wannacry | d8ca9921e14601f55d5d0aa81bf47ff2850531697ce50862a4c9489184a71768

General

Target

b1c22e18d7e3f126ba7692efe3092ffa_JaffaCakes118.dll
Size

5.0MB
MD5

b1c22e18d7e3f126ba7692efe3092ffa
SHA1

8c945e136757b2a8cb889bdce0fdfdfbe6582504
SHA256

d8ca9921e14601f55d5d0aa81bf47ff2850531697ce50862a4c9489184a71768
SHA512

f7e1cfcfb39b20f2acc978916584a5b84cf56163d31c964dd403b9f4ecfa5753b3c2c316a57f9fdf20f7f07ba4dcadc6f3deea613a54a6e5c0001c5aaa2fe872
SSDEEP

12288:yebLgPlu+QhMbaIMu7L5NVErCA4z2g6rTcbckPU82900Ve7:zbLgddQhfdmMSirYbcMNge

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3115) 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

2692 mssecsvc.exe
2748 mssecsvc.exe
2708 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
2692	mssecsvc.exe
2748	mssecsvc.exe
2708	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\Wpad\{FC2E391A-4286-4C02-90F2-0E7FC3EA7136}	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{FC2E391A-4286-4C02-90F2-0E7FC3EA7136}\WpadDecisionTime = 2093c52fa7bfda01	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{FC2E391A-4286-4C02-90F2-0E7FC3EA7136}\b6-7c-36-87-bc-21	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	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 (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{FC2E391A-4286-4C02-90F2-0E7FC3EA7136}\WpadDecisionReason = "1"	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{FC2E391A-4286-4C02-90F2-0E7FC3EA7136}\WpadNetworkName = "Network 3"	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 (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	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\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f00d0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{FC2E391A-4286-4C02-90F2-0E7FC3EA7136}\WpadDecision = "0"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\b6-7c-36-87-bc-21	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\b6-7c-36-87-bc-21\WpadDecisionReason = "1"	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\ZoneMap\	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\Wpad\b6-7c-36-87-bc-21\WpadDecisionTime = 2093c52fa7bfda01	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\b6-7c-36-87-bc-21\WpadDecision = "0"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	mssecsvc.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 2228 wrote to memory of 2080	2228	rundll32.exe	rundll32.exe
PID 2228 wrote to memory of 2080	2228	rundll32.exe	rundll32.exe
PID 2228 wrote to memory of 2080	2228	rundll32.exe	rundll32.exe
PID 2228 wrote to memory of 2080	2228	rundll32.exe	rundll32.exe
PID 2228 wrote to memory of 2080	2228	rundll32.exe	rundll32.exe
PID 2228 wrote to memory of 2080	2228	rundll32.exe	rundll32.exe
PID 2228 wrote to memory of 2080	2228	rundll32.exe	rundll32.exe
PID 2080 wrote to memory of 2692	2080	rundll32.exe	mssecsvc.exe
PID 2080 wrote to memory of 2692	2080	rundll32.exe	mssecsvc.exe
PID 2080 wrote to memory of 2692	2080	rundll32.exe	mssecsvc.exe
PID 2080 wrote to memory of 2692	2080	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\b1c22e18d7e3f126ba7692efe3092ffa_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2228

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\b1c22e18d7e3f126ba7692efe3092ffa_JaffaCakes118.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:2080

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:2692

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:2708

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:2748

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
7f64fbc4ff36d8b483dee7393a75038f

SHA1
aaab184e716ef1e4e6307af3bf41de2933abee03

SHA256
56dd97957b6e2af0c5ae0f6766a6fa1eea221f86acd78af8e0948ce05324ee04

SHA512
5561982bdaa4075b9feabc1d8846392b315a26f1f4e2857bbd45ed4ec5f154672c6ee9a10e0205f767847d80b6105d67ab9d323f942d4416bcfe5e51800b30ed

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C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
7d127b5927509092c87db2a5d433de3c

SHA1
10ee49743677f8cf3120b7ff6423a6288f06b8ff

SHA256
cf57bdc54874f8541e54638f8c460b07fc48d8c79aef511c05260d77a5ec4bd9

SHA512
e86e510e88496475cd2f1db74146c1266f314625cb2909043f38fba2f1625b1d1a1127ca8dc4b27858dbd6403b149c5e16cf897c5ddda91dd347376613fa2b6a

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads