7dfe9fb2dd051a3f288cac8ca4e09bc6eaae80e875a0e2946d832261ee357268

Analysis

max time kernel
150s
max time network
148s
platform
windows10_x64
resource
win10v20201028
submitted
30/12/2020, 15:44

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General

Target
383d3e2a3cc55001a73283a501d925f5.exe
Size 452KB
Sample201230-h5fhl1pw12
SHA256 7dfe9fb2dd051a3f288cac8ca4e09bc6eaae80e875a0e2946d832261ee357268
MD5 383d3e2a3cc55001a73283a501d925f5
SHA1 20fd4463b7b27f8576c61683cc60830494359be7
SHA512 f12f1d675e818fe8df85d2f2d0a18f684ba335cd3807a9a408519ee91828d99f368b099cd652d8ebfbf5715d52299dd3ddd1497fa086028a06721571b139eb86
MD5 SHA1 SHA512

Score

8^/10

Malware Config

Signatures

Blocklisted process makes network request 1 IoCs

flow	pid	Process
25	1548	rundll32.exe

Executes dropped EXE 1 IoCs

pid	Process
1556	nethelper.exe

Loads dropped DLL 1 IoCs

pid	Process
1548	rundll32.exe

Creates scheduled task(s) 1 TTPs 2 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task

T1053

pid	Process
1768	schtasks.exe
4020	schtasks.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
988	timeout.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1548	rundll32.exe
1548	rundll32.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 4768 wrote to memory of 2808	4768	383d3e2a3cc55001a73283a501d925f5.exe	78
PID 4768 wrote to memory of 2808	4768	383d3e2a3cc55001a73283a501d925f5.exe	78
PID 4768 wrote to memory of 2808	4768	383d3e2a3cc55001a73283a501d925f5.exe	78
PID 4768 wrote to memory of 3176	4768	383d3e2a3cc55001a73283a501d925f5.exe	80
PID 4768 wrote to memory of 3176	4768	383d3e2a3cc55001a73283a501d925f5.exe	80
PID 4768 wrote to memory of 3176	4768	383d3e2a3cc55001a73283a501d925f5.exe	80
PID 2808 wrote to memory of 856	2808	cmd.exe	82
PID 2808 wrote to memory of 856	2808	cmd.exe	82
PID 2808 wrote to memory of 856	2808	cmd.exe	82
PID 3176 wrote to memory of 988	3176	cmd.exe	83
PID 3176 wrote to memory of 988	3176	cmd.exe	83
PID 3176 wrote to memory of 988	3176	cmd.exe	83
PID 4768 wrote to memory of 608	4768	383d3e2a3cc55001a73283a501d925f5.exe	84
PID 4768 wrote to memory of 608	4768	383d3e2a3cc55001a73283a501d925f5.exe	84
PID 4768 wrote to memory of 608	4768	383d3e2a3cc55001a73283a501d925f5.exe	84
PID 4768 wrote to memory of 1108	4768	383d3e2a3cc55001a73283a501d925f5.exe	86
PID 4768 wrote to memory of 1108	4768	383d3e2a3cc55001a73283a501d925f5.exe	86
PID 4768 wrote to memory of 1108	4768	383d3e2a3cc55001a73283a501d925f5.exe	86
PID 608 wrote to memory of 1376	608	cmd.exe	88
PID 608 wrote to memory of 1376	608	cmd.exe	88
PID 608 wrote to memory of 1376	608	cmd.exe	88
PID 1108 wrote to memory of 1548	1108	cmd.exe	89
PID 1108 wrote to memory of 1548	1108	cmd.exe	89
PID 1108 wrote to memory of 1548	1108	cmd.exe	89
PID 3176 wrote to memory of 1768	3176	cmd.exe	90
PID 3176 wrote to memory of 1768	3176	cmd.exe	90
PID 3176 wrote to memory of 1768	3176	cmd.exe	90
PID 1548 wrote to memory of 4428	1548	rundll32.exe	91
PID 1548 wrote to memory of 4428	1548	rundll32.exe	91
PID 1548 wrote to memory of 4428	1548	rundll32.exe	91
PID 4428 wrote to memory of 4020	4428	cmd.exe	93
PID 4428 wrote to memory of 4020	4428	cmd.exe	93
PID 4428 wrote to memory of 4020	4428	cmd.exe	93

C:\Users\Admin\AppData\Local\Temp\383d3e2a3cc55001a73283a501d925f5.exe
"C:\Users\Admin\AppData\Local\Temp\383d3e2a3cc55001a73283a501d925f5.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:4768
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C reg add "HKEY_CURRENT_USER\Software\NetHelper" /v path /t REG_SZ /d C:\ProgramData\NetHelper\Cache\LQzwDYscNuYtnQxwaFVA /f
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2808
- - C:\Windows\SysWOW64\reg.exe
    reg add "HKEY_CURRENT_USER\Software\NetHelper" /v path /t REG_SZ /d C:\ProgramData\NetHelper\Cache\LQzwDYscNuYtnQxwaFVA /f
    3⤵
    PID:856
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C timeout /t 60 && SCHTASKS /Create /SC MINUTE /MO 1 /TN "Service for windows Network Helper updates" /TR C:\ProgramData\NetHelper\Cache\LQzwDYscNuYtnQxwaFVA\àÇwnethelper.exe /F
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3176
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 60
    3⤵
    - Delays execution with timeout.exe
    PID:988
- - C:\Windows\SysWOW64\schtasks.exe
    SCHTASKS /Create /SC MINUTE /MO 1 /TN "Service for windows Network Helper updates" /TR C:\ProgramData\NetHelper\Cache\LQzwDYscNuYtnQxwaFVA\àÇwnethelper.exe /F
    3⤵
    - Creates scheduled task(s)
    PID:1768
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C reg add "HKEY_CURRENT_USER\Software\NetHelper" /v library /t REG_SZ /d C:\ProgramData\NetHelper\Cache\LQzwDYscNuYtnQxwaFVA\nethelper.dll /f && EXIT 0
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:608
- - C:\Windows\SysWOW64\reg.exe
    reg add "HKEY_CURRENT_USER\Software\NetHelper" /v library /t REG_SZ /d C:\ProgramData\NetHelper\Cache\LQzwDYscNuYtnQxwaFVA\nethelper.dll /f
    3⤵
    PID:1376
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C rundll32.exe C:\ProgramData\NetHelper\Cache\LQzwDYscNuYtnQxwaFVA\nethelper.dll, UserModeExport
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1108
- - C:\Windows\SysWOW64\rundll32.exe
    rundll32.exe C:\ProgramData\NetHelper\Cache\LQzwDYscNuYtnQxwaFVA\nethelper.dll, UserModeExport
    3⤵
    - Blocklisted process makes network request
    - Loads dropped DLL
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:1548
  - - C:\Windows\SysWOW64\cmd.exe
      C:\Windows\System32\cmd.exe /C SCHTASKS /Create /SC MINUTE /MO 1 /TN "Service for windows Network Helper updates" /TR C:\Users\Admin\AppData\Local\Temp\nethelper.exe /F
      4⤵
      Suspicious use of WriteProcessMemory
      PID:4428
    - - C:\Windows\SysWOW64\schtasks.exe
        
        SCHTASKS /Create /SC MINUTE /MO 1 /TN "Service for windows Network Helper updates" /TR C:\Users\Admin\AppData\Local\Temp\nethelper.exe /F
        5⤵
        Creates scheduled task(s)
        
        PID:4020

C:\Users\Admin\AppData\Local\Temp\nethelper.exe
C:\Users\Admin\AppData\Local\Temp\nethelper.exe
1⤵
- Executes dropped EXE
PID:1556

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/4768-2-0x0000000004CA0000-0x0000000004CA1000-memory.dmp

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