Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    21-11-2024 20:45

General

  • Target

    0845a8c3be602a72e23a155b23ad554495bd558fa79e1bb849aa75f79d069194.exe

  • Size

    146KB

  • MD5

    33228a20a7e985f02e2ddd73cccde729

  • SHA1

    58ab960e629a609d135e1988c72f2991e5f76e30

  • SHA256

    0845a8c3be602a72e23a155b23ad554495bd558fa79e1bb849aa75f79d069194

  • SHA512

    075002dd1b0f8e536c1ff99d30368f5adfc90a2f3e7a74c9770119e7b54a5851236657b7edcb735d457e78a7e67b7c285b6ceaa6ca2907542ac208dfc8c9aabe

  • SSDEEP

    3072:36glyuxE4GsUPnliByocWepqFPUBwrqveV84:36gDBGpvEByocWe8MB4G

Malware Config

Signatures

  • Renames multiple (594) files with added filename extension

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

  • 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.

  • 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
  • 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.

  • Modifies Control Panel 2 IoCs
  • Modifies registry class 5 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: RenamesItself 26 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 7 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\0845a8c3be602a72e23a155b23ad554495bd558fa79e1bb849aa75f79d069194.exe
    "C:\Users\Admin\AppData\Local\Temp\0845a8c3be602a72e23a155b23ad554495bd558fa79e1bb849aa75f79d069194.exe"
    1⤵
    • 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:2228
    • C:\ProgramData\A6BF.tmp
      "C:\ProgramData\A6BF.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:4004
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C DEL /F /Q C:\PROGRA~3\A6BF.tmp >> NUL
        3⤵
        • System Location Discovery: System Language Discovery
        PID:2892

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\$Recycle.Bin\S-1-5-21-940901362-3608833189-1915618603-1000\BBBBBBBBBBB

    Filesize

    129B

    MD5

    f8134cc6774db8a4151d2298194e35bc

    SHA1

    3f6d79958e8f596cec17ea156cbc3bf7fb6fd5d9

    SHA256

    dea7910628c4d1e755cc8e48e6f14f36356533884dc2e736501dd4e8c2de3676

    SHA512

    fd885a5432d2265ef460446fb8bcaebc5a264ff0a5532d50bd71145c77547848d33af0bdc6989fe2ee4df80602fe83cbee1cb64bb89e21b5bc22be2598eedda5

  • C:\AFfGduKAp.README.txt

    Filesize

    388B

    MD5

    b428db0c87e45f5d763d279208a12b5c

    SHA1

    e720801e25a15ce1eed49406b2909ecf039c2e4d

    SHA256

    cc0ed5270884cb39e945d398355c837b9a27a7a76a81bcec3d90424a78246972

    SHA512

    0f2aea1fb3ae3e3bfbd09589765777e08f537d7ea7aa9859c311647437753465121f085641163a9f4e5544b5c48f3d559435f64a18546a09f2a1e1bd5059c180

  • C:\ProgramData\A6BF.tmp

    Filesize

    14KB

    MD5

    294e9f64cb1642dd89229fff0592856b

    SHA1

    97b148c27f3da29ba7b18d6aee8a0db9102f47c9

    SHA256

    917e115cc403e29b4388e0d175cbfac3e7e40ca1742299fbdb353847db2de7c2

    SHA512

    b87d531890bf1577b9b4af41dddb2cdbbfa164cf197bd5987df3a3075983645a3acba443e289b7bfd338422978a104f55298fbfe346872de0895bde44adc89cf

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

    Filesize

    146KB

    MD5

    0e3b31c654871c0cf7bacfd32f033737

    SHA1

    d54dd724dc2106c758c1e0b133c435b1daf2a3d0

    SHA256

    46830af0a99a87f3c913b989699c40212da5eb635d5611f9057dac95fb89c8ce

    SHA512

    264ce6e7d31f71cb24d3276362d2f9b3b856fe52d5b0e9a9053fdd31aa0fec3f12e7af80ea3d8c1cb2bcadbd600aef6e4c3835364c03d74e41fe563557f4ad7f

  • F:\$RECYCLE.BIN\S-1-5-21-940901362-3608833189-1915618603-1000\DDDDDDDDDDD

    Filesize

    129B

    MD5

    717c328e4523dc99db4f2e084812f610

    SHA1

    151b5efdafe846e22d06fdb09ebcac6c062afe43

    SHA256

    129490dd30a95cdb714a7f27e4229de9f5416dab474de9013a4049250ea5faa0

    SHA512

    17f4b9d9ba87bd58c1ce724ab2c981854e80fc407c545513611f06ee015be0372f91c21209504d8bda39cc917a64ba07120f64d9a332c8833c2b5ff215a1805f

  • memory/2228-2976-0x0000000002540000-0x0000000002550000-memory.dmp

    Filesize

    64KB

  • memory/2228-0-0x0000000002540000-0x0000000002550000-memory.dmp

    Filesize

    64KB

  • memory/2228-2981-0x0000000002540000-0x0000000002550000-memory.dmp

    Filesize

    64KB

  • memory/2228-2-0x0000000002540000-0x0000000002550000-memory.dmp

    Filesize

    64KB

  • memory/2228-1-0x0000000002540000-0x0000000002550000-memory.dmp

    Filesize

    64KB

  • memory/4004-2980-0x000000007FDC0000-0x000000007FDC1000-memory.dmp

    Filesize

    4KB

  • memory/4004-2979-0x000000007FE20000-0x000000007FE21000-memory.dmp

    Filesize

    4KB

  • memory/4004-2978-0x00000000026E0000-0x00000000026F0000-memory.dmp

    Filesize

    64KB

  • memory/4004-2977-0x000000007FE40000-0x000000007FE41000-memory.dmp

    Filesize

    4KB

  • memory/4004-3010-0x000000007FDE0000-0x000000007FDE1000-memory.dmp

    Filesize

    4KB

  • memory/4004-3011-0x000000007FE00000-0x000000007FE01000-memory.dmp

    Filesize

    4KB