Analysis

  • max time kernel
    106s
  • max time network
    109s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    18-01-2021 08:20

General

  • Target

    PO-09IOIOOUIR.exe

  • Size

    23KB

  • MD5

    b644ad55edc241dc9ee0b7bdb55c8704

  • SHA1

    d0f4162b77fd7e63fb175c061395beaa379e233d

  • SHA256

    be2ff52ed353429d954a579493e0d95571a1da3edbecd6328bf3ef76a47aeda0

  • SHA512

    3ff994c5d5442f2047cf31117e47e60d3d58e6a8663b6a2cacb64982f5deb8488c037470d2087e5b73c3f8253f5b193a9e621ad51756d2dd05034a75fbe141d9

Malware Config

Signatures

  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • Snake Keylogger

    Keylogger and Infostealer first seen in November 2020.

  • Snake Keylogger Payload 7 IoCs
  • Drops startup file 2 IoCs
  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • Reads user/profile data of local email clients 2 TTPs

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

  • Reads user/profile data of web browsers 2 TTPs

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

  • Adds Run key to start application 2 TTPs 2 IoCs
  • Looks up external IP address via web service 7 IoCs

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

  • Suspicious use of NtSetInformationThreadHideFromDebugger 12 IoCs
  • Suspicious use of SetThreadContext 5 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of WriteProcessMemory 40 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\PO-09IOIOOUIR.exe
    "C:\Users\Admin\AppData\Local\Temp\PO-09IOIOOUIR.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Drops startup file
    • Adds Run key to start application
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1276
    • C:\Users\Admin\AppData\Local\Temp\PO-09IOIOOUIR.exe
      "C:\Users\Admin\AppData\Local\Temp\PO-09IOIOOUIR.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2620
    • C:\Users\Admin\AppData\Local\Temp\PO-09IOIOOUIR.exe
      "C:\Users\Admin\AppData\Local\Temp\PO-09IOIOOUIR.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:572
    • C:\Users\Admin\AppData\Local\Temp\PO-09IOIOOUIR.exe
      "C:\Users\Admin\AppData\Local\Temp\PO-09IOIOOUIR.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2864
    • C:\Users\Admin\AppData\Local\Temp\PO-09IOIOOUIR.exe
      "C:\Users\Admin\AppData\Local\Temp\PO-09IOIOOUIR.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2584
    • C:\Users\Admin\AppData\Local\Temp\PO-09IOIOOUIR.exe
      "C:\Users\Admin\AppData\Local\Temp\PO-09IOIOOUIR.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2648

Network

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

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\PO-09IOIOOUIR.exe.log
    MD5

    4d710ca9c563bbb76bb29b87d5d64282

    SHA1

    2b1271f68a5d18e1c1bb08800a9cc9464e8a81ad

    SHA256

    6c7ac5cff014a13315b8813524bbd14471f1ab7aac691be94d4d4f28e4cd2de4

    SHA512

    873c9ee04e4f8d23f8cf90ffea89a362e8eda43c0cfc6bb47442f93e0add8794c004081350cfbd7cfaed6d101582287b26a00951d4019dfb466f21514e5d90d6

  • memory/572-14-0x00000000004643BE-mapping.dmp
  • memory/572-48-0x00000000053F0000-0x00000000053F1000-memory.dmp
    Filesize

    4KB

  • memory/572-16-0x0000000073D20000-0x000000007440E000-memory.dmp
    Filesize

    6.9MB

  • memory/1276-8-0x0000000004C50000-0x0000000004C51000-memory.dmp
    Filesize

    4KB

  • memory/1276-28-0x0000000002540000-0x0000000002541000-memory.dmp
    Filesize

    4KB

  • memory/1276-9-0x0000000002550000-0x0000000002551000-memory.dmp
    Filesize

    4KB

  • memory/1276-10-0x0000000005BD0000-0x0000000005C70000-memory.dmp
    Filesize

    640KB

  • memory/1276-3-0x0000000000280000-0x0000000000281000-memory.dmp
    Filesize

    4KB

  • memory/1276-2-0x0000000073D20000-0x000000007440E000-memory.dmp
    Filesize

    6.9MB

  • memory/1276-7-0x0000000002530000-0x0000000002531000-memory.dmp
    Filesize

    4KB

  • memory/1276-6-0x0000000004B10000-0x0000000004B11000-memory.dmp
    Filesize

    4KB

  • memory/1276-5-0x0000000005010000-0x0000000005011000-memory.dmp
    Filesize

    4KB

  • memory/2584-26-0x0000000073D20000-0x000000007440E000-memory.dmp
    Filesize

    6.9MB

  • memory/2584-51-0x00000000050D0000-0x00000000050D1000-memory.dmp
    Filesize

    4KB

  • memory/2584-23-0x00000000004643BE-mapping.dmp
  • memory/2620-15-0x0000000073D20000-0x000000007440E000-memory.dmp
    Filesize

    6.9MB

  • memory/2620-49-0x00000000050C0000-0x00000000050C1000-memory.dmp
    Filesize

    4KB

  • memory/2620-12-0x00000000004643BE-mapping.dmp
  • memory/2620-11-0x0000000000400000-0x000000000046A000-memory.dmp
    Filesize

    424KB

  • memory/2648-35-0x0000000073D20000-0x000000007440E000-memory.dmp
    Filesize

    6.9MB

  • memory/2648-31-0x00000000004643BE-mapping.dmp
  • memory/2648-52-0x0000000005720000-0x0000000005721000-memory.dmp
    Filesize

    4KB

  • memory/2864-20-0x0000000073D20000-0x000000007440E000-memory.dmp
    Filesize

    6.9MB

  • memory/2864-50-0x0000000005660000-0x0000000005661000-memory.dmp
    Filesize

    4KB

  • memory/2864-18-0x00000000004643BE-mapping.dmp
  • memory/2864-53-0x00000000067B0000-0x00000000067B1000-memory.dmp
    Filesize

    4KB