Resubmissions

15-06-2023 13:39

230615-qx8z5ahd71 7

14-06-2023 11:43

230614-nvn6tsgb87 7

Analysis

  • max time kernel
    134s
  • max time network
    151s
  • platform
    windows7_x64
  • resource
    win7-20230220-en
  • resource tags

    arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
  • submitted
    15-06-2023 13:39

General

  • Target

    cves_windows.exe

  • Size

    5.8MB

  • MD5

    41319760577a0df3145bceb010914526

  • SHA1

    7b4828371f8d0fb7d564757f8c66197a77c3007c

  • SHA256

    777c9220670025a487f4e853987df0482fbd545189137d58a60d4ab37c1cfbb4

  • SHA512

    67aa1638ae3661ebceebede54116372fa9a3dfa59a2106f59c031530e731c258edb1bc2aec55d83b93f52fe84683030ecea23e91b36beeacc5f5526980a96971

  • SSDEEP

    49152:qfUoYl63WYrb/TbvO90d7HjmAFd4A64nsfJBAmZgfk7bJsbsSQOUmzjkbsG0oq+Y:63WvAlJQSG0oGREmT

Score
7/10

Malware Config

Signatures

  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 6 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Drops file in Program Files directory 9 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Checks processor information in registry 2 TTPs 6 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Modifies system certificate store 2 TTPs 6 IoCs
  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 40 IoCs
  • Suspicious use of WriteProcessMemory 18 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

Processes

  • C:\Users\Admin\AppData\Local\Temp\cves_windows.exe
    "C:\Users\Admin\AppData\Local\Temp\cves_windows.exe"
    1⤵
    • Drops file in Program Files directory
    • Checks processor information in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1208
    • C:\Windows\system32\schtasks.exe
      C:\Windows\system32\schtasks.exe /CREATE /XML C:\Users\Admin\AppData\Local\Temp\UWxmGLbNnCM /F /TN ChromeUpdateTaskMachinCore
      2⤵
      • Creates scheduled task(s)
      PID:2044
    • C:\Windows\System32\cmd.exe
      C:\Windows\System32\cmd.exe /c "C:\Program Files\ChromeUpdateTaskMachinCore\ChromeUpdateTaskMachinCore.exe"
      2⤵
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:1052
      • C:\Program Files\ChromeUpdateTaskMachinCore\ChromeUpdateTaskMachinCore.exe
        "C:\Program Files\ChromeUpdateTaskMachinCore\ChromeUpdateTaskMachinCore.exe"
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Drops file in Program Files directory
        • Checks processor information in registry
        • Modifies system certificate store
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of WriteProcessMemory
        PID:580
        • C:\Program Files\ChromeUpdateTaskMachinCore\ORsBHaReETgwnMypRf\tor\tor.exe
          "C:\Program Files\ChromeUpdateTaskMachinCore\ORsBHaReETgwnMypRf\tor\tor.exe" -f "C:\Program Files\ChromeUpdateTaskMachinCore\ORsBHaReETgwnMypRf\ORsBHaReETgwn"
          4⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • Drops file in Program Files directory
          • Suspicious use of WriteProcessMemory
          PID:1068
          • C:\Program Files\ChromeUpdateTaskMachinCore\ORsBHaReETgwnMypRf\tor\pluggable_transports\obfs4proxy.exe
            "C:\Program Files\ChromeUpdateTaskMachinCore\ORsBHaReETgwnMypRf\tor\pluggable_transports\obfs4proxy.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious behavior: EnumeratesProcesses
            PID:1596
        • C:\Windows\System32\wbem\WMIC.exe
          C:\Windows\System32\wbem\WMIC.exe computersystem get model,manufacturer
          4⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:240

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Program Files\ChromeUpdateTaskMachinCore\ChromeUpdateTaskMachinCore.exe

    Filesize

    5.8MB

    MD5

    41eb04151e6a51149856069b92e8781c

    SHA1

    91ad7bb1848454f59269cdda09b2748b1b8811a0

    SHA256

    68ce3b3f77075ca40ebaa5b7569e5360a1cfa2a8b0684262b02970fb349c52f2

    SHA512

    83f4b5adf7a4fbe729bd5ae3e3e3cdecf2c6cffaac7778e82d32ab56c138648f9467877e526d64bcc7ee9be8d3d686a7e0f2284102cfd735e2e0a5c62e06dad4

  • C:\Program Files\ChromeUpdateTaskMachinCore\ChromeUpdateTaskMachinCore.exe

    Filesize

    5.8MB

    MD5

    41eb04151e6a51149856069b92e8781c

    SHA1

    91ad7bb1848454f59269cdda09b2748b1b8811a0

    SHA256

    68ce3b3f77075ca40ebaa5b7569e5360a1cfa2a8b0684262b02970fb349c52f2

    SHA512

    83f4b5adf7a4fbe729bd5ae3e3e3cdecf2c6cffaac7778e82d32ab56c138648f9467877e526d64bcc7ee9be8d3d686a7e0f2284102cfd735e2e0a5c62e06dad4

  • C:\Program Files\ChromeUpdateTaskMachinCore\ORsBHaReETgwnMypRf\ORsBHaReETgwn

    Filesize

    1KB

    MD5

    1a8dee071b86b492e029d23850f41877

    SHA1

    7bf53fab2e89551ea51ac7e41ce3c1d30bfd51de

    SHA256

    5c1ef2e158195fc490f172c7489f8185d8b4e94454829166505c8b9e1ea9c1b5

    SHA512

    4fee823a2e4978ce803b1ba13a20ae6409f1785a3bda1e9aee8b2990a876a9890548d95f9c6c9438221a2f1e94483c1032d50809040bb265552de7daac30e1d8

  • C:\Program Files\ChromeUpdateTaskMachinCore\ORsBHaReETgwnMypRf\hostname

    Filesize

    64B

    MD5

    688dad6b13aa297419230143a878670d

    SHA1

    ff0d4974fa019274794a99ac57be2e12876eb460

    SHA256

    a84f2a262bb55e913cd990210314119bb93b6b02e86458ef9cf824d56c4f8363

    SHA512

    30637ccc923738981d0b482fe3a093c81b08a3e87a1c12d3d194d273da69de9c2ac3820110edc33a69ebe6ecbd4ff717365f145b50604dc3250a2779bb5cd19b

  • C:\Program Files\ChromeUpdateTaskMachinCore\ORsBHaReETgwnMypRf\tor\pluggable_transports\obfs4proxy.exe

    Filesize

    6.6MB

    MD5

    230e3602ebdd05dcf33121eac79d1dcd

    SHA1

    ff93876b412e8fb026fe4bc3105f177402d9e767

    SHA256

    df70d273c43901f7249294ed8f66479b9f5c994db6d0efbbb9b31ad6e8211a6d

    SHA512

    c7f107110f54129636d7ec78ba7ea23ac7ad0e0ace14ada0e1ca3ae66a7dee33c76a8d14ff1e3e945cc47e24e67d911b5ffef45374998383b5453b576d3fde05

  • C:\Program Files\ChromeUpdateTaskMachinCore\ORsBHaReETgwnMypRf\tor\pluggable_transports\obfs4proxy.exe

    Filesize

    6.6MB

    MD5

    230e3602ebdd05dcf33121eac79d1dcd

    SHA1

    ff93876b412e8fb026fe4bc3105f177402d9e767

    SHA256

    df70d273c43901f7249294ed8f66479b9f5c994db6d0efbbb9b31ad6e8211a6d

    SHA512

    c7f107110f54129636d7ec78ba7ea23ac7ad0e0ace14ada0e1ca3ae66a7dee33c76a8d14ff1e3e945cc47e24e67d911b5ffef45374998383b5453b576d3fde05

  • C:\Program Files\ChromeUpdateTaskMachinCore\ORsBHaReETgwnMypRf\tor\tor.exe

    Filesize

    7.4MB

    MD5

    bdce57b5d9974d1c6a75c4529e9f2e83

    SHA1

    bf5125b827a3f05103e1a480b225da8e7cea7049

    SHA256

    6663f24897889210b68f4fcbd86a74d65c25b54c171ce29009f92bf3a8e074b1

    SHA512

    5ea0a7aef154fc77c0a390352bbb1e035fc3814d22327c3338030fd5bd1968496943be02931bcf322e94899f95bf6549581d9f27c66f45d661f422e7bb0139c4

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015

    Filesize

    62KB

    MD5

    3ac860860707baaf32469fa7cc7c0192

    SHA1

    c33c2acdaba0e6fa41fd2f00f186804722477639

    SHA256

    d015145d551ecd14916270efad773bbc9fd57fad2228d2c24559f696c961d904

    SHA512

    d62ad2408c969a95550fb87efda50f988770ba5e39972041bf85924275baf156b8bec309ecc6409e5acdd37ec175dea40eff921ab58933b5b5b5d35a6147567c

  • C:\Users\Admin\AppData\Local\Temp\Cab26F4.tmp

    Filesize

    61KB

    MD5

    fc4666cbca561e864e7fdf883a9e6661

    SHA1

    2f8d6094c7a34bf12ea0bbf0d51ee9c5bb7939a5

    SHA256

    10f3deb6c452d749a7451b5d065f4c0449737e5ee8a44f4d15844b503141e65b

    SHA512

    c71f54b571e01f247f072be4bbebdf5d8410b67eb79a61e7e0d9853fe857ab9bd12f53e6af3394b935560178107291fc4be351b27deb388eba90ba949633d57d

  • C:\Users\Admin\AppData\Local\Temp\Tar29C9.tmp

    Filesize

    164KB

    MD5

    4ff65ad929cd9a367680e0e5b1c08166

    SHA1

    c0af0d4396bd1f15c45f39d3b849ba444233b3a2

    SHA256

    c8733c93cc5aaf5ca206d06af22ee8dbdec764fb5085019a6a9181feb9dfdee6

    SHA512

    f530dc0d024a5a3b8903ffaaa41b608a5ccdd6da4ba1949f2c2e55a9fca475fec5c8d2119b5763cabe7ef1c3788fb9dcac621869db51d65b1d83cfe404fb4c27

  • C:\Users\Admin\AppData\Local\Temp\UWxmGLbNnCM

    Filesize

    1KB

    MD5

    2ba9c3d7e012dbb3eb0e66b04c362066

    SHA1

    9ec5d1585cd5850de4a4c01a7e9791a5d203179a

    SHA256

    c553c291d148541d1c511357aa2c887552ede27d41f3ce7152554e245762607b

    SHA512

    1ff35330df30e113553b57e4add48a1337d01b6ff118dc775d6c987f2492ec02d621288d49cb8450a26289e46988b3e7be13aef8b36df4b395888b5007ef1f9f

  • C:\Users\Admin\AppData\Roaming\tor\cached-descriptors.new

    Filesize

    13KB

    MD5

    18c170f5e84aa3d4f22978c1701b4cdf

    SHA1

    4c2d921a92398a3fcbb1107d99beb16976e41aa0

    SHA256

    a2df1469f6c761c77e9ff3a49d4604ae0de6ea95138a941ec6475742f82e4f15

    SHA512

    fcd3b3bae9bc59a8e2aeabcca9c94adb51258143c893c4efbee73cb2395c5abab750223222e01c8bcfc257c73f41974b7c07a01348a6b9e49eb6c29aab09e121

  • C:\Users\Admin\AppData\Roaming\tor\cached-microdesc-consensus.tmp

    Filesize

    2.3MB

    MD5

    c7fb02ab0dd667c112847537d3127230

    SHA1

    f89e42cbd485144ddcd534c4d990d13006ebd983

    SHA256

    065f920e85885d9a42ce64453e7c9f2988f46d6b7ea1167bb46110b78a1afcbf

    SHA512

    61e9e403da5fec229b244a2c5e489685f7da6aa72b2b1a4d06befef7488e36439e773c6282770cc51222d41a34fd5f7c26ef240dd7ee6878020af29d92fa17f5

  • C:\Users\Admin\AppData\Roaming\tor\cached-microdescs.new

    Filesize

    5.0MB

    MD5

    eee2ca8e84ada3c3690288dbcff06d94

    SHA1

    725f1c09b45fad1d6df4665a1710b5ae5fb2d1e1

    SHA256

    bd7da6dabf18cd2fecca95bbc40039fc57aa4a45e8368b99636cde125d8e3b05

    SHA512

    549e20fe45cea11125a6229572d14138e75c13496b9c559364bdd495d3bae04e3def1696aaeeb62bc501a3686a59393288fc708802a7e3c203c46b8d2442ee7b

  • \Program Files\ChromeUpdateTaskMachinCore\ChromeUpdateTaskMachinCore.exe

    Filesize

    5.8MB

    MD5

    41eb04151e6a51149856069b92e8781c

    SHA1

    91ad7bb1848454f59269cdda09b2748b1b8811a0

    SHA256

    68ce3b3f77075ca40ebaa5b7569e5360a1cfa2a8b0684262b02970fb349c52f2

    SHA512

    83f4b5adf7a4fbe729bd5ae3e3e3cdecf2c6cffaac7778e82d32ab56c138648f9467877e526d64bcc7ee9be8d3d686a7e0f2284102cfd735e2e0a5c62e06dad4

  • \Program Files\ChromeUpdateTaskMachinCore\ChromeUpdateTaskMachinCore.exe

    Filesize

    5.8MB

    MD5

    41eb04151e6a51149856069b92e8781c

    SHA1

    91ad7bb1848454f59269cdda09b2748b1b8811a0

    SHA256

    68ce3b3f77075ca40ebaa5b7569e5360a1cfa2a8b0684262b02970fb349c52f2

    SHA512

    83f4b5adf7a4fbe729bd5ae3e3e3cdecf2c6cffaac7778e82d32ab56c138648f9467877e526d64bcc7ee9be8d3d686a7e0f2284102cfd735e2e0a5c62e06dad4

  • \Program Files\ChromeUpdateTaskMachinCore\ORsBHaReETgwnMypRf\tor\pluggable_transports\obfs4proxy.exe

    Filesize

    6.6MB

    MD5

    230e3602ebdd05dcf33121eac79d1dcd

    SHA1

    ff93876b412e8fb026fe4bc3105f177402d9e767

    SHA256

    df70d273c43901f7249294ed8f66479b9f5c994db6d0efbbb9b31ad6e8211a6d

    SHA512

    c7f107110f54129636d7ec78ba7ea23ac7ad0e0ace14ada0e1ca3ae66a7dee33c76a8d14ff1e3e945cc47e24e67d911b5ffef45374998383b5453b576d3fde05

  • \Program Files\ChromeUpdateTaskMachinCore\ORsBHaReETgwnMypRf\tor\pluggable_transports\obfs4proxy.exe

    Filesize

    6.6MB

    MD5

    230e3602ebdd05dcf33121eac79d1dcd

    SHA1

    ff93876b412e8fb026fe4bc3105f177402d9e767

    SHA256

    df70d273c43901f7249294ed8f66479b9f5c994db6d0efbbb9b31ad6e8211a6d

    SHA512

    c7f107110f54129636d7ec78ba7ea23ac7ad0e0ace14ada0e1ca3ae66a7dee33c76a8d14ff1e3e945cc47e24e67d911b5ffef45374998383b5453b576d3fde05

  • \Program Files\ChromeUpdateTaskMachinCore\ORsBHaReETgwnMypRf\tor\tor.exe

    Filesize

    7.4MB

    MD5

    bdce57b5d9974d1c6a75c4529e9f2e83

    SHA1

    bf5125b827a3f05103e1a480b225da8e7cea7049

    SHA256

    6663f24897889210b68f4fcbd86a74d65c25b54c171ce29009f92bf3a8e074b1

    SHA512

    5ea0a7aef154fc77c0a390352bbb1e035fc3814d22327c3338030fd5bd1968496943be02931bcf322e94899f95bf6549581d9f27c66f45d661f422e7bb0139c4

  • \Program Files\ChromeUpdateTaskMachinCore\ORsBHaReETgwnMypRf\tor\tor.exe

    Filesize

    7.4MB

    MD5

    bdce57b5d9974d1c6a75c4529e9f2e83

    SHA1

    bf5125b827a3f05103e1a480b225da8e7cea7049

    SHA256

    6663f24897889210b68f4fcbd86a74d65c25b54c171ce29009f92bf3a8e074b1

    SHA512

    5ea0a7aef154fc77c0a390352bbb1e035fc3814d22327c3338030fd5bd1968496943be02931bcf322e94899f95bf6549581d9f27c66f45d661f422e7bb0139c4