Analysis

  • max time kernel
    63s
  • max time network
    64s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240611-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
  • submitted
    19-06-2024 09:07

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 registry class 64 IoCs
  • Opens file in notepad (likely ransom note) 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 3 IoCs
  • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 10 IoCs
  • Suspicious use of FindShellTrayWindow 25 IoCs
  • Suspicious use of SendNotifyMessage 24 IoCs
  • Suspicious use of SetWindowsHookEx 19 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:3156
  • C:\Windows\system32\OpenWith.exe
    C:\Windows\system32\OpenWith.exe -Embedding
    1⤵
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:440
    • 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:3308
  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --profile-directory=Default
    1⤵
    • Enumerates system info in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:1636
    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=crashpad-handler "--user-data-dir=C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data" /prefetch:7 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad" "--metrics-dir=C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data" --annotation=IsOfficialBuild=1 --annotation=channel= --annotation=chromium-version=92.0.4515.131 "--annotation=exe=C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --annotation=plat=Win64 "--annotation=prod=Microsoft Edge" --annotation=ver=92.0.902.67 --initial-client-data=0x100,0x104,0x108,0xd8,0x10c,0x7ff990cf46f8,0x7ff990cf4708,0x7ff990cf4718
      2⤵
        PID:3352
      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=2136,1429306421024956705,6484141660692114660,131072 --gpu-preferences=UAAAAAAAAADgAAAQAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHgAAAAAAAAAeAAAAAAAAAAoAAAABAAAACAAAAAAAAAAKAAAAAAAAAAwAAAAAAAAADgAAAAAAAAAEAAAAAAAAAAAAAAADQAAABAAAAAAAAAAAQAAAA0AAAAQAAAAAAAAAAQAAAANAAAAEAAAAAAAAAAHAAAADQAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=2148 /prefetch:2
        2⤵
          PID:932
        • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
          "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --field-trial-handle=2136,1429306421024956705,6484141660692114660,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=2200 /prefetch:3
          2⤵
          • Suspicious behavior: EnumeratesProcesses
          PID:4776
        • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
          "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=storage.mojom.StorageService --field-trial-handle=2136,1429306421024956705,6484141660692114660,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=2992 /prefetch:8
          2⤵
            PID:1736
          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
            "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2136,1429306421024956705,6484141660692114660,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=6 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=3388 /prefetch:1
            2⤵
              PID:3296
            • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
              "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2136,1429306421024956705,6484141660692114660,131072 --lang=en-US --disable-client-side-phishing-detection --instant-process --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=5 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=3420 /prefetch:1
              2⤵
                PID:3344
              • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2136,1429306421024956705,6484141660692114660,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=7 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=4280 /prefetch:1
                2⤵
                  PID:4640
                • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2136,1429306421024956705,6484141660692114660,131072 --lang=en-US --disable-client-side-phishing-detection --instant-process --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=8 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=3804 /prefetch:1
                  2⤵
                    PID:4752
                  • C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\identity_helper.exe
                    "C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\identity_helper.exe" --type=utility --utility-sub-type=winrt_app_id.mojom.WinrtAppIdService --field-trial-handle=2136,1429306421024956705,6484141660692114660,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=3760 /prefetch:8
                    2⤵
                      PID:2084
                    • C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\identity_helper.exe
                      "C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\identity_helper.exe" --type=utility --utility-sub-type=winrt_app_id.mojom.WinrtAppIdService --field-trial-handle=2136,1429306421024956705,6484141660692114660,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=3760 /prefetch:8
                      2⤵
                      • Suspicious behavior: EnumeratesProcesses
                      PID:1672
                    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2136,1429306421024956705,6484141660692114660,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=10 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=4076 /prefetch:1
                      2⤵
                        PID:3388
                      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2136,1429306421024956705,6484141660692114660,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=11 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5628 /prefetch:1
                        2⤵
                          PID:2848
                        • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                          "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=chrome.mojom.UtilWin --field-trial-handle=2136,1429306421024956705,6484141660692114660,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=4068 /prefetch:8
                          2⤵
                          • Modifies registry class
                          • Suspicious behavior: EnumeratesProcesses
                          • Suspicious behavior: GetForegroundWindowSpam
                          • Suspicious use of SetWindowsHookEx
                          PID:3300
                        • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                          "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2136,1429306421024956705,6484141660692114660,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=13 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=3640 /prefetch:1
                          2⤵
                            PID:916
                          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                            "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2136,1429306421024956705,6484141660692114660,131072 --lang=en-US --disable-client-side-phishing-detection --instant-process --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=14 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5076 /prefetch:1
                            2⤵
                              PID:4540
                            • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                              "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2136,1429306421024956705,6484141660692114660,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=15 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5768 /prefetch:1
                              2⤵
                                PID:5252
                              • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                                "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2136,1429306421024956705,6484141660692114660,131072 --lang=en-US --disable-client-side-phishing-detection --instant-process --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=16 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5712 /prefetch:1
                                2⤵
                                  PID:5260
                              • C:\Windows\System32\CompPkgSrv.exe
                                C:\Windows\System32\CompPkgSrv.exe -Embedding
                                1⤵
                                  PID:4356
                                • C:\Windows\System32\CompPkgSrv.exe
                                  C:\Windows\System32\CompPkgSrv.exe -Embedding
                                  1⤵
                                    PID:628

                                  Network

                                  MITRE ATT&CK Enterprise v15

                                  Replay Monitor

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                                  Downloads

                                  • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad\settings.dat

                                    Filesize

                                    152B

                                    MD5

                                    dabfafd78687947a9de64dd5b776d25f

                                    SHA1

                                    16084c74980dbad713f9d332091985808b436dea

                                    SHA256

                                    c7658f407cbe799282ef202e78319e489ed4e48e23f6d056b505bc0d73e34201

                                    SHA512

                                    dae1de5245cd9b72117c430250aa2029eb8df1b85dc414ac50152d8eba4d100bcf0320ac18446f865dc96949f8b06a5b9e7a0c84f9c1b0eada318e80f99f9d2b

                                  • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad\settings.dat

                                    Filesize

                                    152B

                                    MD5

                                    c39b3aa574c0c938c80eb263bb450311

                                    SHA1

                                    f4d11275b63f4f906be7a55ec6ca050c62c18c88

                                    SHA256

                                    66f8d413a30451055d4b6fa40e007197a4bb93a66a28ca4112967ec417ffab6c

                                    SHA512

                                    eeca2e21cd4d66835beb9812e26344c8695584253af397b06f378536ca797c3906a670ed239631729c96ebb93acfb16327cf58d517e83fb8923881c5fdb6d232

                                  • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Code Cache\js\index-dir\the-real-index

                                    Filesize

                                    288B

                                    MD5

                                    c8011a8d021160cd781b52027865501c

                                    SHA1

                                    3ff972c23957888a93de81ae908e90ed819df995

                                    SHA256

                                    4c1146d90fbf35a986ecb113bc3f02dd9ac497281ad213d0233ad3e7c7d6531e

                                    SHA512

                                    f104b0ec285caf2dee5ce3fd48df84004ca616b813f216e77e0790c14cfb34b837ed4de6a1a33df57390d11063e0ed060203b383b8aa3196eb3bfacad50af67b

                                  • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Preferences

                                    Filesize

                                    6KB

                                    MD5

                                    5b40b762f85879779e8e68bf9fbb2196

                                    SHA1

                                    acc3bf630f1a6e35321fd5b37f04ef1476931112

                                    SHA256

                                    497bce44d474b7be7ad8bdd7d955d45b8f56897f5dc0716dc208bc60061e57fa

                                    SHA512

                                    acc84b0135883346c38f5f24e7206e24d65a85067f55425331b702d78e5e659807082c4fc5955dc9ecd66b0fbda8a09294513db41bba546be8513920a77ba21c

                                  • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Preferences

                                    Filesize

                                    6KB

                                    MD5

                                    e6c6a37f3bcd90a7230c76832dcb9deb

                                    SHA1

                                    6ff2c439282bec74e6a0b7ac16f437b82fe4ffdc

                                    SHA256

                                    abf39003c13ff0cc76fe5bcb4d327e5bedb8b38a8c2ddcc03af7f4a10ea06cad

                                    SHA512

                                    b67ba3d9859c07cb985ccc98f80d13238abc6f0fe124d54656f81d4857a995b39acd2127fd4e84955febd58196a8a752e14b083bcc8c129a78dcb3fd8de71cfd

                                  • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Preferences

                                    Filesize

                                    6KB

                                    MD5

                                    7bff9b29e22ba4dbf75459f5eefd606c

                                    SHA1

                                    54e9f4424ead9b65c0a21213c76eb9ed0b33c5d1

                                    SHA256

                                    e3994f2a930d0dd32baeb6f3d86890a30b9cefef0f293b1e66cb70430984dc09

                                    SHA512

                                    1c4d7eeaab62ace5f5ae86f2a7c42470f01f881ac888bfffbf03e18f6785940e99bc8bb0c7c31248bd94b0a082a944bc2744d485e2dda081c139a29ca4bb7040

                                  • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\data_reduction_proxy_leveldb\CURRENT

                                    Filesize

                                    16B

                                    MD5

                                    6752a1d65b201c13b62ea44016eb221f

                                    SHA1

                                    58ecf154d01a62233ed7fb494ace3c3d4ffce08b

                                    SHA256

                                    0861415cada612ea5834d56e2cf1055d3e63979b69eb71d32ae9ae394d8306cd

                                    SHA512

                                    9cfd838d3fb570b44fc3461623ab2296123404c6c8f576b0de0aabd9a6020840d4c9125eb679ed384170dbcaac2fa30dc7fa9ee5b77d6df7c344a0aa030e0389

                                  • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Local State

                                    Filesize

                                    11KB

                                    MD5

                                    a8cc3633d4ca67204ba9d1a7def13283

                                    SHA1

                                    f067fb66d74f372357c741387c63486d0eb47c9b

                                    SHA256

                                    322f9fa74a39ee829dffb6438532d21ac3e4929b326280d8f45c3ed9a7d55190

                                    SHA512

                                    eb34d031d1488ee8eb96daa48a1b088bbb5c8b9451d68c7393046e75fe6ce1fa04b93024ba5288dbeb9404f415a2d695dae90119becc7cc73071de76bf111865

                                  • C:\Users\Admin\Downloads\cch_blum_re.pyc.txt

                                    Filesize

                                    7KB

                                    MD5

                                    6d127e45ab3488937ae0040e31d3655e

                                    SHA1

                                    8ebed63e7b5c8c33b19164393dcbcef3176960ee

                                    SHA256

                                    43f5a729d9577003961847f8914281b672b07b8719b09e3be6b72b509c0a6027

                                    SHA512

                                    a2fda10d0c44b1567ec68d305bc62baef50a65208d8cf14a7190a79b79537a34270f1216f0ba9c5fd1f415e31cd7cf155879d527f85be7fa4500aa343877898b

                                  • \??\pipe\LOCAL\crashpad_1636_OAAEDHITPMLIPPBK

                                    MD5

                                    d41d8cd98f00b204e9800998ecf8427e

                                    SHA1

                                    da39a3ee5e6b4b0d3255bfef95601890afd80709

                                    SHA256

                                    e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

                                    SHA512

                                    cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e