Analysis

  • max time kernel
    72s
  • max time network
    48s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    29/10/2022, 02:33

General

  • Target

    88f96d5977ace868f03998c2c8bd5de1d1e4e1881192c0b96e52f700745f381e.dll

  • Size

    2.6MB

  • MD5

    08301ec0f33a91a47af71966bf2d1fc6

  • SHA1

    07fd63090d5bcf6e03226953659513d22f4bb0cb

  • SHA256

    88f96d5977ace868f03998c2c8bd5de1d1e4e1881192c0b96e52f700745f381e

  • SHA512

    7da4c6404fd905f5d94aadd0dc87dd8e0e850a6dae24df28e37734cbdeadac001787cc190530685a225cd4f73cc7bae37daf6c4893a84634fa776390ada8786c

  • SSDEEP

    49152:H/bHw4fnK5Rja8s70EHvsWywd/eTiP47xHCj59:H/bHw4PKPs70sjd/zP47xij5

Malware Config

Signatures

  • Blocklisted process makes network request 3 IoCs
  • Modifies AppInit DLL entries 2 TTPs
  • Loads dropped DLL 9 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 1 IoCs
  • Modifies data under HKEY_USERS 50 IoCs
  • Suspicious behavior: EnumeratesProcesses 5 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\88f96d5977ace868f03998c2c8bd5de1d1e4e1881192c0b96e52f700745f381e.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1752
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\88f96d5977ace868f03998c2c8bd5de1d1e4e1881192c0b96e52f700745f381e.dll,#1
      2⤵
      • Blocklisted process makes network request
      • Drops file in Program Files directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:1720
      • C:\Windows\SysWOW64\rundll32.exe
        "C:\Windows\system32\rundll32.exe" "c:\Program Files (x86)\RelaySoft\RelaySoft.dll",serv -install
        3⤵
        • Loads dropped DLL
        PID:1224
  • C:\Windows\system32\rundll32.exe
    "C:\Windows\system32\rundll32.exe" "c:\Program Files (x86)\RelaySoft\RelaySoft.dll",serv
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:576
    • C:\Windows\SysWOW64\rundll32.exe
      "C:\Windows\system32\rundll32.exe" "c:\Program Files (x86)\RelaySoft\RelaySoft.dll",serv
      2⤵
      • Loads dropped DLL
      • Modifies data under HKEY_USERS
      • Suspicious behavior: EnumeratesProcesses
      PID:1500

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • \??\c:\Program Files (x86)\RelaySoft\RelaySoft.dll

          Filesize

          2.6MB

          MD5

          08301ec0f33a91a47af71966bf2d1fc6

          SHA1

          07fd63090d5bcf6e03226953659513d22f4bb0cb

          SHA256

          88f96d5977ace868f03998c2c8bd5de1d1e4e1881192c0b96e52f700745f381e

          SHA512

          7da4c6404fd905f5d94aadd0dc87dd8e0e850a6dae24df28e37734cbdeadac001787cc190530685a225cd4f73cc7bae37daf6c4893a84634fa776390ada8786c

        • \Program Files (x86)\RelaySoft\RelaySoft.dll

          Filesize

          2.6MB

          MD5

          08301ec0f33a91a47af71966bf2d1fc6

          SHA1

          07fd63090d5bcf6e03226953659513d22f4bb0cb

          SHA256

          88f96d5977ace868f03998c2c8bd5de1d1e4e1881192c0b96e52f700745f381e

          SHA512

          7da4c6404fd905f5d94aadd0dc87dd8e0e850a6dae24df28e37734cbdeadac001787cc190530685a225cd4f73cc7bae37daf6c4893a84634fa776390ada8786c

        • \Program Files (x86)\RelaySoft\RelaySoft.dll

          Filesize

          2.6MB

          MD5

          08301ec0f33a91a47af71966bf2d1fc6

          SHA1

          07fd63090d5bcf6e03226953659513d22f4bb0cb

          SHA256

          88f96d5977ace868f03998c2c8bd5de1d1e4e1881192c0b96e52f700745f381e

          SHA512

          7da4c6404fd905f5d94aadd0dc87dd8e0e850a6dae24df28e37734cbdeadac001787cc190530685a225cd4f73cc7bae37daf6c4893a84634fa776390ada8786c

        • \Program Files (x86)\RelaySoft\RelaySoft.dll

          Filesize

          2.6MB

          MD5

          08301ec0f33a91a47af71966bf2d1fc6

          SHA1

          07fd63090d5bcf6e03226953659513d22f4bb0cb

          SHA256

          88f96d5977ace868f03998c2c8bd5de1d1e4e1881192c0b96e52f700745f381e

          SHA512

          7da4c6404fd905f5d94aadd0dc87dd8e0e850a6dae24df28e37734cbdeadac001787cc190530685a225cd4f73cc7bae37daf6c4893a84634fa776390ada8786c

        • \Program Files (x86)\RelaySoft\RelaySoft.dll

          Filesize

          2.6MB

          MD5

          08301ec0f33a91a47af71966bf2d1fc6

          SHA1

          07fd63090d5bcf6e03226953659513d22f4bb0cb

          SHA256

          88f96d5977ace868f03998c2c8bd5de1d1e4e1881192c0b96e52f700745f381e

          SHA512

          7da4c6404fd905f5d94aadd0dc87dd8e0e850a6dae24df28e37734cbdeadac001787cc190530685a225cd4f73cc7bae37daf6c4893a84634fa776390ada8786c

        • \Program Files (x86)\RelaySoft\RelaySoft.dll

          Filesize

          2.6MB

          MD5

          08301ec0f33a91a47af71966bf2d1fc6

          SHA1

          07fd63090d5bcf6e03226953659513d22f4bb0cb

          SHA256

          88f96d5977ace868f03998c2c8bd5de1d1e4e1881192c0b96e52f700745f381e

          SHA512

          7da4c6404fd905f5d94aadd0dc87dd8e0e850a6dae24df28e37734cbdeadac001787cc190530685a225cd4f73cc7bae37daf6c4893a84634fa776390ada8786c

        • \Program Files (x86)\RelaySoft\RelaySoft.dll

          Filesize

          2.6MB

          MD5

          08301ec0f33a91a47af71966bf2d1fc6

          SHA1

          07fd63090d5bcf6e03226953659513d22f4bb0cb

          SHA256

          88f96d5977ace868f03998c2c8bd5de1d1e4e1881192c0b96e52f700745f381e

          SHA512

          7da4c6404fd905f5d94aadd0dc87dd8e0e850a6dae24df28e37734cbdeadac001787cc190530685a225cd4f73cc7bae37daf6c4893a84634fa776390ada8786c

        • \Program Files (x86)\RelaySoft\RelaySoft.dll

          Filesize

          2.6MB

          MD5

          08301ec0f33a91a47af71966bf2d1fc6

          SHA1

          07fd63090d5bcf6e03226953659513d22f4bb0cb

          SHA256

          88f96d5977ace868f03998c2c8bd5de1d1e4e1881192c0b96e52f700745f381e

          SHA512

          7da4c6404fd905f5d94aadd0dc87dd8e0e850a6dae24df28e37734cbdeadac001787cc190530685a225cd4f73cc7bae37daf6c4893a84634fa776390ada8786c

        • \Program Files (x86)\RelaySoft\RelaySoft.dll

          Filesize

          2.6MB

          MD5

          08301ec0f33a91a47af71966bf2d1fc6

          SHA1

          07fd63090d5bcf6e03226953659513d22f4bb0cb

          SHA256

          88f96d5977ace868f03998c2c8bd5de1d1e4e1881192c0b96e52f700745f381e

          SHA512

          7da4c6404fd905f5d94aadd0dc87dd8e0e850a6dae24df28e37734cbdeadac001787cc190530685a225cd4f73cc7bae37daf6c4893a84634fa776390ada8786c

        • \Program Files (x86)\RelaySoft\RelaySoft.dll

          Filesize

          2.6MB

          MD5

          08301ec0f33a91a47af71966bf2d1fc6

          SHA1

          07fd63090d5bcf6e03226953659513d22f4bb0cb

          SHA256

          88f96d5977ace868f03998c2c8bd5de1d1e4e1881192c0b96e52f700745f381e

          SHA512

          7da4c6404fd905f5d94aadd0dc87dd8e0e850a6dae24df28e37734cbdeadac001787cc190530685a225cd4f73cc7bae37daf6c4893a84634fa776390ada8786c

        • memory/1224-65-0x00000000737D0000-0x0000000073B66000-memory.dmp

          Filesize

          3.6MB

        • memory/1224-66-0x00000000005BA000-0x00000000005BC000-memory.dmp

          Filesize

          8KB

        • memory/1500-73-0x00000000737D0000-0x0000000073B66000-memory.dmp

          Filesize

          3.6MB

        • memory/1500-74-0x00000000005FA000-0x00000000005FC000-memory.dmp

          Filesize

          8KB

        • memory/1500-76-0x00000000737D0000-0x0000000073B66000-memory.dmp

          Filesize

          3.6MB

        • memory/1500-78-0x0000000001700000-0x0000000001A96000-memory.dmp

          Filesize

          3.6MB

        • memory/1500-80-0x0000000000609000-0x000000000062A000-memory.dmp

          Filesize

          132KB

        • memory/1720-64-0x000000000033C000-0x000000000033E000-memory.dmp

          Filesize

          8KB

        • memory/1720-63-0x0000000073F10000-0x00000000742A6000-memory.dmp

          Filesize

          3.6MB

        • memory/1720-75-0x0000000073F10000-0x00000000742A6000-memory.dmp

          Filesize

          3.6MB

        • memory/1720-55-0x0000000075111000-0x0000000075113000-memory.dmp

          Filesize

          8KB