wannacry | 9f3494834656ca415f99b8ac867dba6107e39cd142a91b5fdf8d4bd152059df5

General

Target

08ef488d70154b41f307643313bebcea_JaffaCakes118.dll
Size

5.0MB
MD5

08ef488d70154b41f307643313bebcea
SHA1

1e1b7619b59017e6dab86084f7c28c4b0ce8352c
SHA256

9f3494834656ca415f99b8ac867dba6107e39cd142a91b5fdf8d4bd152059df5
SHA512

378b97074146fee34d9dad73bcc2284c8c3e3cc9faf140197533dbbfb444a721384cad2573aeaff46b583c0a11bf7f97be7f065051a6424bc5c2781e5f04717c
SSDEEP

24576:SbLgddQhfdmMSirYbcMNgef0c8uME7A4kqAH1pNZtA0p+9XEk:SnAQqMSPbcBV2R8yAH1plAH

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3270) 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

2052 mssecsvc.exe
2520 mssecsvc.exe
2700 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
2052	mssecsvc.exe
2520	mssecsvc.exe
2700	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	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	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
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	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\ZoneMap\	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\History\CachePrefix = "Visited:"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{1B996771-5930-4F54-A2CB-E36C83FC5941}\WpadDecision = "0"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{1B996771-5930-4F54-A2CB-E36C83FC5941}\12-bf-17-be-4f-1f	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\12-bf-17-be-4f-1f\WpadDecision = "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\AutoDetect = "1"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{1B996771-5930-4F54-A2CB-E36C83FC5941}	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{1B996771-5930-4F54-A2CB-E36C83FC5941}\WpadDecisionTime = 3043628baf9ada01	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\12-bf-17-be-4f-1f\WpadDecisionReason = "1"	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 = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f0082000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{1B996771-5930-4F54-A2CB-E36C83FC5941}\WpadDecisionReason = "1"	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{1B996771-5930-4F54-A2CB-E36C83FC5941}\WpadNetworkName = "Network 3"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\12-bf-17-be-4f-1f	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\12-bf-17-be-4f-1f\WpadDecisionTime = 3043628baf9ada01	mssecsvc.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 2812 wrote to memory of 2940	2812	rundll32.exe	rundll32.exe
PID 2812 wrote to memory of 2940	2812	rundll32.exe	rundll32.exe
PID 2812 wrote to memory of 2940	2812	rundll32.exe	rundll32.exe
PID 2812 wrote to memory of 2940	2812	rundll32.exe	rundll32.exe
PID 2812 wrote to memory of 2940	2812	rundll32.exe	rundll32.exe
PID 2812 wrote to memory of 2940	2812	rundll32.exe	rundll32.exe
PID 2812 wrote to memory of 2940	2812	rundll32.exe	rundll32.exe
PID 2940 wrote to memory of 2052	2940	rundll32.exe	mssecsvc.exe
PID 2940 wrote to memory of 2052	2940	rundll32.exe	mssecsvc.exe
PID 2940 wrote to memory of 2052	2940	rundll32.exe	mssecsvc.exe
PID 2940 wrote to memory of 2052	2940	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\08ef488d70154b41f307643313bebcea_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2812

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\08ef488d70154b41f307643313bebcea_JaffaCakes118.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:2940

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:2052

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:2700

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:2520

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
9ebb1d4e89cea7d04a2544c648e1badd

SHA1
03c99a98f20f8382b526a5d4ae4628e3289dab3d

SHA256
70a6ae798a17aa4e062c4c2689747bb03c6eed36fc4a7e42d5a603b5cbe4a559

SHA512
24633c7a307941d24bf2b49d06dac6ab2ae98f6f538a66a8b769d29686f27333cc728d5847a4ef24106be90fa91700b5cf6783c61f8098c854ebf1b7fac51b84

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C:\Windows\tasksche.exe
Filesize
3.4MB

MD5
d9110c391fbbf05e6c25e742453c37d0

SHA1
8775113e9fb0a0588278289878bd20b18e11f260

SHA256
bd97e1cc42782edfa32b75f4b1eda36975d05eb4fb40070b2322b625b20e3e05

SHA512
30dbb855dfc15fbb45b757b127a3153716b978eb3847c9d91177a3124951f52a56802df79a0e5656df57e090ecaabbef5d4b17e314a324928d3f02e51dc383b8

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads