wannacry | 1418d7f0d1df0f40eda9924f5aed3f66f23be761b68ebf51596ab4abf1d48b22

Analysis

max time kernel
150s
max time network
150s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
26-12-2024 22:37

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General

Target

2024-12-26_b688640496e9c53dc8761d4cb53f2781_wannacry.exe
Size

3.6MB
MD5

b688640496e9c53dc8761d4cb53f2781
SHA1

298790a7f7fdfb164502f4ba13f4f0326a02f39b
SHA256

1418d7f0d1df0f40eda9924f5aed3f66f23be761b68ebf51596ab4abf1d48b22
SHA512

f99d41a4db89910db6bc457d3b17d143e355c56a925ae63b4cc9effa5f0bea778519ad9c1ae6303b50e7480e5bfe6ab946c4fe0e2773f9a8102632764357099f
SSDEEP

6144:8E9l9ynqIYVTH5DgSg8ajldktM0XXrP2QhMV9qb:8ebLgPlu+QhMb

Score

10^/10

wannacry defense_evasion discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Wannacry family
wannacry
Contacts a large (3260) 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
2792	tasksche.exe
1960	tasksche.exe
2700	tasksche.exe

Loads dropped DLL 1 IoCs

pid	Process
2792	tasksche.exe

Modifies file permissions 1 TTPs 3 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
2128	icacls.exe
2028	icacls.exe
2672	icacls.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
File and Directory Permissions Modification: Windows File and Directory Permissions Modification 1 TTPs
defense_evasion

Windows File and Directory Permissions Modification
T1222.001

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	2024-12-26_b688640496e9c53dc8761d4cb53f2781_wannacry.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\WINDOWS\tasksche.exe	2024-12-26_b688640496e9c53dc8761d4cb53f2781_wannacry.exe

System Location Discovery: System Language Discovery 1 TTPs 11 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	attrib.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	tasksche.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	attrib.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-12-26_b688640496e9c53dc8761d4cb53f2781_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-12-26_b688640496e9c53dc8761d4cb53f2781_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	attrib.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.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\ZoneMap\	2024-12-26_b688640496e9c53dc8761d4cb53f2781_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	2024-12-26_b688640496e9c53dc8761d4cb53f2781_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f0167000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2024-12-26_b688640496e9c53dc8761d4cb53f2781_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{3FA1D44D-6954-487E-946E-2CFB988A7337}\WpadDecisionReason = "1"	2024-12-26_b688640496e9c53dc8761d4cb53f2781_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\fa-1b-8d-94-ae-c9\WpadDecisionReason = "1"	2024-12-26_b688640496e9c53dc8761d4cb53f2781_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	2024-12-26_b688640496e9c53dc8761d4cb53f2781_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0"	2024-12-26_b688640496e9c53dc8761d4cb53f2781_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{3FA1D44D-6954-487E-946E-2CFB988A7337}\WpadDecisionTime = 10d5abbce657db01	2024-12-26_b688640496e9c53dc8761d4cb53f2781_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{3FA1D44D-6954-487E-946E-2CFB988A7337}\fa-1b-8d-94-ae-c9	2024-12-26_b688640496e9c53dc8761d4cb53f2781_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\fa-1b-8d-94-ae-c9\WpadDecision = "0"	2024-12-26_b688640496e9c53dc8761d4cb53f2781_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0"	2024-12-26_b688640496e9c53dc8761d4cb53f2781_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1"	2024-12-26_b688640496e9c53dc8761d4cb53f2781_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\fa-1b-8d-94-ae-c9\WpadDecisionTime = 10d5abbce657db01	2024-12-26_b688640496e9c53dc8761d4cb53f2781_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	2024-12-26_b688640496e9c53dc8761d4cb53f2781_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2024-12-26_b688640496e9c53dc8761d4cb53f2781_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	2024-12-26_b688640496e9c53dc8761d4cb53f2781_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	2024-12-26_b688640496e9c53dc8761d4cb53f2781_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	2024-12-26_b688640496e9c53dc8761d4cb53f2781_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{3FA1D44D-6954-487E-946E-2CFB988A7337}	2024-12-26_b688640496e9c53dc8761d4cb53f2781_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{3FA1D44D-6954-487E-946E-2CFB988A7337}\WpadDecision = "0"	2024-12-26_b688640496e9c53dc8761d4cb53f2781_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{3FA1D44D-6954-487E-946E-2CFB988A7337}\WpadNetworkName = "Network 3"	2024-12-26_b688640496e9c53dc8761d4cb53f2781_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	2024-12-26_b688640496e9c53dc8761d4cb53f2781_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2024-12-26_b688640496e9c53dc8761d4cb53f2781_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\fa-1b-8d-94-ae-c9	2024-12-26_b688640496e9c53dc8761d4cb53f2781_wannacry.exe

Suspicious behavior: CmdExeWriteProcessMemorySpam 1 IoCs

pid	Process
1960	tasksche.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 1996 wrote to memory of 2792	1996	2024-12-26_b688640496e9c53dc8761d4cb53f2781_wannacry.exe	31
PID 1996 wrote to memory of 2792	1996	2024-12-26_b688640496e9c53dc8761d4cb53f2781_wannacry.exe	31
PID 1996 wrote to memory of 2792	1996	2024-12-26_b688640496e9c53dc8761d4cb53f2781_wannacry.exe	31
PID 1996 wrote to memory of 2792	1996	2024-12-26_b688640496e9c53dc8761d4cb53f2781_wannacry.exe	31
PID 2984 wrote to memory of 1960	2984	cmd.exe	33
PID 2984 wrote to memory of 1960	2984	cmd.exe	33
PID 2984 wrote to memory of 1960	2984	cmd.exe	33
PID 2984 wrote to memory of 1960	2984	cmd.exe	33
PID 1960 wrote to memory of 2788	1960	tasksche.exe	34
PID 1960 wrote to memory of 2788	1960	tasksche.exe	34
PID 1960 wrote to memory of 2788	1960	tasksche.exe	34
PID 1960 wrote to memory of 2788	1960	tasksche.exe	34
PID 1960 wrote to memory of 2672	1960	tasksche.exe	36
PID 1960 wrote to memory of 2672	1960	tasksche.exe	36
PID 1960 wrote to memory of 2672	1960	tasksche.exe	36
PID 1960 wrote to memory of 2672	1960	tasksche.exe	36
PID 2792 wrote to memory of 2700	2792	tasksche.exe	39
PID 2792 wrote to memory of 2700	2792	tasksche.exe	39
PID 2792 wrote to memory of 2700	2792	tasksche.exe	39
PID 2792 wrote to memory of 2700	2792	tasksche.exe	39
PID 2700 wrote to memory of 2500	2700	tasksche.exe	40
PID 2700 wrote to memory of 2500	2700	tasksche.exe	40
PID 2700 wrote to memory of 2500	2700	tasksche.exe	40
PID 2700 wrote to memory of 2500	2700	tasksche.exe	40
PID 2700 wrote to memory of 2128	2700	tasksche.exe	41
PID 2700 wrote to memory of 2128	2700	tasksche.exe	41
PID 2700 wrote to memory of 2128	2700	tasksche.exe	41
PID 2700 wrote to memory of 2128	2700	tasksche.exe	41
PID 2792 wrote to memory of 1296	2792	tasksche.exe	44
PID 2792 wrote to memory of 1296	2792	tasksche.exe	44
PID 2792 wrote to memory of 1296	2792	tasksche.exe	44
PID 2792 wrote to memory of 1296	2792	tasksche.exe	44
PID 2792 wrote to memory of 2028	2792	tasksche.exe	46
PID 2792 wrote to memory of 2028	2792	tasksche.exe	46
PID 2792 wrote to memory of 2028	2792	tasksche.exe	46
PID 2792 wrote to memory of 2028	2792	tasksche.exe	46

Views/modifies file attributes 1 TTPs 3 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2788	attrib.exe
2500	attrib.exe
1296	attrib.exe

C:\Users\Admin\AppData\Local\Temp\2024-12-26_b688640496e9c53dc8761d4cb53f2781_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2024-12-26_b688640496e9c53dc8761d4cb53f2781_wannacry.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1996
- C:\WINDOWS\tasksche.exe
  C:\WINDOWS\tasksche.exe /i
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2792
- - C:\ProgramData\lxejlrdtqen920\tasksche.exe
    C:\ProgramData\lxejlrdtqen920\tasksche.exe
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2700
  - - C:\Windows\SysWOW64\attrib.exe
      attrib +h .
      4⤵
      System Location Discovery: System Language Discovery
      Views/modifies file attributes
      PID:2500
  - - C:\Windows\SysWOW64\icacls.exe
      icacls . /grant Everyone:F /T /C /Q
      4⤵
      Modifies file permissions
      System Location Discovery: System Language Discovery
      PID:2128
- - C:\Windows\SysWOW64\attrib.exe
    attrib +h .
    3⤵
    - System Location Discovery: System Language Discovery
    - Views/modifies file attributes
    PID:1296
- - C:\Windows\SysWOW64\icacls.exe
    icacls . /grant Everyone:F /T /C /Q
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:2028

C:\Users\Admin\AppData\Local\Temp\2024-12-26_b688640496e9c53dc8761d4cb53f2781_wannacry.exe
C:\Users\Admin\AppData\Local\Temp\2024-12-26_b688640496e9c53dc8761d4cb53f2781_wannacry.exe -m security
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
PID:2896

C:\Windows\system32\cmd.exe
cmd.exe /c "C:\ProgramData\lxejlrdtqen920\tasksche.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2984
- C:\ProgramData\lxejlrdtqen920\tasksche.exe
  C:\ProgramData\lxejlrdtqen920\tasksche.exe
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: CmdExeWriteProcessMemorySpam
  - Suspicious use of WriteProcessMemory
  PID:1960
- - C:\Windows\SysWOW64\attrib.exe
    attrib +h .
    3⤵
    - System Location Discovery: System Language Discovery
    - Views/modifies file attributes
    PID:2788
- - C:\Windows\SysWOW64\icacls.exe
    icacls . /grant Everyone:F /T /C /Q
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:2672

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

File and Directory Permissions Modification

T1222

Windows File and Directory Permissions Modification

T1222.001

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

Credential Access

Discovery

Network Service Discovery

T1046

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\WINDOWS\tasksche.exe

Filesize
3.4MB

MD5
a27cfbfad728fa5ec8e701a6f93cab26

SHA1
deba582c9c8f059590132395f987c2acf54e7a7f

SHA256
c0057fd3141966017014beb71fa2e31d84d3ddd2a9f20e3e6ee26df8165a531f

SHA512
8c095ccb3367903bc5498d0222ee537ef2bbd4f4204fe9a9a9babe2426d8a377240a15892e248e6e252bf3b229eecc8b1c960136988bf3398941e20a1e542b5d

Download Submit
memory/1996-0-0x0000000000400000-0x0000000000A73000-memory.dmp

Filesize
6.4MB

Download
memory/1996-7-0x0000000000400000-0x0000000000A73000-memory.dmp

Filesize
6.4MB

Download
memory/2896-1-0x0000000000400000-0x0000000000A73000-memory.dmp

Filesize
6.4MB

Download
memory/2896-13-0x0000000000400000-0x0000000000A73000-memory.dmp

Filesize
6.4MB

Download