Overview

overview

10

Static

static

3

Loader.exe

windows10-ltsc_2021-x64

10

Sharing

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General

  • Target
    Loader.exe
  • Size 24.2MB
  • Sample260718-wax71ag12q
  • SHA256 b64a8900bc2bf5ea490587701e273990d9bc00e2a9d281e30cabc1c06587e95e
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
blankgrabberdefense_evasiondiscoveryexecutionpersistenceprivilege_escalationstealertrojan

Malware Config

Targets

    • Target
      Loader.exe
    • Size 24.2MB
    • SHA256 b64a8900bc2bf5ea490587701e273990d9bc00e2a9d281e30cabc1c06587e95e
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    10/10
    defense_evasiondiscoveryexecutionblankgrabberpersistenceprivilege_escalationstealertrojan

    • A stealer written in Python and packaged with Pyinstaller

    • Family: blankgrabber

      Blankgrabber is an infostealer written in Python and packaged with Pyinstaller.

      stealerblankgrabber

    • Drops file in Drivers directory

    • Modifies Windows Firewall

      defense_evasion

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Checks whether UAC is enabled

      defense_evasiontrojan

    • Contacts third-party web service commonly abused for C2

      Legitimate web (hosting) services can be abused by malware authors to host malware or C2s.

    • Network Share Discovery

      Attempt to gather information on host network.

      discovery

    • Hide Artifacts: Hidden Files and Directories

      defense_evasion
    behavioral1

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

2
T1059

Windows Command Shell

1
T1059.003

Persistence

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Event Triggered Execution

1
T1546

Netsh Helper DLL

1
T1546.007

Privilege Escalation

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Event Triggered Execution

1
T1546

Netsh Helper DLL

1
T1546.007

Defense Evasion

Hide Artifacts

2
T1564

Hidden Files and Directories

2
T1564.001

Impair Defenses

1
T1562

Disable or Modify System Firewall

1
T1562.004

Credential Access

Discovery

Browser Information Discovery

1
T1217

Network Share Discovery

1
T1135

Query Registry

3
T1012

System Information Discovery

6
T1082

System Network Connections Discovery

1
T1049

System Time Discovery

1
T1124

Lateral Movement

Collection

Command and Control

Web Service

1
T1102

Exfiltration

Impact

Tasks