Overview

overview

10

Static

static

Reff # PO_...09.exe

windows7_x64

10

Reff # PO_...09.exe

windows10-2004_x64

10

Analysis

  • max time kernel
    63s
  • max time network
    47s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    21-05-2022 01:23

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General

  • Target

    Reff # PO_67574 SN-3945 187809.exe

  • Size

    519KB

  • MD5

    2937291b0e76f9710529d315a15b2ead

  • SHA1

    4ed50482753f2f5001221c51b291247cd4cd9e58

  • SHA256

    52076bdaeca2aec859341f506d295ab541af5f1454be18dbf869694b613395c7

  • SHA512

    160197e2ef76d7628575a053b59fe92b97e002dae60fb19acbbd971b84395487d622d83c51ec2946e37af04596a27dd0e76e9389cbc60abcd0a745a4ff2f5938

Score
10/10
agentteslacollectioncoreentitykeyloggerrezer0spywarestealertrojan

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:     smtp
  • Host:
    smtp.yandex.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    Starboy@22

Signatures

  • AgentTesla

    Agent Tesla is a remote access tool (RAT) written in visual basic.

    keyloggertrojanstealerspywareagenttesla
  • CoreEntity .NET Packer 1 IoCs

    A .NET packer called CoreEntity where it has embedded the payload as a BitMap object which is later decrypted.

    coreentity
  • AgentTesla Payload 6 IoCs
  • ReZer0 packer 1 IoCs

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

    rezer0
  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

    spywarestealer
  • Reads user/profile data of local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

    spywarestealer
  • 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 3 IoCs
    collection
  • Suspicious use of SetThreadContext 1 IoCs
  • 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: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 13 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Reff # PO_67574 SN-3945 187809.exe
    "C:\Users\Admin\AppData\Local\Temp\Reff # PO_67574 SN-3945 187809.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1068
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\SnkbxiTB" /XML "C:\Users\Admin\AppData\Local\Temp\tmpF76A.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:1100
    • C:\Users\Admin\AppData\Local\Temp\Reff # PO_67574 SN-3945 187809.exe
      "{path}"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • outlook_office_path
      • outlook_win_path
      PID:1708

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1
T1053

Persistence

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Defense Evasion

Credential Access

Credentials in Files

3
T1081

Discovery

System Information Discovery

1
T1082

Lateral Movement

Collection

Data from Local System

3
T1005

Email Collection

1
T1114

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmpF76A.tmp
    Filesize

    1KB

    MD5

    fd50f63cca50f2e2bf288aaae73d81d9

    SHA1

    48d48e671f5eb3ab075db6c76b78c7679fd1d60b

    SHA256

    7b2d134a086bace436f88b16e829016b513370f5dc2b40f2b4e4bc4992dd7cdf

    SHA512

    ca38d38b696cf9c4825d7246097305281e3283a81f4f5a37482672bf1893c50cec0da013b7744ce3cbdebccd8e167002123f9355e836b3f77e45433af9ade8e3

    Download Submit
  • memory/1068-54-0x0000000000CC0000-0x0000000000D48000-memory.dmp
    Filesize

    544KB

    Download
  • memory/1068-55-0x0000000075C51000-0x0000000075C53000-memory.dmp
    Filesize

    8KB

    Download
  • memory/1068-56-0x0000000000A10000-0x0000000000A18000-memory.dmp
    Filesize

    32KB

    Download
  • memory/1068-57-0x0000000004900000-0x0000000004956000-memory.dmp
    Filesize

    344KB

    Download
  • memory/1100-58-0x0000000000000000-mapping.dmp
    Download
  • memory/1708-60-0x0000000000400000-0x0000000000450000-memory.dmp
    Filesize

    320KB

    Download
  • memory/1708-61-0x0000000000400000-0x0000000000450000-memory.dmp
    Filesize

    320KB

    Download
  • memory/1708-63-0x0000000000400000-0x0000000000450000-memory.dmp
    Filesize

    320KB

    Download
  • memory/1708-64-0x0000000000400000-0x0000000000450000-memory.dmp
    Filesize

    320KB

    Download
  • memory/1708-65-0x0000000000400000-0x0000000000450000-memory.dmp
    Filesize

    320KB

    Download
  • memory/1708-66-0x000000000044A99E-mapping.dmp
    Download
  • memory/1708-68-0x0000000000400000-0x0000000000450000-memory.dmp
    Filesize

    320KB

    Download
  • memory/1708-70-0x0000000000400000-0x0000000000450000-memory.dmp
    Filesize

    320KB

    Download