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Analysis

  • max time kernel
    144s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231025-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231025-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04/11/2023, 00:48

General

  • Target

    a3c91cc7e7d815f715ff024d6ea7b82f225dded6d516023000633c95002f5af2.exe

  • Size

    5.6MB

  • MD5

    8297ec4d3ee7236f337f4182006dc8b1

  • SHA1

    f97c573dcf3f31c186cdf27e5339b919f29547ac

  • SHA256

    a3c91cc7e7d815f715ff024d6ea7b82f225dded6d516023000633c95002f5af2

  • SHA512

    cb5a9f1ed86884e7a47eaef8f25ede8ce35b4b065f39ae2b5bba214f00831a02b26692e3771d591a540cf5f2c4a9d18a7a2141063a0cea480581077c20a45e36

  • SSDEEP

    98304:2iRmxZFsM4kxzDcT+GcY437KvDwEHuujlsaSzsC0p43MpQdZ9nc+fsCb+oSBAON6:zRm1syxacY48eda2TMpQdZ9nc+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\a3c91cc7e7d815f715ff024d6ea7b82f225dded6d516023000633c95002f5af2.exe
    "C:\Users\Admin\AppData\Local\Temp\a3c91cc7e7d815f715ff024d6ea7b82f225dded6d516023000633c95002f5af2.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3360
    • C:\Users\Admin\AppData\Local\Temp\is-5A86D.tmp\is-SK539.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-5A86D.tmp\is-SK539.tmp" /SL4 $70188 "C:\Users\Admin\AppData\Local\Temp\a3c91cc7e7d815f715ff024d6ea7b82f225dded6d516023000633c95002f5af2.exe" 5597940 141824
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops file in Program Files directory
      • Suspicious use of WriteProcessMemory
      PID:2172
      • C:\Windows\SysWOW64\net.exe
        "C:\Windows\system32\net.exe" helpmsg 2
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:4512
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 helpmsg 2
          4⤵
            PID:3692
        • 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:4700
        • 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:2044

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    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-5A86D.tmp\is-SK539.tmp

      Filesize

      642KB

      MD5

      e57693101a63b1f934f462bc7a2ef093

      SHA1

      2748ea8c66b980f14c9ce36c1c3061e690cf3ce7

      SHA256

      71267ff94c9fc72cbffaeed3bc2f33cef1eeb1887c29c574d7f26595d1a6235f

      SHA512

      3dcda686a85b19a9c7b4c96d132e90ed43c7df13ce9456beb2b88c278d8068cc3abcbfe25b1607c7b8281d276efb24809730f352927b326254f3208cbdf54a3e

    • C:\Users\Admin\AppData\Local\Temp\is-5A86D.tmp\is-SK539.tmp

      Filesize

      642KB

      MD5

      e57693101a63b1f934f462bc7a2ef093

      SHA1

      2748ea8c66b980f14c9ce36c1c3061e690cf3ce7

      SHA256

      71267ff94c9fc72cbffaeed3bc2f33cef1eeb1887c29c574d7f26595d1a6235f

      SHA512

      3dcda686a85b19a9c7b4c96d132e90ed43c7df13ce9456beb2b88c278d8068cc3abcbfe25b1607c7b8281d276efb24809730f352927b326254f3208cbdf54a3e

    • C:\Users\Admin\AppData\Local\Temp\is-UO0SR.tmp\_iscrypt.dll

      Filesize

      2KB

      MD5

      a69559718ab506675e907fe49deb71e9

      SHA1

      bc8f404ffdb1960b50c12ff9413c893b56f2e36f

      SHA256

      2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

      SHA512

      e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

    • memory/2044-117-0x0000000000400000-0x000000000086F000-memory.dmp

      Filesize

      4.4MB

    • memory/2044-105-0x0000000000400000-0x000000000086F000-memory.dmp

      Filesize

      4.4MB

    • memory/2044-137-0x0000000000400000-0x000000000086F000-memory.dmp

      Filesize

      4.4MB

    • memory/2044-133-0x0000000000400000-0x000000000086F000-memory.dmp

      Filesize

      4.4MB

    • memory/2044-130-0x0000000000400000-0x000000000086F000-memory.dmp

      Filesize

      4.4MB

    • memory/2044-127-0x0000000000400000-0x000000000086F000-memory.dmp

      Filesize

      4.4MB

    • memory/2044-124-0x0000000000400000-0x000000000086F000-memory.dmp

      Filesize

      4.4MB

    • memory/2044-92-0x0000000000400000-0x000000000086F000-memory.dmp

      Filesize

      4.4MB

    • memory/2044-121-0x0000000000400000-0x000000000086F000-memory.dmp

      Filesize

      4.4MB

    • memory/2044-95-0x0000000000400000-0x000000000086F000-memory.dmp

      Filesize

      4.4MB

    • memory/2044-96-0x0000000000400000-0x000000000086F000-memory.dmp

      Filesize

      4.4MB

    • memory/2044-99-0x0000000000400000-0x000000000086F000-memory.dmp

      Filesize

      4.4MB

    • memory/2044-102-0x0000000000400000-0x000000000086F000-memory.dmp

      Filesize

      4.4MB

    • memory/2044-118-0x0000000000B00000-0x0000000000BA4000-memory.dmp

      Filesize

      656KB

    • memory/2044-108-0x0000000000400000-0x000000000086F000-memory.dmp

      Filesize

      4.4MB

    • memory/2044-111-0x0000000000400000-0x000000000086F000-memory.dmp

      Filesize

      4.4MB

    • memory/2044-112-0x0000000000B00000-0x0000000000BA4000-memory.dmp

      Filesize

      656KB

    • memory/2044-113-0x0000000000B00000-0x0000000000BA4000-memory.dmp

      Filesize

      656KB

    • memory/2172-93-0x0000000000400000-0x00000000004CF000-memory.dmp

      Filesize

      828KB

    • memory/2172-91-0x0000000002250000-0x0000000002251000-memory.dmp

      Filesize

      4KB

    • memory/2172-7-0x0000000002250000-0x0000000002251000-memory.dmp

      Filesize

      4KB

    • memory/3360-1-0x0000000000400000-0x0000000000429000-memory.dmp

      Filesize

      164KB

    • memory/3360-86-0x0000000000400000-0x0000000000429000-memory.dmp

      Filesize

      164KB

    • memory/4700-82-0x0000000000400000-0x000000000086F000-memory.dmp

      Filesize

      4.4MB

    • memory/4700-88-0x0000000000400000-0x000000000086F000-memory.dmp

      Filesize

      4.4MB

    • memory/4700-84-0x0000000000400000-0x000000000086F000-memory.dmp

      Filesize

      4.4MB