wannacry | a00b12e44cb4c3318330762c1e8ee9e2614867c4447b49b265a7634e4e852861

General

Target

a80b33ae1ceefbf0d864b297761c85dd_JaffaCakes118.dll
Size

5.0MB
MD5

a80b33ae1ceefbf0d864b297761c85dd
SHA1

39c8486ebd2bf7052c886f84d1fa6c4c3fc4f013
SHA256

a00b12e44cb4c3318330762c1e8ee9e2614867c4447b49b265a7634e4e852861
SHA512

fddc01dcd3d53abba313bf531a0ff39362c908047c6b043b5f11b212c8e7e94ae80f0889b5ffc6f3b1eb6f8371d4fc4657a01225ef13fc72937548672d08cf1a
SSDEEP

24576:SbLgddQhfdmMSirYbcMNgef0QeQjG/D8kIqRYoAdNLKz6626:SnAQqMSPbcBVQej/1INR

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3318) amount of remote hosts 1 TTPs
This may indicate a network scan to discover remotely running services.
discovery

Network Service Discovery
T1046
Executes dropped EXE 3 IoCs

Processes:

mssecsvc.exemssecsvc.exetasksche.exe

pid process

2588 mssecsvc.exe
2032 mssecsvc.exe
832 tasksche.exe
Creates a large amount of network flows 1 TTPs
This may indicate a network scan to discover remotely running services.
discovery

Network Service Discovery
T1046

pid	process
2588	mssecsvc.exe
2032	mssecsvc.exe
832	tasksche.exe

Drops file in System32 directory 1 IoCs

Processes:

mssecsvc.exe

description	ioc	process
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\Temporary Internet Files\counters.dat	mssecsvc.exe

Drops file in Windows directory 2 IoCs

Processes:

rundll32.exemssecsvc.exe

description ioc process

File created C:\WINDOWS\mssecsvc.exe rundll32.exe
File created C:\WINDOWS\tasksche.exe mssecsvc.exe

description	ioc	process
File created	C:\WINDOWS\mssecsvc.exe	rundll32.exe
File created	C:\WINDOWS\tasksche.exe	mssecsvc.exe

Modifies data under HKEY_USERS 24 IoCs

Processes:

mssecsvc.exe

description	ioc	process
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{8C4771B3-6C57-4883-B23F-4833CE0DDB80}	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{8C4771B3-6C57-4883-B23F-4833CE0DDB80}\WpadDecisionTime = d0050fd915beda01	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{8C4771B3-6C57-4883-B23F-4833CE0DDB80}\WpadDecision = "0"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\b6-e7-f1-18-ba-f8\WpadDecision = "0"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{8C4771B3-6C57-4883-B23F-4833CE0DDB80}\b6-e7-f1-18-ba-f8	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\b6-e7-f1-18-ba-f8\WpadDecisionReason = "1"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\b6-e7-f1-18-ba-f8\WpadDecisionTime = d0050fd915beda01	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0"	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f0066000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{8C4771B3-6C57-4883-B23F-4833CE0DDB80}\WpadDecisionReason = "1"	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{8C4771B3-6C57-4883-B23F-4833CE0DDB80}\WpadNetworkName = "Network 3"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\b6-e7-f1-18-ba-f8	mssecsvc.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 2468 wrote to memory of 2892	2468	rundll32.exe	rundll32.exe
PID 2468 wrote to memory of 2892	2468	rundll32.exe	rundll32.exe
PID 2468 wrote to memory of 2892	2468	rundll32.exe	rundll32.exe
PID 2468 wrote to memory of 2892	2468	rundll32.exe	rundll32.exe
PID 2468 wrote to memory of 2892	2468	rundll32.exe	rundll32.exe
PID 2468 wrote to memory of 2892	2468	rundll32.exe	rundll32.exe
PID 2468 wrote to memory of 2892	2468	rundll32.exe	rundll32.exe
PID 2892 wrote to memory of 2588	2892	rundll32.exe	mssecsvc.exe
PID 2892 wrote to memory of 2588	2892	rundll32.exe	mssecsvc.exe
PID 2892 wrote to memory of 2588	2892	rundll32.exe	mssecsvc.exe
PID 2892 wrote to memory of 2588	2892	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\a80b33ae1ceefbf0d864b297761c85dd_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2468

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\a80b33ae1ceefbf0d864b297761c85dd_JaffaCakes118.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:2892

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:2588

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:832

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- Drops file in System32 directory
- Modifies data under HKEY_USERS
PID:2032

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Discovery

2

T1046

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\mssecsvc.exe

Filesize
3.6MB

MD5
466986e368d9ed44c708aae2c707578c

SHA1
462b6d41fd4d26fc0f87a91c553730a50efb9b62

SHA256
b0ab77621ba7362b29d29acd42f79e5a03748c3b0e73791e2a4f33b938e10279

SHA512
67dde24c20874dacb5d2c003096fba9c4f0e081ac0c578c6ecdbfbdb8c4fbd3aa2aae8d5da9238109af32b576c89fea17f5bba35cb9e3e8b10405f7c3b892024

Download Submit
C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
3cb84024a4143e76401de7b8c5e0fbf5

SHA1
e7a88ee92809a399cf6a0ddf0e363b9649e99614

SHA256
3f611d1e66c61213948d31e9e67c263cd87c24fbb8373d923bf6408b2ddaecf2

SHA512
b0d732e436a1e7dd67bf47b02ff16272ce81defd83afb0edb595e3cbb76e801687d399950bf454b3a9fd6c77ebfe278e3a31dee59e5002859c2e06c280732b39

Download Submit

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads