chaos | 40ff542ecff1ab1682cc5fb3c6cef640d94d89dd13f32837c533966c7f1ca392

Analysis

max time kernel
120s
max time network
120s
platform
windows7_x64
resource
win7-20240220-en
resource tags

arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
submitted
15-04-2024 10:21

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General

Target

2024-04-15_eb9e582bba3727fe7c1ef9fcbb62b0d8_wannacry.exe
Size

429KB
MD5

eb9e582bba3727fe7c1ef9fcbb62b0d8
SHA1

40fc39892de1ae1408a4c3e53cf68aef802344b7
SHA256

40ff542ecff1ab1682cc5fb3c6cef640d94d89dd13f32837c533966c7f1ca392
SHA512

356e09c8c8093039bf51f751efd461a3865be8bd1e7529f86274cc0ae9146aae0485a051c0bd9fc6b2e7e887ebd3c0c0c37e6545c90a51ddf76ce06352076121
SSDEEP

12288:djR89QvWpMLNbzihksiRDEZgKgqViUVDWO6ocY2Fd8:djRAeihV8DopBtf

Score

10^/10

chaos evasion ransomware spyware stealer

Malware Config

Extracted

Path

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

Ransom Note

Hello! All of your files have been encrypted! Your computer was infected with a ransomware virus. Your files have been encrypted and you won't be able to decrypt them without our help. What can I do to get my files back? You can buy our special decryption software, this software will allow you to recover all of your data and remove the ransomware from your computer.The price for the software is $350. Payment can be made in Monero only. What happens if i don't pay? If you decide not to pay the ransom, All of your files and everything on your device will be released on the dark web for people to buy/view and will be deleted from your cumputer forever. This also goes for any other devices that are on your network (WIFI). How do I buy Monero/XMR? Look up a youtube video on how to buy the coin, or visit localmonero.co to buy from a seller. Payment Type: Monero/Xmr Coin Amount: $350 USD In Monero/XMR Monero/XMR address to send to: 45R284b7KTQaeM5t8A2fv61pDZG6PN2HE6qnV7CW6DsGbtCpgAN9F8qRjoppdY24gvV3dCKRExQ5FWS7wU1Fw8cSN6D1aFf

Signatures

Chaos
Ransomware family first seen in June 2021.
ransomware chaos

Chaos Ransomware 4 IoCs

resource	yara_rule
behavioral1/memory/2784-0-0x0000000001200000-0x0000000001272000-memory.dmp	family_chaos
behavioral1/files/0x000c000000012253-5.dat	family_chaos
behavioral1/memory/2496-7-0x0000000001020000-0x0000000001092000-memory.dmp	family_chaos
behavioral1/memory/2496-11-0x000000001AFE0000-0x000000001B060000-memory.dmp	family_chaos

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

File Deletion
T1070.004

Inhibit System Recovery
T1490

Detects command variations typically used by ransomware 4 IoCs

resource	yara_rule
behavioral1/memory/2784-0-0x0000000001200000-0x0000000001272000-memory.dmp	INDICATOR_SUSPICIOUS_GENRansomware
behavioral1/files/0x000c000000012253-5.dat	INDICATOR_SUSPICIOUS_GENRansomware
behavioral1/memory/2496-7-0x0000000001020000-0x0000000001092000-memory.dmp	INDICATOR_SUSPICIOUS_GENRansomware
behavioral1/memory/2496-11-0x000000001AFE0000-0x000000001B060000-memory.dmp	INDICATOR_SUSPICIOUS_GENRansomware

Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs

ransomware evasion

Inhibit System Recovery

T1490

pid	Process
1216	bcdedit.exe
2040	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
2188	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\read_it.txt	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2496	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\Saved Games\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Pictures\Sample Pictures\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Contacts\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\Public\Pictures\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\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Administrative Tools\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\Documents\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Searches\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\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\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\System Tools\Desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Documents\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Desktop\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Downloads\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\SendTo\Desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Links\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Music\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Videos\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\Libraries\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\Pictures\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\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\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\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	F:\$RECYCLE.BIN\S-1-5-21-2721934792-624042501-2768869379-1000\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-1-5-21-2721934792-624042501-2768869379-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\f174fx8nh.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 2 TTPs 1 IoCs

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

ransomware

File Deletion

T1070.004

Inhibit System Recovery

T1490

pid	Process
2804	vssadmin.exe

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
1000	NOTEPAD.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2496	svchost.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2784	2024-04-15_eb9e582bba3727fe7c1ef9fcbb62b0d8_wannacry.exe
2784	2024-04-15_eb9e582bba3727fe7c1ef9fcbb62b0d8_wannacry.exe
2496	svchost.exe
2496	svchost.exe
2496	svchost.exe
2496	svchost.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeDebugPrivilege	2784	2024-04-15_eb9e582bba3727fe7c1ef9fcbb62b0d8_wannacry.exe
Token: SeDebugPrivilege	2496	svchost.exe
Token: SeBackupPrivilege	1384	vssvc.exe
Token: SeRestorePrivilege	1384	vssvc.exe
Token: SeAuditPrivilege	1384	vssvc.exe
Token: SeIncreaseQuotaPrivilege	1584	WMIC.exe
Token: SeSecurityPrivilege	1584	WMIC.exe
Token: SeTakeOwnershipPrivilege	1584	WMIC.exe
Token: SeLoadDriverPrivilege	1584	WMIC.exe
Token: SeSystemProfilePrivilege	1584	WMIC.exe
Token: SeSystemtimePrivilege	1584	WMIC.exe
Token: SeProfSingleProcessPrivilege	1584	WMIC.exe
Token: SeIncBasePriorityPrivilege	1584	WMIC.exe
Token: SeCreatePagefilePrivilege	1584	WMIC.exe
Token: SeBackupPrivilege	1584	WMIC.exe
Token: SeRestorePrivilege	1584	WMIC.exe
Token: SeShutdownPrivilege	1584	WMIC.exe
Token: SeDebugPrivilege	1584	WMIC.exe
Token: SeSystemEnvironmentPrivilege	1584	WMIC.exe
Token: SeRemoteShutdownPrivilege	1584	WMIC.exe
Token: SeUndockPrivilege	1584	WMIC.exe
Token: SeManageVolumePrivilege	1584	WMIC.exe
Token: 33	1584	WMIC.exe
Token: 34	1584	WMIC.exe
Token: 35	1584	WMIC.exe
Token: SeIncreaseQuotaPrivilege	1584	WMIC.exe
Token: SeSecurityPrivilege	1584	WMIC.exe
Token: SeTakeOwnershipPrivilege	1584	WMIC.exe
Token: SeLoadDriverPrivilege	1584	WMIC.exe
Token: SeSystemProfilePrivilege	1584	WMIC.exe
Token: SeSystemtimePrivilege	1584	WMIC.exe
Token: SeProfSingleProcessPrivilege	1584	WMIC.exe
Token: SeIncBasePriorityPrivilege	1584	WMIC.exe
Token: SeCreatePagefilePrivilege	1584	WMIC.exe
Token: SeBackupPrivilege	1584	WMIC.exe
Token: SeRestorePrivilege	1584	WMIC.exe
Token: SeShutdownPrivilege	1584	WMIC.exe
Token: SeDebugPrivilege	1584	WMIC.exe
Token: SeSystemEnvironmentPrivilege	1584	WMIC.exe
Token: SeRemoteShutdownPrivilege	1584	WMIC.exe
Token: SeUndockPrivilege	1584	WMIC.exe
Token: SeManageVolumePrivilege	1584	WMIC.exe
Token: 33	1584	WMIC.exe
Token: 34	1584	WMIC.exe
Token: 35	1584	WMIC.exe
Token: SeBackupPrivilege	1972	wbengine.exe
Token: SeRestorePrivilege	1972	wbengine.exe
Token: SeSecurityPrivilege	1972	wbengine.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2784 wrote to memory of 2496	2784	2024-04-15_eb9e582bba3727fe7c1ef9fcbb62b0d8_wannacry.exe	28
PID 2784 wrote to memory of 2496	2784	2024-04-15_eb9e582bba3727fe7c1ef9fcbb62b0d8_wannacry.exe	28
PID 2784 wrote to memory of 2496	2784	2024-04-15_eb9e582bba3727fe7c1ef9fcbb62b0d8_wannacry.exe	28
PID 2496 wrote to memory of 2692	2496	svchost.exe	30
PID 2496 wrote to memory of 2692	2496	svchost.exe	30
PID 2496 wrote to memory of 2692	2496	svchost.exe	30
PID 2692 wrote to memory of 2804	2692	cmd.exe	32
PID 2692 wrote to memory of 2804	2692	cmd.exe	32
PID 2692 wrote to memory of 2804	2692	cmd.exe	32
PID 2692 wrote to memory of 1584	2692	cmd.exe	35
PID 2692 wrote to memory of 1584	2692	cmd.exe	35
PID 2692 wrote to memory of 1584	2692	cmd.exe	35
PID 2496 wrote to memory of 1040	2496	svchost.exe	37
PID 2496 wrote to memory of 1040	2496	svchost.exe	37
PID 2496 wrote to memory of 1040	2496	svchost.exe	37
PID 1040 wrote to memory of 1216	1040	cmd.exe	39
PID 1040 wrote to memory of 1216	1040	cmd.exe	39
PID 1040 wrote to memory of 1216	1040	cmd.exe	39
PID 1040 wrote to memory of 2040	1040	cmd.exe	40
PID 1040 wrote to memory of 2040	1040	cmd.exe	40
PID 1040 wrote to memory of 2040	1040	cmd.exe	40
PID 2496 wrote to memory of 1968	2496	svchost.exe	41
PID 2496 wrote to memory of 1968	2496	svchost.exe	41
PID 2496 wrote to memory of 1968	2496	svchost.exe	41
PID 1968 wrote to memory of 2188	1968	cmd.exe	43
PID 1968 wrote to memory of 2188	1968	cmd.exe	43
PID 1968 wrote to memory of 2188	1968	cmd.exe	43
PID 2496 wrote to memory of 1000	2496	svchost.exe	47
PID 2496 wrote to memory of 1000	2496	svchost.exe	47
PID 2496 wrote to memory of 1000	2496	svchost.exe	47

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\2024-04-15_eb9e582bba3727fe7c1ef9fcbb62b0d8_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-15_eb9e582bba3727fe7c1ef9fcbb62b0d8_wannacry.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2784
- 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:2496
- - 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:2692
  - - C:\Windows\system32\vssadmin.exe
      vssadmin delete shadows /all /quiet
      4⤵
      Interacts with shadow copies
      PID:2804
  - - C:\Windows\System32\Wbem\WMIC.exe
      wmic shadowcopy delete
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:1584
- - 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:1040
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} bootstatuspolicy ignoreallfailures
      4⤵
      Modifies boot configuration data using bcdedit
      PID:1216
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} recoveryenabled no
      4⤵
      Modifies boot configuration data using bcdedit
      PID:2040
- - C:\Windows\System32\cmd.exe
    "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1968
  - - C:\Windows\system32\wbadmin.exe
      wbadmin delete catalog -quiet
      4⤵
      Deletes backup catalog
      PID:2188
- - C:\Windows\system32\NOTEPAD.EXE
    "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\read_it.txt
    3⤵
    - Opens file in notepad (likely ransom note)
    PID:1000

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1384

C:\Windows\system32\wbengine.exe
"C:\Windows\system32\wbengine.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1972

C:\Windows\System32\vdsldr.exe
C:\Windows\System32\vdsldr.exe -Embedding
1⤵
PID:2196

C:\Windows\System32\vds.exe
C:\Windows\System32\vds.exe
1⤵
PID:604

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

Persistence

Privilege Escalation

Defense Evasion

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
429KB

MD5
eb9e582bba3727fe7c1ef9fcbb62b0d8

SHA1
40fc39892de1ae1408a4c3e53cf68aef802344b7

SHA256
40ff542ecff1ab1682cc5fb3c6cef640d94d89dd13f32837c533966c7f1ca392

SHA512
356e09c8c8093039bf51f751efd461a3865be8bd1e7529f86274cc0ae9146aae0485a051c0bd9fc6b2e7e887ebd3c0c0c37e6545c90a51ddf76ce06352076121

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

Filesize
1KB

MD5
e6d94ee99fe1ec47318d0a5f954ebc1f

SHA1
5717650f352680db8ca778f6a4ebb62e99a456d5

SHA256
c956c6b1d78155651a3776a1e3a6f3492738c36332b0543dcbf461b10d643905

SHA512
21f4a7dc2034af20e528365d350230806a6eee6581f7255fb001685eff2955578b4185eb0e10315190c81ae4a0eb07e1f92a61e951164f753993d22e7c62af6b

Download Submit
memory/2496-9-0x000007FEF6080000-0x000007FEF6A6C000-memory.dmp

Filesize
9.9MB

Download
memory/2496-7-0x0000000001020000-0x0000000001092000-memory.dmp

Filesize
456KB

Download
memory/2496-11-0x000000001AFE0000-0x000000001B060000-memory.dmp

Filesize
512KB

Download
memory/2496-459-0x000007FEF6080000-0x000007FEF6A6C000-memory.dmp

Filesize
9.9MB

Download
memory/2496-460-0x000000001AFE0000-0x000000001B060000-memory.dmp

Filesize
512KB

Download
memory/2784-0-0x0000000001200000-0x0000000001272000-memory.dmp

Filesize
456KB

Download
memory/2784-1-0x000007FEF6080000-0x000007FEF6A6C000-memory.dmp

Filesize
9.9MB

Download
memory/2784-8-0x000007FEF6080000-0x000007FEF6A6C000-memory.dmp

Filesize
9.9MB

Download