asyncrat | bac9ce6cb745e8349ea56db911bcf2fbe8b31ddc46ddc9ba672a1f0abb07349c

General

Target

2cef0359a938c8dfe7bd204027a7a110N.exe
Size

62KB
MD5

2cef0359a938c8dfe7bd204027a7a110
SHA1

971899b5479f4cfdf99cffe34f6ede0a61647d3f
SHA256

bac9ce6cb745e8349ea56db911bcf2fbe8b31ddc46ddc9ba672a1f0abb07349c
SHA512

6d7a37f04fa052426e7dd50572477eaff76cdca0a82a34b1d46c765e24bdbfca9e0369fcbd7515500e83cc9ef622182aa4748e0ae76b7853d71ef75077210195
SSDEEP

1536:GuLt+Twip2+ixbb5dBwbabYsgvDSd07EYwCUWNZ:GuLsTwip2+ixbbbeba0BDSySDWNZ

Score

10^/10

asyncrat default discovery rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Default

C2

127.0.0.1:6606

127.0.0.1:7707

127.0.0.1:8808

127.0.0.1:19942

5.tcp.eu.ngrok.io:6606

5.tcp.eu.ngrok.io:7707

5.tcp.eu.ngrok.io:8808

5.tcp.eu.ngrok.io:19942

Mutex

cbMLkL41f5Ia

Attributes

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

aes.plain

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
rat 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-1-5-21-1194130065-3471212556-1656947724-1000\Control Panel\International\Geo\Nation	2cef0359a938c8dfe7bd204027a7a110N.exe

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 5 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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2cef0359a938c8dfe7bd204027a7a110N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
4056	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
5088	schtasks.exe

Suspicious behavior: EnumeratesProcesses 19 IoCs

pid	Process
3956	2cef0359a938c8dfe7bd204027a7a110N.exe
3956	2cef0359a938c8dfe7bd204027a7a110N.exe
3956	2cef0359a938c8dfe7bd204027a7a110N.exe
3956	2cef0359a938c8dfe7bd204027a7a110N.exe
3956	2cef0359a938c8dfe7bd204027a7a110N.exe
3956	2cef0359a938c8dfe7bd204027a7a110N.exe
3956	2cef0359a938c8dfe7bd204027a7a110N.exe
3956	2cef0359a938c8dfe7bd204027a7a110N.exe
3956	2cef0359a938c8dfe7bd204027a7a110N.exe
3956	2cef0359a938c8dfe7bd204027a7a110N.exe
3956	2cef0359a938c8dfe7bd204027a7a110N.exe
3956	2cef0359a938c8dfe7bd204027a7a110N.exe
3956	2cef0359a938c8dfe7bd204027a7a110N.exe
3956	2cef0359a938c8dfe7bd204027a7a110N.exe
3956	2cef0359a938c8dfe7bd204027a7a110N.exe
3956	2cef0359a938c8dfe7bd204027a7a110N.exe
3956	2cef0359a938c8dfe7bd204027a7a110N.exe
3956	2cef0359a938c8dfe7bd204027a7a110N.exe
3956	2cef0359a938c8dfe7bd204027a7a110N.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3956	2cef0359a938c8dfe7bd204027a7a110N.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 3956 wrote to memory of 728	3956	2cef0359a938c8dfe7bd204027a7a110N.exe	88
PID 3956 wrote to memory of 728	3956	2cef0359a938c8dfe7bd204027a7a110N.exe	88
PID 3956 wrote to memory of 728	3956	2cef0359a938c8dfe7bd204027a7a110N.exe	88
PID 3956 wrote to memory of 4472	3956	2cef0359a938c8dfe7bd204027a7a110N.exe	90
PID 3956 wrote to memory of 4472	3956	2cef0359a938c8dfe7bd204027a7a110N.exe	90
PID 3956 wrote to memory of 4472	3956	2cef0359a938c8dfe7bd204027a7a110N.exe	90
PID 4472 wrote to memory of 4056	4472	cmd.exe	92
PID 4472 wrote to memory of 4056	4472	cmd.exe	92
PID 4472 wrote to memory of 4056	4472	cmd.exe	92
PID 728 wrote to memory of 5088	728	cmd.exe	93
PID 728 wrote to memory of 5088	728	cmd.exe	93
PID 728 wrote to memory of 5088	728	cmd.exe	93

C:\Users\Admin\AppData\Local\Temp\2cef0359a938c8dfe7bd204027a7a110N.exe
"C:\Users\Admin\AppData\Local\Temp\2cef0359a938c8dfe7bd204027a7a110N.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3956
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "sxaslsklcmaös" /tr '"C:\Users\Admin\AppData\Roaming\sxaslsklcmaös.exe"' & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:728
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "sxaslsklcmaös" /tr '"C:\Users\Admin\AppData\Roaming\sxaslsklcmaös.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:5088
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpD3DA.tmp.bat""
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4472
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:4056

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

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpD3DA.tmp.bat

Filesize
158B

MD5
4412a0a102d40c3772dd4b12ba02666d

SHA1
cbdf329c1cc52398ba53a1aa419b8918de0e8ead

SHA256
4a8fe19cc257e280007af679667ce9a6e75cc72b330736fb3dd2989e9f838127

SHA512
8592fab706ca1dcff37e13754149b671fa45e567f9919b1c8e1fbfd460457c1d1e106f890f9820cbfd96728d386da6086e21c37c4612caa92b2540c7eca53b16

Download Submit
memory/3956-0-0x00000000747CE000-0x00000000747CF000-memory.dmp

Filesize
4KB

Download
memory/3956-1-0x0000000000920000-0x0000000000936000-memory.dmp

Filesize
88KB

Download
memory/3956-2-0x00000000747C0000-0x0000000074F70000-memory.dmp

Filesize
7.7MB

Download
memory/3956-3-0x00000000052F0000-0x000000000538C000-memory.dmp

Filesize
624KB

Download
memory/3956-8-0x00000000747C0000-0x0000000074F70000-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