Analysis

  • max time kernel
    123s
  • max time network
    139s
  • platform
    windows10_x64
  • resource
    win10-en-20210920
  • submitted
    24-10-2021 03:07

General

  • Target

    askinstall59.exe

  • Size

    1.4MB

  • MD5

    91fc5a9d9ddf6868e41cba2eb0e8e92d

  • SHA1

    5bf358a41876254760650518cee379b1ad0c17d5

  • SHA256

    5876c046abaa28048e204be22470eeb20cbd975c25191a0ac8a5edd844a58aa0

  • SHA512

    d23f8687b4dbaa941b3cf954b63f141e7fc94ce5d362c9fd0ce8da03e049a14d803db61eb69c3da1db368623e6f79f2b7a02fab8316ec2b0693292642e9b6da1

Malware Config

Signatures

  • Socelars

    Socelars is an infostealer targeting browser cookies and credit card credentials.

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Enumerates physical storage devices 1 TTPs

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

  • Kills process with taskkill 1 IoCs
  • Modifies system certificate store 2 TTPs 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 35 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\askinstall59.exe
    "C:\Users\Admin\AppData\Local\Temp\askinstall59.exe"
    1⤵
    • Modifies system certificate store
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4000
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /c taskkill /f /im chrome.exe
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:788
      • C:\Windows\SysWOW64\taskkill.exe
        taskkill /f /im chrome.exe
        3⤵
        • Kills process with taskkill
        • Suspicious use of AdjustPrivilegeToken
        PID:4496

Network

MITRE ATT&CK Matrix ATT&CK v6

Defense Evasion

Install Root Certificate

1
T1130

Modify Registry

1
T1112

Credential Access

Credentials in Files

1
T1081

Discovery

System Information Discovery

1
T1082

Collection

Data from Local System

1
T1005

Command and Control

Web Service

1
T1102

Replay Monitor

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Downloads

  • memory/788-118-0x0000000000000000-mapping.dmp
  • memory/4496-119-0x0000000000000000-mapping.dmp