asyncrat | 8c54a5688aec016bd13c68a755c96de2029630e41d76bce15421dac86a6c256a

General

Target

Audio.exe
Size

74KB
MD5

c7795a63dfcc82fa556e31ed6867a716
SHA1

2efc2f8651dccbd08540dea01426d2572f4c4420
SHA256

8c54a5688aec016bd13c68a755c96de2029630e41d76bce15421dac86a6c256a
SHA512

14f40813e77225006dd3a97fd8984a47065ec72725fdcab7353c39cf12a06e18432c610c9b00258862b04c7c61ac72de6676caa0fd9fa684b853592285af7622
SSDEEP

1536:aUKkcx9pXCTyPMV2Ydj/yLEgItH1ba/0SLiQzcKLVclN:aUDcx958yPMVN/nTH1basSuQ7BY

Score

10^/10

asyncrat default rat

Malware Config

Extracted

Family

asyncrat

Version

Venom RAT + HVNC + Stealer + Grabber v6.0.3

Botnet

Default

C2

147.185.221.225:54312

Mutex

qgmwiwgcbk

Attributes

delay
1
install
true
install_file
Beaming.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

resource	yara_rule
behavioral2/files/0x0008000000023c80-12.dat	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-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	Audio.exe

Executes dropped EXE 1 IoCs

pid	Process
4796	Beaming.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
2284	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
3216	schtasks.exe

Suspicious behavior: EnumeratesProcesses 30 IoCs

pid	Process
4760	Audio.exe
4760	Audio.exe
4760	Audio.exe
4760	Audio.exe
4760	Audio.exe
4760	Audio.exe
4760	Audio.exe
4760	Audio.exe
4760	Audio.exe
4760	Audio.exe
4760	Audio.exe
4760	Audio.exe
4760	Audio.exe
4760	Audio.exe
4760	Audio.exe
4760	Audio.exe
4760	Audio.exe
4760	Audio.exe
4760	Audio.exe
4760	Audio.exe
4760	Audio.exe
4760	Audio.exe
4760	Audio.exe
4796	Beaming.exe
4796	Beaming.exe
4796	Beaming.exe
4796	Beaming.exe
4796	Beaming.exe
4796	Beaming.exe
4796	Beaming.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4760	Audio.exe
Token: SeDebugPrivilege	4796	Beaming.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4796	Beaming.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 4760 wrote to memory of 312	4760	Audio.exe	83
PID 4760 wrote to memory of 312	4760	Audio.exe	83
PID 4760 wrote to memory of 232	4760	Audio.exe	85
PID 4760 wrote to memory of 232	4760	Audio.exe	85
PID 232 wrote to memory of 2284	232	cmd.exe	88
PID 232 wrote to memory of 2284	232	cmd.exe	88
PID 312 wrote to memory of 3216	312	cmd.exe	87
PID 312 wrote to memory of 3216	312	cmd.exe	87
PID 232 wrote to memory of 4796	232	cmd.exe	89
PID 232 wrote to memory of 4796	232	cmd.exe	89

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\Audio.exe
"C:\Users\Admin\AppData\Local\Temp\Audio.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4760
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "Beaming" /tr '"C:\Users\Admin\AppData\Roaming\Beaming.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:312
- - C:\Windows\system32\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "Beaming" /tr '"C:\Users\Admin\AppData\Roaming\Beaming.exe"'
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:3216
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpB7F6.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:232
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:2284
- - C:\Users\Admin\AppData\Roaming\Beaming.exe
    "C:\Users\Admin\AppData\Roaming\Beaming.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:4796

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\tmpB7F6.tmp.bat

Filesize
151B

MD5
c783ad4d78806169f23a5ae65bb9c000

SHA1
0a34276a7c9572c5f57af3c33b06618565bc7f0e

SHA256
94cbd268e8a4e54eb08e320fc1aec0027db91b235196c6341076a895134ed654

SHA512
f43bf395ebfd8f150cceb7d69c62208dc218d9e0f524e1a3ad018982c3b2a054a8d58f95cacc69af56e844792b2c989de0ce803570687ce69f7565bfa773c2c4

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

Filesize
74KB

MD5
c7795a63dfcc82fa556e31ed6867a716

SHA1
2efc2f8651dccbd08540dea01426d2572f4c4420

SHA256
8c54a5688aec016bd13c68a755c96de2029630e41d76bce15421dac86a6c256a

SHA512
14f40813e77225006dd3a97fd8984a47065ec72725fdcab7353c39cf12a06e18432c610c9b00258862b04c7c61ac72de6676caa0fd9fa684b853592285af7622

Download Submit
C:\Users\Admin\AppData\Roaming\MyData\DataLogs.conf

Filesize
8B

MD5
cf759e4c5f14fe3eec41b87ed756cea8

SHA1
c27c796bb3c2fac929359563676f4ba1ffada1f5

SHA256
c9f9f193409217f73cc976ad078c6f8bf65d3aabcf5fad3e5a47536d47aa6761

SHA512
c7f832aee13a5eb36d145f35d4464374a9e12fa2017f3c2257442d67483b35a55eccae7f7729243350125b37033e075efbc2303839fd86b81b9b4dca3626953b

Download Submit
memory/4760-0-0x00007FFEF9FB3000-0x00007FFEF9FB5000-memory.dmp

Filesize
8KB

Download
memory/4760-1-0x0000000000B70000-0x0000000000B88000-memory.dmp

Filesize
96KB

Download
memory/4760-3-0x00007FFEF9FB0000-0x00007FFEFAA71000-memory.dmp

Filesize
10.8MB

Download
memory/4760-8-0x00007FFEF9FB0000-0x00007FFEFAA71000-memory.dmp

Filesize
10.8MB

Download
memory/4760-9-0x00007FFEF9FB0000-0x00007FFEFAA71000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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