Analysis

  • max time kernel
    122s
  • max time network
    125s
  • platform
    windows7_x64
  • resource
    win7-20230712-en
  • resource tags

    arch:x64arch:x86image:win7-20230712-enlocale:en-usos:windows7-x64system
  • submitted
    21-07-2023 09:39

General

  • Target

    Payment_Confirmation_230721pdf.exe

  • Size

    53KB

  • MD5

    4feef1aae6a0fec7806c2c0fbbee297e

  • SHA1

    2be923d8dc05abe584621a4bff5c9178cf43777a

  • SHA256

    e03f7cbee9ba8443d200f1bcc47101185dcdc27b965b0ce9b650a0aae4c40492

  • SHA512

    44c8d14b4543909e5f1451f25330f8d7a9679d12b2eaefab2c21dd8cf1d41491d1e41b00230a4cf36b5be63ba1b9721ce8c4ee07d0f802b5c284c6c655661a31

  • SSDEEP

    768:qgyiRquYaRH/+MSlKphRUsSnDK3EaC8l2bP3SScNY8nfRqTuM+1+S:q1iRTYqNuKZUsgDK3EaqL36G8ETugS

Malware Config

Extracted

Family

purecrypter

C2

https://files.catbox.moe/730d8u.wav

Extracted

Family

agenttesla

C2

https://api.telegram.org/bot5866125639:AAHczhVa6KsnPdrAfpcJqJMrQ8ZeqF9Y-b0/

Signatures

  • AgentTesla

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

  • PureCrypter

    PureCrypter is a .NET malware loader first seen in early 2021.

  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

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

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

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Looks up external IP address via web service 2 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Suspicious use of SetThreadContext 1 IoCs
  • Modifies system certificate store 2 TTPs 6 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Payment_Confirmation_230721pdf.exe
    "C:\Users\Admin\AppData\Local\Temp\Payment_Confirmation_230721pdf.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • Modifies system certificate store
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2644
    • C:\Users\Admin\AppData\Local\Temp\Payment_Confirmation_230721pdf.exe
      C:\Users\Admin\AppData\Local\Temp\Payment_Confirmation_230721pdf.exe
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • outlook_office_path
      • outlook_win_path
      PID:1560

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

    Filesize

    344B

    MD5

    047abe39a6dacac505d4843d1a1e9642

    SHA1

    c5c4685c5aa4ebec5ed2dcd24d69f44d13c4436a

    SHA256

    7d1097331e4c0f7722ca133e7864a25c7a1e9eee5756f393bcda578979d89386

    SHA512

    ffb5043c8a3f956e700d54262076c7980ad2e79040bf558659a5f93d5d58c9f81e65e674fb406e72c4a7e29433a089f8526f285023ff273d77812245841275f7

  • C:\Users\Admin\AppData\Local\Temp\Cab80D5.tmp

    Filesize

    62KB

    MD5

    3ac860860707baaf32469fa7cc7c0192

    SHA1

    c33c2acdaba0e6fa41fd2f00f186804722477639

    SHA256

    d015145d551ecd14916270efad773bbc9fd57fad2228d2c24559f696c961d904

    SHA512

    d62ad2408c969a95550fb87efda50f988770ba5e39972041bf85924275baf156b8bec309ecc6409e5acdd37ec175dea40eff921ab58933b5b5b5d35a6147567c

  • C:\Users\Admin\AppData\Local\Temp\Tar83B6.tmp

    Filesize

    164KB

    MD5

    4ff65ad929cd9a367680e0e5b1c08166

    SHA1

    c0af0d4396bd1f15c45f39d3b849ba444233b3a2

    SHA256

    c8733c93cc5aaf5ca206d06af22ee8dbdec764fb5085019a6a9181feb9dfdee6

    SHA512

    f530dc0d024a5a3b8903ffaaa41b608a5ccdd6da4ba1949f2c2e55a9fca475fec5c8d2119b5763cabe7ef1c3788fb9dcac621869db51d65b1d83cfe404fb4c27

  • memory/1560-1471-0x0000000073820000-0x0000000073F0E000-memory.dmp

    Filesize

    6.9MB

  • memory/1560-1472-0x0000000000400000-0x0000000000430000-memory.dmp

    Filesize

    192KB

  • memory/1560-1475-0x0000000004C20000-0x0000000004C60000-memory.dmp

    Filesize

    256KB

  • memory/1560-1474-0x0000000073820000-0x0000000073F0E000-memory.dmp

    Filesize

    6.9MB

  • memory/1560-1473-0x0000000004C20000-0x0000000004C60000-memory.dmp

    Filesize

    256KB

  • memory/2644-157-0x0000000006100000-0x00000000061D6000-memory.dmp

    Filesize

    856KB

  • memory/2644-169-0x0000000006100000-0x00000000061D6000-memory.dmp

    Filesize

    856KB

  • memory/2644-128-0x0000000006100000-0x00000000061D6000-memory.dmp

    Filesize

    856KB

  • memory/2644-131-0x0000000006100000-0x00000000061D6000-memory.dmp

    Filesize

    856KB

  • memory/2644-133-0x0000000006100000-0x00000000061D6000-memory.dmp

    Filesize

    856KB

  • memory/2644-135-0x0000000006100000-0x00000000061D6000-memory.dmp

    Filesize

    856KB

  • memory/2644-137-0x0000000006100000-0x00000000061D6000-memory.dmp

    Filesize

    856KB

  • memory/2644-139-0x0000000006100000-0x00000000061D6000-memory.dmp

    Filesize

    856KB

  • memory/2644-141-0x0000000006100000-0x00000000061D6000-memory.dmp

    Filesize

    856KB

  • memory/2644-143-0x0000000006100000-0x00000000061D6000-memory.dmp

    Filesize

    856KB

  • memory/2644-145-0x0000000006100000-0x00000000061D6000-memory.dmp

    Filesize

    856KB

  • memory/2644-147-0x0000000006100000-0x00000000061D6000-memory.dmp

    Filesize

    856KB

  • memory/2644-149-0x0000000006100000-0x00000000061D6000-memory.dmp

    Filesize

    856KB

  • memory/2644-151-0x0000000006100000-0x00000000061D6000-memory.dmp

    Filesize

    856KB

  • memory/2644-153-0x0000000006100000-0x00000000061D6000-memory.dmp

    Filesize

    856KB

  • memory/2644-155-0x0000000006100000-0x00000000061D6000-memory.dmp

    Filesize

    856KB

  • memory/2644-127-0x0000000006100000-0x00000000061DC000-memory.dmp

    Filesize

    880KB

  • memory/2644-159-0x0000000006100000-0x00000000061D6000-memory.dmp

    Filesize

    856KB

  • memory/2644-161-0x0000000006100000-0x00000000061D6000-memory.dmp

    Filesize

    856KB

  • memory/2644-163-0x0000000006100000-0x00000000061D6000-memory.dmp

    Filesize

    856KB

  • memory/2644-167-0x0000000006100000-0x00000000061D6000-memory.dmp

    Filesize

    856KB

  • memory/2644-129-0x0000000006100000-0x00000000061D6000-memory.dmp

    Filesize

    856KB

  • memory/2644-165-0x0000000006100000-0x00000000061D6000-memory.dmp

    Filesize

    856KB

  • memory/2644-171-0x0000000006100000-0x00000000061D6000-memory.dmp

    Filesize

    856KB

  • memory/2644-173-0x0000000006100000-0x00000000061D6000-memory.dmp

    Filesize

    856KB

  • memory/2644-175-0x0000000006100000-0x00000000061D6000-memory.dmp

    Filesize

    856KB

  • memory/2644-177-0x0000000006100000-0x00000000061D6000-memory.dmp

    Filesize

    856KB

  • memory/2644-179-0x0000000006100000-0x00000000061D6000-memory.dmp

    Filesize

    856KB

  • memory/2644-181-0x0000000006100000-0x00000000061D6000-memory.dmp

    Filesize

    856KB

  • memory/2644-183-0x0000000006100000-0x00000000061D6000-memory.dmp

    Filesize

    856KB

  • memory/2644-185-0x0000000006100000-0x00000000061D6000-memory.dmp

    Filesize

    856KB

  • memory/2644-187-0x0000000006100000-0x00000000061D6000-memory.dmp

    Filesize

    856KB

  • memory/2644-189-0x0000000006100000-0x00000000061D6000-memory.dmp

    Filesize

    856KB

  • memory/2644-191-0x0000000006100000-0x00000000061D6000-memory.dmp

    Filesize

    856KB

  • memory/2644-585-0x0000000073F10000-0x00000000745FE000-memory.dmp

    Filesize

    6.9MB

  • memory/2644-1451-0x0000000001F10000-0x0000000001F11000-memory.dmp

    Filesize

    4KB

  • memory/2644-1452-0x0000000004A60000-0x0000000004AA2000-memory.dmp

    Filesize

    264KB

  • memory/2644-55-0x0000000004AA0000-0x0000000004AE0000-memory.dmp

    Filesize

    256KB

  • memory/2644-54-0x0000000073F10000-0x00000000745FE000-memory.dmp

    Filesize

    6.9MB

  • memory/2644-53-0x0000000000810000-0x0000000000824000-memory.dmp

    Filesize

    80KB

  • memory/2644-1453-0x0000000004C90000-0x0000000004CDC000-memory.dmp

    Filesize

    304KB

  • memory/2644-1467-0x0000000073F10000-0x00000000745FE000-memory.dmp

    Filesize

    6.9MB