Overview

overview

10

Static

static

Remittance...df.exe

windows7_x64

10

Remittance...df.exe

windows10-2004_x64

10

Analysis

  • max time kernel
    53s
  • max time network
    45s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    20-05-2022 22:26

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General

  • Target

    Remittance Advice_pdf.exe

  • Size

    489KB

  • MD5

    40cf989076b344351b1d067c13606bdc

  • SHA1

    9cabdefadc281a16534f33603f4984d50016df8f

  • SHA256

    21adf33a9b47f5feb7e4617d7f329b3a642f53121875bf28aabde66282a50524

  • SHA512

    b04f8d5cef67cc044943a8648053a01082047f7c33dfcb1e1023c9c37163796d78afb3b81a896f22ab7b7763ead4b6d6688ed8c579191cd724629b447593b902

Score
10/10
agentteslacollectionevasionkeyloggerspywarestealertrojan

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:     smtp
  • Host:
    smtp.ionos.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    temp20182019

Signatures

  • AgentTesla

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

    keyloggertrojanstealerspywareagenttesla
  • AgentTesla Payload 6 IoCs
  • Looks for VirtualBox Guest Additions in registry 2 TTPs
    evasion
  • Looks for VMWare Tools registry key 2 TTPs
    evasion
  • Checks BIOS information in registry 2 TTPs 2 IoCs

    BIOS information is often read in order to detect sandboxing environments.

  • 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
  • Maps connected drives based on registry 3 TTPs 2 IoCs

    Disk information is often read in order to detect sandboxing environments.

  • 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 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 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\Remittance Advice_pdf.exe
    "C:\Users\Admin\AppData\Local\Temp\Remittance Advice_pdf.exe"
    1⤵
    • Checks BIOS information in registry
    • Maps connected drives based on registry
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1880
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\lJrxijGhFJqIR" /XML "C:\Users\Admin\AppData\Local\Temp\tmpDB52.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:1960
    • C:\Users\Admin\AppData\Local\Temp\Remittance Advice_pdf.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:528

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

Virtualization/Sandbox Evasion

2
T1497

Credential Access

Credentials in Files

3
T1081

Discovery

Query Registry

4
T1012

Virtualization/Sandbox Evasion

2
T1497

System Information Discovery

3
T1082

Peripheral Device Discovery

1
T1120

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\tmpDB52.tmp
    Filesize

    1KB

    MD5

    199d6bc13e4862a8a50791dd4969ae6d

    SHA1

    1f260beb4a3fd967285a6c105c173448be80dae4

    SHA256

    6d65d6f68a24009e79f7fc0eea4baf60d9fe3d838a1a6b339f17e10727582fed

    SHA512

    44f95e1ffce537e9c72e88fd59110cb2cb45750fcfb46f698156c93190d23d1e4a2c3d50854a4822da7af3412a3b5df524ec298648ae2c08b4de236537e925f0

    Download Submit
  • memory/528-64-0x0000000000400000-0x000000000044E000-memory.dmp
    Filesize

    312KB

    Download
  • memory/528-66-0x0000000000400000-0x000000000044E000-memory.dmp
    Filesize

    312KB

    Download
  • memory/528-71-0x0000000000400000-0x000000000044E000-memory.dmp
    Filesize

    312KB

    Download
  • memory/528-69-0x0000000000400000-0x000000000044E000-memory.dmp
    Filesize

    312KB

    Download
  • memory/528-67-0x0000000000449F0E-mapping.dmp
    Download
  • memory/528-65-0x0000000000400000-0x000000000044E000-memory.dmp
    Filesize

    312KB

    Download
  • memory/528-61-0x0000000000400000-0x000000000044E000-memory.dmp
    Filesize

    312KB

    Download
  • memory/528-62-0x0000000000400000-0x000000000044E000-memory.dmp
    Filesize

    312KB

    Download
  • memory/1880-54-0x00000000001D0000-0x0000000000250000-memory.dmp
    Filesize

    512KB

    Download
  • memory/1880-55-0x00000000755A1000-0x00000000755A3000-memory.dmp
    Filesize

    8KB

    Download
  • memory/1880-56-0x00000000002A0000-0x00000000002AA000-memory.dmp
    Filesize

    40KB

    Download
  • memory/1880-58-0x00000000004B0000-0x00000000004FE000-memory.dmp
    Filesize

    312KB

    Download
  • memory/1880-57-0x0000000001FC0000-0x0000000002028000-memory.dmp
    Filesize

    416KB

    Download
  • memory/1960-59-0x0000000000000000-mapping.dmp
    Download