asyncrat | b706de1b9f7ef2d7f6c4d5fddd9525d907a7a0fdb087d98c4a01589f6178edc7

Analysis

max time kernel
82s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
submitted
08-02-2023 21:16

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

iFYEJ.exe
Size

2.5MB
MD5

acfe53c70928d44f9cf498495145ec84
SHA1

2a12b327d4e5628904cc25c5f134732d6265e662
SHA256

b706de1b9f7ef2d7f6c4d5fddd9525d907a7a0fdb087d98c4a01589f6178edc7
SHA512

345143bcc9895282d2843efee182eb07bc0d0179c0c1e6ffcdd7ff9f1d44c252ffccb1b56c2b48c70b554f3427f6a1c23a6ea6b1c9e76edcbe655e88e247741c
SSDEEP

49152:Gg8nNv+SzYW4ZOUB5hempuE8OOTRmgysj8k4:Gg8h14

Score

10^/10

asyncrat default rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

Default

89.117.21.143:6606

89.117.21.143:7707

89.117.21.143:8808

Mutex

AsyncMutex_6SI8OkPnk

Attributes

delay
3
install
false
install_folder
%AppData%

aes.plain

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers.
rat asyncrat

Async RAT payload 1 IoCs

rat

Processes:

resource	yara_rule
behavioral2/memory/3772-137-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat

Uses the VBS compiler for execution 1 TTPs

Scripting
T1064
Suspicious use of SetThreadContext 1 IoCs

Processes:

iFYEJ.exe

description pid process target process

PID 4396 set thread context of 3772 4396 iFYEJ.exe vbc.exe
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exe

pid process

3076 schtasks.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

iFYEJ.exevbc.exe

description pid process

Token: SeDebugPrivilege 4396 iFYEJ.exe
Token: SeDebugPrivilege 3772 vbc.exe

description	pid	process	target process
PID 4396 set thread context of 3772	4396	iFYEJ.exe	vbc.exe

pid	process
3076	schtasks.exe

description	pid	process
Token: SeDebugPrivilege	4396	iFYEJ.exe
Token: SeDebugPrivilege	3772	vbc.exe

Suspicious use of WriteProcessMemory 14 IoCs

Processes:

iFYEJ.execmd.exe

description	pid	process	target process
PID 4396 wrote to memory of 3952	4396	iFYEJ.exe	cmd.exe
PID 4396 wrote to memory of 3952	4396	iFYEJ.exe	cmd.exe
PID 4396 wrote to memory of 3952	4396	iFYEJ.exe	cmd.exe
PID 3952 wrote to memory of 3076	3952	cmd.exe	schtasks.exe
PID 3952 wrote to memory of 3076	3952	cmd.exe	schtasks.exe
PID 3952 wrote to memory of 3076	3952	cmd.exe	schtasks.exe
PID 4396 wrote to memory of 3772	4396	iFYEJ.exe	vbc.exe
PID 4396 wrote to memory of 3772	4396	iFYEJ.exe	vbc.exe
PID 4396 wrote to memory of 3772	4396	iFYEJ.exe	vbc.exe
PID 4396 wrote to memory of 3772	4396	iFYEJ.exe	vbc.exe
PID 4396 wrote to memory of 3772	4396	iFYEJ.exe	vbc.exe
PID 4396 wrote to memory of 3772	4396	iFYEJ.exe	vbc.exe
PID 4396 wrote to memory of 3772	4396	iFYEJ.exe	vbc.exe
PID 4396 wrote to memory of 3772	4396	iFYEJ.exe	vbc.exe

C:\Users\Admin\AppData\Local\Temp\iFYEJ.exe
"C:\Users\Admin\AppData\Local\Temp\iFYEJ.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4396

C:\Windows\SysWOW64\cmd.exe
"cmd" /C schtasks /create /tn \oFNTE /tr "C:\Users\Admin\AppData\Local\Temp\iFYEJ.exe" /st 00:00 /du 9999:59 /sc once /ri 60 /f
2⤵
- Suspicious use of WriteProcessMemory
PID:3952

C:\Windows\SysWOW64\schtasks.exe
schtasks /create /tn \oFNTE /tr "C:\Users\Admin\AppData\Local\Temp\iFYEJ.exe" /st 00:00 /du 9999:59 /sc once /ri 60 /f
3⤵
- Creates scheduled task(s)
PID:3076

C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
2⤵
- Suspicious use of AdjustPrivilegeToken
PID:3772

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scripting

T1064

Scheduled Task

T1053

Persistence

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Scripting

T1064

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/3076-135-0x0000000000000000-mapping.dmp

Download
memory/3772-136-0x0000000000000000-mapping.dmp

Download
memory/3772-137-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/3772-138-0x0000000005710000-0x00000000057AC000-memory.dmp

Filesize
624KB

Download
memory/3772-139-0x0000000005820000-0x0000000005886000-memory.dmp

Filesize
408KB

Download
memory/3952-134-0x0000000000000000-mapping.dmp

Download
memory/4396-132-0x00000000003C0000-0x0000000000648000-memory.dmp

Filesize
2.5MB

Download
memory/4396-133-0x00000000055E0000-0x0000000005B84000-memory.dmp

Filesize
5.6MB

Download