General

  • Target

    37626322_1871171556512529_4700140521996156928_n.jpg

  • Size

    62KB

  • Sample

    240921-pcnm1s1erb

  • MD5

    fb2e01e7199ecdeae00c5764a4005ed5

  • SHA1

    2387cbd2f3ad41e2596dfb987baf65ae3b229db3

  • SHA256

    bab52efb1c11cba17e9ae78fdb51c2d8c825af93538eee05b12b2e30b8a0d6e2

  • SHA512

    2b959bfe22e321db451b6f1681880ceda9d6ef660547ef0601feb442d6bb1079377cd4da782821428a23931480e668685ab9058ee6945a41f53a95986f5d2794

  • SSDEEP

    1536:cRF5Wepb57lB9oqjVTs5sTkxO+VWhLVIB4kd+Wes1LLOsqBMQ:c9Ws5f9JSBWRVIB4cMspL7Q

Malware Config

Extracted

Family

revengerat

Botnet

Guest

C2

0.tcp.ngrok.io:19521

Mutex

RV_MUTEX

Targets

    • Target

      37626322_1871171556512529_4700140521996156928_n.jpg

    • Size

      62KB

    • MD5

      fb2e01e7199ecdeae00c5764a4005ed5

    • SHA1

      2387cbd2f3ad41e2596dfb987baf65ae3b229db3

    • SHA256

      bab52efb1c11cba17e9ae78fdb51c2d8c825af93538eee05b12b2e30b8a0d6e2

    • SHA512

      2b959bfe22e321db451b6f1681880ceda9d6ef660547ef0601feb442d6bb1079377cd4da782821428a23931480e668685ab9058ee6945a41f53a95986f5d2794

    • SSDEEP

      1536:cRF5Wepb57lB9oqjVTs5sTkxO+VWhLVIB4kd+Wes1LLOsqBMQ:c9Ws5f9JSBWRVIB4cMspL7Q

    • Modifies WinLogon for persistence

    • Modifies Windows Defender Real-time Protection settings

    • Process spawned unexpected child process

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

    • RevengeRAT

      Remote-access trojan with a wide range of capabilities.

    • UAC bypass

    • Credentials from Password Stores: Credentials from Web Browsers

      Malicious Access or copy of Web Browser Credential store.

    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

    • RevengeRat Executable

    • Blocklisted process makes network request

    • Boot or Logon Autostart Execution: Active Setup

      Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

    • Disables RegEdit via registry modification

    • Disables Task Manager via registry modification

    • Disables cmd.exe use via registry modification

    • Disables use of System Restore points

    • Downloads MZ/PE file

    • Drops file in Drivers directory

    • Event Triggered Execution: Image File Execution Options Injection

    • Modifies Windows Firewall

    • Office macro that triggers on suspicious action

      Office document macro which triggers in special circumstances - often malicious.

    • Possible privilege escalation attempt

    • Checks computer location settings

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

    • Drops startup file

    • Executes dropped EXE

    • Impair Defenses: Safe Mode Boot

    • Loads dropped DLL

    • Modifies file permissions

    • UPX packed file

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

    • Uses the VBS compiler for execution

    • Adds Run key to start application

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

    • Checks whether UAC is enabled

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • Legitimate hosting services abused for malware hosting/C2

    • Sets desktop wallpaper using registry

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks