General

  • Target

    b3a55f10_by_Libranalysis

  • Size

    12.8MB

  • Sample

    210505-7tvlrw6kfn

  • MD5

    b3a55f10d9e7de1f5661d21d183928b7

  • SHA1

    5d615e30b34cb04de59bb20b0731307d06b8d2a7

  • SHA256

    edb0f17860280cf20be424eda4e6eff692b2e5e86f38353321b86a2290a208be

  • SHA512

    c78b800f68f21954078caf34db6d588737871401841633f029940850076e5f7a4c122f12d629d27bd35fe76f7b7e2ce37a935030879fa7eefc8233bea0ae9bf2

Malware Config

Targets

    • Target

      b3a55f10_by_Libranalysis

    • Size

      12.8MB

    • MD5

      b3a55f10d9e7de1f5661d21d183928b7

    • SHA1

      5d615e30b34cb04de59bb20b0731307d06b8d2a7

    • SHA256

      edb0f17860280cf20be424eda4e6eff692b2e5e86f38353321b86a2290a208be

    • SHA512

      c78b800f68f21954078caf34db6d588737871401841633f029940850076e5f7a4c122f12d629d27bd35fe76f7b7e2ce37a935030879fa7eefc8233bea0ae9bf2

    • UAC bypass

    • xmrig

      XMRig is a high performance, open source, cross platform CPU/GPU miner.

    • XMRig Miner Payload

    • Executes dropped EXE

    • Sets file execution options in registry

    • Checks computer location settings

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

    • Reads user/profile data of web browsers

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

    • Adds Run key to start application

    • Checks whether UAC is enabled

    • Drops file in System32 directory

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

2
T1060

Privilege Escalation

Bypass User Account Control

1
T1088

Defense Evasion

Bypass User Account Control

1
T1088

Disabling Security Tools

1
T1089

Modify Registry

4
T1112

Credential Access

Credentials in Files

1
T1081

Discovery

Query Registry

1
T1012

System Information Discovery

3
T1082

Collection

Data from Local System

1
T1005

Tasks