Overview

overview

10

Static

static

sampl request.exe

windows7_x64

10

sampl request.exe

windows10-2004_x64

10

Analysis

  • max time kernel
    107s
  • max time network
    151s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    21-05-2022 12:28

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General

  • Target

    sampl request.exe

  • Size

    879KB

  • MD5

    b9f272bf7b71dd282dc1b7f60ce75dfe

  • SHA1

    a9b1ccf8e78165bd891ef9d78fb9d39946e35901

  • SHA256

    bec0a2fe9590afbf0a4c5fd15568c59dddd36978769900624c67785e9b0e4363

  • SHA512

    5b1cdbaa9c8a01b6157d414fed83dc5e19eec225fa2cb911c5dfdcdd245e0bd81ab8d042eb70a96a483a88e053a92c8a2914faf6f5c0b9b2b45f3cc620263083

Score
10/10
massloggercollectionevasionransomwarespywarestealer

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Local\Temp\3B8E3C2477\Log.txt

Family

masslogger

Ransom Note
################################################################# MassLogger v1.3.7.1 ################################################################# ### Logger Details ### User Name: Admin IP: 154.61.71.50 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: 5/21/2022 3:10:21 PM MassLogger Started: 5/21/2022 3:10:05 PM Interval: 9 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\sampl request.exe MassLogger Melt: false MassLogger Exit after delivery: false As Administrator: True Processes:

Signatures

  • MassLogger

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

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

    Detects a log file produced by MassLogger.

  • Modifies visibility of file extensions in Explorer 2 TTPs
    evasion
  • 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.

  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

    persistence
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\sampl request.exe
    "C:\Users\Admin\AppData\Local\Temp\sampl request.exe"
    1⤵
    • Checks computer location settings
    • Accesses Microsoft Outlook profiles
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    • outlook_office_path
    • outlook_win_path
    PID:1096
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\DAkYduing" /XML "C:\Users\Admin\AppData\Local\Temp\tmp8CE5.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:1792

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1
T1053

Persistence

Hidden Files and Directories

1
T1158

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Defense Evasion

Hidden Files and Directories

1
T1158

Modify Registry

1
T1112

Credential Access

Credentials in Files

1
T1081

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Lateral Movement

Collection

Data from Local System

1
T1005

Email Collection

1
T1114

Exfiltration

Command and Control

Impact

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmp8CE5.tmp
    Filesize

    1KB

    MD5

    01afb87b56b1b1ca69b3d84d8ea5a1ae

    SHA1

    094062b8532d71a24f0cb8bf7144e893413595f6

    SHA256

    4b229285c7b58d0a9f5909362070d5b44c16efe7d50d0bcca31652fa66d7c885

    SHA512

    e5fa7edd692dcd46f799954403ca006ebb7e8e596121c3cdc5f6df13155332cb52af7349d4804c7a67cca5cf0e9dd71fd431684321d94a9caf1b18b6d9a6be09

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  • memory/1096-54-0x0000000000AB0000-0x0000000000B92000-memory.dmp
    Filesize

    904KB

    Download
  • memory/1096-55-0x00000000047B0000-0x000000000489C000-memory.dmp
    Filesize

    944KB

    Download
  • memory/1096-56-0x0000000000310000-0x0000000000318000-memory.dmp
    Filesize

    32KB

    Download
  • memory/1096-57-0x00000000076D0000-0x0000000007780000-memory.dmp
    Filesize

    704KB

    Download
  • memory/1096-60-0x0000000007BD0000-0x0000000007C78000-memory.dmp
    Filesize

    672KB

    Download
  • memory/1096-61-0x0000000000A70000-0x0000000000AB4000-memory.dmp
    Filesize

    272KB

    Download
  • memory/1096-62-0x00000000048B5000-0x00000000048C6000-memory.dmp
    Filesize

    68KB

    Download
  • memory/1792-58-0x0000000000000000-mapping.dmp
    Download