asyncrat | 7c8a5e6cf4e451d61157e113f431a1f3e606fba0e7147ffa9a8f429cb60e47d6

General

Target

Infected.exe
Size

63KB
MD5

9efaf6b98fdde9df4532d1236b60619f
SHA1

5d1414d09d54de16b04cd0cd05ccfc0692588fd1
SHA256

7c8a5e6cf4e451d61157e113f431a1f3e606fba0e7147ffa9a8f429cb60e47d6
SHA512

eabc2c58a7b2d636f13b149199f2dc943c4af3296c5a4605b72293294a449a2ea8da432238748ca2fb69fb944a31ac6fae7e5310cdc57609e5955f62b71e812d
SSDEEP

768:PHMvlKazXYN78NwC8A+XuqazcBRL5JTk1+T4KSBGHmDbD/ph0oXtKnk+SusdpqKX:EtTXA9dSJYUbdh9dJusdpqKmY7

Score

10^/10

asyncrat default rat

Malware Config

Extracted

Family

asyncrat

Botnet

Default

C2

forums-appliances.gl.at.ply.gg:1962

Attributes

delay
1
install
true
install_file
windows.exe
install_folder
%AppData%

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

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Roaming\windows.exe	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

Processes:

Infected.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	Infected.exe

Executes dropped EXE 1 IoCs

Processes:

windows.exe

pid process

4064 windows.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

Processes:

timeout.exe

pid process

3516 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

Processes:

schtasks.exe

pid process

816 schtasks.exe

pid	process
4064	windows.exe

pid	process
3516	timeout.exe

pid	process
816	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

Infected.exewindows.exe

pid	process
3044	Infected.exe
3044	Infected.exe
3044	Infected.exe
3044	Infected.exe
3044	Infected.exe
3044	Infected.exe
3044	Infected.exe
3044	Infected.exe
3044	Infected.exe
3044	Infected.exe
3044	Infected.exe
3044	Infected.exe
3044	Infected.exe
3044	Infected.exe
3044	Infected.exe
3044	Infected.exe
3044	Infected.exe
3044	Infected.exe
3044	Infected.exe
3044	Infected.exe
3044	Infected.exe
3044	Infected.exe
3044	Infected.exe
3044	Infected.exe
3044	Infected.exe
3044	Infected.exe
3044	Infected.exe
3044	Infected.exe
3044	Infected.exe
3044	Infected.exe
3044	Infected.exe
3044	Infected.exe
3044	Infected.exe
4064	windows.exe
4064	windows.exe
4064	windows.exe
4064	windows.exe
4064	windows.exe
4064	windows.exe
4064	windows.exe
4064	windows.exe
4064	windows.exe
4064	windows.exe
4064	windows.exe
4064	windows.exe
4064	windows.exe
4064	windows.exe
4064	windows.exe
4064	windows.exe
4064	windows.exe
4064	windows.exe
4064	windows.exe
4064	windows.exe
4064	windows.exe
4064	windows.exe
4064	windows.exe
4064	windows.exe
4064	windows.exe
4064	windows.exe
4064	windows.exe
4064	windows.exe
4064	windows.exe
4064	windows.exe
4064	windows.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

Infected.exewindows.exe

description	pid	process
Token: SeDebugPrivilege	3044	Infected.exe
Token: SeDebugPrivilege	3044	Infected.exe
Token: SeDebugPrivilege	4064	windows.exe
Token: SeDebugPrivilege	4064	windows.exe

Suspicious use of WriteProcessMemory 10 IoCs

Processes:

Infected.execmd.execmd.exe

description	pid	process	target process
PID 3044 wrote to memory of 3460	3044	Infected.exe	cmd.exe
PID 3044 wrote to memory of 3460	3044	Infected.exe	cmd.exe
PID 3044 wrote to memory of 2932	3044	Infected.exe	cmd.exe
PID 3044 wrote to memory of 2932	3044	Infected.exe	cmd.exe
PID 2932 wrote to memory of 3516	2932	cmd.exe	timeout.exe
PID 2932 wrote to memory of 3516	2932	cmd.exe	timeout.exe
PID 3460 wrote to memory of 816	3460	cmd.exe	schtasks.exe
PID 3460 wrote to memory of 816	3460	cmd.exe	schtasks.exe
PID 2932 wrote to memory of 4064	2932	cmd.exe	windows.exe
PID 2932 wrote to memory of 4064	2932	cmd.exe	windows.exe

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\Infected.exe
"C:\Users\Admin\AppData\Local\Temp\Infected.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3044
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "windows" /tr '"C:\Users\Admin\AppData\Roaming\windows.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3460
- - C:\Windows\system32\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "windows" /tr '"C:\Users\Admin\AppData\Roaming\windows.exe"'
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:816
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp7F03.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2932
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:3516
- - C:\Users\Admin\AppData\Roaming\windows.exe
    "C:\Users\Admin\AppData\Roaming\windows.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4064

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

2

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\tmp7F03.tmp.bat

Filesize
151B

MD5
da7c68c5ee583195595cf6ab8b1f3dba

SHA1
72f6b74599f3e0e12a623958fde7a0a01721f524

SHA256
3540e9c6aa5c1d578ca34aae3a9ed993e648d90900ff0c7ac9362a2732068b86

SHA512
62c64b428fffb76e35bfa54246fa097b42286508313bfe6d09dce5e1190f4f5ba85cb67f8f393e82ed0c95c737ace43012d726d19e3059be4c32919c5539cad5

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

Filesize
63KB

MD5
9efaf6b98fdde9df4532d1236b60619f

SHA1
5d1414d09d54de16b04cd0cd05ccfc0692588fd1

SHA256
7c8a5e6cf4e451d61157e113f431a1f3e606fba0e7147ffa9a8f429cb60e47d6

SHA512
eabc2c58a7b2d636f13b149199f2dc943c4af3296c5a4605b72293294a449a2ea8da432238748ca2fb69fb944a31ac6fae7e5310cdc57609e5955f62b71e812d

Download Submit
memory/3044-0-0x00007FFF703D3000-0x00007FFF703D5000-memory.dmp

Filesize
8KB

Download
memory/3044-1-0x00000000004D0000-0x00000000004E6000-memory.dmp

Filesize
88KB

Download
memory/3044-2-0x00007FFF703D0000-0x00007FFF70E91000-memory.dmp

Filesize
10.8MB

Download
memory/3044-5-0x00007FFF703D0000-0x00007FFF70E91000-memory.dmp

Filesize
10.8MB

Download
memory/3044-8-0x00007FFF703D0000-0x00007FFF70E91000-memory.dmp

Filesize
10.8MB

Download
memory/4064-15-0x000000001D3B0000-0x000000001D426000-memory.dmp

Filesize
472KB

Download
memory/4064-16-0x0000000002690000-0x00000000026C4000-memory.dmp

Filesize
208KB

Download
memory/4064-17-0x00000000026C0000-0x00000000026DE000-memory.dmp

Filesize
120KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads