asyncrat | b5f48fa1fd058f9e60e49ac03924d3bf7f752460bcbdaa442c79dfef9fb9f7e0

Analysis

max time kernel
137s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20240709-en
resource tags

arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
submitted
25-07-2024 00:06

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General

Target

2024-07-24_98b445bcd174036d984fdc8271595655_avoslocker.exe
Size

24.0MB
MD5

98b445bcd174036d984fdc8271595655
SHA1

25a765a9c844b28a697ef8b85874989c88f43b9f
SHA256

b5f48fa1fd058f9e60e49ac03924d3bf7f752460bcbdaa442c79dfef9fb9f7e0
SHA512

84f7d886e445264b3136dd8e996b176e519430153ddcb12bc7eed55b957696c8a5a028e3822cd7cfd77a71dc76967d8486642b381d3209d55ac8c08ee4dde818
SSDEEP

49152:ZqH7Bei/m+1q1BFx3unxRLC4PAl6mdTdUxK/ZayP3pgXWFVeVpPsSvPkD+z:M+7ZFVeVpU

Score

10^/10

asyncrat 23-julio discovery persistence rat

Malware Config

Extracted

Family

asyncrat

Version

1.0.7

Botnet

23-Julio

tenfreehse.dynuddns.net:22077

Mutex

DcRatMutex_qwqdanchun

Attributes

delay
1
install
false
install_folder
%AppData%

aes.plain

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
rat asyncrat

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1705699165-553239100-4129523827-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Mukaka = "C:\\Users\\Admin\\Documents\\Ounsa\\OOffupdater.exe툀"	2024-07-24_98b445bcd174036d984fdc8271595655_avoslocker.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2332 set thread context of 1040	2332	2024-07-24_98b445bcd174036d984fdc8271595655_avoslocker.exe	94

System Location Discovery: System Language Discovery 1 TTPs 2 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	2024-07-24_98b445bcd174036d984fdc8271595655_avoslocker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	csc.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1040	csc.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 2332 wrote to memory of 1040	2332	2024-07-24_98b445bcd174036d984fdc8271595655_avoslocker.exe	94
PID 2332 wrote to memory of 1040	2332	2024-07-24_98b445bcd174036d984fdc8271595655_avoslocker.exe	94
PID 2332 wrote to memory of 1040	2332	2024-07-24_98b445bcd174036d984fdc8271595655_avoslocker.exe	94
PID 2332 wrote to memory of 1040	2332	2024-07-24_98b445bcd174036d984fdc8271595655_avoslocker.exe	94
PID 2332 wrote to memory of 1040	2332	2024-07-24_98b445bcd174036d984fdc8271595655_avoslocker.exe	94

C:\Users\Admin\AppData\Local\Temp\2024-07-24_98b445bcd174036d984fdc8271595655_avoslocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-07-24_98b445bcd174036d984fdc8271595655_avoslocker.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2332
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:1040

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1040-15-0x00000000739E0000-0x0000000074190000-memory.dmp

Filesize
7.7MB

Download
memory/1040-13-0x0000000006DE0000-0x0000000007384000-memory.dmp

Filesize
5.6MB

Download
memory/1040-18-0x00000000739E0000-0x0000000074190000-memory.dmp

Filesize
7.7MB

Download
memory/1040-17-0x00000000739E0000-0x0000000074190000-memory.dmp

Filesize
7.7MB

Download
memory/1040-9-0x00000000739E0000-0x0000000074190000-memory.dmp

Filesize
7.7MB

Download
memory/1040-6-0x00000000014A0000-0x00000000014B2000-memory.dmp

Filesize
72KB

Download
memory/1040-16-0x00000000739EE000-0x00000000739EF000-memory.dmp

Filesize
4KB

Download
memory/1040-14-0x0000000006830000-0x0000000006896000-memory.dmp

Filesize
408KB

Download
memory/1040-8-0x00000000739EE000-0x00000000739EF000-memory.dmp

Filesize
4KB

Download
memory/1040-12-0x0000000006790000-0x000000000682C000-memory.dmp

Filesize
624KB

Download
memory/2332-1-0x0000000000400000-0x00000000005E8000-memory.dmp

Filesize
1.9MB

Download
memory/2332-7-0x0000000000400000-0x00000000005E8000-memory.dmp

Filesize
1.9MB

Download
memory/2332-0-0x0000000000400000-0x00000000005E8000-memory.dmp

Filesize
1.9MB

Download
memory/2332-5-0x0000000000400000-0x00000000005E8000-memory.dmp

Filesize
1.9MB

Download
memory/2332-3-0x0000000000407000-0x0000000000421000-memory.dmp

Filesize
104KB

Download
memory/2332-4-0x0000000000400000-0x00000000005E8000-memory.dmp

Filesize
1.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads