wannacry | 355b6070cd2a0b31c9b42b62c14b8b6dc4ee857152a1e1b501b6cbda73e9a0b6

General

Target

4aae8d3248aae366d8668eefc8e4ecbb_JaffaCakes118.dll
Size

5.0MB
MD5

4aae8d3248aae366d8668eefc8e4ecbb
SHA1

4488bcf800d2e04e4ca388df134868e38c1a6fd6
SHA256

355b6070cd2a0b31c9b42b62c14b8b6dc4ee857152a1e1b501b6cbda73e9a0b6
SHA512

2256097b284f4a328a617131bb2a43b82064b735c3f2efb5c2b2f7b1f98728f9030c9d7e6e243e41722deee99dbe7b8cc942816ef69eee3d747a708be4010805
SSDEEP

24576:SbLgddQhfdmMSirYbcMNgef0q1LJMfcH9PO6LLuYAMEcpcL7:SnAQqMSPbcBVqxJM0H9PAMEc

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3223) 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

3036 mssecsvc.exe
2672 mssecsvc.exe
2712 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
3036	mssecsvc.exe
2672	mssecsvc.exe
2712	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 (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{DF0CEC56-E98F-44C4-995D-69849CDD7EE8}\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
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\Content\CachePrefix	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 = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f0090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\fa-c9-7a-3d-a3-5a	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\fa-c9-7a-3d-a3-5a\WpadDecisionReason = "1"	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\ProxyEnable = "0"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\fa-c9-7a-3d-a3-5a\WpadDecisionTime = 103e51047ea7da01	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{DF0CEC56-E98F-44C4-995D-69849CDD7EE8}	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
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\{DF0CEC56-E98F-44C4-995D-69849CDD7EE8}\WpadDecisionTime = 103e51047ea7da01	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{DF0CEC56-E98F-44C4-995D-69849CDD7EE8}\WpadDecision = "0"	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{DF0CEC56-E98F-44C4-995D-69849CDD7EE8}\WpadNetworkName = "Network 3"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{DF0CEC56-E98F-44C4-995D-69849CDD7EE8}\fa-c9-7a-3d-a3-5a	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\fa-c9-7a-3d-a3-5a\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

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 2208 wrote to memory of 1280	2208	rundll32.exe	rundll32.exe
PID 2208 wrote to memory of 1280	2208	rundll32.exe	rundll32.exe
PID 2208 wrote to memory of 1280	2208	rundll32.exe	rundll32.exe
PID 2208 wrote to memory of 1280	2208	rundll32.exe	rundll32.exe
PID 2208 wrote to memory of 1280	2208	rundll32.exe	rundll32.exe
PID 2208 wrote to memory of 1280	2208	rundll32.exe	rundll32.exe
PID 2208 wrote to memory of 1280	2208	rundll32.exe	rundll32.exe
PID 1280 wrote to memory of 3036	1280	rundll32.exe	mssecsvc.exe
PID 1280 wrote to memory of 3036	1280	rundll32.exe	mssecsvc.exe
PID 1280 wrote to memory of 3036	1280	rundll32.exe	mssecsvc.exe
PID 1280 wrote to memory of 3036	1280	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\4aae8d3248aae366d8668eefc8e4ecbb_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2208

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\4aae8d3248aae366d8668eefc8e4ecbb_JaffaCakes118.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:1280

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:3036

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:2712

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:2672

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
a303d486ce83611c43af4d855ec57b2c

SHA1
20dfe2de8d0a96740fe254cbe13a22517c2c62a6

SHA256
ef5bb4a97017fefa400253ffd59d97ac696d5ca25a45542661d57a3fc2f6ddab

SHA512
5235609cd3791eb191bd4460ce78c69fbb4751c55bddac26d870eba91c0db2cb82a1c66035262bbce238aa6db6083c377b959a2432a9de81a024f2761f50d4b9

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

MD5
abcfd0c00b5ee280a6b3eea836a18236

SHA1
3bf894472fa97223d8b900093b9c39ba0d24eaae

SHA256
4c7ab12b933942b311a8ee1a394a844869c0e3297f8dd645a99fbd67efd30974

SHA512
478e9e39aa1bdf2d4f68a6af469d387348d05a0643b9d75ca8a39d6e7a29291c1e95d4a31fc38cec79d9c5b38666e4e0a9626745635886a4a80d5d4ab6a505d3

Download Submit

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads