wannacry | abc192687665e185a0a3c52fb0f7c8709e037f2ee706fd33491077551cc1442c

General

Target

894db8bbeec08bdcacb8ddaa21feebed_JaffaCakes118.dll
Size

5.0MB
MD5

894db8bbeec08bdcacb8ddaa21feebed
SHA1

50b593a42ea69ed53dcb8daaab54906365c4b01b
SHA256

abc192687665e185a0a3c52fb0f7c8709e037f2ee706fd33491077551cc1442c
SHA512

5e2272b4a8ea8a84eba5aa1443aa8e56c5a871255fc52c59296cfff76c42aac74e9f31860d8fcd448dfe0356eb52c4a4590d246f23b25782e7107febf4a21fb4
SSDEEP

98304:+DqPoBhz1aRxcSUDk36SAEdhvxWa9P59:+DqPe1Cxcxk3ZAEUad

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3155) 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

2592 mssecsvc.exe
2612 mssecsvc.exe
2416 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
2592	mssecsvc.exe
2612	mssecsvc.exe
2416	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
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{7C858C43-4292-41AA-99F4-32E1CDB91BFF}\WpadNetworkName = "Network 3"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\66-55-12-58-29-b7	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\66-55-12-58-29-b7\WpadDecisionTime = 600ed530d8b3da01	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\Cookies\CachePrefix = "Cookie:"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{7C858C43-4292-41AA-99F4-32E1CDB91BFF}	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{7C858C43-4292-41AA-99F4-32E1CDB91BFF}\WpadDecision = "0"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\66-55-12-58-29-b7\WpadDecision = "0"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{7C858C43-4292-41AA-99F4-32E1CDB91BFF}\66-55-12-58-29-b7	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	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	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{7C858C43-4292-41AA-99F4-32E1CDB91BFF}\WpadDecisionTime = 600ed530d8b3da01	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f00e6000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{7C858C43-4292-41AA-99F4-32E1CDB91BFF}\WpadDecisionReason = "1"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\66-55-12-58-29-b7\WpadDecisionReason = "1"	mssecsvc.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 2272 wrote to memory of 2060	2272	rundll32.exe	rundll32.exe
PID 2272 wrote to memory of 2060	2272	rundll32.exe	rundll32.exe
PID 2272 wrote to memory of 2060	2272	rundll32.exe	rundll32.exe
PID 2272 wrote to memory of 2060	2272	rundll32.exe	rundll32.exe
PID 2272 wrote to memory of 2060	2272	rundll32.exe	rundll32.exe
PID 2272 wrote to memory of 2060	2272	rundll32.exe	rundll32.exe
PID 2272 wrote to memory of 2060	2272	rundll32.exe	rundll32.exe
PID 2060 wrote to memory of 2592	2060	rundll32.exe	mssecsvc.exe
PID 2060 wrote to memory of 2592	2060	rundll32.exe	mssecsvc.exe
PID 2060 wrote to memory of 2592	2060	rundll32.exe	mssecsvc.exe
PID 2060 wrote to memory of 2592	2060	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\894db8bbeec08bdcacb8ddaa21feebed_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2272

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\894db8bbeec08bdcacb8ddaa21feebed_JaffaCakes118.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:2060

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:2592

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:2416

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:2612

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
5821d7401d6a9708e931130ab0711a51

SHA1
ef2c2eb28a6368fd136cd729fca0026163d1084c

SHA256
8f3494424b80ff468177cea2320256efd95f128d77f1b42a21681eb5c46f4d5f

SHA512
c509f1bf8d298b83c1da80aeb4dd8f4d98456e242ef07ea31800076d3a76fa8d9caa2e1cd3dcdf1e26d70113929dbab9e7ccd38edfba484f075f6d13f93c993e

Download Submit
C:\Windows\tasksche.exe
Filesize
3.4MB

MD5
0749681311c27dcae1f71a8d203d438a

SHA1
30ba4b8d7abc3dee3f27d086b2e67e4adaf2118c

SHA256
66ad4a0f88bbe7cdafe0fe23d08028795b9196af77ae0c52ec1aa60db362fc54

SHA512
49613836c9beb89f896a228f2f9cba947fbcea34bb486b2e9c07c3b37db4bb85c1bb9c4398e4e47efbffb68cbd427772a2b746ce38c96e308d307ef14a4991a7

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads