Analysis

  • max time kernel
    53s
  • max time network
    122s
  • platform
    windows10_x64
  • resource
    win10v20210410
  • submitted
    22-07-2021 12:36

General

  • Target

    whesilox.exe

  • Size

    715KB

  • MD5

    facd1c07ffcfb16de518d0c977814d92

  • SHA1

    27aa313a64ff37d6c31bd1a0a9953f00a48b3408

  • SHA256

    e7488c44d2b9f78f7c5e96126798220cbc3a7faf749beab4b8545207a73ce0d1

  • SHA512

    b6332e6de6b41014db759a1fb0c25996ee20f8be1c4f1a792d957a2b7edbb366b0378884e82fc497f707589ad1afd0bfc3b83c69919e897f8b9acf13edb10f33

Malware Config

Extracted

Family

snakekeylogger

Credentials

  • Protocol:
    smtp
  • Host:
    bh-16.webhostbox.net
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    7213575aceACE@#$

Signatures

  • Snake Keylogger

    Keylogger and Infostealer first seen in November 2020.

  • 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.

  • 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 SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\whesilox.exe
    "C:\Users\Admin\AppData\Local\Temp\whesilox.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:3908
    • C:\Users\Admin\AppData\Local\Temp\whesilox.exe
      "C:\Users\Admin\AppData\Local\Temp\whesilox.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1128

Network

MITRE ATT&CK Matrix ATT&CK v6

Credential Access

Credentials in Files

3
T1081

Collection

Data from Local System

3
T1005

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\whesilox.exe.log
    MD5

    c3cc52ccca9ff2b6fa8d267fc350ca6b

    SHA1

    a68d4028333296d222e4afd75dea36fdc98d05f3

    SHA256

    3125b6071e2d78f575a06ed7ac32a83d9262ae64d1fa81ac43e8bfc1ef157c0e

    SHA512

    b0c7b2501b1a2c559795a9d178c0bbda0e03cbdbaaa2c4330ac1202a55373fe1b742078adcfa915bd6e805565a2daa6d35d64ef7a14ffcd09069f9ea6a691cc7

  • memory/1128-124-0x0000000000400000-0x0000000000424000-memory.dmp
    Filesize

    144KB

  • memory/1128-132-0x0000000006900000-0x0000000006901000-memory.dmp
    Filesize

    4KB

  • memory/1128-131-0x00000000054F0000-0x00000000059EE000-memory.dmp
    Filesize

    5.0MB

  • memory/1128-125-0x000000000041F89E-mapping.dmp
  • memory/3908-118-0x0000000004F60000-0x0000000004F61000-memory.dmp
    Filesize

    4KB

  • memory/3908-121-0x00000000051C0000-0x00000000051DB000-memory.dmp
    Filesize

    108KB

  • memory/3908-122-0x0000000008530000-0x0000000008594000-memory.dmp
    Filesize

    400KB

  • memory/3908-123-0x0000000006C70000-0x0000000006C96000-memory.dmp
    Filesize

    152KB

  • memory/3908-120-0x0000000004E20000-0x000000000531E000-memory.dmp
    Filesize

    5.0MB

  • memory/3908-119-0x0000000004E30000-0x0000000004E31000-memory.dmp
    Filesize

    4KB

  • memory/3908-114-0x0000000000540000-0x0000000000541000-memory.dmp
    Filesize

    4KB

  • memory/3908-117-0x0000000004EC0000-0x0000000004EC1000-memory.dmp
    Filesize

    4KB

  • memory/3908-116-0x0000000005320000-0x0000000005321000-memory.dmp
    Filesize

    4KB