Malware Analysis Report

2024-10-19 07:29

Sample ID 240520-mk7dzsfe45
Target c94e6405266a5101501962b24eb1c43ad64e271eb3346e8889c610cec267eec2.exe
SHA256 c94e6405266a5101501962b24eb1c43ad64e271eb3346e8889c610cec267eec2
Tags
wannacry ransomware worm
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

c94e6405266a5101501962b24eb1c43ad64e271eb3346e8889c610cec267eec2

Threat Level: Known bad

The file c94e6405266a5101501962b24eb1c43ad64e271eb3346e8889c610cec267eec2.exe was found to be: Known bad.

Malicious Activity Summary

wannacry ransomware worm

Wannacry

Executes dropped EXE

Drops file in System32 directory

Drops file in Windows directory

Unsigned PE

Modifies data under HKEY_USERS

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2024-05-20 10:32

Signatures

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral2

Detonation Overview

Submitted

2024-05-20 10:32

Reported

2024-05-20 10:32

Platform

win10v2004-20240508-en

Max time kernel

9s

Max time network

15s

Command Line

"C:\Users\Admin\AppData\Local\Temp\c94e6405266a5101501962b24eb1c43ad64e271eb3346e8889c610cec267eec2.exe"

Signatures

Wannacry

ransomware worm wannacry

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\WINDOWS\tasksche.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\WINDOWS\tasksche.exe C:\Users\Admin\AppData\Local\Temp\c94e6405266a5101501962b24eb1c43ad64e271eb3346e8889c610cec267eec2.exe N/A

Modifies data under HKEY_USERS

Description Indicator Process Target
Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1" C:\Users\Admin\AppData\Local\Temp\c94e6405266a5101501962b24eb1c43ad64e271eb3346e8889c610cec267eec2.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0" C:\Users\Admin\AppData\Local\Temp\c94e6405266a5101501962b24eb1c43ad64e271eb3346e8889c610cec267eec2.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ C:\Users\Admin\AppData\Local\Temp\c94e6405266a5101501962b24eb1c43ad64e271eb3346e8889c610cec267eec2.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1" C:\Users\Admin\AppData\Local\Temp\c94e6405266a5101501962b24eb1c43ad64e271eb3346e8889c610cec267eec2.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1" C:\Users\Admin\AppData\Local\Temp\c94e6405266a5101501962b24eb1c43ad64e271eb3346e8889c610cec267eec2.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\c94e6405266a5101501962b24eb1c43ad64e271eb3346e8889c610cec267eec2.exe

"C:\Users\Admin\AppData\Local\Temp\c94e6405266a5101501962b24eb1c43ad64e271eb3346e8889c610cec267eec2.exe"

C:\Users\Admin\AppData\Local\Temp\c94e6405266a5101501962b24eb1c43ad64e271eb3346e8889c610cec267eec2.exe

C:\Users\Admin\AppData\Local\Temp\c94e6405266a5101501962b24eb1c43ad64e271eb3346e8889c610cec267eec2.exe -m security

C:\WINDOWS\tasksche.exe

C:\WINDOWS\tasksche.exe /i

Network

Country Destination Domain Proto
US 8.8.8.8:53 www.iuqerfsodp9ifjaposdfjhgosurijfaewrwergwea.com udp
US 104.16.166.228:80 www.iuqerfsodp9ifjaposdfjhgosurijfaewrwergwea.com tcp
US 104.16.166.228:80 www.iuqerfsodp9ifjaposdfjhgosurijfaewrwergwea.com tcp
US 8.8.8.8:53 228.166.16.104.in-addr.arpa udp
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 140.32.126.40.in-addr.arpa udp
NL 23.62.61.72:443 www.bing.com tcp
US 8.8.8.8:53 72.61.62.23.in-addr.arpa udp

Files

C:\Windows\tasksche.exe

MD5 d59d6d48c3d6e9292c296e557a186391
SHA1 7f0916d7befcf929521087cde11b6d94d7331154
SHA256 905ad8e2fc1f98ab1e934de1d01d85973291ccadd41c85ba1a7dcc3b2af6ed96
SHA512 7b2fc97070ac47e6596cfe0da96b1b1369feeb4ab62af136f172ee306187cee3e04b68b8f786d7b4b4dee49054d53a33cd8048abdc8cba9853b3e119a08ac23e

Analysis: behavioral1

Detonation Overview

Submitted

2024-05-20 10:32

Reported

2024-05-20 10:32

Platform

win7-20231129-en

Max time kernel

3s

Max time network

3s

Command Line

"C:\Users\Admin\AppData\Local\Temp\c94e6405266a5101501962b24eb1c43ad64e271eb3346e8889c610cec267eec2.exe"

Signatures

Wannacry

ransomware worm wannacry

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\WINDOWS\tasksche.exe N/A

Drops file in System32 directory

Description Indicator Process Target
File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\Temporary Internet Files\counters.dat C:\Users\Admin\AppData\Local\Temp\c94e6405266a5101501962b24eb1c43ad64e271eb3346e8889c610cec267eec2.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\WINDOWS\tasksche.exe C:\Users\Admin\AppData\Local\Temp\c94e6405266a5101501962b24eb1c43ad64e271eb3346e8889c610cec267eec2.exe N/A

Modifies data under HKEY_USERS

Description Indicator Process Target
Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{302F7048-0CF7-42DC-88DB-519C694E466D}\WpadDecision = "0" C:\Users\Admin\AppData\Local\Temp\c94e6405266a5101501962b24eb1c43ad64e271eb3346e8889c610cec267eec2.exe N/A
Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{302F7048-0CF7-42DC-88DB-519C694E466D}\WpadNetworkName = "Network 3" C:\Users\Admin\AppData\Local\Temp\c94e6405266a5101501962b24eb1c43ad64e271eb3346e8889c610cec267eec2.exe N/A
Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\1a-3a-af-96-97-95 C:\Users\Admin\AppData\Local\Temp\c94e6405266a5101501962b24eb1c43ad64e271eb3346e8889c610cec267eec2.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\1a-3a-af-96-97-95\WpadDecisionReason = "1" C:\Users\Admin\AppData\Local\Temp\c94e6405266a5101501962b24eb1c43ad64e271eb3346e8889c610cec267eec2.exe N/A
Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings C:\Users\Admin\AppData\Local\Temp\c94e6405266a5101501962b24eb1c43ad64e271eb3346e8889c610cec267eec2.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0" C:\Users\Admin\AppData\Local\Temp\c94e6405266a5101501962b24eb1c43ad64e271eb3346e8889c610cec267eec2.exe N/A
Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix C:\Users\Admin\AppData\Local\Temp\c94e6405266a5101501962b24eb1c43ad64e271eb3346e8889c610cec267eec2.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1" C:\Users\Admin\AppData\Local\Temp\c94e6405266a5101501962b24eb1c43ad64e271eb3346e8889c610cec267eec2.exe N/A
Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f0053000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 C:\Users\Admin\AppData\Local\Temp\c94e6405266a5101501962b24eb1c43ad64e271eb3346e8889c610cec267eec2.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{302F7048-0CF7-42DC-88DB-519C694E466D}\WpadDecisionReason = "1" C:\Users\Admin\AppData\Local\Temp\c94e6405266a5101501962b24eb1c43ad64e271eb3346e8889c610cec267eec2.exe N/A
Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{302F7048-0CF7-42DC-88DB-519C694E466D}\WpadDecisionTime = 80037f07a1aada01 C:\Users\Admin\AppData\Local\Temp\c94e6405266a5101501962b24eb1c43ad64e271eb3346e8889c610cec267eec2.exe N/A
Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{302F7048-0CF7-42DC-88DB-519C694E466D}\1a-3a-af-96-97-95 C:\Users\Admin\AppData\Local\Temp\c94e6405266a5101501962b24eb1c43ad64e271eb3346e8889c610cec267eec2.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings C:\Users\Admin\AppData\Local\Temp\c94e6405266a5101501962b24eb1c43ad64e271eb3346e8889c610cec267eec2.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0" C:\Users\Admin\AppData\Local\Temp\c94e6405266a5101501962b24eb1c43ad64e271eb3346e8889c610cec267eec2.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ C:\Users\Admin\AppData\Local\Temp\c94e6405266a5101501962b24eb1c43ad64e271eb3346e8889c610cec267eec2.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\1a-3a-af-96-97-95\WpadDecision = "0" C:\Users\Admin\AppData\Local\Temp\c94e6405266a5101501962b24eb1c43ad64e271eb3346e8889c610cec267eec2.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections C:\Users\Admin\AppData\Local\Temp\c94e6405266a5101501962b24eb1c43ad64e271eb3346e8889c610cec267eec2.exe N/A
Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:" C:\Users\Admin\AppData\Local\Temp\c94e6405266a5101501962b24eb1c43ad64e271eb3346e8889c610cec267eec2.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad C:\Users\Admin\AppData\Local\Temp\c94e6405266a5101501962b24eb1c43ad64e271eb3346e8889c610cec267eec2.exe N/A
Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{302F7048-0CF7-42DC-88DB-519C694E466D} C:\Users\Admin\AppData\Local\Temp\c94e6405266a5101501962b24eb1c43ad64e271eb3346e8889c610cec267eec2.exe N/A
Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\1a-3a-af-96-97-95\WpadDecisionTime = 80037f07a1aada01 C:\Users\Admin\AppData\Local\Temp\c94e6405266a5101501962b24eb1c43ad64e271eb3346e8889c610cec267eec2.exe N/A
Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 C:\Users\Admin\AppData\Local\Temp\c94e6405266a5101501962b24eb1c43ad64e271eb3346e8889c610cec267eec2.exe N/A
Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 C:\Users\Admin\AppData\Local\Temp\c94e6405266a5101501962b24eb1c43ad64e271eb3346e8889c610cec267eec2.exe N/A
Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:" C:\Users\Admin\AppData\Local\Temp\c94e6405266a5101501962b24eb1c43ad64e271eb3346e8889c610cec267eec2.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\c94e6405266a5101501962b24eb1c43ad64e271eb3346e8889c610cec267eec2.exe

"C:\Users\Admin\AppData\Local\Temp\c94e6405266a5101501962b24eb1c43ad64e271eb3346e8889c610cec267eec2.exe"

C:\Users\Admin\AppData\Local\Temp\c94e6405266a5101501962b24eb1c43ad64e271eb3346e8889c610cec267eec2.exe

C:\Users\Admin\AppData\Local\Temp\c94e6405266a5101501962b24eb1c43ad64e271eb3346e8889c610cec267eec2.exe -m security

C:\WINDOWS\tasksche.exe

C:\WINDOWS\tasksche.exe /i

Network

Country Destination Domain Proto
US 8.8.8.8:53 www.iuqerfsodp9ifjaposdfjhgosurijfaewrwergwea.com udp
US 104.16.166.228:80 www.iuqerfsodp9ifjaposdfjhgosurijfaewrwergwea.com tcp
US 104.16.166.228:80 www.iuqerfsodp9ifjaposdfjhgosurijfaewrwergwea.com tcp

Files

C:\Windows\tasksche.exe

MD5 d59d6d48c3d6e9292c296e557a186391
SHA1 7f0916d7befcf929521087cde11b6d94d7331154
SHA256 905ad8e2fc1f98ab1e934de1d01d85973291ccadd41c85ba1a7dcc3b2af6ed96
SHA512 7b2fc97070ac47e6596cfe0da96b1b1369feeb4ab62af136f172ee306187cee3e04b68b8f786d7b4b4dee49054d53a33cd8048abdc8cba9853b3e119a08ac23e