chaos | 1ba5ab55b7212ba92a9402677e30e45f12d98a98f78cdcf5864a67d6c264d053

Resubmissions

23-07-2024 13:55

240723-q8alpswflc 10

06-09-2021 06:44

210906-hhm54safa3 10

Analysis

max time kernel
30s
max time network
42s
platform
windows7_x64
resource
win7v20210408
submitted
06-09-2021 06:44

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General

Target

1ba5ab55b7212ba92a9402677e30e45f12d98a98f78cdcf5864a67d6c264d053.exe
Size

610KB
MD5

deb8f4311fd52319f6168c10b626c808
SHA1

f4807d71a1048d05815a09b74997f338e26ba9ff
SHA256

1ba5ab55b7212ba92a9402677e30e45f12d98a98f78cdcf5864a67d6c264d053
SHA512

ecb2c2630b03a07f20e993722ef9f55f5369d11afa21bec3dab59f65867849fb3596e4d3707730d2d75acd5d62e98afb1c06f2e7a80cd4f5946b51867bed9685

Score

10^/10

chaos evasion ransomware spyware stealer

Malware Config

Extracted

Path

C:\Users\Admin\Desktop\README.txt

Ransom Note

All your files have been encrypted !! Don't panic please ! We are here to help you. If you don't want to cooperate and hear your mind instead of our instructions, you will loose stupidly your files but even worse, we are able to kill your main windows process so you will never be able to restart your machine after. All your network may have been infected. If this is the case, note that the decryption software we will give you for one of the machine can be used on all the infected machines. That said, note also that if you don't pay, its all your machines that will get lost and kill. Fortunately, we think you are aware that we don't want this case to happens and you too. That's why to help you, we writed a list of instructions to follow if you want to restore your files. Once you completed all the instructions below, we will be able to give you the decryption software. We don't want to loose time or play with you, we guarantee that you will get that key if you complete your job. Don't be stupid !! To restore your files, you will need to pay a ransom within 62 hours or you will loose everything. The amount requested is 280 dollars. An amount you will need to pay in monero (XMR) which is a cryptocurrency like bitcoin (BTC). Our monero ID (adress where you need to send the money) is : 8AFtPnreZp28xoetUyKiQvVtwrov9PtEbMyvczdNZpBN45EUbEsrE8xYVp4NNqPrtxNjQwn3PbW3FG16EPYcPpKzMU78xN6 We encrypted your files with AES-256 encryption method. It's the strongest encryption method you can find in this world. Again, don't be stupid and pay the ransom. Its the only way to get all things to normal. Steps (instructions) to follow : Step 1 : Search localmonero in your browser search bar and click in the first result. Step 2 : Create an account. Step 3 : Search an offer (of a reliable vendor with lot of sales) that correspond to your payment method. Step 4 : Pay 280 dollars at once. Step 5 : Go into your account wallet and you'll see the amount of monero you have paid (it need to be 280 dollars). Step 6 : Send all the monero to our monero ID (adress) which is : 8AFtPnreZp28xoetUyKiQvVtwrov9PtEbMyvczdNZpBN45EUbEsrE8xYVp4NNqPrtxNjQwn3PbW3FG16EPYcPpKzMU78xN6 Please, copy-paste it carefully !! Verify if it correspond completly to the one in this text file before you send the money !! Once you send, it will take maximum 30 minutes to recieve. When, we will recieve the payment, we will send you the decryption software by email Please contact us at for help and negociation : [email protected] Thanks.

Emails

[email protected]

Signatures

Chaos
Ransomware family first seen in June 2021.
ransomware chaos

Chaos Ransomware 2 IoCs

resource	yara_rule
behavioral1/files/0x00040000000130b9-63.dat	family_chaos
behavioral1/files/0x00040000000130b9-64.dat	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
1924	bcdedit.exe
1108	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
1060	wbadmin.exe

Executes dropped EXE 1 IoCs

pid	Process
1624	svchost.exe

Modifies extensions of user files 4 IoCs

Ransomware generally changes the extension on encrypted files.

ransomware

description	ioc	Process
File renamed	C:\Users\Admin\Pictures\RestoreGrant.raw => C:\Users\Admin\Pictures\RestoreGrant.raw.CRYPTEDPAY	svchost.exe
File renamed	C:\Users\Admin\Pictures\SubmitCheckpoint.raw => C:\Users\Admin\Pictures\SubmitCheckpoint.raw.CRYPTEDPAY	svchost.exe
File renamed	C:\Users\Admin\Pictures\ConvertToUnregister.raw => C:\Users\Admin\Pictures\ConvertToUnregister.raw.CRYPTEDPAY	svchost.exe
File renamed	C:\Users\Admin\Pictures\DisableApprove.tif => C:\Users\Admin\Pictures\DisableApprove.tif.CRYPTEDPAY	svchost.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\README.txt	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
T1081

Drops desktop.ini file(s) 33 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\Saved Games\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\Admin\Documents\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\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\Admin\Downloads\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\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\Links\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Contacts\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Pictures\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Favorites\Links\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Searches\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\Desktop\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\Windows\Start Menu\Programs\Accessories\System Tools\Desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\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\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\Accessories\Accessibility\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\Videos\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\AppData\Roaming\Microsoft\Windows\Start Menu\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Pictures\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Favorites\Links for United States\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-1-5-21-2455352368-1077083310-2879168483-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\54uazd6z4.jpg"	svchost.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
824	vssadmin.exe

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
1672	NOTEPAD.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
1624	svchost.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2032	1ba5ab55b7212ba92a9402677e30e45f12d98a98f78cdcf5864a67d6c264d053.exe
2032	1ba5ab55b7212ba92a9402677e30e45f12d98a98f78cdcf5864a67d6c264d053.exe
1624	svchost.exe
1624	svchost.exe

Suspicious use of AdjustPrivilegeToken 45 IoCs

description	pid	Process
Token: SeDebugPrivilege	2032	1ba5ab55b7212ba92a9402677e30e45f12d98a98f78cdcf5864a67d6c264d053.exe
Token: SeDebugPrivilege	1624	svchost.exe
Token: SeBackupPrivilege	1772	vssvc.exe
Token: SeRestorePrivilege	1772	vssvc.exe
Token: SeAuditPrivilege	1772	vssvc.exe
Token: SeIncreaseQuotaPrivilege	1392	WMIC.exe
Token: SeSecurityPrivilege	1392	WMIC.exe
Token: SeTakeOwnershipPrivilege	1392	WMIC.exe
Token: SeLoadDriverPrivilege	1392	WMIC.exe
Token: SeSystemProfilePrivilege	1392	WMIC.exe
Token: SeSystemtimePrivilege	1392	WMIC.exe
Token: SeProfSingleProcessPrivilege	1392	WMIC.exe
Token: SeIncBasePriorityPrivilege	1392	WMIC.exe
Token: SeCreatePagefilePrivilege	1392	WMIC.exe
Token: SeBackupPrivilege	1392	WMIC.exe
Token: SeRestorePrivilege	1392	WMIC.exe
Token: SeShutdownPrivilege	1392	WMIC.exe
Token: SeDebugPrivilege	1392	WMIC.exe
Token: SeSystemEnvironmentPrivilege	1392	WMIC.exe
Token: SeRemoteShutdownPrivilege	1392	WMIC.exe
Token: SeUndockPrivilege	1392	WMIC.exe
Token: SeManageVolumePrivilege	1392	WMIC.exe
Token: 33	1392	WMIC.exe
Token: 34	1392	WMIC.exe
Token: 35	1392	WMIC.exe
Token: SeIncreaseQuotaPrivilege	1392	WMIC.exe
Token: SeSecurityPrivilege	1392	WMIC.exe
Token: SeTakeOwnershipPrivilege	1392	WMIC.exe
Token: SeLoadDriverPrivilege	1392	WMIC.exe
Token: SeSystemProfilePrivilege	1392	WMIC.exe
Token: SeSystemtimePrivilege	1392	WMIC.exe
Token: SeProfSingleProcessPrivilege	1392	WMIC.exe
Token: SeIncBasePriorityPrivilege	1392	WMIC.exe
Token: SeCreatePagefilePrivilege	1392	WMIC.exe
Token: SeBackupPrivilege	1392	WMIC.exe
Token: SeRestorePrivilege	1392	WMIC.exe
Token: SeShutdownPrivilege	1392	WMIC.exe
Token: SeDebugPrivilege	1392	WMIC.exe
Token: SeSystemEnvironmentPrivilege	1392	WMIC.exe
Token: SeRemoteShutdownPrivilege	1392	WMIC.exe
Token: SeUndockPrivilege	1392	WMIC.exe
Token: SeManageVolumePrivilege	1392	WMIC.exe
Token: 33	1392	WMIC.exe
Token: 34	1392	WMIC.exe
Token: 35	1392	WMIC.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2032 wrote to memory of 1624	2032	1ba5ab55b7212ba92a9402677e30e45f12d98a98f78cdcf5864a67d6c264d053.exe	29
PID 2032 wrote to memory of 1624	2032	1ba5ab55b7212ba92a9402677e30e45f12d98a98f78cdcf5864a67d6c264d053.exe	29
PID 2032 wrote to memory of 1624	2032	1ba5ab55b7212ba92a9402677e30e45f12d98a98f78cdcf5864a67d6c264d053.exe	29
PID 1624 wrote to memory of 292	1624	svchost.exe	31
PID 1624 wrote to memory of 292	1624	svchost.exe	31
PID 1624 wrote to memory of 292	1624	svchost.exe	31
PID 292 wrote to memory of 824	292	cmd.exe	33
PID 292 wrote to memory of 824	292	cmd.exe	33
PID 292 wrote to memory of 824	292	cmd.exe	33
PID 292 wrote to memory of 1392	292	cmd.exe	37
PID 292 wrote to memory of 1392	292	cmd.exe	37
PID 292 wrote to memory of 1392	292	cmd.exe	37
PID 1624 wrote to memory of 1728	1624	svchost.exe	39
PID 1624 wrote to memory of 1728	1624	svchost.exe	39
PID 1624 wrote to memory of 1728	1624	svchost.exe	39
PID 1728 wrote to memory of 1924	1728	cmd.exe	41
PID 1728 wrote to memory of 1924	1728	cmd.exe	41
PID 1728 wrote to memory of 1924	1728	cmd.exe	41
PID 1728 wrote to memory of 1108	1728	cmd.exe	42
PID 1728 wrote to memory of 1108	1728	cmd.exe	42
PID 1728 wrote to memory of 1108	1728	cmd.exe	42
PID 1624 wrote to memory of 1128	1624	svchost.exe	43
PID 1624 wrote to memory of 1128	1624	svchost.exe	43
PID 1624 wrote to memory of 1128	1624	svchost.exe	43
PID 1128 wrote to memory of 1060	1128	cmd.exe	45
PID 1128 wrote to memory of 1060	1128	cmd.exe	45
PID 1128 wrote to memory of 1060	1128	cmd.exe	45
PID 1624 wrote to memory of 1672	1624	svchost.exe	49
PID 1624 wrote to memory of 1672	1624	svchost.exe	49
PID 1624 wrote to memory of 1672	1624	svchost.exe	49

C:\Users\Admin\AppData\Local\Temp\1ba5ab55b7212ba92a9402677e30e45f12d98a98f78cdcf5864a67d6c264d053.exe
"C:\Users\Admin\AppData\Local\Temp\1ba5ab55b7212ba92a9402677e30e45f12d98a98f78cdcf5864a67d6c264d053.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2032
- C:\Users\Admin\AppData\Roaming\svchost.exe
  "C:\Users\Admin\AppData\Roaming\svchost.exe"
  2⤵
  - Executes dropped EXE
  - Modifies extensions of user files
  - Drops startup file
  - 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:1624
- - 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:292
  - - C:\Windows\system32\vssadmin.exe
      vssadmin delete shadows /all /quiet
      4⤵
      Interacts with shadow copies
      PID:824
  - - C:\Windows\System32\Wbem\WMIC.exe
      wmic shadowcopy delete
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:1392
- - 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:1728
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} bootstatuspolicy ignoreallfailures
      4⤵
      Modifies boot configuration data using bcdedit
      PID:1924
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} recoveryenabled no
      4⤵
      Modifies boot configuration data using bcdedit
      PID:1108
- - C:\Windows\System32\cmd.exe
    "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1128
  - - C:\Windows\system32\wbadmin.exe
      wbadmin delete catalog -quiet
      4⤵
      Deletes backup catalog
      PID:1060
- - C:\Windows\system32\NOTEPAD.EXE
    "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\README.txt
    3⤵
    - Opens file in notepad (likely ransom note)
    PID:1672

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1772

C:\Windows\system32\wbengine.exe
"C:\Windows\system32\wbengine.exe"
1⤵
PID:1868

C:\Windows\System32\vdsldr.exe
C:\Windows\System32\vdsldr.exe -Embedding
1⤵
PID:1604

C:\Windows\System32\vds.exe
C:\Windows\System32\vds.exe
1⤵
PID:1524

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

memory/1060-76-0x000007FEFB891000-0x000007FEFB893000-memory.dmp

Filesize
8KB

Download
memory/1624-67-0x000000001AFA0000-0x000000001AFA2000-memory.dmp

Filesize
8KB

Download
memory/1624-65-0x0000000000170000-0x0000000000171000-memory.dmp

Filesize
4KB

Download
memory/2032-60-0x00000000009E0000-0x00000000009E1000-memory.dmp

Filesize
4KB

Download