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Analysis

  • max time kernel
    151s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231023-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231023-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04/11/2023, 04:14

General

  • Target

    a1fc4b76637fb8bb31641c6c072050f7be5af9f569c7f1fb5b00fc2f27f725a3.exe

  • Size

    5.6MB

  • MD5

    9da07df356aad76d50d9b5a3d7307f02

  • SHA1

    24cb2dd576e9f943f7104e2d01f85f5341326047

  • SHA256

    a1fc4b76637fb8bb31641c6c072050f7be5af9f569c7f1fb5b00fc2f27f725a3

  • SHA512

    3dc797842a3e6d1b7a6942262443fb77a2824797799fe5d8f1bc0421f1d745d45fc9ab47dc2b5cc88db704861dcf47f7feedcd60fce7508bb1affc61a78c69e8

  • SSDEEP

    98304:riRmxZFsM4kxzDcT+GcY437KvDwEHuujlsaSzsC0p43MpQdZ9nc+fsCb+oSBAON6:uRm1syxacY48eda2TMpQdZ9nc+fyhNjG

Score
7/10

Malware Config

Signatures

  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 1 IoCs
  • Unexpected DNS network traffic destination 1 IoCs

    Network traffic to other servers than the configured DNS servers was detected on the DNS port.

  • 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 34 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Runs net.exe
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a1fc4b76637fb8bb31641c6c072050f7be5af9f569c7f1fb5b00fc2f27f725a3.exe
    "C:\Users\Admin\AppData\Local\Temp\a1fc4b76637fb8bb31641c6c072050f7be5af9f569c7f1fb5b00fc2f27f725a3.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4440
    • C:\Users\Admin\AppData\Local\Temp\is-P66MK.tmp\is-LV559.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-P66MK.tmp\is-LV559.tmp" /SL4 $A021E "C:\Users\Admin\AppData\Local\Temp\a1fc4b76637fb8bb31641c6c072050f7be5af9f569c7f1fb5b00fc2f27f725a3.exe" 5597940 141824
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops file in Program Files directory
      • Suspicious use of WriteProcessMemory
      PID:620
      • C:\Windows\SysWOW64\net.exe
        "C:\Windows\system32\net.exe" helpmsg 2
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:4312
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 helpmsg 2
          4⤵
            PID:992
        • C:\Program Files (x86)\Smart Projects\IsoBuster\IsoBuster_1121.exe
          "C:\Program Files (x86)\Smart Projects\IsoBuster\IsoBuster_1121.exe" -i
          3⤵
          • Executes dropped EXE
          PID:4108
        • C:\Program Files (x86)\Smart Projects\IsoBuster\IsoBuster_1121.exe
          "C:\Program Files (x86)\Smart Projects\IsoBuster\IsoBuster_1121.exe" -s
          3⤵
          • Executes dropped EXE
          PID:748

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Program Files (x86)\Smart Projects\IsoBuster\IsoBuster_1121.exe

      Filesize

      4.4MB

      MD5

      81bf17b6bc712eec07e481349afc3dbc

      SHA1

      eedecca191d3a6b1f16483714343fe1019d7fc62

      SHA256

      81baf334067384061f84fb8335cd811aa22984601ad103e3f575f0a5cb9a639b

      SHA512

      3aa53bfc176d2313e7a02c8f3511e1892adcacf02ee28135e5ae46b1224fdfaef6ddcba8b5f9b340c40c39d22b87d23468401df2c84ac57c57fdeabf2f302171

    • C:\Program Files (x86)\Smart Projects\IsoBuster\IsoBuster_1121.exe

      Filesize

      4.4MB

      MD5

      81bf17b6bc712eec07e481349afc3dbc

      SHA1

      eedecca191d3a6b1f16483714343fe1019d7fc62

      SHA256

      81baf334067384061f84fb8335cd811aa22984601ad103e3f575f0a5cb9a639b

      SHA512

      3aa53bfc176d2313e7a02c8f3511e1892adcacf02ee28135e5ae46b1224fdfaef6ddcba8b5f9b340c40c39d22b87d23468401df2c84ac57c57fdeabf2f302171

    • C:\Program Files (x86)\Smart Projects\IsoBuster\IsoBuster_1121.exe

      Filesize

      4.4MB

      MD5

      81bf17b6bc712eec07e481349afc3dbc

      SHA1

      eedecca191d3a6b1f16483714343fe1019d7fc62

      SHA256

      81baf334067384061f84fb8335cd811aa22984601ad103e3f575f0a5cb9a639b

      SHA512

      3aa53bfc176d2313e7a02c8f3511e1892adcacf02ee28135e5ae46b1224fdfaef6ddcba8b5f9b340c40c39d22b87d23468401df2c84ac57c57fdeabf2f302171

    • C:\Users\Admin\AppData\Local\Temp\is-IFN50.tmp\_iscrypt.dll

      Filesize

      2KB

      MD5

      a69559718ab506675e907fe49deb71e9

      SHA1

      bc8f404ffdb1960b50c12ff9413c893b56f2e36f

      SHA256

      2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

      SHA512

      e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

    • C:\Users\Admin\AppData\Local\Temp\is-P66MK.tmp\is-LV559.tmp

      Filesize

      642KB

      MD5

      e57693101a63b1f934f462bc7a2ef093

      SHA1

      2748ea8c66b980f14c9ce36c1c3061e690cf3ce7

      SHA256

      71267ff94c9fc72cbffaeed3bc2f33cef1eeb1887c29c574d7f26595d1a6235f

      SHA512

      3dcda686a85b19a9c7b4c96d132e90ed43c7df13ce9456beb2b88c278d8068cc3abcbfe25b1607c7b8281d276efb24809730f352927b326254f3208cbdf54a3e

    • C:\Users\Admin\AppData\Local\Temp\is-P66MK.tmp\is-LV559.tmp

      Filesize

      642KB

      MD5

      e57693101a63b1f934f462bc7a2ef093

      SHA1

      2748ea8c66b980f14c9ce36c1c3061e690cf3ce7

      SHA256

      71267ff94c9fc72cbffaeed3bc2f33cef1eeb1887c29c574d7f26595d1a6235f

      SHA512

      3dcda686a85b19a9c7b4c96d132e90ed43c7df13ce9456beb2b88c278d8068cc3abcbfe25b1607c7b8281d276efb24809730f352927b326254f3208cbdf54a3e

    • memory/620-7-0x0000000002350000-0x0000000002351000-memory.dmp

      Filesize

      4KB

    • memory/620-95-0x0000000000400000-0x00000000004CF000-memory.dmp

      Filesize

      828KB

    • memory/620-93-0x0000000002350000-0x0000000002351000-memory.dmp

      Filesize

      4KB

    • memory/748-113-0x0000000000AC0000-0x0000000000B64000-memory.dmp

      Filesize

      656KB

    • memory/748-122-0x0000000000400000-0x000000000086F000-memory.dmp

      Filesize

      4.4MB

    • memory/748-90-0x0000000000400000-0x000000000086F000-memory.dmp

      Filesize

      4.4MB

    • memory/748-141-0x0000000000400000-0x000000000086F000-memory.dmp

      Filesize

      4.4MB

    • memory/748-91-0x0000000000400000-0x000000000086F000-memory.dmp

      Filesize

      4.4MB

    • memory/748-138-0x0000000000400000-0x000000000086F000-memory.dmp

      Filesize

      4.4MB

    • memory/748-134-0x0000000000400000-0x000000000086F000-memory.dmp

      Filesize

      4.4MB

    • memory/748-131-0x0000000000400000-0x000000000086F000-memory.dmp

      Filesize

      4.4MB

    • memory/748-96-0x0000000000400000-0x000000000086F000-memory.dmp

      Filesize

      4.4MB

    • memory/748-97-0x0000000000400000-0x000000000086F000-memory.dmp

      Filesize

      4.4MB

    • memory/748-100-0x0000000000400000-0x000000000086F000-memory.dmp

      Filesize

      4.4MB

    • memory/748-103-0x0000000000400000-0x000000000086F000-memory.dmp

      Filesize

      4.4MB

    • memory/748-106-0x0000000000400000-0x000000000086F000-memory.dmp

      Filesize

      4.4MB

    • memory/748-109-0x0000000000400000-0x000000000086F000-memory.dmp

      Filesize

      4.4MB

    • memory/748-112-0x0000000000400000-0x000000000086F000-memory.dmp

      Filesize

      4.4MB

    • memory/748-128-0x0000000000400000-0x000000000086F000-memory.dmp

      Filesize

      4.4MB

    • memory/748-114-0x0000000000AC0000-0x0000000000B64000-memory.dmp

      Filesize

      656KB

    • memory/748-118-0x0000000000400000-0x000000000086F000-memory.dmp

      Filesize

      4.4MB

    • memory/748-119-0x0000000000AC0000-0x0000000000B64000-memory.dmp

      Filesize

      656KB

    • memory/748-125-0x0000000000400000-0x000000000086F000-memory.dmp

      Filesize

      4.4MB

    • memory/4108-87-0x0000000000400000-0x000000000086F000-memory.dmp

      Filesize

      4.4MB

    • memory/4108-83-0x0000000000400000-0x000000000086F000-memory.dmp

      Filesize

      4.4MB

    • memory/4108-86-0x0000000000400000-0x000000000086F000-memory.dmp

      Filesize

      4.4MB

    • memory/4108-84-0x0000000000400000-0x000000000086F000-memory.dmp

      Filesize

      4.4MB

    • memory/4440-1-0x0000000000400000-0x0000000000429000-memory.dmp

      Filesize

      164KB

    • memory/4440-92-0x0000000000400000-0x0000000000429000-memory.dmp

      Filesize

      164KB