Analysis

  • max time kernel
    122s
  • max time network
    122s
  • platform
    windows7_x64
  • resource
    win7-20240708-en
  • resource tags

    arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
  • submitted
    13-09-2024 00:24

General

  • Target

    2024-09-12_b21c2852af7dcd9ace66706377ba9c78_darkside.exe

  • Size

    146KB

  • MD5

    b21c2852af7dcd9ace66706377ba9c78

  • SHA1

    60ff856d7d54cbbd260c686bb91550187095e58a

  • SHA256

    aa7a61aeaeee53231fd2a8473895cbb2810baf9cd78ea3db6a984b03bc5eb68b

  • SHA512

    4307461cf0790acda6705aaefbf7330c425ea25f944166d3ba8c19809fe03953a552e35c5f95300b9aad8d227430bd173b568d51abbf6d296b964efcffdd07eb

  • SSDEEP

    3072:T6glyuxE4GsUPnliByocWepHUWKL10B17:T6gDBGpvEByocWeJ6IV

Malware Config

Signatures

  • Renames multiple (354) files with added filename extension

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

  • 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) 2 IoCs
  • Indicator Removal: File Deletion 1 TTPs

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

  • Sets desktop wallpaper using registry 2 TTPs 2 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 5 IoCs
  • 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.

  • Modifies Control Panel 2 IoCs
  • Modifies registry class 5 IoCs
  • Suspicious behavior: EnumeratesProcesses 14 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\2024-09-12_b21c2852af7dcd9ace66706377ba9c78_darkside.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-09-12_b21c2852af7dcd9ace66706377ba9c78_darkside.exe"
    1⤵
    • Loads dropped DLL
    • Drops desktop.ini file(s)
    • Sets desktop wallpaper using registry
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • System Location Discovery: System Language Discovery
    • Modifies Control Panel
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2076
    • C:\ProgramData\D8A3.tmp
      "C:\ProgramData\D8A3.tmp"
      2⤵
      • Deletes itself
      • Executes dropped EXE
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: RenamesItself
      • Suspicious use of WriteProcessMemory
      PID:980
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C DEL /F /Q C:\PROGRA~3\D8A3.tmp >> NUL
        3⤵
        • System Location Discovery: System Language Discovery
        PID:1760
  • C:\Windows\system32\AUDIODG.EXE
    C:\Windows\system32\AUDIODG.EXE 0x14c
    1⤵
      PID:2804

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\$Recycle.Bin\S-1-5-21-3551809350-4263495960-1443967649-1000\HHHHHHHHHHH

      Filesize

      129B

      MD5

      af19986e98fd66c0aff67a683458579b

      SHA1

      ac2056c43f83b62a905b46eaab03fa03f13e687d

      SHA256

      40d90ddf75f42c09b67a3db7058aba053b33b3104d34a5a0b84e9996d56da42b

      SHA512

      8098cf2dd3488e5d4837c5044984efe0be2dabdb43ed6729f6e26605233af0d87e4d6948ebef0b0a3cc12d30b401b3c9a6b4a89049ac0abe2ecafb5287ae1f5f

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

      Filesize

      146KB

      MD5

      fa286df43ba728e2ecb1d2d29893c2c3

      SHA1

      3b5a4bc378c885f7b61851ae98a29bc5c8e9c770

      SHA256

      3884fa19ef57c8c53ef67d734ee05e5892edda61f6c886e359ada555fc878b8b

      SHA512

      283d9f4330151abaf42eb431fef6fa0c72c817794e7d077ca7aa51d22e1649086f56db8a8973c196b9989d2b89389a4a1b68fc8c986b2ca0f7b3b9131e7443f7

    • C:\fjTsbCI2x.README.txt

      Filesize

      343B

      MD5

      72b1ffaeb7de456483f491ecceadb088

      SHA1

      ee1953abc295245ab01f35a4a823883826bf2b41

      SHA256

      eb892eac9899b995047733bb17acd4945eb42b7b49f2ee8ad52b8026bc0297a7

      SHA512

      c0e7cad617cf1490bb25fc47936edc3ae164b190ed34f2d2a50e7e84ce6e0d6712a6ba9ab351cca1589266078326a00317516c53fecf96f20eaefe15e92ce445

    • F:\$RECYCLE.BIN\S-1-5-21-3551809350-4263495960-1443967649-1000\desktop.ini

      Filesize

      129B

      MD5

      f4a86b43b05a9af4d5a4b80174499f17

      SHA1

      4894166e5a50278e25e83cb3a538ccf92d9c5dd9

      SHA256

      e9458705f52fbe0f9698f1d129208c4f250329cc2a23e6309982aef8710c1bf9

      SHA512

      3e03b60deff916a6b4dc3c2027b53f3ee8c28fc6f9896cca142f7b78f531c5f5a05d10e8c4a6d657dbeaff7771a4ace147f1dcdc95c8528f64159806a120a9e9

    • \ProgramData\D8A3.tmp

      Filesize

      14KB

      MD5

      294e9f64cb1642dd89229fff0592856b

      SHA1

      97b148c27f3da29ba7b18d6aee8a0db9102f47c9

      SHA256

      917e115cc403e29b4388e0d175cbfac3e7e40ca1742299fbdb353847db2de7c2

      SHA512

      b87d531890bf1577b9b4af41dddb2cdbbfa164cf197bd5987df3a3075983645a3acba443e289b7bfd338422978a104f55298fbfe346872de0895bde44adc89cf

    • memory/980-893-0x000000007EF80000-0x000000007EF81000-memory.dmp

      Filesize

      4KB

    • memory/980-892-0x0000000000350000-0x0000000000390000-memory.dmp

      Filesize

      256KB

    • memory/980-891-0x000000007EF20000-0x000000007EF21000-memory.dmp

      Filesize

      4KB

    • memory/980-890-0x0000000000350000-0x0000000000390000-memory.dmp

      Filesize

      256KB

    • memory/980-888-0x000000007EFA0000-0x000000007EFA1000-memory.dmp

      Filesize

      4KB

    • memory/980-923-0x000000007EF60000-0x000000007EF61000-memory.dmp

      Filesize

      4KB

    • memory/980-922-0x000000007EF40000-0x000000007EF41000-memory.dmp

      Filesize

      4KB

    • memory/2076-0-0x00000000022F0000-0x0000000002330000-memory.dmp

      Filesize

      256KB

    • memory/2076-1-0x00000000022F0000-0x0000000002330000-memory.dmp

      Filesize

      256KB