Analysis

  • max time kernel
    118s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    26-09-2024 01:28

General

  • Target

    20183e553792ae6197e8c687be18a66f742c03f7a4f056104352c01b43832590N.exe

  • Size

    768KB

  • MD5

    709f31cce8fb596fb211ecb532ac3320

  • SHA1

    0b4fd56473ade74d74d3831fe4674188a0623971

  • SHA256

    20183e553792ae6197e8c687be18a66f742c03f7a4f056104352c01b43832590

  • SHA512

    65fef446f3bbb1b1047f2537021977573eeb6d854a753e6c479035880022eef6164ad42535239acf4145411d533f5692d37e939bec7eaeea25a92beadbbae436

  • SSDEEP

    6144:mgxilHZyojpSVOfkNvR/XwSFXHw5sKxGhjuZxerwfJcWVPwt+Verd1cIJYvvB:2lYkCRv5FX8sKxGhyyk6TcIJYvvB

Malware Config

Signatures

  • ISR Stealer

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

  • ISR Stealer payload 2 IoCs
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious behavior: EnumeratesProcesses 12 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\20183e553792ae6197e8c687be18a66f742c03f7a4f056104352c01b43832590N.exe
    "C:\Users\Admin\AppData\Local\Temp\20183e553792ae6197e8c687be18a66f742c03f7a4f056104352c01b43832590N.exe"
    1⤵
    • Loads dropped DLL
    • Adds Run key to start application
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2280
    • C:\Users\Admin\AppData\Roaming\app.exe
      "C:\Users\Admin\AppData\Roaming\app.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2392
      • C:\Users\Admin\AppData\Roaming\app.exe
        "C:\Users\Admin\AppData\Roaming\app.exe"
        3⤵
        • Executes dropped EXE
        PID:744

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    342B

    MD5

    3e44acdb6ecc946fdbf2a9dab6b59f1e

    SHA1

    081ac0eef63542a0ce2cfd1cd88d74cd07cd31c4

    SHA256

    9ca6995d5d6d0cc0e17f9f522894b9a8b428bebcb7bf947270094c9cae02d3ea

    SHA512

    1abc35e1e021fa5f16db7494424767a0e84864d1691474a69aa6540bc71d94f0a22bb59d447b651fe592c1ba0481e1b4c5c57db29526d433f066d6d40bc4f2d6

  • C:\Users\Admin\AppData\Local\Temp\Cab7F1F.tmp

    Filesize

    70KB

    MD5

    49aebf8cbd62d92ac215b2923fb1b9f5

    SHA1

    1723be06719828dda65ad804298d0431f6aff976

    SHA256

    b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

    SHA512

    bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

  • \Users\Admin\AppData\Roaming\app.exe

    Filesize

    773KB

    MD5

    c872d3a5959bdb496b02c593429ebf6b

    SHA1

    4e10f4060f0b18bea7a2ff36320b4327b570086e

    SHA256

    d823d110171c8f487e289802aaeb0a646f5d62c97fec91a276b2392abae75e9c

    SHA512

    563afbad87ef10fd11f0ab8cf9a5baaeabb5777f41a88edd29bfa9368d172777c71834eb04e8e2c4e92f42f895796c190c13a74083ad4e3830863700843f0eb6

  • memory/744-47-0x0000000000150000-0x0000000000192000-memory.dmp

    Filesize

    264KB

  • memory/744-48-0x0000000000150000-0x0000000000192000-memory.dmp

    Filesize

    264KB

  • memory/2280-1-0x00000000744E0000-0x0000000074A8B000-memory.dmp

    Filesize

    5.7MB

  • memory/2280-2-0x00000000744E0000-0x0000000074A8B000-memory.dmp

    Filesize

    5.7MB

  • memory/2280-12-0x00000000744E0000-0x0000000074A8B000-memory.dmp

    Filesize

    5.7MB

  • memory/2280-13-0x00000000744E0000-0x0000000074A8B000-memory.dmp

    Filesize

    5.7MB

  • memory/2280-14-0x00000000744E0000-0x0000000074A8B000-memory.dmp

    Filesize

    5.7MB

  • memory/2280-0-0x00000000744E1000-0x00000000744E2000-memory.dmp

    Filesize

    4KB

  • memory/2280-32-0x00000000744E0000-0x0000000074A8B000-memory.dmp

    Filesize

    5.7MB

  • memory/2392-34-0x00000000744E0000-0x0000000074A8B000-memory.dmp

    Filesize

    5.7MB

  • memory/2392-44-0x00000000744E0000-0x0000000074A8B000-memory.dmp

    Filesize

    5.7MB

  • memory/2392-45-0x00000000744E0000-0x0000000074A8B000-memory.dmp

    Filesize

    5.7MB

  • memory/2392-43-0x00000000744E0000-0x0000000074A8B000-memory.dmp

    Filesize

    5.7MB

  • memory/2392-33-0x00000000744E0000-0x0000000074A8B000-memory.dmp

    Filesize

    5.7MB

  • memory/2392-53-0x00000000744E0000-0x0000000074A8B000-memory.dmp

    Filesize

    5.7MB