wannacry | 7604ba0030ba7e8a38548bc08c0fe4ced9d5356763e7b67663ea76081546a229

General

Target

202409242f91a861102729d143efdf329a0810e2wannacry.exe
Size

5.0MB
MD5

2f91a861102729d143efdf329a0810e2
SHA1

90e591f0c9277ee15df4dac093eb1228f2278e74
SHA256

7604ba0030ba7e8a38548bc08c0fe4ced9d5356763e7b67663ea76081546a229
SHA512

21102ba2fe50eaf6e95b15abc022599090ffc9482113d97e838e4a3588e154c003082cd86a4b190d7ac4f8da41f6c17370925c814a380a544ae8d8d50f629be8
SSDEEP

98304:yDqPoBhz1aRxcSUDk36SAEdhvxWa9P593R8yAVp2:yDqPe1Cxcxk3ZAEUadzR8yc4

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3249) 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 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\Temporary Internet Files\counters.dat	202409242f91a861102729d143efdf329a0810e2wannacry.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\WINDOWS\tasksche.exe	202409242f91a861102729d143efdf329a0810e2wannacry.exe

System Location Discovery: System Language Discovery 1 TTPs 2 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	202409242f91a861102729d143efdf329a0810e2wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	202409242f91a861102729d143efdf329a0810e2wannacry.exe

Modifies data under HKEY_USERS 24 IoCs

description	ioc	Process
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0"	202409242f91a861102729d143efdf329a0810e2wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1"	202409242f91a861102729d143efdf329a0810e2wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	202409242f91a861102729d143efdf329a0810e2wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	202409242f91a861102729d143efdf329a0810e2wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f00ca000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	202409242f91a861102729d143efdf329a0810e2wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\02-f2-da-ea-75-8c\WpadDecisionReason = "1"	202409242f91a861102729d143efdf329a0810e2wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	202409242f91a861102729d143efdf329a0810e2wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	202409242f91a861102729d143efdf329a0810e2wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0"	202409242f91a861102729d143efdf329a0810e2wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	202409242f91a861102729d143efdf329a0810e2wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{8601E328-1EC7-4796-93FE-584D2E341690}	202409242f91a861102729d143efdf329a0810e2wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{8601E328-1EC7-4796-93FE-584D2E341690}\WpadDecisionTime = 10fe347ca50edb01	202409242f91a861102729d143efdf329a0810e2wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\02-f2-da-ea-75-8c\WpadDecision = "0"	202409242f91a861102729d143efdf329a0810e2wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	202409242f91a861102729d143efdf329a0810e2wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	202409242f91a861102729d143efdf329a0810e2wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	202409242f91a861102729d143efdf329a0810e2wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{8601E328-1EC7-4796-93FE-584D2E341690}\WpadDecision = "0"	202409242f91a861102729d143efdf329a0810e2wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{8601E328-1EC7-4796-93FE-584D2E341690}\WpadNetworkName = "Network 3"	202409242f91a861102729d143efdf329a0810e2wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{8601E328-1EC7-4796-93FE-584D2E341690}\02-f2-da-ea-75-8c	202409242f91a861102729d143efdf329a0810e2wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	202409242f91a861102729d143efdf329a0810e2wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	202409242f91a861102729d143efdf329a0810e2wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{8601E328-1EC7-4796-93FE-584D2E341690}\WpadDecisionReason = "1"	202409242f91a861102729d143efdf329a0810e2wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\02-f2-da-ea-75-8c	202409242f91a861102729d143efdf329a0810e2wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\02-f2-da-ea-75-8c\WpadDecisionTime = 10fe347ca50edb01	202409242f91a861102729d143efdf329a0810e2wannacry.exe

C:\Users\Admin\AppData\Local\Temp\202409242f91a861102729d143efdf329a0810e2wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\202409242f91a861102729d143efdf329a0810e2wannacry.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
PID:2572
- C:\WINDOWS\tasksche.exe
  C:\WINDOWS\tasksche.exe /i
  2⤵
  - Executes dropped EXE
  PID:2792

C:\Users\Admin\AppData\Local\Temp\202409242f91a861102729d143efdf329a0810e2wannacry.exe
C:\Users\Admin\AppData\Local\Temp\202409242f91a861102729d143efdf329a0810e2wannacry.exe -m security
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
PID:3028

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

Replay Monitor

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Downloads

C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
0655f3d070ef0b291e7a8dfec0ef9cc5

SHA1
fc48f53a3f5e7bb5263ea0f0bd7f10d8251be596

SHA256
7a9dc0490221bec2e72919a89da1d8c40791cd1961e976459bb9ed1e3b032c87

SHA512
70f43f378c6e587f0ffa20220c2482e19856b5fbbc94eb4c4cc3f04d5b8f9005bfc82c80c220c4a6c5252bc8f413e69148cdf760d55a57f6de58123ab026de0f

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