Overview

overview

10

Static

static

SHIPPING DOCUMENT.scr

windows7_x64

10

SHIPPING DOCUMENT.scr

windows10-2004_x64

10

Analysis

  • max time kernel
    89s
  • max time network
    165s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    21-05-2022 18:35

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General

  • Target

    SHIPPING DOCUMENT.scr

  • Size

    84KB

  • MD5

    413d2dbeb92babc91dee4688dff52642

  • SHA1

    0efb2c7c544d774709504c94bb4cdc469ff8e367

  • SHA256

    08954829f50d1aade435fefd5e50e2aee86283ab378a54243892152eded51db8

  • SHA512

    9a443289dc15e13993e41412fd8461bd207912a92cc71d79c88be59b8eea572525bb7d9469d9c739b967513b69467d71ef4a68ee51aa4e41f3e8147856aa4f59

Score
10/10
guloaderdownloaderpersistence

Malware Config

Extracted

Family

guloader

C2

https://drive.google.com/uc?export=download&id=1_oth8C6SFfuRuHZpRwX3CHrHvH7H3Cwv

xor.base64

Signatures

  • Guloader,Cloudeye

    A shellcode based downloader first seen in 2020.

    downloaderguloader
  • Executes dropped EXE 1 IoCs
  • Checks QEMU agent state file 2 TTPs 4 IoCs

    Checks state file used by QEMU agent, possibly to detect virtualization.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Loads dropped DLL 1 IoCs
  • Adds Run key to start application 2 TTPs 4 IoCs
    persistence
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 4 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Suspicious behavior: MapViewOfSection 2 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\SHIPPING DOCUMENT.scr
    "C:\Users\Admin\AppData\Local\Temp\SHIPPING DOCUMENT.scr" /S
    1⤵
    • Checks QEMU agent state file
    • Adds Run key to start application
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of SetThreadContext
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4328
    • C:\Users\Admin\AppData\Local\Temp\SHIPPING DOCUMENT.scr
      "C:\Users\Admin\AppData\Local\Temp\SHIPPING DOCUMENT.scr" /S
      2⤵
      • Checks QEMU agent state file
      • Checks computer location settings
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Suspicious use of WriteProcessMemory
      PID:4648
      • C:\Users\Admin\AppData\Local\Temp\SCAP\Tipbartsl.scr
        "C:\Users\Admin\AppData\Local\Temp\SCAP\Tipbartsl.scr" /S
        3⤵
        • Executes dropped EXE
        • Checks QEMU agent state file
        • Adds Run key to start application
        • Suspicious use of NtSetInformationThreadHideFromDebugger
        • Suspicious use of SetThreadContext
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:4788
        • C:\Users\Admin\AppData\Local\Temp\SCAP\Tipbartsl.scr
          "C:\Users\Admin\AppData\Local\Temp\SCAP\Tipbartsl.scr" /S
          4⤵
          • Checks QEMU agent state file
          • Loads dropped DLL
          • Suspicious use of NtSetInformationThreadHideFromDebugger
          PID:4772

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1
T1060

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

1
T1497

Modify Registry

1
T1112

Credential Access

Discovery

Query Registry

2
T1012

Virtualization/Sandbox Evasion

1
T1497

System Information Discovery

2
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Web Service

1
T1102

Impact

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\SCAP\Tipbartsl.scr
    Filesize

    84KB

    MD5

    413d2dbeb92babc91dee4688dff52642

    SHA1

    0efb2c7c544d774709504c94bb4cdc469ff8e367

    SHA256

    08954829f50d1aade435fefd5e50e2aee86283ab378a54243892152eded51db8

    SHA512

    9a443289dc15e13993e41412fd8461bd207912a92cc71d79c88be59b8eea572525bb7d9469d9c739b967513b69467d71ef4a68ee51aa4e41f3e8147856aa4f59

    Download Submit
  • C:\Users\Admin\AppData\Local\Temp\SCAP\Tipbartsl.scr
    Filesize

    84KB

    MD5

    413d2dbeb92babc91dee4688dff52642

    SHA1

    0efb2c7c544d774709504c94bb4cdc469ff8e367

    SHA256

    08954829f50d1aade435fefd5e50e2aee86283ab378a54243892152eded51db8

    SHA512

    9a443289dc15e13993e41412fd8461bd207912a92cc71d79c88be59b8eea572525bb7d9469d9c739b967513b69467d71ef4a68ee51aa4e41f3e8147856aa4f59

    Download Submit
  • C:\Users\Admin\AppData\Local\Temp\SCAP\Tipbartsl.scr
    Filesize

    84KB

    MD5

    413d2dbeb92babc91dee4688dff52642

    SHA1

    0efb2c7c544d774709504c94bb4cdc469ff8e367

    SHA256

    08954829f50d1aade435fefd5e50e2aee86283ab378a54243892152eded51db8

    SHA512

    9a443289dc15e13993e41412fd8461bd207912a92cc71d79c88be59b8eea572525bb7d9469d9c739b967513b69467d71ef4a68ee51aa4e41f3e8147856aa4f59

    Download Submit
  • memory/4328-138-0x0000000077DD0000-0x0000000077F73000-memory.dmp
    Filesize

    1.6MB

    Download
  • memory/4328-133-0x00007FFD6AC30000-0x00007FFD6AE25000-memory.dmp
    Filesize

    2.0MB

    Download
  • memory/4328-132-0x00000000021D0000-0x00000000021DD000-memory.dmp
    Filesize

    52KB

    Download
  • memory/4648-135-0x0000000000400000-0x000000000055D000-memory.dmp
    Filesize

    1.4MB

    Download
  • memory/4648-140-0x00007FFD6AC30000-0x00007FFD6AE25000-memory.dmp
    Filesize

    2.0MB

    Download
  • memory/4648-141-0x0000000077DD0000-0x0000000077F73000-memory.dmp
    Filesize

    1.6MB

    Download
  • memory/4648-142-0x0000000077DD0000-0x0000000077F73000-memory.dmp
    Filesize

    1.6MB

    Download
  • memory/4648-139-0x0000000000560000-0x0000000000660000-memory.dmp
    Filesize

    1024KB

    Download
  • memory/4648-137-0x0000000000401000-0x0000000000506000-memory.dmp
    Filesize

    1.0MB

    Download
  • memory/4648-134-0x0000000000000000-mapping.dmp
    Download
  • memory/4772-150-0x0000000000000000-mapping.dmp
    Download
  • memory/4772-156-0x0000000000560000-0x0000000000660000-memory.dmp
    Filesize

    1024KB

    Download
  • memory/4772-157-0x00007FFD6AC30000-0x00007FFD6AE25000-memory.dmp
    Filesize

    2.0MB

    Download
  • memory/4772-158-0x0000000077DD0000-0x0000000077F73000-memory.dmp
    Filesize

    1.6MB

    Download
  • memory/4788-149-0x00007FFD6AC30000-0x00007FFD6AE25000-memory.dmp
    Filesize

    2.0MB

    Download
  • memory/4788-148-0x00000000005F0000-0x00000000005FD000-memory.dmp
    Filesize

    52KB

    Download
  • memory/4788-143-0x0000000000000000-mapping.dmp
    Download
  • memory/4788-154-0x0000000077DD0000-0x0000000077F73000-memory.dmp
    Filesize

    1.6MB

    Download