General

  • Target

    main.exe

  • Size

    29.8MB

  • Sample

    220328-1q2ycaffd3

  • MD5

    05eddf246ff3900650373bab2a45f8f1

  • SHA1

    4b1aa434604bacd73857ee1058610ff442ed124f

  • SHA256

    69db77173df272098da80c4bdff6147536b851809cfb2116fc0085bfc885a663

  • SHA512

    8ff0d35ee7478dfe8a9371029d5080259d9e98548ab1119364c8a9d9292931fa0d7d85f95ede68242a682b22acac6e6499bf2c65a4d91ac04209d62e01684188

Malware Config

Extracted

Family

redline

Botnet

1877

C2

hawler.duckdns.org:56199

Targets

    • Target

      main.exe

    • Size

      29.8MB

    • MD5

      05eddf246ff3900650373bab2a45f8f1

    • SHA1

      4b1aa434604bacd73857ee1058610ff442ed124f

    • SHA256

      69db77173df272098da80c4bdff6147536b851809cfb2116fc0085bfc885a663

    • SHA512

      8ff0d35ee7478dfe8a9371029d5080259d9e98548ab1119364c8a9d9292931fa0d7d85f95ede68242a682b22acac6e6499bf2c65a4d91ac04209d62e01684188

    • RedLine

      RedLine Stealer is a malware family written in C#, first appearing in early 2020.

    • RedLine Payload

    • Snake Keylogger

      Keylogger and Infostealer first seen in November 2020.

    • Snake Keylogger Payload

    • Identifies VirtualBox via ACPI registry values (likely anti-VM)

    • Executes dropped EXE

    • Modifies Windows Firewall

    • Checks BIOS information in registry

      BIOS information is often read in order to detect sandboxing environments.

    • Checks computer location settings

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

    • Drops startup file

    • Loads dropped DLL

    • Reads data files stored by FTP clients

      Tries to access configuration files associated with programs like FileZilla.

    • Reads user/profile data of local email clients

      Email clients store some user data on disk where infostealers will often target it.

    • Reads user/profile data of web browsers

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

    • Themida packer

      Detects Themida, an advanced Windows software protection system.

    • Accesses Microsoft Outlook profiles

    • Accesses cryptocurrency files/wallets, possible credential harvesting

    • 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

    • 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

MITRE ATT&CK Matrix ATT&CK v6

Execution

Scheduled Task

1
T1053

Persistence

Modify Existing Service

1
T1031

Registry Run Keys / Startup Folder

1
T1060

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Defense Evasion

Virtualization/Sandbox Evasion

1
T1497

Modify Registry

1
T1112

Credential Access

Credentials in Files

4
T1081

Discovery

Query Registry

4
T1012

Virtualization/Sandbox Evasion

1
T1497

System Information Discovery

4
T1082

Collection

Data from Local System

4
T1005

Email Collection

1
T1114

Tasks