Analysis

  • max time kernel
    43s
  • max time network
    139s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    03-02-2023 19:19

General

  • Target

    SMGS.exe

  • Size

    4.8MB

  • MD5

    973d6bb15efd90c87c861bb50682b4e0

  • SHA1

    6be806023c19d7b332118bdc60ec2cabf4afd7a7

  • SHA256

    464bf35525b6f482b91e5a1ba287c58304e7c41558c8070e42bdaa19769b5b05

  • SHA512

    02355d9053c02c7470cdf6bde0a7d30ddf8a15a98c70dedf67a44639db3f92f1f961cb887e262b91eaeaeeef406e83c1294c690165afe2d7b50bae2e13896237

  • SSDEEP

    24576:VBgHFLM9d5M7WbzMdMp+5R6hIONsEQ/xWxPNnb1T/d+BIPFsKmQhhEG6veOSV1jF:

Malware Config

Extracted

Family

snakekeylogger

Credentials

Signatures

  • Detect PureCrypter injector 1 IoCs
  • PureCrypter

    PureCrypter is a .NET malware loader first seen in early 2021.

  • Snake Keylogger

    Keylogger and Infostealer first seen in November 2020.

  • Snake Keylogger payload 6 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.

  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Looks up external IP address via web service 1 IoCs

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

  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 13 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\SMGS.exe
    "C:\Users\Admin\AppData\Local\Temp\SMGS.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:848
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ENC cwB0AGEAcgB0AC0AcwBsAGUAZQBwACAALQBzAGUAYwBvAG4AZABzACAAMgAwAA==
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:272
    • C:\Users\Admin\AppData\Local\Temp\SMGS.exe
      C:\Users\Admin\AppData\Local\Temp\SMGS.exe
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:892

Network

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Modify Registry

1
T1112

Credential Access

Credentials in Files

3
T1081

Discovery

System Information Discovery

1
T1082

Collection

Data from Local System

3
T1005

Email Collection

1
T1114

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/272-56-0x0000000000000000-mapping.dmp
  • memory/272-57-0x0000000075601000-0x0000000075603000-memory.dmp
    Filesize

    8KB

  • memory/272-58-0x000000006F5A0000-0x000000006FB4B000-memory.dmp
    Filesize

    5.7MB

  • memory/272-59-0x000000006F5A0000-0x000000006FB4B000-memory.dmp
    Filesize

    5.7MB

  • memory/272-60-0x000000006F5A0000-0x000000006FB4B000-memory.dmp
    Filesize

    5.7MB

  • memory/848-54-0x0000000000900000-0x0000000000DC8000-memory.dmp
    Filesize

    4.8MB

  • memory/848-55-0x0000000006160000-0x00000000063C6000-memory.dmp
    Filesize

    2.4MB

  • memory/848-61-0x0000000004F30000-0x0000000004F7A000-memory.dmp
    Filesize

    296KB

  • memory/892-62-0x0000000000400000-0x0000000000426000-memory.dmp
    Filesize

    152KB

  • memory/892-63-0x0000000000400000-0x0000000000426000-memory.dmp
    Filesize

    152KB

  • memory/892-65-0x0000000000400000-0x0000000000426000-memory.dmp
    Filesize

    152KB

  • memory/892-67-0x0000000000400000-0x0000000000426000-memory.dmp
    Filesize

    152KB

  • memory/892-68-0x0000000000400000-0x0000000000426000-memory.dmp
    Filesize

    152KB

  • memory/892-69-0x000000000042073E-mapping.dmp
  • memory/892-71-0x0000000000400000-0x0000000000426000-memory.dmp
    Filesize

    152KB

  • memory/892-73-0x0000000000400000-0x0000000000426000-memory.dmp
    Filesize

    152KB