Overview

overview

10

Static

static

10

a8535d5778...d5.exe

windows7_x64

8

a8535d5778...d5.exe

windows10_x64

8

Analysis

  • max time kernel
    151s
  • max time network
    149s
  • platform
    windows10_x64
  • resource
    win10-en-20211104
  • submitted
    11-11-2021 01:21

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General

  • Target

    a8535d5778f0d6177d4a0f6623ae7ad5.exe

  • Size

    37KB

  • MD5

    a8535d5778f0d6177d4a0f6623ae7ad5

  • SHA1

    a45fdd4f8b93faf01e70a3635d3ea0dd8ffd9d52

  • SHA256

    0f9a62ff1c6cd64e3f114e61890c62c3e7ac67f1b96010e0d5017386aae9d845

  • SHA512

    c5d3d52329f6147c4688970efdeb3a2ef7f491c4ebd9f78598557f08aa039a6fadd194e6a76edd9d931d493c3fb6f65c787002f08f8c57db52c67de0f766f0b5

Score
8/10
evasionpersistence

Malware Config

Signatures

  • Modifies Windows Firewall 1 TTPs
    evasion
  • Drops startup file 2 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
    persistence
  • Drops autorun.inf file 1 TTPs

    Malware can abuse Windows Autorun to spread further via attached volumes.

  • Kills process with taskkill 1 IoCs
    evasion
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 36 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a8535d5778f0d6177d4a0f6623ae7ad5.exe
    "C:\Users\Admin\AppData\Local\Temp\a8535d5778f0d6177d4a0f6623ae7ad5.exe"
    1⤵
    • Drops startup file
    • Adds Run key to start application
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4036
    • C:\Windows\SysWOW64\netsh.exe
      netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\a8535d5778f0d6177d4a0f6623ae7ad5.exe" "a8535d5778f0d6177d4a0f6623ae7ad5.exe" ENABLE
      2⤵
        PID:4376
      • C:\Windows\SysWOW64\taskkill.exe
        taskkill /F /IM Exsample.exe
        2⤵
        • Kills process with taskkill
        • Suspicious use of AdjustPrivilegeToken
        PID:4344

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Initial Access

    Replication Through Removable Media

    1
    T1091

    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

    Lateral Movement

    Replication Through Removable Media

    1
    T1091

    Collection

    Exfiltration

    Command and Control

    Impact

    Replay Monitor

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    Downloads

    • memory/4036-118-0x0000000002700000-0x0000000002701000-memory.dmp
      Filesize

      4KB

      Download
    • memory/4344-120-0x0000000000000000-mapping.dmp
      Download
    • memory/4376-119-0x0000000000000000-mapping.dmp
      Download