asyncrat | 49a4c489dfa7a53be07d44857f65fd7a398d7a631a51532f1a9f3b5340979fe8

Analysis

max time kernel
150s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20230703-en
resource tags

arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
submitted
03/08/2023, 11:03

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
2.bin.exe
Size 45KB
Sample230803-m5pdxach84
SHA256 49a4c489dfa7a53be07d44857f65fd7a398d7a631a51532f1a9f3b5340979fe8
MD5 dea3149aae31bd4116adba54840af10f
SHA1 71f22e3720be46ea1d89ca7d47be95fc64a1a741
SHA512 a6cdf451453676080f956330e217a4dd64ba0875ab6d951deaa83b9e38dd32fa87fa1e761dafd61cf55c659a5e333ff55f9726d6a5684f8d18c6843d4297a445
SSDEEP 768:PuO01TXQpMlWUlr7e+fmo2qD7R5+oD6/1ZPIUYgzjb2gX3iHrg3UCBDZrx:PuO01TXOw2k1G/1W9g3bpXS6rdrx
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

asyncrat default rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

Default

pruevapoiu-20286.portmap.io:20286

Mutex

AsyncMutex_6SI8OkPnk

Attributes

delay
3
install
true
install_file
2.exe
install_folder
%AppData%

aes.plain

Signatures

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

Async RAT payload 3 IoCs

rat

resource	yara_rule
behavioral2/memory/3768-133-0x0000000000230000-0x0000000000242000-memory.dmp	asyncrat
behavioral2/files/0x0006000000023256-144.dat	asyncrat
behavioral2/files/0x0006000000023256-145.dat	asyncrat

Executes dropped EXE 1 IoCs

pid	Process
4972	2.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

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/Job

T1053

pid	Process
3996	schtasks.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
4056	timeout.exe

Suspicious behavior: EnumeratesProcesses 23 IoCs

pid	Process
3768	2.bin.exe
3768	2.bin.exe
3768	2.bin.exe
3768	2.bin.exe
3768	2.bin.exe
3768	2.bin.exe
3768	2.bin.exe
3768	2.bin.exe
3768	2.bin.exe
3768	2.bin.exe
3768	2.bin.exe
3768	2.bin.exe
3768	2.bin.exe
3768	2.bin.exe
3768	2.bin.exe
3768	2.bin.exe
3768	2.bin.exe
3768	2.bin.exe
3768	2.bin.exe
3768	2.bin.exe
3768	2.bin.exe
3768	2.bin.exe
3768	2.bin.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3768	2.bin.exe
Token: SeDebugPrivilege	4972	2.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 3768 wrote to memory of 1512	3768	2.bin.exe	87
PID 3768 wrote to memory of 1512	3768	2.bin.exe	87
PID 3768 wrote to memory of 1512	3768	2.bin.exe	87
PID 3768 wrote to memory of 2044	3768	2.bin.exe	89
PID 3768 wrote to memory of 2044	3768	2.bin.exe	89
PID 3768 wrote to memory of 2044	3768	2.bin.exe	89
PID 1512 wrote to memory of 3996	1512	cmd.exe	91
PID 1512 wrote to memory of 3996	1512	cmd.exe	91
PID 1512 wrote to memory of 3996	1512	cmd.exe	91
PID 2044 wrote to memory of 4056	2044	cmd.exe	92
PID 2044 wrote to memory of 4056	2044	cmd.exe	92
PID 2044 wrote to memory of 4056	2044	cmd.exe	92
PID 2044 wrote to memory of 4972	2044	cmd.exe	94
PID 2044 wrote to memory of 4972	2044	cmd.exe	94
PID 2044 wrote to memory of 4972	2044	cmd.exe	94

C:\Users\Admin\AppData\Local\Temp\2.bin.exe
"C:\Users\Admin\AppData\Local\Temp\2.bin.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3768
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "2" /tr '"C:\Users\Admin\AppData\Roaming\2.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1512
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "2" /tr '"C:\Users\Admin\AppData\Roaming\2.exe"'
    3⤵
    - Creates scheduled task(s)
    PID:3996
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp9664.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2044
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:4056
- - C:\Users\Admin\AppData\Roaming\2.exe
    "C:\Users\Admin\AppData\Roaming\2.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:4972

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Persistence

Scheduled Task/Job

T1053

Privilege Escalation

Scheduled Task/Job

T1053

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

tmp9664.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmp9664.tmp.bat
Size 145B
SHA256 17cd389aa62b699cd6365cf2c6cf41e25f46a64dc06c3ef65df70cd45ffc351e
MD5 67954c6ef93303843d3f8ac0df709f92
SHA1 31860dc8b3edf131ed760d48534b7130d3784406
SHA512 a2f680829501da3dae69cdd7b1a5d13c2686561bbf74a71e2acfc49a9d5aa4db0d09ce1dde2dc44ccdcaa6875ccfc3c9c3b741f598ae468c89c31b375b98f355
MD5 SHA1 SHA512

Submit Download

2.exe

Path C:\Users\Admin\AppData\Roaming\2.exe
Size 45KB
SHA256 49a4c489dfa7a53be07d44857f65fd7a398d7a631a51532f1a9f3b5340979fe8
MD5 dea3149aae31bd4116adba54840af10f
SHA1 71f22e3720be46ea1d89ca7d47be95fc64a1a741
SHA512 a6cdf451453676080f956330e217a4dd64ba0875ab6d951deaa83b9e38dd32fa87fa1e761dafd61cf55c659a5e333ff55f9726d6a5684f8d18c6843d4297a445
SSDEEP 768:PuO01TXQpMlWUlr7e+fmo2qD7R5+oD6/1ZPIUYgzjb2gX3iHrg3UCBDZrx:PuO01TXOw2k1G/1W9g3bpXS6rdrx
MD5 SHA1 SHA512 SSDEEP

Submit Download

2.exe

Path C:\Users\Admin\AppData\Roaming\2.exe
Size 45KB
SHA256 49a4c489dfa7a53be07d44857f65fd7a398d7a631a51532f1a9f3b5340979fe8
MD5 dea3149aae31bd4116adba54840af10f
SHA1 71f22e3720be46ea1d89ca7d47be95fc64a1a741
SHA512 a6cdf451453676080f956330e217a4dd64ba0875ab6d951deaa83b9e38dd32fa87fa1e761dafd61cf55c659a5e333ff55f9726d6a5684f8d18c6843d4297a445
SSDEEP 768:PuO01TXQpMlWUlr7e+fmo2qD7R5+oD6/1ZPIUYgzjb2gX3iHrg3UCBDZrx:PuO01TXOw2k1G/1W9g3bpXS6rdrx
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/3768-133-0x0000000000230000-0x0000000000242000-memory.dmp

Download

memory/3768-134-0x0000000074A30000-0x00000000751E0000-memory.dmp

Download

memory/3768-135-0x0000000004D20000-0x0000000004D30000-memory.dmp

Download

memory/3768-136-0x0000000004F30000-0x0000000004FCC000-memory.dmp

Download

memory/3768-141-0x0000000074A30000-0x00000000751E0000-memory.dmp

Download

memory/4972-146-0x00000000749A0000-0x0000000075150000-memory.dmp

Download

memory/4972-147-0x0000000005730000-0x0000000005740000-memory.dmp

Download

memory/4972-148-0x00000000749A0000-0x0000000075150000-memory.dmp

Download

memory/4972-149-0x0000000005730000-0x0000000005740000-memory.dmp

Download