wannacry | 0329156707492a0b250aeb47da6d3301b64ce5b9c3c4756db7c729715d8c2f87

General

Target

849fafc139d1c8b2c5a8e22f0cb05dc1_JaffaCakes118.dll
Size

5.0MB
MD5

849fafc139d1c8b2c5a8e22f0cb05dc1
SHA1

edc4da225d1890f951da0e458909d62240591020
SHA256

0329156707492a0b250aeb47da6d3301b64ce5b9c3c4756db7c729715d8c2f87
SHA512

6e392a7b7d6ccd2a95159d3370eeaf0209c410644e220e8bc6907f6eeea55fb3204aa0a5515413c95f6d3f25aaa2f7a08be405dcab03db703cc91d6134c1c64c
SSDEEP

49152:SnAQqMSPbcBVQej/1INRx+TSqTdOxJM0H9PAMEcaEau3R:+DqPoBhz1aRxcSUwxWa9P593R

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3289) 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

2960 mssecsvc.exe
2640 mssecsvc.exe
2568 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
2960	mssecsvc.exe
2640	mssecsvc.exe
2568	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 (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\History\CachePrefix = "Visited:"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f0026000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\52-a4-6c-d2-f4-72\WpadDecisionReason = "1"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\52-a4-6c-d2-f4-72\WpadDecisionTime = c0644fe4a4b2da01	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\52-a4-6c-d2-f4-72\WpadDecision = "0"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0"	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\{BBA010D1-6925-4011-A9BE-2F3BBC9AB011}	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{BBA010D1-6925-4011-A9BE-2F3BBC9AB011}\WpadNetworkName = "Network 3"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{BBA010D1-6925-4011-A9BE-2F3BBC9AB011}\52-a4-6c-d2-f4-72	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 (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{BBA010D1-6925-4011-A9BE-2F3BBC9AB011}\WpadDecisionTime = c0644fe4a4b2da01	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{BBA010D1-6925-4011-A9BE-2F3BBC9AB011}\WpadDecision = "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
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{BBA010D1-6925-4011-A9BE-2F3BBC9AB011}\WpadDecisionReason = "1"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\52-a4-6c-d2-f4-72	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
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

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 1616 wrote to memory of 2144	1616	rundll32.exe	rundll32.exe
PID 1616 wrote to memory of 2144	1616	rundll32.exe	rundll32.exe
PID 1616 wrote to memory of 2144	1616	rundll32.exe	rundll32.exe
PID 1616 wrote to memory of 2144	1616	rundll32.exe	rundll32.exe
PID 1616 wrote to memory of 2144	1616	rundll32.exe	rundll32.exe
PID 1616 wrote to memory of 2144	1616	rundll32.exe	rundll32.exe
PID 1616 wrote to memory of 2144	1616	rundll32.exe	rundll32.exe
PID 2144 wrote to memory of 2960	2144	rundll32.exe	mssecsvc.exe
PID 2144 wrote to memory of 2960	2144	rundll32.exe	mssecsvc.exe
PID 2144 wrote to memory of 2960	2144	rundll32.exe	mssecsvc.exe
PID 2144 wrote to memory of 2960	2144	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\849fafc139d1c8b2c5a8e22f0cb05dc1_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1616

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\849fafc139d1c8b2c5a8e22f0cb05dc1_JaffaCakes118.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:2144

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:2960

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:2568

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:2640

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
e0fd19ae1134a5e9e19d4607faec7b74

SHA1
598f50737d562974697edf0001efeed15764ddc8

SHA256
139d99e66250012da2e3f1a88919372f9bbe11a64a3c005142f1aaac24c458a4

SHA512
2737660e30cc7f634d6f6ac5f162a830b7de3174c7f09e4d7d360040ca00776fce81bc72db878f110adc9e19f839c140f4807256972cd792aa500d0e62c152d7

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

MD5
131ca8785de9fb9b53b3a1670eda7f11

SHA1
4b3007510849ed6ec02187511dc9fef5d7b64a1b

SHA256
9afb2653c3ec17136c26e894428c4cfe93af04241f28e49bb0029a0f3b2b4581

SHA512
99bd525cb1779348099caa188af0082e349811f327c730a709af3ace740d3fb9fc23096e7d47351f69f6f761cd400a3e43a5bb0dbe175cd759c44849930e7766

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads