Analysis

  • max time kernel
    76s
  • max time network
    36s
  • platform
    windows7_x64
  • resource
    win7-20230220-en
  • resource tags

    arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
  • submitted
    03/06/2023, 11:43

General

  • Target

    LB3.exe

  • Size

    146KB

  • MD5

    33228a20a7e985f02e2ddd73cccde729

  • SHA1

    58ab960e629a609d135e1988c72f2991e5f76e30

  • SHA256

    0845a8c3be602a72e23a155b23ad554495bd558fa79e1bb849aa75f79d069194

  • SHA512

    075002dd1b0f8e536c1ff99d30368f5adfc90a2f3e7a74c9770119e7b54a5851236657b7edcb735d457e78a7e67b7c285b6ceaa6ca2907542ac208dfc8c9aabe

  • SSDEEP

    3072:36glyuxE4GsUPnliByocWepqFPUBwrqveV84:36gDBGpvEByocWe8MB4G

Malware Config

Signatures

  • Renames multiple (313) files with added filename extension

    This suggests ransomware activity of encrypting all the files on the system.

  • Modifies extensions of user files 6 IoCs

    Ransomware generally changes the extension on encrypted files.

  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Drops desktop.ini file(s) 1 IoCs
  • Sets desktop wallpaper using registry 2 TTPs 2 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 5 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies Control Panel 2 IoCs
  • Modifies registry class 5 IoCs
  • Suspicious behavior: EnumeratesProcesses 16 IoCs
  • Suspicious behavior: RenamesItself 26 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\LB3.exe
    "C:\Users\Admin\AppData\Local\Temp\LB3.exe"
    1⤵
    • Modifies extensions of user files
    • Loads dropped DLL
    • Drops desktop.ini file(s)
    • Sets desktop wallpaper using registry
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Modifies Control Panel
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2040
    • C:\ProgramData\477D.tmp
      "C:\ProgramData\477D.tmp"
      2⤵
      • Deletes itself
      • Executes dropped EXE
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Suspicious behavior: RenamesItself
      • Suspicious use of WriteProcessMemory
      PID:1588
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C DEL /F /Q C:\PROGRA~3\477D.tmp >> NUL
        3⤵
          PID:984
    • C:\Windows\system32\AUDIODG.EXE
      C:\Windows\system32\AUDIODG.EXE 0x154
      1⤵
        PID:276

      Network

      MITRE ATT&CK Enterprise v6

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\$Recycle.Bin\S-1-5-21-1283023626-844874658-3193756055-1000\AAAAAAAAAAA

        Filesize

        129B

        MD5

        6e011b87599e1340215ba333d48a0d25

        SHA1

        c846641c02706314cf2199bd4fc5c7b716ca9afa

        SHA256

        635f1ae6fc1f02c012f19adcd164905d0f2a1594243029a40f029fa4f2ee69e3

        SHA512

        0ca47b3da6eb49a754cac96af1ac82b6c84dedf6243e0b56d2646ee19ba9cf734829e0563852d6c5d0d46736a13b52bfe59b1eadfe29bd1916e9f520b13e0920

      • C:\$Recycle.Bin\S-1-5-21-1283023626-844874658-3193756055-1000\BBBBBBBBBBB

        Filesize

        129B

        MD5

        6e011b87599e1340215ba333d48a0d25

        SHA1

        c846641c02706314cf2199bd4fc5c7b716ca9afa

        SHA256

        635f1ae6fc1f02c012f19adcd164905d0f2a1594243029a40f029fa4f2ee69e3

        SHA512

        0ca47b3da6eb49a754cac96af1ac82b6c84dedf6243e0b56d2646ee19ba9cf734829e0563852d6c5d0d46736a13b52bfe59b1eadfe29bd1916e9f520b13e0920

      • C:\$Recycle.Bin\S-1-5-21-1283023626-844874658-3193756055-1000\CCCCCCCCCCC

        Filesize

        129B

        MD5

        6e011b87599e1340215ba333d48a0d25

        SHA1

        c846641c02706314cf2199bd4fc5c7b716ca9afa

        SHA256

        635f1ae6fc1f02c012f19adcd164905d0f2a1594243029a40f029fa4f2ee69e3

        SHA512

        0ca47b3da6eb49a754cac96af1ac82b6c84dedf6243e0b56d2646ee19ba9cf734829e0563852d6c5d0d46736a13b52bfe59b1eadfe29bd1916e9f520b13e0920

      • C:\$Recycle.Bin\S-1-5-21-1283023626-844874658-3193756055-1000\DDDDDDDDDDD

        Filesize

        129B

        MD5

        6e011b87599e1340215ba333d48a0d25

        SHA1

        c846641c02706314cf2199bd4fc5c7b716ca9afa

        SHA256

        635f1ae6fc1f02c012f19adcd164905d0f2a1594243029a40f029fa4f2ee69e3

        SHA512

        0ca47b3da6eb49a754cac96af1ac82b6c84dedf6243e0b56d2646ee19ba9cf734829e0563852d6c5d0d46736a13b52bfe59b1eadfe29bd1916e9f520b13e0920

      • C:\$Recycle.Bin\S-1-5-21-1283023626-844874658-3193756055-1000\DDDDDDDDDDD

        Filesize

        129B

        MD5

        6e011b87599e1340215ba333d48a0d25

        SHA1

        c846641c02706314cf2199bd4fc5c7b716ca9afa

        SHA256

        635f1ae6fc1f02c012f19adcd164905d0f2a1594243029a40f029fa4f2ee69e3

        SHA512

        0ca47b3da6eb49a754cac96af1ac82b6c84dedf6243e0b56d2646ee19ba9cf734829e0563852d6c5d0d46736a13b52bfe59b1eadfe29bd1916e9f520b13e0920

      • C:\$Recycle.Bin\S-1-5-21-1283023626-844874658-3193756055-1000\EEEEEEEEEEE

        Filesize

        129B

        MD5

        6e011b87599e1340215ba333d48a0d25

        SHA1

        c846641c02706314cf2199bd4fc5c7b716ca9afa

        SHA256

        635f1ae6fc1f02c012f19adcd164905d0f2a1594243029a40f029fa4f2ee69e3

        SHA512

        0ca47b3da6eb49a754cac96af1ac82b6c84dedf6243e0b56d2646ee19ba9cf734829e0563852d6c5d0d46736a13b52bfe59b1eadfe29bd1916e9f520b13e0920

      • C:\$Recycle.Bin\S-1-5-21-1283023626-844874658-3193756055-1000\FFFFFFFFFFF

        Filesize

        129B

        MD5

        6e011b87599e1340215ba333d48a0d25

        SHA1

        c846641c02706314cf2199bd4fc5c7b716ca9afa

        SHA256

        635f1ae6fc1f02c012f19adcd164905d0f2a1594243029a40f029fa4f2ee69e3

        SHA512

        0ca47b3da6eb49a754cac96af1ac82b6c84dedf6243e0b56d2646ee19ba9cf734829e0563852d6c5d0d46736a13b52bfe59b1eadfe29bd1916e9f520b13e0920

      • C:\$Recycle.Bin\S-1-5-21-1283023626-844874658-3193756055-1000\GGGGGGGGGGG

        Filesize

        129B

        MD5

        6e011b87599e1340215ba333d48a0d25

        SHA1

        c846641c02706314cf2199bd4fc5c7b716ca9afa

        SHA256

        635f1ae6fc1f02c012f19adcd164905d0f2a1594243029a40f029fa4f2ee69e3

        SHA512

        0ca47b3da6eb49a754cac96af1ac82b6c84dedf6243e0b56d2646ee19ba9cf734829e0563852d6c5d0d46736a13b52bfe59b1eadfe29bd1916e9f520b13e0920

      • C:\$Recycle.Bin\S-1-5-21-1283023626-844874658-3193756055-1000\HHHHHHHHHHH

        Filesize

        129B

        MD5

        6e011b87599e1340215ba333d48a0d25

        SHA1

        c846641c02706314cf2199bd4fc5c7b716ca9afa

        SHA256

        635f1ae6fc1f02c012f19adcd164905d0f2a1594243029a40f029fa4f2ee69e3

        SHA512

        0ca47b3da6eb49a754cac96af1ac82b6c84dedf6243e0b56d2646ee19ba9cf734829e0563852d6c5d0d46736a13b52bfe59b1eadfe29bd1916e9f520b13e0920

      • C:\$Recycle.Bin\S-1-5-21-1283023626-844874658-3193756055-1000\IIIIIIIIIII

        Filesize

        129B

        MD5

        6e011b87599e1340215ba333d48a0d25

        SHA1

        c846641c02706314cf2199bd4fc5c7b716ca9afa

        SHA256

        635f1ae6fc1f02c012f19adcd164905d0f2a1594243029a40f029fa4f2ee69e3

        SHA512

        0ca47b3da6eb49a754cac96af1ac82b6c84dedf6243e0b56d2646ee19ba9cf734829e0563852d6c5d0d46736a13b52bfe59b1eadfe29bd1916e9f520b13e0920

      • C:\$Recycle.Bin\S-1-5-21-1283023626-844874658-3193756055-1000\JJJJJJJJJJJ

        Filesize

        129B

        MD5

        6e011b87599e1340215ba333d48a0d25

        SHA1

        c846641c02706314cf2199bd4fc5c7b716ca9afa

        SHA256

        635f1ae6fc1f02c012f19adcd164905d0f2a1594243029a40f029fa4f2ee69e3

        SHA512

        0ca47b3da6eb49a754cac96af1ac82b6c84dedf6243e0b56d2646ee19ba9cf734829e0563852d6c5d0d46736a13b52bfe59b1eadfe29bd1916e9f520b13e0920

      • C:\$Recycle.Bin\S-1-5-21-1283023626-844874658-3193756055-1000\KKKKKKKKKKK

        Filesize

        129B

        MD5

        6e011b87599e1340215ba333d48a0d25

        SHA1

        c846641c02706314cf2199bd4fc5c7b716ca9afa

        SHA256

        635f1ae6fc1f02c012f19adcd164905d0f2a1594243029a40f029fa4f2ee69e3

        SHA512

        0ca47b3da6eb49a754cac96af1ac82b6c84dedf6243e0b56d2646ee19ba9cf734829e0563852d6c5d0d46736a13b52bfe59b1eadfe29bd1916e9f520b13e0920

      • C:\$Recycle.Bin\S-1-5-21-1283023626-844874658-3193756055-1000\LLLLLLLLLLL

        Filesize

        129B

        MD5

        6e011b87599e1340215ba333d48a0d25

        SHA1

        c846641c02706314cf2199bd4fc5c7b716ca9afa

        SHA256

        635f1ae6fc1f02c012f19adcd164905d0f2a1594243029a40f029fa4f2ee69e3

        SHA512

        0ca47b3da6eb49a754cac96af1ac82b6c84dedf6243e0b56d2646ee19ba9cf734829e0563852d6c5d0d46736a13b52bfe59b1eadfe29bd1916e9f520b13e0920

      • C:\$Recycle.Bin\S-1-5-21-1283023626-844874658-3193756055-1000\MMMMMMMMMMM

        Filesize

        129B

        MD5

        6e011b87599e1340215ba333d48a0d25

        SHA1

        c846641c02706314cf2199bd4fc5c7b716ca9afa

        SHA256

        635f1ae6fc1f02c012f19adcd164905d0f2a1594243029a40f029fa4f2ee69e3

        SHA512

        0ca47b3da6eb49a754cac96af1ac82b6c84dedf6243e0b56d2646ee19ba9cf734829e0563852d6c5d0d46736a13b52bfe59b1eadfe29bd1916e9f520b13e0920

      • C:\$Recycle.Bin\S-1-5-21-1283023626-844874658-3193756055-1000\NNNNNNNNNNN

        Filesize

        129B

        MD5

        6e011b87599e1340215ba333d48a0d25

        SHA1

        c846641c02706314cf2199bd4fc5c7b716ca9afa

        SHA256

        635f1ae6fc1f02c012f19adcd164905d0f2a1594243029a40f029fa4f2ee69e3

        SHA512

        0ca47b3da6eb49a754cac96af1ac82b6c84dedf6243e0b56d2646ee19ba9cf734829e0563852d6c5d0d46736a13b52bfe59b1eadfe29bd1916e9f520b13e0920

      • C:\$Recycle.Bin\S-1-5-21-1283023626-844874658-3193756055-1000\OOOOOOOOOOO

        Filesize

        129B

        MD5

        6e011b87599e1340215ba333d48a0d25

        SHA1

        c846641c02706314cf2199bd4fc5c7b716ca9afa

        SHA256

        635f1ae6fc1f02c012f19adcd164905d0f2a1594243029a40f029fa4f2ee69e3

        SHA512

        0ca47b3da6eb49a754cac96af1ac82b6c84dedf6243e0b56d2646ee19ba9cf734829e0563852d6c5d0d46736a13b52bfe59b1eadfe29bd1916e9f520b13e0920

      • C:\$Recycle.Bin\S-1-5-21-1283023626-844874658-3193756055-1000\PPPPPPPPPPP

        Filesize

        129B

        MD5

        6e011b87599e1340215ba333d48a0d25

        SHA1

        c846641c02706314cf2199bd4fc5c7b716ca9afa

        SHA256

        635f1ae6fc1f02c012f19adcd164905d0f2a1594243029a40f029fa4f2ee69e3

        SHA512

        0ca47b3da6eb49a754cac96af1ac82b6c84dedf6243e0b56d2646ee19ba9cf734829e0563852d6c5d0d46736a13b52bfe59b1eadfe29bd1916e9f520b13e0920

      • C:\$Recycle.Bin\S-1-5-21-1283023626-844874658-3193756055-1000\QQQQQQQQQQQ

        Filesize

        129B

        MD5

        6e011b87599e1340215ba333d48a0d25

        SHA1

        c846641c02706314cf2199bd4fc5c7b716ca9afa

        SHA256

        635f1ae6fc1f02c012f19adcd164905d0f2a1594243029a40f029fa4f2ee69e3

        SHA512

        0ca47b3da6eb49a754cac96af1ac82b6c84dedf6243e0b56d2646ee19ba9cf734829e0563852d6c5d0d46736a13b52bfe59b1eadfe29bd1916e9f520b13e0920

      • C:\$Recycle.Bin\S-1-5-21-1283023626-844874658-3193756055-1000\RRRRRRRRRRR

        Filesize

        129B

        MD5

        6e011b87599e1340215ba333d48a0d25

        SHA1

        c846641c02706314cf2199bd4fc5c7b716ca9afa

        SHA256

        635f1ae6fc1f02c012f19adcd164905d0f2a1594243029a40f029fa4f2ee69e3

        SHA512

        0ca47b3da6eb49a754cac96af1ac82b6c84dedf6243e0b56d2646ee19ba9cf734829e0563852d6c5d0d46736a13b52bfe59b1eadfe29bd1916e9f520b13e0920

      • C:\$Recycle.Bin\S-1-5-21-1283023626-844874658-3193756055-1000\SSSSSSSSSSS

        Filesize

        129B

        MD5

        6e011b87599e1340215ba333d48a0d25

        SHA1

        c846641c02706314cf2199bd4fc5c7b716ca9afa

        SHA256

        635f1ae6fc1f02c012f19adcd164905d0f2a1594243029a40f029fa4f2ee69e3

        SHA512

        0ca47b3da6eb49a754cac96af1ac82b6c84dedf6243e0b56d2646ee19ba9cf734829e0563852d6c5d0d46736a13b52bfe59b1eadfe29bd1916e9f520b13e0920

      • C:\$Recycle.Bin\S-1-5-21-1283023626-844874658-3193756055-1000\TTTTTTTTTTT

        Filesize

        129B

        MD5

        6e011b87599e1340215ba333d48a0d25

        SHA1

        c846641c02706314cf2199bd4fc5c7b716ca9afa

        SHA256

        635f1ae6fc1f02c012f19adcd164905d0f2a1594243029a40f029fa4f2ee69e3

        SHA512

        0ca47b3da6eb49a754cac96af1ac82b6c84dedf6243e0b56d2646ee19ba9cf734829e0563852d6c5d0d46736a13b52bfe59b1eadfe29bd1916e9f520b13e0920

      • C:\$Recycle.Bin\S-1-5-21-1283023626-844874658-3193756055-1000\UUUUUUUUUUU

        Filesize

        129B

        MD5

        6e011b87599e1340215ba333d48a0d25

        SHA1

        c846641c02706314cf2199bd4fc5c7b716ca9afa

        SHA256

        635f1ae6fc1f02c012f19adcd164905d0f2a1594243029a40f029fa4f2ee69e3

        SHA512

        0ca47b3da6eb49a754cac96af1ac82b6c84dedf6243e0b56d2646ee19ba9cf734829e0563852d6c5d0d46736a13b52bfe59b1eadfe29bd1916e9f520b13e0920

      • C:\$Recycle.Bin\S-1-5-21-1283023626-844874658-3193756055-1000\VVVVVVVVVVV

        Filesize

        129B

        MD5

        6e011b87599e1340215ba333d48a0d25

        SHA1

        c846641c02706314cf2199bd4fc5c7b716ca9afa

        SHA256

        635f1ae6fc1f02c012f19adcd164905d0f2a1594243029a40f029fa4f2ee69e3

        SHA512

        0ca47b3da6eb49a754cac96af1ac82b6c84dedf6243e0b56d2646ee19ba9cf734829e0563852d6c5d0d46736a13b52bfe59b1eadfe29bd1916e9f520b13e0920

      • C:\$Recycle.Bin\S-1-5-21-1283023626-844874658-3193756055-1000\WWWWWWWWWWW

        Filesize

        129B

        MD5

        6e011b87599e1340215ba333d48a0d25

        SHA1

        c846641c02706314cf2199bd4fc5c7b716ca9afa

        SHA256

        635f1ae6fc1f02c012f19adcd164905d0f2a1594243029a40f029fa4f2ee69e3

        SHA512

        0ca47b3da6eb49a754cac96af1ac82b6c84dedf6243e0b56d2646ee19ba9cf734829e0563852d6c5d0d46736a13b52bfe59b1eadfe29bd1916e9f520b13e0920

      • C:\$Recycle.Bin\S-1-5-21-1283023626-844874658-3193756055-1000\XXXXXXXXXXX

        Filesize

        129B

        MD5

        6e011b87599e1340215ba333d48a0d25

        SHA1

        c846641c02706314cf2199bd4fc5c7b716ca9afa

        SHA256

        635f1ae6fc1f02c012f19adcd164905d0f2a1594243029a40f029fa4f2ee69e3

        SHA512

        0ca47b3da6eb49a754cac96af1ac82b6c84dedf6243e0b56d2646ee19ba9cf734829e0563852d6c5d0d46736a13b52bfe59b1eadfe29bd1916e9f520b13e0920

      • C:\$Recycle.Bin\S-1-5-21-1283023626-844874658-3193756055-1000\YYYYYYYYYYY

        Filesize

        129B

        MD5

        6e011b87599e1340215ba333d48a0d25

        SHA1

        c846641c02706314cf2199bd4fc5c7b716ca9afa

        SHA256

        635f1ae6fc1f02c012f19adcd164905d0f2a1594243029a40f029fa4f2ee69e3

        SHA512

        0ca47b3da6eb49a754cac96af1ac82b6c84dedf6243e0b56d2646ee19ba9cf734829e0563852d6c5d0d46736a13b52bfe59b1eadfe29bd1916e9f520b13e0920

      • C:\$Recycle.Bin\S-1-5-21-1283023626-844874658-3193756055-1000\desktop.ini

        Filesize

        129B

        MD5

        6e011b87599e1340215ba333d48a0d25

        SHA1

        c846641c02706314cf2199bd4fc5c7b716ca9afa

        SHA256

        635f1ae6fc1f02c012f19adcd164905d0f2a1594243029a40f029fa4f2ee69e3

        SHA512

        0ca47b3da6eb49a754cac96af1ac82b6c84dedf6243e0b56d2646ee19ba9cf734829e0563852d6c5d0d46736a13b52bfe59b1eadfe29bd1916e9f520b13e0920

      • C:\AFfGduKAp.README.txt

        Filesize

        388B

        MD5

        2c14b79c5df401a312e4c3eaf12b6b71

        SHA1

        5c45b1acc517676485afa15e4dd3f99fbda7cda4

        SHA256

        f4f5a83157405e6d4e49758d3f325ee5adb9448cc7973978f2c0e32a000678a4

        SHA512

        fb504fcb4c3d73812d4dddede978a4a2f841d3be75de722d46a78c1c7db1d54af2bba2e2f1250d58ecd2742238ba1c19e68d1196c3aaf0eae657a8e516d9c48b

      • C:\ProgramData\477D.tmp

        Filesize

        14KB

        MD5

        294e9f64cb1642dd89229fff0592856b

        SHA1

        97b148c27f3da29ba7b18d6aee8a0db9102f47c9

        SHA256

        917e115cc403e29b4388e0d175cbfac3e7e40ca1742299fbdb353847db2de7c2

        SHA512

        b87d531890bf1577b9b4af41dddb2cdbbfa164cf197bd5987df3a3075983645a3acba443e289b7bfd338422978a104f55298fbfe346872de0895bde44adc89cf

      • C:\ProgramData\477D.tmp

        Filesize

        14KB

        MD5

        294e9f64cb1642dd89229fff0592856b

        SHA1

        97b148c27f3da29ba7b18d6aee8a0db9102f47c9

        SHA256

        917e115cc403e29b4388e0d175cbfac3e7e40ca1742299fbdb353847db2de7c2

        SHA512

        b87d531890bf1577b9b4af41dddb2cdbbfa164cf197bd5987df3a3075983645a3acba443e289b7bfd338422978a104f55298fbfe346872de0895bde44adc89cf

      • C:\Users\Admin\AppData\Local\Temp\DDDDDDD

        Filesize

        146KB

        MD5

        175d5ec547d19e69ea79844c23ae6ceb

        SHA1

        4033fdb30211e1e2ec08b1ef1dfbe013525d5a49

        SHA256

        7e40358ba0985bf6ed85f677b058d81a2e6f3a98e83bb10b64bdfe8ac18fef44

        SHA512

        593176d6ae906dfca6556f933668337b59d731a79fd50c70dca77d9e0ee1b4a340234cf6d1232bae63cd2761845fc99e7db4b3ac5299d0c3406054e1b4552f66

      • \ProgramData\477D.tmp

        Filesize

        14KB

        MD5

        294e9f64cb1642dd89229fff0592856b

        SHA1

        97b148c27f3da29ba7b18d6aee8a0db9102f47c9

        SHA256

        917e115cc403e29b4388e0d175cbfac3e7e40ca1742299fbdb353847db2de7c2

        SHA512

        b87d531890bf1577b9b4af41dddb2cdbbfa164cf197bd5987df3a3075983645a3acba443e289b7bfd338422978a104f55298fbfe346872de0895bde44adc89cf

      • memory/1588-891-0x00000000023E5000-0x0000000002403000-memory.dmp

        Filesize

        120KB

      • memory/2040-285-0x0000000000CB0000-0x0000000000CF0000-memory.dmp

        Filesize

        256KB

      • memory/2040-290-0x0000000000CB0000-0x0000000000CF0000-memory.dmp

        Filesize

        256KB

      • memory/2040-313-0x0000000000CB0000-0x0000000000CF0000-memory.dmp

        Filesize

        256KB