asyncrat | 752bb5f3c8ed70fd9fb166c23dd978e55e3a9e6ffee07eaf0ed6228fe3465e6a

General

Target

S.ps1
Size

706KB
MD5

373aa878a5ad94612f42d3728b1a1d27
SHA1

5106a85b484db9cc017dd31806012166321322cb
SHA256

4debdf415ed87c8f1861030788ddc601f22018344a7fa8a36dda60ffc9865034
SHA512

806e7ec64adfff5878bb1ea85dfb78516abb9de6548ee81b4f6e361e46aea756a97056a7519cd4c6fe54e8785cd75123f8807b8eb6c7c63810362cbdb4946a2d
SSDEEP

1536:PDnAsypbJ+L1yQzAfggjuoBAHMVpWzb3mCoPXhfsQpjnEq24d7U4Vq51ru2TPOWf:SEx

Score

10^/10

asyncrat movefromloader discovery execution rat

Malware Config

Extracted

Family

asyncrat

Version

| Edit 3LOSH RAT

Botnet

MoveFromLoader

C2

transfermone.dynuddns.com:9992

familyfriend.dynu.net:9992

Mutex

fgjfdghj45y6t435defsg3223523I#$%I@(@#$U@RJWEOJKROW

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 4100 set thread context of 3924	4100	powershell.exe	98

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
4100	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

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
3996	schtasks.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4100	powershell.exe
4100	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4100	powershell.exe
Token: SeDebugPrivilege	3924	aspnet_compiler.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 4100 wrote to memory of 3996	4100	powershell.exe	91
PID 4100 wrote to memory of 3996	4100	powershell.exe	91
PID 4100 wrote to memory of 3924	4100	powershell.exe	98
PID 4100 wrote to memory of 3924	4100	powershell.exe	98
PID 4100 wrote to memory of 3924	4100	powershell.exe	98
PID 4100 wrote to memory of 3924	4100	powershell.exe	98
PID 4100 wrote to memory of 3924	4100	powershell.exe	98
PID 4100 wrote to memory of 3924	4100	powershell.exe	98
PID 4100 wrote to memory of 3924	4100	powershell.exe	98
PID 4100 wrote to memory of 3924	4100	powershell.exe	98

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\S.ps1
1⤵
- Suspicious use of SetThreadContext
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4100
- C:\Windows\system32\schtasks.exe
  "C:\Windows\system32\schtasks.exe" /create /TN GooglDocsViewer /XML C:\Users\Admin\Documents\GoogleDocsDocuments\DocsView.xml
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:3996
- 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 use of AdjustPrivilegeToken
  PID:3924

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_qntsffkz.awd.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\Documents\GoogleDocsDocuments\DocsView.xml

Filesize
1KB

MD5
3fd35f7819529d5384ca78cc04ad9c7a

SHA1
e7a1930af1835f0e3bb7f2d8bbc5b219d06f7d96

SHA256
09f141d7cef90063fd0e04ecd7369986950be265a3c7656d4b4c75a8eedf762b

SHA512
d54f96a75d9c46ac286954edc52785c633efd373f5384aff6f362cf78cbc76d99532a6a9d954d26372343783740aabad77480e2a73110e03310446004c342819

Download Submit
memory/3924-25-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/3924-38-0x0000000074A90000-0x0000000075240000-memory.dmp

Filesize
7.7MB

Download
memory/3924-37-0x0000000074A9E000-0x0000000074A9F000-memory.dmp

Filesize
4KB

Download
memory/3924-32-0x0000000006420000-0x0000000006486000-memory.dmp

Filesize
408KB

Download
memory/3924-31-0x0000000006960000-0x0000000006F04000-memory.dmp

Filesize
5.6MB

Download
memory/3924-30-0x0000000006310000-0x00000000063AC000-memory.dmp

Filesize
624KB

Download
memory/3924-27-0x0000000074A90000-0x0000000075240000-memory.dmp

Filesize
7.7MB

Download
memory/3924-26-0x0000000074A9E000-0x0000000074A9F000-memory.dmp

Filesize
4KB

Download
memory/4100-16-0x00007FFD82373000-0x00007FFD82375000-memory.dmp

Filesize
8KB

Download
memory/4100-23-0x00007FFD82370000-0x00007FFD82E31000-memory.dmp

Filesize
10.8MB

Download
memory/4100-24-0x00007FFD82370000-0x00007FFD82E31000-memory.dmp

Filesize
10.8MB

Download
memory/4100-21-0x000002886E030000-0x000002886E064000-memory.dmp

Filesize
208KB

Download
memory/4100-20-0x00007FFD82370000-0x00007FFD82E31000-memory.dmp

Filesize
10.8MB

Download
memory/4100-19-0x000002886DAD0000-0x000002886DCEC000-memory.dmp

Filesize
2.1MB

Download
memory/4100-17-0x00007FFD82370000-0x00007FFD82E31000-memory.dmp

Filesize
10.8MB

Download
memory/4100-0-0x00007FFD82373000-0x00007FFD82375000-memory.dmp

Filesize
8KB

Download
memory/4100-12-0x00007FFD82370000-0x00007FFD82E31000-memory.dmp

Filesize
10.8MB

Download
memory/4100-35-0x000002886DAD0000-0x000002886DCEC000-memory.dmp

Filesize
2.1MB

Download
memory/4100-36-0x00007FFD82370000-0x00007FFD82E31000-memory.dmp

Filesize
10.8MB

Download
memory/4100-11-0x00007FFD82370000-0x00007FFD82E31000-memory.dmp

Filesize
10.8MB

Download
memory/4100-10-0x0000028855530000-0x0000028855552000-memory.dmp

Filesize
136KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads