General

  • Target

    CCleaner.v6.10.10347.exe

  • Size

    32.3MB

  • Sample

    230328-ge685shb65

  • MD5

    9a09391b4b56f5536ebd631ec9a70467

  • SHA1

    b5b4029e10893e2fa4427e19cc1b8c5be3127a32

  • SHA256

    f607e4e0cc1d39352854e171efe277e691b01ccc0a15820b72a12de4aace6a4c

  • SHA512

    535b887500ad83ef366560392334757fd44b78c272d22b7933b7b7bfe23a2cf88190e299008420dfbe5c03968ac5de91b65895ed009400fc74ce7d67908528b7

  • SSDEEP

    786432:3NwaTjX+cS77nNiO2CCSHVt2lOwwCcovp9dOD:hTjOcSXNSS1slGoC

Malware Config

Targets

    • Target

      CCleaner.v6.10.10347.exe

    • Size

      32.3MB

    • MD5

      9a09391b4b56f5536ebd631ec9a70467

    • SHA1

      b5b4029e10893e2fa4427e19cc1b8c5be3127a32

    • SHA256

      f607e4e0cc1d39352854e171efe277e691b01ccc0a15820b72a12de4aace6a4c

    • SHA512

      535b887500ad83ef366560392334757fd44b78c272d22b7933b7b7bfe23a2cf88190e299008420dfbe5c03968ac5de91b65895ed009400fc74ce7d67908528b7

    • SSDEEP

      786432:3NwaTjX+cS77nNiO2CCSHVt2lOwwCcovp9dOD:hTjOcSXNSS1slGoC

    • Blocklisted process makes network request

    • Downloads MZ/PE file

    • Drops file in Drivers directory

    • Checks computer location settings

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

    • 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.

    • Registers COM server for autorun

    • 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.

    • Enumerates connected drives

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

    • Installs/modifies Browser Helper Object

      BHOs are DLL modules which act as plugins for Internet Explorer.

    • Legitimate hosting services abused for malware hosting/C2

    • Writes to the Master Boot Record (MBR)

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

    • Checks system information in the registry

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

    • Drops file in System32 directory

MITRE ATT&CK Matrix ATT&CK v6

Execution

Scheduled Task

1
T1053

Command-Line Interface

1
T1059

Persistence

Registry Run Keys / Startup Folder

1
T1060

Browser Extensions

1
T1176

Bootkit

1
T1067

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Defense Evasion

Modify Registry

2
T1112

Credential Access

Credentials in Files

1
T1081

Discovery

Query Registry

6
T1012

System Information Discovery

6
T1082

Security Software Discovery

1
T1063

Peripheral Device Discovery

1
T1120

Collection

Data from Local System

1
T1005

Command and Control

Web Service

1
T1102

Tasks