Analysis

  • max time kernel
    94s
  • max time network
    146s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14-01-2025 01:40

General

  • Target

    ransomware.exe

  • Size

    147KB

  • MD5

    c09185c157831e4915c255d7002941f4

  • SHA1

    beca597f2c2c120c3d74163501a81f56664ff4f7

  • SHA256

    6f3d87f3dcfd248e64d26cf338a19f41a6f93affdde5fab071a631ff38637757

  • SHA512

    a843854ca79f4d98938635612d20f3d5b79d8661ee91d1ae130b2deffe95e44d7028f76b8b221c87fab0638afe5baf3c55e8348f8aa10dddc90133167a3c17bf

  • SSDEEP

    3072:SqJogYkcSNm9V7DnfX/91c6G+Mqc+2EIEMF+T:Sq2kc4m9tDnfXPc6g+2XEMF

Malware Config

Extracted

Path

C:\5VFg9o5tW.README.txt

Ransom Note
------Dear managers!------ If you are reading this, it means your network has been attacked. What does that mean? We hacked your network and now all your files, documents, client database, projects and other important data safely encrypted with reliable algorithms. we also have a copy of all your data. WARNING!!! You don't have to go to the POLICE, etc. Otherwise we will not be able to help you. You cannot acces the files right now. But do not worry. You can get it back! It is easy to recover in a few steps. As proof, we can decrypt any 3 files you provide. We are not interested to ruin your business. We want to get ransom and be happy. Please bring this information to your team leaders as soon as possible. In case of a successfull transaction, we will restore your systems within 4-6 hours and also provide security recommendations. -----------------------WARNING----------------------- If you modify files - our decrypt software won't able to recover data If you use third party software - you can damage/modify files (see item 1) You nedd cipher key / our decrypt software to restore you files. The police or authorities will not be able to help you get the cipher key. We encourage you to consider your decisions. -----------------------RECOVERY----------------------- Use email: [email protected] Alternative email address: [email protected] ([email protected]) ID message: c5337115f1d1a

Signatures

  • Renames multiple (639) 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.

  • 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.

  • 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\ransomware.exe
    "C:\Users\Admin\AppData\Local\Temp\ransomware.exe"
    1⤵
    • Drops desktop.ini file(s)
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1228
    • C:\ProgramData\8A7D.tmp
      "C:\ProgramData\8A7D.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:2656
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C DEL /F /Q C:\PROGRA~3\8A7D.tmp >> NUL
        3⤵
        • System Location Discovery: System Language Discovery
        PID:1032

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\$Recycle.Bin\S-1-5-21-4089630652-1596403869-279772308-1000\AAAAAAAAAAA

    Filesize

    129B

    MD5

    6327675b376031d39fc0388f2f6efbe0

    SHA1

    503fff9a387b0810f5b4bdc88a5999cd6465bee1

    SHA256

    04838459a4a59504a3077236e9e146fb926c6c74e495bb6c1a9e97ce8b2ce94a

    SHA512

    eb80e54f76e0d1c9d72a963a2b2d1005016e2afefa3805786a34b96d31a5fb3ed606ad72a56a066a311cccaa8849cce22f14767bb50e8cd86c5ce9fcdb37f691

  • C:\5VFg9o5tW.README.txt

    Filesize

    1KB

    MD5

    17e3459297cd54cf124d089248ff395b

    SHA1

    617e2ddd0a69a242d4da510d32670a170ff667fa

    SHA256

    94aaefad5d5a9fea79e9271941a5e874951cceac46a110ef0f1de841051f6421

    SHA512

    280536a672423a4bf4df1cb7cd49bd0a7a3f731dfe4543359a84d3a82d734e3882386b336af62a77e2763cbe7fe9e4ff6ae852241dd61ab702cda1b0d2f02e13

  • C:\ProgramData\8A7D.tmp

    Filesize

    14KB

    MD5

    294e9f64cb1642dd89229fff0592856b

    SHA1

    97b148c27f3da29ba7b18d6aee8a0db9102f47c9

    SHA256

    917e115cc403e29b4388e0d175cbfac3e7e40ca1742299fbdb353847db2de7c2

    SHA512

    b87d531890bf1577b9b4af41dddb2cdbbfa164cf197bd5987df3a3075983645a3acba443e289b7bfd338422978a104f55298fbfe346872de0895bde44adc89cf

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

    Filesize

    147KB

    MD5

    b0e64a04e16cf39817944f1548d9124c

    SHA1

    3d5176a35aca9cbc9a6f6a63699abf020167f6fa

    SHA256

    878fcd7dca32ccbe19019d0b7c64be71c71fb12f7ce3c741b01af12b0a7c8601

    SHA512

    5379b82b41e508bf4e081ec4b2e5864e51530da06c3b6d1771fe759facb0c52fbe12febcff9d2b9be0ea5e209a7c15e3d97ec69d58cb1a28773432fad7e755ad

  • F:\$RECYCLE.BIN\S-1-5-21-4089630652-1596403869-279772308-1000\DDDDDDDDDDD

    Filesize

    129B

    MD5

    ae61950bb32c762d9ac4a6b7add2ea8d

    SHA1

    c05e031914c01d4dd7dfc497a8e7ef915a3b0b3e

    SHA256

    a62dd83ad3d2a139c54e9ea5db9465048d46fd039556bc9bde5850fad51d77c0

    SHA512

    b1cba96108f7d4381362a39bf2c2c8508dfa86995d1549c3a8be890e881dc35a804f808475fecf4683179f43f107bc87f63d7d791a57393ca14494b261622b19

  • memory/1228-0-0x0000000002A80000-0x0000000002A90000-memory.dmp

    Filesize

    64KB

  • memory/1228-2-0x0000000002A80000-0x0000000002A90000-memory.dmp

    Filesize

    64KB

  • memory/1228-1-0x0000000002A80000-0x0000000002A90000-memory.dmp

    Filesize

    64KB

  • memory/1228-2822-0x0000000002A80000-0x0000000002A90000-memory.dmp

    Filesize

    64KB

  • memory/1228-2818-0x0000000002A80000-0x0000000002A90000-memory.dmp

    Filesize

    64KB

  • memory/2656-2821-0x000000007FDC0000-0x000000007FDC1000-memory.dmp

    Filesize

    4KB

  • memory/2656-2820-0x000000007FE20000-0x000000007FE21000-memory.dmp

    Filesize

    4KB

  • memory/2656-2819-0x000000007FE40000-0x000000007FE41000-memory.dmp

    Filesize

    4KB

  • memory/2656-2851-0x000000007FDE0000-0x000000007FDE1000-memory.dmp

    Filesize

    4KB

  • memory/2656-2852-0x000000007FE00000-0x000000007FE01000-memory.dmp

    Filesize

    4KB