asyncrat | 70c86f345adf4e43d56bfeb5eec348475722803a6aa65ceac1a6a0aab4904539

Analysis

max time kernel
147s
max time network
150s
platform
windows7_x64
resource
win7v20210408
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
behavioral1/memory/1764-75-0x0000000004220000-0x000000000423B000-memory.dmp	asyncrat

Executes dropped EXE 2 IoCs

pid	Process
1280	qhlwrm.exe
1996	qhlwrm.exe

Loads dropped DLL 2 IoCs

pid	Process
592	powershell.exe
1280	qhlwrm.exe

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-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Windows\CurrentVersion\Run\nvsphelper1 = "\"C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Start Menu\\Programs\\nvsphelper1.exe\""	e96e34b282bc69781186afab0f60e5b8.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1840 set thread context of 1764	1840	e96e34b282bc69781186afab0f60e5b8.exe	29
PID 1280 set thread context of 1996	1280	qhlwrm.exe	35

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 9 IoCs

pid	Process
1840	e96e34b282bc69781186afab0f60e5b8.exe
1840	e96e34b282bc69781186afab0f60e5b8.exe
592	powershell.exe
1764	e96e34b282bc69781186afab0f60e5b8.exe
592	powershell.exe
1280	qhlwrm.exe
1280	qhlwrm.exe
1996	qhlwrm.exe
1996	qhlwrm.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	1840	e96e34b282bc69781186afab0f60e5b8.exe
Token: SeDebugPrivilege	1764	e96e34b282bc69781186afab0f60e5b8.exe
Token: SeDebugPrivilege	592	powershell.exe
Token: SeDebugPrivilege	1280	qhlwrm.exe
Token: SeDebugPrivilege	1996	qhlwrm.exe

Suspicious use of WriteProcessMemory 28 IoCs

description	pid	Process	procid_target
PID 1840 wrote to memory of 1764	1840	e96e34b282bc69781186afab0f60e5b8.exe	29
PID 1840 wrote to memory of 1764	1840	e96e34b282bc69781186afab0f60e5b8.exe	29
PID 1840 wrote to memory of 1764	1840	e96e34b282bc69781186afab0f60e5b8.exe	29
PID 1840 wrote to memory of 1764	1840	e96e34b282bc69781186afab0f60e5b8.exe	29
PID 1840 wrote to memory of 1764	1840	e96e34b282bc69781186afab0f60e5b8.exe	29
PID 1840 wrote to memory of 1764	1840	e96e34b282bc69781186afab0f60e5b8.exe	29
PID 1840 wrote to memory of 1764	1840	e96e34b282bc69781186afab0f60e5b8.exe	29
PID 1840 wrote to memory of 1764	1840	e96e34b282bc69781186afab0f60e5b8.exe	29
PID 1840 wrote to memory of 1764	1840	e96e34b282bc69781186afab0f60e5b8.exe	29
PID 1764 wrote to memory of 1116	1764	e96e34b282bc69781186afab0f60e5b8.exe	31
PID 1764 wrote to memory of 1116	1764	e96e34b282bc69781186afab0f60e5b8.exe	31
PID 1764 wrote to memory of 1116	1764	e96e34b282bc69781186afab0f60e5b8.exe	31
PID 1764 wrote to memory of 1116	1764	e96e34b282bc69781186afab0f60e5b8.exe	31
PID 1116 wrote to memory of 592	1116	cmd.exe	33
PID 1116 wrote to memory of 592	1116	cmd.exe	33
PID 1116 wrote to memory of 592	1116	cmd.exe	33
PID 1116 wrote to memory of 592	1116	cmd.exe	33
PID 592 wrote to memory of 1280	592	powershell.exe	34
PID 592 wrote to memory of 1280	592	powershell.exe	34
PID 592 wrote to memory of 1280	592	powershell.exe	34
PID 592 wrote to memory of 1280	592	powershell.exe	34
PID 1280 wrote to memory of 1996	1280	qhlwrm.exe	35
PID 1280 wrote to memory of 1996	1280	qhlwrm.exe	35
PID 1280 wrote to memory of 1996	1280	qhlwrm.exe	35
PID 1280 wrote to memory of 1996	1280	qhlwrm.exe	35
PID 1280 wrote to memory of 1996	1280	qhlwrm.exe	35
PID 1280 wrote to memory of 1996	1280	qhlwrm.exe	35
PID 1280 wrote to memory of 1996	1280	qhlwrm.exe	35

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:1840
- 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:1764
- - 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\qhlwrm.exe"' & exit
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1116
  - - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      powershell –ExecutionPolicy Bypass Start-Process -FilePath '"C:\Users\Admin\AppData\Local\Temp\qhlwrm.exe"'
      4⤵
      Loads dropped DLL
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:592
    - - C:\Users\Admin\AppData\Local\Temp\qhlwrm.exe
        
        "C:\Users\Admin\AppData\Local\Temp\qhlwrm.exe"
        5⤵
        Executes dropped EXE
        Loads dropped DLL
        Suspicious use of SetThreadContext
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        Suspicious use of WriteProcessMemory
        
        PID:1280
      - C:\Users\Admin\AppData\Local\Temp\qhlwrm.exe
        
        C:\Users\Admin\AppData\Local\Temp\qhlwrm.exe
        6⤵
        Executes dropped EXE
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:1996

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/592-93-0x00000000057F0000-0x00000000057F1000-memory.dmp

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memory/592-101-0x000000007EF30000-0x000000007EF31000-memory.dmp

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memory/592-100-0x0000000005880000-0x0000000005881000-memory.dmp

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memory/592-84-0x0000000002750000-0x0000000002751000-memory.dmp

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memory/592-92-0x0000000005670000-0x0000000005671000-memory.dmp

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memory/592-87-0x0000000005620000-0x0000000005621000-memory.dmp

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memory/592-78-0x0000000074D91000-0x0000000074D93000-memory.dmp

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memory/592-79-0x0000000000960000-0x0000000000961000-memory.dmp

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memory/592-80-0x0000000004960000-0x0000000004961000-memory.dmp

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memory/592-81-0x0000000002600000-0x0000000002601000-memory.dmp

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memory/592-82-0x0000000004920000-0x0000000004921000-memory.dmp

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memory/592-83-0x0000000004922000-0x0000000004923000-memory.dmp

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memory/1280-114-0x0000000002830000-0x000000000289B000-memory.dmp

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memory/1280-115-0x0000000002556000-0x0000000002575000-memory.dmp

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memory/1280-108-0x0000000002550000-0x0000000002552000-memory.dmp

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memory/1280-106-0x0000000000E80000-0x0000000000E81000-memory.dmp

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memory/1280-109-0x000000001C660000-0x000000001C71E000-memory.dmp

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memory/1764-75-0x0000000004220000-0x000000000423B000-memory.dmp

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memory/1764-72-0x0000000000400000-0x000000000042C000-memory.dmp

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memory/1764-70-0x0000000000400000-0x000000000042C000-memory.dmp

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memory/1764-74-0x0000000004DE0000-0x0000000004DE1000-memory.dmp

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memory/1840-60-0x0000000000B80000-0x0000000000B81000-memory.dmp

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memory/1840-69-0x0000000004EE5000-0x0000000004EF6000-memory.dmp

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memory/1840-63-0x0000000004D30000-0x0000000004D97000-memory.dmp

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memory/1840-62-0x0000000004EE0000-0x0000000004EE1000-memory.dmp

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memory/1840-68-0x0000000007EF0000-0x0000000007F5B000-memory.dmp

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memory/1996-117-0x0000000140000000-0x0000000140070000-memory.dmp

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memory/1996-122-0x00000000025E0000-0x0000000002663000-memory.dmp

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memory/1996-123-0x000000001BAC0000-0x000000001BAC2000-memory.dmp

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memory/1996-124-0x0000000002450000-0x000000000249E000-memory.dmp

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memory/1996-125-0x0000000000DB0000-0x0000000000DB5000-memory.dmp

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memory/1996-126-0x000000001AE30000-0x000000001AE7F000-memory.dmp

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memory/1996-127-0x000000001B560000-0x000000001B5A6000-memory.dmp

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