Analysis

  • max time kernel
    72s
  • max time network
    74s
  • platform
    windows10_x64
  • resource
    win10v200722
  • submitted
    04-08-2020 21:46

General

  • Target

    Build111.exe

  • Size

    1.2MB

  • MD5

    71d8f70fcd46f5d2a88a2f9d40cebf38

  • SHA1

    300bcbbfd56740f21e1af62f0a4b67df4bdfffd3

  • SHA256

    36f7bb3f776e1b4d97a2cf8cd65aac04593a797a8d46936d0900041995020465

  • SHA512

    8e86ad7493c5cd742c7212db0743323f1bc21ebd153b9fa56625b32c914a5a17817a91615f423d3e55dc2b5138e98b05eabed2730bd6f9a186b7beff53f13391

Malware Config

Signatures

  • Echelon

    Echelon is a .NET stealer that targets passwords from browsers, email and cryptocurrency clients.

  • Echelon log file 1 IoCs

    Detects a log file produced by Echelon.

  • Reads user/profile data of web browsers 2 TTPs

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

  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Looks up external IP address via web service 3 IoCs

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

  • Suspicious use of NtSetInformationThreadHideFromDebugger 13 IoCs
  • Suspicious behavior: EnumeratesProcesses 16 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Build111.exe
    "C:\Users\Admin\AppData\Local\Temp\Build111.exe"
    1⤵
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:3900

Network

MITRE ATT&CK Matrix ATT&CK v6

Credential Access

Credentials in Files

1
T1081

Discovery

Query Registry

1
T1012

Collection

Data from Local System

1
T1005

Replay Monitor

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Downloads