Overview

overview

10

Static

static

3

99dd3cc7c8...18.exe

windows7-x64

6

99dd3cc7c8...18.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    99dd3cc7c892b5f9ab08f1f32d24ceb1_JaffaCakes118

  • Size

    364KB

  • Sample

    240606-dtpqvsgd26

  • MD5

    99dd3cc7c892b5f9ab08f1f32d24ceb1

  • SHA1

    617dbe7a9ca971ab12bc47617b620439c2c4bb8a

  • SHA256

    0191694f67cd2a399086c7681c270ac3bd72f67180f42e278c36e33612ea789c

  • SHA512

    ec66eb1d8082328ce6661aa7f837ca3da9362f0882c5499641c5f72d772161645afe4b5bf7a3b344ccd1f30777dad3b85d81b54d9b487e624102a7cf0abd1ab3

  • SSDEEP

    3072:5SBlIbRbYAR5PyVbjs2pymtaZt3zkKMAD/EfXg0mqS3Fdc7NK1JFNeRFFtJssA:5SBwRbYA/n2pj8Z7FjAw0258Hnss

Score
10/10
guloaderdownloaderguloaderpersistence

Malware Config

Extracted

Family

guloader

C2

https://drive.google.com/uc?export=download&id=1UnM5e0QivRQySIMs6YSxkUO014pasY9Y

xor.base64

Targets

    • Target

      99dd3cc7c892b5f9ab08f1f32d24ceb1_JaffaCakes118

    • Size

      364KB

    • MD5

      99dd3cc7c892b5f9ab08f1f32d24ceb1

    • SHA1

      617dbe7a9ca971ab12bc47617b620439c2c4bb8a

    • SHA256

      0191694f67cd2a399086c7681c270ac3bd72f67180f42e278c36e33612ea789c

    • SHA512

      ec66eb1d8082328ce6661aa7f837ca3da9362f0882c5499641c5f72d772161645afe4b5bf7a3b344ccd1f30777dad3b85d81b54d9b487e624102a7cf0abd1ab3

    • SSDEEP

      3072:5SBlIbRbYAR5PyVbjs2pymtaZt3zkKMAD/EfXg0mqS3Fdc7NK1JFNeRFFtJssA:5SBwRbYA/n2pj8Z7FjAw0258Hnss

    Score
    10/10
    persistenceguloaderdownloaderguloader

    • Guloader,Cloudeye

      A shellcode based downloader first seen in 2020.

      downloaderguloader

    • Guloader payload

      guloader

    • Checks computer location settings

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

    • Adds Run key to start application

      persistence

    • Legitimate hosting services abused for malware hosting/C2

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Defense Evasion

Modify Registry

1
T1112

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Web Service

1
T1102

Impact

Resource Development

Reconnaissance

Tasks