asyncrat | 968a7b0921b85b1b798da57648120b5f9f3e5a4eda06228fe01fb5676ef359fe

General

Target

968a7b0921b85b1b798da57648120b5f9f3e5a4eda06228fe01fb5676ef359fe.exe
Size

47KB
MD5

cc3e568a148a70373ece2c6845e8ad73
SHA1

9759229daee480d6adbda5c6892175174cdf0cf4
SHA256

968a7b0921b85b1b798da57648120b5f9f3e5a4eda06228fe01fb5676ef359fe
SHA512

f20208f3a2229d5a2aac413106ffa0327c0e98f512ab2e0c50646594931e7ff1f253d242cd28fab5f09c841d746da0559d22949cbe99d2e395ef7cfdb073bd6f
SSDEEP

768:EuXI1TAYhAVWU1LGvmo2q4KSETUvgcPI0qfiFps0bX/GVOl6krLKFOycBDZYxq:EuXI1TAuP2q8K0qfAZbX/G8UL6dYxq

Score

10^/10

asyncrat default discovery rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Default

C2

147.185.221.24:40668

resolution-messages.gl.at.ply.gg:40668

Mutex

lzsTzjhhhJXe

Attributes

delay
3
install
true
install_file
Windows Temporary Storage Helper.exe
install_folder
%Temp%

aes.plain

Signatures

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

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral1/files/0x000d000000012261-13.dat	family_asyncrat

Executes dropped EXE 1 IoCs

pid	Process
2540	Windows Temporary Storage Helper.exe

Loads dropped DLL 1 IoCs

pid	Process
2164	cmd.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 6 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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Windows Temporary Storage Helper.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	968a7b0921b85b1b798da57648120b5f9f3e5a4eda06228fe01fb5676ef359fe.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
2816	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
2788	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1768	968a7b0921b85b1b798da57648120b5f9f3e5a4eda06228fe01fb5676ef359fe.exe
1768	968a7b0921b85b1b798da57648120b5f9f3e5a4eda06228fe01fb5676ef359fe.exe
1768	968a7b0921b85b1b798da57648120b5f9f3e5a4eda06228fe01fb5676ef359fe.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1768	968a7b0921b85b1b798da57648120b5f9f3e5a4eda06228fe01fb5676ef359fe.exe
Token: SeDebugPrivilege	2540	Windows Temporary Storage Helper.exe
Token: SeDebugPrivilege	2540	Windows Temporary Storage Helper.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 1768 wrote to memory of 2856	1768	968a7b0921b85b1b798da57648120b5f9f3e5a4eda06228fe01fb5676ef359fe.exe	32
PID 1768 wrote to memory of 2856	1768	968a7b0921b85b1b798da57648120b5f9f3e5a4eda06228fe01fb5676ef359fe.exe	32
PID 1768 wrote to memory of 2856	1768	968a7b0921b85b1b798da57648120b5f9f3e5a4eda06228fe01fb5676ef359fe.exe	32
PID 1768 wrote to memory of 2856	1768	968a7b0921b85b1b798da57648120b5f9f3e5a4eda06228fe01fb5676ef359fe.exe	32
PID 1768 wrote to memory of 2164	1768	968a7b0921b85b1b798da57648120b5f9f3e5a4eda06228fe01fb5676ef359fe.exe	34
PID 1768 wrote to memory of 2164	1768	968a7b0921b85b1b798da57648120b5f9f3e5a4eda06228fe01fb5676ef359fe.exe	34
PID 1768 wrote to memory of 2164	1768	968a7b0921b85b1b798da57648120b5f9f3e5a4eda06228fe01fb5676ef359fe.exe	34
PID 1768 wrote to memory of 2164	1768	968a7b0921b85b1b798da57648120b5f9f3e5a4eda06228fe01fb5676ef359fe.exe	34
PID 2856 wrote to memory of 2788	2856	cmd.exe	36
PID 2856 wrote to memory of 2788	2856	cmd.exe	36
PID 2856 wrote to memory of 2788	2856	cmd.exe	36
PID 2856 wrote to memory of 2788	2856	cmd.exe	36
PID 2164 wrote to memory of 2816	2164	cmd.exe	37
PID 2164 wrote to memory of 2816	2164	cmd.exe	37
PID 2164 wrote to memory of 2816	2164	cmd.exe	37
PID 2164 wrote to memory of 2816	2164	cmd.exe	37
PID 2164 wrote to memory of 2540	2164	cmd.exe	38
PID 2164 wrote to memory of 2540	2164	cmd.exe	38
PID 2164 wrote to memory of 2540	2164	cmd.exe	38
PID 2164 wrote to memory of 2540	2164	cmd.exe	38

C:\Users\Admin\AppData\Local\Temp\968a7b0921b85b1b798da57648120b5f9f3e5a4eda06228fe01fb5676ef359fe.exe
"C:\Users\Admin\AppData\Local\Temp\968a7b0921b85b1b798da57648120b5f9f3e5a4eda06228fe01fb5676ef359fe.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1768
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "Windows Temporary Storage Helper" /tr '"C:\Users\Admin\AppData\Local\Temp\Windows Temporary Storage Helper.exe"' & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2856
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "Windows Temporary Storage Helper" /tr '"C:\Users\Admin\AppData\Local\Temp\Windows Temporary Storage Helper.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2788
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmpEDA9.tmp.bat""
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2164
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:2816
- - C:\Users\Admin\AppData\Local\Temp\Windows Temporary Storage Helper.exe
    "C:\Users\Admin\AppData\Local\Temp\Windows Temporary Storage Helper.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    PID:2540

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

System Information Discovery

1

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\tmpEDA9.tmp.bat

Filesize
179B

MD5
614ea80a79964051e716168cf8555678

SHA1
e1c2041dd7167bfa3671b291017f5f3e7ead39ce

SHA256
60b59c4ae95119a5dfae104a95beeee0bb6f87a2514348e0ca9f47ab564029e6

SHA512
600823b2016ffd514af6ef1eb2551af1c69cbe00c8f6fcf75ea39dbcfaa46b518208b5a49baaa425bcf9b8829ccc6f4a487599d16fc475edd09367a99d5c1918

Download Submit
\Users\Admin\AppData\Local\Temp\Windows Temporary Storage Helper.exe

Filesize
47KB

MD5
cc3e568a148a70373ece2c6845e8ad73

SHA1
9759229daee480d6adbda5c6892175174cdf0cf4

SHA256
968a7b0921b85b1b798da57648120b5f9f3e5a4eda06228fe01fb5676ef359fe

SHA512
f20208f3a2229d5a2aac413106ffa0327c0e98f512ab2e0c50646594931e7ff1f253d242cd28fab5f09c841d746da0559d22949cbe99d2e395ef7cfdb073bd6f

Download Submit
memory/1768-0-0x0000000074C6E000-0x0000000074C6F000-memory.dmp

Filesize
4KB

Download
memory/1768-1-0x0000000001010000-0x0000000001022000-memory.dmp

Filesize
72KB

Download
memory/1768-2-0x0000000074C60000-0x000000007534E000-memory.dmp

Filesize
6.9MB

Download
memory/1768-11-0x0000000074C60000-0x000000007534E000-memory.dmp

Filesize
6.9MB

Download
memory/2540-16-0x0000000000920000-0x0000000000932000-memory.dmp

Filesize
72KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads