Analysis

  • max time kernel
    44s
  • max time network
    48s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240214-en
  • resource tags

    arch:x64arch:x86image:win11-20240214-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    18-02-2024 18:32

General

  • Target

    7z2401-x64.exe

  • Size

    1.5MB

  • MD5

    de644b4e1086f1315c422f359133543b

  • SHA1

    54be86d121879b0e5d86604297c57a926d665fa8

  • SHA256

    17a507cce4066c4be7db53d64d9a9e11dfecfd4f2411393690506e591b5895cd

  • SHA512

    714d41254352d91834a4b648d613e9b4452b93b097b5781ec5bf3ec7c310a489d3a1c409b2f0a6946822b96f6943b579910d26a5f4324b320d485e856dbdcb1a

  • SSDEEP

    49152:8yEuRNRgYQYk6tC0tkaNuiXatTQY7quUncuTVyvn65:8yEoL7tCzlqLcuBz5

Malware Config

Signatures

  • Executes dropped EXE 1 IoCs
  • Registers COM server for autorun 1 TTPs 3 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Drops file in Program Files directory 64 IoCs
  • 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 20 IoCs
  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of FindShellTrayWindow 26 IoCs
  • Suspicious use of SendNotifyMessage 12 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\7z2401-x64.exe
    "C:\Users\Admin\AppData\Local\Temp\7z2401-x64.exe"
    1⤵
    • Registers COM server for autorun
    • Drops file in Program Files directory
    • Modifies registry class
    PID:2612
  • C:\Program Files\7-Zip\7zFM.exe
    "C:\Program Files\7-Zip\7zFM.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:572
    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --single-argument https://www.7-zip.org/
      2⤵
      • Enumerates system info in registry
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of WriteProcessMemory
      PID:3744
      • 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=90.0.4430.212 "--annotation=exe=C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --annotation=plat=Win64 "--annotation=prod=Microsoft Edge" --annotation=ver=90.0.818.66 --initial-client-data=0x100,0x104,0x108,0xdc,0x10c,0x7ffb8bca3cb8,0x7ffb8bca3cc8,0x7ffb8bca3cd8
        3⤵
          PID:3564
        • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
          "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=1904,1000448496542295653,1475827574857517081,131072 --gpu-preferences=SAAAAAAAAADgAAAwAAAAAAAAAAAAAAAAAABgAAAAAAAoAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAB4AAAAAAAAAHgAAAAAAAAAKAAAAAQAAAAgAAAAAAAAACgAAAAAAAAAMAAAAAAAAAA4AAAAAAAAABAAAAAAAAAAAAAAAAUAAAAQAAAAAAAAAAAAAAAGAAAAEAAAAAAAAAABAAAABQAAABAAAAAAAAAAAQAAAAYAAAAIAAAAAAAAAAgAAAAAAAAA --mojo-platform-channel-handle=1928 /prefetch:2
          3⤵
            PID:1672
          • 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=1904,1000448496542295653,1475827574857517081,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=2064 /prefetch:3
            3⤵
            • Suspicious behavior: EnumeratesProcesses
            PID:4260
          • 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=1904,1000448496542295653,1475827574857517081,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=2668 /prefetch:8
            3⤵
              PID:552
            • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
              "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=1904,1000448496542295653,1475827574857517081,131072 --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=3280 /prefetch:1
              3⤵
                PID:2404
              • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=1904,1000448496542295653,1475827574857517081,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=5 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=3292 /prefetch:1
                3⤵
                  PID:1960
                • 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=1904,1000448496542295653,1475827574857517081,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=2924 /prefetch:8
                  3⤵
                  • Suspicious behavior: EnumeratesProcesses
                  PID:2724
                • C:\Program Files (x86)\Microsoft\Edge\Application\90.0.818.66\identity_helper.exe
                  "C:\Program Files (x86)\Microsoft\Edge\Application\90.0.818.66\identity_helper.exe" --type=utility --utility-sub-type=winrt_app_id.mojom.WinrtAppIdService --field-trial-handle=1904,1000448496542295653,1475827574857517081,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=5456 /prefetch:8
                  3⤵
                  • Suspicious behavior: EnumeratesProcesses
                  PID:3520
            • C:\Windows\System32\CompPkgSrv.exe
              C:\Windows\System32\CompPkgSrv.exe -Embedding
              1⤵
                PID:4244
              • C:\Windows\System32\CompPkgSrv.exe
                C:\Windows\System32\CompPkgSrv.exe -Embedding
                1⤵
                  PID:1208

                Network

                MITRE ATT&CK Enterprise v15

                Replay Monitor

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                Downloads

                • C:\Program Files\7-Zip\7-zip.dll

                  Filesize

                  99KB

                  MD5

                  0bb139023eb3e17dedf9780a66e99a1a

                  SHA1

                  da841883ee156ffb2c1718e6aa20d30d4d578691

                  SHA256

                  0cdacb5eb70ca2b16ab333ee870983750103865fedb167c9d6068019b8197a4f

                  SHA512

                  ff9c15ac88bb233d9dd1dfb66a0dd9df5d87e7ae0ca282a6223fcd2ee69896056f330d9af6a4a7f913f9ed97b5bf77e8adfaa43270a7e39eaa91d039cb8f445d

                • C:\Program Files\7-Zip\7zFM.exe

                  Filesize

                  929KB

                  MD5

                  6156ebaea891ddbfcb1187f628ec7577

                  SHA1

                  778fd5d5dec21f95c5aa554567e06da8295b9a47

                  SHA256

                  4853947e14bf30ab40702c34f80fb113c45619a73f89a938f2284c786e35c9fe

                  SHA512

                  ed166095ceb46ff77e1081263aea03cb97b5d244a7e4060b6b37c847fd496a7e577f297846414ff130e01484f44f9da2566e2572c6cd69e9b419c311799a511a

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

                  Filesize

                  152B

                  MD5

                  90bbaa873cb1024ace83f887dfde38ae

                  SHA1

                  922416490e14f9098df969a56b75e7523f108e53

                  SHA256

                  2ff8abbbdad2acf5f04a3b47624055a0f2c36a09b0db3945b494f7eb92ae87bc

                  SHA512

                  60587031845ee5ae354c760bd2714a47ff561d3bd6e8aab7b2073d1b9c6b544c7eca94078d9cdefcd87b44adce4e814852c1e8f6af8ca3bdd5b0ddd0312e57b6

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

                  Filesize

                  5KB

                  MD5

                  c167c9e7436bf862b46b1485869a72f0

                  SHA1

                  f60be974d89346983b9fa73c1fe53da1d3c9780c

                  SHA256

                  e5bc3bcca170e8a5b1f701c2dc5a2b460647463368002690f6b8386912a5c39a

                  SHA512

                  3d880f89b17a1342d7812a9dfe65b41e057193801f9846197aa27e80d9bac8e365532a5a92247791ebf3a6dd87f9bd0ec8c2405b63cdfffaabc6e226e52206e0

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

                  Filesize

                  5KB

                  MD5

                  32cd64b301486e317c484b6f7ba05f34

                  SHA1

                  7a10d281e4d410c709b2fbed70bb448219631b16

                  SHA256

                  1114c45338d8d16089fca8ea65bdc53a541b9e77178a18e85567cde8cba24aed

                  SHA512

                  a9e40894c9e11af7b6908ea17ac39394f1ab03f3cd4b175de9b59654917ff008e735cf447e6f1d17ec755014c09e67f4f94c9d2f9401d7f6b90a206586b411be

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

                  Filesize

                  6KB

                  MD5

                  1b2f087f643b526693d79cea92fb300e

                  SHA1

                  f2700e196f26f98fb6b4381ad214fdc0a259659c

                  SHA256

                  30885a2408153e9633b275b2f7a3b69ad4d1a2745e73c822b90ce6e323d28355

                  SHA512

                  0a340f94f56ff0ab1a8cd556c0b70fdcb760eb26afb66a291048cce09a1ee78acea610c51a348d36753b542a5bbf55fd558acdfaa87bf0a016014f27f3f93f91

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

                  Filesize

                  25KB

                  MD5

                  e67bdf1ce87505d2ce006e9133777507

                  SHA1

                  fd48fce929f03f4940249ed8eb97acf65d1ca3ca

                  SHA256

                  8e8b5ec847137c2ebd16688b2d4c1ad6d4b3cc3dbbbd0d072492b4b4d06d3edd

                  SHA512

                  b2eea8dfc5994cc58173ca28fde492acf4899e6f87f1cd85a90e4b4b71b442ee30b2d1fd07c3c22c0a47320bcf0304cf0232285a04ec24420ff4771848d6a706

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

                  Filesize

                  16B

                  MD5

                  46295cac801e5d4857d09837238a6394

                  SHA1

                  44e0fa1b517dbf802b18faf0785eeea6ac51594b

                  SHA256

                  0f1bad70c7bd1e0a69562853ec529355462fcd0423263a3d39d6d0d70b780443

                  SHA512

                  8969402593f927350e2ceb4b5bc2a277f3754697c1961e3d6237da322257fbab42909e1a742e22223447f3a4805f8d8ef525432a7c3515a549e984d3eff72b23

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

                  Filesize

                  16B

                  MD5

                  206702161f94c5cd39fadd03f4014d98

                  SHA1

                  bd8bfc144fb5326d21bd1531523d9fb50e1b600a

                  SHA256

                  1005a525006f148c86efcbfb36c6eac091b311532448010f70f7de9a68007167

                  SHA512

                  0af09f26941b11991c750d1a2b525c39a8970900e98cba96fd1b55dbf93fee79e18b8aab258f48b4f7bda40d059629bc7770d84371235cdb1352a4f17f80e145

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

                  Filesize

                  10KB

                  MD5

                  e8838a39f661348f3e2966f0c054962f

                  SHA1

                  175b7aacfbec1afcbd000d9949796b6a7640ba20

                  SHA256

                  a386a235129b1d400c5eba37fa4aadf8151e1528cdd894e4f6df6b535e21578b

                  SHA512

                  c14f6db621b469cf319a74f65362deca34f1f4bae6a3c42fd736aae77ed586a60b764d732ee03d4230688922c3cfe5b9a5a051af2b5d233eb5598fad2c779fef

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

                  Filesize

                  10KB

                  MD5

                  44da2f302b1afb35da768ba83f6d1c6f

                  SHA1

                  a9f2c4de37190839357f6f73ff8ff669a88957de

                  SHA256

                  20d7813022a5d49c25bdb162feef510b4967f8f10d1fc07c5b8995f444221626

                  SHA512

                  19178e81078389b85f711b00007ae5e683cd4932e3de3abd65e172c7e74e90d856b4a64720e7813d0a0c752326cc9991bbfd092d08d03aba02ba78a22cffb8d9