General

  • Target

    5729b6172d5b65e39eefa0466fb7ab63eeda116e82250bcd4755e55dc932f34f

  • Size

    149KB

  • Sample

    220725-at5wasfecm

  • MD5

    1d864d76040af03041850d855b3b4430

  • SHA1

    136ffd632fde395f42db66d698ebd03c105ed78f

  • SHA256

    5729b6172d5b65e39eefa0466fb7ab63eeda116e82250bcd4755e55dc932f34f

  • SHA512

    96ea45088713a4149cfb96034637d405ad78abba6d6332b3459fecc649e2fcdcfa0bee6acfeb8cd971bec88d2c2cd80ee4e6656d95ad95542c25f2f0c9232721

Malware Config

Targets

    • Target

      5729b6172d5b65e39eefa0466fb7ab63eeda116e82250bcd4755e55dc932f34f

    • Size

      149KB

    • MD5

      1d864d76040af03041850d855b3b4430

    • SHA1

      136ffd632fde395f42db66d698ebd03c105ed78f

    • SHA256

      5729b6172d5b65e39eefa0466fb7ab63eeda116e82250bcd4755e55dc932f34f

    • SHA512

      96ea45088713a4149cfb96034637d405ad78abba6d6332b3459fecc649e2fcdcfa0bee6acfeb8cd971bec88d2c2cd80ee4e6656d95ad95542c25f2f0c9232721

    • suricata: ET MALWARE Ransomware/Cerber Checkin 2

      suricata: ET MALWARE Ransomware/Cerber Checkin 2

    • suricata: ET MALWARE Ransomware/Cerber Checkin M3 (10)

      suricata: ET MALWARE Ransomware/Cerber Checkin M3 (10)

    • suricata: ET MALWARE Ransomware/Cerber Checkin M3 (2)

      suricata: ET MALWARE Ransomware/Cerber Checkin M3 (2)

    • Contacts a large (16386) amount of remote hosts

      This may indicate a network scan to discover remotely running services.

    • Contacts a large (16396) amount of remote hosts

      This may indicate a network scan to discover remotely running services.

    • Creates a large amount of network flows

      This may indicate a network scan to discover remotely running services.

    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

    • Modifies boot configuration data using bcdedit

    • Adds policy Run key to start application

    • Executes dropped EXE

    • Checks computer location settings

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

    • Deletes itself

    • Drops startup file

    • Loads dropped DLL

    • Modifies file permissions

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • Adds Run key to start application

    • Looks up external IP address via web service

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

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

2
T1060

Defense Evasion

File Deletion

2
T1107

Modify Registry

2
T1112

File Permissions Modification

1
T1222

Credential Access

Credentials in Files

1
T1081

Discovery

Network Service Scanning

3
T1046

Query Registry

1
T1012

System Information Discovery

2
T1082

Remote System Discovery

1
T1018

Collection

Data from Local System

1
T1005

Impact

Inhibit System Recovery

3
T1490

Tasks