chaos | fdfafaefbc9aa35dea9698a3f95b7c78977c0e3e5ab24e1728cd01f276a8c666

Resubmissions

25-07-2024 14:41

240725-r2tlnstgrl 10

25-07-2024 07:34

240725-jee6rswdjq 10

Analysis

max time kernel
121s
max time network
123s
platform
windows7_x64
resource
win7-20240705-en
resource tags

arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system
submitted
25-07-2024 07:34

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General

Target

2024-07-25_995bb40bd1e676972428beb4a9cf7f96_wannacry.exe
Size

924KB
MD5

995bb40bd1e676972428beb4a9cf7f96
SHA1

49ee1caa2fdeaf62ed60f61765f0bf3ac4ef040d
SHA256

fdfafaefbc9aa35dea9698a3f95b7c78977c0e3e5ab24e1728cd01f276a8c666
SHA512

30b57dda8b472810e2765634b444a792658e95ddd03d7ca33cd3776a3187787cb321d71f7114a0cd803ead5d8d85ef114b147a632aea613a438f3a0ee25ec579
SSDEEP

12288:B0u0frNC1YM8A/hZA4C81uCpGotomst1MAvDHeDW4Xyyvms6DKtVog/aLYkTIAt2:BuTwNmEaEZ

Score

10^/10

chaos defense_evasion evasion execution impact ransomware spyware stealer

Malware Config

Extracted

Path

C:\Users\Admin\Documents\OceanCorp.txt

Ransom Note

----> OceanSpy Ransomware, Game Project from OceanCorp Team <---- All of your files have been encrypted and you won't be able to decrypt / Restore them without our help How To Restore Files? You need to buy our special decryption key with Bitcoin to decrypt all your system! How To Get Bitcoin? This is different beetween countries, you can make google search to look what's the available platforms at your country. Many of our customers have reported these sites to be fast and reliable: OKX - https://www.okx.com Coinmama - https://www.coinmama.com Bitpanda - htps://www.bitpanda.com Want to be sure before you pay we can decrypt your files? You can contact us on telegram and send us 1 file, and we will decrypt it for you. Telegram: [ @OceanCorpBot ] Payment information Amount: 0.015 BTC Bitcoin Address: bc1qu34mwa42deh3zl359q3l2wrvh2g5fgwj7vz4re After you pay, please contact us on telegram [ @OceanCorpBot ] and send us the Transaction ID to get your Decryption key. Kind Regards dwShark

URLs

https://www.okx.com

https://www.coinmama.com

Signatures

Chaos
Ransomware family first seen in June 2021.
ransomware chaos

Chaos Ransomware 3 IoCs

resource	yara_rule
behavioral1/memory/1108-1-0x0000000000380000-0x000000000046E000-memory.dmp	family_chaos
behavioral1/files/0x000d000000012283-5.dat	family_chaos
behavioral1/memory/2080-7-0x0000000000AD0000-0x0000000000BBE000-memory.dmp	family_chaos

Deletes shadow copies 3 TTPs
Ransomware often targets backup files to inhibit system recovery.
ransomware defense_evasion impact execution

File Deletion
T1070.004

Inhibit System Recovery
T1490

Windows Management Instrumentation
T1047

Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs

ransomware evasion

Inhibit System Recovery

T1490

pid	Process
972	bcdedit.exe
1284	bcdedit.exe

Deletes backup catalog 3 TTPs 1 IoCs

Uses wbadmin.exe to inhibit system recovery.

ransomware

Command and Scripting Interpreter

T1059

File Deletion

T1070.004

Inhibit System Recovery

T1490

pid	Process
1576	wbadmin.exe

Drops startup file 3 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.url	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\desktop.ini	svchost.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\OceanCorp.txt	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2080	svchost.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
T1552.001

Drops desktop.ini file(s) 34 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\Downloads\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Videos\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Pictures\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Music\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Videos\Sample Videos\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Desktop\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Favorites\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Administrative Tools\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Music\Sample Music\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Desktop\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Links\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Libraries\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Searches\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Music\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Maintenance\Desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Pictures\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\SendTo\Desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Accessibility\Desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Favorites\Links for United States\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Documents\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Saved Games\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Favorites\Links\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\System Tools\Desktop.ini	svchost.exe
File opened for modification	F:\$RECYCLE.BIN\S-1-5-21-3502430532-24693940-2469786940-1000\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Documents\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Pictures\Sample Pictures\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Videos\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Contacts\desktop.ini	svchost.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-1-5-21-3502430532-24693940-2469786940-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\kntsqs7mq.jpg"	svchost.exe

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

System Information Discovery
T1082

Interacts with shadow copies 3 TTPs 1 IoCs

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

ransomware

File Deletion

T1070.004

Inhibit System Recovery

T1490

Direct Volume Access

T1006

pid	Process
2348	vssadmin.exe

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
1100	NOTEPAD.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2080	svchost.exe

Suspicious behavior: EnumeratesProcesses 7 IoCs

pid	Process
1108	2024-07-25_995bb40bd1e676972428beb4a9cf7f96_wannacry.exe
1108	2024-07-25_995bb40bd1e676972428beb4a9cf7f96_wannacry.exe
1108	2024-07-25_995bb40bd1e676972428beb4a9cf7f96_wannacry.exe
2080	svchost.exe
2080	svchost.exe
2080	svchost.exe
2080	svchost.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeDebugPrivilege	1108	2024-07-25_995bb40bd1e676972428beb4a9cf7f96_wannacry.exe
Token: SeDebugPrivilege	2080	svchost.exe
Token: SeBackupPrivilege	1712	vssvc.exe
Token: SeRestorePrivilege	1712	vssvc.exe
Token: SeAuditPrivilege	1712	vssvc.exe
Token: SeIncreaseQuotaPrivilege	2776	WMIC.exe
Token: SeSecurityPrivilege	2776	WMIC.exe
Token: SeTakeOwnershipPrivilege	2776	WMIC.exe
Token: SeLoadDriverPrivilege	2776	WMIC.exe
Token: SeSystemProfilePrivilege	2776	WMIC.exe
Token: SeSystemtimePrivilege	2776	WMIC.exe
Token: SeProfSingleProcessPrivilege	2776	WMIC.exe
Token: SeIncBasePriorityPrivilege	2776	WMIC.exe
Token: SeCreatePagefilePrivilege	2776	WMIC.exe
Token: SeBackupPrivilege	2776	WMIC.exe
Token: SeRestorePrivilege	2776	WMIC.exe
Token: SeShutdownPrivilege	2776	WMIC.exe
Token: SeDebugPrivilege	2776	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2776	WMIC.exe
Token: SeRemoteShutdownPrivilege	2776	WMIC.exe
Token: SeUndockPrivilege	2776	WMIC.exe
Token: SeManageVolumePrivilege	2776	WMIC.exe
Token: 33	2776	WMIC.exe
Token: 34	2776	WMIC.exe
Token: 35	2776	WMIC.exe
Token: SeIncreaseQuotaPrivilege	2776	WMIC.exe
Token: SeSecurityPrivilege	2776	WMIC.exe
Token: SeTakeOwnershipPrivilege	2776	WMIC.exe
Token: SeLoadDriverPrivilege	2776	WMIC.exe
Token: SeSystemProfilePrivilege	2776	WMIC.exe
Token: SeSystemtimePrivilege	2776	WMIC.exe
Token: SeProfSingleProcessPrivilege	2776	WMIC.exe
Token: SeIncBasePriorityPrivilege	2776	WMIC.exe
Token: SeCreatePagefilePrivilege	2776	WMIC.exe
Token: SeBackupPrivilege	2776	WMIC.exe
Token: SeRestorePrivilege	2776	WMIC.exe
Token: SeShutdownPrivilege	2776	WMIC.exe
Token: SeDebugPrivilege	2776	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2776	WMIC.exe
Token: SeRemoteShutdownPrivilege	2776	WMIC.exe
Token: SeUndockPrivilege	2776	WMIC.exe
Token: SeManageVolumePrivilege	2776	WMIC.exe
Token: 33	2776	WMIC.exe
Token: 34	2776	WMIC.exe
Token: 35	2776	WMIC.exe
Token: SeBackupPrivilege	1700	wbengine.exe
Token: SeRestorePrivilege	1700	wbengine.exe
Token: SeSecurityPrivilege	1700	wbengine.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1108 wrote to memory of 2080	1108	2024-07-25_995bb40bd1e676972428beb4a9cf7f96_wannacry.exe	30
PID 1108 wrote to memory of 2080	1108	2024-07-25_995bb40bd1e676972428beb4a9cf7f96_wannacry.exe	30
PID 1108 wrote to memory of 2080	1108	2024-07-25_995bb40bd1e676972428beb4a9cf7f96_wannacry.exe	30
PID 2080 wrote to memory of 2216	2080	svchost.exe	32
PID 2080 wrote to memory of 2216	2080	svchost.exe	32
PID 2080 wrote to memory of 2216	2080	svchost.exe	32
PID 2216 wrote to memory of 2348	2216	cmd.exe	34
PID 2216 wrote to memory of 2348	2216	cmd.exe	34
PID 2216 wrote to memory of 2348	2216	cmd.exe	34
PID 2216 wrote to memory of 2776	2216	cmd.exe	37
PID 2216 wrote to memory of 2776	2216	cmd.exe	37
PID 2216 wrote to memory of 2776	2216	cmd.exe	37
PID 2080 wrote to memory of 1328	2080	svchost.exe	39
PID 2080 wrote to memory of 1328	2080	svchost.exe	39
PID 2080 wrote to memory of 1328	2080	svchost.exe	39
PID 1328 wrote to memory of 972	1328	cmd.exe	41
PID 1328 wrote to memory of 972	1328	cmd.exe	41
PID 1328 wrote to memory of 972	1328	cmd.exe	41
PID 1328 wrote to memory of 1284	1328	cmd.exe	42
PID 1328 wrote to memory of 1284	1328	cmd.exe	42
PID 1328 wrote to memory of 1284	1328	cmd.exe	42
PID 2080 wrote to memory of 1820	2080	svchost.exe	43
PID 2080 wrote to memory of 1820	2080	svchost.exe	43
PID 2080 wrote to memory of 1820	2080	svchost.exe	43
PID 1820 wrote to memory of 1576	1820	cmd.exe	45
PID 1820 wrote to memory of 1576	1820	cmd.exe	45
PID 1820 wrote to memory of 1576	1820	cmd.exe	45
PID 2080 wrote to memory of 1100	2080	svchost.exe	49
PID 2080 wrote to memory of 1100	2080	svchost.exe	49
PID 2080 wrote to memory of 1100	2080	svchost.exe	49

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012
Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
ransomware

C:\Users\Admin\AppData\Local\Temp\2024-07-25_995bb40bd1e676972428beb4a9cf7f96_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2024-07-25_995bb40bd1e676972428beb4a9cf7f96_wannacry.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1108
- C:\Users\Admin\AppData\Roaming\svchost.exe
  "C:\Users\Admin\AppData\Roaming\svchost.exe"
  2⤵
  - 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:2080
- - 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:2216
  - - C:\Windows\system32\vssadmin.exe
      vssadmin delete shadows /all /quiet
      4⤵
      Interacts with shadow copies
      PID:2348
  - - C:\Windows\System32\Wbem\WMIC.exe
      wmic shadowcopy delete
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:2776
- - 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:1328
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} bootstatuspolicy ignoreallfailures
      4⤵
      Modifies boot configuration data using bcdedit
      PID:972
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} recoveryenabled no
      4⤵
      Modifies boot configuration data using bcdedit
      PID:1284
- - C:\Windows\System32\cmd.exe
    "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1820
  - - C:\Windows\system32\wbadmin.exe
      wbadmin delete catalog -quiet
      4⤵
      Deletes backup catalog
      PID:1576
- - C:\Windows\system32\NOTEPAD.EXE
    "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\OceanCorp.txt
    3⤵
    - Opens file in notepad (likely ransom note)
    PID:1100

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1712

C:\Windows\system32\wbengine.exe
"C:\Windows\system32\wbengine.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1700

C:\Windows\System32\vdsldr.exe
C:\Windows\System32\vdsldr.exe -Embedding
1⤵
PID:1644

C:\Windows\System32\vds.exe
C:\Windows\System32\vds.exe
1⤵
PID:2104

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

Windows Management Instrumentation

T1047

Persistence

Privilege Escalation

Defense Evasion

Direct Volume Access

T1006

Indicator Removal

T1070

File Deletion

T1070.004

Modify Registry

T1112

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Query Registry

T1012

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\svchost.exe

Filesize
924KB

MD5
995bb40bd1e676972428beb4a9cf7f96

SHA1
49ee1caa2fdeaf62ed60f61765f0bf3ac4ef040d

SHA256
fdfafaefbc9aa35dea9698a3f95b7c78977c0e3e5ab24e1728cd01f276a8c666

SHA512
30b57dda8b472810e2765634b444a792658e95ddd03d7ca33cd3776a3187787cb321d71f7114a0cd803ead5d8d85ef114b147a632aea613a438f3a0ee25ec579

Download Submit
C:\Users\Admin\Documents\OceanCorp.txt

Filesize
1KB

MD5
6f9b7944ea7e3673ce8c80b688da3304

SHA1
bcab5884b4003cc590be7f0e790c3aa7cedce002

SHA256
b88f67009e798c76966bad77f2acd96f614093cb651ea322bbfeb422fec5b1cd

SHA512
200c3af15e3ad1df9c9b6b1e6431ed7dc8302d73be21b512cb6bb082512158e0252656d23a6add65cd0af5bbd235e5e218b660181d3c3c1ddda30450e2120668

Download Submit
memory/1108-0-0x000007FEF5EA3000-0x000007FEF5EA4000-memory.dmp

Filesize
4KB

Download
memory/1108-1-0x0000000000380000-0x000000000046E000-memory.dmp

Filesize
952KB

Download
memory/2080-7-0x0000000000AD0000-0x0000000000BBE000-memory.dmp

Filesize
952KB

Download
memory/2080-19-0x000007FEF5EA0000-0x000007FEF688C000-memory.dmp

Filesize
9.9MB

Download
memory/2080-22-0x000007FEF5EA0000-0x000007FEF688C000-memory.dmp

Filesize
9.9MB

Download
memory/2080-475-0x000007FEF5EA0000-0x000007FEF688C000-memory.dmp

Filesize
9.9MB

Download