asyncrat | 182336fabdfbf5c8ef27830c1ded8137aaedf6f1f23d6786012ba9a7b4b1c372

General

Target

BrowserCookies.ps1
Size

1.4MB
MD5

85d801888c83fea08767b5598ea125fb
SHA1

5e836f4a4eddb093e74b314e1048086601b87aae
SHA256

182336fabdfbf5c8ef27830c1ded8137aaedf6f1f23d6786012ba9a7b4b1c372
SHA512

c4121fba26eb2bc0a1819ed6f07e87c5a1957c314ce07a837445788bd7a3e6b6a26cc347915a06f97b5892d95c608c0c9cc86f6d77d67225fbe5aa21da50cbec
SSDEEP

6144:FVy9n8urg/OLz+MNJDzO3gyCAb2eJto8j6iZT8JkcgEcLn6jgndB47mJwKyR7qW6:uO3g5tE6YCegnxBtE5Jb6NfFsAkOHwn

Score

10^/10

asyncrat xxxx_sender_xxxx discovery execution rat

Malware Config

Extracted

Family

asyncrat

Version

| Edit 3LOSH RAT

Botnet

XXxx_Sender_xxXX

C2

sendandendco.dynu.net:1967

Mutex

A@@@s#ncMutex_6Sxx@@@I8OkPnk

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 3468 set thread context of 5068	3468	powershell.exe	84

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
3468	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
1592	schtasks.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3468	powershell.exe
3468	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3468	powershell.exe
Token: SeDebugPrivilege	5068	aspnet_compiler.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 3468 wrote to memory of 1592	3468	powershell.exe	83
PID 3468 wrote to memory of 1592	3468	powershell.exe	83
PID 3468 wrote to memory of 5068	3468	powershell.exe	84
PID 3468 wrote to memory of 5068	3468	powershell.exe	84
PID 3468 wrote to memory of 5068	3468	powershell.exe	84
PID 3468 wrote to memory of 5068	3468	powershell.exe	84
PID 3468 wrote to memory of 5068	3468	powershell.exe	84
PID 3468 wrote to memory of 5068	3468	powershell.exe	84
PID 3468 wrote to memory of 5068	3468	powershell.exe	84
PID 3468 wrote to memory of 5068	3468	powershell.exe	84

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\BrowserCookies.ps1
1⤵
- Suspicious use of SetThreadContext
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3468
- C:\Windows\system32\schtasks.exe
  "C:\Windows\system32\schtasks.exe" /create /TN BrowserCaches /XML C:\Users\Admin\Documents\BrowserCaches\BrowserCache.xml
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:1592
- 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:5068

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_gztt5juj.qy1.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\Documents\BrowserCaches\BrowserCache.xml

Filesize
1KB

MD5
c0d217ab27f635f4ba334968850fc9ec

SHA1
31d20318fd4f934c294c31135ae21d9c17640f4d

SHA256
b58f7988a45e3930b698ba39ed5da616b7af8ca6739a35e6a2072fabaa7e9ecd

SHA512
778321d5c2e4911d26ad7c69f2522fee7d91d0126a2cfae3b0557177e12a4203d9fdcd3c905815db9d94e6c65053fe466558d48cdfadd79afabd3a908a2c7734

Download Submit
memory/3468-21-0x0000021535540000-0x0000021535574000-memory.dmp

Filesize
208KB

Download
memory/3468-22-0x00007FFE57050000-0x00007FFE57B11000-memory.dmp

Filesize
10.8MB

Download
memory/3468-12-0x00007FFE57050000-0x00007FFE57B11000-memory.dmp

Filesize
10.8MB

Download
memory/3468-16-0x00007FFE57053000-0x00007FFE57055000-memory.dmp

Filesize
8KB

Download
memory/3468-17-0x00007FFE57050000-0x00007FFE57B11000-memory.dmp

Filesize
10.8MB

Download
memory/3468-18-0x0000021534E80000-0x000002153509C000-memory.dmp

Filesize
2.1MB

Download
memory/3468-10-0x0000021535310000-0x0000021535332000-memory.dmp

Filesize
136KB

Download
memory/3468-20-0x00007FFE57050000-0x00007FFE57B11000-memory.dmp

Filesize
10.8MB

Download
memory/3468-0-0x00007FFE57053000-0x00007FFE57055000-memory.dmp

Filesize
8KB

Download
memory/3468-11-0x00007FFE57050000-0x00007FFE57B11000-memory.dmp

Filesize
10.8MB

Download
memory/3468-34-0x00007FFE57050000-0x00007FFE57B11000-memory.dmp

Filesize
10.8MB

Download
memory/3468-33-0x0000021534E80000-0x000002153509C000-memory.dmp

Filesize
2.1MB

Download
memory/5068-25-0x0000000074A50000-0x0000000075200000-memory.dmp

Filesize
7.7MB

Download
memory/5068-28-0x0000000005FB0000-0x000000000604C000-memory.dmp

Filesize
624KB

Download
memory/5068-29-0x0000000006600000-0x0000000006BA4000-memory.dmp

Filesize
5.6MB

Download
memory/5068-30-0x00000000060C0000-0x0000000006126000-memory.dmp

Filesize
408KB

Download
memory/5068-24-0x0000000074A5E000-0x0000000074A5F000-memory.dmp

Filesize
4KB

Download
memory/5068-23-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/5068-35-0x0000000074A5E000-0x0000000074A5F000-memory.dmp

Filesize
4KB

Download
memory/5068-36-0x0000000074A50000-0x0000000075200000-memory.dmp

Filesize
7.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads