General

  • Target

    PO-09IOIOOUIR.exe

  • Size

    23KB

  • Sample

    210118-rw9vls3pfe

  • MD5

    b644ad55edc241dc9ee0b7bdb55c8704

  • SHA1

    d0f4162b77fd7e63fb175c061395beaa379e233d

  • SHA256

    be2ff52ed353429d954a579493e0d95571a1da3edbecd6328bf3ef76a47aeda0

  • SHA512

    3ff994c5d5442f2047cf31117e47e60d3d58e6a8663b6a2cacb64982f5deb8488c037470d2087e5b73c3f8253f5b193a9e621ad51756d2dd05034a75fbe141d9

Malware Config

Targets

    • Target

      PO-09IOIOOUIR.exe

    • Size

      23KB

    • MD5

      b644ad55edc241dc9ee0b7bdb55c8704

    • SHA1

      d0f4162b77fd7e63fb175c061395beaa379e233d

    • SHA256

      be2ff52ed353429d954a579493e0d95571a1da3edbecd6328bf3ef76a47aeda0

    • SHA512

      3ff994c5d5442f2047cf31117e47e60d3d58e6a8663b6a2cacb64982f5deb8488c037470d2087e5b73c3f8253f5b193a9e621ad51756d2dd05034a75fbe141d9

    • Modifies WinLogon for persistence

    • Snake Keylogger

      Keylogger and Infostealer first seen in November 2020.

    • Snake Keylogger Payload

    • Drops startup file

    • 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.

    • Adds Run key to start application

    • 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

Persistence

Winlogon Helper DLL

1
T1004

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Modify Registry

2
T1112

Credential Access

Credentials in Files

3
T1081

Collection

Data from Local System

3
T1005

Tasks