wannacry | 0eb250fb3e19b4f424ca7b49841cdc56b3bb86cd5dfc47bb9da7551789d903e5

Analysis

max time kernel
150s
max time network
123s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
18-12-2024 03:23

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General

Target

2024-12-18_c491ae45d9eab9d9618e3d195ccb2051_swisyn_wannacry.exe
Size

375KB
MD5

c491ae45d9eab9d9618e3d195ccb2051
SHA1

bb2464e1d38a9ff6d9f3a5f2bf11332c34283d9b
SHA256

0eb250fb3e19b4f424ca7b49841cdc56b3bb86cd5dfc47bb9da7551789d903e5
SHA512

91d20879d1d9eb14fce307249accb6ae0192743b9b95352b5f503bd41d2a68a0ffc9ee28e6c81a806d27244f5309cbf629d2893b9e337722707da6208044f4b5
SSDEEP

6144:XsLqdufVUNDafNEd5+IZiZhLlG4AimmC5:cFUNDaVI5+IZUhLlG4AvN

Score

10^/10

wannacry discovery evasion persistence ransomware worm

Malware Config

Signatures

Modifies visiblity of hidden/system files in Explorer 2 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1564.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	explorer.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	svchost.exe

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Wannacry family
wannacry

Executes dropped EXE 6 IoCs

pid	Process
1736	2024-12-18_c491ae45d9eab9d9618e3d195ccb2051_swisyn_wannacry.exe
2884	icsys.icn.exe
2256	explorer.exe
2828	spoolsv.exe
3016	svchost.exe
3012	spoolsv.exe

Loads dropped DLL 7 IoCs

pid	Process
2540	2024-12-18_c491ae45d9eab9d9618e3d195ccb2051_swisyn_wannacry.exe
2540	2024-12-18_c491ae45d9eab9d9618e3d195ccb2051_swisyn_wannacry.exe
2540	2024-12-18_c491ae45d9eab9d9618e3d195ccb2051_swisyn_wannacry.exe
2884	icsys.icn.exe
2256	explorer.exe
2828	spoolsv.exe
3016	svchost.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Explorer = "c:\\windows\\resources\\themes\\explorer.exe RO"	svchost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Svchost = "c:\\windows\\resources\\svchost.exe RO"	svchost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Explorer = "c:\\windows\\resources\\themes\\explorer.exe RO"	explorer.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Svchost = "c:\\windows\\resources\\svchost.exe RO"	explorer.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\explorer.exe	svchost.exe
File opened for modification	C:\Windows\SysWOW64\explorer.exe	explorer.exe

Sets desktop wallpaper using registry 2 TTPs 2 IoCs

ransomware

Defacement

T1491

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\Pictures\\My Wallpaper.jpg"	2024-12-18_c491ae45d9eab9d9618e3d195ccb2051_swisyn_wannacry.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\Desktop\\@[email protected]"	2024-12-18_c491ae45d9eab9d9618e3d195ccb2051_swisyn_wannacry.exe

Drops file in Windows directory 5 IoCs

description	ioc	Process
File opened for modification	C:\Windows\Resources\Themes\icsys.icn.exe	2024-12-18_c491ae45d9eab9d9618e3d195ccb2051_swisyn_wannacry.exe
File opened for modification	\??\c:\windows\resources\themes\explorer.exe	icsys.icn.exe
File opened for modification	\??\c:\windows\resources\spoolsv.exe	explorer.exe
File opened for modification	\??\c:\windows\resources\svchost.exe	spoolsv.exe
File opened for modification	C:\Windows\Resources\tjud.exe	explorer.exe

System Location Discovery: System Language Discovery 1 TTPs 10 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	2024-12-18_c491ae45d9eab9d9618e3d195ccb2051_swisyn_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	explorer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	spoolsv.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-12-18_c491ae45d9eab9d9618e3d195ccb2051_swisyn_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icsys.icn.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	spoolsv.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 3 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
2712	schtasks.exe
2016	schtasks.exe
1092	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2540	2024-12-18_c491ae45d9eab9d9618e3d195ccb2051_swisyn_wannacry.exe
2540	2024-12-18_c491ae45d9eab9d9618e3d195ccb2051_swisyn_wannacry.exe
2540	2024-12-18_c491ae45d9eab9d9618e3d195ccb2051_swisyn_wannacry.exe
2540	2024-12-18_c491ae45d9eab9d9618e3d195ccb2051_swisyn_wannacry.exe
2540	2024-12-18_c491ae45d9eab9d9618e3d195ccb2051_swisyn_wannacry.exe
2540	2024-12-18_c491ae45d9eab9d9618e3d195ccb2051_swisyn_wannacry.exe
2540	2024-12-18_c491ae45d9eab9d9618e3d195ccb2051_swisyn_wannacry.exe
2540	2024-12-18_c491ae45d9eab9d9618e3d195ccb2051_swisyn_wannacry.exe
2540	2024-12-18_c491ae45d9eab9d9618e3d195ccb2051_swisyn_wannacry.exe
2540	2024-12-18_c491ae45d9eab9d9618e3d195ccb2051_swisyn_wannacry.exe
2540	2024-12-18_c491ae45d9eab9d9618e3d195ccb2051_swisyn_wannacry.exe
2540	2024-12-18_c491ae45d9eab9d9618e3d195ccb2051_swisyn_wannacry.exe
2540	2024-12-18_c491ae45d9eab9d9618e3d195ccb2051_swisyn_wannacry.exe
2540	2024-12-18_c491ae45d9eab9d9618e3d195ccb2051_swisyn_wannacry.exe
2540	2024-12-18_c491ae45d9eab9d9618e3d195ccb2051_swisyn_wannacry.exe
2540	2024-12-18_c491ae45d9eab9d9618e3d195ccb2051_swisyn_wannacry.exe
2884	icsys.icn.exe
2884	icsys.icn.exe
2884	icsys.icn.exe
2884	icsys.icn.exe
2884	icsys.icn.exe
2884	icsys.icn.exe
2884	icsys.icn.exe
2884	icsys.icn.exe
2884	icsys.icn.exe
2884	icsys.icn.exe
2884	icsys.icn.exe
2884	icsys.icn.exe
2884	icsys.icn.exe
2884	icsys.icn.exe
2884	icsys.icn.exe
2884	icsys.icn.exe
2884	icsys.icn.exe
2256	explorer.exe
2256	explorer.exe
2256	explorer.exe
2256	explorer.exe
2256	explorer.exe
2256	explorer.exe
2256	explorer.exe
2256	explorer.exe
2256	explorer.exe
2256	explorer.exe
2256	explorer.exe
2256	explorer.exe
2256	explorer.exe
2256	explorer.exe
2256	explorer.exe
2256	explorer.exe
3016	svchost.exe
3016	svchost.exe
3016	svchost.exe
3016	svchost.exe
3016	svchost.exe
3016	svchost.exe
3016	svchost.exe
3016	svchost.exe
3016	svchost.exe
3016	svchost.exe
3016	svchost.exe
3016	svchost.exe
3016	svchost.exe
3016	svchost.exe
3016	svchost.exe

Suspicious behavior: GetForegroundWindowSpam 2 IoCs

pid	Process
2256	explorer.exe
3016	svchost.exe

Suspicious use of SetWindowsHookEx 14 IoCs

pid	Process
2540	2024-12-18_c491ae45d9eab9d9618e3d195ccb2051_swisyn_wannacry.exe
2540	2024-12-18_c491ae45d9eab9d9618e3d195ccb2051_swisyn_wannacry.exe
1736	2024-12-18_c491ae45d9eab9d9618e3d195ccb2051_swisyn_wannacry.exe
1736	2024-12-18_c491ae45d9eab9d9618e3d195ccb2051_swisyn_wannacry.exe
2884	icsys.icn.exe
2884	icsys.icn.exe
2256	explorer.exe
2256	explorer.exe
2828	spoolsv.exe
2828	spoolsv.exe
3016	svchost.exe
3016	svchost.exe
3012	spoolsv.exe
3012	spoolsv.exe

Suspicious use of WriteProcessMemory 40 IoCs

description	pid	Process	procid_target
PID 2540 wrote to memory of 1736	2540	2024-12-18_c491ae45d9eab9d9618e3d195ccb2051_swisyn_wannacry.exe	30
PID 2540 wrote to memory of 1736	2540	2024-12-18_c491ae45d9eab9d9618e3d195ccb2051_swisyn_wannacry.exe	30
PID 2540 wrote to memory of 1736	2540	2024-12-18_c491ae45d9eab9d9618e3d195ccb2051_swisyn_wannacry.exe	30
PID 2540 wrote to memory of 1736	2540	2024-12-18_c491ae45d9eab9d9618e3d195ccb2051_swisyn_wannacry.exe	30
PID 2540 wrote to memory of 2884	2540	2024-12-18_c491ae45d9eab9d9618e3d195ccb2051_swisyn_wannacry.exe	31
PID 2540 wrote to memory of 2884	2540	2024-12-18_c491ae45d9eab9d9618e3d195ccb2051_swisyn_wannacry.exe	31
PID 2540 wrote to memory of 2884	2540	2024-12-18_c491ae45d9eab9d9618e3d195ccb2051_swisyn_wannacry.exe	31
PID 2540 wrote to memory of 2884	2540	2024-12-18_c491ae45d9eab9d9618e3d195ccb2051_swisyn_wannacry.exe	31
PID 2884 wrote to memory of 2256	2884	icsys.icn.exe	32
PID 2884 wrote to memory of 2256	2884	icsys.icn.exe	32
PID 2884 wrote to memory of 2256	2884	icsys.icn.exe	32
PID 2884 wrote to memory of 2256	2884	icsys.icn.exe	32
PID 2256 wrote to memory of 2828	2256	explorer.exe	33
PID 2256 wrote to memory of 2828	2256	explorer.exe	33
PID 2256 wrote to memory of 2828	2256	explorer.exe	33
PID 2256 wrote to memory of 2828	2256	explorer.exe	33
PID 2828 wrote to memory of 3016	2828	spoolsv.exe	34
PID 2828 wrote to memory of 3016	2828	spoolsv.exe	34
PID 2828 wrote to memory of 3016	2828	spoolsv.exe	34
PID 2828 wrote to memory of 3016	2828	spoolsv.exe	34
PID 3016 wrote to memory of 3012	3016	svchost.exe	35
PID 3016 wrote to memory of 3012	3016	svchost.exe	35
PID 3016 wrote to memory of 3012	3016	svchost.exe	35
PID 3016 wrote to memory of 3012	3016	svchost.exe	35
PID 2256 wrote to memory of 940	2256	explorer.exe	36
PID 2256 wrote to memory of 940	2256	explorer.exe	36
PID 2256 wrote to memory of 940	2256	explorer.exe	36
PID 2256 wrote to memory of 940	2256	explorer.exe	36
PID 3016 wrote to memory of 2712	3016	svchost.exe	37
PID 3016 wrote to memory of 2712	3016	svchost.exe	37
PID 3016 wrote to memory of 2712	3016	svchost.exe	37
PID 3016 wrote to memory of 2712	3016	svchost.exe	37
PID 3016 wrote to memory of 2016	3016	svchost.exe	41
PID 3016 wrote to memory of 2016	3016	svchost.exe	41
PID 3016 wrote to memory of 2016	3016	svchost.exe	41
PID 3016 wrote to memory of 2016	3016	svchost.exe	41
PID 3016 wrote to memory of 1092	3016	svchost.exe	43
PID 3016 wrote to memory of 1092	3016	svchost.exe	43
PID 3016 wrote to memory of 1092	3016	svchost.exe	43
PID 3016 wrote to memory of 1092	3016	svchost.exe	43

C:\Users\Admin\AppData\Local\Temp\2024-12-18_c491ae45d9eab9d9618e3d195ccb2051_swisyn_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2024-12-18_c491ae45d9eab9d9618e3d195ccb2051_swisyn_wannacry.exe"
1⤵
- Loads dropped DLL
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2540
- \??\c:\users\admin\appdata\local\temp\2024-12-18_c491ae45d9eab9d9618e3d195ccb2051_swisyn_wannacry.exe
  c:\users\admin\appdata\local\temp\2024-12-18_c491ae45d9eab9d9618e3d195ccb2051_swisyn_wannacry.exe
  2⤵
  - Executes dropped EXE
  - Sets desktop wallpaper using registry
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:1736
- C:\Windows\Resources\Themes\icsys.icn.exe
  C:\Windows\Resources\Themes\icsys.icn.exe
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2884
- - \??\c:\windows\resources\themes\explorer.exe
    c:\windows\resources\themes\explorer.exe
    3⤵
    - Modifies visiblity of hidden/system files in Explorer
    - Executes dropped EXE
    - Loads dropped DLL
    - Adds Run key to start application
    - Drops file in System32 directory
    - Drops file in Windows directory
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:2256
  - - \??\c:\windows\resources\spoolsv.exe
      c:\windows\resources\spoolsv.exe SE
      4⤵
      Executes dropped EXE
      Loads dropped DLL
      Drops file in Windows directory
      System Location Discovery: System Language Discovery
      Suspicious use of SetWindowsHookEx
      Suspicious use of WriteProcessMemory
      PID:2828
    - - \??\c:\windows\resources\svchost.exe
        
        c:\windows\resources\svchost.exe
        5⤵
        Modifies visiblity of hidden/system files in Explorer
        Executes dropped EXE
        Loads dropped DLL
        Adds Run key to start application
        Drops file in System32 directory
        System Location Discovery: System Language Discovery
        Suspicious behavior: EnumeratesProcesses
        Suspicious behavior: GetForegroundWindowSpam
        Suspicious use of SetWindowsHookEx
        Suspicious use of WriteProcessMemory
        
        PID:3016
      - \??\c:\windows\resources\spoolsv.exe
        
        c:\windows\resources\spoolsv.exe PR
        6⤵
        Executes dropped EXE
        System Location Discovery: System Language Discovery
        Suspicious use of SetWindowsHookEx
        
        PID:3012
      - C:\Windows\SysWOW64\schtasks.exe
        
        schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 03:25 /f
        6⤵
        System Location Discovery: System Language Discovery
        Scheduled Task/Job: Scheduled Task
        
        PID:2712
      - C:\Windows\SysWOW64\schtasks.exe
        
        schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 03:26 /f
        6⤵
        System Location Discovery: System Language Discovery
        Scheduled Task/Job: Scheduled Task
        
        PID:2016
      - C:\Windows\SysWOW64\schtasks.exe
        
        schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 03:27 /f
        6⤵
        System Location Discovery: System Language Discovery
        Scheduled Task/Job: Scheduled Task
        
        PID:1092
  - - C:\Windows\Explorer.exe
      C:\Windows\Explorer.exe
      4⤵
      PID:940

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

Modify Registry

T1112

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Defacement

T1491

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Downloads

C:\Users\Admin\AppData\Local\Temp\2024-12-18_c491ae45d9eab9d9618e3d195ccb2051_swisyn_wannacry.exe

Filesize
240KB

MD5
7bf2b57f2a205768755c07f238fb32cc

SHA1
45356a9dd616ed7161a3b9192e2f318d0ab5ad10

SHA256
b9c5d4339809e0ad9a00d4d3dd26fdf44a32819a54abf846bb9b560d81391c25

SHA512
91a39e919296cb5c6eccba710b780519d90035175aa460ec6dbe631324e5e5753bd8d87f395b5481bcd7e1ad623b31a34382d81faae06bef60ec28b49c3122a9

Download Submit
\Windows\Resources\Themes\explorer.exe

Filesize
135KB

MD5
38332a1be088fdadde3170c40c47e7e1

SHA1
63beead50662fb0467b19cbe3fcaec6c34aee6cf

SHA256
eaae8b290701221fbb43c145d86ea0e4ff90f6e3331e61427471b4c74b7b7e7b

SHA512
2e6f58f314af45d6c6b61ea44a46d8cd3f4ba9b88a6f5fe29f5e26bbfa6e71e2f09e39a2f038c876b0565b9a26b9e5977f6f6f5ccedb20c6cc14c5815bbaaa2f

Download Submit
\Windows\Resources\Themes\icsys.icn.exe

Filesize
135KB

MD5
ac874c6c3db51f6deec83330c1d5c0e8

SHA1
d47dd2155081b1a4d0628dcebfe478c339f4f1b0

SHA256
74ea09109516886ae186fe6a850dd77d01e0daa6b316aece7b008e8aaf3b3d96

SHA512
7a9be994f9a03c4bec73f2dd4fdb3bfecaf357f32e712bfca26b8e3e92b8ac73e7a21c545c317e55cefdc8f2d5be41a88c60a5f0168bb135e827a94a8b94c012

Download Submit
\Windows\Resources\spoolsv.exe

Filesize
135KB

MD5
b0255d2ec789409b8e4d9f82d620839c

SHA1
d47fe4f0120374b1866c62ab3095099577949be6

SHA256
85e4c7046f2e45fc9ee1c62c04e76759838387c49680a46d3466fd9c7402d05a

SHA512
c7816bf431a2690545f725148f27f661127ef0d60a5bc090d2aa258ae22aa2b08eeac75893bcc7e33db6ac923813d30d38e45899b727c255b33e17967983db14

Download Submit
\Windows\Resources\svchost.exe

Filesize
135KB

MD5
49c5107aa2f9033e2846ccfd673a7014

SHA1
53c643a39136f6d0ae42510a9ab7c54391cbb145

SHA256
e8280014982d230322c9c16b55bd5796a7f68915088061ce47c02b3553815040

SHA512
2cac5530c0858cd596245b34759407a21c7730b11b9a14a2cc858a1533d8b108b7f7a6408a6346135c52b1e21dc62e69791dea1490133e99b7f6e4cc09ac59e3

Download Submit
memory/2256-63-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2540-0-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2540-61-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2828-47-0x0000000000870000-0x000000000088F000-memory.dmp

Filesize
124KB

Download
memory/2828-60-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2884-26-0x0000000000320000-0x000000000033F000-memory.dmp

Filesize
124KB

Download
memory/2884-62-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/3012-59-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/3016-64-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download