Analysis

  • max time kernel
    95s
  • max time network
    124s
  • platform
    windows10_x64
  • resource
    win10
  • submitted
    30-06-2020 12:30

General

  • Target

    1.exe

  • Size

    2.0MB

  • MD5

    f8290f2d593a05ea811edbd3bff6eacc

  • SHA1

    497985116f4ebaa05f1774c16adb5aa52b8e9756

  • SHA256

    01aa2cf8db4badde36f1896d341e31c0fe91a51772f1aa50b9f59ba368973993

  • SHA512

    97e4563b6112e4f6c7ee46cc1e18de931d4e052d387e6c37f7fdd7d352ef817778bd95041eeaf05e2bdf657afa1b09e52f4933ca22c6ea8f98983d8c13b56c14

Malware Config

Signatures

  • Enumerates connected drives 3 TTPs
  • System policy modification 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 650 IoCs
  • Suspicious use of WriteProcessMemory 18 IoCs
  • Suspicious use of AdjustPrivilegeToken 66 IoCs
  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

  • Drops desktop.ini file(s) 1 IoCs
  • UAC bypass 3 TTPs 2 IoCs
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Modifies service 2 TTPs 4 IoCs
  • Looks up external IP address via web service 2 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Interacts with shadow copies 2 TTPs 3 IoCs

    Shadow copies are often targeted by ransomware to inhibit system recovery.

Processes

  • C:\Users\Admin\AppData\Local\Temp\1.exe
    "C:\Users\Admin\AppData\Local\Temp\1.exe"
    1⤵
    • System policy modification
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    • Drops desktop.ini file(s)
    • UAC bypass
    • Checks whether UAC is enabled
    PID:3888
    • C:\Windows\SysWOW64\Wbem\wmic.exe
      wmic.exe SHADOWCOPY /nointeractive
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:3364
    • C:\Windows\SysWOW64\vssadmin.exe
      vssadmin.exe Delete Shadows /All /Quiet
      2⤵
      • Interacts with shadow copies
      PID:1964
    • C:\Windows\SysWOW64\Wbem\wmic.exe
      wmic.exe SHADOWCOPY /nointeractive
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:2516
    • C:\Windows\SysWOW64\vssadmin.exe
      vssadmin.exe Delete Shadows /All /Quiet
      2⤵
      • Interacts with shadow copies
      PID:552
    • C:\Windows\SysWOW64\Wbem\wmic.exe
      wmic.exe SHADOWCOPY /nointeractive
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:1000
    • C:\Windows\SysWOW64\vssadmin.exe
      vssadmin.exe Delete Shadows /All /Quiet
      2⤵
      • Interacts with shadow copies
      PID:1200
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    • Modifies service
    PID:2220

Network

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Modify Existing Service

1
T1031

Privilege Escalation

Bypass User Account Control

1
T1088

Defense Evasion

Modify Registry

3
T1112

File Deletion

2
T1107

Bypass User Account Control

1
T1088

Disabling Security Tools

1
T1089

Discovery

Query Registry

1
T1012

Peripheral Device Discovery

1
T1120

System Information Discovery

2
T1082

Impact

Inhibit System Recovery

2
T1490

Replay Monitor

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Downloads

  • memory/552-3-0x0000000000000000-mapping.dmp
  • memory/1000-4-0x0000000000000000-mapping.dmp
  • memory/1200-5-0x0000000000000000-mapping.dmp
  • memory/1964-1-0x0000000000000000-mapping.dmp
  • memory/2516-2-0x0000000000000000-mapping.dmp
  • memory/3364-0-0x0000000000000000-mapping.dmp