wannacry | 41d2c0c73ee48f44866b80d5066350414b8120e8a6fc339617fcb6d202294163

General

Target

8ea435211e07717c7859f4286eb4519b_JaffaCakes118.dll
Size

5.0MB
MD5

8ea435211e07717c7859f4286eb4519b
SHA1

e77f3687afe9f530b16615196dddeed67a2f504b
SHA256

41d2c0c73ee48f44866b80d5066350414b8120e8a6fc339617fcb6d202294163
SHA512

7a3ae4e6ae25f51873cbd99486b87e99f95456aecd1bf3b9bfac0d6f1ffae885893ac07f831b6538dac88b90eaa4b11947d6f2450267ef9691568746ac7a9fcb
SSDEEP

98304:TDqPoBtk36SAEdhvxWa9P593R8yAVp2H:TDqPck3ZAEUadzR8yc4H

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3104) 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

3064 mssecsvc.exe
2648 mssecsvc.exe
2644 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
3064	mssecsvc.exe
2648	mssecsvc.exe
2644	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 (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\22-00-ba-a0-30-b3\WpadDecisionTime = 5070438706b5da01	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 (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
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{21F9738D-D762-40DD-9DC7-403F81DEA17D}\WpadDecisionReason = "1"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{21F9738D-D762-40DD-9DC7-403F81DEA17D}\WpadDecision = "0"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{21F9738D-D762-40DD-9DC7-403F81DEA17D}\22-00-ba-a0-30-b3	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\22-00-ba-a0-30-b3\WpadDecision = "0"	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\{21F9738D-D762-40DD-9DC7-403F81DEA17D}	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{21F9738D-D762-40DD-9DC7-403F81DEA17D}\WpadDecisionTime = 5070438706b5da01	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\22-00-ba-a0-30-b3	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 (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\5.0\Cache\Content\CachePrefix	mssecsvc.exe
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\Wpad\{21F9738D-D762-40DD-9DC7-403F81DEA17D}\WpadNetworkName = "Network 3"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\22-00-ba-a0-30-b3\WpadDecisionReason = "1"	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\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f0071000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 2320 wrote to memory of 2640	2320	rundll32.exe	rundll32.exe
PID 2320 wrote to memory of 2640	2320	rundll32.exe	rundll32.exe
PID 2320 wrote to memory of 2640	2320	rundll32.exe	rundll32.exe
PID 2320 wrote to memory of 2640	2320	rundll32.exe	rundll32.exe
PID 2320 wrote to memory of 2640	2320	rundll32.exe	rundll32.exe
PID 2320 wrote to memory of 2640	2320	rundll32.exe	rundll32.exe
PID 2320 wrote to memory of 2640	2320	rundll32.exe	rundll32.exe
PID 2640 wrote to memory of 3064	2640	rundll32.exe	mssecsvc.exe
PID 2640 wrote to memory of 3064	2640	rundll32.exe	mssecsvc.exe
PID 2640 wrote to memory of 3064	2640	rundll32.exe	mssecsvc.exe
PID 2640 wrote to memory of 3064	2640	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\8ea435211e07717c7859f4286eb4519b_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2320

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\8ea435211e07717c7859f4286eb4519b_JaffaCakes118.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:2640

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:3064

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:2644

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:2648

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
27d702f71eca8cbb89cbf03dc00a6c03

SHA1
a13405a3b5d6a8b0262651097171c81b8e7bc549

SHA256
9aa2a79b40288178664d878d717df867a89e34ea7b02b06aed51b607aaa40a56

SHA512
4007b402b8cea54496ad876f9595af03a71450ecda09259fde8179ff513a311083789dacdab2c9b2f854d7fd6b999d931b41bd6814c36ded95a202fc8c5298bd

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

MD5
80722f97b01b733d3b80ba1585c85f22

SHA1
03acec22b7ac1b110248e2124818e98c2e6764a9

SHA256
ca9b73d4fe343bbc136159cd1f8d7655faa1ac48f35c4a71f396fe25339c3f67

SHA512
fe21dfa01a5e2cd3cb279016fcbcd1531c0d23e427cc91f1aa743ca2ad6c66ad456f9b7940a8075ebe561fe821c76f5b3917d738262cae9648b319768cfe222b

Download Submit

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads