Analysis

  • max time kernel
    150s
  • max time network
    145s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    28-01-2024 20:58

General

  • Target

    7dfc5de3055bae2c2056b13cdd47a090.dll

  • Size

    1.7MB

  • MD5

    7dfc5de3055bae2c2056b13cdd47a090

  • SHA1

    51978d2febcabd2e969a15e71da3d4b572a2053d

  • SHA256

    d95cc0433afb03437c023c244ea84af4d4adb9e3f99de177b77f27dde047399e

  • SHA512

    d8810393576a5e82348cb00d700ad8a2731a2ef8029db264a2739dde9cd85f334a1508f53b604f4fe90d44ba88915bf48d94bd9a4466da4efd21ced49c64cde0

  • SSDEEP

    12288:vVI0W/TtlPLfJCm3WIYxJ9yK5IQ9PElOlidGAWilgm5Qq0nB6wtt4AenZ1:GfP7fWsK5z9A+WGAW+V5SB6Ct4bnb

Malware Config

Signatures

  • Dridex

    Dridex(known as Bugat/Cridex) is a form of malware that specializes in stealing bank credentials.

  • Dridex Shellcode 1 IoCs

    Detects Dridex Payload shellcode injected in Explorer process.

  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 3 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Checks whether UAC is enabled 1 TTPs 4 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of WriteProcessMemory 12 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:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\7dfc5de3055bae2c2056b13cdd47a090.dll,#1
    1⤵
    • Checks whether UAC is enabled
    • Suspicious behavior: EnumeratesProcesses
    PID:3216
  • C:\Windows\system32\CustomShellHost.exe
    C:\Windows\system32\CustomShellHost.exe
    1⤵
      PID:1332
    • C:\Users\Admin\AppData\Local\Qk9\CustomShellHost.exe
      C:\Users\Admin\AppData\Local\Qk9\CustomShellHost.exe
      1⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Checks whether UAC is enabled
      PID:3752
    • C:\Windows\system32\sdclt.exe
      C:\Windows\system32\sdclt.exe
      1⤵
        PID:3764
      • C:\Users\Admin\AppData\Local\i5h54\sdclt.exe
        C:\Users\Admin\AppData\Local\i5h54\sdclt.exe
        1⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Checks whether UAC is enabled
        PID:4656
      • C:\Windows\system32\AtBroker.exe
        C:\Windows\system32\AtBroker.exe
        1⤵
          PID:2332
        • C:\Users\Admin\AppData\Local\3tl\AtBroker.exe
          C:\Users\Admin\AppData\Local\3tl\AtBroker.exe
          1⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • Checks whether UAC is enabled
          PID:4664

        Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Users\Admin\AppData\Local\3tl\AtBroker.exe

          Filesize

          90KB

          MD5

          30076e434a015bdf4c136e09351882cc

          SHA1

          584c958a35e23083a0861421357405afd26d9a0c

          SHA256

          ae7b1e298a6e38f0a3428151bfc5565ede50a8d98dafaa147b13cf89c61f2ddd

          SHA512

          675e310c2455acf9220735f34fa527afe87dac691e89cc0edc3c4659147e9fd223f96b7a3beea532047aa0ebc58880a7010343019a50aa73ce69a038e3592024

        • C:\Users\Admin\AppData\Local\3tl\UxTheme.dll

          Filesize

          1.7MB

          MD5

          3f62658d9a8e62b732b8b9cb5d2f3272

          SHA1

          46bb84a50f367ecde2651ebb0da3dabeb65aed96

          SHA256

          760df1abaed86030f23218417ca36cca22982ce4e7459ba197289ad5933edf33

          SHA512

          c15cc4bab4999a73b1575dac81253a4b348b62c6b7ac57ec643509ec90db16c615eb7ee2aa8e785cce560630e5c9c5a42005f9dceb40631b967a810ce07afc4f

        • C:\Users\Admin\AppData\Local\3tl\UxTheme.dll

          Filesize

          1.3MB

          MD5

          7bd3e5a0bad0b0fd6c1633dd3b543ca1

          SHA1

          78a528c80ced2c9aebc6a7c2605bfab15c33563d

          SHA256

          b5a23d3fb74326dbaeea4c127aa3cd7e7ae018725842b70a33f81864f9435b3e

          SHA512

          c2d23948392d958fd54e32318f98706bf5a2fda9db5cd76131dc17cd10e7bd55f16f1bec0909c32f2e3b0fc9fc1b238c7d490bd1f8e35a8b320c59a2473d12a2

        • C:\Users\Admin\AppData\Local\Qk9\CustomShellHost.exe

          Filesize

          835KB

          MD5

          70400e78b71bc8efdd063570428ae531

          SHA1

          cd86ecd008914fdd0389ac2dc00fe92d87746096

          SHA256

          91333f3282a2420359ae9d3adf537688741d21e964f021e2b152ab293447f289

          SHA512

          53005dda237fb23af79f54779c74a09835ad4cad3ca7b9dcec80e3793a60dd262f45b910bef96ab9c8e69d0c6990fea6ca5fee85d7f8425db523ae658372959e

        • C:\Users\Admin\AppData\Local\Qk9\WTSAPI32.dll

          Filesize

          1.7MB

          MD5

          4fc6488de9e47ed1d300e266f2bb3204

          SHA1

          3a99d3bf374914b100a5ecbbb5a6fc7b459c3fb0

          SHA256

          53b9194d4fa5520100d9d662d494095f46d7c7959315b840358267f554dae3ef

          SHA512

          f0f83cfdada877036deceb9c69994c1ef16663ba32bfa91799714b666b1072dc179a32ce365e9ce2397b29925945ff8520f1df5b00dfe6b5b56c62a2ad8977e5

        • C:\Users\Admin\AppData\Local\i5h54\sdclt.exe

          Filesize

          1.2MB

          MD5

          e09d48f225e7abcab14ebd3b8a9668ec

          SHA1

          1c5b9322b51c09a407d182df481609f7cb8c425d

          SHA256

          efd238ea79b93d07852d39052f1411618c36e7597e8af0966c4a3223f0021dc3

          SHA512

          384d606b90c4803e5144b4de24edc537cb22dd59336a18a58d229500ed36aec92c8467cae6d3f326647bd044d8074931da553c7809727fb70227e99c257df0b4

        • C:\Users\Admin\AppData\Local\i5h54\wer.dll

          Filesize

          1.7MB

          MD5

          55b6042f7ff53d44b98b2c7d0a3f9beb

          SHA1

          f8ed9656553aa656cf5f17f45776abd26828e2d1

          SHA256

          62e532a62acef71066ddb5f451a4a537bd650940e5e4a75ea69eb344ef1844b0

          SHA512

          ed95d0251144e318a719aa666f4d05d3621f49836c52ccf37875549d0ab2b57d7542d75a49da1ed7413f2e3582cae805b7a72e0633ea7e3df7d928109f5ec553

        • C:\Users\Admin\AppData\Roaming\MICROS~1\Windows\STARTM~1\Programs\Startup\Btpzaqnqvnv.lnk

          Filesize

          1KB

          MD5

          19cd86f36c13a19cef26997fa7b148e5

          SHA1

          3a2a8e04c3cc0ae76afe7365a06c0d8afc20ecd3

          SHA256

          3da33f52e037648f7feb453d30d0f7542341b322f130951c6db49bc39696a1dd

          SHA512

          951e24497a0c6926cb35a6a544f89ad233d39d720d3f30b286fb767726f71953246eaa46915db73299e73a73e1c94b7a9d7ba4b72940fb35d29f7f14f6173d01

        • memory/3216-0-0x000001F8973C0000-0x000001F8973C7000-memory.dmp

          Filesize

          28KB

        • memory/3216-1-0x0000000140000000-0x00000001401B6000-memory.dmp

          Filesize

          1.7MB

        • memory/3216-23-0x0000000140000000-0x00000001401B6000-memory.dmp

          Filesize

          1.7MB

        • memory/3532-16-0x0000000140000000-0x00000001401B6000-memory.dmp

          Filesize

          1.7MB

        • memory/3532-36-0x0000000002D30000-0x0000000002D37000-memory.dmp

          Filesize

          28KB

        • memory/3532-14-0x0000000140000000-0x00000001401B6000-memory.dmp

          Filesize

          1.7MB

        • memory/3532-17-0x0000000140000000-0x00000001401B6000-memory.dmp

          Filesize

          1.7MB

        • memory/3532-18-0x0000000140000000-0x00000001401B6000-memory.dmp

          Filesize

          1.7MB

        • memory/3532-19-0x0000000140000000-0x00000001401B6000-memory.dmp

          Filesize

          1.7MB

        • memory/3532-20-0x0000000140000000-0x00000001401B6000-memory.dmp

          Filesize

          1.7MB

        • memory/3532-21-0x0000000140000000-0x00000001401B6000-memory.dmp

          Filesize

          1.7MB

        • memory/3532-22-0x0000000140000000-0x00000001401B6000-memory.dmp

          Filesize

          1.7MB

        • memory/3532-13-0x0000000140000000-0x00000001401B6000-memory.dmp

          Filesize

          1.7MB

        • memory/3532-24-0x0000000140000000-0x00000001401B6000-memory.dmp

          Filesize

          1.7MB

        • memory/3532-25-0x0000000140000000-0x00000001401B6000-memory.dmp

          Filesize

          1.7MB

        • memory/3532-26-0x0000000140000000-0x00000001401B6000-memory.dmp

          Filesize

          1.7MB

        • memory/3532-27-0x0000000140000000-0x00000001401B6000-memory.dmp

          Filesize

          1.7MB

        • memory/3532-28-0x0000000140000000-0x00000001401B6000-memory.dmp

          Filesize

          1.7MB

        • memory/3532-29-0x0000000140000000-0x00000001401B6000-memory.dmp

          Filesize

          1.7MB

        • memory/3532-30-0x0000000140000000-0x00000001401B6000-memory.dmp

          Filesize

          1.7MB

        • memory/3532-32-0x0000000140000000-0x00000001401B6000-memory.dmp

          Filesize

          1.7MB

        • memory/3532-33-0x0000000140000000-0x00000001401B6000-memory.dmp

          Filesize

          1.7MB

        • memory/3532-34-0x0000000140000000-0x00000001401B6000-memory.dmp

          Filesize

          1.7MB

        • memory/3532-35-0x0000000140000000-0x00000001401B6000-memory.dmp

          Filesize

          1.7MB

        • memory/3532-15-0x0000000140000000-0x00000001401B6000-memory.dmp

          Filesize

          1.7MB

        • memory/3532-37-0x0000000140000000-0x00000001401B6000-memory.dmp

          Filesize

          1.7MB

        • memory/3532-31-0x0000000140000000-0x00000001401B6000-memory.dmp

          Filesize

          1.7MB

        • memory/3532-44-0x0000000140000000-0x00000001401B6000-memory.dmp

          Filesize

          1.7MB

        • memory/3532-45-0x00007FFEDB8E0000-0x00007FFEDB8F0000-memory.dmp

          Filesize

          64KB

        • memory/3532-54-0x0000000140000000-0x00000001401B6000-memory.dmp

          Filesize

          1.7MB

        • memory/3532-56-0x0000000140000000-0x00000001401B6000-memory.dmp

          Filesize

          1.7MB

        • memory/3532-12-0x0000000140000000-0x00000001401B6000-memory.dmp

          Filesize

          1.7MB

        • memory/3532-8-0x00007FFEDADDA000-0x00007FFEDADDB000-memory.dmp

          Filesize

          4KB

        • memory/3532-4-0x0000000003380000-0x0000000003381000-memory.dmp

          Filesize

          4KB

        • memory/3532-6-0x0000000140000000-0x00000001401B6000-memory.dmp

          Filesize

          1.7MB

        • memory/3532-7-0x0000000140000000-0x00000001401B6000-memory.dmp

          Filesize

          1.7MB

        • memory/3532-11-0x0000000140000000-0x00000001401B6000-memory.dmp

          Filesize

          1.7MB

        • memory/3532-10-0x0000000140000000-0x00000001401B6000-memory.dmp

          Filesize

          1.7MB

        • memory/3532-9-0x0000000140000000-0x00000001401B6000-memory.dmp

          Filesize

          1.7MB

        • memory/3752-71-0x0000000140000000-0x00000001401B7000-memory.dmp

          Filesize

          1.7MB

        • memory/3752-65-0x00000255A0930000-0x00000255A0937000-memory.dmp

          Filesize

          28KB

        • memory/3752-66-0x0000000140000000-0x00000001401B7000-memory.dmp

          Filesize

          1.7MB

        • memory/4656-82-0x0000016003B30000-0x0000016003B37000-memory.dmp

          Filesize

          28KB

        • memory/4656-88-0x0000000140000000-0x00000001401B8000-memory.dmp

          Filesize

          1.7MB

        • memory/4656-83-0x0000000140000000-0x00000001401B8000-memory.dmp

          Filesize

          1.7MB

        • memory/4664-100-0x000002B11ADC0000-0x000002B11ADC7000-memory.dmp

          Filesize

          28KB

        • memory/4664-105-0x0000000140000000-0x00000001401B7000-memory.dmp

          Filesize

          1.7MB