Overview

overview

8

Static

static

1

exec.sh

ubuntu-18.04-amd64

8

exec.sh

debian-9-armhf

7

exec.sh

debian-9-mips

7

exec.sh

debian-9-mipsel

7

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General

  • Target

    exec.sh

  • Size

    842B

  • Sample

    240313-2y312sbf3w

  • MD5

    4eeac4436b9c68f85b1c3a2bae62d3f3

  • SHA1

    4895bfd63ba3ae5fd97f69c4a243d4bae7eddfa1

  • SHA256

    bfa195bd238473bfead86e74b796c4721d1f5281c284b96ff29d8806a82a6520

  • SHA512

    e0091672dd843f9dd87b50f43c8b09711cd1b02c40a5a8e51a53878cdd213881328583e99d1d92aef5c497abdd3f181fe6f3a740aedb7d66918c05788bbd0e5b

Score
8/10
antivmlinuxpersistence

Malware Config

Targets

    • Target

      exec.sh

    • Size

      842B

    • MD5

      4eeac4436b9c68f85b1c3a2bae62d3f3

    • SHA1

      4895bfd63ba3ae5fd97f69c4a243d4bae7eddfa1

    • SHA256

      bfa195bd238473bfead86e74b796c4721d1f5281c284b96ff29d8806a82a6520

    • SHA512

      e0091672dd843f9dd87b50f43c8b09711cd1b02c40a5a8e51a53878cdd213881328583e99d1d92aef5c497abdd3f181fe6f3a740aedb7d66918c05788bbd0e5b

    Score
    8/10
    persistenceantivm

    • Modifies password files for system users/ groups

      Modifies files storing password hashes of existing users/ groups, likely to grant additional privileges.

    • Executes dropped EXE

    • Adds a user to the system

    • Checks CPU configuration

      Checks CPU information which indicate if the system is a virtual machine.

      antivm

    • Creates/modifies environment variables

      Creating/modifying environment variables is a common persistence mechanism.

      persistence

    • Modifies Bash startup script

      persistence
    behavioral1behavioral2behavioral3behavioral4

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

User Execution

1
T1204

Persistence

Hijack Execution Flow

1
T1574

Boot or Logon Autostart Execution

1
T1547

Privilege Escalation

Hijack Execution Flow

1
T1574

Boot or Logon Autostart Execution

1
T1547

Defense Evasion

Virtualization/Sandbox Evasion

1
T1497

Hijack Execution Flow

1
T1574

Credential Access

Discovery

Virtualization/Sandbox Evasion

1
T1497

System Information Discovery

1
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Tasks