Overview

overview

10

Static

static

Attached ...OC.exe

windows7-x64

10

Attached ...OC.exe

windows10-2004-x64

7

Analysis

  • max time kernel
    152s
  • max time network
    158s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-11-2022 14:41

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General

  • Target

    Attached Invoice_72_1421 DOC.exe

  • Size

    245KB

  • MD5

    13940ca97783f75831c3f0a72c59ec53

  • SHA1

    d0bea9d294ab885228296157122414eb372f5a56

  • SHA256

    810b8a39783409f1b3f56e78d764a5abda68ff7bf08ae721ba798934568db7f3

  • SHA512

    e9169747a0c4f9c90bba3fabe3d71b4985410e221be37c6fe31c2bbec4a50299d3a4dd2eaffe087b65b6a70c857be127683e78fc685ce5868ddcb4428a4f78bf

  • SSDEEP

    3072:3LfVxlyEZfp9zIzjBlLetfKhoewsEvTnL+pssSWdwU8xbtEbAqPsfSliJx:btXZXPzd5vrL8ssST5xZEBPsDJ

Score
7/10
discovery

Malware Config

Signatures

  • Checks QEMU agent file 2 TTPs 2 IoCs

    Checks presence of QEMU agent, possibly to detect virtualization.

  • Loads dropped DLL 1 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

    discovery
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Program Files directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Attached Invoice_72_1421 DOC.exe
    "C:\Users\Admin\AppData\Local\Temp\Attached Invoice_72_1421 DOC.exe"
    1⤵
    • Checks QEMU agent file
    • Loads dropped DLL
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of SetThreadContext
    • Drops file in Program Files directory
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:4252
    • C:\Users\Admin\AppData\Local\Temp\Attached Invoice_72_1421 DOC.exe
      "C:\Users\Admin\AppData\Local\Temp\Attached Invoice_72_1421 DOC.exe"
      2⤵
      • Checks QEMU agent file
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      PID:3752

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2
T1012

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\nswF1AB.tmp\System.dll
    Filesize

    11KB

    MD5

    7399323923e3946fe9140132ac388132

    SHA1

    728257d06c452449b1241769b459f091aabcffc5

    SHA256

    5a1c20a3e2e2eb182976977669f2c5d9f3104477e98f74d69d2434e79b92fdc3

    SHA512

    d6f28ba761351f374ae007c780be27758aea7b9f998e2a88a542eede459d18700adffe71abcb52b8a8c00695efb7ccc280175b5eeb57ca9a645542edfabb64f1

    Download Submit
  • memory/3752-141-0x0000000001660000-0x0000000001760000-memory.dmp
    Filesize

    1024KB

    Download
  • memory/3752-145-0x00000000777C0000-0x0000000077963000-memory.dmp
    Filesize

    1.6MB

    Download
  • memory/3752-144-0x00007FF917850000-0x00007FF917A45000-memory.dmp
    Filesize

    2.0MB

    Download
  • memory/3752-143-0x00000000777C0000-0x0000000077963000-memory.dmp
    Filesize

    1.6MB

    Download
  • memory/3752-137-0x0000000000000000-mapping.dmp
    Download
  • memory/3752-142-0x00007FF917850000-0x00007FF917A45000-memory.dmp
    Filesize

    2.0MB

    Download
  • memory/3752-139-0x0000000000400000-0x0000000001654000-memory.dmp
    Filesize

    18.3MB

    Download
  • memory/3752-140-0x0000000001660000-0x0000000001760000-memory.dmp
    Filesize

    1024KB

    Download
  • memory/4252-135-0x00007FF917850000-0x00007FF917A45000-memory.dmp
    Filesize

    2.0MB

    Download
  • memory/4252-138-0x00000000777C0000-0x0000000077963000-memory.dmp
    Filesize

    1.6MB

    Download
  • memory/4252-136-0x00000000777C0000-0x0000000077963000-memory.dmp
    Filesize

    1.6MB

    Download
  • memory/4252-134-0x0000000004A40000-0x0000000004B41000-memory.dmp
    Filesize

    1.0MB

    Download
  • memory/4252-133-0x0000000004A40000-0x0000000004B41000-memory.dmp
    Filesize

    1.0MB

    Download