General

  • Target

    5e3b448a401c6b9662d1e3d0d5cb2143

  • Size

    2.7MB

  • Sample

    240115-17442afhdk

  • MD5

    5e3b448a401c6b9662d1e3d0d5cb2143

  • SHA1

    f290401040a78886975024e54b9e53d20169563d

  • SHA256

    a2119eeffe066d388268d02e56303423b8ec267efae306609c1b316dc0c04cab

  • SHA512

    677aba5e6ec76d3e21242638b0f31eb5ff4351c7fa14676d0ed87ac8c999552ef02de7423e5acd8bbdc9d43fcd45ff1330151d29f685ef0319e038d63dbd4cba

  • SSDEEP

    49152:Izosmx2LWrn4StMIlux28xPmXtNMGi72arIPR5pl20hukH5jE9PlU/goROD+e8WD:zZnr4yRl6xPmXtNML7zA12OFHMNU/bRW

Malware Config

Extracted

Family

44caliber

C2

https://discord.com/api/webhooks/877099784312328213/gbN3AhFr-HwOYeSmi-AjLnTIHhnG8GV5LfjEhIncHO-_rtFM2jafytOi5GkZCyhMgXTd

Targets

    • Target

      5e3b448a401c6b9662d1e3d0d5cb2143

    • Size

      2.7MB

    • MD5

      5e3b448a401c6b9662d1e3d0d5cb2143

    • SHA1

      f290401040a78886975024e54b9e53d20169563d

    • SHA256

      a2119eeffe066d388268d02e56303423b8ec267efae306609c1b316dc0c04cab

    • SHA512

      677aba5e6ec76d3e21242638b0f31eb5ff4351c7fa14676d0ed87ac8c999552ef02de7423e5acd8bbdc9d43fcd45ff1330151d29f685ef0319e038d63dbd4cba

    • SSDEEP

      49152:Izosmx2LWrn4StMIlux28xPmXtNMGi72arIPR5pl20hukH5jE9PlU/goROD+e8WD:zZnr4yRl6xPmXtNML7zA12OFHMNU/bRW

    • 44Caliber

      An open source infostealer written in C#.

    • Detects Echelon Stealer payload

    • Echelon

      Echelon is a .NET stealer that targets passwords from browsers, email and cryptocurrency clients.

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

    • 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.

    • Executes dropped EXE

    • Loads dropped DLL

    • 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

    • 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 v13

Defense Evasion

Virtualization/Sandbox Evasion

1
T1497

Credential Access

Unsecured Credentials

2
T1552

Credentials In Files

2
T1552.001

Discovery

Query Registry

5
T1012

Virtualization/Sandbox Evasion

1
T1497

System Information Discovery

5
T1082

Collection

Data from Local System

2
T1005

Email Collection

1
T1114

Tasks