wannacry | 41f69f5fe88422ba11f593ce216cee84775c5c896defb9eab391fa06bcc24cf5

General

Target

41f69f5fe88422ba11f593ce216cee84775c5c896defb9eab391fa06bcc24cf5.dll
Size

5.0MB
MD5

ad46e85c3890145837f40e4f26720a87
SHA1

6e349a578fcbd339f54f718caf9371a887c5665f
SHA256

41f69f5fe88422ba11f593ce216cee84775c5c896defb9eab391fa06bcc24cf5
SHA512

dc7146efa798f3b3194b30c49bfa82a47f09f4f961afacebdff6065c3fbd89c67f251aabf18da29b718c344a9b02727493353ea8347e0f4dd164315690dbbed4

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 (1290) 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 3 IoCs

Processes:

mssecsvc.exemssecsvc.exetasksche.exe

pid process

1456 mssecsvc.exe
1200 mssecsvc.exe
268 tasksche.exe

pid	process
1456	mssecsvc.exe
1200	mssecsvc.exe
268	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 (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{D24B047A-635D-4893-8715-6CE1BDA2A16F}\WpadDecisionReason = "1"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{D24B047A-635D-4893-8715-6CE1BDA2A16F}\WpadDecision = "0"	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
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\32-39-56-89-e1-f7\WpadDecisionTime = 008dbe77a792d801	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\32-39-56-89-e1-f7\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 (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
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f0086000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{D24B047A-635D-4893-8715-6CE1BDA2A16F}	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\32-39-56-89-e1-f7	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{D24B047A-635D-4893-8715-6CE1BDA2A16F}\32-39-56-89-e1-f7	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\Wpad\32-39-56-89-e1-f7\WpadDecisionReason = "1"	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\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 (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{D24B047A-635D-4893-8715-6CE1BDA2A16F}\WpadDecisionTime = 008dbe77a792d801	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{D24B047A-635D-4893-8715-6CE1BDA2A16F}\WpadNetworkName = "Network 3"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0"	mssecsvc.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 632 wrote to memory of 1628	632	rundll32.exe	rundll32.exe
PID 632 wrote to memory of 1628	632	rundll32.exe	rundll32.exe
PID 632 wrote to memory of 1628	632	rundll32.exe	rundll32.exe
PID 632 wrote to memory of 1628	632	rundll32.exe	rundll32.exe
PID 632 wrote to memory of 1628	632	rundll32.exe	rundll32.exe
PID 632 wrote to memory of 1628	632	rundll32.exe	rundll32.exe
PID 632 wrote to memory of 1628	632	rundll32.exe	rundll32.exe
PID 1628 wrote to memory of 1456	1628	rundll32.exe	mssecsvc.exe
PID 1628 wrote to memory of 1456	1628	rundll32.exe	mssecsvc.exe
PID 1628 wrote to memory of 1456	1628	rundll32.exe	mssecsvc.exe
PID 1628 wrote to memory of 1456	1628	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\41f69f5fe88422ba11f593ce216cee84775c5c896defb9eab391fa06bcc24cf5.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:632

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\41f69f5fe88422ba11f593ce216cee84775c5c896defb9eab391fa06bcc24cf5.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:1628

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:1456

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:268

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:1200

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Scanning

1

T1046

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\WINDOWS\mssecsvc.exe
Filesize
3.6MB

MD5
134bf392d1f94f6769ddd428008d9649

SHA1
de91f6fffce478eaa2aafccf1781439968965447

SHA256
bfc2651980c65c67db98f202bf72e063dab60dc7714e7ed33a5f0a5ffa6f2c3b

SHA512
7555e446aa60008cadf567425429579ef5f98aa88580e9b97f49e52191338026d2c13a6da697f0b0e99c90aa37f97a29ae715994b0b57f30896dded8c426f2e5

Download Submit
C:\Windows\mssecsvc.exe
Filesize
3.6MB

MD5
134bf392d1f94f6769ddd428008d9649

SHA1
de91f6fffce478eaa2aafccf1781439968965447

SHA256
bfc2651980c65c67db98f202bf72e063dab60dc7714e7ed33a5f0a5ffa6f2c3b

SHA512
7555e446aa60008cadf567425429579ef5f98aa88580e9b97f49e52191338026d2c13a6da697f0b0e99c90aa37f97a29ae715994b0b57f30896dded8c426f2e5

Download Submit
C:\Windows\mssecsvc.exe
Filesize
3.6MB

MD5
134bf392d1f94f6769ddd428008d9649

SHA1
de91f6fffce478eaa2aafccf1781439968965447

SHA256
bfc2651980c65c67db98f202bf72e063dab60dc7714e7ed33a5f0a5ffa6f2c3b

SHA512
7555e446aa60008cadf567425429579ef5f98aa88580e9b97f49e52191338026d2c13a6da697f0b0e99c90aa37f97a29ae715994b0b57f30896dded8c426f2e5

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

MD5
302259d656616b116cf96d64964a471a

SHA1
a74de128df0e7e243e9d8b474e155675e13ba4b0

SHA256
332b33d2ae5b777ff16b03de5d5b345abb9630fe0a27b85277a79710aa010c0e

SHA512
00b0e5a7cf50d6759ecc406d626fa0e0ecb499125afcc2785b91de0b967a19f1ae677587e9106f59f5249acdda2acf87643da6ac45e7a8b0212b28d1edfc47d6

Download Submit
memory/1456-56-0x0000000000000000-mapping.dmp

Download
memory/1628-54-0x0000000000000000-mapping.dmp

Download
memory/1628-55-0x0000000075391000-0x0000000075393000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads