Overview

overview

10

Static

static

c4ef4eccfd...43.exe

windows7_x64

10

c4ef4eccfd...43.exe

windows10-2004_x64

10

Analysis

  • max time kernel
    59s
  • max time network
    62s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    24-05-2022 16:12

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General

  • Target

    c4ef4eccfd7797c2a7e0a26e237e9489e8ecdfa38d25e3d4d0b9f259470d8543.exe

  • Size

    824KB

  • MD5

    8b7df26c62ae59859e08096fd12cf199

  • SHA1

    5879a5399d91a57d2327584ccce8b8654e60b642

  • SHA256

    c4ef4eccfd7797c2a7e0a26e237e9489e8ecdfa38d25e3d4d0b9f259470d8543

  • SHA512

    ddba02b074af7b559d78b6d9423fdd7a4247f8f66a2d624605293a5789534c78e4e8dac9cc7c814970d14c338d906de71ef5951453a2911a800a0ac42a28e10d

Score
10/10
massloggercollectionransomwarerezer0spywarestealer

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Local\Temp\79FE0CC911\Log.txt

Family

masslogger

Ransom Note
################################################################# MassLogger v1.3.7.0 ################################################################# ### Logger Details ### User Name: Admin IP: 154.61.71.51 Location: United States Windows OS: Microsoft Windows 7 Ultimate 64bit Windows Serial Key: D4F6K-QK3RD-TMVMJ-BBMRX-3MBMV CPU: Intel Core Processor (Broadwell) GPU: Standard VGA Graphics Adapter AV: NA Screen Resolution: 1280x720 Current Time: 5/24/2022 4:58:40 PM MassLogger Started: 5/24/2022 4:58:33 PM Interval: 2 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\c4ef4eccfd7797c2a7e0a26e237e9489e8ecdfa38d25e3d4d0b9f259470d8543.exe MassLogger Melt: false MassLogger Exit after delivery: true As Administrator: True Processes:

Extracted

Credentials

  • Protocol:     smtp
  • Host:
    smtp.yandex.com
  • Port:
    587
  • Username:
    tonyrikardo@yandex.com
  • Password:
    akachukwu123@

Signatures

  • MassLogger

    Masslogger is a .NET stealer targeting passwords from browsers, email and cryptocurrency clients.

    stealerspywaremasslogger
  • MassLogger Main Payload 6 IoCs
  • MassLogger log file 1 IoCs

    Detects a log file produced by MassLogger.

  • ReZer0 packer 1 IoCs

    Detects ReZer0, a packer with multiple versions used in various campaigns.

    rezer0
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Reads user/profile data of web browsers 2 TTPs

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

    spywarestealer
  • Accesses Microsoft Outlook profiles 1 TTPs 15 IoCs
    collection
  • 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
  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\c4ef4eccfd7797c2a7e0a26e237e9489e8ecdfa38d25e3d4d0b9f259470d8543.exe
    "C:\Users\Admin\AppData\Local\Temp\c4ef4eccfd7797c2a7e0a26e237e9489e8ecdfa38d25e3d4d0b9f259470d8543.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:812
    • C:\Users\Admin\AppData\Local\Temp\c4ef4eccfd7797c2a7e0a26e237e9489e8ecdfa38d25e3d4d0b9f259470d8543.exe
      "C:\Users\Admin\AppData\Local\Temp\c4ef4eccfd7797c2a7e0a26e237e9489e8ecdfa38d25e3d4d0b9f259470d8543.exe"
      2⤵
      • Checks computer location settings
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:1720

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

1
T1081

Discovery

Query Registry

1
T1012

System Information Discovery

1
T1082

Lateral Movement

Collection

Data from Local System

1
T1005

Email Collection

1
T1114

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

  • memory/812-54-0x0000000000CB0000-0x0000000000D84000-memory.dmp
    Filesize

    848KB

    Download
  • memory/812-55-0x0000000075FE1000-0x0000000075FE3000-memory.dmp
    Filesize

    8KB

    Download
  • memory/812-56-0x0000000000380000-0x0000000000388000-memory.dmp
    Filesize

    32KB

    Download
  • memory/812-57-0x0000000005C60000-0x0000000005D10000-memory.dmp
    Filesize

    704KB

    Download
  • memory/1720-58-0x0000000000400000-0x00000000004A8000-memory.dmp
    Filesize

    672KB

    Download
  • memory/1720-59-0x0000000000400000-0x00000000004A8000-memory.dmp
    Filesize

    672KB

    Download
  • memory/1720-62-0x0000000000400000-0x00000000004A8000-memory.dmp
    Filesize

    672KB

    Download
  • memory/1720-61-0x0000000000400000-0x00000000004A8000-memory.dmp
    Filesize

    672KB

    Download
  • memory/1720-63-0x0000000000400000-0x00000000004A8000-memory.dmp
    Filesize

    672KB

    Download
  • memory/1720-64-0x00000000004A2AFE-mapping.dmp
    Download
  • memory/1720-66-0x0000000000400000-0x00000000004A8000-memory.dmp
    Filesize

    672KB

    Download
  • memory/1720-68-0x0000000000400000-0x00000000004A8000-memory.dmp
    Filesize

    672KB

    Download
  • memory/1720-69-0x00000000006E0000-0x0000000000724000-memory.dmp
    Filesize

    272KB

    Download
  • memory/1720-71-0x00000000004E5000-0x00000000004F6000-memory.dmp
    Filesize

    68KB

    Download
  • memory/1720-72-0x0000000000820000-0x0000000000834000-memory.dmp
    Filesize

    80KB

    Download