wannacry | ba8fa582a466530641805be5ac05e3a5a4e4fcc09cebc73a2cbd6dd3b7fcc33a

General

Target

NA_NA_1f449b5387d2deexeexe_JC.exe
Size

3.6MB
MD5

1f449b5387d2de73aeadcf0dd43b4b91
SHA1

d943c20f180064a0939fb947a3cc8cfb8207c1f9
SHA256

ba8fa582a466530641805be5ac05e3a5a4e4fcc09cebc73a2cbd6dd3b7fcc33a
SHA512

e7a81cc9269bb3145c404d153051f7ca439adb57225fa9cf26cadf613f39c8b5712e148c5727ef05f4f3b5f36cc7d30922f140925ef0ed7b3de5ee65b06d8987
SSDEEP

24576:2bLgddQhfdmMSirYbcMNgef0raut/8uME7A4kqAH1:2nAQqMSPbcBVrau3R8yAH1

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3313) 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

pid	Process
2224	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

Drops file in System32 directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\Temporary Internet Files\counters.dat	NA_NA_1f449b5387d2deexeexe_JC.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\WINDOWS\tasksche.exe	NA_NA_1f449b5387d2deexeexe_JC.exe

Modifies data under HKEY_USERS 24 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	NA_NA_1f449b5387d2deexeexe_JC.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0"	NA_NA_1f449b5387d2deexeexe_JC.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	NA_NA_1f449b5387d2deexeexe_JC.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{10659B51-165B-4FCF-8612-EDE25173C0F7}\0e-fc-0d-b3-9f-bd	NA_NA_1f449b5387d2deexeexe_JC.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\0e-fc-0d-b3-9f-bd	NA_NA_1f449b5387d2deexeexe_JC.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	NA_NA_1f449b5387d2deexeexe_JC.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0"	NA_NA_1f449b5387d2deexeexe_JC.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	NA_NA_1f449b5387d2deexeexe_JC.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f00f6000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	NA_NA_1f449b5387d2deexeexe_JC.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{10659B51-165B-4FCF-8612-EDE25173C0F7}	NA_NA_1f449b5387d2deexeexe_JC.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{10659B51-165B-4FCF-8612-EDE25173C0F7}\WpadDecisionReason = "1"	NA_NA_1f449b5387d2deexeexe_JC.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\0e-fc-0d-b3-9f-bd\WpadDecision = "0"	NA_NA_1f449b5387d2deexeexe_JC.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	NA_NA_1f449b5387d2deexeexe_JC.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	NA_NA_1f449b5387d2deexeexe_JC.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	NA_NA_1f449b5387d2deexeexe_JC.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{10659B51-165B-4FCF-8612-EDE25173C0F7}\WpadDecisionTime = e09339bc8ebdd901	NA_NA_1f449b5387d2deexeexe_JC.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{10659B51-165B-4FCF-8612-EDE25173C0F7}\WpadNetworkName = "Network 3"	NA_NA_1f449b5387d2deexeexe_JC.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\0e-fc-0d-b3-9f-bd\WpadDecisionTime = e09339bc8ebdd901	NA_NA_1f449b5387d2deexeexe_JC.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	NA_NA_1f449b5387d2deexeexe_JC.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	NA_NA_1f449b5387d2deexeexe_JC.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1"	NA_NA_1f449b5387d2deexeexe_JC.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	NA_NA_1f449b5387d2deexeexe_JC.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{10659B51-165B-4FCF-8612-EDE25173C0F7}\WpadDecision = "0"	NA_NA_1f449b5387d2deexeexe_JC.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\0e-fc-0d-b3-9f-bd\WpadDecisionReason = "1"	NA_NA_1f449b5387d2deexeexe_JC.exe

C:\Users\Admin\AppData\Local\Temp\NA_NA_1f449b5387d2deexeexe_JC.exe
"C:\Users\Admin\AppData\Local\Temp\NA_NA_1f449b5387d2deexeexe_JC.exe"
1⤵
- Drops file in Windows directory
PID:2012
- C:\WINDOWS\tasksche.exe
  C:\WINDOWS\tasksche.exe /i
  2⤵
  - Executes dropped EXE
  PID:2224

C:\Users\Admin\AppData\Local\Temp\NA_NA_1f449b5387d2deexeexe_JC.exe
C:\Users\Admin\AppData\Local\Temp\NA_NA_1f449b5387d2deexeexe_JC.exe -m security
1⤵
- Drops file in System32 directory
- Modifies data under HKEY_USERS
PID:2260

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\tasksche.exe

Filesize
3.4MB

MD5
03a61cac0f58e145cf5ed919ceeb0c71

SHA1
a358e747c5cab9416b4506eafe7a48ab9628b679

SHA256
917cfab3032f94762c5c9d96a92739736336f1337dfce6c2176f72df580f902e

SHA512
6226c1dc143a020a59ac966da0e24d0d152bb2833d46462359a5530181b52070a097f6bf5ef7e8d5f57030bdddb1a3359ebe4d682c5275c7d6bfa87d37669a6b

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