wannacry | 7793ec935f7744363e2da33df49dbb9e9e71b35003f5a6eedec1c2b0007bb296

General

Target

8932eb4a6adcb1f00e3ed8fe72af3324_JaffaCakes118.dll
Size

5.0MB
MD5

8932eb4a6adcb1f00e3ed8fe72af3324
SHA1

fe5c9cb3740d6ed10381a2cb1f6132a740059a94
SHA256

7793ec935f7744363e2da33df49dbb9e9e71b35003f5a6eedec1c2b0007bb296
SHA512

68d3f10e8f73f3d1de04693da8bdfa1db703e7c139b256c4a7af883873be7c44f0d1447ec8ef8d1b14c362d988a095751bd72067608593193ded80889d35178d
SSDEEP

98304:+DqPoBhz1aRxcSUDk36SAEdhvxWa9P593R:+DqPe1Cxcxk3ZAEUadzR

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3306) 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

2228 mssecsvc.exe
1984 mssecsvc.exe
2648 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
2228	mssecsvc.exe
1984	mssecsvc.exe
2648	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\Wpad\{974DB7FB-DEA0-4725-ABFC-DE14367C97F5}\WpadNetworkName = "Network 3"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{974DB7FB-DEA0-4725-ABFC-DE14367C97F5}\86-17-ac-eb-a0-1b	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
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 = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f00f1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{974DB7FB-DEA0-4725-ABFC-DE14367C97F5}\WpadDecisionTime = d02df07ed0b3da01	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{974DB7FB-DEA0-4725-ABFC-DE14367C97F5}\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\ZoneMap\	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\Wpad\86-17-ac-eb-a0-1b	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\UNCAsIntranet = "0"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\86-17-ac-eb-a0-1b\WpadDecisionReason = "1"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\86-17-ac-eb-a0-1b\WpadDecision = "0"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	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\AutoDetect = "1"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{974DB7FB-DEA0-4725-ABFC-DE14367C97F5}	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{974DB7FB-DEA0-4725-ABFC-DE14367C97F5}\WpadDecisionReason = "1"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\86-17-ac-eb-a0-1b\WpadDecisionTime = d02df07ed0b3da01	mssecsvc.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 1724 wrote to memory of 2216	1724	rundll32.exe	rundll32.exe
PID 1724 wrote to memory of 2216	1724	rundll32.exe	rundll32.exe
PID 1724 wrote to memory of 2216	1724	rundll32.exe	rundll32.exe
PID 1724 wrote to memory of 2216	1724	rundll32.exe	rundll32.exe
PID 1724 wrote to memory of 2216	1724	rundll32.exe	rundll32.exe
PID 1724 wrote to memory of 2216	1724	rundll32.exe	rundll32.exe
PID 1724 wrote to memory of 2216	1724	rundll32.exe	rundll32.exe
PID 2216 wrote to memory of 2228	2216	rundll32.exe	mssecsvc.exe
PID 2216 wrote to memory of 2228	2216	rundll32.exe	mssecsvc.exe
PID 2216 wrote to memory of 2228	2216	rundll32.exe	mssecsvc.exe
PID 2216 wrote to memory of 2228	2216	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\8932eb4a6adcb1f00e3ed8fe72af3324_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1724

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\8932eb4a6adcb1f00e3ed8fe72af3324_JaffaCakes118.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:2216

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:2228

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:2648

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:1984

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
60098f96f13ec5cec860d8c64b207788

SHA1
935cfbc9d6bb786fd9302d4f40030ced98430a0f

SHA256
23a8a51c01969975d4745a39d4788b9ed04d46bc18787d9273dfbd3f97608826

SHA512
bd8d27acacddbe0c24a4d61673128c2d78c5c3aaf013cc560105a277ea1414a7bc8fa651ac81b88910604ad2e0eb0f184163aaf68d20c53f38b662dcb0eab393

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

MD5
c91f708b05cc06b554f544205943ca39

SHA1
ec2bc4509e57213d1ae68889b0a4db06035eb1fb

SHA256
97cc09ddf777eed3e868ff151e3191fd5439179e44b24cf14b72bb7c54c31b82

SHA512
676ec83f97e50ef633bef575f210a5328b4f7a7e203c53674dd761afa48efcdc9fe4aa5cd56e4cf3fadab3147266807553f38a875e7c6ecfe27fbbf3715a5d20

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads