wannacry | 157b189773dcbef9fe94e0e4c89dfcd3f0d0dc3072dea94d2e1c5c143434a97f

General

Target

4891a63c1b38c092c879c4a1772aa7b9_JaffaCakes118.dll
Size

5.0MB
MD5

4891a63c1b38c092c879c4a1772aa7b9
SHA1

8401413f0a1306a806d9951efcf534ac2b1809bc
SHA256

157b189773dcbef9fe94e0e4c89dfcd3f0d0dc3072dea94d2e1c5c143434a97f
SHA512

c91cc59c057cdc829e3c9ec56ac288b0dd18c87d91b93253bcd49f5fcab9c844060faa78d20b8e1f8da4579054e506ae11086c47f6f39bcc128511fbb477bbad
SSDEEP

98304:+DqPoBhz1aRxcSUDk36SAEdhkubyrn593R8yAVp2H:+DqPe1Cxcxk3ZAEouOrnzR8yc4H

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3199) 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

2916 mssecsvc.exe
2628 mssecsvc.exe
2540 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
2916	mssecsvc.exe
2628	mssecsvc.exe
2540	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	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f0135000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{BBF9F9FE-49E0-4160-9A78-3712D77077A9}\c2-1b-56-86-bd-31	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\c2-1b-56-86-bd-31\WpadDecisionReason = "1"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\c2-1b-56-86-bd-31\WpadDecisionTime = 703d095a20a7da01	mssecsvc.exe
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 (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	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\Wpad\{BBF9F9FE-49E0-4160-9A78-3712D77077A9}\WpadNetworkName = "Network 3"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\c2-1b-56-86-bd-31\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\UNCAsIntranet = "0"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{BBF9F9FE-49E0-4160-9A78-3712D77077A9}	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\History\CachePrefix = "Visited:"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{BBF9F9FE-49E0-4160-9A78-3712D77077A9}\WpadDecisionReason = "1"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{BBF9F9FE-49E0-4160-9A78-3712D77077A9}\WpadDecisionTime = 703d095a20a7da01	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{BBF9F9FE-49E0-4160-9A78-3712D77077A9}\WpadDecision = "0"	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 (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\Wpad\c2-1b-56-86-bd-31	mssecsvc.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 3056 wrote to memory of 1536	3056	rundll32.exe	rundll32.exe
PID 3056 wrote to memory of 1536	3056	rundll32.exe	rundll32.exe
PID 3056 wrote to memory of 1536	3056	rundll32.exe	rundll32.exe
PID 3056 wrote to memory of 1536	3056	rundll32.exe	rundll32.exe
PID 3056 wrote to memory of 1536	3056	rundll32.exe	rundll32.exe
PID 3056 wrote to memory of 1536	3056	rundll32.exe	rundll32.exe
PID 3056 wrote to memory of 1536	3056	rundll32.exe	rundll32.exe
PID 1536 wrote to memory of 2916	1536	rundll32.exe	mssecsvc.exe
PID 1536 wrote to memory of 2916	1536	rundll32.exe	mssecsvc.exe
PID 1536 wrote to memory of 2916	1536	rundll32.exe	mssecsvc.exe
PID 1536 wrote to memory of 2916	1536	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\4891a63c1b38c092c879c4a1772aa7b9_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3056

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\4891a63c1b38c092c879c4a1772aa7b9_JaffaCakes118.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:1536

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:2916

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:2540

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:2628

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
6f0c8c10d9fd1e6941913026548172ca

SHA1
3a30ee46d2cd41023260ab4ae21af7c4e4ceb751

SHA256
2058c26651f53ed44076cb9f7c19d5ff6760a72ddda5064fe9943b3231008fdd

SHA512
51209c11dce95c5fb7b547f89282218a4279b6775323f7a643a74ab0b93d9b6928c946992c41cd5435f6250382a1d17fcc37f1d7c8a7b3287999fb490d5b100d

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C:\Windows\tasksche.exe
Filesize
3.4MB

MD5
e394023ced4954f9721b71233ec0247b

SHA1
bf5f1af9a94d0109f080ab02111326754c23f1ba

SHA256
e4d9a39722ad9c203284f36edfd91f36d33d7fd695c68f63744fa73f3e6ca12d

SHA512
6ae78054e88d8e840b01e0c3a7ffec468564fb006c2923af11b2f1e4298ddaac8d9f90e372caa301cba714189174f189839462732a01f85e8fd33efac3b949a6

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads