Analysis

  • max time kernel
    122s
  • max time network
    128s
  • platform
    windows7_x64
  • resource
    win7-20231020-en
  • resource tags

    arch:x64arch:x86image:win7-20231020-enlocale:en-usos:windows7-x64system
  • submitted
    23-10-2023 19:18

General

  • Target

    winrar-x64-624es.exe

  • Size

    3.5MB

  • MD5

    1da8374156fc6492f06828e55ea4dc13

  • SHA1

    4923d045851434d65ce7c56b7e1bd73a08fc2305

  • SHA256

    c94ed445611ed35ebbe8c3c2af5c17e20cdb8ef76ecbc1ef535bdec7ccf08f4b

  • SHA512

    445392ffca842263310d0f4b8371e0bfd6bcb40d9e846d645c73616b252315b0603d7e538d9e5415028c35f747989da5c14566cf356860304e889ae7f12565d2

  • SSDEEP

    98304:jwBOBfKqQ0K1MTXtbysMqIpmCcBQz/J6+14CeZx1kR7:jw/qQv1MTXhysMs1BQnG1G

Malware Config

Signatures

  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Drops file in Program Files directory 64 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 8 IoCs
  • Modifies system executable filetype association 2 TTPs 8 IoCs
  • Registers COM server for autorun 1 TTPs 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies Internet Explorer settings 1 TTPs 1 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\winrar-x64-624es.exe
    "C:\Users\Admin\AppData\Local\Temp\winrar-x64-624es.exe"
    1⤵
    • Drops file in Program Files directory
    • Loads dropped DLL
    • Modifies Internet Explorer settings
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:3024
    • C:\Program Files\WinRAR\uninstall.exe
      "C:\Program Files\WinRAR\uninstall.exe" /setup
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Modifies system executable filetype association
      • Registers COM server for autorun
      • Modifies registry class
      PID:2552
  • C:\Windows\system32\AUDIODG.EXE
    C:\Windows\system32\AUDIODG.EXE 0x524
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:616

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Program Files\WinRAR\Novedades.txt

    Filesize

    251KB

    MD5

    62ee9ad906f2478b3e39f7dbad6777fa

    SHA1

    c118b5f3fad345ed1a54d7b1b34f14f5b2c289ae

    SHA256

    390889e0bfe986016a11265ba60c1bff567a30883ad395a25a6857c607d48638

    SHA512

    8059485d6c18f6f9405632e419254284fd072f42572f7d4546851015cfc2c63f537075faa86291f91999e58ab9bbc9574a2bea199ffe3bbd6f0814f789bd4dfa

  • C:\Program Files\WinRAR\Rar.txt

    Filesize

    248KB

    MD5

    56956df4b1b4c4e860133674929993ec

    SHA1

    587e6ad93aaac4e98af4ca3cab8a7982484fc526

    SHA256

    87fac26160f3a1ace1c560f6e706e03b6868be62f88b09ad98e5aa0b1dbc8a1b

    SHA512

    15643ed67c9c21d9e481c0862413a555bc0e00fdc4a46b63ed6462b30d9455b6ab17873718772a682f38bbefd0b32b148e2364838f464402dfc363a5e00fce23

  • C:\Program Files\WinRAR\Uninstall.exe

    Filesize

    429KB

    MD5

    62c61b5bc915f81c8038aa83ed1a3b01

    SHA1

    d6e611c6bbc3f878e551d12c876b597cb88c2dbc

    SHA256

    a4ed7c4c337c1068cfc4298b8c5e166a66a6f6697352b1f3df0b9c9b1428f353

    SHA512

    919b4294152403a3be25127fb078a26e540ba5335454e29f865340fb6121c18078e0d1acb5f5d2deb8b8375932eb7d27f472060595020a258ae9639479fbfe53

  • C:\Program Files\WinRAR\Uninstall.exe

    Filesize

    429KB

    MD5

    62c61b5bc915f81c8038aa83ed1a3b01

    SHA1

    d6e611c6bbc3f878e551d12c876b597cb88c2dbc

    SHA256

    a4ed7c4c337c1068cfc4298b8c5e166a66a6f6697352b1f3df0b9c9b1428f353

    SHA512

    919b4294152403a3be25127fb078a26e540ba5335454e29f865340fb6121c18078e0d1acb5f5d2deb8b8375932eb7d27f472060595020a258ae9639479fbfe53

  • C:\Program Files\WinRAR\WinRAR.exe

    Filesize

    2.4MB

    MD5

    437c59059419449ff4d7cc13e76f37d6

    SHA1

    4c9eccde7f86ff9ecdd2c87dee253ed449720cdc

    SHA256

    d6eb9206a59e2e128898337b3cd9bc6ac46cbac166005c4b22a462a33892612c

    SHA512

    f9030f70ce5b4d478998335d89e0f38b14385d0a60bd8424f33279d043d45216655b19ccf3e691c65a82895d6478dc8f0f82a0777fd6e4b1d825dac4157ba987

  • C:\Program Files\WinRAR\uninstall.lng

    Filesize

    14KB

    MD5

    64915bd350c1f039e8b3de24cb0921c8

    SHA1

    3bc59eb66c6b0c68a20460b7f41695e8503bb667

    SHA256

    150cf78526a7a4275398dee2c01abb4bf907e981ffa65acbedb03ad3983cfab9

    SHA512

    d72f2754ebc4932ee1c02cb213683bc088bb35d813303d61082f8bfb76d842e7ef32b05b2abe1935337bd61bacd15666f970fbad5c16fe4607a94dd8f12c9855

  • C:\Program Files\WinRAR\winrar.chm

    Filesize

    364KB

    MD5

    6e53fa6ca58ca0cd3b700ccd2daaba84

    SHA1

    960ed9fbf23dd348aaf1d47bafc3ed82c71a3824

    SHA256

    c6c5fffdb448ede4ff0fe3dd42a9c18433e2678356c74a579f16b5af3f6f79ad

    SHA512

    0986363a2b3d106473b21336e675a0352607695b9e939f9e4463b07622e13fc798cd9d8671256e6234ad474a85bf255baa9495e9b42cd29d3e539d945658defa

  • \Program Files\WinRAR\Uninstall.exe

    Filesize

    429KB

    MD5

    62c61b5bc915f81c8038aa83ed1a3b01

    SHA1

    d6e611c6bbc3f878e551d12c876b597cb88c2dbc

    SHA256

    a4ed7c4c337c1068cfc4298b8c5e166a66a6f6697352b1f3df0b9c9b1428f353

    SHA512

    919b4294152403a3be25127fb078a26e540ba5335454e29f865340fb6121c18078e0d1acb5f5d2deb8b8375932eb7d27f472060595020a258ae9639479fbfe53

  • \Program Files\WinRAR\Uninstall.exe

    Filesize

    429KB

    MD5

    62c61b5bc915f81c8038aa83ed1a3b01

    SHA1

    d6e611c6bbc3f878e551d12c876b597cb88c2dbc

    SHA256

    a4ed7c4c337c1068cfc4298b8c5e166a66a6f6697352b1f3df0b9c9b1428f353

    SHA512

    919b4294152403a3be25127fb078a26e540ba5335454e29f865340fb6121c18078e0d1acb5f5d2deb8b8375932eb7d27f472060595020a258ae9639479fbfe53

  • \Program Files\WinRAR\Uninstall.exe

    Filesize

    429KB

    MD5

    62c61b5bc915f81c8038aa83ed1a3b01

    SHA1

    d6e611c6bbc3f878e551d12c876b597cb88c2dbc

    SHA256

    a4ed7c4c337c1068cfc4298b8c5e166a66a6f6697352b1f3df0b9c9b1428f353

    SHA512

    919b4294152403a3be25127fb078a26e540ba5335454e29f865340fb6121c18078e0d1acb5f5d2deb8b8375932eb7d27f472060595020a258ae9639479fbfe53

  • \Program Files\WinRAR\WinRAR.exe

    Filesize

    2.4MB

    MD5

    437c59059419449ff4d7cc13e76f37d6

    SHA1

    4c9eccde7f86ff9ecdd2c87dee253ed449720cdc

    SHA256

    d6eb9206a59e2e128898337b3cd9bc6ac46cbac166005c4b22a462a33892612c

    SHA512

    f9030f70ce5b4d478998335d89e0f38b14385d0a60bd8424f33279d043d45216655b19ccf3e691c65a82895d6478dc8f0f82a0777fd6e4b1d825dac4157ba987

  • \Program Files\WinRAR\WinRAR.exe

    Filesize

    2.4MB

    MD5

    437c59059419449ff4d7cc13e76f37d6

    SHA1

    4c9eccde7f86ff9ecdd2c87dee253ed449720cdc

    SHA256

    d6eb9206a59e2e128898337b3cd9bc6ac46cbac166005c4b22a462a33892612c

    SHA512

    f9030f70ce5b4d478998335d89e0f38b14385d0a60bd8424f33279d043d45216655b19ccf3e691c65a82895d6478dc8f0f82a0777fd6e4b1d825dac4157ba987

  • \Program Files\WinRAR\WinRAR.exe

    Filesize

    2.4MB

    MD5

    437c59059419449ff4d7cc13e76f37d6

    SHA1

    4c9eccde7f86ff9ecdd2c87dee253ed449720cdc

    SHA256

    d6eb9206a59e2e128898337b3cd9bc6ac46cbac166005c4b22a462a33892612c

    SHA512

    f9030f70ce5b4d478998335d89e0f38b14385d0a60bd8424f33279d043d45216655b19ccf3e691c65a82895d6478dc8f0f82a0777fd6e4b1d825dac4157ba987

  • \Program Files\WinRAR\WinRAR.exe

    Filesize

    2.4MB

    MD5

    437c59059419449ff4d7cc13e76f37d6

    SHA1

    4c9eccde7f86ff9ecdd2c87dee253ed449720cdc

    SHA256

    d6eb9206a59e2e128898337b3cd9bc6ac46cbac166005c4b22a462a33892612c

    SHA512

    f9030f70ce5b4d478998335d89e0f38b14385d0a60bd8424f33279d043d45216655b19ccf3e691c65a82895d6478dc8f0f82a0777fd6e4b1d825dac4157ba987

  • \Program Files\WinRAR\WinRAR.exe

    Filesize

    2.4MB

    MD5

    437c59059419449ff4d7cc13e76f37d6

    SHA1

    4c9eccde7f86ff9ecdd2c87dee253ed449720cdc

    SHA256

    d6eb9206a59e2e128898337b3cd9bc6ac46cbac166005c4b22a462a33892612c

    SHA512

    f9030f70ce5b4d478998335d89e0f38b14385d0a60bd8424f33279d043d45216655b19ccf3e691c65a82895d6478dc8f0f82a0777fd6e4b1d825dac4157ba987