Analysis
- max time kernel
30s - max time network
42s - platform
windows7_x64 - resource
win7v20210408 - submitted
06/09/2021, 06:44
Static task
static1
Behavioral task
behavioral1
Sample
1ba5ab55b7212ba92a9402677e30e45f12d98a98f78cdcf5864a67d6c264d053.exe
Resource
win7v20210408
windows7_x64
0 signatures
0 seconds
Behavioral task
behavioral2
Sample
1ba5ab55b7212ba92a9402677e30e45f12d98a98f78cdcf5864a67d6c264d053.exe
Resource
win10v20210408
windows10_x64
0 signatures
0 seconds
General
- Target 1ba5ab55b7212ba92a9402677e30e45f12d98a98f78cdcf5864a67d6c264d053.exe
- Size 610KB
- Sample210906-hhm54safa3
- SHA256 1ba5ab55b7212ba92a9402677e30e45f12d98a98f78cdcf5864a67d6c264d053
- MD5 deb8f4311fd52319f6168c10b626c808
- SHA1 f4807d71a1048d05815a09b74997f338e26ba9ff
- SHA512 ecb2c2630b03a07f20e993722ef9f55f5369d11afa21bec3dab59f65867849fb3596e4d3707730d2d75acd5d62e98afb1c06f2e7a80cd4f5946b51867bed9685
- MD5 SHA1 SHA512
Score
10/10
Malware Config
Extracted
Path
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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
Signatures
- Chaos
Ransomware family first seen in June 2021.
- 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.
- Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs
pid Process 1924 bcdedit.exe 1108 bcdedit.exe -
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.
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.
- 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
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.
- Interacts with shadow copies 2 TTPs 1 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
pid Process 824 vssadmin.exe - Opens file in notepad (likely ransom note) 1 IoCs
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
Processes
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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 delete3⤵
- Suspicious use of WriteProcessMemory
PID:292 -
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
PID:824
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C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
PID:1392
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C bcdedit /set {default} bootstatuspolicy ignoreallfailures & bcdedit /set {default} recoveryenabled no3⤵
- Suspicious use of WriteProcessMemory
PID:1728 -
C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
PID:1924
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C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
PID:1108
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet3⤵
- Suspicious use of WriteProcessMemory
PID:1128 -
C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
PID:1060
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C:\Windows\system32\NOTEPAD.EXE"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\README.txt3⤵
- Opens file in notepad (likely ransom note)
PID:1672
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1772
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C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵PID:1868
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C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵PID:1604
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C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵PID:1524