wannacry | 977fad24c7d68202a24c954e3389c504b34e312ed31e2e2a2985ef2009591b7d

General

Target

c3756f4b812538exeexeexeex.exe
Size

3.6MB
MD5

c3756f4b81253842599eb248560ec77c
SHA1

f1c3157677b0a8ffb74038a5e5b7f0dd6947d698
SHA256

977fad24c7d68202a24c954e3389c504b34e312ed31e2e2a2985ef2009591b7d
SHA512

723fade4b237d3ce5b93b7a1816b59ba1a13002070a51134252c8e3786dbf04e80def0948569920a0c6268392726aa7bef062196a5b3679c264d25b763fa2369
SSDEEP

49152:XnAQqMSPbcBVQej/1INRx+TSqTdX1HkQo6SAARdh:XDqPoBhz1aRxcSUDk36SAEdh

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (1554) amount of remote hosts 1 TTPs
This may indicate a network scan to discover remotely running services.
discovery

Network Service Scanning
T1046

Executes dropped EXE 1 IoCs

pid	Process
2360	tasksche.exe

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	c3756f4b812538exeexeexeex.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\WINDOWS\tasksche.exe	c3756f4b812538exeexeexeex.exe

Modifies data under HKEY_USERS 24 IoCs

description	ioc	Process
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\56-6e-72-ba-87-e8\WpadDecisionTime = 60aa86e036b3d901	c3756f4b812538exeexeexeex.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\56-6e-72-ba-87-e8\WpadDecision = "0"	c3756f4b812538exeexeexeex.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	c3756f4b812538exeexeexeex.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	c3756f4b812538exeexeexeex.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0"	c3756f4b812538exeexeexeex.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	c3756f4b812538exeexeexeex.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{5136AC90-D86C-4114-B6D9-9BFAAAF2F636}\WpadDecision = "0"	c3756f4b812538exeexeexeex.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\56-6e-72-ba-87-e8\WpadDecisionReason = "1"	c3756f4b812538exeexeexeex.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	c3756f4b812538exeexeexeex.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1"	c3756f4b812538exeexeexeex.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	c3756f4b812538exeexeexeex.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{5136AC90-D86C-4114-B6D9-9BFAAAF2F636}\WpadDecisionReason = "1"	c3756f4b812538exeexeexeex.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	c3756f4b812538exeexeexeex.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f009b000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	c3756f4b812538exeexeexeex.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{5136AC90-D86C-4114-B6D9-9BFAAAF2F636}\WpadNetworkName = "Network 3"	c3756f4b812538exeexeexeex.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\56-6e-72-ba-87-e8	c3756f4b812538exeexeexeex.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{5136AC90-D86C-4114-B6D9-9BFAAAF2F636}\WpadDecisionTime = 60aa86e036b3d901	c3756f4b812538exeexeexeex.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{5136AC90-D86C-4114-B6D9-9BFAAAF2F636}\56-6e-72-ba-87-e8	c3756f4b812538exeexeexeex.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0"	c3756f4b812538exeexeexeex.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	c3756f4b812538exeexeexeex.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	c3756f4b812538exeexeexeex.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	c3756f4b812538exeexeexeex.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	c3756f4b812538exeexeexeex.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{5136AC90-D86C-4114-B6D9-9BFAAAF2F636}	c3756f4b812538exeexeexeex.exe

C:\Users\Admin\AppData\Local\Temp\c3756f4b812538exeexeexeex.exe
"C:\Users\Admin\AppData\Local\Temp\c3756f4b812538exeexeexeex.exe"
1⤵
- Drops file in Windows directory
PID:2944
- C:\WINDOWS\tasksche.exe
  C:\WINDOWS\tasksche.exe /i
  2⤵
  - Executes dropped EXE
  PID:2360

C:\Users\Admin\AppData\Local\Temp\c3756f4b812538exeexeexeex.exe
C:\Users\Admin\AppData\Local\Temp\c3756f4b812538exeexeexeex.exe -m security
1⤵
- Drops file in System32 directory
- Modifies data under HKEY_USERS
PID:3040

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Scanning

1

T1046

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
5093f399f7c33ab2a13688e53be44bed

SHA1
09fda6fb7918035d0b8d9322039d9988439f38df

SHA256
750cc2e6c9760d82694cede336762bd858a5b4bce99cd5aa705d794ecbfa1c72

SHA512
82db8fb3ecc3961b1deb34256986aba90ed756f9bf3ce7392156f3d4b8751eb9dd2cb2e963d617fcc2dd2c0c83428262eb7e6392543799882915522981f499e0

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