asyncrat | 3d4fae60580e8c72482beea430dea8f3ed64e64bce3abe15150a26de0fffa7fe

Reason

Machine shutdown

General

Target

Client.exe
Size

98KB
MD5

32ea99984c4ac087a13d62ee493c0e5b
SHA1

b74425cc3b69bfe2f8b5ac6f5d0e661d8a646f5e
SHA256

3d4fae60580e8c72482beea430dea8f3ed64e64bce3abe15150a26de0fffa7fe
SHA512

5064c78c2b8e145105eac87c154a13eb939f8dd4eac59a09c48fd8703195cbc8ed979302b1b6bc5d5b552dc4baf6584175c986d1e721c6f8d55ecc6ae02f0e2f
SSDEEP

3072:oUvicxK8WmPMV2e9VdQsH1bf7eQhvWc3fBY:ocWmPMV2aesVbqKT3p

Score

10^/10

asyncrat default rat

Malware Config

Extracted

Family

asyncrat

Version

Venom RAT + HVNC + Stealer + Grabber v6.0.3

Botnet

Default

C2

147.185.221.21:4449

147.185.221.21:6703

147.185.221.21:5552

Mutex

iyxtncnzhjunacoyx

Attributes

delay
1
install
true
install_file
EaxSet.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
behavioral1/files/0x0009000000016fb3-16.dat	family_asyncrat

Executes dropped EXE 1 IoCs

pid	Process
2896	EaxSet.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
2716	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
2728	schtasks.exe

Suspicious behavior: EnumeratesProcesses 16 IoCs

pid	Process
2004	Client.exe
2004	Client.exe
2004	Client.exe
2896	EaxSet.exe
2896	EaxSet.exe
2896	EaxSet.exe
2896	EaxSet.exe
2896	EaxSet.exe
2896	EaxSet.exe
2896	EaxSet.exe
2896	EaxSet.exe
2896	EaxSet.exe
2896	EaxSet.exe
2896	EaxSet.exe
2896	EaxSet.exe
2896	EaxSet.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	2004	Client.exe
Token: SeDebugPrivilege	2896	EaxSet.exe
Token: 33	2100	AUDIODG.EXE
Token: SeIncBasePriorityPrivilege	2100	AUDIODG.EXE
Token: 33	2100	AUDIODG.EXE
Token: SeIncBasePriorityPrivilege	2100	AUDIODG.EXE

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2896	EaxSet.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2004 wrote to memory of 2304	2004	Client.exe	31
PID 2004 wrote to memory of 2304	2004	Client.exe	31
PID 2004 wrote to memory of 2304	2004	Client.exe	31
PID 2004 wrote to memory of 2988	2004	Client.exe	33
PID 2004 wrote to memory of 2988	2004	Client.exe	33
PID 2004 wrote to memory of 2988	2004	Client.exe	33
PID 2988 wrote to memory of 2716	2988	cmd.exe	35
PID 2988 wrote to memory of 2716	2988	cmd.exe	35
PID 2988 wrote to memory of 2716	2988	cmd.exe	35
PID 2304 wrote to memory of 2728	2304	cmd.exe	36
PID 2304 wrote to memory of 2728	2304	cmd.exe	36
PID 2304 wrote to memory of 2728	2304	cmd.exe	36
PID 2988 wrote to memory of 2896	2988	cmd.exe	37
PID 2988 wrote to memory of 2896	2988	cmd.exe	37
PID 2988 wrote to memory of 2896	2988	cmd.exe	37

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\Client.exe
"C:\Users\Admin\AppData\Local\Temp\Client.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2004
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "EaxSet" /tr '"C:\Users\Admin\AppData\Roaming\EaxSet.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2304
- - C:\Windows\system32\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "EaxSet" /tr '"C:\Users\Admin\AppData\Roaming\EaxSet.exe"'
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2728
- C:\Windows\system32\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmpDC1C.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2988
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:2716
- - C:\Users\Admin\AppData\Roaming\EaxSet.exe
    "C:\Users\Admin\AppData\Roaming\EaxSet.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:2896

C:\Windows\system32\calc.exe
"C:\Windows\system32\calc.exe"
1⤵
PID:2596

C:\Windows\system32\LogonUI.exe
"LogonUI.exe" /flags:0x0
1⤵
PID:2588

C:\Windows\system32\AUDIODG.EXE
C:\Windows\system32\AUDIODG.EXE 0x550
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2100

C:\Windows\system32\LogonUI.exe
"LogonUI.exe" /flags:0x1
1⤵
PID:2300

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

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpDC1C.tmp.bat

Filesize
150B

MD5
42652c7ff8edb7b48366c482975a8662

SHA1
aa60f613ba8a6f9c10970c0bcfe2dd4222315df8

SHA256
fd68da31a595fde445b73937f99a8d3ba3ff7931a19f5327fa255b9606d35b2f

SHA512
5b10405d8920d3b83b20e8ebb850497047686e13dc85d0d2d8be0c335c35663c4f7ca776694c5c145e60604606275f597be94cf85a4e203c27a22bd57d4739aa

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

Filesize
98KB

MD5
32ea99984c4ac087a13d62ee493c0e5b

SHA1
b74425cc3b69bfe2f8b5ac6f5d0e661d8a646f5e

SHA256
3d4fae60580e8c72482beea430dea8f3ed64e64bce3abe15150a26de0fffa7fe

SHA512
5064c78c2b8e145105eac87c154a13eb939f8dd4eac59a09c48fd8703195cbc8ed979302b1b6bc5d5b552dc4baf6584175c986d1e721c6f8d55ecc6ae02f0e2f

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

Filesize
8B

MD5
cf759e4c5f14fe3eec41b87ed756cea8

SHA1
c27c796bb3c2fac929359563676f4ba1ffada1f5

SHA256
c9f9f193409217f73cc976ad078c6f8bf65d3aabcf5fad3e5a47536d47aa6761

SHA512
c7f832aee13a5eb36d145f35d4464374a9e12fa2017f3c2257442d67483b35a55eccae7f7729243350125b37033e075efbc2303839fd86b81b9b4dca3626953b

Download Submit
memory/2004-0-0x000007FEF5273000-0x000007FEF5274000-memory.dmp

Filesize
4KB

Download
memory/2004-1-0x00000000001C0000-0x00000000001DE000-memory.dmp

Filesize
120KB

Download
memory/2004-3-0x000007FEF5270000-0x000007FEF5C5C000-memory.dmp

Filesize
9.9MB

Download
memory/2004-12-0x000007FEF5270000-0x000007FEF5C5C000-memory.dmp

Filesize
9.9MB

Download
memory/2004-14-0x000007FEF5270000-0x000007FEF5C5C000-memory.dmp

Filesize
9.9MB

Download
memory/2896-18-0x0000000000930000-0x000000000094E000-memory.dmp

Filesize
120KB

Download

Analysis

Sharing

Errors

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads