Overview

overview

10

Static

static

3

rbxfpsunlocker.exe

windows11-21h2-x64

10

Sharing

Copy URL
Twitter E-mail

General

  • Target

    rbxfpsunlocker-x64.zip

  • Size

    250KB

  • Sample

    240804-e1v2wswdnm

  • MD5

    994c2bc7d966516aab11896b8a4cbc8e

  • SHA1

    350502479588c281ea67747288f9f2469e6c34f1

  • SHA256

    92b2d2a44e57ae9d47806eba7e62ef0d0e3b152e822803845e9bfe74adb6efc3

  • SHA512

    12b8bb979bc8d8f7def35cc8e727c715b442d30a9b5bf2568931d3fbe43963e540bdaf44aba88b3db37df876476b3c940dbd454ba53ef5ab9c70c8b68d58abaf

  • SSDEEP

    6144:9ObRmprIxqYPUynYaYGiCB2YWrfb1Vd/X254xix6LU:I9mprAqYXnYaYFCUYSbc5cLU

Score
10/10
chimeradiscoveryevasionpersistenceprivilege_escalationransomware

Malware Config

Targets

    • Target

      rbxfpsunlocker.exe

    • Size

      605KB

    • MD5

      09d083f0e2c1e8a3561209902333ad8f

    • SHA1

      d9692d3aba34a39aeb9e53cb3d25562b94e2e597

    • SHA256

      83dfcb08ea4aa1b857d952a8a177db775d1a7e9cfc30b528848a4a29c8dbf0b9

    • SHA512

      c71371263cacc4872a4bf621614940f08c9436062683be5de921ae6e509079e25ea380623e8945d40858819a664bd76590defb2a89949e8e5666190f1024ca6b

    • SSDEEP

      12288:IKOjJsDc2+WC+D+4H/xeGofENaTSuGCC709:IKyacgDD+4fwG1NaTSw

    Score
    10/10
    chimeradiscoveryevasionpersistenceprivilege_escalationransomware

    • Chimera

      Ransomware which infects local and network files, often distributed via Dropbox links.

      ransomwarechimera

    • Chimera Ransomware Loader DLL

      Drops/unpacks executable file which resembles Chimera's Loader.dll.

      ransomware

    • Process spawned unexpected child process

      This typically indicates the parent process was compromised via an exploit or macro.

    • Modifies Windows Firewall

      evasion

    • Drops startup file

    • Executes dropped EXE

    • Loads dropped DLL

    • Adds Run key to start application

      persistence

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    behavioral1

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Event Triggered Execution

1
T1546

Netsh Helper DLL

1
T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Event Triggered Execution

1
T1546

Netsh Helper DLL

1
T1546.007

Defense Evasion

Impair Defenses

1
T1562

Disable or Modify System Firewall

1
T1562.004

Modify Registry

1
T1112

Credential Access

Discovery

Browser Information Discovery

1
T1217

Query Registry

2
T1012

System Information Discovery

2
T1082

System Location Discovery

1
T1614

System Language Discovery

1
T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Tasks