asyncrat | 15c5c9dc7be64d7d32bf2925ce8412b3f2f212ba7c25af969d9a8ece2086a5ca

General

Target

15c5c9dc7be64d7d32bf2925ce8412b3f2f212ba7c25af969d9a8ece2086a5ca.exe
Size

453KB
MD5

2bb4a448b0132c70a9f3c03db54a52f3
SHA1

2338d8ae200271ccfcf5bb8d97c8c98c52deb43c
SHA256

15c5c9dc7be64d7d32bf2925ce8412b3f2f212ba7c25af969d9a8ece2086a5ca
SHA512

5352592d1dfb6771db491a18dda53c481aee0a072d2c511959f3e2cf9532ac176a6a2f9520b22a4d4675098e089a819f1b4da89d0ec615c9458bcff1ea4cbe29
SSDEEP

12288:3GHr/rHAbXqXVpJqrNix6LDQfLlzH1yv5p:3GHrMXqXwAx0QjO

Score

10^/10

asyncrat default rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.6D

Botnet

Default

C2

seznam.zapto.org:6606

seznam.zapto.org:7707

seznam.zapto.org:8808

Mutex

spqniepxaluvdm

Attributes

delay
5
install
true
install_file
microssofte.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 1 IoCs

rat

resource	yara_rule
behavioral2/memory/1168-4-0x0000000005560000-0x0000000005572000-memory.dmp	family_asyncrat

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-701583114-2636601053-947405450-1000\Control Panel\International\Geo\Nation	15c5c9dc7be64d7d32bf2925ce8412b3f2f212ba7c25af969d9a8ece2086a5ca.exe

Executes dropped EXE 1 IoCs

pid	Process
3272	microssofte.exe

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

System Information Discovery
T1082

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
3556	timeout.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
3452	schtasks.exe

Suspicious behavior: EnumeratesProcesses 21 IoCs

pid	Process
1168	15c5c9dc7be64d7d32bf2925ce8412b3f2f212ba7c25af969d9a8ece2086a5ca.exe
1168	15c5c9dc7be64d7d32bf2925ce8412b3f2f212ba7c25af969d9a8ece2086a5ca.exe
1168	15c5c9dc7be64d7d32bf2925ce8412b3f2f212ba7c25af969d9a8ece2086a5ca.exe
1168	15c5c9dc7be64d7d32bf2925ce8412b3f2f212ba7c25af969d9a8ece2086a5ca.exe
1168	15c5c9dc7be64d7d32bf2925ce8412b3f2f212ba7c25af969d9a8ece2086a5ca.exe
1168	15c5c9dc7be64d7d32bf2925ce8412b3f2f212ba7c25af969d9a8ece2086a5ca.exe
1168	15c5c9dc7be64d7d32bf2925ce8412b3f2f212ba7c25af969d9a8ece2086a5ca.exe
1168	15c5c9dc7be64d7d32bf2925ce8412b3f2f212ba7c25af969d9a8ece2086a5ca.exe
1168	15c5c9dc7be64d7d32bf2925ce8412b3f2f212ba7c25af969d9a8ece2086a5ca.exe
1168	15c5c9dc7be64d7d32bf2925ce8412b3f2f212ba7c25af969d9a8ece2086a5ca.exe
1168	15c5c9dc7be64d7d32bf2925ce8412b3f2f212ba7c25af969d9a8ece2086a5ca.exe
1168	15c5c9dc7be64d7d32bf2925ce8412b3f2f212ba7c25af969d9a8ece2086a5ca.exe
1168	15c5c9dc7be64d7d32bf2925ce8412b3f2f212ba7c25af969d9a8ece2086a5ca.exe
1168	15c5c9dc7be64d7d32bf2925ce8412b3f2f212ba7c25af969d9a8ece2086a5ca.exe
1168	15c5c9dc7be64d7d32bf2925ce8412b3f2f212ba7c25af969d9a8ece2086a5ca.exe
1168	15c5c9dc7be64d7d32bf2925ce8412b3f2f212ba7c25af969d9a8ece2086a5ca.exe
1168	15c5c9dc7be64d7d32bf2925ce8412b3f2f212ba7c25af969d9a8ece2086a5ca.exe
1168	15c5c9dc7be64d7d32bf2925ce8412b3f2f212ba7c25af969d9a8ece2086a5ca.exe
1168	15c5c9dc7be64d7d32bf2925ce8412b3f2f212ba7c25af969d9a8ece2086a5ca.exe
1168	15c5c9dc7be64d7d32bf2925ce8412b3f2f212ba7c25af969d9a8ece2086a5ca.exe
1168	15c5c9dc7be64d7d32bf2925ce8412b3f2f212ba7c25af969d9a8ece2086a5ca.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1168	15c5c9dc7be64d7d32bf2925ce8412b3f2f212ba7c25af969d9a8ece2086a5ca.exe
Token: SeDebugPrivilege	3272	microssofte.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 1168 wrote to memory of 3920	1168	15c5c9dc7be64d7d32bf2925ce8412b3f2f212ba7c25af969d9a8ece2086a5ca.exe	86
PID 1168 wrote to memory of 3920	1168	15c5c9dc7be64d7d32bf2925ce8412b3f2f212ba7c25af969d9a8ece2086a5ca.exe	86
PID 1168 wrote to memory of 3920	1168	15c5c9dc7be64d7d32bf2925ce8412b3f2f212ba7c25af969d9a8ece2086a5ca.exe	86
PID 1168 wrote to memory of 756	1168	15c5c9dc7be64d7d32bf2925ce8412b3f2f212ba7c25af969d9a8ece2086a5ca.exe	88
PID 1168 wrote to memory of 756	1168	15c5c9dc7be64d7d32bf2925ce8412b3f2f212ba7c25af969d9a8ece2086a5ca.exe	88
PID 1168 wrote to memory of 756	1168	15c5c9dc7be64d7d32bf2925ce8412b3f2f212ba7c25af969d9a8ece2086a5ca.exe	88
PID 3920 wrote to memory of 3452	3920	cmd.exe	90
PID 3920 wrote to memory of 3452	3920	cmd.exe	90
PID 3920 wrote to memory of 3452	3920	cmd.exe	90
PID 756 wrote to memory of 3556	756	cmd.exe	91
PID 756 wrote to memory of 3556	756	cmd.exe	91
PID 756 wrote to memory of 3556	756	cmd.exe	91
PID 756 wrote to memory of 3272	756	cmd.exe	92
PID 756 wrote to memory of 3272	756	cmd.exe	92
PID 756 wrote to memory of 3272	756	cmd.exe	92

C:\Users\Admin\AppData\Local\Temp\15c5c9dc7be64d7d32bf2925ce8412b3f2f212ba7c25af969d9a8ece2086a5ca.exe
"C:\Users\Admin\AppData\Local\Temp\15c5c9dc7be64d7d32bf2925ce8412b3f2f212ba7c25af969d9a8ece2086a5ca.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1168
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /ru system /rl highest /tn 15c5c9dc7be64d7d32bf2925ce8412b3f2f212ba7c25af969d9a8ece2086a5ca /tr '"C:\Users\Admin\AppData\Roaming\microssofte.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3920
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /ru system /rl highest /tn 15c5c9dc7be64d7d32bf2925ce8412b3f2f212ba7c25af969d9a8ece2086a5ca /tr '"C:\Users\Admin\AppData\Roaming\microssofte.exe"'
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:3452
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp9E43.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:756
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:3556
- - C:\Users\Admin\AppData\Roaming\microssofte.exe
    "C:\Users\Admin\AppData\Roaming\microssofte.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:3272

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp9E43.tmp.bat

Filesize
155B

MD5
9c9b8831d21fb1a5f26afcff5f0c1928

SHA1
ee2be71a2fa3c2c839be9fa8943098e6fbabe8e5

SHA256
5fd5c6aed1002dcbea21e4ad03d5d3986c87bbbc34343704c0d02e8473c52469

SHA512
a75fbd0f0a83e8cfa789ff728000fd209a9fd5cfb39cbb564175b53e3fb55f7ac43b68a8ea2477b56cf715062cef3f651cfd080c596147f61c4eb2a30f083d04

Download Submit
C:\Users\Admin\AppData\Roaming\microssofte.exe

Filesize
453KB

MD5
2bb4a448b0132c70a9f3c03db54a52f3

SHA1
2338d8ae200271ccfcf5bb8d97c8c98c52deb43c

SHA256
15c5c9dc7be64d7d32bf2925ce8412b3f2f212ba7c25af969d9a8ece2086a5ca

SHA512
5352592d1dfb6771db491a18dda53c481aee0a072d2c511959f3e2cf9532ac176a6a2f9520b22a4d4675098e089a819f1b4da89d0ec615c9458bcff1ea4cbe29

Download Submit
memory/1168-3-0x00000000055F0000-0x0000000005682000-memory.dmp

Filesize
584KB

Download
memory/1168-0-0x0000000074DFE000-0x0000000074DFF000-memory.dmp

Filesize
4KB

Download
memory/1168-4-0x0000000005560000-0x0000000005572000-memory.dmp

Filesize
72KB

Download
memory/1168-5-0x00000000057B0000-0x000000000584C000-memory.dmp

Filesize
624KB

Download
memory/1168-6-0x0000000074DF0000-0x00000000755A0000-memory.dmp

Filesize
7.7MB

Download
memory/1168-11-0x0000000074DF0000-0x00000000755A0000-memory.dmp

Filesize
7.7MB

Download
memory/1168-2-0x0000000005CC0000-0x0000000006264000-memory.dmp

Filesize
5.6MB

Download
memory/1168-1-0x0000000000B90000-0x0000000000C08000-memory.dmp

Filesize
480KB

Download
memory/3272-16-0x0000000074DE0000-0x0000000075590000-memory.dmp

Filesize
7.7MB

Download
memory/3272-17-0x0000000074DE0000-0x0000000075590000-memory.dmp

Filesize
7.7MB

Download
memory/3272-18-0x0000000006040000-0x00000000060A6000-memory.dmp

Filesize
408KB

Download
memory/3272-19-0x0000000074DE0000-0x0000000075590000-memory.dmp

Filesize
7.7MB

Download
memory/3272-20-0x0000000074DE0000-0x0000000075590000-memory.dmp

Filesize
7.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads