General

  • Target

    8667467823.zip

  • Size

    11.0MB

  • Sample

    230110-qqjfwsgb65

  • MD5

    9f45619d6590592df49d7cc2adfa3a54

  • SHA1

    21fc4b6d9303d94f712d5b66b64b053b3afab705

  • SHA256

    d73c72cece0b5f7297eb60efa5d7c26dde5edee864b330c061f7a0955f62da7e

  • SHA512

    ab5d6d5eba7508e9e9a004b02bed89afade58c2920d73e8d5876b5c54d62a229f5a93c273a0150d37e9964ace319e01056dc983c74f3321a575f2afdbf519aeb

  • SSDEEP

    196608:Q6BHJ8NCsonlr70p7nOf23zz7f8pq5pA1tWQk1k91SW/zTxBuBpn/:T7iCsikg23zz7f8pmA6Qk2nS6xBuv

Malware Config

Targets

    • Target

      7501184de60676906979b10ed76ef4cb2f583049ec0619b0320d4ce4c2fc0671

    • Size

      269.0MB

    • MD5

      600e5eaa2e5c37f15d63d190daac4439

    • SHA1

      ec376db711cfacb70d03de0cfef5238c6ffb3068

    • SHA256

      7501184de60676906979b10ed76ef4cb2f583049ec0619b0320d4ce4c2fc0671

    • SHA512

      245bd0825164c241d3751f8c65d9bbd40a078948bb6bce9170369c5fe63d8102d571f6d9f83995550117e6819d65c34a90f33c0ab733f1b7faaf72a5c14f979d

    • SSDEEP

      196608:3lej2sXzkvYtfXHwRjpJCeg50B2NbFKGpxMHwkadFVowbL:3QzjHtfHwRv0XDpqQks5

    • Modifies Windows Defender notification settings

    • Suspicious use of NtCreateUserProcessOtherParentProcess

    • 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

    • Executes dropped EXE

    • 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.

    • 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.

    • 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

3
T1112

Disabling Security Tools

3
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

2
T1012

System Information Discovery

2
T1082

Collection

Data from Local System

1
T1005

Impact

Inhibit System Recovery

3
T1490

Tasks