wannacry | 880ad069bad63c6d65ec14d92cf84110a86922d19d1fda0c31585d06a0f65a7e

General

Target

abf032725f28af53d269fc015868a851_JaffaCakes118.dll
Size

5.0MB
MD5

abf032725f28af53d269fc015868a851
SHA1

48e4c783445841ff3e67b1ae000e37f32a8bb611
SHA256

880ad069bad63c6d65ec14d92cf84110a86922d19d1fda0c31585d06a0f65a7e
SHA512

a50763dde1bcc363d47821baf6e8b6b56aa306970d718a816fb046f84188938851e3f6667d56d5fac69f5f2b41867db47c3b1bc18bd5ca3896a56ee8b59e36cd
SSDEEP

98304:+DqPoBhz1aRxcSUDk36SAEdhvxWa9P5RmI3R8yAVp2H:+DqPe1Cxcxk3ZAEUadPR8yc4H

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3236) 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

2056 mssecsvc.exe
3044 mssecsvc.exe
2736 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
2056	mssecsvc.exe
3044	mssecsvc.exe
2736	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:

mssecsvc.exerundll32.exe

description ioc process

File created C:\WINDOWS\tasksche.exe mssecsvc.exe
File created C:\WINDOWS\mssecsvc.exe rundll32.exe

description	ioc	process
File created	C:\WINDOWS\tasksche.exe	mssecsvc.exe
File created	C:\WINDOWS\mssecsvc.exe	rundll32.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\Wpad\{000CDB81-6B7A-4701-A42A-CADE1503F99A}\WpadDecision = "0"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\86-79-66-c3-c8-b4	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\86-79-66-c3-c8-b4\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
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\{000CDB81-6B7A-4701-A42A-CADE1503F99A}	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\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\5.0\Cache\History\CachePrefix = "Visited:"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	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\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f004a000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{000CDB81-6B7A-4701-A42A-CADE1503F99A}\WpadDecisionTime = d08f9f9bb0beda01	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{000CDB81-6B7A-4701-A42A-CADE1503F99A}\86-79-66-c3-c8-b4	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\86-79-66-c3-c8-b4\WpadDecisionReason = "1"	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{000CDB81-6B7A-4701-A42A-CADE1503F99A}\WpadNetworkName = "Network 3"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\86-79-66-c3-c8-b4\WpadDecisionTime = d08f9f9bb0beda01	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	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{000CDB81-6B7A-4701-A42A-CADE1503F99A}\WpadDecisionReason = "1"	mssecsvc.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 2108 wrote to memory of 2060	2108	rundll32.exe	rundll32.exe
PID 2108 wrote to memory of 2060	2108	rundll32.exe	rundll32.exe
PID 2108 wrote to memory of 2060	2108	rundll32.exe	rundll32.exe
PID 2108 wrote to memory of 2060	2108	rundll32.exe	rundll32.exe
PID 2108 wrote to memory of 2060	2108	rundll32.exe	rundll32.exe
PID 2108 wrote to memory of 2060	2108	rundll32.exe	rundll32.exe
PID 2108 wrote to memory of 2060	2108	rundll32.exe	rundll32.exe
PID 2060 wrote to memory of 2056	2060	rundll32.exe	mssecsvc.exe
PID 2060 wrote to memory of 2056	2060	rundll32.exe	mssecsvc.exe
PID 2060 wrote to memory of 2056	2060	rundll32.exe	mssecsvc.exe
PID 2060 wrote to memory of 2056	2060	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\abf032725f28af53d269fc015868a851_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2108

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\abf032725f28af53d269fc015868a851_JaffaCakes118.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:2060

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:2056

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:2736

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:3044

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
b913771f5dc971501b8e10ff32e5f6eb

SHA1
968d79a771dc7ac3e96c27a7728039dc41b55b4a

SHA256
11b31780543201d8eb3a3540240842087b05aa85782a8fcbd921d882c5d1bc3a

SHA512
3a629c67d86dc8c26b73c85e1214aa7aad3d09257d84507c1ecd7d75cf9e4c2cb365d54db8a76ccaafa90513f5f4528f6eba7ffd467b265bc41fd041fdc4dfe4

Download Submit
C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
42c8c77f3c2fb50b6bfef06f45b666e4

SHA1
f849baf0a54d5612ed9d627965a25eb338cea1ae

SHA256
efb903786b443496b9e18384b657d7fdaae7afe92d276a834867bffd00c10f1a

SHA512
20635978a8f975a8e2ca80cf34a4d952944047b3e3d2deb07be39ceb22b7b8bacf9a58071283a933865707f77319412f3c79970232b11edf9531d18e1922521c

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads