wannacry | 69cf10f44f26135d7144419d57632d4d37d7a3e0e83c0ffbbeb326f1bf72566a

General

Target

bc4bfce53fe8ed95f14980900a2e10a7_JaffaCakes118.dll
Size

5.0MB
MD5

bc4bfce53fe8ed95f14980900a2e10a7
SHA1

e13ea4fad6cc988e0acd58fa252efd4f80b58bb6
SHA256

69cf10f44f26135d7144419d57632d4d37d7a3e0e83c0ffbbeb326f1bf72566a
SHA512

aebeca254bfa808f0c704ce30b20769926d224acfddfbe31056d7fe8a87325b7edf851612dc46dd74a8e1f3662dab72e2353976e26a20b377128b7596eed0709
SSDEEP

49152:SnAQqMSPbcBVPINRx+TSqTdX1HkQo6SAARdhnYAMEcaEau3R8:+DqPoBRaRxcSUDk36SAEdhY593R8

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3264) 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

2248 mssecsvc.exe
2624 mssecsvc.exe
2080 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
2248	mssecsvc.exe
2624	mssecsvc.exe
2080	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\Wpad\{0CEEBF1F-2565-4A2C-82D1-C630D0E51D7F}\5e-6d-4b-d7-b9-1b	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\5e-6d-4b-d7-b9-1b\WpadDecisionTime = 2084362387c1da01	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
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{0CEEBF1F-2565-4A2C-82D1-C630D0E51D7F}\WpadDecisionReason = "1"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{0CEEBF1F-2565-4A2C-82D1-C630D0E51D7F}\WpadDecision = "0"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\5e-6d-4b-d7-b9-1b\WpadDecisionReason = "1"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\5e-6d-4b-d7-b9-1b\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\ProxyEnable = "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\History\CachePrefix = "Visited:"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{0CEEBF1F-2565-4A2C-82D1-C630D0E51D7F}\WpadDecisionTime = 2084362387c1da01	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{0CEEBF1F-2565-4A2C-82D1-C630D0E51D7F}\WpadNetworkName = "Network 3"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\5e-6d-4b-d7-b9-1b	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\AutoDetect = "1"	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 = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f0043000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{0CEEBF1F-2565-4A2C-82D1-C630D0E51D7F}	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
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	mssecsvc.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 2044 wrote to memory of 2352	2044	rundll32.exe	rundll32.exe
PID 2044 wrote to memory of 2352	2044	rundll32.exe	rundll32.exe
PID 2044 wrote to memory of 2352	2044	rundll32.exe	rundll32.exe
PID 2044 wrote to memory of 2352	2044	rundll32.exe	rundll32.exe
PID 2044 wrote to memory of 2352	2044	rundll32.exe	rundll32.exe
PID 2044 wrote to memory of 2352	2044	rundll32.exe	rundll32.exe
PID 2044 wrote to memory of 2352	2044	rundll32.exe	rundll32.exe
PID 2352 wrote to memory of 2248	2352	rundll32.exe	mssecsvc.exe
PID 2352 wrote to memory of 2248	2352	rundll32.exe	mssecsvc.exe
PID 2352 wrote to memory of 2248	2352	rundll32.exe	mssecsvc.exe
PID 2352 wrote to memory of 2248	2352	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\bc4bfce53fe8ed95f14980900a2e10a7_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2044

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\bc4bfce53fe8ed95f14980900a2e10a7_JaffaCakes118.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:2352

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:2248

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:2080

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:2624

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
f64cbe11d633698becdc5f826539a435

SHA1
fe15810da36ab893a8143679b926fa133d46c544

SHA256
2e45d0c449ec4725b73d3d5c01f6f007f7096b595b405c97a29a35af793c7d48

SHA512
660385bd5178de96bbc1e8145ef23c9c298e44e10449be0aaf19ef376b54eb7dd88c86f51404378312def9219cdc8fa6cee78eda2eb8b993d1292c4cb1751a53

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C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
d8e75ea050d6499df6597b517eb19d93

SHA1
3187e3a6067629fe1806e28a93573d35e54fba53

SHA256
c80b4721d1e73fea041144ff3909b57822258dd244ea037b66962bddcb04f74b

SHA512
87e3f09167178a4218d95651949e3c2628772ac1ae84ff23a139841652656bb8d2c2869b297e90ba1ad2ee96449629790a0bcc5959bd76e4ea4075fdb52f2ccc

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads