Overview

overview

10

Static

static

1

Yealink Ro...0).msi

windows7-x64

6

Yealink Ro...0).msi

windows10-2004-x64

10

Sharing

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General

  • Target

    Yealink RoomConnect Software(2.2.23.0).msi

  • Size

    100.6MB

  • Sample

    240424-pdm3wahf75

  • MD5

    c7eb3be0ee177d1ccc7fde882291c24c

  • SHA1

    85d4f24808e411ec2652c65c4b3a60e3f2b0d354

  • SHA256

    6c8609e9f86f50aa80a45f3f679a1d2b0fe429746d93d16398f25cabf9341ae2

  • SHA512

    fdda7fd7670226a67386399c52b8d0b225864151da6cc0f1bbdc083183a70db08fc3c30a26c7a698a373fbe9fc580f539d7705c9d0c9bd4f86a132b691b14bfa

  • SSDEEP

    3145728:v/JBZgFZg/y/btfC74k77ZROuczprfXwZeP8eOO:XNgFKqs977yuupfgZeP8eO

Score
10/10
discoveryevasionpersistencevmprotect

Malware Config

Targets

    • Target

      Yealink RoomConnect Software(2.2.23.0).msi

    • Size

      100.6MB

    • MD5

      c7eb3be0ee177d1ccc7fde882291c24c

    • SHA1

      85d4f24808e411ec2652c65c4b3a60e3f2b0d354

    • SHA256

      6c8609e9f86f50aa80a45f3f679a1d2b0fe429746d93d16398f25cabf9341ae2

    • SHA512

      fdda7fd7670226a67386399c52b8d0b225864151da6cc0f1bbdc083183a70db08fc3c30a26c7a698a373fbe9fc580f539d7705c9d0c9bd4f86a132b691b14bfa

    • SSDEEP

      3145728:v/JBZgFZg/y/btfC74k77ZROuczprfXwZeP8eOO:XNgFKqs977yuupfgZeP8eO

    Score
    10/10
    discoveryevasionpersistencevmprotect

    • Modifies firewall policy service

      evasion

    • Drops file in Drivers directory

    • Sets service image path in registry

      persistence

    • VMProtect packed file

      Detects executables packed with VMProtect commercial packer.

      vmprotect

    • Adds Run key to start application

      persistence

    • Blocklisted process makes network request

    • Enumerates connected drives

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

    • Checks computer location settings

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

    • Drops file in System32 directory

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Boot or Logon Autostart Execution

2
T1547

Registry Run Keys / Startup Folder

2
T1547.001

Privilege Escalation

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Boot or Logon Autostart Execution

2
T1547

Registry Run Keys / Startup Folder

2
T1547.001

Defense Evasion

Modify Registry

3
T1112

Credential Access

Discovery

Query Registry

5
T1012

Peripheral Device Discovery

2
T1120

System Information Discovery

5
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Tasks