asyncrat | 495897a0e9d55bbd06884df8b9b7c15d9c398e825538d7a235cbfb7d75d4b99e

General

Target

495897a0e9d55bbd06884df8b9b7c15d9c398e825538d7a235cbfb7d75d4b99e.exe
Size

3.6MB
MD5

81225dda9225995e9c584c9984119238
SHA1

7f468d190e9a34db1357bdbe19911c0a8d427d3c
SHA256

495897a0e9d55bbd06884df8b9b7c15d9c398e825538d7a235cbfb7d75d4b99e
SHA512

59aaa60ceb8ec54c94d1affbe39a307713c3959601ec2d53884424308d553b296b4ae093b9c7222c38e5e006d1acac15a3e1b2239d7e42f09a7bca0d3909f304
SSDEEP

49152:QWGtLBcXqxKT/msWkU0lcaX4YGamMZVE1s1bA4gK2nCR6SVb8kq4pgquLMMji4NR:UtLusqgwh4NYxtJpkxhGf333iHota

Score

10^/10

asyncrat blas-25-llegadera-paint discovery persistence rat

Malware Config

Extracted

Family

asyncrat

Version

1.0.7

Botnet

BLAS-25-LLEGADERA-PAINT

C2

puerto4001.duckdns.org:4001

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
Asyncrat family
asyncrat

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

495897a0e9d55bbd06884df8b9b7c15d9c398e825538d7a235cbfb7d75d4b99e.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2039016743-699959520-214465309-1000\Software\Microsoft\Windows\CurrentVersion\Run\BurnDesignerEditor = "C:\\Users\\Admin\\Music\\BurnDesignerUpdater\\BurnConvertVideo.exe"	495897a0e9d55bbd06884df8b9b7c15d9c398e825538d7a235cbfb7d75d4b99e.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

495897a0e9d55bbd06884df8b9b7c15d9c398e825538d7a235cbfb7d75d4b99e.exe

description	pid	process	target process
PID 2760 set thread context of 2740	2760	495897a0e9d55bbd06884df8b9b7c15d9c398e825538d7a235cbfb7d75d4b99e.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:

csc.exe495897a0e9d55bbd06884df8b9b7c15d9c398e825538d7a235cbfb7d75d4b99e.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	csc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	495897a0e9d55bbd06884df8b9b7c15d9c398e825538d7a235cbfb7d75d4b99e.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

495897a0e9d55bbd06884df8b9b7c15d9c398e825538d7a235cbfb7d75d4b99e.exe

description	pid	process	target process
PID 2760 wrote to memory of 2740	2760	495897a0e9d55bbd06884df8b9b7c15d9c398e825538d7a235cbfb7d75d4b99e.exe	csc.exe
PID 2760 wrote to memory of 2740	2760	495897a0e9d55bbd06884df8b9b7c15d9c398e825538d7a235cbfb7d75d4b99e.exe	csc.exe
PID 2760 wrote to memory of 2740	2760	495897a0e9d55bbd06884df8b9b7c15d9c398e825538d7a235cbfb7d75d4b99e.exe	csc.exe
PID 2760 wrote to memory of 2740	2760	495897a0e9d55bbd06884df8b9b7c15d9c398e825538d7a235cbfb7d75d4b99e.exe	csc.exe
PID 2760 wrote to memory of 2740	2760	495897a0e9d55bbd06884df8b9b7c15d9c398e825538d7a235cbfb7d75d4b99e.exe	csc.exe
PID 2760 wrote to memory of 2740	2760	495897a0e9d55bbd06884df8b9b7c15d9c398e825538d7a235cbfb7d75d4b99e.exe	csc.exe

C:\Users\Admin\AppData\Local\Temp\495897a0e9d55bbd06884df8b9b7c15d9c398e825538d7a235cbfb7d75d4b99e.exe
"C:\Users\Admin\AppData\Local\Temp\495897a0e9d55bbd06884df8b9b7c15d9c398e825538d7a235cbfb7d75d4b99e.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2760

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:2740

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2740-18-0x0000000000080000-0x0000000000092000-memory.dmp

Filesize
72KB

Download
memory/2740-8-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/2740-7-0x0000000000080000-0x0000000000092000-memory.dmp

Filesize
72KB

Download
memory/2740-23-0x0000000074B90000-0x000000007527E000-memory.dmp

Filesize
6.9MB

Download
memory/2740-20-0x0000000074B90000-0x000000007527E000-memory.dmp

Filesize
6.9MB

Download
memory/2740-14-0x0000000000080000-0x0000000000092000-memory.dmp

Filesize
72KB

Download
memory/2740-9-0x0000000000080000-0x0000000000092000-memory.dmp

Filesize
72KB

Download
memory/2740-19-0x0000000074B9E000-0x0000000074B9F000-memory.dmp

Filesize
4KB

Download
memory/2760-6-0x0000000000400000-0x00000000007B1000-memory.dmp

Filesize
3.7MB

Download
memory/2760-5-0x0000000000400000-0x00000000007B1000-memory.dmp

Filesize
3.7MB

Download
memory/2760-1-0x0000000000400000-0x00000000007B1000-memory.dmp

Filesize
3.7MB

Download
memory/2760-17-0x0000000000400000-0x00000000007B1000-memory.dmp

Filesize
3.7MB

Download
memory/2760-0-0x0000000000400000-0x00000000007B1000-memory.dmp

Filesize
3.7MB

Download
memory/2760-2-0x0000000000517000-0x000000000052F000-memory.dmp

Filesize
96KB

Download
memory/2760-12-0x0000000000400000-0x00000000007B1000-memory.dmp

Filesize
3.7MB

Download
memory/2760-22-0x0000000000517000-0x000000000052F000-memory.dmp

Filesize
96KB

Download
memory/2760-4-0x0000000000400000-0x00000000007B1000-memory.dmp

Filesize
3.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads