General

  • Target

    Purchase Order.exe

  • Size

    282KB

  • Sample

    200816-5yklmkd61s

  • MD5

    b861f4c2cd486258a79a2078c58885e8

  • SHA1

    a52c73cecef8c37bcaf95aeeb456580544a6e27c

  • SHA256

    e0dd9126e9038ec946d016833bad57afb1d3eb06e453ec8a0bdd60661e6a3da2

  • SHA512

    2d51a0096e6c99209bbd020f8523143c1651567296e3123cc4650e9809dc5c5f560fa8b1848d18cd240a53f5ae9fcfbf11bca98eb04d2a678f6d45c682d36371

Malware Config

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    mail.aviner.co.za
  • Port:
    587
  • Username:
    christine@aviner.co.za
  • Password:
    NoLimits@

Targets

    • Target

      Purchase Order.exe

    • Size

      282KB

    • MD5

      b861f4c2cd486258a79a2078c58885e8

    • SHA1

      a52c73cecef8c37bcaf95aeeb456580544a6e27c

    • SHA256

      e0dd9126e9038ec946d016833bad57afb1d3eb06e453ec8a0bdd60661e6a3da2

    • SHA512

      2d51a0096e6c99209bbd020f8523143c1651567296e3123cc4650e9809dc5c5f560fa8b1848d18cd240a53f5ae9fcfbf11bca98eb04d2a678f6d45c682d36371

    • Cheetah Keylogger

      Cheetah is a keylogger and info stealer first seen in March 2020.

    • Cheetah Keylogger Payload

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads data files stored by FTP clients

      Tries to access configuration files associated with programs like FileZilla.

    • Reads user/profile data of local email clients

      Email clients store some user data on disk where infostealers will often target it.

    • Reads user/profile data of web browsers

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

    • Looks up external IP address via web service

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

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v6

Defense Evasion

Install Root Certificate

1
T1130

Modify Registry

1
T1112

Credential Access

Credentials in Files

3
T1081

Collection

Data from Local System

3
T1005

Tasks