Analysis

  • max time kernel
    71s
  • max time network
    73s
  • platform
    windows7_x64
  • resource
    win7-20230220-en
  • resource tags

    arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
  • submitted
    09/05/2023, 21:48

General

  • Target

    PolarZ.dll

  • Size

    2.2MB

  • MD5

    1354771131052195620da761fc562675

  • SHA1

    9956c18cecb6cb5c5fdffb19a22f950f4fe29d52

  • SHA256

    dd64b560c1782039e420d2d22d51c77769d58bbf2326c0fb63c810cd4ab1a287

  • SHA512

    704d7d9c16cec9b7a828aca600520567b76c78ee57eeeb3271fcfa917fa7705f3168e850f3f542123a189d421d3f703a4ef551231ab32bd00e1805a1ebd41372

  • SSDEEP

    49152:bRAv//AGqXi0dCkqKOjZIm/wsuA2eFfUxwgo8+q1g8r0JNaSyETyd:bRAv//AGxcmt/

Score
6/10

Malware Config

Signatures

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Program crash 1 IoCs
  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 35 IoCs
  • Suspicious use of SendNotifyMessage 32 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\PolarZ.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2000
    • C:\Windows\system32\WerFault.exe
      C:\Windows\system32\WerFault.exe -u -p 2000 -s 212
      2⤵
      • Program crash
      PID:1760
  • C:\Program Files\Google\Chrome\Application\chrome.exe
    "C:\Program Files\Google\Chrome\Application\chrome.exe"
    1⤵
    • Adds Run key to start application
    • Enumerates system info in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:1496
    • 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=106.0.5249.119 --initial-client-data=0xc0,0xc4,0xc8,0x94,0xcc,0x7fefb059758,0x7fefb059768,0x7fefb059778
      2⤵
        PID:1268
      • 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=1216 --field-trial-handle=1372,i,10813205629963174875,3402220285165858725,131072 /prefetch:2
        2⤵
          PID:848
        • 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=1528 --field-trial-handle=1372,i,10813205629963174875,3402220285165858725,131072 /prefetch:8
          2⤵
            PID:656
          • 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=utility --mojo-platform-channel-handle=1584 --field-trial-handle=1372,i,10813205629963174875,3402220285165858725,131072 /prefetch:8
            2⤵
              PID:1940
            • C:\Program Files\Google\Chrome\Application\chrome.exe
              "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --enable-chrome-cart --first-renderer-process --lang=en-US --device-scale-factor=1 --num-raster-threads=2 --enable-main-frame-before-activation --renderer-client-id=6 --mojo-platform-channel-handle=2260 --field-trial-handle=1372,i,10813205629963174875,3402220285165858725,131072 /prefetch:1
              2⤵
                PID:1036
              • C:\Program Files\Google\Chrome\Application\chrome.exe
                "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --enable-chrome-cart --lang=en-US --device-scale-factor=1 --num-raster-threads=2 --enable-main-frame-before-activation --renderer-client-id=5 --mojo-platform-channel-handle=2292 --field-trial-handle=1372,i,10813205629963174875,3402220285165858725,131072 /prefetch:1
                2⤵
                  PID:524
                • C:\Program Files\Google\Chrome\Application\chrome.exe
                  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=gpu-process --gpu-preferences=UAAAAAAAAADgAAAYAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAQAAAAAAAAAAAAAAAAAAAAAAAAAEgAAAAAAAAASAAAAAAAAAAYAAAAAgAAABAAAAAAAAAAGAAAAAAAAAAQAAAAAAAAAAAAAAAOAAAAEAAAAAAAAAABAAAADgAAAAgAAAAAAAAACAAAAAAAAAA= --use-gl=angle --use-angle=swiftshader-webgl --mojo-platform-channel-handle=1512 --field-trial-handle=1372,i,10813205629963174875,3402220285165858725,131072 /prefetch:2
                  2⤵
                    PID:1576
                  • C:\Program Files\Google\Chrome\Application\chrome.exe
                    "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --enable-chrome-cart --disable-gpu-compositing --lang=en-US --device-scale-factor=1 --num-raster-threads=2 --enable-main-frame-before-activation --renderer-client-id=8 --mojo-platform-channel-handle=1212 --field-trial-handle=1372,i,10813205629963174875,3402220285165858725,131072 /prefetch:1
                    2⤵
                      PID:2064
                    • C:\Program Files\Google\Chrome\Application\chrome.exe
                      "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=data_decoder.mojom.DataDecoderService --lang=en-US --service-sandbox-type=service --mojo-platform-channel-handle=1376 --field-trial-handle=1372,i,10813205629963174875,3402220285165858725,131072 /prefetch:8
                      2⤵
                        PID:2092
                      • C:\Program Files\Google\Chrome\Application\chrome.exe
                        "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=data_decoder.mojom.DataDecoderService --lang=en-US --service-sandbox-type=service --mojo-platform-channel-handle=4000 --field-trial-handle=1372,i,10813205629963174875,3402220285165858725,131072 /prefetch:8
                        2⤵
                          PID:2100
                        • C:\Program Files\Google\Chrome\Application\chrome.exe
                          "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --enable-chrome-cart --disable-gpu-compositing --lang=en-US --device-scale-factor=1 --num-raster-threads=2 --enable-main-frame-before-activation --renderer-client-id=11 --mojo-platform-channel-handle=3876 --field-trial-handle=1372,i,10813205629963174875,3402220285165858725,131072 /prefetch:1
                          2⤵
                            PID:2260
                          • C:\Program Files\Google\Chrome\Application\chrome.exe
                            "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --enable-chrome-cart --disable-gpu-compositing --lang=en-US --device-scale-factor=1 --num-raster-threads=2 --enable-main-frame-before-activation --renderer-client-id=12 --mojo-platform-channel-handle=3216 --field-trial-handle=1372,i,10813205629963174875,3402220285165858725,131072 /prefetch:1
                            2⤵
                              PID:2456
                          • C:\Program Files\Google\Chrome\Application\106.0.5249.119\elevation_service.exe
                            "C:\Program Files\Google\Chrome\Application\106.0.5249.119\elevation_service.exe"
                            1⤵
                              PID:1704

                            Network

                                  MITRE ATT&CK Enterprise v6

                                  Replay Monitor

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                                  Downloads

                                  • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\0b586ba6-0163-4258-ae15-79584410dd32.tmp

                                    Filesize

                                    149KB

                                    MD5

                                    ff876ed562422b2708a367210600bfc6

                                    SHA1

                                    9b4eb8d2cd5e8d46465731a97280eee4409478de

                                    SHA256

                                    e4d63e52e038902f26ab6f3ed71d16ad0f8fe92f4dc7d539ac5cb4f713c8bdd4

                                    SHA512

                                    66366f75b8053271d178180a7f3e64583fd2ff8d4f9b46def54aa61c0f6d21bd77ab6798ce8728db7543f5c43e1b089b09bd097d11ce950906a5e601044b6969

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

                                    Filesize

                                    144B

                                    MD5

                                    dd1e5696266c85fae0edef8b5dee0553

                                    SHA1

                                    09be52ac7d026e0d01f5cf5e11f6dde9e5662823

                                    SHA256

                                    2a62d5af04707c1d8258bf0abade805e5c42725f842ed4bdfad475caee2629e4

                                    SHA512

                                    7207b9b6c2a25cf6b06c27fc2aad87c22bc00b2b39a02983c456fd06c9b93eadf6fe6c6ed61d14b2ea12df85fff4420e9ee560fd2ecfe5de774d5835a49740fa

                                  • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\GPUCache\data_1

                                    Filesize

                                    264KB

                                    MD5

                                    f50f89a0a91564d0b8a211f8921aa7de

                                    SHA1

                                    112403a17dd69d5b9018b8cede023cb3b54eab7d

                                    SHA256

                                    b1e963d702392fb7224786e7d56d43973e9b9efd1b89c17814d7c558ffc0cdec

                                    SHA512

                                    bf8cda48cf1ec4e73f0dd1d4fa5562af1836120214edb74957430cd3e4a2783e801fa3f4ed2afb375257caeed4abe958265237d6e0aacf35a9ede7a2e8898d58

                                  • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Local Storage\leveldb\000004.dbtmp

                                    Filesize

                                    16B

                                    MD5

                                    6752a1d65b201c13b62ea44016eb221f

                                    SHA1

                                    58ecf154d01a62233ed7fb494ace3c3d4ffce08b

                                    SHA256

                                    0861415cada612ea5834d56e2cf1055d3e63979b69eb71d32ae9ae394d8306cd

                                    SHA512

                                    9cfd838d3fb570b44fc3461623ab2296123404c6c8f576b0de0aabd9a6020840d4c9125eb679ed384170dbcaac2fa30dc7fa9ee5b77d6df7c344a0aa030e0389

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

                                    Filesize

                                    527B

                                    MD5

                                    990fd0700699acc2a7e0699a457b0160

                                    SHA1

                                    d7b86044d886d2e21ed18d5de99d91fb6fdb364a

                                    SHA256

                                    0cc1f124e56cdb131e49222f5d80ac2f3d57a50dd36f932da11a621940bfd4a5

                                    SHA512

                                    28a4dcd511fc1e96a7c151c32376ddf0e3fe371d8c14a9e8d8eb8eb1049336d5dca3e070748e6eba48dc354e94741375a7707ca49740e28c98415af011c67950

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

                                    Filesize

                                    4KB

                                    MD5

                                    2c103a8cf5702ec4ff2348d7d00d9fba

                                    SHA1

                                    684c462bcc2ecec7e693eb563ca4b2504f351d2b

                                    SHA256

                                    d2650d657c44b211febd4c3f74900b6f5656b64043f67cd04e1d869d877e485e

                                    SHA512

                                    9fa82cd396b82dca385544bde212a37716c118e198d25dae10fd7ce22fcfc18cba4b3cb148113414077c42961970e82a5d516f8d377a8222bac8cfbf2081b22d

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

                                    Filesize

                                    4KB

                                    MD5

                                    fd68856f634f436103f2b682cdf901f2

                                    SHA1

                                    d59aea34cf01bfa300f3df90981fa32f2b50eec7

                                    SHA256

                                    46911873596b171892dec41f42d71f0af99baddc7edada0962ab25a152d07e3a

                                    SHA512

                                    dd4bb7b8c65f9e3ad4b1de74893ff4d1380a23bf341e2664466f1e449a1c0dfb46d50445deb146c5ef59cac0a9d8d85737974c70e16d6d0183f18d63a01174bb

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

                                    Filesize

                                    149KB

                                    MD5

                                    67b0b41e230d2d719a9551fb6c7fcabd

                                    SHA1

                                    07a8fd7f7fb873ed0a509f87d7ab17ec5834af10

                                    SHA256

                                    2a755878f5f972f8d99b52f11113120059f9ebddbaa26e25fa3ff10906a8151a

                                    SHA512

                                    db87cc694a585c971b6f3e662a202783e314956a8cae9a1b72787180a362ea290bfa6ff7b8225785a5b244d87054b3d03da04b3e10fe43a387e148a4894f4319