wannacry | 01e0a9e78f32164f518ac8195f1f59012e2e9c7050181506ca594546b4be3fa1

General

Target

7399cd7ebd2ed59f60e672b59fe24b1e_JaffaCakes118.dll
Size

5.0MB
MD5

7399cd7ebd2ed59f60e672b59fe24b1e
SHA1

2d0c72260f7ddd8834b297b3924ec0c840fd0893
SHA256

01e0a9e78f32164f518ac8195f1f59012e2e9c7050181506ca594546b4be3fa1
SHA512

7056b42887555fd92322f2f4b9e48dcbe60205247d28c639bc1c6491c6b181b982d1e4e17f1971a587ed2850fd3293785eab5e2f02d37e6a3f118cf3b9315e47
SSDEEP

98304:TDqPoBhz1aRxcSUDk36SAEdhvxWa9P59:TDqPe1Cxcxk3ZAEUad

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3325) 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

1812 mssecsvc.exe
2260 mssecsvc.exe
2672 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
1812	mssecsvc.exe
2260	mssecsvc.exe
2672	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
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\Wpad\{6B858B10-E090-44C0-8173-6A979A1DA93F}\WpadDecisionTime = 10180402fbaeda01	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\5a-24-0f-a9-df-c2	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\5a-24-0f-a9-df-c2\WpadDecision = "0"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	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\History\CachePrefix = "Visited:"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\5a-24-0f-a9-df-c2\WpadDecisionReason = "1"	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	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\AutoDetect = "1"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{6B858B10-E090-44C0-8173-6A979A1DA93F}\WpadDecision = "0"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{6B858B10-E090-44C0-8173-6A979A1DA93F}\5a-24-0f-a9-df-c2	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\5a-24-0f-a9-df-c2\WpadDecisionTime = 10180402fbaeda01	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\Cookies\CachePrefix = "Cookie:"	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\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f003f000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{6B858B10-E090-44C0-8173-6A979A1DA93F}	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{6B858B10-E090-44C0-8173-6A979A1DA93F}\WpadDecisionReason = "1"	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{6B858B10-E090-44C0-8173-6A979A1DA93F}\WpadNetworkName = "Network 3"	mssecsvc.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 2168 wrote to memory of 2044	2168	rundll32.exe	rundll32.exe
PID 2168 wrote to memory of 2044	2168	rundll32.exe	rundll32.exe
PID 2168 wrote to memory of 2044	2168	rundll32.exe	rundll32.exe
PID 2168 wrote to memory of 2044	2168	rundll32.exe	rundll32.exe
PID 2168 wrote to memory of 2044	2168	rundll32.exe	rundll32.exe
PID 2168 wrote to memory of 2044	2168	rundll32.exe	rundll32.exe
PID 2168 wrote to memory of 2044	2168	rundll32.exe	rundll32.exe
PID 2044 wrote to memory of 1812	2044	rundll32.exe	mssecsvc.exe
PID 2044 wrote to memory of 1812	2044	rundll32.exe	mssecsvc.exe
PID 2044 wrote to memory of 1812	2044	rundll32.exe	mssecsvc.exe
PID 2044 wrote to memory of 1812	2044	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\7399cd7ebd2ed59f60e672b59fe24b1e_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2168

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\7399cd7ebd2ed59f60e672b59fe24b1e_JaffaCakes118.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:2044

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:1812

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:2672

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:2260

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Discovery

2

T1046

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

C:\Windows\mssecsvc.exe
Filesize
3.6MB

MD5
1b15e08a5a18357ba188888f53aeed01

SHA1
862514337374a54d26e86f1df39a0800c5cd84f6

SHA256
74313cfbc7ed6dd96a4e71257668cabc537081cea5291d71200b26b146e2c247

SHA512
ca413d0ed266ac3e5fc27020dd2a200549a101fe5f8cd937353bdf61775335865dd972a8932b2d5fc1f8dd3446d39b6551f17d33d96060a261908cad0505bafe

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C:\Windows\tasksche.exe
Filesize
3.4MB

MD5
491cbf257f5a5480598928b92700b29e

SHA1
1d6d79f23d2a3675cbb4b2202e819a7930494212

SHA256
bb8f6f081677fc409d2d8b4701f2567e61e5892f27fdd04bc0106cf44561d1c9

SHA512
fc516169f29c9aa21cc6e594afe29517c7de979feafa862b21609bf0b8ba549067605d915054e07616cc5e408f7d6193a16aca0fe047bf0f7f825b8fd1099642

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads