Analysis

  • max time kernel
    151s
  • max time network
    139s
  • platform
    windows7_x64
  • resource
    win7v20210410
  • submitted
    31-05-2021 11:27

General

  • Target

    Statement SKBMT 09418.exe

  • Size

    993KB

  • MD5

    16fdc46350203434497e1741ea5cd20a

  • SHA1

    f75824509e9ce1b77194724fd34c60bc0c9d28f1

  • SHA256

    1018d102af9093b9a03abe9a660360db6be8f752d992bb7159475fccd78949f5

  • SHA512

    a71d6af40387a94c52d54438fea392969f5f0a330867dc7a2d05de5c07fdfb26724270ca3bbbfaf1ceddd2338254eb158e9ada092fa622315627f0b0553fee12

Malware Config

Signatures

  • A310logger

    A310 Logger is a .NET stealer/logger targeting passwords from browsers and email clients.

  • StormKitty

    StormKitty is an open source info stealer written in C#.

  • StormKitty Payload 2 IoCs
  • A310logger Executable 2 IoCs
  • Reads local data of messenger clients 2 TTPs

    Infostealers often target stored data of messaging applications, which can include saved credentials and account information.

  • 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 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Statement SKBMT 09418.exe
    "C:\Users\Admin\AppData\Local\Temp\Statement SKBMT 09418.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1104
    • C:\Users\Admin\AppData\Local\Temp\Statement SKBMT 09418.exe
      "C:\Users\Admin\AppData\Local\Temp\Statement SKBMT 09418.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:764
      • C:\Windows\Microsoft.NET\Framework\v2.0.50727\InstallUtil.exe
        "C:\Windows\Microsoft.NET\Framework\v2.0.50727\InstallUtil.exe"
        3⤵
        • Checks processor information in registry
        PID:584

Network

MITRE ATT&CK Matrix ATT&CK v6

Credential Access

Credentials in Files

1
T1081

Discovery

System Information Discovery

2
T1082

Query Registry

1
T1012

Collection

Data from Local System

1
T1005

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/584-71-0x0000000000400000-0x0000000000418000-memory.dmp
    Filesize

    96KB

  • memory/584-72-0x0000000000412452-mapping.dmp
  • memory/584-75-0x0000000001E60000-0x0000000001E61000-memory.dmp
    Filesize

    4KB

  • memory/764-66-0x0000000000400000-0x0000000000430000-memory.dmp
    Filesize

    192KB

  • memory/764-67-0x00000000004024E0-mapping.dmp
  • memory/764-70-0x0000000076E11000-0x0000000076E13000-memory.dmp
    Filesize

    8KB

  • memory/764-74-0x0000000000400000-0x0000000000430000-memory.dmp
    Filesize

    192KB

  • memory/1104-60-0x0000000000AF0000-0x0000000000AF1000-memory.dmp
    Filesize

    4KB

  • memory/1104-62-0x0000000000220000-0x0000000000224000-memory.dmp
    Filesize

    16KB

  • memory/1104-63-0x0000000004870000-0x0000000004871000-memory.dmp
    Filesize

    4KB

  • memory/1104-64-0x00000000050F0000-0x0000000005182000-memory.dmp
    Filesize

    584KB

  • memory/1104-65-0x0000000004390000-0x00000000043E4000-memory.dmp
    Filesize

    336KB