Resubmissions

19-06-2024 08:57

240619-kwlwbasbjj 3

19-06-2024 08:50

240619-kr2qzasanq 7

Analysis

  • max time kernel
    74s
  • max time network
    71s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    19-06-2024 08:50

General

  • Target

    cch_blum_re.pyc

  • Size

    7KB

  • MD5

    b3b9b54ddc84df18135852ee3ede2383

  • SHA1

    6841a45353951cbbb8a9bb7a8489a1ab43ce4669

  • SHA256

    b8e5ae90d66993923b851d0aeb26c0031b56f46a7151d71a0fee2b77bd9bf691

  • SHA512

    86db3c0eba1533bbe3ca62c324106e199756c09aa5477ab90c0711c28cc01fade9f87f89ebba78117102775194b0a197f95f93c95a8e5ec7c3a0295d494dee68

  • SSDEEP

    192:8w5Cpjqg1Bo123UpK/PIFwH7GSPFy0xg60GeA:sWmK23UpK/P/bG8aA

Score
3/10

Malware Config

Signatures

  • Enumerates physical storage devices 1 TTPs

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

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Modifies data under HKEY_USERS 2 IoCs
  • Modifies registry class 63 IoCs
  • Opens file in notepad (likely ransom note) 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 2 IoCs
  • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 7 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 26 IoCs
  • Suspicious use of SendNotifyMessage 24 IoCs
  • Suspicious use of SetWindowsHookEx 18 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Windows\system32\cmd.exe
    cmd /c C:\Users\Admin\AppData\Local\Temp\cch_blum_re.pyc
    1⤵
    • Modifies registry class
    PID:3152
  • C:\Windows\system32\OpenWith.exe
    C:\Windows\system32\OpenWith.exe -Embedding
    1⤵
    • Modifies registry class
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1244
    • C:\Windows\system32\NOTEPAD.EXE
      "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Local\Temp\cch_blum_re.pyc
      2⤵
      • Modifies registry class
      • Opens file in notepad (likely ransom note)
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of SetWindowsHookEx
      PID:2032
  • C:\Program Files\Google\Chrome\Application\chrome.exe
    "C:\Program Files\Google\Chrome\Application\chrome.exe"
    1⤵
    • Enumerates system info in registry
    • Modifies data under HKEY_USERS
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:4536
    • C:\Program Files\Google\Chrome\Application\chrome.exe
      "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=crashpad-handler "--user-data-dir=C:\Users\Admin\AppData\Local\Google\Chrome\User Data" /prefetch:7 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Crashpad" "--metrics-dir=C:\Users\Admin\AppData\Local\Google\Chrome\User Data" --url=https://clients2.google.com/cr/report --annotation=channel= --annotation=plat=Win64 --annotation=prod=Chrome --annotation=ver=110.0.5481.104 --initial-client-data=0x11c,0x120,0x124,0xf8,0x128,0x7ffd1702ab58,0x7ffd1702ab68,0x7ffd1702ab78
      2⤵
        PID:3260
      • C:\Program Files\Google\Chrome\Application\chrome.exe
        "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=gpu-process --gpu-preferences=UAAAAAAAAADgAAAYAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAQAAAAAAAAAAAAAAAAAAAAAAAAAEgAAAAAAAAASAAAAAAAAAAYAAAAAgAAABAAAAAAAAAAGAAAAAAAAAAQAAAAAAAAAAAAAAAOAAAAEAAAAAAAAAABAAAADgAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=1744 --field-trial-handle=2036,i,12249787584817777594,10277671112743970270,131072 /prefetch:2
        2⤵
          PID:516
        • C:\Program Files\Google\Chrome\Application\chrome.exe
          "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=1984 --field-trial-handle=2036,i,12249787584817777594,10277671112743970270,131072 /prefetch:8
          2⤵
            PID:2756
          • C:\Program Files\Google\Chrome\Application\chrome.exe
            "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=storage.mojom.StorageService --lang=en-US --service-sandbox-type=service --mojo-platform-channel-handle=2260 --field-trial-handle=2036,i,12249787584817777594,10277671112743970270,131072 /prefetch:8
            2⤵
              PID:1476
            • C:\Program Files\Google\Chrome\Application\chrome.exe
              "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --first-renderer-process --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=6 --mojo-platform-channel-handle=3140 --field-trial-handle=2036,i,12249787584817777594,10277671112743970270,131072 /prefetch:1
              2⤵
                PID:732
              • C:\Program Files\Google\Chrome\Application\chrome.exe
                "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=5 --mojo-platform-channel-handle=3144 --field-trial-handle=2036,i,12249787584817777594,10277671112743970270,131072 /prefetch:1
                2⤵
                  PID:2824
                • C:\Program Files\Google\Chrome\Application\chrome.exe
                  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=7 --mojo-platform-channel-handle=4368 --field-trial-handle=2036,i,12249787584817777594,10277671112743970270,131072 /prefetch:1
                  2⤵
                    PID:672
                  • C:\Program Files\Google\Chrome\Application\chrome.exe
                    "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=chrome.mojom.ProcessorMetrics --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=4676 --field-trial-handle=2036,i,12249787584817777594,10277671112743970270,131072 /prefetch:8
                    2⤵
                      PID:4436
                    • C:\Program Files\Google\Chrome\Application\chrome.exe
                      "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=chrome.mojom.UtilWin --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=4780 --field-trial-handle=2036,i,12249787584817777594,10277671112743970270,131072 /prefetch:8
                      2⤵
                        PID:2640
                      • C:\Program Files\Google\Chrome\Application\chrome.exe
                        "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=10 --mojo-platform-channel-handle=4224 --field-trial-handle=2036,i,12249787584817777594,10277671112743970270,131072 /prefetch:1
                        2⤵
                          PID:5080
                        • C:\Program Files\Google\Chrome\Application\chrome.exe
                          "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=11 --mojo-platform-channel-handle=4544 --field-trial-handle=2036,i,12249787584817777594,10277671112743970270,131072 /prefetch:1
                          2⤵
                            PID:3228
                          • C:\Program Files\Google\Chrome\Application\chrome.exe
                            "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=12 --mojo-platform-channel-handle=3292 --field-trial-handle=2036,i,12249787584817777594,10277671112743970270,131072 /prefetch:1
                            2⤵
                              PID:4316
                            • C:\Program Files\Google\Chrome\Application\chrome.exe
                              "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=13 --mojo-platform-channel-handle=4160 --field-trial-handle=2036,i,12249787584817777594,10277671112743970270,131072 /prefetch:1
                              2⤵
                                PID:3880
                            • C:\Program Files\Google\Chrome\Application\110.0.5481.104\elevation_service.exe
                              "C:\Program Files\Google\Chrome\Application\110.0.5481.104\elevation_service.exe"
                              1⤵
                                PID:2708

                              Network

                              MITRE ATT&CK Enterprise v15

                              Replay Monitor

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                              Downloads

                              • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Network\SCT Auditing Pending Reports

                                Filesize

                                2B

                                MD5

                                d751713988987e9331980363e24189ce

                                SHA1

                                97d170e1550eee4afc0af065b78cda302a97674c

                                SHA256

                                4f53cda18c2baa0c0354bb5f9a3ecbe5ed12ab4d8e11ba873c2f11161202b945

                                SHA512

                                b25b294cb4deb69ea00a4c3cf3113904801b6015e5956bd019a8570b1fe1d6040e944ef3cdee16d0a46503ca6e659a25f21cf9ceddc13f352a3c98138c15d6af

                              • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Preferences

                                Filesize

                                7KB

                                MD5

                                4de48810797102c135ef82f5d6e979cc

                                SHA1

                                f903a2ea4bec05708c225695d63da4234672cdcc

                                SHA256

                                d05cd15c84aa1e655c10c25da9b7459327bdd869c939da19de60059a586ae7dd

                                SHA512

                                71f866e1a0512e9dec8ed6597bc3223098b7cbeeac3b7e86fba4f18f9c6e6f696273ca8a5448bdc305e81378a1627146e4639554df7bbef63a85b222823a8b83

                              • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Preferences

                                Filesize

                                7KB

                                MD5

                                de71bf9cd980d4f4499af9b3683c41ab

                                SHA1

                                df9742172629df2c9c8ef622b03d05ac13fb6633

                                SHA256

                                ff2a7a75e6b4fd2383c6bd2118bbabb9441ed74335f4f05e441f89986b244c37

                                SHA512

                                fdf0db985742958048bae35697a7c2c58bdd9e173a4214a9a844108d1e0f2c3fe8c7c89294bd52713778931bea949e8defeca5085bff387c9c109a88adc08278

                              • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Local State

                                Filesize

                                129KB

                                MD5

                                9ac431d647830ea24c3cafcbe43b82b2

                                SHA1

                                c64cb59fdaaf1862382f159d21538756dd7a2f38

                                SHA256

                                d1b3fcaf9f3fe9f64719b3be91f2747119a71fb00d1ccd090cb3129d62848ea0

                                SHA512

                                ec1c35b0d78b2e7b424c94d1ef00b9c8171cf1b1b7e677853b57e4a9a191ce79c39e79da3acd0b98145ce2f65838fffc07513997bf64bf76d7181f7bfd89556b

                              • \??\pipe\crashpad_4536_LNXHAWPBXUHVLRPM

                                MD5

                                d41d8cd98f00b204e9800998ecf8427e

                                SHA1

                                da39a3ee5e6b4b0d3255bfef95601890afd80709

                                SHA256

                                e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

                                SHA512

                                cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e