wannacry | d139899bbf14f9de9233100c96283d93d97c974c6e87c6f2cda85f71dae41445

General

Target

2eed58838ca173ec3db6ba7aea01bc3e_JaffaCakes118.dll
Size

5.0MB
MD5

2eed58838ca173ec3db6ba7aea01bc3e
SHA1

d47b8b5444a9a324361badb6a16b181bbc5a9817
SHA256

d139899bbf14f9de9233100c96283d93d97c974c6e87c6f2cda85f71dae41445
SHA512

9ceb6019d4ecc6c2f64f7b16fc27f1b2c257a210d47160eb885900d6dcc8829540f9b7687ba2993b47388cf1900faf139f8ea0c715643bde659baa1b0c5f2711
SSDEEP

98304:+DqPoBItcSUDk36SAEdhvxWa9P593R8yAVp2:+DqPptcxk3ZAEUadzR8yc4

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3221) 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

2084 mssecsvc.exe
2932 mssecsvc.exe
2700 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
2084	mssecsvc.exe
2932	mssecsvc.exe
2700	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\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f0082000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{1B996771-5930-4F54-A2CB-E36C83FC5941}\WpadDecisionReason = "1"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\12-bf-17-be-4f-1f	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\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	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	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{1B996771-5930-4F54-A2CB-E36C83FC5941}\12-bf-17-be-4f-1f	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\12-bf-17-be-4f-1f\WpadDecisionReason = "1"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\12-bf-17-be-4f-1f\WpadDecisionTime = c0dedbb9cea2da01	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\Wpad\{1B996771-5930-4F54-A2CB-E36C83FC5941}\WpadDecision = "0"	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 (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
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{1B996771-5930-4F54-A2CB-E36C83FC5941}\WpadDecisionTime = c0dedbb9cea2da01	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\12-bf-17-be-4f-1f\WpadDecision = "0"	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\ZoneMap\AutoDetect = "1"	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\{1B996771-5930-4F54-A2CB-E36C83FC5941}	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{1B996771-5930-4F54-A2CB-E36C83FC5941}\WpadNetworkName = "Network 3"	mssecsvc.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 2804 wrote to memory of 2036	2804	rundll32.exe	rundll32.exe
PID 2804 wrote to memory of 2036	2804	rundll32.exe	rundll32.exe
PID 2804 wrote to memory of 2036	2804	rundll32.exe	rundll32.exe
PID 2804 wrote to memory of 2036	2804	rundll32.exe	rundll32.exe
PID 2804 wrote to memory of 2036	2804	rundll32.exe	rundll32.exe
PID 2804 wrote to memory of 2036	2804	rundll32.exe	rundll32.exe
PID 2804 wrote to memory of 2036	2804	rundll32.exe	rundll32.exe
PID 2036 wrote to memory of 2084	2036	rundll32.exe	mssecsvc.exe
PID 2036 wrote to memory of 2084	2036	rundll32.exe	mssecsvc.exe
PID 2036 wrote to memory of 2084	2036	rundll32.exe	mssecsvc.exe
PID 2036 wrote to memory of 2084	2036	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\2eed58838ca173ec3db6ba7aea01bc3e_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2804

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\2eed58838ca173ec3db6ba7aea01bc3e_JaffaCakes118.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:2036

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:2084

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:2700

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:2932

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
67c5e6cb5e44c79f60617741bf3c21f8

SHA1
5f9ccf6b1767d5618b981e4a5bd9a9d55a87b8e6

SHA256
5a69a5fc95a4d643f935b16ee26c4e84d7c91c8120b0f50460ce95f46daaa0f9

SHA512
57af93864b4715faf26114f66f66b2b7afcd511eb8d61f661cf4a708aea116b8dfc1aa5f64d0b5e7e2f6706d0197580122a24b81a13e55522c4a0e4ad8d7e013

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

MD5
43ba539881d9807f5f5307be46970dd3

SHA1
1d8b300291796f96f1557325fa75109bfdd6628e

SHA256
70a1d71f66c97323beb5b566ddc7ae8227a01d8e93eace79b1bc0219b850dfba

SHA512
5b649f1a83f45c3ab5ebc29ba98b23410ba9f70d38473886ae2bc3ace77295eba8c83a3383dc5789f6fee21d6076d2cdccea2eb8dda0d973dba8d8761e23afc0

Download Submit

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads