb9d9051a0095ffb4b9da81ea
SHA512

75543b384b09f0f4ee0015ffb93e2271e6ea7c9b85d582cdd60aeaf0dcc26ca42b3190894de1a97cf3413473751c9f8f4bab4f5d0f3c5d5c2d547b5231f70e75
SSDEEP

3072:nQoHePEWgLAVVwNW5rKJNXQSiAigHJQ+cL8hDcseHcTt6tPgzGJKMsCU:nRHePEWgLOVwNW5rKJNXxvK7U

Score

10^/10

asyncrat test discovery execution rat

Malware Config

Extracted

Family

asyncrat

Version

AWS | 3Losh

Botnet

Test

81.10.39.58:7077

Mutex

AsyncMutex_alosh

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
Asyncrat family
asyncrat

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4136 set thread context of 4336	4136	powershell.exe	83

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
4136	powershell.exe

System Location Discovery: System Language Discovery 1 TTPs 1 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	aspnet_compiler.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
4136	powershell.exe
4136	powershell.exe
4336	aspnet_compiler.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4136	powershell.exe
Token: SeDebugPrivilege	4336	aspnet_compiler.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4336	aspnet_compiler.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 4136 wrote to memory of 4336	4136	powershell.exe	83
PID 4136 wrote to memory of 4336	4136	powershell.exe	83
PID 4136 wrote to memory of 4336	4136	powershell.exe	83
PID 4136 wrote to memory of 4336	4136	powershell.exe	83
PID 4136 wrote to memory of 4336	4136	powershell.exe	83
PID 4136 wrote to memory of 4336	4136	powershell.exe	83
PID 4136 wrote to memory of 4336	4136	powershell.exe	83
PID 4136 wrote to memory of 4336	4136	powershell.exe	83

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
powershell.exe -ExecutionPolicy bypass -File C:\Users\Admin\AppData\Local\Temp\4c1038736179e8e41ca05d45bb16a81d01f509ebb9d9051a0095ffb4b9da81ea.ps1
1⤵
- Suspicious use of SetThreadContext
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4136
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:4336

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

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

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_acxtfce2.gup.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/4136-17-0x00007FFA105F0000-0x00007FFA110B1000-memory.dmp

Filesize
10.8MB

Download
memory/4136-6-0x000001D4F9510000-0x000001D4F9532000-memory.dmp

Filesize
136KB

Download
memory/4136-11-0x00007FFA105F0000-0x00007FFA110B1000-memory.dmp

Filesize
10.8MB

Download
memory/4136-12-0x00007FFA105F0000-0x00007FFA110B1000-memory.dmp

Filesize
10.8MB

Download
memory/4136-13-0x000001D4F9680000-0x000001D4F968C000-memory.dmp

Filesize
48KB

Download
memory/4136-0-0x00007FFA105F3000-0x00007FFA105F5000-memory.dmp

Filesize
8KB

Download
memory/4336-18-0x00000000745AE000-0x00000000745AF000-memory.dmp

Filesize
4KB

Download
memory/4336-14-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/4336-19-0x00000000745A0000-0x0000000074D50000-memory.dmp

Filesize
7.7MB

Download
memory/4336-20-0x0000000004F70000-0x0000000004FD6000-memory.dmp

Filesize
408KB

Download
memory/4336-21-0x0000000005410000-0x00000000054AC000-memory.dmp

Filesize
624KB

Download
memory/4336-22-0x0000000005C60000-0x0000000006204000-memory.dmp

Filesize
5.6MB

Download
memory/4336-23-0x00000000059B0000-0x0000000005A42000-memory.dmp

Filesize
584KB

Download
memory/4336-24-0x0000000005990000-0x000000000599A000-memory.dmp

Filesize
40KB

Download
memory/4336-27-0x00000000745AE000-0x00000000745AF000-memory.dmp

Filesize
4KB

Download
memory/4336-28-0x00000000745A0000-0x0000000074D50000-memory.dmp

Filesize
7.7MB

Download