asyncrat | 729d6539f4eae0ad9178d7a60b3d478780d8b68bde520d59311e87a4c5f7dc30

Analysis

max time kernel
150s
max time network
148s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
28-07-2024 23:52

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General

Target

729d6539f4eae0ad9178d7a60b3d478780d8b68bde520d59311e87a4c5f7dc30.exe
Size

63KB
MD5

0ac4039b1060355d3408ad727a6127be
SHA1

a2cad20ee53c6fb731b9052bc7a9d1745f0ee1a8
SHA256

729d6539f4eae0ad9178d7a60b3d478780d8b68bde520d59311e87a4c5f7dc30
SHA512

cf9ce5f07d862438d11ed6a13730be7a90dd525fc0331b3532f3a757801ecbc5adb020f9882108e8f80c2ae0c087cd52d8aaff19114e133c5c6919b67358da54
SSDEEP

768:muY6LVcsTPq781wC8A+Xju8Z4gdKmDrRHsL1+T4tSNGHmDbDdph0oXGkLnTSuIdP:HeQPc/ymDrRH8iUUbXh9/2uIdpqKmY7

Score

10^/10

asyncrat default rat

Malware Config

Extracted

Family

asyncrat

Botnet

Default

192.168.1.108:2024

Attributes

delay
1
install
true
install_file
OperaGx.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/0x00080000000120fc-16.dat	family_asyncrat

Executes dropped EXE 1 IoCs

pid	Process
2548	OperaGx.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
2692	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
2968	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
3000	729d6539f4eae0ad9178d7a60b3d478780d8b68bde520d59311e87a4c5f7dc30.exe
3000	729d6539f4eae0ad9178d7a60b3d478780d8b68bde520d59311e87a4c5f7dc30.exe
3000	729d6539f4eae0ad9178d7a60b3d478780d8b68bde520d59311e87a4c5f7dc30.exe
3000	729d6539f4eae0ad9178d7a60b3d478780d8b68bde520d59311e87a4c5f7dc30.exe
3000	729d6539f4eae0ad9178d7a60b3d478780d8b68bde520d59311e87a4c5f7dc30.exe
2548	OperaGx.exe
2548	OperaGx.exe
2548	OperaGx.exe
2548	OperaGx.exe
2548	OperaGx.exe
2548	OperaGx.exe
2548	OperaGx.exe
2548	OperaGx.exe
2548	OperaGx.exe
2548	OperaGx.exe
2548	OperaGx.exe
2548	OperaGx.exe
2548	OperaGx.exe
2548	OperaGx.exe
2548	OperaGx.exe
2548	OperaGx.exe
2548	OperaGx.exe
2548	OperaGx.exe
2548	OperaGx.exe
2548	OperaGx.exe
2548	OperaGx.exe
2548	OperaGx.exe
2548	OperaGx.exe
2548	OperaGx.exe
2548	OperaGx.exe
2548	OperaGx.exe
2548	OperaGx.exe
2548	OperaGx.exe
2548	OperaGx.exe
2548	OperaGx.exe
2548	OperaGx.exe
2548	OperaGx.exe
2548	OperaGx.exe
2548	OperaGx.exe
2548	OperaGx.exe
2548	OperaGx.exe
2548	OperaGx.exe
2548	OperaGx.exe
2548	OperaGx.exe
2548	OperaGx.exe
2548	OperaGx.exe
2548	OperaGx.exe
2548	OperaGx.exe
2548	OperaGx.exe
2548	OperaGx.exe
2548	OperaGx.exe
2548	OperaGx.exe
2548	OperaGx.exe
2548	OperaGx.exe
2548	OperaGx.exe
2548	OperaGx.exe
2548	OperaGx.exe
2548	OperaGx.exe
2548	OperaGx.exe
2548	OperaGx.exe
2548	OperaGx.exe
2548	OperaGx.exe
2548	OperaGx.exe
2548	OperaGx.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	3000	729d6539f4eae0ad9178d7a60b3d478780d8b68bde520d59311e87a4c5f7dc30.exe
Token: SeDebugPrivilege	3000	729d6539f4eae0ad9178d7a60b3d478780d8b68bde520d59311e87a4c5f7dc30.exe
Token: SeDebugPrivilege	2548	OperaGx.exe
Token: SeDebugPrivilege	2548	OperaGx.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 3000 wrote to memory of 2796	3000	729d6539f4eae0ad9178d7a60b3d478780d8b68bde520d59311e87a4c5f7dc30.exe	31
PID 3000 wrote to memory of 2796	3000	729d6539f4eae0ad9178d7a60b3d478780d8b68bde520d59311e87a4c5f7dc30.exe	31
PID 3000 wrote to memory of 2796	3000	729d6539f4eae0ad9178d7a60b3d478780d8b68bde520d59311e87a4c5f7dc30.exe	31
PID 3000 wrote to memory of 2732	3000	729d6539f4eae0ad9178d7a60b3d478780d8b68bde520d59311e87a4c5f7dc30.exe	33
PID 3000 wrote to memory of 2732	3000	729d6539f4eae0ad9178d7a60b3d478780d8b68bde520d59311e87a4c5f7dc30.exe	33
PID 3000 wrote to memory of 2732	3000	729d6539f4eae0ad9178d7a60b3d478780d8b68bde520d59311e87a4c5f7dc30.exe	33
PID 2796 wrote to memory of 2968	2796	cmd.exe	35
PID 2796 wrote to memory of 2968	2796	cmd.exe	35
PID 2796 wrote to memory of 2968	2796	cmd.exe	35
PID 2732 wrote to memory of 2692	2732	cmd.exe	36
PID 2732 wrote to memory of 2692	2732	cmd.exe	36
PID 2732 wrote to memory of 2692	2732	cmd.exe	36
PID 2732 wrote to memory of 2548	2732	cmd.exe	37
PID 2732 wrote to memory of 2548	2732	cmd.exe	37
PID 2732 wrote to memory of 2548	2732	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\729d6539f4eae0ad9178d7a60b3d478780d8b68bde520d59311e87a4c5f7dc30.exe
"C:\Users\Admin\AppData\Local\Temp\729d6539f4eae0ad9178d7a60b3d478780d8b68bde520d59311e87a4c5f7dc30.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3000
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "OperaGx" /tr '"C:\Users\Admin\AppData\Roaming\OperaGx.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2796
- - C:\Windows\system32\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "OperaGx" /tr '"C:\Users\Admin\AppData\Roaming\OperaGx.exe"'
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2968
- C:\Windows\system32\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp5E46.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2732
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:2692
- - C:\Users\Admin\AppData\Roaming\OperaGx.exe
    "C:\Users\Admin\AppData\Roaming\OperaGx.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2548

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp5E46.tmp.bat

Filesize
151B

MD5
ca56f5654c21526346b36984e75d4d03

SHA1
1c180ce4c02283ae6e0e4ba847f75bd54b49401d

SHA256
4a1f97865d9864a524a892963cdcd4198b6888f7025ae167a1a86f5b9a874657

SHA512
d63d13455ccc08b313325c43943899bc2ad3d173f2536b9300e1cf7765df74eff81e1ddbaed8b85280dccdded7ce97855bc83a1cdcf972ef698b3e98e9b03598

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

Filesize
63KB

MD5
0ac4039b1060355d3408ad727a6127be

SHA1
a2cad20ee53c6fb731b9052bc7a9d1745f0ee1a8

SHA256
729d6539f4eae0ad9178d7a60b3d478780d8b68bde520d59311e87a4c5f7dc30

SHA512
cf9ce5f07d862438d11ed6a13730be7a90dd525fc0331b3532f3a757801ecbc5adb020f9882108e8f80c2ae0c087cd52d8aaff19114e133c5c6919b67358da54

Download Submit
memory/2548-17-0x0000000000AF0000-0x0000000000B06000-memory.dmp

Filesize
88KB

Download
memory/3000-0-0x000007FEF5AB3000-0x000007FEF5AB4000-memory.dmp

Filesize
4KB

Download
memory/3000-1-0x0000000000130000-0x0000000000146000-memory.dmp

Filesize
88KB

Download
memory/3000-2-0x000007FEF5AB0000-0x000007FEF649C000-memory.dmp

Filesize
9.9MB

Download
memory/3000-3-0x000007FEF5AB0000-0x000007FEF649C000-memory.dmp

Filesize
9.9MB

Download
memory/3000-12-0x000007FEF5AB0000-0x000007FEF649C000-memory.dmp

Filesize
9.9MB

Download