Overview

overview

10

Static

static

b759d41b4b...27.exe

windows7-x64

10

b759d41b4b...27.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    b759d41b4b8351860c5e9fd076bae283096f434b3d6e4602a3702c94b4c75327

  • Size

    251KB

  • Sample

    221203-hhyxlsgc7y

  • MD5

    a8bee4bca5b596bbe4adc784a054a032

  • SHA1

    bb58394e02f8729351dc1ca8594f37e5f9fcc179

  • SHA256

    b759d41b4b8351860c5e9fd076bae283096f434b3d6e4602a3702c94b4c75327

  • SHA512

    afb58031e1b8f37cfa064a0f44411981c970ccccacbbd0cd64c2f3a4d87b839b2dff8dd7fd962c0f55be2fc9b2277522bed9af89ae76d44b5d538af624fa8b80

  • SSDEEP

    3072:tZOShov9cYu7tStjKHXlavBi9H+0eoa5aWnlCd1PPFzuDupxRwGDKs8nZsRZ:trhoAWsXCWleFaVnzuds8Zsr

Score
10/10
metasploitbackdoorevasionpersistencetrojanupx

Malware Config

Extracted

Family

metasploit

Version

encoder/call4_dword_xor

Targets

    • Target

      b759d41b4b8351860c5e9fd076bae283096f434b3d6e4602a3702c94b4c75327

    • Size

      251KB

    • MD5

      a8bee4bca5b596bbe4adc784a054a032

    • SHA1

      bb58394e02f8729351dc1ca8594f37e5f9fcc179

    • SHA256

      b759d41b4b8351860c5e9fd076bae283096f434b3d6e4602a3702c94b4c75327

    • SHA512

      afb58031e1b8f37cfa064a0f44411981c970ccccacbbd0cd64c2f3a4d87b839b2dff8dd7fd962c0f55be2fc9b2277522bed9af89ae76d44b5d538af624fa8b80

    • SSDEEP

      3072:tZOShov9cYu7tStjKHXlavBi9H+0eoa5aWnlCd1PPFzuDupxRwGDKs8nZsRZ:trhoAWsXCWleFaVnzuds8Zsr

    Score
    10/10
    metasploitbackdoorevasionpersistencetrojanupx

    • MetaSploit

      Detected malicious payload which is part of the Metasploit Framework, likely generated with msfvenom or similar.

      trojanbackdoormetasploit

    • Modifies firewall policy service

      evasion

    • Executes dropped EXE

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

      upx

    • Checks computer location settings

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

    • Deletes itself

    • Loads dropped DLL

    • Adds Run key to start application

      persistence

    • Maps connected drives based on registry

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

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Modify Existing Service

1
T1031

Registry Run Keys / Startup Folder

1
T1060

Privilege Escalation

Defense Evasion

Modify Registry

2
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

Tasks