asyncrat | 545a7ed0b67b21d80b7b779123e38a3600f7daaa0e7ce63c20d2ad9e155391e3

Analysis

max time kernel
170s
max time network
174s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
18-10-2024 02:23

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General

Target

Informacion_Legal.N°26626..exe
Size

2.5MB
MD5

49ec7b0a10c0c2fddf8ee9931e220a87
SHA1

54389b474b33191afaf45fb464199f1a3089154a
SHA256

edd192a65b9a5d7df1076294077e896a872bf8c6c1ab8799415f1ddaf32e0144
SHA512

12b51b3782016b178b963ac7d598baf66b1c14bd04d5171c568ee82eea5f5e51fadace586053f726eb894c8f8a1dc2027e80d1e8aab5284c00c55f0705ff83a0
SSDEEP

24576:oaF026oYvOqQcttZV3XzAsBahnBiSjNUwauYGA7oQb7dTcb+f9Gj4cEpFCkhzrE9:POOwtpahnESjNGv77TkmGSXEhN3U9o

Score

10^/10

asyncrat z-oct-16 discovery persistence rat

Malware Config

Extracted

Family

asyncrat

Version

1.0.7

Botnet

Z-Oct-16

pt4040.4cloud.click:4004

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

Processes:

Informacion_Legal.N°26626..exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\TechDesignerEditor = "C:\\Users\\Admin\\Music\\TechDesignerUpdater\\TechConvertVideo.exe"	Informacion_Legal.N°26626..exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

Informacion_Legal.N°26626..exe

description pid process target process

PID 2720 set thread context of 2672 2720 Informacion_Legal.N°26626..exe csc.exe

description	pid	process	target process
PID 2720 set thread context of 2672	2720	Informacion_Legal.N°26626..exe	csc.exe

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

Processes:

Informacion_Legal.N°26626..execsc.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Informacion_Legal.N°26626..exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	csc.exe

Suspicious use of WriteProcessMemory 5 IoCs

Processes:

Informacion_Legal.N°26626..exe

description	pid	process	target process
PID 2720 wrote to memory of 2672	2720	Informacion_Legal.N°26626..exe	csc.exe
PID 2720 wrote to memory of 2672	2720	Informacion_Legal.N°26626..exe	csc.exe
PID 2720 wrote to memory of 2672	2720	Informacion_Legal.N°26626..exe	csc.exe
PID 2720 wrote to memory of 2672	2720	Informacion_Legal.N°26626..exe	csc.exe
PID 2720 wrote to memory of 2672	2720	Informacion_Legal.N°26626..exe	csc.exe

C:\Users\Admin\AppData\Local\Temp\Informacion_Legal.N°26626..exe
"C:\Users\Admin\AppData\Local\Temp\Informacion_Legal.N°26626..exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2720

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
PID:2672

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

Replay Monitor

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Downloads

memory/2672-8-0x00000000007E0000-0x00000000007F2000-memory.dmp

Filesize
72KB

Download
memory/2672-16-0x0000000073A10000-0x00000000741C0000-memory.dmp

Filesize
7.7MB

Download
memory/2672-13-0x0000000073A10000-0x00000000741C0000-memory.dmp

Filesize
7.7MB

Download
memory/2672-12-0x0000000073A1E000-0x0000000073A1F000-memory.dmp

Filesize
4KB

Download
memory/2720-9-0x0000000000400000-0x00000000006A5000-memory.dmp

Filesize
2.6MB

Download
memory/2720-6-0x0000000000400000-0x00000000006A5000-memory.dmp

Filesize
2.6MB

Download
memory/2720-0-0x0000000000400000-0x00000000006A5000-memory.dmp

Filesize
2.6MB

Download
memory/2720-7-0x0000000000400000-0x00000000006A5000-memory.dmp

Filesize
2.6MB

Download
memory/2720-5-0x0000000000400000-0x00000000006A5000-memory.dmp

Filesize
2.6MB

Download
memory/2720-11-0x0000000000400000-0x00000000006A5000-memory.dmp

Filesize
2.6MB

Download
memory/2720-1-0x0000000000400000-0x00000000006A5000-memory.dmp

Filesize
2.6MB

Download
memory/2720-3-0x0000000000400000-0x00000000006A5000-memory.dmp

Filesize
2.6MB

Download
memory/2720-15-0x0000000000511000-0x0000000000529000-memory.dmp

Filesize
96KB

Download
memory/2720-2-0x0000000000511000-0x0000000000529000-memory.dmp

Filesize
96KB

Download