Analysis

  • max time kernel
    135s
  • max time network
    129s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04-06-2024 22:30

General

  • Target

    EML246970139981.vbs

  • Size

    10KB

  • MD5

    fb02e84625878e362aae3fd352fc19eb

  • SHA1

    20301d9a3c22269e328170384b105041feae19d0

  • SHA256

    f7168df8b023f2f40e865f8309367c97d7b48d4d9a7cab408af377ed7e4d42a2

  • SHA512

    c4fae6bc5a991449a6c664e0afa91f6a426ab3e7c8440330ca0c86c1bd1534e48361412be6861ebcb2fe060eb68735a9642664ce9284c4c740d83042903a1669

  • SSDEEP

    192:5taGo3X3QHE4pG6/IGx/GGPGQGqGuG7o+e5hlQrEuLMd5ybyEgdh:5I3HQKdeXlQrEuLMdUeh

Malware Config

Signatures

  • Locky

    Ransomware strain released in 2016, with advanced features like anti-analysis.

  • Deletes shadow copies 3 TTPs

    Ransomware often targets backup files to inhibit system recovery.

  • Blocklisted process makes network request 1 IoCs
  • Downloads MZ/PE file
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 1 IoCs
  • Sets desktop wallpaper using registry 2 TTPs 1 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
  • Interacts with shadow copies 2 TTPs 1 IoCs

    Shadow copies are often targeted by ransomware to inhibit system recovery.

  • Modifies Control Panel 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of FindShellTrayWindow 25 IoCs
  • Suspicious use of SendNotifyMessage 24 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs
  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

Processes

  • C:\Windows\System32\WScript.exe
    "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\EML246970139981.vbs"
    1⤵
    • Blocklisted process makes network request
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4168
    • C:\Users\Admin\AppData\Local\Temp\EItVNciJKv.exe
      "C:\Users\Admin\AppData\Local\Temp\EItVNciJKv.exe"
      2⤵
      • Executes dropped EXE
      • Sets desktop wallpaper using registry
      • Modifies Control Panel
      • Suspicious use of WriteProcessMemory
      PID:5004
      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --single-argument C:\Users\Admin\Desktop\ykcol.htm
        3⤵
        • Enumerates system info in registry
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        • Suspicious use of WriteProcessMemory
        PID:2396
        • 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=0xfc,0x100,0x104,0xd8,0x108,0x7ff8b82346f8,0x7ff8b8234708,0x7ff8b8234718
          4⤵
            PID:3968
          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
            "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=2072,14700073759280018549,8795349899394315514,131072 --gpu-preferences=UAAAAAAAAADgAAAQAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHgAAAAAAAAAeAAAAAAAAAAoAAAABAAAACAAAAAAAAAAKAAAAAAAAAAwAAAAAAAAADgAAAAAAAAAEAAAAAAAAAAAAAAADQAAABAAAAAAAAAAAQAAAA0AAAAQAAAAAAAAAAQAAAANAAAAEAAAAAAAAAAHAAAADQAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=2096 /prefetch:2
            4⤵
              PID:3976
            • 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=2072,14700073759280018549,8795349899394315514,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=2160 /prefetch:3
              4⤵
              • Suspicious behavior: EnumeratesProcesses
              PID:2540
            • 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=2072,14700073759280018549,8795349899394315514,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=2844 /prefetch:8
              4⤵
                PID:2256
              • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2072,14700073759280018549,8795349899394315514,131072 --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=3256 /prefetch:1
                4⤵
                  PID:3152
                • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2072,14700073759280018549,8795349899394315514,131072 --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=3296 /prefetch:1
                  4⤵
                    PID:1620
                  • 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=2072,14700073759280018549,8795349899394315514,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=5140 /prefetch:8
                    4⤵
                      PID:4340
                    • 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=2072,14700073759280018549,8795349899394315514,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=5140 /prefetch:8
                      4⤵
                      • Suspicious behavior: EnumeratesProcesses
                      PID:3552
                    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2072,14700073759280018549,8795349899394315514,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=8 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5136 /prefetch:1
                      4⤵
                        PID:688
                      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2072,14700073759280018549,8795349899394315514,131072 --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=9 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=4764 /prefetch:1
                        4⤵
                          PID:4892
                        • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                          "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2072,14700073759280018549,8795349899394315514,131072 --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=3316 /prefetch:1
                          4⤵
                            PID:2872
                          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                            "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2072,14700073759280018549,8795349899394315514,131072 --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=11 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5540 /prefetch:1
                            4⤵
                              PID:1844
                          • C:\Windows\SysWOW64\cmd.exe
                            cmd.exe /C del /Q /F "C:\Users\Admin\AppData\Local\Temp\EItVNciJKv.exe"
                            3⤵
                              PID:3064
                        • C:\Windows\system32\vssvc.exe
                          C:\Windows\system32\vssvc.exe
                          1⤵
                          • Suspicious use of AdjustPrivilegeToken
                          PID:3612
                        • C:\Windows\system32\vssadmin.exe
                          C:\Windows\system32\vssadmin.exe Delete Shadows /Quiet /All
                          1⤵
                          • Interacts with shadow copies
                          PID:3300
                        • C:\Windows\System32\CompPkgSrv.exe
                          C:\Windows\System32\CompPkgSrv.exe -Embedding
                          1⤵
                            PID:2780
                          • C:\Windows\System32\CompPkgSrv.exe
                            C:\Windows\System32\CompPkgSrv.exe -Embedding
                            1⤵
                              PID:956

                            Network

                            MITRE ATT&CK Enterprise v15

                            Replay Monitor

                            Loading Replay Monitor...

                            Downloads

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

                              Filesize

                              152B

                              MD5

                              ea98e583ad99df195d29aa066204ab56

                              SHA1

                              f89398664af0179641aa0138b337097b617cb2db

                              SHA256

                              a7abb51435909fa2d75c6f2ff5c69a93d4a0ab276ed579e7d8733b2a63ffbee6

                              SHA512

                              e109be3466e653e5d310b3e402e1626298b09205d223722a82344dd78504f3c33e1e24e8402a02f38cd2c9c50d96a303ce4846bea5a583423937ab018cd5782f

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

                              Filesize

                              152B

                              MD5

                              4f7152bc5a1a715ef481e37d1c791959

                              SHA1

                              c8a1ed674c62ae4f45519f90a8cc5a81eff3a6d7

                              SHA256

                              704dd4f98d8ca34ec421f23ba1891b178c23c14b3301e4655efc5c02d356c2bc

                              SHA512

                              2e6b02ca35d76a655a17a5f3e9dbd8d7517c7dae24f0095c7350eb9e7bdf9e1256a7009aa8878f96c89d1ea4fe5323a41f72b8c551806dda62880d7ff231ff5c

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

                              Filesize

                              5KB

                              MD5

                              bad026c24262bc7229beeddcecf6bc6e

                              SHA1

                              06a92c6af053f818468334e896491e851df9fdd9

                              SHA256

                              6cc751579ca5b07f9bef2acbf77f5e260ac74967e0b8584fd32e0f236f41fba7

                              SHA512

                              6f890baa528759963e1d42cc87b89123d0271937479dae5dbb8b9a0bdf11f99da849be801a20cb1ec5736130040dc5151702b25cd4c3966492d585fce4967600

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

                              Filesize

                              6KB

                              MD5

                              ffc8315339a7cb7c53160d248f88fef4

                              SHA1

                              48522d67818faa291463740d27e8b55f3fae771c

                              SHA256

                              a7994b12db4d50fccb312750030bf570e7b2d5c3f9e26e9c022a3b3f3ba979be

                              SHA512

                              7733deb9ce04542da33b362b3678cb8b7ea9a6c047056e090b6363b95dc95f12346cb8e7261dea14eeb9d1ec16a76c69fcabc927c060dbb9521f4d596b8ab215

                            • 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

                              10KB

                              MD5

                              995d79cc760ba8d3deb005d18182f97b

                              SHA1

                              0fa9ed623b87bb7d7fdee322b21ec8e4fddf949c

                              SHA256

                              0d875431600a3974d836813fa09a93c06c9ac9f459e841f2ccd0e8dda8db8917

                              SHA512

                              4491cc4b455925b86ec8842e0a8a2bf30464650c50bc334375a4689e50b3a6a605c7c34d30c6e07fbfece73acd86b440aa244db8a98e8db1349f5e36447c43da

                            • C:\Users\Admin\AppData\Local\Temp\EItVNciJKv.exe

                              Filesize

                              576KB

                              MD5

                              f62e0d79f8f442903fd5f4f5e9bc47ee

                              SHA1

                              1f735d691e92301fe06447028f92949bf385301b

                              SHA256

                              8a58444a95e38acdb229aa1fcbfe207e685d1fb095b4915b7e85ea37a940bab0

                              SHA512

                              fb4dd2e38e8156b92757d48eabd037a505c96308eb924d5e44e3f84eef8922d4458c1badc269fa35e18da23c5886bb5fe89f30dc4559155d7da578a7e97a4a8d

                            • C:\Users\Default\ykcol-6e7f.htm

                              Filesize

                              9KB

                              MD5

                              2bfb9ba64df59431bba2b74d194ed17e

                              SHA1

                              dc9dba0290e1a1060d9301cc5501e246724338b8

                              SHA256

                              7fa7e46364553435c506fb06c164b1ae883ca81e32f6330af9035024714971b4

                              SHA512

                              02567b4a78dccd4bc78c7796d183373cb964e6c08f23b277781417896503aa37d37ed38cd207c889b611c1fafd46004e34e97556051313818005c25456e0c232

                            • \??\pipe\LOCAL\crashpad_2396_LQUJTXFYTDJVEZBA

                              MD5

                              d41d8cd98f00b204e9800998ecf8427e

                              SHA1

                              da39a3ee5e6b4b0d3255bfef95601890afd80709

                              SHA256

                              e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

                              SHA512

                              cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

                            • memory/5004-12-0x0000000000680000-0x0000000000681000-memory.dmp

                              Filesize

                              4KB

                            • memory/5004-288-0x0000000000400000-0x0000000000493000-memory.dmp

                              Filesize

                              588KB

                            • memory/5004-29-0x0000000000400000-0x0000000000493000-memory.dmp

                              Filesize

                              588KB

                            • memory/5004-15-0x0000000000400000-0x0000000000493000-memory.dmp

                              Filesize

                              588KB

                            • memory/5004-14-0x0000000000400000-0x0000000000493000-memory.dmp

                              Filesize

                              588KB

                            • memory/5004-11-0x0000000000400000-0x0000000000493000-memory.dmp

                              Filesize

                              588KB

                            • memory/5004-13-0x0000000000690000-0x0000000000691000-memory.dmp

                              Filesize

                              4KB

                            • memory/5004-10-0x0000000000400000-0x0000000000493000-memory.dmp

                              Filesize

                              588KB

                            • memory/5004-9-0x0000000000400000-0x0000000000493000-memory.dmp

                              Filesize

                              588KB