Overview

overview

10

Static

static

1

Microsoft-...sk.exe

windows7-x64

10

Microsoft-...sk.exe

windows10-2004-x64

8

Sharing

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General

  • Target

    Microsoft-Office-Pro_AXUdx5sk.exe

  • Size

    3.5MB

  • Sample

    230323-xss7fahf34

  • MD5

    793c091d621ab270b4d7d8993a524ed4

  • SHA1

    a71ba72c3806a01342fdbd5d44eef61394d4070e

  • SHA256

    b13eb5dae6302c922ea00378babc97b214e90cf6e2e0b37e67fd6b82c4b38db9

  • SHA512

    f35d79a0ac8a29669672de82b8cbe90a9d80735dd99b4b72817ce9a7f5b8a21c58e9f79e95f87f8259ec607921d23e266744611b7ae386c4f54ef4de0dbb4d38

  • SSDEEP

    98304:LOhfS5oFTjvvhWUPrJC9DRczor/PgTyCMQmR8Ud12Fohv:yhfhTjv5jrJaDRUsoR+s6v

Score
10/10
gcleanerdiscoveryevasionloaderspywarestealertrojan

Malware Config

Extracted

Family

gcleaner

C2

85.31.45.39

85.31.45.250

85.31.45.251

85.31.45.88

Targets

    • Target

      Microsoft-Office-Pro_AXUdx5sk.exe

    • Size

      3.5MB

    • MD5

      793c091d621ab270b4d7d8993a524ed4

    • SHA1

      a71ba72c3806a01342fdbd5d44eef61394d4070e

    • SHA256

      b13eb5dae6302c922ea00378babc97b214e90cf6e2e0b37e67fd6b82c4b38db9

    • SHA512

      f35d79a0ac8a29669672de82b8cbe90a9d80735dd99b4b72817ce9a7f5b8a21c58e9f79e95f87f8259ec607921d23e266744611b7ae386c4f54ef4de0dbb4d38

    • SSDEEP

      98304:LOhfS5oFTjvvhWUPrJC9DRczor/PgTyCMQmR8Ud12Fohv:yhfhTjv5jrJaDRUsoR+s6v

    Score
    10/10
    gcleanerdiscoveryevasionloaderspywarestealertrojan

    • GCleaner

      GCleaner is a Pay-Per-Install malware loader first discovered in early 2019.

      loadergcleaner

    • Modifies Windows Defender Real-time Protection settings

      evasiontrojan

    • Windows security bypass

      evasiontrojan

    • Downloads MZ/PE file

    • Checks BIOS information in registry

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

    • 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.

      spywarestealer

    • Checks for any installed AV software in registry

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

      discovery

    • Drops file in System32 directory

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1
T1053

Persistence

Modify Existing Service

1
T1031

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Defense Evasion

Modify Registry

3
T1112

Disabling Security Tools

2
T1089

Credential Access

Credentials in Files

1
T1081

Discovery

Query Registry

3
T1012

System Information Discovery

3
T1082

Security Software Discovery

1
T1063

Lateral Movement

Collection

Data from Local System

1
T1005

Exfiltration

Command and Control

Impact

Tasks