Analysis

  • max time kernel
    108s
  • max time network
    129s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03-04-2023 05:56

General

  • Target

    PO 0051-23.exe

  • Size

    318KB

  • MD5

    76d08c9a795cb286eb92d8ab41d1bff5

  • SHA1

    b00f94fc957f25fcb4fdccb8aad1d679247cde04

  • SHA256

    0e4ea6322dba2d469a0e405188c76f6cd9332e193071048192621abf85bf7cdc

  • SHA512

    2fb51728fcaca60b38094278e9e9571bc6e4ddd33226614dd9eedd066d7a551fc714a2f8d336ccadf8f8ca690b56339e85b089efdfe315b26f7728e84da23002

  • SSDEEP

    6144:PYa63sAnyhbptQUF310y/LGcCn75IDouSHwoX1TzseW6:PYlFn2tFFF0y/LS7ohSHwoX1/seW6

Malware Config

Signatures

  • AgentTesla

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

  • Executes dropped EXE 2 IoCs
  • 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
  • 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
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 7 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\PO 0051-23.exe
    "C:\Users\Admin\AppData\Local\Temp\PO 0051-23.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1668
    • C:\Users\Admin\AppData\Local\Temp\omhrw.exe
      "C:\Users\Admin\AppData\Local\Temp\omhrw.exe" C:\Users\Admin\AppData\Local\Temp\uceqap.bxh
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of WriteProcessMemory
      PID:3520
      • C:\Users\Admin\AppData\Local\Temp\omhrw.exe
        "C:\Users\Admin\AppData\Local\Temp\omhrw.exe"
        3⤵
        • Executes dropped EXE
        • Accesses Microsoft Outlook profiles
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        • outlook_office_path
        • outlook_win_path
        PID:1644

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\omhrw.exe

    Filesize

    108KB

    MD5

    7c1528ff96a4e33fba3f401186a9c885

    SHA1

    83fd43831c6afa49adb54793e8ea440d66d30250

    SHA256

    b36388b29d54b1aa24fd414820edac458b28bcabc4036d10064c6754cb94560e

    SHA512

    d54d2ddf479eedaeca856df99d0c111bc06a69a467c5aff5bda951904566d2203d0cddcb69fbb7a49f2c24e1f82f85b80c1831492922c4cc8366e797866c8394

  • C:\Users\Admin\AppData\Local\Temp\omhrw.exe

    Filesize

    108KB

    MD5

    7c1528ff96a4e33fba3f401186a9c885

    SHA1

    83fd43831c6afa49adb54793e8ea440d66d30250

    SHA256

    b36388b29d54b1aa24fd414820edac458b28bcabc4036d10064c6754cb94560e

    SHA512

    d54d2ddf479eedaeca856df99d0c111bc06a69a467c5aff5bda951904566d2203d0cddcb69fbb7a49f2c24e1f82f85b80c1831492922c4cc8366e797866c8394

  • C:\Users\Admin\AppData\Local\Temp\omhrw.exe

    Filesize

    108KB

    MD5

    7c1528ff96a4e33fba3f401186a9c885

    SHA1

    83fd43831c6afa49adb54793e8ea440d66d30250

    SHA256

    b36388b29d54b1aa24fd414820edac458b28bcabc4036d10064c6754cb94560e

    SHA512

    d54d2ddf479eedaeca856df99d0c111bc06a69a467c5aff5bda951904566d2203d0cddcb69fbb7a49f2c24e1f82f85b80c1831492922c4cc8366e797866c8394

  • C:\Users\Admin\AppData\Local\Temp\rqmpn.vew

    Filesize

    262KB

    MD5

    02d0659ec77eca2c92bd1294d93c1eed

    SHA1

    cfb7e814e9f18879aa77809f43a15120a681e9cb

    SHA256

    9f425158aadce203ae04418efbe68a611fb0ec2aa0c937b3f2cdc6d3ae051ada

    SHA512

    3bd84272baefcceec80218cbfe3321d13c7f276c2af7391e0cd457deb61bf76b4bf465f97726b195f4d9d44293e71f78206242937faa15ac2b4a921f49388803

  • C:\Users\Admin\AppData\Local\Temp\uceqap.bxh

    Filesize

    5KB

    MD5

    5385be9904edda97bbb87728125289a7

    SHA1

    0132c31f501081c8a45c044b91d2915bee538f15

    SHA256

    d1f81293d981c41ef85c9ab029a914435e57c6d7fb3bea89f01e924b3595182f

    SHA512

    b1494090a3e102c45825d3ce194027eeaae066ba0031313b12282e9a5ba8035b915a8ee82be2e4c573f7f302dda7e95463edbafa9ff730e41683ffd75f9638a1

  • memory/1644-150-0x00000000027C0000-0x00000000027D0000-memory.dmp

    Filesize

    64KB

  • memory/1644-152-0x0000000004F00000-0x0000000004F66000-memory.dmp

    Filesize

    408KB

  • memory/1644-145-0x0000000000400000-0x0000000000441000-memory.dmp

    Filesize

    260KB

  • memory/1644-142-0x0000000000400000-0x0000000000441000-memory.dmp

    Filesize

    260KB

  • memory/1644-147-0x0000000005400000-0x00000000059A4000-memory.dmp

    Filesize

    5.6MB

  • memory/1644-148-0x0000000000400000-0x0000000000441000-memory.dmp

    Filesize

    260KB

  • memory/1644-149-0x00000000027C0000-0x00000000027D0000-memory.dmp

    Filesize

    64KB

  • memory/1644-161-0x00000000027C0000-0x00000000027D0000-memory.dmp

    Filesize

    64KB

  • memory/1644-151-0x00000000027C0000-0x00000000027D0000-memory.dmp

    Filesize

    64KB

  • memory/1644-144-0x0000000000400000-0x0000000000441000-memory.dmp

    Filesize

    260KB

  • memory/1644-153-0x00000000027C0000-0x00000000027D0000-memory.dmp

    Filesize

    64KB

  • memory/1644-154-0x00000000066B0000-0x0000000006742000-memory.dmp

    Filesize

    584KB

  • memory/1644-155-0x00000000067B0000-0x00000000067BA000-memory.dmp

    Filesize

    40KB

  • memory/1644-156-0x0000000006930000-0x0000000006980000-memory.dmp

    Filesize

    320KB

  • memory/1644-157-0x0000000006C40000-0x0000000006E02000-memory.dmp

    Filesize

    1.8MB

  • memory/1644-158-0x00000000027C0000-0x00000000027D0000-memory.dmp

    Filesize

    64KB

  • memory/1644-159-0x00000000027C0000-0x00000000027D0000-memory.dmp

    Filesize

    64KB

  • memory/1644-160-0x00000000027C0000-0x00000000027D0000-memory.dmp

    Filesize

    64KB

  • memory/3520-140-0x00000000014F0000-0x00000000014F2000-memory.dmp

    Filesize

    8KB