wannacry | 43eb27f7b137b25f7b1811b954f7ce833c91eefa23351fe3fd41fd3add99b0a3

General

Target

22d9245eda05fe0b66df152ce8f79394_JaffaCakes118.exe
Size

3.6MB
MD5

22d9245eda05fe0b66df152ce8f79394
SHA1

e6e815cf76f34e3aeb00a99cdf15ab72e569cc5b
SHA256

43eb27f7b137b25f7b1811b954f7ce833c91eefa23351fe3fd41fd3add99b0a3
SHA512

28a6031c704d41a08591c63b6e6180f3e83a71778d7cfb964909bc53c33e68d561347c4a70c7dd07cb86c8a082425b1da5c25f29bbe7827a78c8543296eab143
SSDEEP

98304:yDqPoBhz1aRxcSUDk36SAEdhvxWa9P593R8yAVp:yDqPe1Cxcxk3ZAEUadzR8yc

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3203) 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 1 IoCs

Processes:

tasksche.exe

pid process

2804 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
2804	tasksche.exe

Drops file in System32 directory 1 IoCs

Processes:

22d9245eda05fe0b66df152ce8f79394_JaffaCakes118.exe

description	ioc	process
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\Temporary Internet Files\counters.dat	22d9245eda05fe0b66df152ce8f79394_JaffaCakes118.exe

Drops file in Windows directory 1 IoCs

Processes:

22d9245eda05fe0b66df152ce8f79394_JaffaCakes118.exe

description ioc process

File created C:\WINDOWS\tasksche.exe 22d9245eda05fe0b66df152ce8f79394_JaffaCakes118.exe

description	ioc	process
File created	C:\WINDOWS\tasksche.exe	22d9245eda05fe0b66df152ce8f79394_JaffaCakes118.exe

Modifies data under HKEY_USERS 24 IoCs

Processes:

22d9245eda05fe0b66df152ce8f79394_JaffaCakes118.exe

description	ioc	process
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\1a-41-d6-a8-a7-90\WpadDecisionTime = e0046b3cf1a0da01	22d9245eda05fe0b66df152ce8f79394_JaffaCakes118.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	22d9245eda05fe0b66df152ce8f79394_JaffaCakes118.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	22d9245eda05fe0b66df152ce8f79394_JaffaCakes118.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0"	22d9245eda05fe0b66df152ce8f79394_JaffaCakes118.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1"	22d9245eda05fe0b66df152ce8f79394_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	22d9245eda05fe0b66df152ce8f79394_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	22d9245eda05fe0b66df152ce8f79394_JaffaCakes118.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	22d9245eda05fe0b66df152ce8f79394_JaffaCakes118.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f0055000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	22d9245eda05fe0b66df152ce8f79394_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{4C637B36-3C85-4E9F-88E9-E15CCFA50D80}\WpadNetworkName = "Network 3"	22d9245eda05fe0b66df152ce8f79394_JaffaCakes118.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\1a-41-d6-a8-a7-90\WpadDecision = "0"	22d9245eda05fe0b66df152ce8f79394_JaffaCakes118.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	22d9245eda05fe0b66df152ce8f79394_JaffaCakes118.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	22d9245eda05fe0b66df152ce8f79394_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	22d9245eda05fe0b66df152ce8f79394_JaffaCakes118.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	22d9245eda05fe0b66df152ce8f79394_JaffaCakes118.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{4C637B36-3C85-4E9F-88E9-E15CCFA50D80}\WpadDecision = "0"	22d9245eda05fe0b66df152ce8f79394_JaffaCakes118.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\1a-41-d6-a8-a7-90	22d9245eda05fe0b66df152ce8f79394_JaffaCakes118.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\1a-41-d6-a8-a7-90\WpadDecisionReason = "1"	22d9245eda05fe0b66df152ce8f79394_JaffaCakes118.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	22d9245eda05fe0b66df152ce8f79394_JaffaCakes118.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0"	22d9245eda05fe0b66df152ce8f79394_JaffaCakes118.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{4C637B36-3C85-4E9F-88E9-E15CCFA50D80}	22d9245eda05fe0b66df152ce8f79394_JaffaCakes118.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{4C637B36-3C85-4E9F-88E9-E15CCFA50D80}\WpadDecisionReason = "1"	22d9245eda05fe0b66df152ce8f79394_JaffaCakes118.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{4C637B36-3C85-4E9F-88E9-E15CCFA50D80}\WpadDecisionTime = e0046b3cf1a0da01	22d9245eda05fe0b66df152ce8f79394_JaffaCakes118.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{4C637B36-3C85-4E9F-88E9-E15CCFA50D80}\1a-41-d6-a8-a7-90	22d9245eda05fe0b66df152ce8f79394_JaffaCakes118.exe

C:\Users\Admin\AppData\Local\Temp\22d9245eda05fe0b66df152ce8f79394_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\22d9245eda05fe0b66df152ce8f79394_JaffaCakes118.exe"
1⤵
- Drops file in Windows directory
PID:836

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
2⤵
- Executes dropped EXE
PID:2804

C:\Users\Admin\AppData\Local\Temp\22d9245eda05fe0b66df152ce8f79394_JaffaCakes118.exe
C:\Users\Admin\AppData\Local\Temp\22d9245eda05fe0b66df152ce8f79394_JaffaCakes118.exe -m security
1⤵
- Drops file in System32 directory
- Modifies data under HKEY_USERS
PID:1124

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

Replay Monitor

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Downloads

C:\Windows\tasksche.exe
Filesize
3.4MB

MD5
ef327dfc0dd7b5e69c713e9575bea55e

SHA1
668837e4a54de2d56981e5c19057240542eb9d37

SHA256
0759b316bd3e2257e84b5fec762e10957d20196b78b5ec3204311b5d64ea0702

SHA512
2591178a57e26f0a8c9149c08b3536a985d4d2a0bddd59780618401db3e358af33ff250dbaf355d0083f14f4951908793826d7d991ef6c9dba4c87d1720668b2

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