General

  • Target

    _ok7GZnMnKLx-V_SGjfbzqSUfN4Ec8UuYAkHwKy0u8Q.bin

  • Size

    58.4MB

  • Sample

    230308-t1px7sce5t

  • MD5

    baabd73bcc36410b8ac2c583256daea4

  • SHA1

    8cff0fd52aea3e2f4f1e0613a6a37b9c7efa88fb

  • SHA256

    fa893b1999cc9ca2f1fd5f921a37dbcea4947cde0473c52e600907c0acb4bbc4

  • SHA512

    e6f213a8d1a0620f297321a5f283bfc255d8cb7d6e3db5a00b4f5168d910ebca8f1e982f3d0282bff807bae858923632504b91e42df7a0763a566f04643d7d35

  • SSDEEP

    196608:GG0RJ4w+cFJV75PVvpc/03hAKTwNqPCH9b3Tw73g2onpsdlqloY2Z8Cm8H8nIgX6:GGC4w+cVnWKVK5w73EpsdtY2aCmAX

Malware Config

Targets

    • Target

      _ok7GZnMnKLx-V_SGjfbzqSUfN4Ec8UuYAkHwKy0u8Q.bin

    • Size

      58.4MB

    • MD5

      baabd73bcc36410b8ac2c583256daea4

    • SHA1

      8cff0fd52aea3e2f4f1e0613a6a37b9c7efa88fb

    • SHA256

      fa893b1999cc9ca2f1fd5f921a37dbcea4947cde0473c52e600907c0acb4bbc4

    • SHA512

      e6f213a8d1a0620f297321a5f283bfc255d8cb7d6e3db5a00b4f5168d910ebca8f1e982f3d0282bff807bae858923632504b91e42df7a0763a566f04643d7d35

    • SSDEEP

      196608:GG0RJ4w+cFJV75PVvpc/03hAKTwNqPCH9b3Tw73g2onpsdlqloY2Z8Cm8H8nIgX6:GGC4w+cVnWKVK5w73EpsdtY2aCmAX

    • Modifies Windows Defender notification settings

    • UAC bypass

    • Windows security bypass

    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

    • Disables use of System Restore points

    • Drops file in Drivers directory

    • Possible privilege escalation attempt

    • Sets file to hidden

      Modifies file attributes to stop it showing in Explorer etc.

    • Checks computer location settings

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

    • Deletes itself

    • Drops startup file

    • Executes dropped EXE

    • 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.

    • UPX packed file

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

    • Windows security modification

    • Checks installed software on the system

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

    • Looks up external IP address via web service

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

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v6

Execution

Scheduled Task

1
T1053

Persistence

Modify Existing Service

1
T1031

Hidden Files and Directories

2
T1158

Scheduled Task

1
T1053

Privilege Escalation

Bypass User Account Control

1
T1088

Scheduled Task

1
T1053

Defense Evasion

Modify Registry

4
T1112

Disabling Security Tools

4
T1089

Bypass User Account Control

1
T1088

File Deletion

2
T1107

Hidden Files and Directories

2
T1158

File Permissions Modification

1
T1222

Credential Access

Credentials in Files

1
T1081

Discovery

Query Registry

3
T1012

System Information Discovery

2
T1082

Collection

Data from Local System

1
T1005

Impact

Inhibit System Recovery

3
T1490

Tasks