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Analysis

  • max time kernel
    120s
  • max time network
    100s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02/09/2024, 10:00

General

  • Target

    ef33cca6c657b0841236c1cf3157c8f0N.exe

  • Size

    54KB

  • MD5

    ef33cca6c657b0841236c1cf3157c8f0

  • SHA1

    17ef73bf2e2df47a7dd6fa990e8de74565744a00

  • SHA256

    321a3d99805bad39358f205b6a6384a67ee775be5a4d4c6b601faea89a83a86e

  • SHA512

    cde97df4550e0515cfa2a30ac541a1ac4baeddf2680f168fa7407e3b8bee00983153eae684e58e893a2713e5e0356f0daa5d0bc895c8a46af836ce95b73d255d

  • SSDEEP

    768:V7Blpf/FAK65euBT37CPKKQSjyJJ1EXBwzEXBwdcMcI9bJSsJSCQZbQZw:V7Zf/FAxTWoJJ7TFJSsJSBcw

Malware Config

Signatures

  • Renames multiple (4670) files with added filename extension

    This suggests ransomware activity of encrypting all the files on the system.

  • UPX packed file 4 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Drops file in Program Files directory 64 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

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

Processes

  • C:\Users\Admin\AppData\Local\Temp\ef33cca6c657b0841236c1cf3157c8f0N.exe
    "C:\Users\Admin\AppData\Local\Temp\ef33cca6c657b0841236c1cf3157c8f0N.exe"
    1⤵
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    PID:2616

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\$Recycle.Bin\S-1-5-21-1194130065-3471212556-1656947724-1000\desktop.ini.tmp

    Filesize

    55KB

    MD5

    d9fca995c9b724f0fbd41422b84ffacf

    SHA1

    0ef15f814b620328092e9b5c35ff7f614e49e78b

    SHA256

    0bcbd52600938b75bed570a21f469f2e0fab281bd56fab9d0987fcced3aa9617

    SHA512

    d4601899fb7249cf2341dea8fa1f8dc0ea4e28d43e622073f6cc16299693c6a9a3922a6a1899f3f83a6a928009dd8255037780180c7f53dd9aba248dbabd8a03

  • C:\Program Files\7-Zip\7-zip.dll.tmp

    Filesize

    153KB

    MD5

    9ec6f804837768591be7ca66c577f7c2

    SHA1

    4a56a2249d9ab24b05410c26e46a5323e62bfe63

    SHA256

    10268c058415e57b960cf4bb6f81529651618965cc76b0511330c99e5c387533

    SHA512

    cdcb700740d1e4f1bec3658e2ac160fef51e1871800042a05cab511b16a6955a750c857658071570486636fac5e0d677f741d2b0142416dbae6c25f3f2c2e64e

  • memory/2616-0-0x0000000000400000-0x000000000040B000-memory.dmp

    Filesize

    44KB

  • memory/2616-928-0x0000000000400000-0x000000000040B000-memory.dmp

    Filesize

    44KB