Analysis

  • max time kernel
    65s
  • max time network
    135s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    01-12-2022 07:21

General

  • Target

    ba3e057e7a823f18733de4b2514968c0e4c95ee146e1235ef583c2ea28fc3b40.exe

  • Size

    1.1MB

  • MD5

    442987d5f387683241f0fc4451d6505f

  • SHA1

    763925e690da9c4ac9e354d3e974db30149bd9f5

  • SHA256

    ba3e057e7a823f18733de4b2514968c0e4c95ee146e1235ef583c2ea28fc3b40

  • SHA512

    b1e3c596d42116e7d014c76de1c868faf86f078a7d102549b84e715d5ac131bcbdbebcb1168e3e1318c7e0774010d50b7a35fa785d7b04f929e1efc1b9c9d641

  • SSDEEP

    24576:Vm9x+JQdTqQ4i8EbtPcFWO0j8ksr7Sk4Lg9eDBbt8dTqQ4iMW:6tTqQ4irPcFOjz67Sk4rVbteTqQ4iMW

Malware Config

Signatures

  • ISR Stealer

    ISR Stealer is a modified version of Hackhound Stealer written in visual basic.

  • ISR Stealer payload 5 IoCs
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 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 web browsers 2 TTPs

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

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

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

  • Modifies system certificate store 2 TTPs 4 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of SendNotifyMessage 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ba3e057e7a823f18733de4b2514968c0e4c95ee146e1235ef583c2ea28fc3b40.exe
    "C:\Users\Admin\AppData\Local\Temp\ba3e057e7a823f18733de4b2514968c0e4c95ee146e1235ef583c2ea28fc3b40.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1976
    • C:\Users\Admin\AppData\Local\Temp\svchost.exe
      C:\Users\Admin\AppData\Local\Temp\svchost.exe
      2⤵
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of SetWindowsHookEx
      PID:1316
    • C:\Users\Admin\AppData\Local\Temp\PlayMaxPayne3.exe
      "C:\Users\Admin\AppData\Local\Temp\PlayMaxPayne3.exe"
      2⤵
      • Executes dropped EXE
      • Modifies system certificate store
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:2008

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\PlayMaxPayne3.exe

    Filesize

    990KB

    MD5

    4ed741a5d519a63d9d91edae48cc9272

    SHA1

    eddc7167c07053a105fe0965df6dcad256012169

    SHA256

    0254cc537b52f42d425df86cec596924d79a8e98a4268e7492f4131952417d48

    SHA512

    cc76e67e9359f48c4c64f564e1d590c8e6bd9e0e00d351cf90c4e9560812b7a7d4b15bafb5a5cc7372644041dc4fe5d95520543b6d5ca9b1df4c4a25eabb2168

  • C:\Users\Admin\AppData\Local\Temp\PlayMaxPayne3.exe

    Filesize

    990KB

    MD5

    4ed741a5d519a63d9d91edae48cc9272

    SHA1

    eddc7167c07053a105fe0965df6dcad256012169

    SHA256

    0254cc537b52f42d425df86cec596924d79a8e98a4268e7492f4131952417d48

    SHA512

    cc76e67e9359f48c4c64f564e1d590c8e6bd9e0e00d351cf90c4e9560812b7a7d4b15bafb5a5cc7372644041dc4fe5d95520543b6d5ca9b1df4c4a25eabb2168

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

    Filesize

    31KB

    MD5

    ed797d8dc2c92401985d162e42ffa450

    SHA1

    0f02fc517c7facc4baefde4fe9467fb6488ebabe

    SHA256

    b746362010a101cb5931bc066f0f4d3fc740c02a68c1f37fc3c8e6c87fd7cb1e

    SHA512

    e831a6ff987f3ef29982da16afad06938b68eddd43c234ba88d1c96a1b5547f2284baf35cbb3a5bfd75e7f0445d14daa014e0ba00b4db72c67f83f0a314c80c2

  • \Users\Admin\AppData\Local\Temp\PlayMaxPayne3.exe

    Filesize

    990KB

    MD5

    4ed741a5d519a63d9d91edae48cc9272

    SHA1

    eddc7167c07053a105fe0965df6dcad256012169

    SHA256

    0254cc537b52f42d425df86cec596924d79a8e98a4268e7492f4131952417d48

    SHA512

    cc76e67e9359f48c4c64f564e1d590c8e6bd9e0e00d351cf90c4e9560812b7a7d4b15bafb5a5cc7372644041dc4fe5d95520543b6d5ca9b1df4c4a25eabb2168

  • \Users\Admin\AppData\Local\Temp\svchost.exe

    Filesize

    31KB

    MD5

    ed797d8dc2c92401985d162e42ffa450

    SHA1

    0f02fc517c7facc4baefde4fe9467fb6488ebabe

    SHA256

    b746362010a101cb5931bc066f0f4d3fc740c02a68c1f37fc3c8e6c87fd7cb1e

    SHA512

    e831a6ff987f3ef29982da16afad06938b68eddd43c234ba88d1c96a1b5547f2284baf35cbb3a5bfd75e7f0445d14daa014e0ba00b4db72c67f83f0a314c80c2

  • memory/1316-75-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/1316-57-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/1316-60-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/1316-58-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/1316-76-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/1316-61-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/1976-55-0x0000000074B10000-0x00000000750BB000-memory.dmp

    Filesize

    5.7MB

  • memory/1976-73-0x0000000074B10000-0x00000000750BB000-memory.dmp

    Filesize

    5.7MB

  • memory/1976-54-0x00000000762B1000-0x00000000762B3000-memory.dmp

    Filesize

    8KB

  • memory/2008-74-0x0000000074B10000-0x00000000750BB000-memory.dmp

    Filesize

    5.7MB

  • memory/2008-77-0x0000000000C26000-0x0000000000C37000-memory.dmp

    Filesize

    68KB

  • memory/2008-78-0x0000000074B10000-0x00000000750BB000-memory.dmp

    Filesize

    5.7MB