Overview

overview

7

Static

static

1

2320900000000.exe

windows7_x64

7

2320900000000.exe

windows10_x64

7

Analysis

  • max time kernel
    6s
  • max time network
    130s
  • platform
    windows7_x64
  • resource
    win7v20210410
  • submitted
    10-06-2021 23:08

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General

  • Target

    2320900000000.exe

  • Size

    494KB

  • MD5

    b17442f88ff7c42751412f361e99b4f6

  • SHA1

    483b3ad59a7c1f96c277d1a753a588f3fc8f4c6f

  • SHA256

    7320b115d96ae0e50fe44d8600bd0bd68e2fac3bb4604f8f333f04e247c301bd

  • SHA512

    6b29abb8791d0772d1b358459528121871a1be043f3a3ee60d4da5df3bdb74fc93239c0f41f88432327111323ce13534d1fb35631393bd7d9ab7720c00d5e45b

Score
7/10
persistence

Malware Config

Signatures

  • Loads dropped DLL 2 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
    persistence
  • Looks up external IP address via web service 3 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 5 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 5 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2320900000000.exe
    "C:\Users\Admin\AppData\Local\Temp\2320900000000.exe"
    1⤵
    • Loads dropped DLL
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:916
    • C:\Windows\Microsoft.NET\Framework\v2.0.50727\MSBuild.exe
      "C:\Users\Admin\AppData\Local\Temp\2320900000000.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1792

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1
T1060

Privilege Escalation

Defense Evasion

Modify Registry

1
T1112

Credential Access

Discovery

System Information Discovery

1
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

  • \Users\Admin\AppData\Local\Temp\nsc75FC.tmp\System.dll
    MD5

    fccff8cb7a1067e23fd2e2b63971a8e1

    SHA1

    30e2a9e137c1223a78a0f7b0bf96a1c361976d91

    SHA256

    6fcea34c8666b06368379c6c402b5321202c11b00889401c743fb96c516c679e

    SHA512

    f4335e84e6f8d70e462a22f1c93d2998673a7616c868177cac3e8784a3be1d7d0bb96f2583fa0ed82f4f2b6b8f5d9b33521c279a42e055d80a94b4f3f1791e0c

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  • \Users\Admin\AppData\Local\Temp\nsc75FC.tmp\System.dll
    MD5

    fccff8cb7a1067e23fd2e2b63971a8e1

    SHA1

    30e2a9e137c1223a78a0f7b0bf96a1c361976d91

    SHA256

    6fcea34c8666b06368379c6c402b5321202c11b00889401c743fb96c516c679e

    SHA512

    f4335e84e6f8d70e462a22f1c93d2998673a7616c868177cac3e8784a3be1d7d0bb96f2583fa0ed82f4f2b6b8f5d9b33521c279a42e055d80a94b4f3f1791e0c

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  • memory/916-60-0x0000000075011000-0x0000000075013000-memory.dmp
    Filesize

    8KB

    Download
  • memory/1792-63-0x000000000044284E-mapping.dmp
    Download
  • memory/1792-65-0x0000000000520000-0x0000000000521000-memory.dmp
    Filesize

    4KB

    Download