Overview

overview

8

Static

static

1

PrimoCache...4.html

windows10-2004-x64

PrimoCache...4.html

windows11-21h2-x64

4

Sharing

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General

  • Target
    PrimoCacheServerEdition4.3.0x64.7z
  • Size 449B
  • Sample260604-e8sazahz5z
  • SHA256 403a1fb205d9bfad16b6db395928d76bc66416ed636ecca63d1b3ce188b5427e
  • MD5 SHA1 SHA512 TLSH
Score
8/10
defense_evasiondiscoveryexecutioninstallerransomware

Malware Config

Targets

    • Target
      PrimoCacheServerEdition4.3.0x64.7z
    • Size 449B
    • SHA256 403a1fb205d9bfad16b6db395928d76bc66416ed636ecca63d1b3ce188b5427e
    • MD5 SHA1 SHA512 TLSH
    Score
    8/10
    defense_evasiondiscoveryexecutioninstallerransomware

    • Downloads MZ/PE file

    • Drops file in Drivers directory

    • Installs a root certificate to the trusted certificate store

      A root certificate was added to the trusted certificate store using CertUtil.

      defense_evasion

    • Manipulates Digital Signatures

      Attackers can apply techniques such as changing the registry keys of authenticode & Cryptography to make their binary seem validly signed.

    • Executes dropped EXE

    • Stops running service(s)

      defense_evasionexecution

    • Checks installed software on the system

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

      discovery
    behavioral1behavioral2

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

System Services

1
T1569

Service Execution

1
T1569.002

Persistence

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Privilege Escalation

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Defense Evasion

Hide Artifacts

1
T1564

Hidden Files and Directories

1
T1564.001

Impair Defenses

1
T1562

Modify Registry

1
T1112

Subvert Trust Controls

2
T1553

Install Root Certificate

1
T1553.004

SIP and Trust Provider Hijacking

1
T1553.003

Credential Access

Discovery

Browser Information Discovery

1
T1217

Query Registry

3
T1012

System Information Discovery

3
T1082

System Location Discovery

1
T1614

System Language Discovery

1
T1614.001

System Time Discovery

1
T1124

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Service Stop

1
T1489

Tasks