wannacry | ac088736ba7f0d75716c75bd861d2f0738c9889f04a48db792c0308f5fd71a97

General

Target

b92837157d74c9c290e6ef61c6df12c1_JaffaCakes118.dll
Size

5.0MB
MD5

b92837157d74c9c290e6ef61c6df12c1
SHA1

446d39ebc62a01152634976966bfbbd12665a603
SHA256

ac088736ba7f0d75716c75bd861d2f0738c9889f04a48db792c0308f5fd71a97
SHA512

cdffff863d33fc21bc19b487f0b51ff3edd7720785dc01c64d60436a04c31ae559a3ae1fc361d462c3a6dcf15469a88a122b67445b5d92db8f37491c83459d82
SSDEEP

24576:SbLgddQhfdmMSirYbcMNgef0QeQjG/D8kIqRYo:SnAQqMSPbcBVQej/1

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (2664) 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

1184 mssecsvc.exe
2656 mssecsvc.exe
2492 tasksche.exe

pid	process
1184	mssecsvc.exe
2656	mssecsvc.exe
2492	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\{F316CF33-43A0-4FC4-B521-DA0727DCE3A0}\WpadDecision = "0"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\32-eb-7e-10-10-1b\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
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
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f002e000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{F316CF33-43A0-4FC4-B521-DA0727DCE3A0}\WpadDecisionTime = 205d9d61dcc0da01	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\Cookies\CachePrefix = "Cookie:"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\32-eb-7e-10-10-1b	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{F316CF33-43A0-4FC4-B521-DA0727DCE3A0}\WpadNetworkName = "Network 3"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\32-eb-7e-10-10-1b\WpadDecisionReason = "1"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{F316CF33-43A0-4FC4-B521-DA0727DCE3A0}\WpadDecisionReason = "1"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{F316CF33-43A0-4FC4-B521-DA0727DCE3A0}\32-eb-7e-10-10-1b	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 (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\History\CachePrefix = "Visited:"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{F316CF33-43A0-4FC4-B521-DA0727DCE3A0}	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\32-eb-7e-10-10-1b\WpadDecisionTime = 205d9d61dcc0da01	mssecsvc.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 1632 wrote to memory of 2404	1632	rundll32.exe	rundll32.exe
PID 1632 wrote to memory of 2404	1632	rundll32.exe	rundll32.exe
PID 1632 wrote to memory of 2404	1632	rundll32.exe	rundll32.exe
PID 1632 wrote to memory of 2404	1632	rundll32.exe	rundll32.exe
PID 1632 wrote to memory of 2404	1632	rundll32.exe	rundll32.exe
PID 1632 wrote to memory of 2404	1632	rundll32.exe	rundll32.exe
PID 1632 wrote to memory of 2404	1632	rundll32.exe	rundll32.exe
PID 2404 wrote to memory of 1184	2404	rundll32.exe	mssecsvc.exe
PID 2404 wrote to memory of 1184	2404	rundll32.exe	mssecsvc.exe
PID 2404 wrote to memory of 1184	2404	rundll32.exe	mssecsvc.exe
PID 2404 wrote to memory of 1184	2404	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\b92837157d74c9c290e6ef61c6df12c1_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1632

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\b92837157d74c9c290e6ef61c6df12c1_JaffaCakes118.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:2404

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:1184

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:2492

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:2656

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Discovery

1

T1046

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\mssecsvc.exe

Filesize
3.6MB

MD5
57058c59faa467bb3711e17bc9833955

SHA1
3e2a3c4eb0734423c4b4370a14fffb5c36d15db5

SHA256
fa7659048adbff8dba41368ebb3942bef8b117f24c37f282cd1c20e46c71694f

SHA512
c0c0c1b5b410b24d2bb1badd64b6ea2e1aa92bd829c967485425bed915e38304fe0d6527489f5c10c50c0054aa8f4c6b115d5fdb9c36e4da06e5788eae55321f

Download Submit
C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
1cc8d08ba91ea363f5a4d9ab3e56a0c6

SHA1
19063ed2ef149e4af440bfecbbf71c34e341c8e2

SHA256
316a63b3960a4f7183b535de13e64b5aa556ebbd6f5009faaca4a540dc2da452

SHA512
6be035dd7d22ea5e55f2bf3a19478196ea8e9296800b15324d87035f460a850e4ed4fec5dc6e33ca93148f2f12d09f51af203fb085b3db87155b3c753ce91855

Download Submit

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads