wannacry | 4b721f99c5b9ee83b3e7b1927056985c7aae2f6e3fac0f0f3dc08cbd24ccb270

General

Target

2024-10-12_0077238064f7f71dd35e164f9dde8828_wannacry.exe
Size

2.2MB
MD5

0077238064f7f71dd35e164f9dde8828
SHA1

4ac6074d2b57231a546481d3b209f9b173e0d2bd
SHA256

4b721f99c5b9ee83b3e7b1927056985c7aae2f6e3fac0f0f3dc08cbd24ccb270
SHA512

1242df145c5dc5f0cc768757c42a681e4114c2ee921e13dc7e771f6190b3396571f4f3663d4047a3e0fd41966bfe60c1d9d1c1607548f6f587f42e20e36114f9
SSDEEP

24576:QbLguriIfEcQdIvrYbcMNgef0QeQjG/D8kIq9vn:QnpEjbcBVQej/5vn

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3292) 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
1416	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	2024-10-12_0077238064f7f71dd35e164f9dde8828_wannacry.exe
File created	C:\Windows\SysWOW64\config\systemprofile\AppData\Roaming\Microsoft\Windows\Cookies\7VZ1S64W.txt	2024-10-12_0077238064f7f71dd35e164f9dde8828_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Roaming\Microsoft\Windows\Cookies\7VZ1S64W.txt	2024-10-12_0077238064f7f71dd35e164f9dde8828_wannacry.exe
File created	C:\Windows\SysWOW64\config\systemprofile\AppData\Roaming\Microsoft\Windows\Cookies\MYAIDQJ7.txt	2024-10-12_0077238064f7f71dd35e164f9dde8828_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Roaming\Microsoft\Windows\Cookies\MYAIDQJ7.txt	2024-10-12_0077238064f7f71dd35e164f9dde8828_wannacry.exe

Drops file in Windows directory 3 IoCs

description	ioc	Process
File created	C:\WINDOWS\tasksche.exe	2024-10-12_0077238064f7f71dd35e164f9dde8828_wannacry.exe
File created	C:\Windows\__tmp_rar_sfx_access_check_259441471	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	2024-10-12_0077238064f7f71dd35e164f9dde8828_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-10-12_0077238064f7f71dd35e164f9dde8828_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	tasksche.exe

Modifies data under HKEY_USERS 24 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{AFAD4DEF-FC11-475D-B15C-9DECCBDEEC81}\1a-29-59-a0-ec-09	2024-10-12_0077238064f7f71dd35e164f9dde8828_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\1a-29-59-a0-ec-09\WpadDecisionReason = "1"	2024-10-12_0077238064f7f71dd35e164f9dde8828_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\1a-29-59-a0-ec-09\WpadDecisionTime = 70c7509d5e1cdb01	2024-10-12_0077238064f7f71dd35e164f9dde8828_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	2024-10-12_0077238064f7f71dd35e164f9dde8828_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2024-10-12_0077238064f7f71dd35e164f9dde8828_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	2024-10-12_0077238064f7f71dd35e164f9dde8828_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{AFAD4DEF-FC11-475D-B15C-9DECCBDEEC81}\WpadNetworkName = "Network 3"	2024-10-12_0077238064f7f71dd35e164f9dde8828_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	2024-10-12_0077238064f7f71dd35e164f9dde8828_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	2024-10-12_0077238064f7f71dd35e164f9dde8828_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f018e000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2024-10-12_0077238064f7f71dd35e164f9dde8828_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{AFAD4DEF-FC11-475D-B15C-9DECCBDEEC81}\WpadDecisionReason = "1"	2024-10-12_0077238064f7f71dd35e164f9dde8828_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2024-10-12_0077238064f7f71dd35e164f9dde8828_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	2024-10-12_0077238064f7f71dd35e164f9dde8828_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0"	2024-10-12_0077238064f7f71dd35e164f9dde8828_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	2024-10-12_0077238064f7f71dd35e164f9dde8828_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{AFAD4DEF-FC11-475D-B15C-9DECCBDEEC81}\WpadDecision = "0"	2024-10-12_0077238064f7f71dd35e164f9dde8828_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\1a-29-59-a0-ec-09	2024-10-12_0077238064f7f71dd35e164f9dde8828_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\1a-29-59-a0-ec-09\WpadDecision = "0"	2024-10-12_0077238064f7f71dd35e164f9dde8828_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	2024-10-12_0077238064f7f71dd35e164f9dde8828_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0"	2024-10-12_0077238064f7f71dd35e164f9dde8828_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	2024-10-12_0077238064f7f71dd35e164f9dde8828_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{AFAD4DEF-FC11-475D-B15C-9DECCBDEEC81}\WpadDecisionTime = 70c7509d5e1cdb01	2024-10-12_0077238064f7f71dd35e164f9dde8828_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1"	2024-10-12_0077238064f7f71dd35e164f9dde8828_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{AFAD4DEF-FC11-475D-B15C-9DECCBDEEC81}	2024-10-12_0077238064f7f71dd35e164f9dde8828_wannacry.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1416	tasksche.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1164 wrote to memory of 1416	1164	2024-10-12_0077238064f7f71dd35e164f9dde8828_wannacry.exe	31
PID 1164 wrote to memory of 1416	1164	2024-10-12_0077238064f7f71dd35e164f9dde8828_wannacry.exe	31
PID 1164 wrote to memory of 1416	1164	2024-10-12_0077238064f7f71dd35e164f9dde8828_wannacry.exe	31
PID 1164 wrote to memory of 1416	1164	2024-10-12_0077238064f7f71dd35e164f9dde8828_wannacry.exe	31
PID 1164 wrote to memory of 1416	1164	2024-10-12_0077238064f7f71dd35e164f9dde8828_wannacry.exe	31
PID 1164 wrote to memory of 1416	1164	2024-10-12_0077238064f7f71dd35e164f9dde8828_wannacry.exe	31
PID 1164 wrote to memory of 1416	1164	2024-10-12_0077238064f7f71dd35e164f9dde8828_wannacry.exe	31

C:\Users\Admin\AppData\Local\Temp\2024-10-12_0077238064f7f71dd35e164f9dde8828_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2024-10-12_0077238064f7f71dd35e164f9dde8828_wannacry.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1164
- 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:1416

C:\Users\Admin\AppData\Local\Temp\2024-10-12_0077238064f7f71dd35e164f9dde8828_wannacry.exe
C:\Users\Admin\AppData\Local\Temp\2024-10-12_0077238064f7f71dd35e164f9dde8828_wannacry.exe -m security
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
PID:2076

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
2.0MB

MD5
c6380d7dbc203786e1d790563fdcdab1

SHA1
3ad71555d309cb8075ebdffdbc323279110572d9

SHA256
a2bc4ceb451f9f81fed063b395a6a0a9e7d4cc06e311df15d082bd0a7081d8c4

SHA512
e2eb48c4a6781ccf00c2d75d36c0a762a814dfda030481ee4f0ada456895442f6ce75f5e9e8ddc487dd41d6f469347ba007398a48901e6ce3e2df0725548ba38

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