Analysis

  • max time kernel
    7s
  • max time network
    46s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    24-05-2022 16:48

General

  • Target

    5fbc1b2bd95bdfdd9f39c45bb22c00a797cf569998e3fa751d17c1341b35cd4b.exe

  • Size

    465KB

  • MD5

    edf84065e6dd8e15ad73589c3e415085

  • SHA1

    091635d29a153990ff2673724ad92052e9e63482

  • SHA256

    5fbc1b2bd95bdfdd9f39c45bb22c00a797cf569998e3fa751d17c1341b35cd4b

  • SHA512

    6cf4e0fd7c599f3354b993a2a41eae061f364937d1d1def7a24be5261838ec9aa6ea890c9c57c9b2d0450d1d8182651894a35a603cc99a9cbaba42a95d914aa3

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 2 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • 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.

  • Program crash 1 IoCs
  • Modifies registry class 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\5fbc1b2bd95bdfdd9f39c45bb22c00a797cf569998e3fa751d17c1341b35cd4b.exe
    "C:\Users\Admin\AppData\Local\Temp\5fbc1b2bd95bdfdd9f39c45bb22c00a797cf569998e3fa751d17c1341b35cd4b.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:1668
    • C:\Users\Admin\AppData\Local\Temp\3582-490\5fbc1b2bd95bdfdd9f39c45bb22c00a797cf569998e3fa751d17c1341b35cd4b.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\5fbc1b2bd95bdfdd9f39c45bb22c00a797cf569998e3fa751d17c1341b35cd4b.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:296
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 296 -s 1540
        3⤵
        • Program crash
        PID:1104

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\3582-490\5fbc1b2bd95bdfdd9f39c45bb22c00a797cf569998e3fa751d17c1341b35cd4b.exe

    Filesize

    333KB

    MD5

    7b2e949fcf7373b20651bfddc034398a

    SHA1

    48a95f76221b92e0f075e4b1f6b68f9eda39e026

    SHA256

    1758b9c51fbe1b6184dd5594cf1051909715104e2af947a291abb64ddb36193e

    SHA512

    e2eb238915c9eb20cc72d141b02d54aee4d79d35a8300991fb05e117864c69c562ba9cb381b2a58f5c7d51c14b17ba3304eae2d67bf41c083eefa3c58a13a58a

  • C:\Users\Admin\AppData\Local\Temp\3582-490\5fbc1b2bd95bdfdd9f39c45bb22c00a797cf569998e3fa751d17c1341b35cd4b.exe

    Filesize

    359KB

    MD5

    1b685ac487b26f5641445715e1ceed55

    SHA1

    c9704ebd6f1ffd55c289fb91cddae26013f20ea0

    SHA256

    f82e8ba8ebd6a729da3d306ad780b4e80c431611830cda9c8eabf51cdf42729a

    SHA512

    694467f1831d1d8aa65c2aa618e16c3de022b3e3b1915d4c58017abb7edc1dbd5d2ebd31a982b21563522da6e62ecc61fdb9bf95e25300f065acfe2a8413cd58

  • \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\5fbc1b2bd95bdfdd9f39c45bb22c00a797cf569998e3fa751d17c1341b35cd4b.exe

    Filesize

    321KB

    MD5

    2d54d36c1fdb759a739e5f172de31915

    SHA1

    1ed898b9dec38817074878d760b97a443d4111b6

    SHA256

    bedf8892805fc0178d265d51569daf04b16aa38b69be696ff0f1bbde3369831c

    SHA512

    4f523f838bdf3c7415e71897cf17aa2659cc89420f728bf21b77b9f768e6e0726acff19409f804d345c77c5f19446466fd7b8e2bf0fde8afa0bcdccef737650c

  • \Users\Admin\AppData\Local\Temp\3582-490\5fbc1b2bd95bdfdd9f39c45bb22c00a797cf569998e3fa751d17c1341b35cd4b.exe

    Filesize

    308KB

    MD5

    68714faaa6dea0012a8a0d1610704259

    SHA1

    90fed55558c1994d4a7e51b9fa4244d67734409b

    SHA256

    8a8b159c0fc11f8c09e476ce08d079a88cec8e3f862c879a83402344eed1faaa

    SHA512

    e911a61344fb3685211dc10122a728990f06559cb5414037d039188a77661ff022e7cf5bd5d12ad7175f38dbe15ce71363d68eee2dc761e4ff485cc0fdf91e1a

  • \Users\Admin\AppData\Local\Temp\3582-490\5fbc1b2bd95bdfdd9f39c45bb22c00a797cf569998e3fa751d17c1341b35cd4b.exe

    Filesize

    168KB

    MD5

    71c7ebdab95806ecf21b1fdc33308028

    SHA1

    97dc3c3578309a454b53287defe5aae66ffd9102

    SHA256

    4e7aa5c2ba30d3388d21f240273bace228ea7534a51add0c6f211d9939ec56ca

    SHA512

    3060fd4b2126f967df7bd3d862ff08d8c7b52462841b9c631c1544ee0b74b1a7cd1723476b9e22f7da8a82376a41542095b2eb6ea8c041d5797f2f27db0ddfdf

  • \Users\Admin\AppData\Local\Temp\3582-490\5fbc1b2bd95bdfdd9f39c45bb22c00a797cf569998e3fa751d17c1341b35cd4b.exe

    Filesize

    366KB

    MD5

    ae12367a382ac44c9bee5168ca2137a9

    SHA1

    041a38d2e5e63d8b53721098bcf539d910e0ebd7

    SHA256

    d3b64bcd6a27f3798b5b180a15b7f4c9dfaef79cb45cf926c7a361e4f0819951

    SHA512

    8386143f9a0db39b22e309467a047e7c34c82003a4794eec9014d753de21c456585e0d65f260bf3a93bf23db47eeaf14d533d00a53b19799f0049647c3dd6382

  • \Users\Admin\AppData\Local\Temp\3582-490\5fbc1b2bd95bdfdd9f39c45bb22c00a797cf569998e3fa751d17c1341b35cd4b.exe

    Filesize

    218KB

    MD5

    030a5c8cbad1ac78744397c6965e9455

    SHA1

    77a4b99b9bfd79d1f30e591dd93b8b90cd827a27

    SHA256

    998e87a4bda13d41ac262100c5efdb4380886006bd8a841fe807c37c76208611

    SHA512

    757f52d0922eaca594da227870e115d910a16d286db700c626e7efda5828b7f9aa097fc6c3e96ce747977a66ebd50799c4028cee33c422d40dbed0b3295ec49c

  • \Users\Admin\AppData\Local\Temp\3582-490\5fbc1b2bd95bdfdd9f39c45bb22c00a797cf569998e3fa751d17c1341b35cd4b.exe

    Filesize

    344KB

    MD5

    d94ab540b2142001ec8c8c374b639269

    SHA1

    9832d1a45242bd177c20bd061d45d9f7fe78536d

    SHA256

    a64b908a47502bbd554aa624e022633b10a8335d3bc3a7da82c8da103ea62c8b

    SHA512

    7cecab4fa7c461f6366c34c23086e5e323af4a8474b6b7a68dd75bb0590e191a078b46c5d6ec11e7e55fea18350c46a613ad4ae2634315f0d9940eb01f4ed9bb

  • memory/296-56-0x0000000000000000-mapping.dmp

  • memory/296-60-0x0000000000380000-0x00000000003BC000-memory.dmp

    Filesize

    240KB

  • memory/296-59-0x0000000001040000-0x00000000010B0000-memory.dmp

    Filesize

    448KB

  • memory/1104-63-0x0000000000000000-mapping.dmp

  • memory/1668-54-0x0000000075BF1000-0x0000000075BF3000-memory.dmp

    Filesize

    8KB