Overview

overview

8

Static

static

a4106262cd...81.exe

windows7_x64

8

a4106262cd...81.exe

windows10-2004_x64

8

Analysis

  • max time kernel
    189s
  • max time network
    199s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    20-05-2022 23:22

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General

  • Target

    a4106262cdaf3660f6825e88667e2970a48e897060f65f789f36db3fb7517181.exe

  • Size

    32KB

  • MD5

    f895f2c00c328e2d2a7bce695c63020f

  • SHA1

    6eea1cbe833845785c800348b5293ff6a1b8cb7a

  • SHA256

    a4106262cdaf3660f6825e88667e2970a48e897060f65f789f36db3fb7517181

  • SHA512

    3f351e7f3943c64c1e99eb03c92af8243589b2ff661b4fbf5f1a91af2db257c3209ac71014027ce5663e48e4b9d8c03ae29cf87bbd2d3fa5ee9289572cd0904e

Score
8/10
evasionpersistence

Malware Config

Signatures

  • Executes dropped EXE 1 IoCs
  • Modifies Windows Firewall 1 TTPs
    evasion
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Drops startup file 2 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
    persistence
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 50 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a4106262cdaf3660f6825e88667e2970a48e897060f65f789f36db3fb7517181.exe
    "C:\Users\Admin\AppData\Local\Temp\a4106262cdaf3660f6825e88667e2970a48e897060f65f789f36db3fb7517181.exe"
    1⤵
    • Checks computer location settings
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3568
    • C:\Users\Admin\AppData\Roaming\server.exe
      "C:\Users\Admin\AppData\Roaming\server.exe"
      2⤵
      • Executes dropped EXE
      • Drops startup file
      • Adds Run key to start application
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2564
      • C:\Windows\SysWOW64\netsh.exe
        netsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\server.exe" "server.exe" ENABLE
        3⤵
          PID:3812

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Initial Access

    Execution

    Persistence

    Modify Existing Service

    1
    T1031

    Registry Run Keys / Startup Folder

    1
    T1060

    Privilege Escalation

    Defense Evasion

    Modify Registry

    1
    T1112

    Credential Access

    Discovery

    Query Registry

    1
    T1012

    System Information Discovery

    2
    T1082

    Lateral Movement

    Collection

    Exfiltration

    Command and Control

    Impact

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Roaming\server.exe
      Filesize

      32KB

      MD5

      f895f2c00c328e2d2a7bce695c63020f

      SHA1

      6eea1cbe833845785c800348b5293ff6a1b8cb7a

      SHA256

      a4106262cdaf3660f6825e88667e2970a48e897060f65f789f36db3fb7517181

      SHA512

      3f351e7f3943c64c1e99eb03c92af8243589b2ff661b4fbf5f1a91af2db257c3209ac71014027ce5663e48e4b9d8c03ae29cf87bbd2d3fa5ee9289572cd0904e

      Download Submit
    • C:\Users\Admin\AppData\Roaming\server.exe
      Filesize

      32KB

      MD5

      f895f2c00c328e2d2a7bce695c63020f

      SHA1

      6eea1cbe833845785c800348b5293ff6a1b8cb7a

      SHA256

      a4106262cdaf3660f6825e88667e2970a48e897060f65f789f36db3fb7517181

      SHA512

      3f351e7f3943c64c1e99eb03c92af8243589b2ff661b4fbf5f1a91af2db257c3209ac71014027ce5663e48e4b9d8c03ae29cf87bbd2d3fa5ee9289572cd0904e

      Download Submit
    • memory/2564-131-0x0000000000000000-mapping.dmp
      Download
    • memory/2564-134-0x00000000746B0000-0x0000000074C61000-memory.dmp
      Filesize

      5.7MB

      Download
    • memory/3568-130-0x00000000746B0000-0x0000000074C61000-memory.dmp
      Filesize

      5.7MB

      Download
    • memory/3812-135-0x0000000000000000-mapping.dmp
      Download