Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    26-08-2024 00:59

General

  • Target

    cf44098105f2f61c3b1e3589f52d28fc2f52537d74480afc649dbb2621474298.exe

  • Size

    2.0MB

  • MD5

    4e7e93305dce2e2413996310401f049c

  • SHA1

    1f4cf694215bb527fc2f3e826e39c34c38e3ae2b

  • SHA256

    cf44098105f2f61c3b1e3589f52d28fc2f52537d74480afc649dbb2621474298

  • SHA512

    208dd68d7aef7170b4f8d0d35f0cec7e13d7c69f2782183669acaca4a5011f18ac92bb9bdbe9b6a1f89cd39a12673ec98e9c97b880e0d7de05749a392b9cd5e0

  • SSDEEP

    49152:pVAbwUQUFD1VR+zbTPDyoW53zJJfvRCYd60p9e9bldMi:fACQZGbo1HRCYd6b9x+

Malware Config

Signatures

  • Downloads MZ/PE file
  • Executes dropped EXE 6 IoCs
  • Loads dropped DLL 7 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Enumerates connected drives 3 TTPs 2 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • System Location Discovery: System Language Discovery 1 TTPs 7 IoCs

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

  • Modifies system certificate store 2 TTPs 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 18 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\cf44098105f2f61c3b1e3589f52d28fc2f52537d74480afc649dbb2621474298.exe
    "C:\Users\Admin\AppData\Local\Temp\cf44098105f2f61c3b1e3589f52d28fc2f52537d74480afc649dbb2621474298.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4908
    • C:\Users\Admin\AppData\Local\Temp\7zSC2384197\setup.exe
      C:\Users\Admin\AppData\Local\Temp\7zSC2384197\setup.exe
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Enumerates connected drives
      • System Location Discovery: System Language Discovery
      • Modifies system certificate store
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:4804
      • C:\Users\Admin\AppData\Local\Temp\7zSC2384197\setup.exe
        C:\Users\Admin\AppData\Local\Temp\7zSC2384197\setup.exe --type=crashpad-handler /prefetch:4 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Roaming\Opera Software\Opera Stable\Crash Reports" "--crash-count-file=C:\Users\Admin\AppData\Roaming\Opera Software\Opera Stable\crash_count.txt" --url=https://crashstats-collector-2.opera.com/ --annotation=channel=Stable --annotation=plat=Win32 --annotation=prod=OperaDesktop --annotation=ver=113.0.5230.32 --initial-client-data=0x330,0x334,0x338,0x32c,0x33c,0x749eae8c,0x749eae98,0x749eaea4
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:1080
      • C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\setup.exe
        "C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\setup.exe" --version
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:4136
      • C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202408260059581\assistant\Assistant_113.0.5230.31_Setup.exe_sfx.exe
        "C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202408260059581\assistant\Assistant_113.0.5230.31_Setup.exe_sfx.exe"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:4544
      • C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202408260059581\assistant\assistant_installer.exe
        "C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202408260059581\assistant\assistant_installer.exe" --version
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2096
        • C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202408260059581\assistant\assistant_installer.exe
          "C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202408260059581\assistant\assistant_installer.exe" --type=crashpad-handler /prefetch:4 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Roaming\Opera Software\Opera Stable\Crash Reports" "--crash-count-file=C:\Users\Admin\AppData\Roaming\Opera Software\Opera Stable\crash_count.txt" --url=https://crashstats-collector-2.opera.com/ --annotation=channel=Stable --annotation=plat=Win32 --annotation=prod=OperaDesktop --annotation=ver=113.0.5230.31 --initial-client-data=0x220,0x224,0x228,0x1fc,0x22c,0xf02c48,0xf02c54,0xf02c60
          4⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • System Location Discovery: System Language Discovery
          PID:2536

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\NUB8HZ4Z\Assistant_113.0.5230.31_Setup[1].exe

    Filesize

    2.6MB

    MD5

    0995a010e2f8b866c6abca90fa49130f

    SHA1

    f282871f9d6333f5bcc738062613c44567a58dc0

    SHA256

    74d4c26b0ee35a7431944e51aaf5ec4ab3338b6776bf44bdfdbc1e201b4fea76

    SHA512

    b98e4bd252a9bdb11a7f15c795910daabdbe8e0ba0fa86a5ee6f8167ff66a9b67790c51f700666239781ad46241926590588b6831d16e5057dcbfebe37c3ae6b

  • C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202408260059581\assistant\assistant_installer.exe

    Filesize

    1.9MB

    MD5

    1d980ac7aa07def69627a334168853f9

    SHA1

    c4b6a91eb61eb1a946b922ceef9aea86dde79eb5

    SHA256

    a08d4c13a57600c280d10aa2d0c5c13352638b6ac38651aa908af1c0ec351807

    SHA512

    e8f7afb5299d627d67f6656f71006f60c1dbaa535175ff935d2934197e2ed5faca0f9d64897695965deeeea7612a4229bf117a8243a3b5de902a001d4e91797b

  • C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202408260059581\assistant\dbgcore.dll

    Filesize

    166KB

    MD5

    98d373f7e891c8282b7a163880ffff55

    SHA1

    a84b5607aebd38833a96ee46b33f2d1b748e6ea0

    SHA256

    67bce323f46300c83866e02b1a3923b93834e30741999b965b351531073e8f2b

    SHA512

    b417629c5276ed942578273af5d2de4ab35fdb1cec102b47999b0b54d50c98d0ec36e8fca01db8c6f9fc4dc6aa130fef916fe07d131586c84f4a75bb589bb927

  • C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202408260059581\assistant\dbghelp.dll

    Filesize

    1.7MB

    MD5

    49c70bed12c523235e2e154326b1a8f0

    SHA1

    4a011c6909ea9c08357dd4bebdd62f8b3bfab8dd

    SHA256

    27251f799e2d950c561fda99c07ff49553c1d538ccd544bcd1ee12820eed5cd5

    SHA512

    1553f9ddbb95603d82c01668320a128766ba8b039ee127f86a2008de222e9390b4d8b7153443444790c946b40742b85625fbc422e81073a353e9e434cc56eba3

  • C:\Users\Admin\AppData\Local\Temp\7zSC2384197\setup.exe

    Filesize

    5.1MB

    MD5

    96be1b5fb15ec0912b8de6133d283180

    SHA1

    86d5f8af9018f27045389a48a66dffa7e1f8daf1

    SHA256

    04eead61515be0515643281aa8f29809facddd419c5bc06450d031d64e60461c

    SHA512

    c649720a6ac4409b32663f9987aca971e1475b7e30c2b7c2c31467a1214228f8d93f154580b0436933f86f998e8079d0df7e2f67b20adfa2aaaaff075a16ed32

  • C:\Users\Admin\AppData\Local\Temp\Opera_installer_2408260059577464804.dll

    Filesize

    4.6MB

    MD5

    b84992e5212817c964aa64b35dbf0ac6

    SHA1

    9361bf7b334f06ee3b3fd0770bf8dea0c2518146

    SHA256

    a3a7dab81491b07cda3d6c5d8ed1655c9b39c6db01a532d7d429b2f0aece3fc8

    SHA512

    9b61ab193514505c64fdad8b7457bec96ae7af1835a16d60f781e1240d29f20fa72479d395e3ff45f42197ffc82e96eac107f9d19ef3274efaddd71ee66ba2a4

  • C:\Users\Admin\AppData\Roaming\Opera Software\Opera Stable\Crash Reports\settings.dat

    Filesize

    40B

    MD5

    6475b4a3cef251585bd83efffc27f0ae

    SHA1

    f36162332b91e1df3f84472bacd97fce46f06151

    SHA256

    f9d840c160c308dafc1774794e3a040c1670c30be0841b34e69fd33526ba6774

    SHA512

    a077b540a0bf6f3f4ebb9d0b0bfe6eec84c810b1634b6592906d544f2c305a7d0cc406b2037cc8fcbefd144f92f6c777fd453a3f7b515af78348e781af1b4b07