Analysis

  • max time kernel
    595s
  • max time network
    419s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230703-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
  • submitted
    21-07-2023 21:24

General

  • Target

    99ebfcd47ddea91933d233075bcfd69086dab433.exe

  • Size

    2.6MB

  • MD5

    5f06e85193067e947298c7c9dc242e39

  • SHA1

    99ebfcd47ddea91933d233075bcfd69086dab433

  • SHA256

    49a20d0843236a4662ed6ef21adcac0be50766f55eee412de3a50ead4ba523dc

  • SHA512

    49bddcf586a1dd4b2b54496026c4a140d99687e83fcf114b312bdbfb862c3f335b248db641900a2def71d6a8b0145fff21295ef4dab8b59270b1e528be98613f

  • SSDEEP

    49152:Umtb3SFt78Jbc1HeJNA8hr0UAYhqft6BNhQrS5G8du1t2nYLlpCQJEiS6i4mq:UObCvX+82oOU8H1IWpYHCQJEiS6jmq

Score
8/10

Malware Config

Signatures

  • Downloads MZ/PE file
  • Executes dropped EXE 4 IoCs
  • Loads dropped DLL 9 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • UPX packed file 9 IoCs

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

  • Enumerates connected drives 3 TTPs 4 IoCs

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

  • Modifies system certificate store 2 TTPs 10 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\99ebfcd47ddea91933d233075bcfd69086dab433.exe
    "C:\Users\Admin\AppData\Local\Temp\99ebfcd47ddea91933d233075bcfd69086dab433.exe"
    1⤵
    • Loads dropped DLL
    • Enumerates connected drives
    • Modifies system certificate store
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:3388
    • C:\Users\Admin\AppData\Local\Temp\99ebfcd47ddea91933d233075bcfd69086dab433.exe
      C:\Users\Admin\AppData\Local\Temp\99ebfcd47ddea91933d233075bcfd69086dab433.exe --type=crashpad-handler /prefetch:7 --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.opera.com/collector/submit --annotation=channel=Stable --annotation=plat=Win32 --annotation=prod=OperaDesktop --annotation=ver=99.0.4788.65 --initial-client-data=0x2d8,0x2dc,0x2e0,0x2c0,0x2e4,0x74df20d0,0x74df20e0,0x74df20ec
      2⤵
      • Loads dropped DLL
      PID:2032
    • C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\99ebfcd47ddea91933d233075bcfd69086dab433.exe
      "C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\99ebfcd47ddea91933d233075bcfd69086dab433.exe" --version
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      PID:940
    • C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202307212125581\assistant\Assistant_100.0.4815.21_Setup.exe_sfx.exe
      "C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202307212125581\assistant\Assistant_100.0.4815.21_Setup.exe_sfx.exe"
      2⤵
      • Executes dropped EXE
      PID:4940
    • C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202307212125581\assistant\assistant_installer.exe
      "C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202307212125581\assistant\assistant_installer.exe" --version
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:4224
      • C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202307212125581\assistant\assistant_installer.exe
        "C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202307212125581\assistant\assistant_installer.exe" --type=crashpad-handler /prefetch:7 --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.opera.com/collector/submit --annotation=channel=Stable --annotation=plat=Win32 --annotation=prod=OperaDesktop --annotation=ver=100.0.4815.21 --initial-client-data=0x26c,0x270,0x274,0x248,0x278,0x89e8a0,0x89e8b0,0x89e8bc
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        PID:4412
    • C:\Users\Admin\AppData\Local\Temp\99ebfcd47ddea91933d233075bcfd69086dab433.exe
      "C:\Users\Admin\AppData\Local\Temp\99ebfcd47ddea91933d233075bcfd69086dab433.exe" --backend --install --import-browser-data=0 --enable-stats=1 --enable-installer-stats=1 --consent-given=1 --general-interests=1 --general-location=1 --personalized-content=1 --personalized-ads=1 --launchopera=1 --installfolder="C:\Users\Admin\Desktop\Opera" --profile-folder --language=en --singleprofile=1 --copyonly=1 --server-tracking-data=server_tracking_data --initial-pid=3388 --package-dir-prefix="C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_20230721212558" --session-guid=19df44a0-0c41-4039-87d6-0597df96bd26 --server-tracking-blob="NjFkODk4ZWJjMmNmNGQ1YjllMzkyYmJlMjJiYmQ5MDY3ZjdhY2U0Y2Y1NWMzYTQwM2Q2Zjk0N2YzZTU1NDA1Yzp7InByb2R1Y3QiOnsibmFtZSI6Ik9wZXJhIn0sInN5c3RlbSI6eyJwbGF0Zm9ybSI6eyJhcmNoIjoieDg2XzY0Iiwib3BzeXMiOiJXaW5kb3dzIiwib3BzeXMtdmVyc2lvbiI6IjEwIiwicGFja2FnZSI6IkVYRSJ9fX0= " --desktopshortcut=1 --wait-for-package --initial-proc-handle=A80A000000000000
      2⤵
      • Loads dropped DLL
      • Enumerates connected drives
      • Suspicious use of WriteProcessMemory
      PID:2044
      • C:\Users\Admin\AppData\Local\Temp\99ebfcd47ddea91933d233075bcfd69086dab433.exe
        C:\Users\Admin\AppData\Local\Temp\99ebfcd47ddea91933d233075bcfd69086dab433.exe --type=crashpad-handler /prefetch:7 --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.opera.com/collector/submit --annotation=channel=Stable --annotation=plat=Win32 --annotation=prod=OperaDesktop --annotation=ver=99.0.4788.65 --initial-client-data=0x2e4,0x2e8,0x2ec,0x2b4,0x2f0,0x721520d0,0x721520e0,0x721520ec
        3⤵
        • Loads dropped DLL
        PID:1012

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\99ebfcd47ddea91933d233075bcfd69086dab433.exe

    Filesize

    2.6MB

    MD5

    5f06e85193067e947298c7c9dc242e39

    SHA1

    99ebfcd47ddea91933d233075bcfd69086dab433

    SHA256

    49a20d0843236a4662ed6ef21adcac0be50766f55eee412de3a50ead4ba523dc

    SHA512

    49bddcf586a1dd4b2b54496026c4a140d99687e83fcf114b312bdbfb862c3f335b248db641900a2def71d6a8b0145fff21295ef4dab8b59270b1e528be98613f

  • C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202307212125581\additional_file0.tmp

    Filesize

    2.4MB

    MD5

    79ef7e63ffe3005c8edacaa49e997bdc

    SHA1

    9a236cb584c86c0d047ce55cdda4576dd40b027e

    SHA256

    388a4c959063e7edf133058e2cf797574bed808776a7c9a0307aaeb718ff7bd1

    SHA512

    59ee17f0f452617bcd1a4e42947310c52c21e88d31f1d6a09ebdb6ab400fcb1f997627a0f97fa185e58683d65a45425f8a7ec698f63a84d91c838e0f7e899094

  • C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202307212125581\assistant\Assistant_100.0.4815.21_Setup.exe_sfx.exe

    Filesize

    2.4MB

    MD5

    79ef7e63ffe3005c8edacaa49e997bdc

    SHA1

    9a236cb584c86c0d047ce55cdda4576dd40b027e

    SHA256

    388a4c959063e7edf133058e2cf797574bed808776a7c9a0307aaeb718ff7bd1

    SHA512

    59ee17f0f452617bcd1a4e42947310c52c21e88d31f1d6a09ebdb6ab400fcb1f997627a0f97fa185e58683d65a45425f8a7ec698f63a84d91c838e0f7e899094

  • C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202307212125581\assistant\Assistant_100.0.4815.21_Setup.exe_sfx.exe

    Filesize

    2.4MB

    MD5

    79ef7e63ffe3005c8edacaa49e997bdc

    SHA1

    9a236cb584c86c0d047ce55cdda4576dd40b027e

    SHA256

    388a4c959063e7edf133058e2cf797574bed808776a7c9a0307aaeb718ff7bd1

    SHA512

    59ee17f0f452617bcd1a4e42947310c52c21e88d31f1d6a09ebdb6ab400fcb1f997627a0f97fa185e58683d65a45425f8a7ec698f63a84d91c838e0f7e899094

  • C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202307212125581\assistant\assistant_installer.exe

    Filesize

    2.0MB

    MD5

    0d88834a56d914983a2fe03d6c8c7a83

    SHA1

    e1ecd04c3610fe5f9df9bb747ee4754ccbdddb35

    SHA256

    e61426a4c8d7d18d497e7ae7db69c470bae545a630e2d27eada917135fc65f53

    SHA512

    95233cbcc81838b16825ab7bd52981d99ae4ec27c91fcd5285bff5c4e6fcea43f4a0c78617c0b9404fb69d6d83871b32f0ed6c58ca62e73e41cd999b813c3fc1

  • C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202307212125581\assistant\assistant_installer.exe

    Filesize

    2.0MB

    MD5

    0d88834a56d914983a2fe03d6c8c7a83

    SHA1

    e1ecd04c3610fe5f9df9bb747ee4754ccbdddb35

    SHA256

    e61426a4c8d7d18d497e7ae7db69c470bae545a630e2d27eada917135fc65f53

    SHA512

    95233cbcc81838b16825ab7bd52981d99ae4ec27c91fcd5285bff5c4e6fcea43f4a0c78617c0b9404fb69d6d83871b32f0ed6c58ca62e73e41cd999b813c3fc1

  • C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202307212125581\assistant\dbgcore.DLL

    Filesize

    166KB

    MD5

    15a2bc75539a13167028a3d2940bf40a

    SHA1

    1aed6d2855b26aa7a8fb06d690a89da3fc8eca86

    SHA256

    07465dffa02c99d11dcd0a81ab7cea1fc97ef6666f37b2fd10592c1c463bf693

    SHA512

    141d44339fb706971a0b481e1987a0a0eb71e63d485404548ff7443ddf744a8b6a5f869c33e49141b974cdaf17e0a654785c8ddac789c2fb821ba0a8b72dea9d

  • C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202307212125581\assistant\dbgcore.dll

    Filesize

    166KB

    MD5

    15a2bc75539a13167028a3d2940bf40a

    SHA1

    1aed6d2855b26aa7a8fb06d690a89da3fc8eca86

    SHA256

    07465dffa02c99d11dcd0a81ab7cea1fc97ef6666f37b2fd10592c1c463bf693

    SHA512

    141d44339fb706971a0b481e1987a0a0eb71e63d485404548ff7443ddf744a8b6a5f869c33e49141b974cdaf17e0a654785c8ddac789c2fb821ba0a8b72dea9d

  • C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202307212125581\assistant\dbgcore.dll

    Filesize

    166KB

    MD5

    15a2bc75539a13167028a3d2940bf40a

    SHA1

    1aed6d2855b26aa7a8fb06d690a89da3fc8eca86

    SHA256

    07465dffa02c99d11dcd0a81ab7cea1fc97ef6666f37b2fd10592c1c463bf693

    SHA512

    141d44339fb706971a0b481e1987a0a0eb71e63d485404548ff7443ddf744a8b6a5f869c33e49141b974cdaf17e0a654785c8ddac789c2fb821ba0a8b72dea9d

  • C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202307212125581\assistant\dbghelp.dll

    Filesize

    1.7MB

    MD5

    2215b082f5128ab5e3f28219f9c4118a

    SHA1

    20c6e3294a5b8ebbebb55fc0e025afff33c3834d

    SHA256

    98593b37dfe911eea2fee3014fb1b5460c73433b73dc211d063701353441706d

    SHA512

    3e1249a0b4baad228045f4869273821f97a0cd108bc9385478e562e91830f6bc369810d6f4021c6e04e79b9ec0f4088056f4998950af46f6ab50366522aa887d

  • C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202307212125581\assistant\dbghelp.dll

    Filesize

    1.7MB

    MD5

    2215b082f5128ab5e3f28219f9c4118a

    SHA1

    20c6e3294a5b8ebbebb55fc0e025afff33c3834d

    SHA256

    98593b37dfe911eea2fee3014fb1b5460c73433b73dc211d063701353441706d

    SHA512

    3e1249a0b4baad228045f4869273821f97a0cd108bc9385478e562e91830f6bc369810d6f4021c6e04e79b9ec0f4088056f4998950af46f6ab50366522aa887d

  • C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202307212125581\assistant\dbghelp.dll

    Filesize

    1.7MB

    MD5

    2215b082f5128ab5e3f28219f9c4118a

    SHA1

    20c6e3294a5b8ebbebb55fc0e025afff33c3834d

    SHA256

    98593b37dfe911eea2fee3014fb1b5460c73433b73dc211d063701353441706d

    SHA512

    3e1249a0b4baad228045f4869273821f97a0cd108bc9385478e562e91830f6bc369810d6f4021c6e04e79b9ec0f4088056f4998950af46f6ab50366522aa887d

  • C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202307212125581\opera_package

    Filesize

    92.6MB

    MD5

    046e7d86df23a519db350184b0352568

    SHA1

    33eb4949fe46a7498c57b94bcac99407996ccb35

    SHA256

    68e27989a1c375dc3c012e0787dc6a638fb59a977d5228b5216ca396a1fa8584

    SHA512

    f8180a30e2b14fb595b93cf373d8e676a1725ee52fa018efb16ed24be2493e3cee7b99a7a4bd458f136de37564d7f5bdf8f3fe606698c3e1d79b175a462e68d3

  • C:\Users\Admin\AppData\Local\Temp\Opera_installer_2307212125524623388.dll

    Filesize

    4.4MB

    MD5

    b60c5892f5167d6daea172cf5f92f860

    SHA1

    816e929c6e22f70402339997c4d98aba6e5eaa16

    SHA256

    9b348744a1290b1c6c6589c0c678af927f637cd49c9b2c251bb2a637372133ff

    SHA512

    3950261b5c4195d3c1297b22c013d4483a4582554f5388880c5190a31544eb8f6c06a711831f31a4f04a554069a4c63b4b9fb82bf8a26a5a37b0ad977720cbfa

  • C:\Users\Admin\AppData\Local\Temp\Opera_installer_2307212125556342032.dll

    Filesize

    4.4MB

    MD5

    b60c5892f5167d6daea172cf5f92f860

    SHA1

    816e929c6e22f70402339997c4d98aba6e5eaa16

    SHA256

    9b348744a1290b1c6c6589c0c678af927f637cd49c9b2c251bb2a637372133ff

    SHA512

    3950261b5c4195d3c1297b22c013d4483a4582554f5388880c5190a31544eb8f6c06a711831f31a4f04a554069a4c63b4b9fb82bf8a26a5a37b0ad977720cbfa

  • C:\Users\Admin\AppData\Local\Temp\Opera_installer_230721212556650940.dll

    Filesize

    4.4MB

    MD5

    b60c5892f5167d6daea172cf5f92f860

    SHA1

    816e929c6e22f70402339997c4d98aba6e5eaa16

    SHA256

    9b348744a1290b1c6c6589c0c678af927f637cd49c9b2c251bb2a637372133ff

    SHA512

    3950261b5c4195d3c1297b22c013d4483a4582554f5388880c5190a31544eb8f6c06a711831f31a4f04a554069a4c63b4b9fb82bf8a26a5a37b0ad977720cbfa

  • C:\Users\Admin\AppData\Local\Temp\Opera_installer_230721212556650940.dll

    Filesize

    4.4MB

    MD5

    b60c5892f5167d6daea172cf5f92f860

    SHA1

    816e929c6e22f70402339997c4d98aba6e5eaa16

    SHA256

    9b348744a1290b1c6c6589c0c678af927f637cd49c9b2c251bb2a637372133ff

    SHA512

    3950261b5c4195d3c1297b22c013d4483a4582554f5388880c5190a31544eb8f6c06a711831f31a4f04a554069a4c63b4b9fb82bf8a26a5a37b0ad977720cbfa

  • C:\Users\Admin\AppData\Local\Temp\Opera_installer_2307212127129582044.dll

    Filesize

    4.4MB

    MD5

    b60c5892f5167d6daea172cf5f92f860

    SHA1

    816e929c6e22f70402339997c4d98aba6e5eaa16

    SHA256

    9b348744a1290b1c6c6589c0c678af927f637cd49c9b2c251bb2a637372133ff

    SHA512

    3950261b5c4195d3c1297b22c013d4483a4582554f5388880c5190a31544eb8f6c06a711831f31a4f04a554069a4c63b4b9fb82bf8a26a5a37b0ad977720cbfa

  • C:\Users\Admin\AppData\Local\Temp\Opera_installer_2307212127132241012.dll

    Filesize

    4.4MB

    MD5

    b60c5892f5167d6daea172cf5f92f860

    SHA1

    816e929c6e22f70402339997c4d98aba6e5eaa16

    SHA256

    9b348744a1290b1c6c6589c0c678af927f637cd49c9b2c251bb2a637372133ff

    SHA512

    3950261b5c4195d3c1297b22c013d4483a4582554f5388880c5190a31544eb8f6c06a711831f31a4f04a554069a4c63b4b9fb82bf8a26a5a37b0ad977720cbfa

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

    Filesize

    40B

    MD5

    a26378c24730835a24c3f853b3f0e949

    SHA1

    0e762f0670d158c4f08ad6f555a81bda12d935cd

    SHA256

    41d9b178c1401603a426250173d905ef7a7a40edf5c13d702e196ee4bdc65a68

    SHA512

    e5261187c536a3eecaf1f495eda37d70f8be44652f34c7cfa3b0dc37eed5d8634c4608d8eaa8765b9cd466b0b936b472fe69e7982539c7dcd2384b5f9038eeae

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

    Filesize

    40B

    MD5

    a26378c24730835a24c3f853b3f0e949

    SHA1

    0e762f0670d158c4f08ad6f555a81bda12d935cd

    SHA256

    41d9b178c1401603a426250173d905ef7a7a40edf5c13d702e196ee4bdc65a68

    SHA512

    e5261187c536a3eecaf1f495eda37d70f8be44652f34c7cfa3b0dc37eed5d8634c4608d8eaa8765b9cd466b0b936b472fe69e7982539c7dcd2384b5f9038eeae

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

    Filesize

    40B

    MD5

    a26378c24730835a24c3f853b3f0e949

    SHA1

    0e762f0670d158c4f08ad6f555a81bda12d935cd

    SHA256

    41d9b178c1401603a426250173d905ef7a7a40edf5c13d702e196ee4bdc65a68

    SHA512

    e5261187c536a3eecaf1f495eda37d70f8be44652f34c7cfa3b0dc37eed5d8634c4608d8eaa8765b9cd466b0b936b472fe69e7982539c7dcd2384b5f9038eeae

  • memory/940-148-0x0000000000770000-0x0000000000C8A000-memory.dmp

    Filesize

    5.1MB

  • memory/940-152-0x0000000000770000-0x0000000000C8A000-memory.dmp

    Filesize

    5.1MB

  • memory/1012-263-0x0000000000960000-0x0000000000E7A000-memory.dmp

    Filesize

    5.1MB

  • memory/2032-138-0x0000000000960000-0x0000000000E7A000-memory.dmp

    Filesize

    5.1MB

  • memory/2032-167-0x0000000000960000-0x0000000000E7A000-memory.dmp

    Filesize

    5.1MB

  • memory/2044-261-0x0000000000960000-0x0000000000E7A000-memory.dmp

    Filesize

    5.1MB

  • memory/3388-133-0x0000000000960000-0x0000000000E7A000-memory.dmp

    Filesize

    5.1MB

  • memory/3388-160-0x0000000000960000-0x0000000000E7A000-memory.dmp

    Filesize

    5.1MB