Overview

overview

10

Static

static

8

test/0b627...5b.doc

windows10_x64

10

test/0dded...66.doc

windows10_x64

10

test/91B5D...9D.msi

windows10_x64

8

test/ed01e...aa.exe

windows10_x64

10

test/fe9d7...8f.exe

windows10_x64

10

Sharing

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General

  • Target

    gevaarlijk.zip

  • Size

    7.3MB

  • Sample

    211013-lth73sdhf9

  • MD5

    d67d29dfc872a069a1f6fe7eec57becb

  • SHA1

    e47cf8238cfb8aa1012e5de1e44d46b23d867f97

  • SHA256

    72b228f51cf5a1b7600f0e0848145e4e54e54838977a5a5b1c85f69b64b92cf5

  • SHA512

    8302ebb02d97800dc6495101129930606a65096556b1d004b94d757a31d0c8935edca87d072d8c0059c055203bead0a2d59a0cf7150f6f954b0be0bfc9849dc7

Score
10/10
flawedammyywannacrydiscoveryevasionmacromacro_on_actionpersistenceransomwarespywarestealertrojanworm

Malware Config

Extracted

Language
ps1
Deobfuscated
URLs
exe.dropper

http://www.hopeintlschool.org/FQ9AFMoF8GZKwyVvg_GC
exe.dropper

http://antigua.aguilarnoticias.com/nYZZcHxoYdA
exe.dropper

http://teatrul-de-poveste.ro/wp-content/themes/wcFvmRjqfPbdA
exe.dropper

http://mywedphoto.ru/SPcBpzOvD6_bogkPa
exe.dropper

http://epl.tmweb.ru/QBSLvgDEuAXTt_ETNrGAVki

Extracted

Language
ps1
Deobfuscated
URLs
exe.dropper

http://www.serefozata.com/axf
exe.dropper

http://www.livingbranchanimalsciences.com/zVMQFL
exe.dropper

http://www.donghodaian.com/jiPViP
exe.dropper

http://sprayzee.com/iiWYe6z
exe.dropper

http://yasarkemalplatformu.org/s

Extracted

Path

C:\Users\Admin\AppData\Local\Temp\test\@Please_Read_Me@.txt

Family

wannacry

Ransom Note
Q: What's wrong with my files? A: Ooops, your important files are encrypted. It means you will not be able to access them anymore until they are decrypted. If you follow our instructions, we guarantee that you can decrypt all your files quickly and safely! Let's start decrypting! Q: What do I do? A: First, you need to pay service fees for the decryption. Please send $300 worth of bitcoin to this bitcoin address: 115p7UMMngoj1pMvkpHijcRdfJNXj6LrLn Next, please find an application file named "@WanaDecryptor@.exe". It is the decrypt software. Run and follow the instructions! (You may need to disable your antivirus for a while.) Q: How can I trust? A: Don't worry about decryption. We will decrypt your files surely because nobody will trust us if we cheat users. * If you need our assistance, send a message by clicking <Contact Us> on the decryptor window. �
Wallets

115p7UMMngoj1pMvkpHijcRdfJNXj6LrLn

Targets

    • Target

      test/0b627b4eca9b9e8bd04a0d1a103876f6e0fa91049fd0b51bae9ae41acaacf15b.doc

    • Size

      265KB

    • MD5

      34c85b83169b5e70bbfc76c2d6de2be0

    • SHA1

      cf7d59f9e2774b8b2de9f578bad3b78947d0c3f8

    • SHA256

      0b627b4eca9b9e8bd04a0d1a103876f6e0fa91049fd0b51bae9ae41acaacf15b

    • SHA512

      0610b68ef9916c73ed782dc60045c914c52dff1dc1258b634dd009303a4837b403334f2e6c35f137e12ca473f30c747cd9e08df2acbc3d2a9a6790b1b469eb4e

    Score
    10/10

    • Process spawned unexpected child process

      This typically indicates the parent process was compromised via an exploit or macro.

    • Blocklisted process makes network request

    behavioral1

    • Target

      test/0dded430c1958ae0ec60c2d50ab99f562269ad1ee09db17606661bd55cd29c66.doc

    • Size

      81KB

    • MD5

      fac7b441a730abf96b210a8db9dbf3d1

    • SHA1

      9f5bb869b95136f51b954e4284f99168ff0e91fb

    • SHA256

      0dded430c1958ae0ec60c2d50ab99f562269ad1ee09db17606661bd55cd29c66

    • SHA512

      0a5ec69ec554639ede43c359f38f8d2e52718b7e29a06aa112ff8cdc99b2777a39c3a9455d3796033a813cceda7487104fb8f0027eccfa138bcd0c2064606f07

    Score
    10/10

    • Process spawned unexpected child process

      This typically indicates the parent process was compromised via an exploit or macro.

    • Blocklisted process makes network request

    • An obfuscated cmd.exe command-line is typically used to evade detection.

    behavioral2

    • Target

      test/91B5DB3C0CCBD68BD04C24571E27F99D.msi

    • Size

      277KB

    • MD5

      91b5db3c0ccbd68bd04c24571e27f99d

    • SHA1

      b01cb4fe38315d41fcbe9c6278ebe4574496ab0d

    • SHA256

      ec85138598c57c6a6bdb5ed470614f582d3b5a8c6b243eb2f41b9970ea13d130

    • SHA512

      9f0b07f961625fcc06ee64fcfe5e35e0d40db81f75c3cbc584434c1925fac241db69cac3c1a1bf329d965a4df9bdaa53c13bb8ea3206e2c9d4facf7f74ba21b7

    Score
    8/10

    • Blocklisted process makes network request

    • Executes dropped EXE

    • Drops startup file

    • Loads dropped DLL

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • Looks up external IP address via web service

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

    behavioral3

    • Target

      test/ed01ebfbc9eb5bbea545af4d01bf5f1071661840480439c6e5babe8e080e41aa.exe

    • Size

      3.4MB

    • MD5

      84c82835a5d21bbcf75a61706d8ab549

    • SHA1

      5ff465afaabcbf0150d1a3ab2c2e74f3a4426467

    • SHA256

      ed01ebfbc9eb5bbea545af4d01bf5f1071661840480439c6e5babe8e080e41aa

    • SHA512

      90723a50c20ba3643d625595fd6be8dcf88d70ff7f4b4719a88f055d5b3149a4231018ea30d375171507a147e59f73478c0c27948590794554d031e7d54b7244

    Score
    10/10
    wannacrydiscoverypersistenceransomwarespywarestealerworm

    • Wannacry

      WannaCry is a ransomware cryptoworm.

      ransomwarewormwannacry

    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

      ransomware

    • Executes dropped EXE

    • Modifies extensions of user files

      Ransomware generally changes the extension on encrypted files.

      ransomware

    • Drops startup file

    • Loads dropped DLL

    • Modifies file permissions

      discovery

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

      spywarestealer

    • Adds Run key to start application

      persistence

    • Sets desktop wallpaper using registry

      ransomware
    behavioral4

    • Target

      test/fe9d72dd4b046bafdd144902ab570297629f83d06afb5a9ba7703382a29d588f.exe

    • Size

      3.6MB

    • MD5

      743a6891999db5d7179091aba5f98fdb

    • SHA1

      eeca4b8f88fcae9db6f54304270699d459fb5722

    • SHA256

      fe9d72dd4b046bafdd144902ab570297629f83d06afb5a9ba7703382a29d588f

    • SHA512

      9edef033663c828536190332ec87ac0096ffddae934d17c51b255a55ecb05774211a0edb1915c19384641befa291cfdfd2e3f878bf3b827f8b203ec1bee9dd96

    Score
    10/10
    flawedammyyevasionpersistencetrojan

    • FlawedAmmyy RAT

      Remote-access trojan based on leaked code for the Ammyy remote admin software.

      trojanflawedammyy

    • Creates new service(s)

      persistence

    • Executes dropped EXE

    • Modifies Windows Firewall

      evasion

    • Checks computer location settings

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

    • Loads dropped DLL

    • Adds Run key to start application

      persistence

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    behavioral5

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

2
T1060

Hidden Files and Directories

1
T1158

New Service

1
T1050

Modify Existing Service

1
T1031

Privilege Escalation

New Service

1
T1050

Defense Evasion

File Deletion

2
T1107

File Permissions Modification

1
T1222

Modify Registry

7
T1112

Hidden Files and Directories

1
T1158

Credential Access

Credentials in Files

1
T1081

Discovery

Query Registry

6
T1012

System Information Discovery

9
T1082

Peripheral Device Discovery

1
T1120

Lateral Movement

Collection

Data from Local System

1
T1005

Exfiltration

Command and Control

Impact

Inhibit System Recovery

2
T1490

Defacement

1
T1491

Tasks