wannacry | 2fce6704bfd3e8ec31fdf5ff69088c5f5b994330d296c6a30c01ec7204cf1c90

General

Target

2024091889620df172874d59012e08b143bdc33cwannacry.exe
Size

2.2MB
MD5

89620df172874d59012e08b143bdc33c
SHA1

23df51e1c98ed0b1c0b850b71eb765adc8f30c25
SHA256

2fce6704bfd3e8ec31fdf5ff69088c5f5b994330d296c6a30c01ec7204cf1c90
SHA512

53e19f05c4a59c81335e4455b1328814e0b9f1591774d0f0cc2b844a1ea85e1fda3eccdd98733e1f3bd1842a94e391842317f5cc67357f69c2a79fe7a8e72962
SSDEEP

49152:QnpEhPbcBVQej/1INRx+TSqTdX1HkQo6SAARdAqGi:QpOoBhz1aRxcSUDk36SAEdAHi

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3236) 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
2792	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 5 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\Temporary Internet Files\counters.dat	2024091889620df172874d59012e08b143bdc33cwannacry.exe
File created	C:\Windows\SysWOW64\config\systemprofile\AppData\Roaming\Microsoft\Windows\Cookies\65YLNF0R.txt	2024091889620df172874d59012e08b143bdc33cwannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Roaming\Microsoft\Windows\Cookies\65YLNF0R.txt	2024091889620df172874d59012e08b143bdc33cwannacry.exe
File created	C:\Windows\SysWOW64\config\systemprofile\AppData\Roaming\Microsoft\Windows\Cookies\SLNFFTE4.txt	2024091889620df172874d59012e08b143bdc33cwannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Roaming\Microsoft\Windows\Cookies\SLNFFTE4.txt	2024091889620df172874d59012e08b143bdc33cwannacry.exe

Drops file in Windows directory 3 IoCs

description	ioc	Process
File created	C:\WINDOWS\tasksche.exe	2024091889620df172874d59012e08b143bdc33cwannacry.exe
File created	C:\Windows\__tmp_rar_sfx_access_check_259451690	tasksche.exe
File created	C:\Windows\eee.exe	tasksche.exe

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	tasksche.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024091889620df172874d59012e08b143bdc33cwannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024091889620df172874d59012e08b143bdc33cwannacry.exe

Modifies data under HKEY_USERS 24 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	2024091889620df172874d59012e08b143bdc33cwannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{AE813C31-9BB2-49C9-9D74-E676ADBD632A}\WpadDecisionReason = "1"	2024091889620df172874d59012e08b143bdc33cwannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{AE813C31-9BB2-49C9-9D74-E676ADBD632A}\WpadDecision = "0"	2024091889620df172874d59012e08b143bdc33cwannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\76-41-32-b8-e1-7f\WpadDecisionReason = "1"	2024091889620df172874d59012e08b143bdc33cwannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	2024091889620df172874d59012e08b143bdc33cwannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2024091889620df172874d59012e08b143bdc33cwannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0"	2024091889620df172874d59012e08b143bdc33cwannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1"	2024091889620df172874d59012e08b143bdc33cwannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\76-41-32-b8-e1-7f\WpadDecisionTime = 505edd50bf09db01	2024091889620df172874d59012e08b143bdc33cwannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{AE813C31-9BB2-49C9-9D74-E676ADBD632A}	2024091889620df172874d59012e08b143bdc33cwannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\76-41-32-b8-e1-7f	2024091889620df172874d59012e08b143bdc33cwannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\76-41-32-b8-e1-7f\WpadDecision = "0"	2024091889620df172874d59012e08b143bdc33cwannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	2024091889620df172874d59012e08b143bdc33cwannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	2024091889620df172874d59012e08b143bdc33cwannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0"	2024091889620df172874d59012e08b143bdc33cwannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f00e8000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2024091889620df172874d59012e08b143bdc33cwannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{AE813C31-9BB2-49C9-9D74-E676ADBD632A}\WpadNetworkName = "Network 3"	2024091889620df172874d59012e08b143bdc33cwannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2024091889620df172874d59012e08b143bdc33cwannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	2024091889620df172874d59012e08b143bdc33cwannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	2024091889620df172874d59012e08b143bdc33cwannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	2024091889620df172874d59012e08b143bdc33cwannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	2024091889620df172874d59012e08b143bdc33cwannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{AE813C31-9BB2-49C9-9D74-E676ADBD632A}\WpadDecisionTime = 505edd50bf09db01	2024091889620df172874d59012e08b143bdc33cwannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{AE813C31-9BB2-49C9-9D74-E676ADBD632A}\76-41-32-b8-e1-7f	2024091889620df172874d59012e08b143bdc33cwannacry.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2792	tasksche.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1916 wrote to memory of 2792	1916	2024091889620df172874d59012e08b143bdc33cwannacry.exe	32
PID 1916 wrote to memory of 2792	1916	2024091889620df172874d59012e08b143bdc33cwannacry.exe	32
PID 1916 wrote to memory of 2792	1916	2024091889620df172874d59012e08b143bdc33cwannacry.exe	32
PID 1916 wrote to memory of 2792	1916	2024091889620df172874d59012e08b143bdc33cwannacry.exe	32
PID 1916 wrote to memory of 2792	1916	2024091889620df172874d59012e08b143bdc33cwannacry.exe	32
PID 1916 wrote to memory of 2792	1916	2024091889620df172874d59012e08b143bdc33cwannacry.exe	32
PID 1916 wrote to memory of 2792	1916	2024091889620df172874d59012e08b143bdc33cwannacry.exe	32

C:\Users\Admin\AppData\Local\Temp\2024091889620df172874d59012e08b143bdc33cwannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2024091889620df172874d59012e08b143bdc33cwannacry.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1916
- C:\WINDOWS\tasksche.exe
  C:\WINDOWS\tasksche.exe /i
  2⤵
  - Executes dropped EXE
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: GetForegroundWindowSpam
  PID:2792

C:\Users\Admin\AppData\Local\Temp\2024091889620df172874d59012e08b143bdc33cwannacry.exe
C:\Users\Admin\AppData\Local\Temp\2024091889620df172874d59012e08b143bdc33cwannacry.exe -m security
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
PID:2840

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

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\WINDOWS\tasksche.exe

Filesize
2.0MB

MD5
55b334556f965ba7818da82affd63c6c

SHA1
cb766269d33789feb7c21e1abfe2b523a9b001cd

SHA256
44da49471483fd0b8d18d2ec2a6c1ec2ab107a0fd4c0da92d4083616972692aa

SHA512
2ab57be84c6d994041a74082451b265caab4738c670fbd43ee0fd1caacbb9f356e3fca9f1b2ea5056934333e9635c6a14ccce3bcd11bf6b896091cd55b47bbd3

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