Analysis

  • max time kernel
    90s
  • max time network
    106s
  • platform
    windows7_x64
  • resource
    win7-20230220-en
  • resource tags

    arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
  • submitted
    31-03-2023 19:08

General

  • Target

    Adobe Flash 31 Windows/flashplayer31_0r0_153_win.exe

  • Size

    20.3MB

  • MD5

    2dd6a03469cf27db821ade02d3e7460b

  • SHA1

    204ea0483217bdee883d4bb73ac428f7439004a9

  • SHA256

    72a5df8903d8bddfb9a38f05d8a8ff9f9a9fe6cd6d6c6d4b08d9733a97e00016

  • SHA512

    4765d60376b44b1422e7891b7696573648b2b29b4af536f4c6bac80f15985dbd066b3cdaaeaa73f4cdac4344a36d0570098eb39f74594a2357fd3ba32f781e84

  • SSDEEP

    393216:TF0EAKW9nr5noMoQXijbqStE9x2BE/kk/S2LJHPVsichNksAj:5aKanlnoyO7va8k/SqXchNksE

Malware Config

Signatures

  • Sets file execution options in registry 2 TTPs 12 IoCs
  • Executes dropped EXE 4 IoCs
  • Loads dropped DLL 10 IoCs
  • Checks installed software on the system 1 TTPs

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

  • Checks whether UAC is enabled 1 TTPs 2 IoCs
  • Drops file in System32 directory 22 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies system certificate store 2 TTPs 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 9 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 25 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Adobe Flash 31 Windows\flashplayer31_0r0_153_win.exe
    "C:\Users\Admin\AppData\Local\Temp\Adobe Flash 31 Windows\flashplayer31_0r0_153_win.exe"
    1⤵
    • Sets file execution options in registry
    • Loads dropped DLL
    • Checks whether UAC is enabled
    • Drops file in System32 directory
    • Modifies system certificate store
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2040
    • C:\Windows\SysWOW64\Macromed\Temp\{4AA6DB44-E11E-4DF8-A6EC-BDC98722528F}\InstallFlashPlayer.exe
      "C:\Windows\system32\Macromed\Temp\{4AA6DB44-E11E-4DF8-A6EC-BDC98722528F}\InstallFlashPlayer.exe" -install -skipARPEntry -iv 1 -au 4294967295
      2⤵
      • Sets file execution options in registry
      • Executes dropped EXE
      • Loads dropped DLL
      • Checks whether UAC is enabled
      • Drops file in System32 directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of SetWindowsHookEx
      PID:616
    • C:\Windows\SysWOW64\Macromed\Flash\FlashPlayerUpdateService.exe
      C:\Windows\SysWOW64\Macromed\Flash\FlashPlayerUpdateService.exe -install
      2⤵
      • Executes dropped EXE
      PID:1084
    • C:\Windows\SysWOW64\Macromed\Flash\FlashPlayerUpdateService.exe
      C:\Windows\SysWOW64\Macromed\Flash\FlashPlayerUpdateService.exe -uninstall
      2⤵
      • Executes dropped EXE
      • Drops file in System32 directory
      PID:1880
    • C:\Windows\SysWOW64\Macromed\Flash\FlashPlayerUpdateService.exe
      C:\Windows\SysWOW64\Macromed\Flash\FlashPlayerUpdateService.exe -setDisableAutoUpdate
      2⤵
      • Executes dropped EXE
      • Drops file in System32 directory
      PID:1072

Network

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Modify Registry

2
T1112

Install Root Certificate

1
T1130

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Windows\SysWOW64\Macromed\Flash\FlashInstall32.log
    Filesize

    3KB

    MD5

    9d79174d5f69b57ae0ae1f89964a04ad

    SHA1

    987493f52fe2d82e290d1aaa2708e61164e36d3f

    SHA256

    1a2918d8a5b60163194195328ccb205fc6939aeed18d08fb6fb40e5ba9449e23

    SHA512

    2361f06c9852d1fa9e6979c0b40cf80a8b372085b0b3b7ea964ed42703b2709896fd6fd981b03f0e3527c73a04f3ab4e77e0d77b5000c890a075ec4cbced39d8

  • C:\Windows\SysWOW64\Macromed\Flash\FlashPlayerUpdateService.exe
    Filesize

    328KB

    MD5

    c5b2ce0b57ea203591e49830129bf877

    SHA1

    b90c89c613911affee31068fd681c07a63868033

    SHA256

    e2c998223fb9bd8774b97b7ed309d9c603b66931ee0c36b20247a94752349485

    SHA512

    9054f64cde9bffe0800d2c83a59f612c137c07e17e379bf4d059c2b0037fc6c7c827a68b22a52486bb495600ae9b1047e4bb9c241e657528e2edb4c342dd8441

  • C:\Windows\SysWOW64\Macromed\Flash\FlashPlayerUpdateService.exe
    Filesize

    328KB

    MD5

    c5b2ce0b57ea203591e49830129bf877

    SHA1

    b90c89c613911affee31068fd681c07a63868033

    SHA256

    e2c998223fb9bd8774b97b7ed309d9c603b66931ee0c36b20247a94752349485

    SHA512

    9054f64cde9bffe0800d2c83a59f612c137c07e17e379bf4d059c2b0037fc6c7c827a68b22a52486bb495600ae9b1047e4bb9c241e657528e2edb4c342dd8441

  • C:\Windows\SysWOW64\Macromed\Flash\FlashPlayerUpdateService.exe
    Filesize

    328KB

    MD5

    c5b2ce0b57ea203591e49830129bf877

    SHA1

    b90c89c613911affee31068fd681c07a63868033

    SHA256

    e2c998223fb9bd8774b97b7ed309d9c603b66931ee0c36b20247a94752349485

    SHA512

    9054f64cde9bffe0800d2c83a59f612c137c07e17e379bf4d059c2b0037fc6c7c827a68b22a52486bb495600ae9b1047e4bb9c241e657528e2edb4c342dd8441

  • C:\Windows\SysWOW64\Macromed\Flash\FlashPlayerUpdateService.exe
    Filesize

    328KB

    MD5

    c5b2ce0b57ea203591e49830129bf877

    SHA1

    b90c89c613911affee31068fd681c07a63868033

    SHA256

    e2c998223fb9bd8774b97b7ed309d9c603b66931ee0c36b20247a94752349485

    SHA512

    9054f64cde9bffe0800d2c83a59f612c137c07e17e379bf4d059c2b0037fc6c7c827a68b22a52486bb495600ae9b1047e4bb9c241e657528e2edb4c342dd8441

  • C:\Windows\SysWOW64\Macromed\Flash\FlashUtil32_31_0_0_153_Plugin.exe
    Filesize

    1.4MB

    MD5

    9240b70bedb18f625f814149742ec7b1

    SHA1

    4ecc6db510da02b951e0749bd4ed1c1c1c998baf

    SHA256

    12b6c16d5cd351f1e120acbe47f14067ad377ae9af91b82ddbb973b8cc7a03a0

    SHA512

    c211763a88942da392abcba45e05a18564a0d654b36f3674c7d1b2530de60551592984fe2f6d6bb6b073d303e33927ed46dacc58c4916f43857442e19c963b1a

  • C:\Windows\SysWOW64\Macromed\Temp\{4AA6DB44-E11E-4DF8-A6EC-BDC98722528F}\InstallFlashPlayer.exe
    Filesize

    10.1MB

    MD5

    f4f90315308c1afe30220d4731df678f

    SHA1

    1ccb188ce404f6a07b08473d85586fd16441d233

    SHA256

    622f4a708c37550f970669bfa7d9b9e55ec9f1a7aeb5cfa4f3edbe72e1165480

    SHA512

    48460ad1a26ec4e7557bb3aba6c95f2bbf92a8131a01a179e4488320528efe11586f2790612d3653550b61f895cb19831d56504c453b5a1c1be23723d5b82dee

  • C:\Windows\SysWOW64\Macromed\Temp\{4AA6DB44-E11E-4DF8-A6EC-BDC98722528F}\InstallFlashPlayer.exe
    Filesize

    10.1MB

    MD5

    f4f90315308c1afe30220d4731df678f

    SHA1

    1ccb188ce404f6a07b08473d85586fd16441d233

    SHA256

    622f4a708c37550f970669bfa7d9b9e55ec9f1a7aeb5cfa4f3edbe72e1165480

    SHA512

    48460ad1a26ec4e7557bb3aba6c95f2bbf92a8131a01a179e4488320528efe11586f2790612d3653550b61f895cb19831d56504c453b5a1c1be23723d5b82dee

  • C:\Windows\SysWOW64\Macromed\Temp\{74D514C5-BA4E-4D8E-808F-83EB5BB6A974}\fpb.tmp
    Filesize

    577KB

    MD5

    3bf01b9c32e70a68be61273be8f5a40f

    SHA1

    057bc537346150fb3bd1f450517e75eedc4e877d

    SHA256

    0f7c40c68fcfaa728410c82c094324ae96f0c31286a2d3da6807327ff720a27b

    SHA512

    24019a2624a1457a98781a4fc85cd6058f42be115376caa78f1102f180ea2b54d13c51cfaf424c6bf4c6f49b84d6ec3156270a63cb964fbaa95d7098834148f3

  • C:\Windows\System32\Macromed\Flash\FlashUtil64_31_0_0_153_Plugin.exe
    Filesize

    1002KB

    MD5

    0576f02f387b972f013e4b79a759be83

    SHA1

    7ae894e90976e74030bb2f1ad5f7da3ee63e8991

    SHA256

    29fe518f8f497053c40cf9b3564576e7f78b9f923dc706521f09a4155e9ffee2

    SHA512

    a4e5b4b645f732d9874f0c10fc629e90a66ee1ed3bbcb1541d979d0e2a106fcdac21e44e346c04515dc8641de9a92efc15779d826f1ab3397e5ae6917bd80617

  • C:\Windows\System32\Macromed\Temp\{FD1AD3F3-9E5D-4444-85EE-689DBC7EF6D8}\fpb.tmp
    Filesize

    660KB

    MD5

    56970cb17f831635baa4dd2ec49d7681

    SHA1

    a4ee0e140abfbfe454e773ae76435763f0cf8325

    SHA256

    9edf9372dfad5c8a3761089f573edeab1ff63e3605899b0fd1251edeead3299d

    SHA512

    9b090805c6cabbdd78b17d7e889c24ce2726021e51cbe5102b1fad2f54fd440a8c952c2c90ca1fef360b768cbc90f7cff9fa4d476caae7deacba7f8d81b433bf

  • \Windows\SysWOW64\Macromed\Flash\FlashPlayerUpdateService.exe
    Filesize

    328KB

    MD5

    c5b2ce0b57ea203591e49830129bf877

    SHA1

    b90c89c613911affee31068fd681c07a63868033

    SHA256

    e2c998223fb9bd8774b97b7ed309d9c603b66931ee0c36b20247a94752349485

    SHA512

    9054f64cde9bffe0800d2c83a59f612c137c07e17e379bf4d059c2b0037fc6c7c827a68b22a52486bb495600ae9b1047e4bb9c241e657528e2edb4c342dd8441

  • \Windows\SysWOW64\Macromed\Flash\FlashPlayerUpdateService.exe
    Filesize

    328KB

    MD5

    c5b2ce0b57ea203591e49830129bf877

    SHA1

    b90c89c613911affee31068fd681c07a63868033

    SHA256

    e2c998223fb9bd8774b97b7ed309d9c603b66931ee0c36b20247a94752349485

    SHA512

    9054f64cde9bffe0800d2c83a59f612c137c07e17e379bf4d059c2b0037fc6c7c827a68b22a52486bb495600ae9b1047e4bb9c241e657528e2edb4c342dd8441

  • \Windows\SysWOW64\Macromed\Flash\FlashPlayerUpdateService.exe
    Filesize

    328KB

    MD5

    c5b2ce0b57ea203591e49830129bf877

    SHA1

    b90c89c613911affee31068fd681c07a63868033

    SHA256

    e2c998223fb9bd8774b97b7ed309d9c603b66931ee0c36b20247a94752349485

    SHA512

    9054f64cde9bffe0800d2c83a59f612c137c07e17e379bf4d059c2b0037fc6c7c827a68b22a52486bb495600ae9b1047e4bb9c241e657528e2edb4c342dd8441

  • \Windows\SysWOW64\Macromed\Flash\FlashUtil32_31_0_0_153_Plugin.exe
    Filesize

    1.4MB

    MD5

    9240b70bedb18f625f814149742ec7b1

    SHA1

    4ecc6db510da02b951e0749bd4ed1c1c1c998baf

    SHA256

    12b6c16d5cd351f1e120acbe47f14067ad377ae9af91b82ddbb973b8cc7a03a0

    SHA512

    c211763a88942da392abcba45e05a18564a0d654b36f3674c7d1b2530de60551592984fe2f6d6bb6b073d303e33927ed46dacc58c4916f43857442e19c963b1a

  • \Windows\SysWOW64\Macromed\Temp\{3DE6CD12-78A4-4889-B2B2-47C1BE8AF035}\fpb.tmp
    Filesize

    1.4MB

    MD5

    9240b70bedb18f625f814149742ec7b1

    SHA1

    4ecc6db510da02b951e0749bd4ed1c1c1c998baf

    SHA256

    12b6c16d5cd351f1e120acbe47f14067ad377ae9af91b82ddbb973b8cc7a03a0

    SHA512

    c211763a88942da392abcba45e05a18564a0d654b36f3674c7d1b2530de60551592984fe2f6d6bb6b073d303e33927ed46dacc58c4916f43857442e19c963b1a

  • \Windows\SysWOW64\Macromed\Temp\{4AA6DB44-E11E-4DF8-A6EC-BDC98722528F}\InstallFlashPlayer.exe
    Filesize

    10.1MB

    MD5

    f4f90315308c1afe30220d4731df678f

    SHA1

    1ccb188ce404f6a07b08473d85586fd16441d233

    SHA256

    622f4a708c37550f970669bfa7d9b9e55ec9f1a7aeb5cfa4f3edbe72e1165480

    SHA512

    48460ad1a26ec4e7557bb3aba6c95f2bbf92a8131a01a179e4488320528efe11586f2790612d3653550b61f895cb19831d56504c453b5a1c1be23723d5b82dee

  • \Windows\SysWOW64\Macromed\Temp\{74D514C5-BA4E-4D8E-808F-83EB5BB6A974}\fpb.tmp
    Filesize

    577KB

    MD5

    3bf01b9c32e70a68be61273be8f5a40f

    SHA1

    057bc537346150fb3bd1f450517e75eedc4e877d

    SHA256

    0f7c40c68fcfaa728410c82c094324ae96f0c31286a2d3da6807327ff720a27b

    SHA512

    24019a2624a1457a98781a4fc85cd6058f42be115376caa78f1102f180ea2b54d13c51cfaf424c6bf4c6f49b84d6ec3156270a63cb964fbaa95d7098834148f3

  • \Windows\System32\Macromed\Flash\FlashUtil64_31_0_0_153_Plugin.exe
    Filesize

    1002KB

    MD5

    0576f02f387b972f013e4b79a759be83

    SHA1

    7ae894e90976e74030bb2f1ad5f7da3ee63e8991

    SHA256

    29fe518f8f497053c40cf9b3564576e7f78b9f923dc706521f09a4155e9ffee2

    SHA512

    a4e5b4b645f732d9874f0c10fc629e90a66ee1ed3bbcb1541d979d0e2a106fcdac21e44e346c04515dc8641de9a92efc15779d826f1ab3397e5ae6917bd80617

  • \Windows\System32\Macromed\Temp\{6C4B2C34-E36A-4359-9502-3A360578F1A4}\fpb.tmp
    Filesize

    1002KB

    MD5

    0576f02f387b972f013e4b79a759be83

    SHA1

    7ae894e90976e74030bb2f1ad5f7da3ee63e8991

    SHA256

    29fe518f8f497053c40cf9b3564576e7f78b9f923dc706521f09a4155e9ffee2

    SHA512

    a4e5b4b645f732d9874f0c10fc629e90a66ee1ed3bbcb1541d979d0e2a106fcdac21e44e346c04515dc8641de9a92efc15779d826f1ab3397e5ae6917bd80617

  • \Windows\System32\Macromed\Temp\{FD1AD3F3-9E5D-4444-85EE-689DBC7EF6D8}\fpb.tmp
    Filesize

    660KB

    MD5

    56970cb17f831635baa4dd2ec49d7681

    SHA1

    a4ee0e140abfbfe454e773ae76435763f0cf8325

    SHA256

    9edf9372dfad5c8a3761089f573edeab1ff63e3605899b0fd1251edeead3299d

    SHA512

    9b090805c6cabbdd78b17d7e889c24ce2726021e51cbe5102b1fad2f54fd440a8c952c2c90ca1fef360b768cbc90f7cff9fa4d476caae7deacba7f8d81b433bf