asyncrat | 3b8fc9046c06420b3382cf851595370e4bb75ad0330c44515ad6bedb286dbfc7

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
18-12-2024 09:20

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General

Target

xxx.ps1
Size

2.0MB
MD5

4e71954ab5a47de9f74938dc0cd3c84f
SHA1

781b4cffead59d083d301c7eec7d55250b5a4317
SHA256

3b8fc9046c06420b3382cf851595370e4bb75ad0330c44515ad6bedb286dbfc7
SHA512

3a44a383686308352a5499d21a30317c61ea8caa81145001af22f5de536a2f3e73da43fafca53696be3923e86bb8780e5b503c3e5f379c1407362fca3909cd80
SSDEEP

24576:bSgmuyXfET5YN3b2LLG1z/7E4/KpdMJczdsrbIm:biMSNKLq1zjAU

Score

10^/10

asyncrat mugz_new discovery execution rat

Malware Config

Extracted

Family

asyncrat

Version

A 12

Botnet

MuGz_New

sasaa.kozow.com:6606

Mutex

AsyncMutex_fsasaa.kozow.com

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

Executes dropped EXE 2 IoCs

pid	Process
3164	AutoHotkey64.exe
4404	AutoHotkey64.exe

Suspicious use of SetThreadContext 7 IoCs

description	pid	Process	procid_target
PID 3164 set thread context of 3052	3164	AutoHotkey64.exe	87
PID 3164 set thread context of 428	3164	AutoHotkey64.exe	88
PID 3164 set thread context of 2864	3164	AutoHotkey64.exe	90
PID 4404 set thread context of 4936	4404	AutoHotkey64.exe	110
PID 4404 set thread context of 4508	4404	AutoHotkey64.exe	111
PID 4404 set thread context of 4728	4404	AutoHotkey64.exe	112
PID 4404 set thread context of 1628	4404	AutoHotkey64.exe	113

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
4060	powershell.exe

System Location Discovery: System Language Discovery 1 TTPs 7 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	AddInProcess32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	AddInProcess32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	AddInProcess32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	AddInProcess32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	AddInProcess32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	AddInProcess32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	AddInProcess32.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
900	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
4060	powershell.exe
4060	powershell.exe
3164	AutoHotkey64.exe
3164	AutoHotkey64.exe
3164	AutoHotkey64.exe
3164	AutoHotkey64.exe
2864	AddInProcess32.exe
4404	AutoHotkey64.exe
4404	AutoHotkey64.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4060	powershell.exe
Token: SeDebugPrivilege	2864	AddInProcess32.exe

Suspicious use of FindShellTrayWindow 4 IoCs

pid	Process
3164	AutoHotkey64.exe
3164	AutoHotkey64.exe
4404	AutoHotkey64.exe
4404	AutoHotkey64.exe

Suspicious use of SendNotifyMessage 4 IoCs

pid	Process
3164	AutoHotkey64.exe
3164	AutoHotkey64.exe
4404	AutoHotkey64.exe
4404	AutoHotkey64.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2864	AddInProcess32.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 4060 wrote to memory of 3164	4060	powershell.exe	84
PID 4060 wrote to memory of 3164	4060	powershell.exe	84
PID 4060 wrote to memory of 900	4060	powershell.exe	85
PID 4060 wrote to memory of 900	4060	powershell.exe	85
PID 3164 wrote to memory of 400	3164	AutoHotkey64.exe	86
PID 3164 wrote to memory of 400	3164	AutoHotkey64.exe	86
PID 3164 wrote to memory of 400	3164	AutoHotkey64.exe	86
PID 3164 wrote to memory of 3052	3164	AutoHotkey64.exe	87
PID 3164 wrote to memory of 3052	3164	AutoHotkey64.exe	87
PID 3164 wrote to memory of 3052	3164	AutoHotkey64.exe	87
PID 3164 wrote to memory of 3052	3164	AutoHotkey64.exe	87
PID 3164 wrote to memory of 3052	3164	AutoHotkey64.exe	87
PID 3164 wrote to memory of 3052	3164	AutoHotkey64.exe	87
PID 3164 wrote to memory of 3052	3164	AutoHotkey64.exe	87
PID 3164 wrote to memory of 3052	3164	AutoHotkey64.exe	87
PID 3164 wrote to memory of 428	3164	AutoHotkey64.exe	88
PID 3164 wrote to memory of 428	3164	AutoHotkey64.exe	88
PID 3164 wrote to memory of 428	3164	AutoHotkey64.exe	88
PID 3164 wrote to memory of 428	3164	AutoHotkey64.exe	88
PID 3164 wrote to memory of 428	3164	AutoHotkey64.exe	88
PID 3164 wrote to memory of 428	3164	AutoHotkey64.exe	88
PID 3164 wrote to memory of 428	3164	AutoHotkey64.exe	88
PID 3164 wrote to memory of 428	3164	AutoHotkey64.exe	88
PID 3164 wrote to memory of 964	3164	AutoHotkey64.exe	89
PID 3164 wrote to memory of 964	3164	AutoHotkey64.exe	89
PID 3164 wrote to memory of 964	3164	AutoHotkey64.exe	89
PID 3164 wrote to memory of 2864	3164	AutoHotkey64.exe	90
PID 3164 wrote to memory of 2864	3164	AutoHotkey64.exe	90
PID 3164 wrote to memory of 2864	3164	AutoHotkey64.exe	90
PID 3164 wrote to memory of 2864	3164	AutoHotkey64.exe	90
PID 3164 wrote to memory of 2864	3164	AutoHotkey64.exe	90
PID 3164 wrote to memory of 2864	3164	AutoHotkey64.exe	90
PID 3164 wrote to memory of 2864	3164	AutoHotkey64.exe	90
PID 3164 wrote to memory of 2864	3164	AutoHotkey64.exe	90
PID 4404 wrote to memory of 4936	4404	AutoHotkey64.exe	110
PID 4404 wrote to memory of 4936	4404	AutoHotkey64.exe	110
PID 4404 wrote to memory of 4936	4404	AutoHotkey64.exe	110
PID 4404 wrote to memory of 4936	4404	AutoHotkey64.exe	110
PID 4404 wrote to memory of 4936	4404	AutoHotkey64.exe	110
PID 4404 wrote to memory of 4936	4404	AutoHotkey64.exe	110
PID 4404 wrote to memory of 4936	4404	AutoHotkey64.exe	110
PID 4404 wrote to memory of 4936	4404	AutoHotkey64.exe	110
PID 4404 wrote to memory of 4508	4404	AutoHotkey64.exe	111
PID 4404 wrote to memory of 4508	4404	AutoHotkey64.exe	111
PID 4404 wrote to memory of 4508	4404	AutoHotkey64.exe	111
PID 4404 wrote to memory of 4508	4404	AutoHotkey64.exe	111
PID 4404 wrote to memory of 4508	4404	AutoHotkey64.exe	111
PID 4404 wrote to memory of 4508	4404	AutoHotkey64.exe	111
PID 4404 wrote to memory of 4508	4404	AutoHotkey64.exe	111
PID 4404 wrote to memory of 4508	4404	AutoHotkey64.exe	111
PID 4404 wrote to memory of 4728	4404	AutoHotkey64.exe	112
PID 4404 wrote to memory of 4728	4404	AutoHotkey64.exe	112
PID 4404 wrote to memory of 4728	4404	AutoHotkey64.exe	112
PID 4404 wrote to memory of 4728	4404	AutoHotkey64.exe	112
PID 4404 wrote to memory of 4728	4404	AutoHotkey64.exe	112
PID 4404 wrote to memory of 4728	4404	AutoHotkey64.exe	112
PID 4404 wrote to memory of 4728	4404	AutoHotkey64.exe	112
PID 4404 wrote to memory of 4728	4404	AutoHotkey64.exe	112
PID 4404 wrote to memory of 1628	4404	AutoHotkey64.exe	113
PID 4404 wrote to memory of 1628	4404	AutoHotkey64.exe	113
PID 4404 wrote to memory of 1628	4404	AutoHotkey64.exe	113
PID 4404 wrote to memory of 1628	4404	AutoHotkey64.exe	113
PID 4404 wrote to memory of 1628	4404	AutoHotkey64.exe	113
PID 4404 wrote to memory of 1628	4404	AutoHotkey64.exe	113

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\xxx.ps1
1⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4060
- C:\Users\Public\Documents\AutoHotkey64.exe
  "C:\Users\Public\Documents\AutoHotkey64.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of WriteProcessMemory
  PID:3164
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe"
    3⤵
    PID:400
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:3052
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:428
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe"
    3⤵
    PID:964
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:2864
- C:\Windows\system32\schtasks.exe
  "C:\Windows\system32\schtasks.exe" /create /tn 3losh /tr C:\Users\Public\Documents\AutoHotkey64.exe /sc minute /mo 2 /st 09:22 /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:900

C:\Users\Public\Documents\AutoHotkey64.exe
C:\Users\Public\Documents\AutoHotkey64.exe
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:4404
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4936
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4508
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4728
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1628
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe"
  2⤵
  PID:920

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

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\Microsoft\CLR_v4.0_32\UsageLogs\AddInProcess32.exe.log

Filesize
425B

MD5
4eaca4566b22b01cd3bc115b9b0b2196

SHA1
e743e0792c19f71740416e7b3c061d9f1336bf94

SHA256
34ba0ab8d1850e7825763f413142a333ccbc05fa2b5499a28a7d27b8a1c5b4bb

SHA512
bc2b1bf45203e3bb3009a7d37617b8f0f7ffa613680b32de2b963e39d2cf1650614d7035a0cf78f35a4f5cb17a2a439e2e07deaefd2a4275a62efd0a5c0184a1

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ge0qsbtb.eni.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Public\Documents\A.txt

Filesize
272KB

MD5
4bfa7384c7f4e87897bbeea936d09b8c

SHA1
d7cca921fa1882fab95ba13ed7c9ccadb8d8b582

SHA256
dc25bb34493e3d16fc0cec229afe3827908c4f9025f9af96a694e2efcfd598c6

SHA512
7494a11541335526c8f5b37509466bb50c148a0e6b86f97227b9e37dfe7d7c0b58e4f357fa52d7acee12fc506b84008ec9ddd28077a2f400a5b42b9c4373ac9f

Download Submit
C:\Users\Public\Documents\AutoHotkey64.ahk

Filesize
6KB

MD5
a51d3cc02396652ac39de494e7d725d6

SHA1
e4659a4561ac38659f7786f78485086aa1573036

SHA256
d2fb28bbafa9b105bed3334225778451529cbb2f847594021cccfab7f7d69c5d

SHA512
a4d2d3ca7d4d7ca7dcdcd8f7a46004ade1cff22f335b488972070d83602fb30d0b684fda4cd2677ccefb7afdabceb1d642152759b2f6c1796f3011dad272dda8

Download Submit
C:\Users\Public\Documents\AutoHotkey64.exe

Filesize
1.3MB

MD5
2d0600fe2b1b3bdc45d833ca32a37fdb

SHA1
e9a7411bfef54050de3b485833556f84cabd6e41

SHA256
effdea83c6b7a1dc2ce9e9d40e91dfd59bed9fcbd580903423648b7ca97d9696

SHA512
9891cd6d2140c3a5c20d5c2d6600f3655df437b99b09ae0f9daf1983190dc73385cc87f02508997bb696ac921eee43fccdf1dc210cc602938807bdb062ce1703

Download Submit
memory/2864-42-0x0000000006AE0000-0x0000000006B46000-memory.dmp

Filesize
408KB

Download
memory/2864-41-0x0000000007020000-0x00000000070BC000-memory.dmp

Filesize
624KB

Download
memory/2864-38-0x0000000005D40000-0x0000000005D4A000-memory.dmp

Filesize
40KB

Download
memory/2864-37-0x0000000005D60000-0x0000000005DF2000-memory.dmp

Filesize
584KB

Download
memory/2864-36-0x0000000006130000-0x00000000066D4000-memory.dmp

Filesize
5.6MB

Download
memory/3052-33-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/4060-31-0x00007FFD0BD50000-0x00007FFD0C811000-memory.dmp

Filesize
10.8MB

Download
memory/4060-0-0x00007FFD0BD53000-0x00007FFD0BD55000-memory.dmp

Filesize
8KB

Download
memory/4060-15-0x000001AE4A4F0000-0x000001AE4A50E000-memory.dmp

Filesize
120KB

Download
memory/4060-14-0x00007FFD0BD50000-0x00007FFD0C811000-memory.dmp

Filesize
10.8MB

Download
memory/4060-13-0x000001AE4A7C0000-0x000001AE4A836000-memory.dmp

Filesize
472KB

Download
memory/4060-12-0x00007FFD0BD50000-0x00007FFD0C811000-memory.dmp

Filesize
10.8MB

Download
memory/4060-11-0x00007FFD0BD50000-0x00007FFD0C811000-memory.dmp

Filesize
10.8MB

Download
memory/4060-6-0x000001AE2FE80000-0x000001AE2FEA2000-memory.dmp

Filesize
136KB

Download