Overview

overview

8

Static

static

3

LETSVIEW/l...up.exe

windows10-2004-x64

8

LETSVIEW/l...up.exe

windows10-ltsc_2021-x64

8

LETSVIEW/l...up.exe

windows11-21h2-x64

8

LETSVIEW/l...up.exe

windows11-ltsc_2024-x64

8

Sharing

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General

  • Target
    letsview_setup.zip
  • Size 78.8MB
  • Sample260710-c8vd8act2k
  • SHA256 5c01b3af2ca6b789a8006d902f738f81bb99c1696b352c1e6444fdd78b37cdcf
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
8/10
discoverypersistenceprivilege_escalationrevoked_codesign

Malware Config

Targets

    • Target
      LETSVIEW/letsview-setup.exe
    • Size 505KB
    • SHA256 8f47d7121ef6532ad9ad9901e44e237f5c30448b752028c58a9d19521414e40d
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    8/10
    discoverypersistenceprivilege_escalationrevoked_codesign

    • Sets service image path in registry

      This determines the executable launched when a service starts. It can be used to establish persistence.

      persistence

    • Signed with revoked ConnectWise certificate

      Binary is signed using a ConnectWise certificate revoked for key compromise.

      revoked_codesign

    • Event Triggered Execution: Component Object Model Hijacking

      Adversaries may establish persistence by executing malicious content triggered by hijacked references to Component Object Model (COM) objects.

      persistenceprivilege_escalation

    • Executes dropped EXE

    • Loads dropped DLL

    • Checks for any installed AV software in registry

    • Enumerates connected drives

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

    • Boot or Logon Autostart Execution: Authentication Package

      Suspicious Windows Authentication Registry Modification.

      persistenceprivilege_escalation

    • Drops file in System32 directory

    behavioral1behavioral2behavioral3behavioral4

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

2
T1547

Authentication Package

1
T1547.002

Registry Run Keys / Startup Folder

1
T1547.001

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Event Triggered Execution

1
T1546

Component Object Model Hijacking

1
T1546.015

Privilege Escalation

Boot or Logon Autostart Execution

2
T1547

Authentication Package

1
T1547.002

Registry Run Keys / Startup Folder

1
T1547.001

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Event Triggered Execution

1
T1546

Component Object Model Hijacking

1
T1546.015

Defense Evasion

Modify Registry

1
T1112

Credential Access

Discovery

Peripheral Device Discovery

1
T1120

Query Registry

1
T1012

Software Discovery

1
T1518

Security Software Discovery

1
T1518.001

System Information Discovery

1
T1082

System Location Discovery

1
T1614

System Language Discovery

1
T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Tasks