Analysis

  • max time kernel
    141s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-20230712-en
  • resource tags

    arch:x64arch:x86image:win7-20230712-enlocale:en-usos:windows7-x64system
  • submitted
    18-07-2023 06:36

General

  • Target

    way_bill_dhl_inv_bl_shipping_1707202300000000000000000000000000.exe

  • Size

    278KB

  • MD5

    2f4193ff4326d69ddaef834f0dc2e392

  • SHA1

    f55b54fbae11b6b0b8b780c5f5fad47695f0d0e2

  • SHA256

    f0fa77d698c8090d73a9c8af84fcfd63418bca7997367e410a15958b80c940bf

  • SHA512

    0d30580666fe153bf29e9a02b4964a4d9dfaf866641167f8a9bcd69449e349a6b10d9af31f120680eefe5308884eadbeedb16657439b376829cc772a4a482fdc

  • SSDEEP

    6144:FYa6fQVAyPG9xMy89AiSc/4m00WIhN0Hvr4aKQmkDVz/dmPRJEWzxb:FYsAyP2PaSG00daKnkDVDwPRuy

Malware Config

Extracted

Family

agenttesla

C2

https://api.telegram.org/bot5672966801:AAGkdauVLuRijg4BBwGbZ-5sO2ggBTSZUHE/

Signatures

  • AgentTesla

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

  • Loads dropped DLL 1 IoCs
  • 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
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 5 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\way_bill_dhl_inv_bl_shipping_1707202300000000000000000000000000.exe
    "C:\Users\Admin\AppData\Local\Temp\way_bill_dhl_inv_bl_shipping_1707202300000000000000000000000000.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of SetThreadContext
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:2444
    • C:\Users\Admin\AppData\Local\Temp\way_bill_dhl_inv_bl_shipping_1707202300000000000000000000000000.exe
      "C:\Users\Admin\AppData\Local\Temp\way_bill_dhl_inv_bl_shipping_1707202300000000000000000000000000.exe"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:2164

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • \Users\Admin\AppData\Local\Temp\nso7E56.tmp\mepsr.dll

    Filesize

    11KB

    MD5

    929d1e193a2f990acdd4fd452a291950

    SHA1

    83c9f60377366201d5887e1f2e2e7b51855cf2ff

    SHA256

    c1ef97cc41b6e197b13a3de5a0f1c7c52f72ba99e9deaa0a698c3387ab32c916

    SHA512

    ec6a432436593fbd0d4e398b8a356b38e8ff15d5aa2e52d69e548ea412f372350645d2a17f54f362b9328d9376c7c5a629d491b090160e88ed4faf92c8167f8d

  • memory/2164-61-0x0000000000400000-0x0000000000441000-memory.dmp

    Filesize

    260KB

  • memory/2164-63-0x0000000000400000-0x0000000000441000-memory.dmp

    Filesize

    260KB

  • memory/2164-64-0x0000000000400000-0x0000000000441000-memory.dmp

    Filesize

    260KB

  • memory/2164-65-0x0000000004420000-0x0000000004450000-memory.dmp

    Filesize

    192KB

  • memory/2164-66-0x0000000074780000-0x0000000074E6E000-memory.dmp

    Filesize

    6.9MB

  • memory/2164-67-0x0000000004590000-0x00000000045D0000-memory.dmp

    Filesize

    256KB

  • memory/2164-68-0x0000000004590000-0x00000000045D0000-memory.dmp

    Filesize

    256KB

  • memory/2164-69-0x0000000074780000-0x0000000074E6E000-memory.dmp

    Filesize

    6.9MB

  • memory/2164-70-0x0000000000400000-0x0000000000441000-memory.dmp

    Filesize

    260KB

  • memory/2444-60-0x0000000074A50000-0x0000000074A56000-memory.dmp

    Filesize

    24KB