Analysis

  • max time kernel
    121s
  • max time network
    122s
  • platform
    windows7_x64
  • resource
    win7-20231129-en
  • resource tags

    arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
  • submitted
    18-06-2024 21:03

General

  • Target

    4767854567ee5cfb28dae9181c9f076e7281996d3963524f10ce26cfdd342f42.exe

  • Size

    89KB

  • MD5

    ee62df18944db6cb32e98eba83b9f960

  • SHA1

    859ab73f33ff8d5d1ddf78a5e9d6aa34f15c9dfa

  • SHA256

    4767854567ee5cfb28dae9181c9f076e7281996d3963524f10ce26cfdd342f42

  • SHA512

    df0a5ffbbd7194d6ef2015c564351be1b2b767bb29bbdf32c90734a92fae99b61fd584f6241e40dc604f0a74dc937d98225fc1791b1db54231daf6191a5c21fb

  • SSDEEP

    1536:1vXFnGvewvD/F3nICjRM5CELyYk2Iloa4GQeRCIiS8qRj4dh0NKYnEMvB:Dw3FE7yH2koa4ciS8qp4dh03EMvB

Malware Config

Signatures

  • Renames multiple (269) files with added filename extension

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

  • UPX dump on OEP (original entry point) 2 IoCs
  • 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.

  • UPX packed file 2 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

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

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

  • Suspicious behavior: EnumeratesProcesses 12 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\4767854567ee5cfb28dae9181c9f076e7281996d3963524f10ce26cfdd342f42.exe
    "C:\Users\Admin\AppData\Local\Temp\4767854567ee5cfb28dae9181c9f076e7281996d3963524f10ce26cfdd342f42.exe"
    1⤵
    • Loads dropped DLL
    • Drops desktop.ini file(s)
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2784
    • C:\ProgramData\170A.tmp
      "C:\ProgramData\170A.tmp"
      2⤵
      • Deletes itself
      • Executes dropped EXE
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Suspicious behavior: RenamesItself
      • Suspicious use of WriteProcessMemory
      PID:2484
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C DEL /F /Q C:\PROGRA~3\170A.tmp >> NUL
        3⤵
          PID:944
    • C:\Windows\system32\AUDIODG.EXE
      C:\Windows\system32\AUDIODG.EXE 0x14c
      1⤵
        PID:2332

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\$Recycle.Bin\S-1-5-21-3627615824-4061627003-3019543961-1000\desktop.ini

        Filesize

        129B

        MD5

        7a9024d1ba6fdeb156441a89fb548364

        SHA1

        c615c4736aa0a264883459dc54d1b8be27385a4f

        SHA256

        dd79c838cc74412806325aa8072efa586b8a1b196abfd826e23a57069476c4c8

        SHA512

        a7a7c30da0eae2d7deeacf52eeaed7a2a87d20492c3b05e9123d232c8c8931265bed8792686af928edf296f5c8f053b815bde3d768e5b02cbead04eb0ddb4749

      • C:\5rFqhOnPD.README.txt

        Filesize

        556B

        MD5

        d7f37299d70c4bd3980d31030c89ac9e

        SHA1

        249fa232d1ea332fb263c1a290628281787509e5

        SHA256

        74c0ae45d99e1ccfafb52866dfc916c2ba287fb67821db634e2d0d07cf8cf01b

        SHA512

        7a14b00b9043cd1677c209e512a37238d7ec3502273b146c91aa162cb20a5f51786f281e02cf9ae9afbc49f6b8cbcf47f1f69d6aeb02293e57046f58c22e72f9

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

        Filesize

        89KB

        MD5

        a0c50a2e27991e59f99f555cc5942716

        SHA1

        bfc6284db474283c879ca2e4e9b5212ebeed74ce

        SHA256

        d8c2a58fc8262ec2273ef63fa7d98937ac7b28ed5b4d4010a779fe278562fe44

        SHA512

        d96dfa2176eb1e74163fc9d446adbfceed5c58a3961d2712d23507e53892fc864e274e28bc70818105edf26455c087042ea5f40e8dff77178004a1aa3624fb54

      • F:\$RECYCLE.BIN\S-1-5-21-3627615824-4061627003-3019543961-1000\DDDDDDDDDDD

        Filesize

        129B

        MD5

        965c3ba200ad31dbb65334747acd7df3

        SHA1

        ab672c06fc47cbed2d05d973eaa198e8cfe51ac2

        SHA256

        42343601c314c1cc96a19523353c7fbac2be578c5e31ebe5be5dd492c700e58b

        SHA512

        d20771fdb02e58703c739ec5eb0a9eb898e39fb536c162a500450156925c180e386812f120186f8965d638a36054b4680ea735a32d2eb47cd839f7cfa1a6ac1e

      • \ProgramData\170A.tmp

        Filesize

        14KB

        MD5

        294e9f64cb1642dd89229fff0592856b

        SHA1

        97b148c27f3da29ba7b18d6aee8a0db9102f47c9

        SHA256

        917e115cc403e29b4388e0d175cbfac3e7e40ca1742299fbdb353847db2de7c2

        SHA512

        b87d531890bf1577b9b4af41dddb2cdbbfa164cf197bd5987df3a3075983645a3acba443e289b7bfd338422978a104f55298fbfe346872de0895bde44adc89cf

      • memory/2484-774-0x0000000000401000-0x0000000000404000-memory.dmp

        Filesize

        12KB

      • memory/2484-777-0x0000000000400000-0x0000000000407000-memory.dmp

        Filesize

        28KB

      • memory/2784-0-0x0000000000C40000-0x0000000000C6B000-memory.dmp

        Filesize

        172KB

      • memory/2784-1-0x0000000002160000-0x00000000021A0000-memory.dmp

        Filesize

        256KB

      • memory/2784-776-0x0000000000C40000-0x0000000000C6B000-memory.dmp

        Filesize

        172KB