Overview

overview

10

Static

static

Remittance...df.exe

windows7_x64

10

Remittance...df.exe

windows10-2004_x64

10

Analysis

  • max time kernel
    127s
  • max time network
    158s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-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

Credentials

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

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 1 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.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • 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 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 11 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
    • Checks computer location settings
    • Maps connected drives based on registry
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1728
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\lJrxijGhFJqIR" /XML "C:\Users\Admin\AppData\Local\Temp\tmp34CB.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:3660
    • 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:540

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

5
T1012

Virtualization/Sandbox Evasion

2
T1497

System Information Discovery

4
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\Microsoft\CLR_v4.0_32\UsageLogs\Remittance Advice_pdf.exe.log
    Filesize

    1KB

    MD5

    e08f822522c617a40840c62e4b0fb45e

    SHA1

    ae516dca4da5234be6676d3f234c19ec55725be7

    SHA256

    bd9d5e9f7fe6fcff17d873555d4077d15f7d6cdda1183e7f7d278b735ffe1fd7

    SHA512

    894a7fb7bbc18ac6ba13378f58a7db80ad00d6080be9a66b01cae8e23e41d9d2d4cd53c1e20669356b73590c8a3ebfda4bdda3258f81240db56c4a81b7313fe4

    Download Submit
  • C:\Users\Admin\AppData\Local\Temp\tmp34CB.tmp
    Filesize

    1KB

    MD5

    b3b603a2eb10cf6579e020db03b05835

    SHA1

    44f2883c52516ee951969eafdb3ac5e184b749e9

    SHA256

    706355d67af1a6b3d381312f63dd1b521fa65e6b851e8f264b0e37627677355a

    SHA512

    7a8a7bfc39b81a161f120e3454e30850ca0fccf069915bc778110fc25d63c20719ed1d0d4d64cdd82be1b0e07402d3dbe8e9be119fafb58ac8d3edc87fb2db7b

    Download Submit
  • memory/540-138-0x0000000000000000-mapping.dmp
    Download
  • memory/540-139-0x0000000000400000-0x000000000044E000-memory.dmp
    Filesize

    312KB

    Download
  • memory/540-141-0x00000000064C0000-0x0000000006510000-memory.dmp
    Filesize

    320KB

    Download
  • memory/1728-130-0x0000000000C00000-0x0000000000C80000-memory.dmp
    Filesize

    512KB

    Download
  • memory/1728-131-0x0000000008020000-0x00000000085C4000-memory.dmp
    Filesize

    5.6MB

    Download
  • memory/1728-132-0x0000000007B10000-0x0000000007BA2000-memory.dmp
    Filesize

    584KB

    Download
  • memory/1728-133-0x0000000007AF0000-0x0000000007AFA000-memory.dmp
    Filesize

    40KB

    Download
  • memory/1728-134-0x0000000007E40000-0x0000000007EDC000-memory.dmp
    Filesize

    624KB

    Download
  • memory/1728-135-0x000000000F120000-0x000000000F186000-memory.dmp
    Filesize

    408KB

    Download
  • memory/3660-136-0x0000000000000000-mapping.dmp
    Download