Overview

overview

10

Static

static

10

ransom/Build.bat

windows7-x64

3

ransom/Build.bat

windows10-2004-x64

3

ransom/Build/LB3.exe

windows7-x64

9

ransom/Build/LB3.exe

windows10-2004-x64

9

ransom/Bui...or.exe

windows7-x64

7

ransom/Bui...or.exe

windows10-2004-x64

7

ransom/Bui...in.dll

windows7-x64

9

ransom/Bui...in.dll

windows10-2004-x64

7

ransom/Bui...32.dll

windows7-x64

3

ransom/Bui...32.dll

windows10-2004-x64

3

ransom/Bui...ss.dll

windows7-x64

10

ransom/Bui...ss.dll

windows10-2004-x64

10

ransom/Bui...ss.exe

windows7-x64

10

ransom/Bui...ss.exe

windows10-2004-x64

10

ransom/builder.exe

windows7-x64

1

ransom/builder.exe

windows10-2004-x64

3

ransom/keygen.exe

windows7-x64

1

ransom/keygen.exe

windows10-2004-x64

3

Analysis

  • max time kernel
    149s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25-11-2024 01:10

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General

  • Target

    ransom/Build/LB3.exe

  • Size

    145KB

  • MD5

    b2cb742a43762106fc03fa1e26fd4f68

  • SHA1

    aef4e9199b06b835b6e677c0910d3ed6fdf96ef3

  • SHA256

    f4dcf20fcdd95d241eadcd88ce30998189d0682132456e9254321a8d6d281611

  • SHA512

    d0521e8a496e53a309acf7f9d388e684bfa068cc77d23ae6a7da75e6dea962b2a9e3dd5a27dc5e45c054aa025e3ff1a3c237a996aab2fbcfaa68483481ca4975

  • SSDEEP

    3072:5qJogYkcSNm9V7D58PleQQuloQwssCnT:5q2kc4m9tDcQvuiQfD

Score
9/10
defense_evasiondiscoveryransomwarespywarestealer

Malware Config

Signatures

  • Renames multiple (644) files with added filename extension

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

    ransomware
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Reads user/profile data of web browsers 3 TTPs

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

    spywarestealer
  • Drops desktop.ini file(s) 2 IoCs
  • Indicator Removal: File Deletion 1 TTPs

    Adversaries may delete files left behind by the actions of their intrusion activity.

    defense_evasion
  • Drops file in System32 directory 4 IoCs
  • Sets desktop wallpaper using registry 2 TTPs 2 IoCs
    ransomware
  • Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

    discovery
  • Checks processor information in registry 2 TTPs 3 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Modifies Control Panel 2 IoCs
    evasion
  • Modifies registry class 5 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: RenamesItself 26 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of SetWindowsHookEx 13 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ransom\Build\LB3.exe
    "C:\Users\Admin\AppData\Local\Temp\ransom\Build\LB3.exe"
    1⤵
    • Drops desktop.ini file(s)
    • Sets desktop wallpaper using registry
    • System Location Discovery: System Language Discovery
    • Modifies Control Panel
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:5044
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
      • Drops file in System32 directory
      PID:2724
    • C:\ProgramData\F7EE.tmp
      "C:\ProgramData\F7EE.tmp"
      2⤵
      • Checks computer location settings
      • Deletes itself
      • Executes dropped EXE
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: RenamesItself
      • Suspicious use of WriteProcessMemory
      PID:3612
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C DEL /F /Q C:\PROGRA~3\F7EE.tmp >> NUL
        3⤵
        • System Location Discovery: System Language Discovery
        PID:3036
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k PrintWorkflow -s PrintWorkflowUserSvc
    1⤵
      PID:4220
    • C:\Windows\system32\printfilterpipelinesvc.exe
      C:\Windows\system32\printfilterpipelinesvc.exe -Embedding
      1⤵
      • Drops file in System32 directory
      • Suspicious use of WriteProcessMemory
      PID:1040
      • C:\Program Files\Microsoft Office\root\Office16\ONENOTE.EXE
        /insertdoc "C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\{495F6490-D799-4AD2-9889-75CFB19337A9}.xps" 133769706805470000
        2⤵
        • Checks processor information in registry
        • Enumerates system info in registry
        • Suspicious use of SetWindowsHookEx
        PID:4744

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\$Recycle.Bin\S-1-5-21-2045521122-590294423-3465680274-1000\KKKKKKKKKKK
      Filesize

      129B

      MD5

      9b3c31a8949f5c82ac5073fc31de9101

      SHA1

      0b3747de63da3f854eb3d6bd1dba4b21b3573aa4

      SHA256

      89648f10bab3d6834cd277c398dce474174c47f97bf8749d41bfbc7c9e06a6e2

      SHA512

      a21277bfdd50ca31d1cf1d8d37e89c16248db48f3188da4171b5910bf73ddb2937c6999db74be04cf87f15a6cf900b54fb27a285574449ed0bea6a53bc909938

      Download Submit

    • C:\BNzPckH0e.README.txt
      Filesize

      93B

      MD5

      eaebdbc14b3c2ecdcec757fc361f5589

      SHA1

      02ec5589c9f3c671c464671faaf1b8343d849490

      SHA256

      0f037f3ac40aa8e999e3394d3741594b3410581f89eb467863e0ff30fa2417da

      SHA512

      14f5876fd27dbff0784e851e1c2fe4c68f70dc3b0cc2e95f10ab28bc872f90e82bb590f441379b73579c54680132a6961d216b9c18cd9648f9a45d4a72db660f

      Download Submit

    • C:\ProgramData\F7EE.tmp
      Filesize

      14KB

      MD5

      294e9f64cb1642dd89229fff0592856b

      SHA1

      97b148c27f3da29ba7b18d6aee8a0db9102f47c9

      SHA256

      917e115cc403e29b4388e0d175cbfac3e7e40ca1742299fbdb353847db2de7c2

      SHA512

      b87d531890bf1577b9b4af41dddb2cdbbfa164cf197bd5987df3a3075983645a3acba443e289b7bfd338422978a104f55298fbfe346872de0895bde44adc89cf

      Download Submit

    • C:\Users\Admin\AppData\Local\Temp\ransom\Build\DDDDDDD
      Filesize

      145KB

      MD5

      92444549eafc41f7eccab5004a5ded3d

      SHA1

      7610633764c9165526b9f79419cbc6e51348fd8b

      SHA256

      6a5d41451302c7f8d556a712c2a07921ad548d9115cc61feba51c3098ec3d4e2

      SHA512

      647a1d051b8d7da14772ccf2aefa595e1536f613491b6048133e58bebff13b63ec03b53e5fc8d4059dbd06321ee7404e6223738c8f72a02c6f93a27d63cab853

      Download Submit

    • C:\Users\Admin\Documents\OneNote Notebooks\My Notebook\Open Notebook.onetoc2
      Filesize

      4KB

      MD5

      c2e4d23d1575ad62d11875d6e58d9813

      SHA1

      851e56817200fde5a4721ab1894c85238f8aff9b

      SHA256

      fae7dac3b33afa8338b61c37759a8fd21c4e8f7cb03be7f40611a5b318208e2d

      SHA512

      fe05ec86c2f95beb5e6c7fa63f6a421fa9fb4c5b191225e9b05ceefba5b1419b22f34cbbc72bbd10aa64e17eb4606d4f1d7221ef22b138da1963f4ea3100a4c5

      Download Submit

    • F:\$RECYCLE.BIN\S-1-5-21-2045521122-590294423-3465680274-1000\DDDDDDDDDDD
      Filesize

      129B

      MD5

      7443e897a8d5b4a03f8b066c5f8d0be4

      SHA1

      b14e87791e206bd59bf369e787bad49d2b56e053

      SHA256

      8f5f9bf99b3468090ebab7f5077efa931e24c43cd53d229ef86b7e9d7734ce0e

      SHA512

      0747b8a08b9f274d3354f0b759821d907849e4024ce8cba9f3ceb978774b1d6b5283c8a2cd7a4ccc8c9f7639c157e17c39c0dff839bd985d05064fc0dea4047c

      Download Submit

    • memory/4744-3003-0x00007FF845D30000-0x00007FF845D40000-memory.dmp

      Filesize

      64KB

      Download

    • memory/4744-3000-0x00007FF845D30000-0x00007FF845D40000-memory.dmp

      Filesize

      64KB

      Download

    • memory/4744-3002-0x00007FF845D30000-0x00007FF845D40000-memory.dmp

      Filesize

      64KB

      Download

    • memory/4744-3001-0x00007FF845D30000-0x00007FF845D40000-memory.dmp

      Filesize

      64KB

      Download

    • memory/4744-3004-0x00007FF845D30000-0x00007FF845D40000-memory.dmp

      Filesize

      64KB

      Download

    • memory/4744-3033-0x00007FF843660000-0x00007FF843670000-memory.dmp

      Filesize

      64KB

      Download

    • memory/4744-3034-0x00007FF843660000-0x00007FF843670000-memory.dmp

      Filesize

      64KB

      Download

    • memory/5044-2983-0x00000000028F0000-0x0000000002900000-memory.dmp

      Filesize

      64KB

      Download

    • memory/5044-2982-0x00000000028F0000-0x0000000002900000-memory.dmp

      Filesize

      64KB

      Download

    • memory/5044-2984-0x00000000028F0000-0x0000000002900000-memory.dmp

      Filesize

      64KB

      Download

    • memory/5044-0-0x00000000028F0000-0x0000000002900000-memory.dmp

      Filesize

      64KB

      Download

    • memory/5044-1-0x00000000028F0000-0x0000000002900000-memory.dmp

      Filesize

      64KB

      Download

    • memory/5044-2-0x00000000028F0000-0x0000000002900000-memory.dmp

      Filesize

      64KB

      Download