Overview

overview

10

Static

static

9

20200522.exe

windows7_x64

10

20200522.exe

windows10-2004_x64

10

Analysis

  • max time kernel
    136s
  • max time network
    156s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    21-05-2022 01:21

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General

  • Target

    20200522.exe

  • Size

    609KB

  • MD5

    0b2e69a9195cd4f0aa610bcf0157e036

  • SHA1

    c5d464f8f45234c967ad190f245391fca50addb2

  • SHA256

    9c1aaf3c45fa0ef5dedb8d4c4eb369351813576318f866f6c0985ba072dd3494

  • SHA512

    af52dba0f00232d5f348fdde3f3d4ce7aa264fb08d001fc3607327a452247df84fa6c2fb0c4b6a04fe791e1517d97d5f7a8d5d3ee7b50c996c2aa707744c6a1b

Score
10/10
agentteslacollectionevasionkeyloggerspywarestealertrojan

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:     smtp
  • Host:
    mail.mail15.cp247.net
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    Mm8182

Signatures

  • AgentTesla

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

    keyloggertrojanstealerspywareagenttesla
  • AgentTesla Payload 1 IoCs
  • CoreCCC Packer 1 IoCs

    Detects CoreCCC packer used to load .NET malware.

  • Looks for VirtualBox Guest Additions in registry 2 TTPs
    evasion
  • Disables RegEdit via registry modification
    evasion
  • Disables Task Manager via registry modification
    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
  • Modifies registry key 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\20200522.exe
    "C:\Users\Admin\AppData\Local\Temp\20200522.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:2116
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\aqojsQwEorQJQ" /XML "C:\Users\Admin\AppData\Local\Temp\tmpC400.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:3736
    • C:\Users\Admin\AppData\Local\Temp\20200522.exe
      "{path}"
      2⤵
        PID:3612
      • C:\Users\Admin\AppData\Local\Temp\20200522.exe
        "{path}"
        2⤵
        • Accesses Microsoft Outlook profiles
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        • outlook_office_path
        • outlook_win_path
        PID:2212
        • C:\Windows\SysWOW64\REG.exe
          REG add HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System /v DisableTaskMgr /t REG_DWORD /d 1 /f
          3⤵
          • Modifies registry key
          PID:4924

    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

    Modify Registry

    1
    T1112

    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\20200522.exe.log
      Filesize

      1KB

      MD5

      e08f822522c617a40840c62e4b0fb45e

      SHA1

      ae516dca4da5234be6676d3f234c19ec55725be7

      SHA256

      bd9d5e9f7fe6fcff17d873555d4077d15f7d6cdda1183e7f7d278b735ffe1fd7

      SHA512

      894a7fb7bbc18ac6ba13378f58a7db80ad00d6080be9a66b01cae8e23e41d9d2d4cd53c1e20669356b73590c8a3ebfda4bdda3258f81240db56c4a81b7313fe4

      Download Submit
    • C:\Users\Admin\AppData\Local\Temp\tmpC400.tmp
      Filesize

      1KB

      MD5

      0db3964b78f5b290c25fe63a3e1c1a11

      SHA1

      f9a72bfdf8666211bdeb4f1c49da6536d2fbd61c

      SHA256

      b00134d58e7765b9038cafbda1df7e39004a27f436b177253580403076fd123d

      SHA512

      62ce53ef5f0c7661219fdea494a7300f2393deeacacca152ed66b907c419f688d6867001c91d6e17d0e16c9fe4a395d357e9e02d6a9806ee0926367f7035bee2

      Download Submit
    • memory/2116-130-0x0000000000690000-0x000000000072E000-memory.dmp
      Filesize

      632KB

      Download
    • memory/2116-131-0x00000000054A0000-0x0000000005A44000-memory.dmp
      Filesize

      5.6MB

      Download
    • memory/2116-132-0x0000000004F90000-0x0000000005022000-memory.dmp
      Filesize

      584KB

      Download
    • memory/2116-133-0x0000000005130000-0x000000000513A000-memory.dmp
      Filesize

      40KB

      Download
    • memory/2116-134-0x0000000008720000-0x00000000087BC000-memory.dmp
      Filesize

      624KB

      Download
    • memory/2116-135-0x00000000089D0000-0x0000000008A36000-memory.dmp
      Filesize

      408KB

      Download
    • memory/2212-139-0x0000000000000000-mapping.dmp
      Download
    • memory/2212-140-0x0000000000400000-0x0000000000450000-memory.dmp
      Filesize

      320KB

      Download
    • memory/2212-143-0x0000000006320000-0x0000000006370000-memory.dmp
      Filesize

      320KB

      Download
    • memory/3612-138-0x0000000000000000-mapping.dmp
      Download
    • memory/3736-136-0x0000000000000000-mapping.dmp
      Download
    • memory/4924-142-0x0000000000000000-mapping.dmp
      Download