wannacry | ea90471e9d4dbae983656969be57fc3ecbc6f68bff93888f5e712644be95b69f

General

Target

51aab375aea5501d903d3a80d3f1dbbf_JaffaCakes118.dll
Size

5.0MB
MD5

51aab375aea5501d903d3a80d3f1dbbf
SHA1

62429059285483ef1140d06914e528bf704e4577
SHA256

ea90471e9d4dbae983656969be57fc3ecbc6f68bff93888f5e712644be95b69f
SHA512

c6d988e43db3c17f0a53b0247c8aa087b6c1defb29560302116569d1c0aee976e0852b3d3aef37da06c199d150dce3d62a3631d85e1a88a8b737388ef494486d
SSDEEP

98304:TDqPoBhz1aRxcSUDk36SAEdhvxWa9P59Bc/J:TDqPe1Cxcxk3ZAEUadAJ

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3235) 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

2148 mssecsvc.exe
2296 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
2148	mssecsvc.exe
2296	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 (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1"	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\{11E9293E-A4D7-48DC-B5DE-6E9D8FF017F5}	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\82-f6-bf-44-47-65\WpadDecision = "0"	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
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 (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{11E9293E-A4D7-48DC-B5DE-6E9D8FF017F5}\WpadNetworkName = "Network 3"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{11E9293E-A4D7-48DC-B5DE-6E9D8FF017F5}\82-f6-bf-44-47-65	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\Cookies\CachePrefix = "Cookie:"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{11E9293E-A4D7-48DC-B5DE-6E9D8FF017F5}\WpadDecisionReason = "1"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{11E9293E-A4D7-48DC-B5DE-6E9D8FF017F5}\WpadDecision = "0"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\82-f6-bf-44-47-65\WpadDecisionTime = 10c701fda4a8da01	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
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\82-f6-bf-44-47-65\WpadDecisionReason = "1"	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f003c000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{11E9293E-A4D7-48DC-B5DE-6E9D8FF017F5}\WpadDecisionTime = 10c701fda4a8da01	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\82-f6-bf-44-47-65	mssecsvc.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 2104 wrote to memory of 2792	2104	rundll32.exe	rundll32.exe
PID 2104 wrote to memory of 2792	2104	rundll32.exe	rundll32.exe
PID 2104 wrote to memory of 2792	2104	rundll32.exe	rundll32.exe
PID 2104 wrote to memory of 2792	2104	rundll32.exe	rundll32.exe
PID 2104 wrote to memory of 2792	2104	rundll32.exe	rundll32.exe
PID 2104 wrote to memory of 2792	2104	rundll32.exe	rundll32.exe
PID 2104 wrote to memory of 2792	2104	rundll32.exe	rundll32.exe
PID 2792 wrote to memory of 2148	2792	rundll32.exe	mssecsvc.exe
PID 2792 wrote to memory of 2148	2792	rundll32.exe	mssecsvc.exe
PID 2792 wrote to memory of 2148	2792	rundll32.exe	mssecsvc.exe
PID 2792 wrote to memory of 2148	2792	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\51aab375aea5501d903d3a80d3f1dbbf_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2104

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\51aab375aea5501d903d3a80d3f1dbbf_JaffaCakes118.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:2792

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:2148

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:2296

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
fd57cd67ca6943cf19388c74caaf8ec1

SHA1
141f26f0dcb0071ecded6fd3ec1d09b3d0f7fd46

SHA256
d6767479d1b2b1908de550a7b45c93a8405b28700cda845f3248200310bc0585

SHA512
755379c67d685fc5aac89444f779fb9f397802d619e1a6d4388be78760dea54f33c29076876fee7d32fb3ecb9e6bb88093eaae246103b43320c90ec825bfe5e7

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

MD5
4a5ffc4ccab9af3e5654f447bcb1f85d

SHA1
6b5b5bafbff65372e102ab1c06cbf1f09d47cf84

SHA256
aac6b9f1b96c9d7c14cbb9600f00e4dcbb4f257772fb7b4eed4e0fa4c724286d

SHA512
5f0699c6cc8f1a5fdc11e2aa1f0f574cdfe05daaf5d5f7b959c595d0b48e2f34fc9a5cd755b296963a09b0dd7e3cedddf733e21b8abdfee06ca0ecf501c6df0c

Download Submit

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads