wannacry | a2a8729f73ab7fef657cd15316818606548f802903589df70dafd405f15d7b5e

General

Target

92a5bf01f9a7c4558ac9b24cfa85f29c_JaffaCakes118.dll
Size

5.0MB
MD5

92a5bf01f9a7c4558ac9b24cfa85f29c
SHA1

d516f680006e70f80b5674f93d63ae1b80e6e6f5
SHA256

a2a8729f73ab7fef657cd15316818606548f802903589df70dafd405f15d7b5e
SHA512

c05b2e68debf06f531f3889904a982a6dc29c39a2223cb83a45597597220a1f7a07d4d464e9f0e0995d87c3c7e4c3760e515f84cb4af425e6b928c504af18921
SSDEEP

49152:znAQqMSPbcBVQej/1INRx+TSqTdX1HkQo4R8:TDqPoBhz1aRxcSUDk34R8

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3158) 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

2032 mssecsvc.exe
2628 mssecsvc.exe
2624 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
2032	mssecsvc.exe
2628	mssecsvc.exe
2624	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\Cookies\CachePrefix = "Cookie:"	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\{4F2FB857-DF5B-42AC-9ECD-434BB9D75853}	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{4F2FB857-DF5B-42AC-9ECD-434BB9D75853}\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\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\8e-65-03-b4-91-1c\WpadDecisionTime = f06c649cddb5da01	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{4F2FB857-DF5B-42AC-9ECD-434BB9D75853}\WpadDecisionTime = f06c649cddb5da01	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\8e-65-03-b4-91-1c	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
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	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 = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f009b000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{4F2FB857-DF5B-42AC-9ECD-434BB9D75853}\WpadDecisionReason = "1"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\8e-65-03-b4-91-1c\WpadDecisionReason = "1"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\8e-65-03-b4-91-1c\WpadDecision = "0"	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
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\Wpad\{4F2FB857-DF5B-42AC-9ECD-434BB9D75853}\WpadNetworkName = "Network 3"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{4F2FB857-DF5B-42AC-9ECD-434BB9D75853}\8e-65-03-b4-91-1c	mssecsvc.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 2116 wrote to memory of 2192	2116	rundll32.exe	rundll32.exe
PID 2116 wrote to memory of 2192	2116	rundll32.exe	rundll32.exe
PID 2116 wrote to memory of 2192	2116	rundll32.exe	rundll32.exe
PID 2116 wrote to memory of 2192	2116	rundll32.exe	rundll32.exe
PID 2116 wrote to memory of 2192	2116	rundll32.exe	rundll32.exe
PID 2116 wrote to memory of 2192	2116	rundll32.exe	rundll32.exe
PID 2116 wrote to memory of 2192	2116	rundll32.exe	rundll32.exe
PID 2192 wrote to memory of 2032	2192	rundll32.exe	mssecsvc.exe
PID 2192 wrote to memory of 2032	2192	rundll32.exe	mssecsvc.exe
PID 2192 wrote to memory of 2032	2192	rundll32.exe	mssecsvc.exe
PID 2192 wrote to memory of 2032	2192	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\92a5bf01f9a7c4558ac9b24cfa85f29c_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2116

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\92a5bf01f9a7c4558ac9b24cfa85f29c_JaffaCakes118.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:2192

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:2032

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:2624

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:2628

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
39defd2d02a0e1d9e961738e65c02696

SHA1
b1e9e93ce978ed77952a13248ecaf10e147f4f77

SHA256
2fb740f05a5efa0e1d4449456a96e81d4818f812ae06d6ce58e6fb83b1aaa26f

SHA512
fe955354b4bf51731306299f6f00e7d6f385acd8189e5e2103d8bd1e2ba4e8ac6a03845bcf8c33793cc5e752afe5d539037ca19746376a2d1b8002a4a414d254

Download Submit
C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
09df6f00ae6b3e8d064f249aa0927967

SHA1
c90a841db653b784e2165e05816ecdde78b7ecf2

SHA256
5fe3d02dcde78bd9aa552217ebfdb6c386ef1342d004b920dded41773878269c

SHA512
1a224329ac8682e6e1a5aa432742e8095a9ead4e89f1e6b54001807ac2543656920bfae8fa592f0bd2fdbf1c8290f4d07458c42234e755d94703f69121dd9476

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads