asyncrat | 70c86f345adf4e43d56bfeb5eec348475722803a6aa65ceac1a6a0aab4904539

Analysis

max time kernel
66s
max time network
144s
platform
windows10_x64
resource
win10v20210410
submitted
31/08/2021, 17:10

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General

Target
e96e34b282bc69781186afab0f60e5b8.exe
Size 563KB
Sample210831-azsxngrmya
SHA256 70c86f345adf4e43d56bfeb5eec348475722803a6aa65ceac1a6a0aab4904539
MD5 e96e34b282bc69781186afab0f60e5b8
SHA1 f52a87784fe7d6dd5fe77c7a54c0eed1887caeb1
SHA512 752a22c7b9f32edd76698486aeb6d72dd5448dfb0a44d9294389fb67f76b67c863133c61d628d9164179f0b480337ed296c92ad399ad13b68ba0c57bb4150d91
MD5 SHA1 SHA512

Score

10^/10

asyncrat persistence rat

Malware Config

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers.
rat asyncrat

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral2/memory/1608-138-0x0000000007110000-0x000000000712B000-memory.dmp	asyncrat

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3686645723-710336880-414668232-1000\Software\Microsoft\Windows\CurrentVersion\Run\nvsphelper1 = "\"C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Start Menu\\Programs\\nvsphelper1.exe\""	e96e34b282bc69781186afab0f60e5b8.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3400 set thread context of 1608	3400	e96e34b282bc69781186afab0f60e5b8.exe	81

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
3400	e96e34b282bc69781186afab0f60e5b8.exe
3400	e96e34b282bc69781186afab0f60e5b8.exe
3400	e96e34b282bc69781186afab0f60e5b8.exe
3400	e96e34b282bc69781186afab0f60e5b8.exe
3400	e96e34b282bc69781186afab0f60e5b8.exe
3400	e96e34b282bc69781186afab0f60e5b8.exe
3400	e96e34b282bc69781186afab0f60e5b8.exe
3400	e96e34b282bc69781186afab0f60e5b8.exe
3400	e96e34b282bc69781186afab0f60e5b8.exe
3400	e96e34b282bc69781186afab0f60e5b8.exe
1608	e96e34b282bc69781186afab0f60e5b8.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3400	e96e34b282bc69781186afab0f60e5b8.exe
Token: SeDebugPrivilege	1608	e96e34b282bc69781186afab0f60e5b8.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 3400 wrote to memory of 1292	3400	e96e34b282bc69781186afab0f60e5b8.exe	79
PID 3400 wrote to memory of 1292	3400	e96e34b282bc69781186afab0f60e5b8.exe	79
PID 3400 wrote to memory of 1292	3400	e96e34b282bc69781186afab0f60e5b8.exe	79
PID 3400 wrote to memory of 1588	3400	e96e34b282bc69781186afab0f60e5b8.exe	80
PID 3400 wrote to memory of 1588	3400	e96e34b282bc69781186afab0f60e5b8.exe	80
PID 3400 wrote to memory of 1588	3400	e96e34b282bc69781186afab0f60e5b8.exe	80
PID 3400 wrote to memory of 1608	3400	e96e34b282bc69781186afab0f60e5b8.exe	81
PID 3400 wrote to memory of 1608	3400	e96e34b282bc69781186afab0f60e5b8.exe	81
PID 3400 wrote to memory of 1608	3400	e96e34b282bc69781186afab0f60e5b8.exe	81
PID 3400 wrote to memory of 1608	3400	e96e34b282bc69781186afab0f60e5b8.exe	81
PID 3400 wrote to memory of 1608	3400	e96e34b282bc69781186afab0f60e5b8.exe	81
PID 3400 wrote to memory of 1608	3400	e96e34b282bc69781186afab0f60e5b8.exe	81
PID 3400 wrote to memory of 1608	3400	e96e34b282bc69781186afab0f60e5b8.exe	81
PID 3400 wrote to memory of 1608	3400	e96e34b282bc69781186afab0f60e5b8.exe	81
PID 1608 wrote to memory of 3700	1608	e96e34b282bc69781186afab0f60e5b8.exe	84
PID 1608 wrote to memory of 3700	1608	e96e34b282bc69781186afab0f60e5b8.exe	84
PID 1608 wrote to memory of 3700	1608	e96e34b282bc69781186afab0f60e5b8.exe	84
PID 3700 wrote to memory of 3124	3700	cmd.exe	86
PID 3700 wrote to memory of 3124	3700	cmd.exe	86
PID 3700 wrote to memory of 3124	3700	cmd.exe	86

C:\Users\Admin\AppData\Local\Temp\e96e34b282bc69781186afab0f60e5b8.exe
"C:\Users\Admin\AppData\Local\Temp\e96e34b282bc69781186afab0f60e5b8.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3400
- C:\Users\Admin\AppData\Local\Temp\e96e34b282bc69781186afab0f60e5b8.exe
  C:\Users\Admin\AppData\Local\Temp\e96e34b282bc69781186afab0f60e5b8.exe
  2⤵
  PID:1292
- C:\Users\Admin\AppData\Local\Temp\e96e34b282bc69781186afab0f60e5b8.exe
  C:\Users\Admin\AppData\Local\Temp\e96e34b282bc69781186afab0f60e5b8.exe
  2⤵
  PID:1588
- C:\Users\Admin\AppData\Local\Temp\e96e34b282bc69781186afab0f60e5b8.exe
  C:\Users\Admin\AppData\Local\Temp\e96e34b282bc69781186afab0f60e5b8.exe
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1608
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /c start /b powershell –ExecutionPolicy Bypass Start-Process -FilePath '"C:\Users\Admin\AppData\Local\Temp\dvosrz.exe"' & exit
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:3700
  - - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      powershell –ExecutionPolicy Bypass Start-Process -FilePath '"C:\Users\Admin\AppData\Local\Temp\dvosrz.exe"'
      4⤵
      PID:3124

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1608-128-0x0000000000400000-0x000000000042C000-memory.dmp

Download

memory/1608-138-0x0000000007110000-0x000000000712B000-memory.dmp

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memory/1608-136-0x0000000005910000-0x0000000005911000-memory.dmp

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memory/1608-134-0x0000000005800000-0x0000000005801000-memory.dmp

Download

memory/1608-133-0x00000000056B0000-0x00000000056B1000-memory.dmp

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memory/3400-119-0x0000000004E20000-0x000000000531E000-memory.dmp

Download

memory/3400-127-0x0000000007720000-0x0000000007721000-memory.dmp

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memory/3400-126-0x0000000007680000-0x00000000076EB000-memory.dmp

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memory/3400-121-0x0000000007430000-0x0000000007431000-memory.dmp

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memory/3400-120-0x0000000006D20000-0x0000000006D87000-memory.dmp

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memory/3400-114-0x0000000000570000-0x0000000000571000-memory.dmp

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memory/3400-118-0x0000000004E40000-0x0000000004E41000-memory.dmp

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memory/3400-117-0x0000000004EC0000-0x0000000004EC1000-memory.dmp

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memory/3400-116-0x0000000005320000-0x0000000005321000-memory.dmp

Download