wannacry | ab14c3f5741c06ad40632447b2fc10662d151afb32066a507aab4ec866ffd488

General

Target

Win32.Wannacry.dll
Size

5.0MB
MD5

30fe2f9a048d7a734c8d9233f64810ba
SHA1

2027a053de21bd5c783c3f823ed1d36966780ed4
SHA256

55504677f82981962d85495231695d3a92aa0b31ec35a957bd9cbbef618658e3
SHA512

b657b02506f768db3255293b0c86452b4dfdd30804629c323aaa9510a3b637b0906e5963179ef7d4aaedc14646f2be2b4292e6584a6c55c6ddb596cff7f20e2a
SSDEEP

49152:SnAQqMSPbcBVQej/1INRx+TSqTdX1HkQo6SAARdhnvxJM0H9:+DqPoBhz1aRxcSUDk36SAEdhvxWa9

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (1340) 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 3 IoCs

pid	Process
3496	mssecsvc.exe
3908	mssecsvc.exe
1680	tasksche.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\WINDOWS\mssecsvc.exe	rundll32.exe
File created	C:\WINDOWS\tasksche.exe	mssecsvc.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	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mssecsvc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mssecsvc.exe

Checks processor information in registry 2 TTPs 3 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	POWERPNT.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	POWERPNT.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	POWERPNT.EXE

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	POWERPNT.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	POWERPNT.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	POWERPNT.EXE

Modifies data under HKEY_USERS 5 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	mssecsvc.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
5064	POWERPNT.EXE

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
5064	POWERPNT.EXE

Suspicious use of SetWindowsHookEx 5 IoCs

pid	Process
5064	POWERPNT.EXE
5064	POWERPNT.EXE
5064	POWERPNT.EXE
5064	POWERPNT.EXE
5064	POWERPNT.EXE

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1004 wrote to memory of 4372	1004	rundll32.exe	80
PID 1004 wrote to memory of 4372	1004	rundll32.exe	80
PID 1004 wrote to memory of 4372	1004	rundll32.exe	80
PID 4372 wrote to memory of 3496	4372	rundll32.exe	82
PID 4372 wrote to memory of 3496	4372	rundll32.exe	82
PID 4372 wrote to memory of 3496	4372	rundll32.exe	82

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\Win32.Wannacry.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1004
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\Win32.Wannacry.dll,#1
  2⤵
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4372
- - C:\WINDOWS\mssecsvc.exe
    C:\WINDOWS\mssecsvc.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    - System Location Discovery: System Language Discovery
    PID:3496
  - - C:\WINDOWS\tasksche.exe
      C:\WINDOWS\tasksche.exe /i
      4⤵
      Executes dropped EXE
      PID:1680

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
PID:3908

C:\Program Files\Microsoft Office\root\Office16\POWERPNT.EXE
"C:\Program Files\Microsoft Office\root\Office16\POWERPNT.EXE"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
PID:5064

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Discovery

Query Registry

System Information Discovery

2

T1082

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:\Users\Admin\AppData\Local\Microsoft\Office\16.0\WebServiceCache\AllUsers\odc.officeapps.live.com\40642038-9C61-4BA9-A9AA-78C2D2155812

Filesize
397B

MD5
2f82426450332b558a61ae9ca551abd9

SHA1
abdbf8f8bdd7572bcdefbd1e0b7da8d3cf17144d

SHA256
57d6315a8f1f11aaa111a9956ddd0d560f791f757c379ed77bbb5a1b5b577f52

SHA512
dbc43dab6cbde98647c5a88cd508a1528ef79c030286cf82cb4cb03c4af81930ad1c3b2644ead9eceea27cd5772324f42a51f04f1693102254567205a6abf0b5

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Office\16.0\WebServiceCache\AllUsers\odc.officeapps.live.com\F838A60E-7F75-4C99-82D5-1F1D17D49D4F

Filesize
1KB

MD5
85ad173999ed440af6120f3b4fd436fa

SHA1
eebe3bae40b0c82db581b905e2a4c4a90055c9b3

SHA256
2fb3e7ca57b5ec8657ff2b909c74dee246e7ed2b30abd60dec96fc4fb88bd165

SHA512
3c506252a27bc4a3d718fc2ad89036850ee3c9d5fd79966fc5e28debe1844d96e8d2777e160e8537034129fd8109dff027bf5eb4a082c99d0db93730ec31427e

Download Submit
C:\Windows\mssecsvc.exe

Filesize
3.6MB

MD5
90a1e06d78737b9a87e8ea42f76e2544

SHA1
785ddf8bd3add2da415cbc7c39aab7eb21407d20

SHA256
e1bee0f7a7cd0ac8659033d9e67bfc83ae03843ed30dff8ca590f916604a6de7

SHA512
40ee623eb975b3890d3e8260e76963d078a7734c040d4151fa0cf11fd6e2421f5ea609f67922a51c6df7a09f077087361586d5f40208bc97ee70531e2a3df5be

Download Submit
C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
0df2ae526d7350c2e3d1383c07a6be04

SHA1
06c4d41c60736ea1e0bb1b095536499e05068442

SHA256
10111f53da4181d548ea77cc91f02a15b9ede3f111f074230761f2afee7cd637

SHA512
9ca1ca36dcefdb1eba3152bc2d14c9dceb3360960338d13db5f8a02327aef80cb0ab238c2c1f3d2dbd7fd75124d4199b5cd63f173a09a0dea212ebb265f8453d

Download Submit
memory/5064-9-0x00007FFCBE850000-0x00007FFCBE860000-memory.dmp

Filesize
64KB

Download
memory/5064-11-0x00007FFCBE850000-0x00007FFCBE860000-memory.dmp

Filesize
64KB

Download
memory/5064-12-0x00007FFCBE850000-0x00007FFCBE860000-memory.dmp

Filesize
64KB

Download
memory/5064-13-0x00007FFCBC2B0000-0x00007FFCBC2C0000-memory.dmp

Filesize
64KB

Download
memory/5064-14-0x00007FFCBC2B0000-0x00007FFCBC2C0000-memory.dmp

Filesize
64KB

Download
memory/5064-10-0x00007FFCBE850000-0x00007FFCBE860000-memory.dmp

Filesize
64KB

Download
memory/5064-8-0x00007FFCBE850000-0x00007FFCBE860000-memory.dmp

Filesize
64KB

Download
memory/5064-61-0x00007FFCBE850000-0x00007FFCBE860000-memory.dmp

Filesize
64KB

Download
memory/5064-60-0x00007FFCBE850000-0x00007FFCBE860000-memory.dmp

Filesize
64KB

Download
memory/5064-63-0x00007FFCBE850000-0x00007FFCBE860000-memory.dmp

Filesize
64KB

Download
memory/5064-62-0x00007FFCBE850000-0x00007FFCBE860000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads