Overview

overview

10

Static

static

1

345c37943c...18.exe

windows7-x64

10

345c37943c...18.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    345c37943c7a7e1fd0098aab07fe3c86_JaffaCakes118

  • Size

    368KB

  • Sample

    240511-nkqa5sea8v

  • MD5

    345c37943c7a7e1fd0098aab07fe3c86

  • SHA1

    ff8d484c90feab90b94502fbcaff84b16eb9a280

  • SHA256

    1e0fc6cf4d0b655fc2495aeb3890f382e00ec9060ab23fa0a035a5042cda6daa

  • SHA512

    888e8d2f20ccf440107971e8268d06b34aa8c7e5c476f55544321780f30af52c731ada5cca83f015b607f3b61dc5be276199a9dd3cc50fd70ed47c38ca5495cd

  • SSDEEP

    6144:GpWnsT313ntnJiuPn28TTc48OSswYLi9zdsPqw73hJfrhIN:+3Xnguf2ic/swVzWBJT4

Score
10/10
buerloaderpersistence

Malware Config

Extracted

Family

buer

C2

https://162.244.81.87/

http://162.244.81.87:8080/

Targets

    • Target

      345c37943c7a7e1fd0098aab07fe3c86_JaffaCakes118

    • Size

      368KB

    • MD5

      345c37943c7a7e1fd0098aab07fe3c86

    • SHA1

      ff8d484c90feab90b94502fbcaff84b16eb9a280

    • SHA256

      1e0fc6cf4d0b655fc2495aeb3890f382e00ec9060ab23fa0a035a5042cda6daa

    • SHA512

      888e8d2f20ccf440107971e8268d06b34aa8c7e5c476f55544321780f30af52c731ada5cca83f015b607f3b61dc5be276199a9dd3cc50fd70ed47c38ca5495cd

    • SSDEEP

      6144:GpWnsT313ntnJiuPn28TTc48OSswYLi9zdsPqw73hJfrhIN:+3Xnguf2ic/swVzWBJT4

    Score
    10/10
    buerloaderpersistence

    • Buer

      Buer is a new modular loader first seen in August 2019.

      loaderbuer

    • Modifies WinLogon for persistence

      persistence

    • Buer Loader

      Detects Buer loader in memory or disk.

      loader

    • Checks computer location settings

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

    • Deletes itself

    • Executes dropped EXE

    • Loads dropped DLL

    • Enumerates connected drives

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

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1
T1547

Winlogon Helper DLL

1
T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Winlogon Helper DLL

1
T1547.004

Defense Evasion

Modify Registry

1
T1112

Credential Access

Discovery

Query Registry

2
T1012

System Information Discovery

3
T1082

Peripheral Device Discovery

1
T1120

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Tasks