wannacry | 671f4737d788a6a7b5fb7b2c04fd9e69473d8de8b9e1a2f2b2eeb75322cdfb57

General

Target

a6bb8f21546c00b09a06e3401f3ee8e7_JaffaCakes118.dll
Size

5.0MB
MD5

a6bb8f21546c00b09a06e3401f3ee8e7
SHA1

f12cb293494c713cd4224e2bf1db3b968288a20e
SHA256

671f4737d788a6a7b5fb7b2c04fd9e69473d8de8b9e1a2f2b2eeb75322cdfb57
SHA512

07bd5f4aa30c3d9ff45320626024a126742561ba630b2d2c69732acf1b5dbfc075f9baa643fc0bec15ccee28df0f5cc8e54f319dfcb741665b7fdcee94cf9b2e
SSDEEP

98304:+DqPoBhz1aRxcSUDk36SAEdhvxWa9P593R8:+DqPe1Cxcxk3ZAEUadzR8

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3166) 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

1700 mssecsvc.exe
2620 mssecsvc.exe
2728 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
1700	mssecsvc.exe
2620	mssecsvc.exe
2728	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
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{5EDDF476-43FB-43FA-9D71-9C1361D02203}	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{5EDDF476-43FB-43FA-9D71-9C1361D02203}\WpadDecisionReason = "1"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0"	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\6e-66-71-aa-0a-5d\WpadDecisionTime = 3031f984dbbdda01	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 (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\History\CachePrefix = "Visited:"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\6e-66-71-aa-0a-5d	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\6e-66-71-aa-0a-5d\WpadDecisionReason = "1"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\6e-66-71-aa-0a-5d\WpadDecision = "0"	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	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\ZoneMap\AutoDetect = "1"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f00c8000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{5EDDF476-43FB-43FA-9D71-9C1361D02203}\WpadDecisionTime = 3031f984dbbdda01	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{5EDDF476-43FB-43FA-9D71-9C1361D02203}\WpadDecision = "0"	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{5EDDF476-43FB-43FA-9D71-9C1361D02203}\WpadNetworkName = "Network 3"	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\Wpad\{5EDDF476-43FB-43FA-9D71-9C1361D02203}\6e-66-71-aa-0a-5d	mssecsvc.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 2176 wrote to memory of 2204	2176	rundll32.exe	rundll32.exe
PID 2176 wrote to memory of 2204	2176	rundll32.exe	rundll32.exe
PID 2176 wrote to memory of 2204	2176	rundll32.exe	rundll32.exe
PID 2176 wrote to memory of 2204	2176	rundll32.exe	rundll32.exe
PID 2176 wrote to memory of 2204	2176	rundll32.exe	rundll32.exe
PID 2176 wrote to memory of 2204	2176	rundll32.exe	rundll32.exe
PID 2176 wrote to memory of 2204	2176	rundll32.exe	rundll32.exe
PID 2204 wrote to memory of 1700	2204	rundll32.exe	mssecsvc.exe
PID 2204 wrote to memory of 1700	2204	rundll32.exe	mssecsvc.exe
PID 2204 wrote to memory of 1700	2204	rundll32.exe	mssecsvc.exe
PID 2204 wrote to memory of 1700	2204	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\a6bb8f21546c00b09a06e3401f3ee8e7_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2176

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\a6bb8f21546c00b09a06e3401f3ee8e7_JaffaCakes118.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:2204

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:1700

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:2728

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:2620

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Windows\mssecsvc.exe

Filesize
3.6MB

MD5
64db244c8798dca9f01eb9bf2af3d270

SHA1
ce2b6de66cf42ee926812dd5efbc9dd6ffdf39fa

SHA256
e516678b8a98552bdb62532737a087b7e92674358d9a0aa1d9d2e853ddc8879a

SHA512
138d9f46e844e162d4419ba75e7ebb5958c3e2e6175c2ffd33f8b094ce8816d223f8979f82952fb26b2981e10031d77a81567a9687a335500a90d400e3972a26

Download Submit
C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
70e3273a2cf7fa7da9831d3f9966b6d5

SHA1
46f15d6844d44571ddc32d14a1cd0b60e1c28a5c

SHA256
efc32ad7e0d5f9d866ff78689bdea877ca1746a756deb470c6d3258b64237a2b

SHA512
0de9f16e33d397b6a1809eed33c7dce3fb9098864bdff765c6278bd1456bc9f3eb6bd47684626f93357567c145f67c2981f8e99f73e0a8cb1caea4a4ca8d5979

Download Submit

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads