wannacry | ed8166cb4c5022f9a30b525dfae81e41603a3652aef284cc517db4a4f2f0be55

General

Target

291b2abda8c73f13da640d00262f2fca_JaffaCakes118.dll
Size

5.0MB
MD5

291b2abda8c73f13da640d00262f2fca
SHA1

2518149785ebac21a3412477ad8b7b77a71fd0f8
SHA256

ed8166cb4c5022f9a30b525dfae81e41603a3652aef284cc517db4a4f2f0be55
SHA512

63810124f4950c1f2ebba2fb1cb3d583c329a8e00a023aae97f00edf9c7785650c63eb6247b91ab87fabe7ebe1343b625071b8c78bbd483e94347a6973d51c85
SSDEEP

49152:SnAQqMSPbcBVQej/1INRx+TSqTdX1HkQo6SclAH:+DqPoBhz1aRxcSUDk36Sc2H

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3247) 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

2224 mssecsvc.exe
2616 mssecsvc.exe
2480 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
2224	mssecsvc.exe
2616	mssecsvc.exe
2480	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\Wpad\{94ABF82B-B9EB-4DA9-BD02-A10312DA8EE7}\8e-44-fa-05-dd-51	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
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\UNCAsIntranet = "0"	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\{94ABF82B-B9EB-4DA9-BD02-A10312DA8EE7}	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{94ABF82B-B9EB-4DA9-BD02-A10312DA8EE7}\WpadDecisionTime = 20b8207beaa1da01	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\8e-44-fa-05-dd-51\WpadDecisionReason = "1"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\8e-44-fa-05-dd-51\WpadDecisionTime = 20b8207beaa1da01	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\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	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\{94ABF82B-B9EB-4DA9-BD02-A10312DA8EE7}\WpadDecisionReason = "1"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{94ABF82B-B9EB-4DA9-BD02-A10312DA8EE7}\WpadDecision = "0"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\8e-44-fa-05-dd-51	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	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	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\ZoneMap\AutoDetect = "1"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f0076000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{94ABF82B-B9EB-4DA9-BD02-A10312DA8EE7}\WpadNetworkName = "Network 3"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\8e-44-fa-05-dd-51\WpadDecision = "0"	mssecsvc.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 2896 wrote to memory of 1516	2896	rundll32.exe	rundll32.exe
PID 2896 wrote to memory of 1516	2896	rundll32.exe	rundll32.exe
PID 2896 wrote to memory of 1516	2896	rundll32.exe	rundll32.exe
PID 2896 wrote to memory of 1516	2896	rundll32.exe	rundll32.exe
PID 2896 wrote to memory of 1516	2896	rundll32.exe	rundll32.exe
PID 2896 wrote to memory of 1516	2896	rundll32.exe	rundll32.exe
PID 2896 wrote to memory of 1516	2896	rundll32.exe	rundll32.exe
PID 1516 wrote to memory of 2224	1516	rundll32.exe	mssecsvc.exe
PID 1516 wrote to memory of 2224	1516	rundll32.exe	mssecsvc.exe
PID 1516 wrote to memory of 2224	1516	rundll32.exe	mssecsvc.exe
PID 1516 wrote to memory of 2224	1516	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\291b2abda8c73f13da640d00262f2fca_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2896

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\291b2abda8c73f13da640d00262f2fca_JaffaCakes118.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:1516

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:2224

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:2480

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:2616

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
269e76ed7d050cfea0251ab041ac130b

SHA1
e7840e904b23df38dea2c2a8da6b2c7eba3219c0

SHA256
6e1f6280498db231815b22bc54285e757c4046dda79df23b5840441b10e07db0

SHA512
fc8c1b60d20e802219b68f42a98e82a030935fdd98615a3da5c030b649007c540acf168f98e5f15d6b24d5a51c6db3359d894b1197f0438cb825cf7070078970

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

MD5
38aea02f42bca897b5385cc55473c0ce

SHA1
8eac1c148346d802996de5491738061feb4b0e98

SHA256
263f99f6e8ffd8ca232132fd57bc2a8c00b2165df96471f72197544d326ff207

SHA512
9de6275b7887d98af5e374633c11814cd4e6687161d97ae42ce1c30e1235b34fe0cc5484ac2396af469bdfdb5e80c03d8952447ea4fce07e503fb3cab57809a8

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads