asyncrat | f85e2a0cf2bf6c8f5c7657fbcd3fff12a72385d2b1382994f75853566812b0a3

Analysis

max time kernel
121s
max time network
143s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
04-06-2024 12:31

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General

Target

f85e2a0cf2bf6c8f5c7657fbcd3fff12a72385d2b1382994f75853566812b0a3.exe
Size

2.6MB
MD5

d68fc1fae579fa33ae043e67478351ef
SHA1

ce66b5234b845671adbc15b48f672104f65c8c56
SHA256

f85e2a0cf2bf6c8f5c7657fbcd3fff12a72385d2b1382994f75853566812b0a3
SHA512

49d494b6233e2124d23edc431aa0e5856d0729a829b4e832e64be64856c15c89fae9ee8810ceb6d137c6796027f1bdcb8a61b473cdeeca42ef849eaf2e3ccfb0
SSDEEP

49152:BNyP73UVWD2U8fBOcEfV2rUld+1gqB2uKR0wDUK4BGKdTtZxxxxxxxxxxP:BNyP7UVWiU8fBOccsrUlM1lEuKRD4BG8

Score

10^/10

asyncrat envio persistence rat

Malware Config

Extracted

Family

asyncrat

Version

1.0.7

Botnet

ENVIO

globalserverwindows.duckdns.org:3030

Mutex

vqBjf96qL0afw3CG-qxosg

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:

f85e2a0cf2bf6c8f5c7657fbcd3fff12a72385d2b1382994f75853566812b0a3.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Run\ters = "C:\\Users\\Admin\\Documents\\Tukansta\\butop5.exe"	f85e2a0cf2bf6c8f5c7657fbcd3fff12a72385d2b1382994f75853566812b0a3.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

f85e2a0cf2bf6c8f5c7657fbcd3fff12a72385d2b1382994f75853566812b0a3.exe

description	pid	process	target process
PID 1908 set thread context of 2540	1908	f85e2a0cf2bf6c8f5c7657fbcd3fff12a72385d2b1382994f75853566812b0a3.exe	csc.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

csc.exe

description pid process

Token: SeDebugPrivilege 2540 csc.exe

description	pid	process
Token: SeDebugPrivilege	2540	csc.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

f85e2a0cf2bf6c8f5c7657fbcd3fff12a72385d2b1382994f75853566812b0a3.exe

description	pid	process	target process
PID 1908 wrote to memory of 2540	1908	f85e2a0cf2bf6c8f5c7657fbcd3fff12a72385d2b1382994f75853566812b0a3.exe	csc.exe
PID 1908 wrote to memory of 2540	1908	f85e2a0cf2bf6c8f5c7657fbcd3fff12a72385d2b1382994f75853566812b0a3.exe	csc.exe
PID 1908 wrote to memory of 2540	1908	f85e2a0cf2bf6c8f5c7657fbcd3fff12a72385d2b1382994f75853566812b0a3.exe	csc.exe
PID 1908 wrote to memory of 2540	1908	f85e2a0cf2bf6c8f5c7657fbcd3fff12a72385d2b1382994f75853566812b0a3.exe	csc.exe
PID 1908 wrote to memory of 2540	1908	f85e2a0cf2bf6c8f5c7657fbcd3fff12a72385d2b1382994f75853566812b0a3.exe	csc.exe
PID 1908 wrote to memory of 2540	1908	f85e2a0cf2bf6c8f5c7657fbcd3fff12a72385d2b1382994f75853566812b0a3.exe	csc.exe

C:\Users\Admin\AppData\Local\Temp\f85e2a0cf2bf6c8f5c7657fbcd3fff12a72385d2b1382994f75853566812b0a3.exe
"C:\Users\Admin\AppData\Local\Temp\f85e2a0cf2bf6c8f5c7657fbcd3fff12a72385d2b1382994f75853566812b0a3.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1908

C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe"
2⤵
- Suspicious use of AdjustPrivilegeToken
PID:2540

Network

MITRE ATT&CK Matrix ATT&CK v13

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

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

memory/1908-1-0x0000000000416000-0x0000000000430000-memory.dmp

Filesize
104KB

Download
memory/1908-0-0x0000000000400000-0x0000000000693000-memory.dmp

Filesize
2.6MB

Download
memory/1908-2-0x0000000000400000-0x0000000000693000-memory.dmp

Filesize
2.6MB

Download
memory/1908-11-0x0000000000400000-0x0000000000693000-memory.dmp

Filesize
2.6MB

Download
memory/2540-8-0x0000000000080000-0x0000000000092000-memory.dmp

Filesize
72KB

Download
memory/2540-3-0x0000000000080000-0x0000000000092000-memory.dmp

Filesize
72KB

Download
memory/2540-6-0x0000000000080000-0x0000000000092000-memory.dmp

Filesize
72KB

Download
memory/2540-10-0x0000000000080000-0x0000000000092000-memory.dmp

Filesize
72KB

Download
memory/2540-4-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/2540-12-0x000000007402E000-0x000000007402F000-memory.dmp

Filesize
4KB

Download
memory/2540-13-0x0000000074020000-0x000000007470E000-memory.dmp

Filesize
6.9MB

Download
memory/2540-31-0x000000007402E000-0x000000007402F000-memory.dmp

Filesize
4KB

Download
memory/2540-32-0x0000000074020000-0x000000007470E000-memory.dmp

Filesize
6.9MB

Download