Overview

overview

9

Static

static

7

NeptnExternalFree.exe

windows7-x64

9

NeptnExternalFree.exe

windows10-2004-x64

9

Sharing

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General

  • Target

    NeptnExternalFree.exe

  • Size

    3.5MB

  • Sample

    230326-ch9q8afb95

  • MD5

    01e8ba61787a19bc8838fe845fdbeec1

  • SHA1

    6ee449056214222388c91d147712c035a0e8dec2

  • SHA256

    88ca77450527c906fe9d75e2f9f12280fa8dadd02691c15efdb487bd875499a6

  • SHA512

    9fbb531764adfb9c6cae4735405d5d302eeb2bed85c028a5e69719b29b18f61f598ef1021bd6bb1ff5c826992b5c84e4c6d547d55b202127ee88ceec666ab6db

  • SSDEEP

    49152:yn3wi5r0to7oRoAqcOBLCDjhYCuge31JXigR4Hd20Z3taNxPMb68OX6E8kFWOZR1:yA+YtuvcSyjhjovigRWnZ9MObTOLvf48

Score
9/10
evasionpersistencethemidatrojan

Malware Config

Targets

    • Target

      NeptnExternalFree.exe

    • Size

      3.5MB

    • MD5

      01e8ba61787a19bc8838fe845fdbeec1

    • SHA1

      6ee449056214222388c91d147712c035a0e8dec2

    • SHA256

      88ca77450527c906fe9d75e2f9f12280fa8dadd02691c15efdb487bd875499a6

    • SHA512

      9fbb531764adfb9c6cae4735405d5d302eeb2bed85c028a5e69719b29b18f61f598ef1021bd6bb1ff5c826992b5c84e4c6d547d55b202127ee88ceec666ab6db

    • SSDEEP

      49152:yn3wi5r0to7oRoAqcOBLCDjhYCuge31JXigR4Hd20Z3taNxPMb68OX6E8kFWOZR1:yA+YtuvcSyjhjovigRWnZ9MObTOLvf48

    Score
    9/10
    evasionthemidatrojanpersistence

    • Identifies VirtualBox via ACPI registry values (likely anti-VM)

      evasion

    • Downloads MZ/PE file

    • Sets service image path in registry

      persistence

    • Stops running service(s)

      evasion

    • Checks BIOS information in registry

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

    • Executes dropped EXE

    • Themida packer

      Detects Themida, an advanced Windows software protection system.

      themida

    • Checks whether UAC is enabled

      evasiontrojan

    • Legitimate hosting services abused for malware hosting/C2

    • Drops file in System32 directory

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1
T1060

Modify Existing Service

1
T1031

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

1
T1497

Modify Registry

2
T1112

Impair Defenses

1
T1562

Credential Access

Discovery

Query Registry

3
T1012

Virtualization/Sandbox Evasion

1
T1497

System Information Discovery

4
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Web Service

1
T1102

Impact

Service Stop

1
T1489

Tasks