wannacry | dc7562128af66de7bd5e4bd3cfeb198143937a4ef1c8b76e3d74decb170a1178

General

Target

baabc02f2fd929bdcb8aaee84c822cd4_JaffaCakes118.dll
Size

5.0MB
MD5

baabc02f2fd929bdcb8aaee84c822cd4
SHA1

ab1632d15e7118932bd6e63cd6b79ebc58726c84
SHA256

dc7562128af66de7bd5e4bd3cfeb198143937a4ef1c8b76e3d74decb170a1178
SHA512

e2d998c82c26c2f12ab778f3692c1c0e55ca5dd29d4b929441fee17e04d11b518fef66f0811d7503a7f82c92c73a38854e3d5c4c25a167ed5d25d2e7c84181ab
SSDEEP

98304:+DqPoBhXaRxcSUDk36SAEdhvxWa9P593R8yAVp2H:+DqP8Cxcxk3ZAEUadzR8yc4H

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3297) 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

1844 mssecsvc.exe
2592 mssecsvc.exe
2452 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
1844	mssecsvc.exe
2592	mssecsvc.exe
2452	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\ZoneMap\	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\{A01742AB-C193-40E0-8E18-E8FFABDC3C98}	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\2a-a4-8d-e0-8f-8d	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\{A01742AB-C193-40E0-8E18-E8FFABDC3C98}\WpadDecisionReason = "1"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\2a-a4-8d-e0-8f-8d\WpadDecisionReason = "1"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\2a-a4-8d-e0-8f-8d\WpadDecision = "0"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	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\{A01742AB-C193-40E0-8E18-E8FFABDC3C98}\WpadDecisionTime = 302a305857c1da01	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{A01742AB-C193-40E0-8E18-E8FFABDC3C98}\WpadDecision = "0"	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{A01742AB-C193-40E0-8E18-E8FFABDC3C98}\WpadNetworkName = "Network 3"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\2a-a4-8d-e0-8f-8d\WpadDecisionTime = 302a305857c1da01	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\AutoDetect = "1"	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 = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f0027000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{A01742AB-C193-40E0-8E18-E8FFABDC3C98}\2a-a4-8d-e0-8f-8d	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 2176 wrote to memory of 1308	2176	rundll32.exe	rundll32.exe
PID 2176 wrote to memory of 1308	2176	rundll32.exe	rundll32.exe
PID 2176 wrote to memory of 1308	2176	rundll32.exe	rundll32.exe
PID 2176 wrote to memory of 1308	2176	rundll32.exe	rundll32.exe
PID 2176 wrote to memory of 1308	2176	rundll32.exe	rundll32.exe
PID 2176 wrote to memory of 1308	2176	rundll32.exe	rundll32.exe
PID 2176 wrote to memory of 1308	2176	rundll32.exe	rundll32.exe
PID 1308 wrote to memory of 1844	1308	rundll32.exe	mssecsvc.exe
PID 1308 wrote to memory of 1844	1308	rundll32.exe	mssecsvc.exe
PID 1308 wrote to memory of 1844	1308	rundll32.exe	mssecsvc.exe
PID 1308 wrote to memory of 1844	1308	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\baabc02f2fd929bdcb8aaee84c822cd4_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2176

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\baabc02f2fd929bdcb8aaee84c822cd4_JaffaCakes118.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:1308

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:1844

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:2452

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:2592

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
883b81298a9c0b8d16567e6f4175884a

SHA1
239594832b1e73da20ab9faf43c01219fdb503ab

SHA256
0f4c1d1e98d575f8dc4d0477483ff1113a2efceb9bf30c617268d4fb8908e62d

SHA512
8ce0393d5db8379af681aa710b1fe236d5a4a425063f480b6ed9a76b73e552cfb9d5246fd088bf34742ae22aeae311b324259b7947cfda76cce3fd10d9c99513

Download Submit
C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
c185fd4b16f26f93140b1082cf215fc5

SHA1
56d964f8719709ad65a9521f7ac8c20b91a6d4ce

SHA256
c2e3d88dbccd991ea64ca62715f933a146ece9dff94a0f361484d2c404c4548f

SHA512
3092435053b07490ad517080a550c02cca7e87e5ee3faed8455a5bb83bf2519fbb0ff5ca16301655be0ed1073226419064539e382621647fb77c4a5b6b1e8723

Download Submit

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads