Overview

overview

10

Static

static

AIDS_NT.exe

windows7_x64

10

AIDS_NT.exe

windows10-2004_x64

10

Sharing

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General

  • Target

    f2423b5b4e9602c5ae496d69e093cfece7b50e2ad71b752ca1c58424f7db1ca7

  • Size

    924KB

  • Sample

    220521-mmpxqacad9

  • MD5

    1d06a749085f95ef5a35c187e2c7025f

  • SHA1

    af0721940235027109cfbaddfdda574b5c759a0f

  • SHA256

    f2423b5b4e9602c5ae496d69e093cfece7b50e2ad71b752ca1c58424f7db1ca7

  • SHA512

    80d4780471f8e57935e998109a563530ceb4bb99baf4efd1183c46366815ee3631be0069dc311ed7881f563b2992441be86e666b505414d9033ae0972dccaf9c

Score
10/10
evasionpersistenceransomwareupx

Malware Config

Targets

    • Target

      AIDS_NT.exe

    • Size

      924KB

    • MD5

      14eefb80a0813abbf8710387a5383f08

    • SHA1

      d3fa355cc1d184be20b441143fa34e4ae1a4bdb2

    • SHA256

      61ee3bd82bed03dd0f3fb9bc9b76b7da972a90d3c12c8e4d5e967440a2f04c00

    • SHA512

      a3174a80c47a02b6deed6eb390a999fa486f7a4cda7ab614d93589f614a60ba500aa8f42346e80cc53b7e1a5af0f0e515e4b014d23e5af90fabeae504f43f130

    Score
    10/10
    evasionpersistenceransomwareupx

    • Modifies WinLogon for persistence

      persistence

    • Modifies system executable filetype association

      persistence

    • Blocks application from running via registry modification

      Adds application to list of disallowed applications.

      evasion

    • Disables RegEdit via registry modification

      evasion

    • Disables Task Manager via registry modification

      evasion

    • Disables use of System Restore points

      evasion

    • Executes dropped EXE

    • Sets file to hidden

      Modifies file attributes to stop it showing in Explorer etc.

      evasion

    • UPX packed file

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

      upx

    • Checks computer location settings

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

    • Loads dropped DLL

    • Sets desktop wallpaper using registry

      ransomware
    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Winlogon Helper DLL

1
T1004

Change Default File Association

1
T1042

Hidden Files and Directories

2
T1158

Privilege Escalation

Defense Evasion

Modify Registry

3
T1112

Hidden Files and Directories

2
T1158

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Inhibit System Recovery

1
T1490

Defacement

1
T1491

Tasks