Overview

overview

10

Static

static

8

uiso@_2808.exe

windows7_x64

1

uiso@_2808.exe

windows10_x64

10

Sharing

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General

  • Target

    uiso@_2808.exe

  • Size

    1.2MB

  • Sample

    210301-jzatr3v9fe

  • MD5

    96a873bd4fbe8a4de6d6c2ce9dcad4e0

  • SHA1

    ae6f5c8f5b5040f88ecba5c5c2b32219079f2336

  • SHA256

    f7b46393eacf40b9b9ed8a7b3389a086f72de5f311306304c9a40056d4f81db7

  • SHA512

    7a12def5cd379c4d8ee1465b3a4035ba671ba1c3cb6e4d63bcad50dde93cb439799e153da8b6e96e8cc4ee811ae7c836e71858c9cdfc8c1455618f44daab071c

Score
10/10
bootkitdiscoveryevasionpersistenceupx

Malware Config

Targets

    • Target

      uiso@_2808.exe

    • Size

      1.2MB

    • MD5

      96a873bd4fbe8a4de6d6c2ce9dcad4e0

    • SHA1

      ae6f5c8f5b5040f88ecba5c5c2b32219079f2336

    • SHA256

      f7b46393eacf40b9b9ed8a7b3389a086f72de5f311306304c9a40056d4f81db7

    • SHA512

      7a12def5cd379c4d8ee1465b3a4035ba671ba1c3cb6e4d63bcad50dde93cb439799e153da8b6e96e8cc4ee811ae7c836e71858c9cdfc8c1455618f44daab071c

    Score
    10/10
    bootkitdiscoveryevasionpersistenceupx

    • Registers COM server for autorun

      persistence

    • Enumerates VirtualBox registry keys

      evasion

    • Looks for VirtualBox Guest Additions in registry

      evasion

    • Executes dropped EXE

    • Looks for VMWare Tools registry key

      evasion

    • Sets DLL path for service in the registry

      persistence

    • Sets service image path in registry

      persistence

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

      upx

    • Loads dropped DLL

    • Checks installed software on the system

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

      discovery

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • Writes to the Master Boot Record (MBR)

      Bootkits write to the MBR to gain persistence at a level below the operating system.

      bootkitpersistence

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

3
T1060

Bootkit

1
T1067

Hidden Files and Directories

1
T1158

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

3
T1497

Modify Registry

5
T1112

Install Root Certificate

1
T1130

Hidden Files and Directories

1
T1158

Credential Access

Discovery

Query Registry

5
T1012

Virtualization/Sandbox Evasion

3
T1497

Peripheral Device Discovery

1
T1120

System Information Discovery

2
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Tasks