chaos | 0f3d700c95b21e5437c0aedb3cacd787ce6701c49180d8d564e4574dffc42190

Analysis

max time kernel
82s
max time network
30s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
04/02/2023, 05:25

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General

Target

2023-02-03_2c6f8e680a400cb2b5426090ccbdea93_wannacry.exe
Size

1.9MB
MD5

2c6f8e680a400cb2b5426090ccbdea93
SHA1

47a691c438547b27fac9896f3783026d8be4dbe9
SHA256

0f3d700c95b21e5437c0aedb3cacd787ce6701c49180d8d564e4574dffc42190
SHA512

48a70440e4009c4ab2a913ee3b9dc24b73ab4413cc82f5e8194f1cca87ead356de1de90c461c9109afa5f690cb0c9365f49a5ea83f54b4ad97c4287346237f03
SSDEEP

24576:CSndG2iSNjN2w9Os9cRfO/d8mT6c6aVqwPhUMel84Mn:HfJqsgXmgyJPu

Score

10^/10

chaos evasion ransomware spyware stealer

Malware Config

Signatures

Chaos
Ransomware family first seen in June 2021.
ransomware chaos

Chaos Ransomware 4 IoCs

resource	yara_rule
behavioral1/memory/1756-54-0x0000000000AA0000-0x0000000000C8E000-memory.dmp	family_chaos
behavioral1/files/0x00090000000133e5-56.dat	family_chaos
behavioral1/files/0x00090000000133e5-57.dat	family_chaos
behavioral1/memory/660-58-0x0000000000080000-0x000000000026E000-memory.dmp	family_chaos

Deletes shadow copies 2 TTPs
Ransomware often targets backup files to inhibit system recovery.
ransomware

File Deletion
T1107

Inhibit System Recovery
T1490

Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs

ransomware evasion

Inhibit System Recovery

T1490

pid	Process
1312	bcdedit.exe
856	bcdedit.exe

Deletes backup catalog 3 TTPs 1 IoCs

Uses wbadmin.exe to inhibit system recovery.

ransomware

Command-Line Interface

T1059

File Deletion

T1107

Inhibit System Recovery

T1490

pid	Process
788	wbadmin.exe

Modifies extensions of user files 6 IoCs

Ransomware generally changes the extension on encrypted files.

ransomware

description	ioc	Process
File renamed	C:\Users\Admin\Pictures\EnableClose.raw => C:\Users\Admin\Pictures\EnableClose.raw.qjt8	Windows Defender.exe
File renamed	C:\Users\Admin\Pictures\ExitClose.png => C:\Users\Admin\Pictures\ExitClose.png.eff9	Windows Defender.exe
File renamed	C:\Users\Admin\Pictures\ReceiveRename.png => C:\Users\Admin\Pictures\ReceiveRename.png.g846	Windows Defender.exe
File renamed	C:\Users\Admin\Pictures\SuspendGrant.raw => C:\Users\Admin\Pictures\SuspendGrant.raw.y7su	Windows Defender.exe
File renamed	C:\Users\Admin\Pictures\SyncLimit.png => C:\Users\Admin\Pictures\SyncLimit.png.beuj	Windows Defender.exe
File renamed	C:\Users\Admin\Pictures\TestSkip.tif => C:\Users\Admin\Pictures\TestSkip.tif.5jyu	Windows Defender.exe

Drops startup file 3 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\傻逼，你被耍了！你的所有文件都被加密！.txt	Windows Defender.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Windows Defender.url	Windows Defender.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\desktop.ini	Windows Defender.exe

Executes dropped EXE 1 IoCs

pid	Process
660	Windows Defender.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081

Drops desktop.ini file(s) 33 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\Desktop\desktop.ini	Windows Defender.exe
File opened for modification	C:\Users\Admin\Contacts\desktop.ini	Windows Defender.exe
File opened for modification	C:\Users\Admin\Downloads\desktop.ini	Windows Defender.exe
File opened for modification	C:\Users\Admin\Pictures\desktop.ini	Windows Defender.exe
File opened for modification	C:\Users\Admin\Favorites\Links\desktop.ini	Windows Defender.exe
File opened for modification	C:\Users\Public\Videos\desktop.ini	Windows Defender.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\desktop.ini	Windows Defender.exe
File opened for modification	C:\Users\Public\Music\desktop.ini	Windows Defender.exe
File opened for modification	C:\Users\Public\Music\Sample Music\desktop.ini	Windows Defender.exe
File opened for modification	C:\Users\Admin\Links\desktop.ini	Windows Defender.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar\desktop.ini	Windows Defender.exe
File opened for modification	C:\Users\Admin\Music\desktop.ini	Windows Defender.exe
File opened for modification	C:\Users\Admin\Searches\desktop.ini	Windows Defender.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Libraries\desktop.ini	Windows Defender.exe
File opened for modification	C:\Users\Public\Pictures\Sample Pictures\desktop.ini	Windows Defender.exe
File opened for modification	C:\Users\Public\Videos\Sample Videos\desktop.ini	Windows Defender.exe
File opened for modification	C:\Users\Admin\Documents\desktop.ini	Windows Defender.exe
File opened for modification	C:\Users\Admin\Videos\desktop.ini	Windows Defender.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\desktop.ini	Windows Defender.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Administrative Tools\desktop.ini	Windows Defender.exe
File opened for modification	C:\Users\Public\Desktop\desktop.ini	Windows Defender.exe
File opened for modification	C:\Users\Admin\Favorites\desktop.ini	Windows Defender.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\desktop.ini	Windows Defender.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\desktop.ini	Windows Defender.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Maintenance\Desktop.ini	Windows Defender.exe
File opened for modification	C:\Users\Public\Documents\desktop.ini	Windows Defender.exe
File opened for modification	C:\Users\Admin\Favorites\Links for United States\desktop.ini	Windows Defender.exe
File opened for modification	C:\Users\Public\Pictures\desktop.ini	Windows Defender.exe
File opened for modification	C:\Users\Admin\Saved Games\desktop.ini	Windows Defender.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\SendTo\Desktop.ini	Windows Defender.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Desktop.ini	Windows Defender.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Accessibility\Desktop.ini	Windows Defender.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\System Tools\Desktop.ini	Windows Defender.exe

Sets desktop wallpaper using registry 2 TTPs 1 IoCs

ransomware

Defacement

T1491

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\v6yqdxuj2.jpg"	Windows Defender.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Interacts with shadow copies 2 TTPs 1 IoCs

Shadow copies are often targeted by ransomware to inhibit system recovery.

ransomware

File Deletion

T1107

Inhibit System Recovery

T1490

pid	Process
680	vssadmin.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
660	Windows Defender.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1756	2023-02-03_2c6f8e680a400cb2b5426090ccbdea93_wannacry.exe
660	Windows Defender.exe
660	Windows Defender.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeDebugPrivilege	1756	2023-02-03_2c6f8e680a400cb2b5426090ccbdea93_wannacry.exe
Token: SeDebugPrivilege	660	Windows Defender.exe
Token: SeBackupPrivilege	1688	vssvc.exe
Token: SeRestorePrivilege	1688	vssvc.exe
Token: SeAuditPrivilege	1688	vssvc.exe
Token: SeIncreaseQuotaPrivilege	1224	WMIC.exe
Token: SeSecurityPrivilege	1224	WMIC.exe
Token: SeTakeOwnershipPrivilege	1224	WMIC.exe
Token: SeLoadDriverPrivilege	1224	WMIC.exe
Token: SeSystemProfilePrivilege	1224	WMIC.exe
Token: SeSystemtimePrivilege	1224	WMIC.exe
Token: SeProfSingleProcessPrivilege	1224	WMIC.exe
Token: SeIncBasePriorityPrivilege	1224	WMIC.exe
Token: SeCreatePagefilePrivilege	1224	WMIC.exe
Token: SeBackupPrivilege	1224	WMIC.exe
Token: SeRestorePrivilege	1224	WMIC.exe
Token: SeShutdownPrivilege	1224	WMIC.exe
Token: SeDebugPrivilege	1224	WMIC.exe
Token: SeSystemEnvironmentPrivilege	1224	WMIC.exe
Token: SeRemoteShutdownPrivilege	1224	WMIC.exe
Token: SeUndockPrivilege	1224	WMIC.exe
Token: SeManageVolumePrivilege	1224	WMIC.exe
Token: 33	1224	WMIC.exe
Token: 34	1224	WMIC.exe
Token: 35	1224	WMIC.exe
Token: SeIncreaseQuotaPrivilege	1224	WMIC.exe
Token: SeSecurityPrivilege	1224	WMIC.exe
Token: SeTakeOwnershipPrivilege	1224	WMIC.exe
Token: SeLoadDriverPrivilege	1224	WMIC.exe
Token: SeSystemProfilePrivilege	1224	WMIC.exe
Token: SeSystemtimePrivilege	1224	WMIC.exe
Token: SeProfSingleProcessPrivilege	1224	WMIC.exe
Token: SeIncBasePriorityPrivilege	1224	WMIC.exe
Token: SeCreatePagefilePrivilege	1224	WMIC.exe
Token: SeBackupPrivilege	1224	WMIC.exe
Token: SeRestorePrivilege	1224	WMIC.exe
Token: SeShutdownPrivilege	1224	WMIC.exe
Token: SeDebugPrivilege	1224	WMIC.exe
Token: SeSystemEnvironmentPrivilege	1224	WMIC.exe
Token: SeRemoteShutdownPrivilege	1224	WMIC.exe
Token: SeUndockPrivilege	1224	WMIC.exe
Token: SeManageVolumePrivilege	1224	WMIC.exe
Token: 33	1224	WMIC.exe
Token: 34	1224	WMIC.exe
Token: 35	1224	WMIC.exe
Token: SeBackupPrivilege	1200	wbengine.exe
Token: SeRestorePrivilege	1200	wbengine.exe
Token: SeSecurityPrivilege	1200	wbengine.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1756 wrote to memory of 660	1756	2023-02-03_2c6f8e680a400cb2b5426090ccbdea93_wannacry.exe	28
PID 1756 wrote to memory of 660	1756	2023-02-03_2c6f8e680a400cb2b5426090ccbdea93_wannacry.exe	28
PID 1756 wrote to memory of 660	1756	2023-02-03_2c6f8e680a400cb2b5426090ccbdea93_wannacry.exe	28
PID 660 wrote to memory of 1004	660	Windows Defender.exe	30
PID 660 wrote to memory of 1004	660	Windows Defender.exe	30
PID 660 wrote to memory of 1004	660	Windows Defender.exe	30
PID 1004 wrote to memory of 680	1004	cmd.exe	32
PID 1004 wrote to memory of 680	1004	cmd.exe	32
PID 1004 wrote to memory of 680	1004	cmd.exe	32
PID 1004 wrote to memory of 1224	1004	cmd.exe	36
PID 1004 wrote to memory of 1224	1004	cmd.exe	36
PID 1004 wrote to memory of 1224	1004	cmd.exe	36
PID 660 wrote to memory of 1492	660	Windows Defender.exe	38
PID 660 wrote to memory of 1492	660	Windows Defender.exe	38
PID 660 wrote to memory of 1492	660	Windows Defender.exe	38
PID 1492 wrote to memory of 1312	1492	cmd.exe	40
PID 1492 wrote to memory of 1312	1492	cmd.exe	40
PID 1492 wrote to memory of 1312	1492	cmd.exe	40
PID 1492 wrote to memory of 856	1492	cmd.exe	41
PID 1492 wrote to memory of 856	1492	cmd.exe	41
PID 1492 wrote to memory of 856	1492	cmd.exe	41
PID 660 wrote to memory of 860	660	Windows Defender.exe	42
PID 660 wrote to memory of 860	660	Windows Defender.exe	42
PID 660 wrote to memory of 860	660	Windows Defender.exe	42
PID 860 wrote to memory of 788	860	cmd.exe	44
PID 860 wrote to memory of 788	860	cmd.exe	44
PID 860 wrote to memory of 788	860	cmd.exe	44
PID 660 wrote to memory of 1980	660	Windows Defender.exe	48
PID 660 wrote to memory of 1980	660	Windows Defender.exe	48
PID 660 wrote to memory of 1980	660	Windows Defender.exe	48

C:\Users\Admin\AppData\Local\Temp\2023-02-03_2c6f8e680a400cb2b5426090ccbdea93_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2023-02-03_2c6f8e680a400cb2b5426090ccbdea93_wannacry.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1756
- C:\Users\Admin\AppData\Roaming\Windows Defender.exe
  "C:\Users\Admin\AppData\Roaming\Windows Defender.exe"
  2⤵
  - Modifies extensions of user files
  - Drops startup file
  - Executes dropped EXE
  - Drops desktop.ini file(s)
  - Sets desktop wallpaper using registry
  - Suspicious behavior: AddClipboardFormatListener
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:660
- - C:\Windows\System32\cmd.exe
    "C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1004
  - - C:\Windows\system32\vssadmin.exe
      vssadmin delete shadows /all /quiet
      4⤵
      Interacts with shadow copies
      PID:680
  - - C:\Windows\System32\Wbem\WMIC.exe
      wmic shadowcopy delete
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:1224
- - C:\Windows\System32\cmd.exe
    "C:\Windows\System32\cmd.exe" /C bcdedit /set {default} bootstatuspolicy ignoreallfailures & bcdedit /set {default} recoveryenabled no
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1492
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} bootstatuspolicy ignoreallfailures
      4⤵
      Modifies boot configuration data using bcdedit
      PID:1312
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} recoveryenabled no
      4⤵
      Modifies boot configuration data using bcdedit
      PID:856
- - C:\Windows\System32\cmd.exe
    "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:860
  - - C:\Windows\system32\wbadmin.exe
      wbadmin delete catalog -quiet
      4⤵
      Deletes backup catalog
      PID:788
- - C:\Windows\system32\NOTEPAD.EXE
    "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\傻逼，你被耍了！你的所有文件都被加密！.txt
    3⤵
    PID:1980

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1688

C:\Windows\system32\wbengine.exe
"C:\Windows\system32\wbengine.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1200

C:\Windows\System32\vdsldr.exe
C:\Windows\System32\vdsldr.exe -Embedding
1⤵
PID:1864

C:\Windows\System32\vds.exe
C:\Windows\System32\vds.exe
1⤵
PID:820

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Command-Line Interface

T1059

Persistence

Privilege Escalation

Defense Evasion

File Deletion

T1107

Modify Registry

T1112

Credential Access

Credentials in Files

T1081

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Defacement

T1491

Inhibit System Recovery

T1490

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\Windows Defender.exe

Filesize
1.9MB

MD5
2c6f8e680a400cb2b5426090ccbdea93

SHA1
47a691c438547b27fac9896f3783026d8be4dbe9

SHA256
0f3d700c95b21e5437c0aedb3cacd787ce6701c49180d8d564e4574dffc42190

SHA512
48a70440e4009c4ab2a913ee3b9dc24b73ab4413cc82f5e8194f1cca87ead356de1de90c461c9109afa5f690cb0c9365f49a5ea83f54b4ad97c4287346237f03

Download Submit
C:\Users\Admin\AppData\Roaming\Windows Defender.exe

Filesize
1.9MB

MD5
2c6f8e680a400cb2b5426090ccbdea93

SHA1
47a691c438547b27fac9896f3783026d8be4dbe9

SHA256
0f3d700c95b21e5437c0aedb3cacd787ce6701c49180d8d564e4574dffc42190

SHA512
48a70440e4009c4ab2a913ee3b9dc24b73ab4413cc82f5e8194f1cca87ead356de1de90c461c9109afa5f690cb0c9365f49a5ea83f54b4ad97c4287346237f03

Download Submit
C:\Users\Admin\AppData\Roaming\傻逼，你被耍了！你的所有文件都被加密！.txt

Filesize
470B

MD5
c83c2b8e368e928c7ab979f7bb44dac4

SHA1
4662ae6c1d2195a178bdeb23141df221181b9fdf

SHA256
d42f2a19a64f644085bb2411b58397f5ce8ff1d85857e9985163138964ea0251

SHA512
599f1cb6d607069544a492ed198fea62e51c5cefeb02ec33843cb63255705a2cf412467814493edf7a920b38ad71c65d8e6bd803b28b2f160e3b0727fc2cba2e

Download Submit
memory/660-58-0x0000000000080000-0x000000000026E000-memory.dmp

Filesize
1.9MB

Download
memory/788-67-0x000007FEFBB31000-0x000007FEFBB33000-memory.dmp

Filesize
8KB

Download
memory/1756-54-0x0000000000AA0000-0x0000000000C8E000-memory.dmp

Filesize
1.9MB

Download