Analysis

  • max time kernel
    168s
  • max time network
    35s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    22-11-2022 21:44

General

  • Target

    f8b5e7240a9c8c9b5d10a9b878c83d11d6c13d09cb542233385d07e965f60ea2.exe

  • Size

    1.9MB

  • MD5

    a03ec5f7b5555dba80056a94fa8b79ae

  • SHA1

    e503d2361fb95520c7c76d27a24923afe05ad943

  • SHA256

    f8b5e7240a9c8c9b5d10a9b878c83d11d6c13d09cb542233385d07e965f60ea2

  • SHA512

    e808bcb73b21a4012bdcf8c743fcb3544e74e3d05dbe960edd7ea9d35a0ef80310b01425553110aa45d757bc11573cc9651d30f7b711b107a412c20c07f8c5e1

  • SSDEEP

    49152:SQihcR44MZgLTfE1Il1MZCUXj5pbnyNN7pGSYun+TC+Tu:liwfE1e+Pz5ZyEt2+++C

Malware Config

Signatures

  • Modifies system executable filetype association 2 TTPs 1 IoCs
  • Neshta

    Malware from the neshta family is designed to infect itself into other files to spread itself and cause damage.

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 3 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Drops file in Program Files directory 64 IoCs
  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies registry class 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\f8b5e7240a9c8c9b5d10a9b878c83d11d6c13d09cb542233385d07e965f60ea2.exe
    "C:\Users\Admin\AppData\Local\Temp\f8b5e7240a9c8c9b5d10a9b878c83d11d6c13d09cb542233385d07e965f60ea2.exe"
    1⤵
    • Modifies system executable filetype association
    • Loads dropped DLL
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:2044
    • C:\Users\Admin\AppData\Local\Temp\3582-490\f8b5e7240a9c8c9b5d10a9b878c83d11d6c13d09cb542233385d07e965f60ea2.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\f8b5e7240a9c8c9b5d10a9b878c83d11d6c13d09cb542233385d07e965f60ea2.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:1944
      • C:\Program Files\Java\jre7\bin\javaw.exe
        "C:\Program Files\Java\jre7\bin\javaw.exe" -jar "C:\Users\Admin\AppData\Local\Temp\3582-490\f8b5e7240a9c8c9b5d10a9b878c83d11d6c13d09cb542233385d07e965f60ea2.exe"
        3⤵
          PID:628

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Persistence

    Change Default File Association

    1
    T1042

    Defense Evasion

    Modify Registry

    1
    T1112

    Credential Access

    Credentials in Files

    1
    T1081

    Discovery

    System Information Discovery

    1
    T1082

    Collection

    Data from Local System

    1
    T1005

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\3582-490\f8b5e7240a9c8c9b5d10a9b878c83d11d6c13d09cb542233385d07e965f60ea2.exe
      Filesize

      1.9MB

      MD5

      73d0b2465f8395f6b1edee887d20f4ab

      SHA1

      a01571b415b833d5223df1cdf332b17c63ea4cec

      SHA256

      20c600fb21e5ed52ab2e88a6b69a39d63b6f1d609694d499b070caf917cfb72a

      SHA512

      fa1344d905a8819c1fc9286f7bc9e2462257569cc70bd47dd78830204e7d4a17d026cd4cdffd5aa83d92090a0b362da97ecec6b9b414e8dd5830e57ccb298759

    • C:\Users\Admin\AppData\Local\Temp\3582-490\f8b5e7240a9c8c9b5d10a9b878c83d11d6c13d09cb542233385d07e965f60ea2.exe
      Filesize

      1.9MB

      MD5

      73d0b2465f8395f6b1edee887d20f4ab

      SHA1

      a01571b415b833d5223df1cdf332b17c63ea4cec

      SHA256

      20c600fb21e5ed52ab2e88a6b69a39d63b6f1d609694d499b070caf917cfb72a

      SHA512

      fa1344d905a8819c1fc9286f7bc9e2462257569cc70bd47dd78830204e7d4a17d026cd4cdffd5aa83d92090a0b362da97ecec6b9b414e8dd5830e57ccb298759

    • \PROGRA~2\Adobe\READER~1.0\Reader\LOGTRA~1.EXE
      Filesize

      252KB

      MD5

      9e2b9928c89a9d0da1d3e8f4bd96afa7

      SHA1

      ec66cda99f44b62470c6930e5afda061579cde35

      SHA256

      8899b4ed3446b7d55b54defbc1acb7c5392a4b3bc8ec2cdc7c31171708965043

      SHA512

      2ca5ad1d0e12a8049de885b90b7f56fe77c868e0d6dae4ec4b6f3bc0bf7b2e73295cc9b1328c2b45357ffb0d7804622ab3f91a56140b098e93b691032d508156

    • \Users\Admin\AppData\Local\Temp\3582-490\f8b5e7240a9c8c9b5d10a9b878c83d11d6c13d09cb542233385d07e965f60ea2.exe
      Filesize

      1.9MB

      MD5

      73d0b2465f8395f6b1edee887d20f4ab

      SHA1

      a01571b415b833d5223df1cdf332b17c63ea4cec

      SHA256

      20c600fb21e5ed52ab2e88a6b69a39d63b6f1d609694d499b070caf917cfb72a

      SHA512

      fa1344d905a8819c1fc9286f7bc9e2462257569cc70bd47dd78830204e7d4a17d026cd4cdffd5aa83d92090a0b362da97ecec6b9b414e8dd5830e57ccb298759

    • \Users\Admin\AppData\Local\Temp\3582-490\f8b5e7240a9c8c9b5d10a9b878c83d11d6c13d09cb542233385d07e965f60ea2.exe
      Filesize

      1.9MB

      MD5

      73d0b2465f8395f6b1edee887d20f4ab

      SHA1

      a01571b415b833d5223df1cdf332b17c63ea4cec

      SHA256

      20c600fb21e5ed52ab2e88a6b69a39d63b6f1d609694d499b070caf917cfb72a

      SHA512

      fa1344d905a8819c1fc9286f7bc9e2462257569cc70bd47dd78830204e7d4a17d026cd4cdffd5aa83d92090a0b362da97ecec6b9b414e8dd5830e57ccb298759

    • memory/628-60-0x0000000000000000-mapping.dmp
    • memory/628-61-0x000007FEFB6F1000-0x000007FEFB6F3000-memory.dmp
      Filesize

      8KB

    • memory/1944-57-0x0000000000000000-mapping.dmp
    • memory/2044-54-0x0000000075671000-0x0000000075673000-memory.dmp
      Filesize

      8KB