Analysis

  • max time kernel
    82s
  • max time network
    114s
  • platform
    windows7_x64
  • resource
    win7v20210410
  • submitted
    09-08-2021 15:45

General

  • Target

    1283YT348130Et-21 -10000,00-EUR-SWIFT MESAJI.exe

  • Size

    922KB

  • MD5

    a6c09767f7b9b02156bd3e4f67764e79

  • SHA1

    5aa1d0515cd9ca1802c872cd8a9354b65cef7463

  • SHA256

    2183dd8a07c328ff41cf8fedc06bdc9ec8166d6c11691cb6d379899318d8e555

  • SHA512

    5f7072604303b4bea39a1c4751e09eb8399d9a10984ba2ddb699680145c952fb71d180e3e56135d30aa9639e9f5ff3899a3e58a2b7ab5d0ec38b88f94f17aa50

Malware Config

Signatures

  • A310logger

    A310 Logger is a .NET stealer/logger targeting passwords from browsers and email clients.

  • A310logger Executable 3 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Reads local data of messenger clients 2 TTPs

    Infostealers often target stored data of messaging applications, which can include saved credentials and account information.

  • Reads user/profile data of web browsers 2 TTPs

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

  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • 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.

  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\1283YT348130Et-21 -10000,00-EUR-SWIFT MESAJI.exe
    "C:\Users\Admin\AppData\Local\Temp\1283YT348130Et-21 -10000,00-EUR-SWIFT MESAJI.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:736
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\LEjGKtEzH" /XML "C:\Users\Admin\AppData\Local\Temp\tmp7197.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:1536
    • C:\Users\Admin\AppData\Local\Temp\1283YT348130Et-21 -10000,00-EUR-SWIFT MESAJI.exe
      "C:\Users\Admin\AppData\Local\Temp\1283YT348130Et-21 -10000,00-EUR-SWIFT MESAJI.exe"
      2⤵
      • Loads dropped DLL
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1004
      • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\NET4\Fox.exe
        C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\NET4\Fox.exe
        3⤵
        • Executes dropped EXE
        PID:812

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmp7197.tmp

    MD5

    514e627efcdbc8ded0338e191a150282

    SHA1

    f7ff1db3c70736d5247a429f952f8fc2222e223a

    SHA256

    f42d5aaf0381387e1f4b0682d804638bd7afff18a4b7c37fdcc4be2b5d7b5507

    SHA512

    e22d543daf355a062cd946618e9cf26aa7470ca80b32a81ec7ecaff61d538cce1ff2d8779d49788a0872c6edcd8924c4a9be31e1ab6a4dab2fbf092e41aca158

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\NET4\Fox.exe

    MD5

    91b41651e6e9ab352805c6d35a297d08

    SHA1

    11b8eaa7b7941461bc952b11ec3f07d25dcd1c2e

    SHA256

    0872abe29cc9231cdded3a44e02a7ea17f09cf2ac2bdbd7077065858829c3723

    SHA512

    b0b0d73f6ac7b6e9b39db0fa58931873143f6559c3b8d3db2d82d453045f75da94f3236b6c6c5200b52af6cacc038565eb2e9c6a834608dac0b0e8bb45b1e892

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\NET4\Fox.exe

    MD5

    91b41651e6e9ab352805c6d35a297d08

    SHA1

    11b8eaa7b7941461bc952b11ec3f07d25dcd1c2e

    SHA256

    0872abe29cc9231cdded3a44e02a7ea17f09cf2ac2bdbd7077065858829c3723

    SHA512

    b0b0d73f6ac7b6e9b39db0fa58931873143f6559c3b8d3db2d82d453045f75da94f3236b6c6c5200b52af6cacc038565eb2e9c6a834608dac0b0e8bb45b1e892

  • \Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\NET4\Fox.exe

    MD5

    91b41651e6e9ab352805c6d35a297d08

    SHA1

    11b8eaa7b7941461bc952b11ec3f07d25dcd1c2e

    SHA256

    0872abe29cc9231cdded3a44e02a7ea17f09cf2ac2bdbd7077065858829c3723

    SHA512

    b0b0d73f6ac7b6e9b39db0fa58931873143f6559c3b8d3db2d82d453045f75da94f3236b6c6c5200b52af6cacc038565eb2e9c6a834608dac0b0e8bb45b1e892

  • memory/736-62-0x0000000004E00000-0x0000000004E01000-memory.dmp

    Filesize

    4KB

  • memory/736-63-0x00000000003C0000-0x00000000003D1000-memory.dmp

    Filesize

    68KB

  • memory/736-64-0x0000000008030000-0x00000000080F8000-memory.dmp

    Filesize

    800KB

  • memory/736-65-0x0000000000630000-0x000000000068D000-memory.dmp

    Filesize

    372KB

  • memory/736-60-0x00000000002B0000-0x00000000002B1000-memory.dmp

    Filesize

    4KB

  • memory/812-75-0x0000000000000000-mapping.dmp

  • memory/812-78-0x0000000000E40000-0x0000000000E41000-memory.dmp

    Filesize

    4KB

  • memory/812-80-0x000000001B410000-0x000000001B412000-memory.dmp

    Filesize

    8KB

  • memory/1004-73-0x0000000000400000-0x000000000045B000-memory.dmp

    Filesize

    364KB

  • memory/1004-72-0x00000000757E1000-0x00000000757E3000-memory.dmp

    Filesize

    8KB

  • memory/1004-68-0x0000000000400000-0x000000000045B000-memory.dmp

    Filesize

    364KB

  • memory/1004-69-0x0000000000401E10-mapping.dmp

  • memory/1536-66-0x0000000000000000-mapping.dmp