wannacry | b69d82198abee2589bc919442b55e7598eb741d1b996020ce201433c49603e17

General

Target

aa4bd04759c4c86d3a37456a4c0d1aae_JaffaCakes118.dll
Size

5.0MB
MD5

aa4bd04759c4c86d3a37456a4c0d1aae
SHA1

0abb832130a314a9b17c6275dda8e02d254a9456
SHA256

b69d82198abee2589bc919442b55e7598eb741d1b996020ce201433c49603e17
SHA512

8134065407787073681906390da10c5b45aa8afd4839888583de4b45fff4a19ec9dc1b1f72d0b1683d1f4089f52272a5ceb14333cc6703a6cc80c18785737cfc
SSDEEP

98304:TDqPoBhz1aRxcSUDk36SAEdhvxWa9P5kF:TDqPe1Cxcxk3ZAEUada

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3297) 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

2908 mssecsvc.exe
2636 mssecsvc.exe
2736 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
2908	mssecsvc.exe
2636	mssecsvc.exe
2736	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\Content\CachePrefix	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	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{1FC05740-2770-4148-A07A-59F278D3E855}	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{1FC05740-2770-4148-A07A-59F278D3E855}\WpadDecisionTime = 00fe2c476bbeda01	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	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
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{1FC05740-2770-4148-A07A-59F278D3E855}\ee-dd-44-09-b4-19	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\ee-dd-44-09-b4-19\WpadDecisionReason = "1"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\ee-dd-44-09-b4-19\WpadDecision = "0"	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{1FC05740-2770-4148-A07A-59F278D3E855}\WpadDecision = "0"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\ee-dd-44-09-b4-19\WpadDecisionTime = 00fe2c476bbeda01	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
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f00f4000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\ee-dd-44-09-b4-19	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\Wpad\{1FC05740-2770-4148-A07A-59F278D3E855}\WpadDecisionReason = "1"	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{1FC05740-2770-4148-A07A-59F278D3E855}\WpadNetworkName = "Network 3"	mssecsvc.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 2968 wrote to memory of 2800	2968	rundll32.exe	rundll32.exe
PID 2968 wrote to memory of 2800	2968	rundll32.exe	rundll32.exe
PID 2968 wrote to memory of 2800	2968	rundll32.exe	rundll32.exe
PID 2968 wrote to memory of 2800	2968	rundll32.exe	rundll32.exe
PID 2968 wrote to memory of 2800	2968	rundll32.exe	rundll32.exe
PID 2968 wrote to memory of 2800	2968	rundll32.exe	rundll32.exe
PID 2968 wrote to memory of 2800	2968	rundll32.exe	rundll32.exe
PID 2800 wrote to memory of 2908	2800	rundll32.exe	mssecsvc.exe
PID 2800 wrote to memory of 2908	2800	rundll32.exe	mssecsvc.exe
PID 2800 wrote to memory of 2908	2800	rundll32.exe	mssecsvc.exe
PID 2800 wrote to memory of 2908	2800	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\aa4bd04759c4c86d3a37456a4c0d1aae_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2968

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\aa4bd04759c4c86d3a37456a4c0d1aae_JaffaCakes118.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:2800

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:2908

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:2736

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:2636

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
c32558b9e0da451b5e1f3c42ec95c77c

SHA1
0e6cfd4a08436fd9d7cfe434c179a67872627195

SHA256
3b34fd5f2a99632baeb9d5ca8f39cce78ad0211e77bd38368901db795ab16d39

SHA512
310aceeadb4694820f3c60c9c287e5ee92f3d813bf214f9abd11459fd1ac558183d3b67e313479f3175fbacdfff2ba411e2eb1956a529b6d8eb0b3e74156d6bb

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C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
9eb5cd883bd050ca2fd14493b70ccc95

SHA1
69d53fdaa5b012725d48f95d1e5f8b9188138ede

SHA256
af321e7a1780cb92bcc1bcf30206aba7ec981f676fa98f741587bead7f2ce922

SHA512
85e29c027e6ca318b32003be4bbd6bcb5f6fceaa947083de38e6ac79f92abdf8e92b959b33f89bbbfc9fa551bf7ec7057e2d1dfc551e219c6aebffcab287870b

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads