wannacry | 137251c25b626ae3a3649672a1f905987ec2b1f8d66b5d9dea23b2edcadbf47c

General

Target

82fd46a243395db2c649f0910620a3c4_JaffaCakes118.dll
Size

5.0MB
MD5

82fd46a243395db2c649f0910620a3c4
SHA1

3095460c31ebebb3983faebf7c2294d580d15df9
SHA256

137251c25b626ae3a3649672a1f905987ec2b1f8d66b5d9dea23b2edcadbf47c
SHA512

174358adf448f07e73258ecad84a7e4cb44ed304b96cb04a2c14b5129a7b10769b5fcb094dfb18ecd69a2a54d22b67db892c4399c677647e263be4274919132b
SSDEEP

98304:+DqPoBcRk36SAEdhvxWa9P593R8yAVp2H:+DqPXk3ZAEUadzR8yc4H

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3142) 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

2556 mssecsvc.exe
2576 mssecsvc.exe
2092 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
2556	mssecsvc.exe
2576	mssecsvc.exe
2092	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\SavedLegacySettings = 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\Content\CachePrefix	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\{3990B50C-23EA-4448-BFB6-92786D94E491}	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{3990B50C-23EA-4448-BFB6-92786D94E491}\WpadDecisionTime = 50a2322347b2da01	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{3990B50C-23EA-4448-BFB6-92786D94E491}\WpadNetworkName = "Network 3"	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\Wpad\{3990B50C-23EA-4448-BFB6-92786D94E491}\5e-0f-78-aa-ca-14	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\5e-0f-78-aa-ca-14	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{3990B50C-23EA-4448-BFB6-92786D94E491}\WpadDecisionReason = "1"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\5e-0f-78-aa-ca-14\WpadDecisionReason = "1"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\5e-0f-78-aa-ca-14\WpadDecisionTime = 50a2322347b2da01	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\DefaultConnectionSettings = 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\{3990B50C-23EA-4448-BFB6-92786D94E491}\WpadDecision = "0"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\5e-0f-78-aa-ca-14\WpadDecision = "0"	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
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	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f012e000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	mssecsvc.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 3036 wrote to memory of 2892	3036	rundll32.exe	rundll32.exe
PID 3036 wrote to memory of 2892	3036	rundll32.exe	rundll32.exe
PID 3036 wrote to memory of 2892	3036	rundll32.exe	rundll32.exe
PID 3036 wrote to memory of 2892	3036	rundll32.exe	rundll32.exe
PID 3036 wrote to memory of 2892	3036	rundll32.exe	rundll32.exe
PID 3036 wrote to memory of 2892	3036	rundll32.exe	rundll32.exe
PID 3036 wrote to memory of 2892	3036	rundll32.exe	rundll32.exe
PID 2892 wrote to memory of 2556	2892	rundll32.exe	mssecsvc.exe
PID 2892 wrote to memory of 2556	2892	rundll32.exe	mssecsvc.exe
PID 2892 wrote to memory of 2556	2892	rundll32.exe	mssecsvc.exe
PID 2892 wrote to memory of 2556	2892	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\82fd46a243395db2c649f0910620a3c4_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3036

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\82fd46a243395db2c649f0910620a3c4_JaffaCakes118.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:2892

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:2556

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:2092

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:2576

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
8321179d52afbcc23eefa2e025d4d431

SHA1
668f5e160ba6240debdeb67754a5f18feb98de0b

SHA256
38eaf4b1f5be922bf99080de35a224a8fbc3ab67db379f9448c1f6942c238331

SHA512
fde59b4660f40d53bf9d4476dffea3a785db2332bfbf8d46fb356a52be223ea868bce1dbff6ef6e725220fbf54738e70eb441ce7aa7fe3f8f70f0fecc6f33e65

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

MD5
0f252d2596916dc0ef4c722552dcf45c

SHA1
a28d6fe48b379dd729dd1502b869988c6187a2ed

SHA256
e0e8db7298d1653a7dd800ca2c2c361d5b26cc6d163f47502d3f33659d699e3f

SHA512
0f5caa70a6054a72ab7e85f987ea96fe96d7800a6ddd1977b27995454d5b3cc23de1949d753a0fa884d222ebf36854bcf1fe7eead409df03825c472e641489dd

Download Submit

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads