Overview

overview

10

Static

static

10

1/0178b79b...bd.exe

windows7-x64

10

1/0178b79b...bd.exe

windows10-2004-x64

10

1/0280cde4...60.exe

windows7-x64

10

1/0280cde4...60.exe

windows10-2004-x64

10

1/08b76206...65.exe

windows7-x64

10

1/08b76206...65.exe

windows10-2004-x64

10

1/0e4fc438...91.exe

windows7-x64

3

1/0e4fc438...91.exe

windows10-2004-x64

10

1/0fb86a8b...05.exe

windows7-x64

10

1/0fb86a8b...05.exe

windows10-2004-x64

10

1/25898c73...8f.exe

windows7-x64

10

1/25898c73...8f.exe

windows10-2004-x64

10

1/2c2e9491...3c.exe

windows7-x64

3

1/2c2e9491...3c.exe

windows10-2004-x64

10

1/2ef0f582...2e.exe

windows7-x64

3

1/2ef0f582...2e.exe

windows10-2004-x64

10

1/39884fc0...82.exe

windows7-x64

10

1/39884fc0...82.exe

windows10-2004-x64

10

1/3a72ecec...8a.exe

windows7-x64

10

1/3a72ecec...8a.exe

windows10-2004-x64

10

1/3bfcb4f7...71.exe

windows7-x64

10

1/3bfcb4f7...71.exe

windows10-2004-x64

10

1/4103411f...f5.exe

windows7-x64

10

1/4103411f...f5.exe

windows10-2004-x64

10

1/4e0fdb84...95.exe

windows7-x64

3

1/4e0fdb84...95.exe

windows10-2004-x64

7

1/5297372f...33.exe

windows7-x64

5

1/5297372f...33.exe

windows10-2004-x64

5

1/68292f38...e4.exe

windows7-x64

3

1/68292f38...e4.exe

windows10-2004-x64

10

1/6da4696b...e5.exe

windows7-x64

7

1/6da4696b...e5.exe

windows10-2004-x64

7

Analysis

  • max time kernel
    121s
  • max time network
    127s
  • platform
    windows7_x64
  • resource
    win7-20240705-en
  • resource tags

    arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system
  • submitted
    02-08-2024 18:52

Sharing

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General

  • Target

    1/0fb86a8ba8fdf57990c283080a671c1320cbcdfd0e8b5f5a250d9c38a6fce305.exe

  • Size

    146KB

  • MD5

    2357ecbcf3b566c76c839daf7ecf2681

  • SHA1

    89d9b7c3eff0a15dc9dbbfe2163de7d5e9479f58

  • SHA256

    0fb86a8ba8fdf57990c283080a671c1320cbcdfd0e8b5f5a250d9c38a6fce305

  • SHA512

    bb5630ae44e684f2dfc74478c57bf97a94045501a64022d563e87f2a60d777307cab2b5a14e6764d25a2fd1f27901624c1ee76ca551d5a5e3a21abc4befef401

  • SSDEEP

    3072:V6glyuxE4GsUPnliByocWepo2NVLiguo/pyEwUS:V6gDBGpvEByocWeauV2gvzwU

Score
10/10
defense_evasiondiscoveryransomwarespywarestealer

Malware Config

Extracted

Path

C:\7V7uPExzv.README.txt

Ransom Note
~~~NULLBULGE LOCK - BASED ON LOCKBIT~~~ >>>> Your data is encrypted... but dont freak out If we encrypted you, you majorly fucked up. But... all can be saved But not for free, we require an xmr payment >>>> What guarantees that we will not deceive you? We are not a politically motivated group and we do not need anything other than your money. If you pay, we will provide you the programs for decryption. Life is too short to be sad. Dont be sad money is only paper. Your files are more important than paper right? If we do not give you decrypter then nobody will pay us in the future. To us, our reputation is very important. There is no dissatisfied victim after payment. >>>> You may contact us and decrypt one file for free on these TOR sites with your personal DECRYPTION ID Download and install TOR Browser https://www.torproject.org/ Write to a chat and wait for the answer, we will always answer you. Sometimes you will need to wait a while Links for Tor Browser: http://nullblgtk7dwzpfklgktzll27ovvnj7pvqkoprmhubnnb32qcbmcpgid.onion/ Link for the normal browser http://group.goocasino.org https://nullbulge.com >>>> Your personal DECRYPTION ID: 217B9D5D58C4AD3CD5021A72B3457560 >>>> Warning! Do not DELETE or MODIFY any files, it can lead to recovery problems!
URLs

http://nullblgtk7dwzpfklgktzll27ovvnj7pvqkoprmhubnnb32qcbmcpgid.onion/

http://group.goocasino.org

https://nullbulge.com

Signatures

  • Renames multiple (364) files with added filename extension

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

    ransomware
  • 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.

    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
  • Sets desktop wallpaper using registry 2 TTPs 2 IoCs
    ransomware
  • 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.

    discovery
  • Modifies Control Panel 2 IoCs
    evasion
  • Modifies registry class 5 IoCs
  • Suspicious behavior: EnumeratesProcesses 10 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\1\0fb86a8ba8fdf57990c283080a671c1320cbcdfd0e8b5f5a250d9c38a6fce305.exe
    "C:\Users\Admin\AppData\Local\Temp\1\0fb86a8ba8fdf57990c283080a671c1320cbcdfd0e8b5f5a250d9c38a6fce305.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:2752
    • C:\ProgramData\3A23.tmp
      "C:\ProgramData\3A23.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:1668
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C DEL /F /Q C:\PROGRA~3\3A23.tmp >> NUL
        3⤵
        • System Location Discovery: System Language Discovery
        PID:1184
  • C:\Windows\system32\AUDIODG.EXE
    C:\Windows\system32\AUDIODG.EXE 0x14c
    1⤵
      PID:2980

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\$Recycle.Bin\S-1-5-21-3502430532-24693940-2469786940-1000\desktop.ini
      Filesize

      129B

      MD5

      dad2b2ae3ef0f92cde0b32cdacef237c

      SHA1

      74ebeec4755cce88a097b0a28b5a289ae4f8cbc1

      SHA256

      ff29ef72ba36339a36c8175452877a18987312604cf549ae168e97c4d3927b84

      SHA512

      6e0d5196242a91c50983ff4661df8e6a896ee8c72bfeda4a92832e8bfb84089909ffd615c573b212616982dfb5e4b347dbe0195847f45938f310af56626b5b3e

      Download Submit

    • C:\7V7uPExzv.README.txt
      Filesize

      1KB

      MD5

      3736712eb4bfc14131764a9f9641beef

      SHA1

      1186a971102159c67c4f5eea8d4b8b1d15ad4089

      SHA256

      d05da8f7bf7b4237dc76f89538d841eef81a84a779eacdc39248805f8fc220a8

      SHA512

      5e63ce8b3e5fe667b482d8e21d677f582e68c10460deaf586cafb27ec8b1cdbebb872d6421f672d54d389e94955b918ff05e30a4e6c8853a6ce4a9157ce2260d

      Download Submit

    • C:\Users\Admin\AppData\Local\Temp\1\DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD
      Filesize

      146KB

      MD5

      8a0c9b5d89b8ad03eae5fa8fd747b5e7

      SHA1

      03672f59e7ec8e97f02c770a387bb081bd91cbfb

      SHA256

      8697398072083311e47f3dab4bf8bb7a71ddb6335fe362bd94e0deeb1065807f

      SHA512

      948606af743407ac8f49b2b56e3a047b9a9d9e8d5b108aaa4bbfd4e73dad0d423bd7b2a618a044c48425a4395976a6d9ee70e1e29f8a21784613a68b4d7bb60e

      Download Submit

    • F:\$RECYCLE.BIN\S-1-5-21-3502430532-24693940-2469786940-1000\QQQQQQQQQQQ
      Filesize

      129B

      MD5

      181a44d08a45b33f05fe068798a3607d

      SHA1

      21dd3e035d869e41c0e12bef3d0f4e5dee6a6082

      SHA256

      393b8cd3916aa8ac3fc81942d188d2d0baf0125ec9cf0a80ffd3a3cfe63a7327

      SHA512

      1f5aec1bdac7e5c9a7bdc59c366ab822301ba6b8e7134d8bf74a291baa5c3fe3bc7cf1f7a6523108c838c755b044419d44ab36bb076ced58404e3709a3065565

      Download Submit

    • \ProgramData\3A23.tmp
      Filesize

      14KB

      MD5

      294e9f64cb1642dd89229fff0592856b

      SHA1

      97b148c27f3da29ba7b18d6aee8a0db9102f47c9

      SHA256

      917e115cc403e29b4388e0d175cbfac3e7e40ca1742299fbdb353847db2de7c2

      SHA512

      b87d531890bf1577b9b4af41dddb2cdbbfa164cf197bd5987df3a3075983645a3acba443e289b7bfd338422978a104f55298fbfe346872de0895bde44adc89cf

      Download Submit

    • memory/1668-901-0x0000000000401000-0x0000000000404000-memory.dmp

      Filesize

      12KB

      Download

    • memory/1668-903-0x0000000000400000-0x0000000000407000-memory.dmp

      Filesize

      28KB

      Download

    • memory/2752-0-0x0000000002160000-0x00000000021A0000-memory.dmp

      Filesize

      256KB

      Download