Overview

overview

10

Static

static

YourCyanide_obf.bat

windows7_x64

10

YourCyanide_obf.bat

windows10-2004_x64

10

Sharing

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General

  • Target

    YourCyanide_obf.bat

  • Size

    136KB

  • Sample

    220519-wft3jadbgj

  • MD5

    60105b0d25a609bbf93236f003064d2c

  • SHA1

    bf5fae15e830e6793d2b5b60af0cbb92a4098663

  • SHA256

    e8266fb4c02fdf3d4b449814100c4839a52ceeeeb175f816b357cb695b4b1751

  • SHA512

    b6d4259a2e1eca153d39299d1cfa16b2f1b07eead78b1afc8b4ebd6af17805c6d1112c6ed82e362430b7d6bf180822a3c44e819593da724706499e4c04b7d89c

Score
10/10
evasionpersistenceransomware

Malware Config

Extracted

Language
ps1
Deobfuscated
URLs
exe.dropper

https://cdn.discordapp.com/attachments/974798125011198003/976894591552860220/NoKeyB.exe

Extracted

Language
ps1
Deobfuscated
URLs
exe.dropper

https://cdn.discordapp.com/attachments/971160786015772724/971191444410875914/GetToken.exe

Extracted

Path

C:\Users\Admin\Desktop\YcynNote.txt

Ransom Note
Q: What happened to my files? A: Oops your files have been encrypted by YourCyanide. Q: how can I get them back? A: You can get them back by paying $500 in bitcoin to this btc wallet bc1qrl532s9r2qge8d8p7qlrq57dc4uhssqjexmlwf. Q: What happens if I dont pay? A: You will never get your files back. A: contact at yourcyanide.help@gmail.com. ++++++++++++++++++++++++++++++++++++++++++++ 26647 Files have been encrypted
Emails

yourcyanide.help@gmail.com

Targets

    • Target

      YourCyanide_obf.bat

    • Size

      136KB

    • MD5

      60105b0d25a609bbf93236f003064d2c

    • SHA1

      bf5fae15e830e6793d2b5b60af0cbb92a4098663

    • SHA256

      e8266fb4c02fdf3d4b449814100c4839a52ceeeeb175f816b357cb695b4b1751

    • SHA512

      b6d4259a2e1eca153d39299d1cfa16b2f1b07eead78b1afc8b4ebd6af17805c6d1112c6ed82e362430b7d6bf180822a3c44e819593da724706499e4c04b7d89c

    Score
    10/10
    evasionpersistenceransomware

    • Grants admin privileges

      Uses net.exe to modify the user's privileges.

    • Blocklisted process makes network request

    • Disables Task Manager via registry modification

      evasion

    • Downloads MZ/PE file

    • Executes dropped EXE

    • Modifies Windows Firewall

      evasion

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Loads dropped DLL

    • Adds Run key to start application

      persistence
    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Command-Line Interface

1
T1059

Persistence

Account Manipulation

1
T1098

Modify Existing Service

1
T1031

Registry Run Keys / Startup Folder

1
T1060

Privilege Escalation

Defense Evasion

Modify Registry

1
T1112

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

4
T1082

Process Discovery

1
T1057

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Tasks