General

  • Target

    Cryptded_protected.sfx.bin

  • Size

    1.7MB

  • Sample

    220711-pg6z6aghhn

  • MD5

    8a9c5b9db9e0bca2aa8155197462650c

  • SHA1

    5d2422bff61c219a6f3d2974e99c310eab1657b5

  • SHA256

    283906c670f0a64dbd5f3ce78354ef08071db8b728c3ee93f55195da68fd7d1c

  • SHA512

    81b06cc10d7959dc15648ad255351c128ef097ce2f10bc3eb63dc19f93ceb4cceb9d1adb2e4e8a033818f1aebb6fc72193f5dc61ee74a77f482cb29cac8cebab

Malware Config

Extracted

Family

44caliber

C2

https://discord.com/api/webhooks/963884131157168128/l7y0A3as75Se94o7XMk4zXPVahSSRfUXKz2j0cONgRgga6ZiO0oAtr3nqCmT9TlwHPnJ

Targets

    • Target

      Cryptded_protected.sfx.bin

    • Size

      1.7MB

    • MD5

      8a9c5b9db9e0bca2aa8155197462650c

    • SHA1

      5d2422bff61c219a6f3d2974e99c310eab1657b5

    • SHA256

      283906c670f0a64dbd5f3ce78354ef08071db8b728c3ee93f55195da68fd7d1c

    • SHA512

      81b06cc10d7959dc15648ad255351c128ef097ce2f10bc3eb63dc19f93ceb4cceb9d1adb2e4e8a033818f1aebb6fc72193f5dc61ee74a77f482cb29cac8cebab

    • 44Caliber

      An open source infostealer written in C#.

    • njRAT/Bladabindi

      Widely used RAT written in .NET.

    • Executes dropped EXE

    • Modifies Windows Firewall

    • Checks computer location settings

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

    • Drops startup file

    • Loads dropped DLL

    • Reads user/profile data of web browsers

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

    • Accesses cryptocurrency files/wallets, possible credential harvesting

    • 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.

    • Drops autorun.inf file

      Malware can abuse Windows Autorun to spread further via attached volumes.

    • Suspicious use of NtSetInformationThreadHideFromDebugger

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Replication Through Removable Media

1
T1091

Persistence

Modify Existing Service

1
T1031

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Modify Registry

1
T1112

Credential Access

Credentials in Files

2
T1081

Discovery

Query Registry

2
T1012

System Information Discovery

3
T1082

Lateral Movement

Replication Through Removable Media

1
T1091

Collection

Data from Local System

2
T1005

Tasks