General

  • Target
    memreduct.zip
  • Size 17.6MB
  • Sample260720-al7d6act8z
  • SHA256 db2165746251c148ea431dc613322a734c1d366b1a3d1ba9943aed0925d2f65c
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Targets

    • Target
      _CommonRedist\PhysX\9.21.0713\PhysX3_x86.dll
    • Size 961KB
    • SHA256 08bcf2d63c82be6480f6cf781b638533d20177d24d17947f2b6d84e6034de10c
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    7/10
    • Executes dropped EXE

    • Loads dropped DLL

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

    • Target
      _CommonRedist\PhysX\9.21.0713\PhysXCooking_x86.dll
    • Size 1.5MB
    • SHA256 4e1255dc8307456f20774ac07fccb8cd84af0724e8c6887337316ece8509e423
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    3/10
    • Target
      _CommonRedist\PhysX\9.21.0713\PhysXCore_x86.dll
    • Size 4.8MB
    • SHA256 828623b5e63913c2373a7f2cae89dbac67c09541f0562cad6c6f79abc4476d02
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    3/10
    • Target
      _CommonRedist\PhysX\9.21.0713\PhysXLoader.dll
    • Size 414KB
    • SHA256 2d03fcda58c5562bfd947594e05670b06c4268cc7c0975e0088e00fd2963502d
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    3/10
    • Target
      _CommonRedist\audio\dsound.dll
    • Size 448KB
    • SHA256 8918ec37c61c3de55814af87e727fc61a04663ab7988913bec0bec7b8aa0ee4d
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    3/10
    • Target
      _CommonRedist\audio\winmm.dll
    • Size 191KB
    • SHA256 39721311959ad3bda7c554781d1833a22d9ac2dce1d15c5f5791336e6f394886
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    3/10
    • Target
      _CommonRedist\audio\xaudio2_util.dll
    • Size 55KB
    • SHA256 51038f0b7bd1be355917c6c7b83540d2a0c472d80e7a04c7ea10e437932bbf49
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    3/10
    • Target
      _CommonRedist\runtime\api-ms-win-crt-math-l1-1-0.dll
    • Size 21KB
    • SHA256 f7240e3ed7d5ee552365d7c99896dce3c69d35568f94d3274e4eb6cafc47ffeb
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    3/10
    • Target
      _CommonRedist\runtime\api-ms-win-crt-runtime-l1-1-0.dll
    • Size 21KB
    • SHA256 8539d598a7353263621aaecb4b1a93a12b75d6decc35473a96710c7a0261b9d6
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    3/10
    • Target
      _CommonRedist\runtime\msvcp_win.dll
    • Size 257KB
    • SHA256 918707d52ddee401e18f886e71c8496c7f553fd410e484776503e83355e55e55
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    3/10
    • Target
      _CommonRedist\runtime\msvcrt.dll
    • Size 790KB
    • SHA256 98492101ee18a2f693c03e5a75e77273d63205ab0707c63fc8983766e77633cb
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    3/10
    • Target
      _CommonRedist\runtime\ucrtbase.dll
    • Size 1.1MB
    • SHA256 0f4ec73cf4f64d4b89f3c87a127bc7c46c052a4226f9876a3a75015b716d9228
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    3/10
    • Target
      _CommonRedist\runtime\ucrtbase_ext.dll
    • Size 4.8MB
    • SHA256 140850a10d7436fc16368839bf02d7f8f7af0fb4dd20774997cb97e717130e3b
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    3/10
    • Target
      _CommonRedist\vcredist\2013\msvcp120.dll
    • Size 444KB
    • SHA256 0e535e147d253fc645ccb9406c888aee374ab1f3f9d99dc057a2b19cf401458b
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    3/10
    • Target
      _CommonRedist\vcredist\2013\msvcp120_atomic.dll
    • Size 54KB
    • SHA256 44adca787fe0a2a38cb0c318b94c05bdac45f265211e3508d568347d70d41dd6
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    3/10
    • Target
      _CommonRedist\vcredist\2013\msvcr120.dll
    • Size 948KB
    • SHA256 82225ec7e2da43a7a72a3d523698747512523afa488767ca6839c63a7a5706fa
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    3/10
    • Target
      _CommonRedist\vcredist\2013\vcomp120.dll
    • Size 117KB
    • SHA256 11eefb5ae4d0b237ae08aabd46674fef76593af0992f48588174c5bb28dab053
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    3/10
    • Target
      _CommonRedist\vcredist\2022\concrt140.dll
    • Size 307KB
    • SHA256 35f27db2c0d927136230467b7b89eec3f57f256e7e12d43c644d8b8074ad2c44
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    3/10
    • Target
      _CommonRedist\vcredist\2022\msvcp140.dll
    • Size 604KB
    • SHA256 6d7964bd08055935416349c0bcabf0484d76a11884a50546662a42e7e5697c01
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    3/10
    • Target
      _CommonRedist\vcredist\2022\vccorlib140.dll
    • Size 280KB
    • SHA256 dba2723d66b474a7d094e769bed578855631014a447244f1f44dde1be2c16329
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    3/10
    • Target
      _CommonRedist\vcredist\2022\vccrt140.dll
    • Size 4.8MB
    • SHA256 5781093c3aa6e1fbc37b3e4dbfb64b0e61aa127922716de25d20760442921318
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    3/10
    • Target
      _CommonRedist\vcredist\2022\vcruntime140.dll
    • Size 120KB
    • SHA256 3bb90465379e773e122870e4435966026550f46602586560269f952422f579bc
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    3/10
    • Target
      dsetup.dll
    • Size 94KB
    • SHA256 fe7e9d8b4509002e510dd04b155443b49f20d105c98f2cc4caf4ccca283d1fca
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    6/10
    • Checks for any installed AV software in registry

    • Target
      dsetup_orig.dll
    • Size 93KB
    • SHA256 2a61679eeedabf7d0d0ac14e5447486575622d6b7cfa56f136c1576ff96da21f
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    4/10
    • Target
      memreduct-setup.exe
    • Size 505KB
    • SHA256 8f47d7121ef6532ad9ad9901e44e237f5c30448b752028c58a9d19521414e40d
    • MD5 SHA1 SHA512 SSDEEP TLSH
    • Sets service image path in registry

      This determines the executable launched when a service starts. It can be used to establish persistence.

    • Signed with revoked ConnectWise certificate

      Binary is signed using a ConnectWise certificate revoked for key compromise.

    • Event Triggered Execution: Component Object Model Hijacking

      Adversaries may establish persistence by executing malicious content triggered by hijacked references to Component Object Model (COM) objects.

    • Executes dropped EXE

    • Loads dropped DLL

    • Checks for any installed AV software in registry

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • Boot or Logon Autostart Execution: Authentication Package

      Suspicious Windows Authentication Registry Modification.

    • Drops file in System32 directory

MITRE ATT&CK Enterprise v16

Tasks

static1

Score
3/10

behavioral1

discovery
Score
7/10

behavioral2

discovery
Score
3/10

behavioral3

discovery
Score
3/10

behavioral4

discovery
Score
3/10

behavioral5

discovery
Score
3/10

behavioral6

discovery
Score
3/10

behavioral7

discovery
Score
3/10

behavioral8

discovery
Score
3/10

behavioral9

discovery
Score
3/10

behavioral10

discovery
Score
3/10

behavioral11

discovery
Score
3/10

behavioral12

discovery
Score
3/10

behavioral13

discovery
Score
3/10

behavioral14

discovery
Score
3/10

behavioral15

discovery
Score
3/10

behavioral16

discovery
Score
3/10

behavioral17

discovery
Score
3/10

behavioral18

discovery
Score
3/10

behavioral19

discovery
Score
3/10

behavioral20

discovery
Score
3/10

behavioral21

discovery
Score
3/10

behavioral22

discovery
Score
3/10

behavioral23

discovery
Score
6/10

behavioral24

discovery
Score
4/10

behavioral25

discoveryexecutionpersistenceprivilege_escalationrevoked_codesign
Score
8/10