wannacry | 205d33b4af4c3a2a5ae9151558a724a48e9205b57fbb39a66a98320f0ff3b93d

General

Target

Windows/MSSECSVC.exe
Size

3.6MB
MD5

55816e3a47bd0ee742f41153dfcd76ad
SHA1

78dbe08344794c928188a7421c52720844f28b13
SHA256

a52e904523d45013ebb109d088626731400ddd031d25f60ee0c61c19e5c5a167
SHA512

5b3a447a0ae0732bee048a5c03d5656ec6fc8b0a13b6921e537bbb212fe83ce65d518cd1b114648d338445b3ceb3afcb9479b723c79ff292ecd46c0d88019aa8

Score

10^/10

wannacry discovery ransomware suricata worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
suricata: ET MALWARE Known Sinkhole Response Kryptos Logic
suricata: ET MALWARE Known Sinkhole Response Kryptos Logic
suricata
suricata: ET MALWARE W32/WannaCry.Ransomware Killswitch Domain HTTP Request 1
suricata: ET MALWARE W32/WannaCry.Ransomware Killswitch Domain HTTP Request 1
suricata
Contacts a large (1293) amount of remote hosts 1 TTPs
This may indicate a network scan to discover remotely running services.
discovery

Network Service Scanning
T1046
Executes dropped EXE 1 IoCs

Processes:

tasksche.exe

pid process

700 tasksche.exe

pid	process
700	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 1 IoCs

Processes:

MSSECSVC.exe

description ioc process

File created C:\WINDOWS\tasksche.exe MSSECSVC.exe

description	ioc	process
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	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\Cookies\CachePrefix = "Cookie:"	MSSECSVC.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f0080000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	MSSECSVC.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\5a-09-7b-ea-76-26\WpadDecision = "0"	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 (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1"	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\{DB0039D6-A40A-4438-AEC1-AF4318BBB961}	MSSECSVC.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\5a-09-7b-ea-76-26	MSSECSVC.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\5a-09-7b-ea-76-26\WpadDecisionTime = a09adc27867ed801	MSSECSVC.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	MSSECSVC.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	MSSECSVC.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\5a-09-7b-ea-76-26\WpadDecisionReason = "1"	MSSECSVC.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{DB0039D6-A40A-4438-AEC1-AF4318BBB961}\WpadNetworkName = "Network 3"	MSSECSVC.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{DB0039D6-A40A-4438-AEC1-AF4318BBB961}\5a-09-7b-ea-76-26	MSSECSVC.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	MSSECSVC.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{DB0039D6-A40A-4438-AEC1-AF4318BBB961}\WpadDecisionReason = "1"	MSSECSVC.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{DB0039D6-A40A-4438-AEC1-AF4318BBB961}\WpadDecisionTime = a09adc27867ed801	MSSECSVC.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{DB0039D6-A40A-4438-AEC1-AF4318BBB961}\WpadDecision = "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

C:\Users\Admin\AppData\Local\Temp\Windows\MSSECSVC.exe
"C:\Users\Admin\AppData\Local\Temp\Windows\MSSECSVC.exe"
1⤵
- Drops file in Windows directory
PID:1984

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
2⤵
- Executes dropped EXE
PID:700

C:\Users\Admin\AppData\Local\Temp\Windows\MSSECSVC.exe
C:\Users\Admin\AppData\Local\Temp\Windows\MSSECSVC.exe -m security
1⤵
- Drops file in System32 directory
- Modifies data under HKEY_USERS
PID:1064

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Scanning

1

T1046

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
466b6d86ce08666e933aed703196033f

SHA1
683b2dddcd629ec1534bcb411912a5285fb5b989

SHA256
982a1485dcd70fbdc0c34f81d1b4a798cc0aca74495b505abfe277a65ef5d783

SHA512
d979b4887dbd49aee24e11a20584da9be4d6bdc5eeb57cff9edef1d85916b1936cfe513ac4317c00546497c0b23cd52d664ea6a9752b3ba5e98e9af8d7daf750

Download Submit
memory/1984-54-0x0000000076571000-0x0000000076573000-memory.dmp

Filesize
8KB

Download

Analysis

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