wannacry | 285a80c30114cd0759ce092586eb9d3ac5ebdeb01e2bdc062a74b7c0a9a6c45a

General

Target

95b2c12e9afeaed5fbe056e49fc1eaaa_JaffaCakes118.dll
Size

5.0MB
MD5

95b2c12e9afeaed5fbe056e49fc1eaaa
SHA1

223e0d98f84870b2a7d925b62eba5dcc64da6c82
SHA256

285a80c30114cd0759ce092586eb9d3ac5ebdeb01e2bdc062a74b7c0a9a6c45a
SHA512

6404dca3869606d3f39a0997040320755094f4a6bc11c5d470cf444e3f3089037a8f89985788a68d39a52fa4aa7c6058b82618fc253604c1b585ffebfc8d00f5
SSDEEP

98304:+DqPoBhzBRxcSUDk36SAEdhvxWa9P593R8yAVp2H:+DqPefxcxk3ZAEUadzR8yc4H

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3088) 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

2460 mssecsvc.exe
2704 mssecsvc.exe
2772 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
2460	mssecsvc.exe
2704	mssecsvc.exe
2772	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	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	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\Content\CachePrefix	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f004c000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{EBEE84DB-45DF-4703-AD8D-AB510DA632D1}\WpadDecision = "0"	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{EBEE84DB-45DF-4703-AD8D-AB510DA632D1}\WpadNetworkName = "Network 3"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\96-d9-22-a3-59-52	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{EBEE84DB-45DF-4703-AD8D-AB510DA632D1}\96-d9-22-a3-59-52	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\96-d9-22-a3-59-52\WpadDecisionReason = "1"	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 (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{EBEE84DB-45DF-4703-AD8D-AB510DA632D1}	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{EBEE84DB-45DF-4703-AD8D-AB510DA632D1}\WpadDecisionTime = 40113249a5b6da01	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\96-d9-22-a3-59-52\WpadDecisionTime = 40113249a5b6da01	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\96-d9-22-a3-59-52\WpadDecision = "0"	mssecsvc.exe
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	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{EBEE84DB-45DF-4703-AD8D-AB510DA632D1}\WpadDecisionReason = "1"	mssecsvc.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 2268 wrote to memory of 804	2268	rundll32.exe	rundll32.exe
PID 2268 wrote to memory of 804	2268	rundll32.exe	rundll32.exe
PID 2268 wrote to memory of 804	2268	rundll32.exe	rundll32.exe
PID 2268 wrote to memory of 804	2268	rundll32.exe	rundll32.exe
PID 2268 wrote to memory of 804	2268	rundll32.exe	rundll32.exe
PID 2268 wrote to memory of 804	2268	rundll32.exe	rundll32.exe
PID 2268 wrote to memory of 804	2268	rundll32.exe	rundll32.exe
PID 804 wrote to memory of 2460	804	rundll32.exe	mssecsvc.exe
PID 804 wrote to memory of 2460	804	rundll32.exe	mssecsvc.exe
PID 804 wrote to memory of 2460	804	rundll32.exe	mssecsvc.exe
PID 804 wrote to memory of 2460	804	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\95b2c12e9afeaed5fbe056e49fc1eaaa_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2268

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\95b2c12e9afeaed5fbe056e49fc1eaaa_JaffaCakes118.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:804

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:2460

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:2772

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:2704

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
a2a3e10eb73eff854be52d6647698f70

SHA1
f1162eb2213ef084bbc0e75a68e4654f2a0efed5

SHA256
82d4d7a9a740f3c56c3c71d6d65af9ffe80a7f0839bba5af4d27135a8d3b6609

SHA512
63bfaea06170adc82919cc1be74254035b9dc317b3b8890a63a3622b533cbc8835bb3e0147748397da07cec657157f22b0a84ee676b80bad0d18232fbfe157bd

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C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
a21d2a470b89d4c1916edd49e615e941

SHA1
b31f148803f88330c870659a7b9a173aa422baae

SHA256
438603dde75732b4f81fc31bac2de414a8060601c34c517c5b99f3f180c989cc

SHA512
2a928d33eb8e6d4849234a3c6ba0b7a2f12cdedef39fdc26c98ac532772eaf4f2448571afd345d0780cc5a666b7e77cbb5872defe8b89a00c2fc9650158e719d

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads