chaos | 8727091cbb89e5e31eeb2503ffaa242601c8840eee0973fd62fedf1b4b58ab44

Analysis

max time kernel
117s
max time network
121s
platform
windows7_x64
resource
win7-20230712-en
resource tags

arch:x64arch:x86image:win7-20230712-enlocale:en-usos:windows7-x64system
submitted
25/07/2023, 06:32

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
1.exe
Size 953KB
Sample230725-hal8vabe81
SHA256 8727091cbb89e5e31eeb2503ffaa242601c8840eee0973fd62fedf1b4b58ab44
MD5 adb3dde4a25e596c16ced4cdfc6ff8dd
SHA1 7934e6bc9489933c0af8dfe7bdff482fc6759bdc
SHA512 f14c27892ed4d11bdd46a130abc7fa40ae8c4577bcd45c3af7c5928b82f27c3646b906fda880e5c9df623071edaab8de82fd46af8f3194f33d7d46c2c3d1d587
SSDEEP 12288:vEPMLC814R2hig4tHkg2W+AU+R2TjsPvEpv8LpgUO4EP3SL98l0zmWHQuTwYzzjc:/ztQE1ov2AZ9HjkftWy3P
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

chaos evasion ransomware spyware stealer

Malware Config

Extracted

Path

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

Ransom Note

WELCOME, DODO has returned AGAIN. Your files have been encrypted and you won't be able to decrypt them. You can buy decryption software from us, this software will allow you to recover all of your data and remove the ransomware from your computer. The price of the software is $15. Payment can be made in Bitcoin or XMR. How do I pay, where do I get Bitcoin or XMR? Purchasing cryptocurrency varies from country to country, you are best advised to do a quick google search yourself to find out how to buy Bitcoin or XMR. Payment information: send $15, to one of our addresses, then send us email with payment confirmation and you'll get the decryption software in email. Email Address : [email protected] BTC address: bc1qsht77cpgw7kv420r4secmu88g34wvn96dsyc5s XMR address: 44GUTQ7WqysSjLDCXfTnsYLCVJNGp67AECA9kTrAvjYCNz3ScZkYXZKP2EbR3DfbXPUYw6bMkaBuYCd6PdJCYngr4WtCeFt

Emails

[email protected]

Signatures

Chaos
Ransomware family first seen in June 2021.
ransomware chaos

Chaos Ransomware 4 IoCs

resource	yara_rule
behavioral1/memory/2544-54-0x0000000000B20000-0x0000000000C14000-memory.dmp	family_chaos
behavioral1/memory/2904-61-0x00000000008A0000-0x0000000000994000-memory.dmp	family_chaos
behavioral1/files/0x0008000000012023-59.dat	family_chaos
behavioral1/files/0x0008000000012023-60.dat	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

Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs

ransomware evasion

Inhibit System Recovery

T1490

pid	Process
2388	bcdedit.exe
320	bcdedit.exe

Renames multiple (188) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
ransomware

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
2292	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\PLEASEREAD.txt	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2904	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\Pictures\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\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\Videos\Sample 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\Start Menu\Programs\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\Documents\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Favorites\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\Windows\Start Menu\Programs\Accessories\Accessibility\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\Contacts\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Searches\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Pictures\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\Recent\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\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Administrative 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\AppData\Roaming\Microsoft\Windows\Libraries\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Pictures\Sample Pictures\desktop.ini	svchost.exe
File opened for modification	F:\$RECYCLE.BIN\S-1-5-21-4159544280-4273523227-683900707-1000\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\Music\Sample Music\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Saved Games\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

Sets desktop wallpaper using registry 2 TTPs 1 IoCs

ransomware

Defacement

T1491

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-4159544280-4273523227-683900707-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\yzmd2x84k.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
1108	vssadmin.exe

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
1088	NOTEPAD.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2904	svchost.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2544	1.exe
2544	1.exe
2904	svchost.exe
2904	svchost.exe
2904	svchost.exe
2904	svchost.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeDebugPrivilege	2544	1.exe
Token: SeDebugPrivilege	2904	svchost.exe
Token: SeBackupPrivilege	2980	vssvc.exe
Token: SeRestorePrivilege	2980	vssvc.exe
Token: SeAuditPrivilege	2980	vssvc.exe
Token: SeIncreaseQuotaPrivilege	2996	WMIC.exe
Token: SeSecurityPrivilege	2996	WMIC.exe
Token: SeTakeOwnershipPrivilege	2996	WMIC.exe
Token: SeLoadDriverPrivilege	2996	WMIC.exe
Token: SeSystemProfilePrivilege	2996	WMIC.exe
Token: SeSystemtimePrivilege	2996	WMIC.exe
Token: SeProfSingleProcessPrivilege	2996	WMIC.exe
Token: SeIncBasePriorityPrivilege	2996	WMIC.exe
Token: SeCreatePagefilePrivilege	2996	WMIC.exe
Token: SeBackupPrivilege	2996	WMIC.exe
Token: SeRestorePrivilege	2996	WMIC.exe
Token: SeShutdownPrivilege	2996	WMIC.exe
Token: SeDebugPrivilege	2996	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2996	WMIC.exe
Token: SeRemoteShutdownPrivilege	2996	WMIC.exe
Token: SeUndockPrivilege	2996	WMIC.exe
Token: SeManageVolumePrivilege	2996	WMIC.exe
Token: 33	2996	WMIC.exe
Token: 34	2996	WMIC.exe
Token: 35	2996	WMIC.exe
Token: SeIncreaseQuotaPrivilege	2996	WMIC.exe
Token: SeSecurityPrivilege	2996	WMIC.exe
Token: SeTakeOwnershipPrivilege	2996	WMIC.exe
Token: SeLoadDriverPrivilege	2996	WMIC.exe
Token: SeSystemProfilePrivilege	2996	WMIC.exe
Token: SeSystemtimePrivilege	2996	WMIC.exe
Token: SeProfSingleProcessPrivilege	2996	WMIC.exe
Token: SeIncBasePriorityPrivilege	2996	WMIC.exe
Token: SeCreatePagefilePrivilege	2996	WMIC.exe
Token: SeBackupPrivilege	2996	WMIC.exe
Token: SeRestorePrivilege	2996	WMIC.exe
Token: SeShutdownPrivilege	2996	WMIC.exe
Token: SeDebugPrivilege	2996	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2996	WMIC.exe
Token: SeRemoteShutdownPrivilege	2996	WMIC.exe
Token: SeUndockPrivilege	2996	WMIC.exe
Token: SeManageVolumePrivilege	2996	WMIC.exe
Token: 33	2996	WMIC.exe
Token: 34	2996	WMIC.exe
Token: 35	2996	WMIC.exe
Token: SeBackupPrivilege	1600	wbengine.exe
Token: SeRestorePrivilege	1600	wbengine.exe
Token: SeSecurityPrivilege	1600	wbengine.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2544 wrote to memory of 2904	2544	1.exe	28
PID 2544 wrote to memory of 2904	2544	1.exe	28
PID 2544 wrote to memory of 2904	2544	1.exe	28
PID 2904 wrote to memory of 864	2904	svchost.exe	30
PID 2904 wrote to memory of 864	2904	svchost.exe	30
PID 2904 wrote to memory of 864	2904	svchost.exe	30
PID 864 wrote to memory of 1108	864	cmd.exe	32
PID 864 wrote to memory of 1108	864	cmd.exe	32
PID 864 wrote to memory of 1108	864	cmd.exe	32
PID 864 wrote to memory of 2996	864	cmd.exe	36
PID 864 wrote to memory of 2996	864	cmd.exe	36
PID 864 wrote to memory of 2996	864	cmd.exe	36
PID 2904 wrote to memory of 1736	2904	svchost.exe	38
PID 2904 wrote to memory of 1736	2904	svchost.exe	38
PID 2904 wrote to memory of 1736	2904	svchost.exe	38
PID 1736 wrote to memory of 2388	1736	cmd.exe	40
PID 1736 wrote to memory of 2388	1736	cmd.exe	40
PID 1736 wrote to memory of 2388	1736	cmd.exe	40
PID 1736 wrote to memory of 320	1736	cmd.exe	41
PID 1736 wrote to memory of 320	1736	cmd.exe	41
PID 1736 wrote to memory of 320	1736	cmd.exe	41
PID 2904 wrote to memory of 2496	2904	svchost.exe	42
PID 2904 wrote to memory of 2496	2904	svchost.exe	42
PID 2904 wrote to memory of 2496	2904	svchost.exe	42
PID 2496 wrote to memory of 2292	2496	cmd.exe	44
PID 2496 wrote to memory of 2292	2496	cmd.exe	44
PID 2496 wrote to memory of 2292	2496	cmd.exe	44
PID 2904 wrote to memory of 1088	2904	svchost.exe	48
PID 2904 wrote to memory of 1088	2904	svchost.exe	48
PID 2904 wrote to memory of 1088	2904	svchost.exe	48

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\1.exe
"C:\Users\Admin\AppData\Local\Temp\1.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2544
- 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:2904
- - 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:864
  - - C:\Windows\system32\vssadmin.exe
      vssadmin delete shadows /all /quiet
      4⤵
      Interacts with shadow copies
      PID:1108
  - - C:\Windows\System32\Wbem\WMIC.exe
      wmic shadowcopy delete
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:2996
- - 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:1736
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} bootstatuspolicy ignoreallfailures
      4⤵
      Modifies boot configuration data using bcdedit
      PID:2388
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} recoveryenabled no
      4⤵
      Modifies boot configuration data using bcdedit
      PID:320
- - C:\Windows\System32\cmd.exe
    "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2496
  - - C:\Windows\system32\wbadmin.exe
      wbadmin delete catalog -quiet
      4⤵
      Deletes backup catalog
      PID:2292
- - C:\Windows\system32\NOTEPAD.EXE
    "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\PLEASEREAD.txt
    3⤵
    - Opens file in notepad (likely ransom note)
    PID:1088

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2980

C:\Windows\system32\wbengine.exe
"C:\Windows\system32\wbengine.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1600

C:\Windows\System32\vdsldr.exe
C:\Windows\System32\vdsldr.exe -Embedding
1⤵
PID:788

C:\Windows\System32\vds.exe
C:\Windows\System32\vds.exe
1⤵
PID:2212

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

Loading Replay Monitor...

Downloads

PLEASEREAD.txt

Path C:\Users\Admin\AppData\Roaming\PLEASEREAD.txt
Size 898B
SHA256 35bfff091f9ccc347a27baa02e44db0e4d02ade43f1767777e24d0a6a7abee89
MD5 30f33638264fec81af03fc5a9eddd072
SHA1 72d5d2da2ad261ec87c53d05b570c89e917e8ff1
SHA512 f5b0e836a2d963dc81c2640921f6bec66ea0a12fdda7549140c2cc1ab028f1c198d83fbb83b867770b061002573f23d6927a2e56b8724b85e5b84c042ab87c0e
MD5 SHA1 SHA512

Submit Download

svchost.exe

Path C:\Users\Admin\AppData\Roaming\svchost.exe
Size 953KB
SHA256 8727091cbb89e5e31eeb2503ffaa242601c8840eee0973fd62fedf1b4b58ab44
MD5 adb3dde4a25e596c16ced4cdfc6ff8dd
SHA1 7934e6bc9489933c0af8dfe7bdff482fc6759bdc
SHA512 f14c27892ed4d11bdd46a130abc7fa40ae8c4577bcd45c3af7c5928b82f27c3646b906fda880e5c9df623071edaab8de82fd46af8f3194f33d7d46c2c3d1d587
SSDEEP 12288:vEPMLC814R2hig4tHkg2W+AU+R2TjsPvEpv8LpgUO4EP3SL98l0zmWHQuTwYzzjc:/ztQE1ov2AZ9HjkftWy3P
MD5 SHA1 SHA512 SSDEEP

Submit Download

svchost.exe

Path C:\Users\Admin\AppData\Roaming\svchost.exe
Size 953KB
SHA256 8727091cbb89e5e31eeb2503ffaa242601c8840eee0973fd62fedf1b4b58ab44
MD5 adb3dde4a25e596c16ced4cdfc6ff8dd
SHA1 7934e6bc9489933c0af8dfe7bdff482fc6759bdc
SHA512 f14c27892ed4d11bdd46a130abc7fa40ae8c4577bcd45c3af7c5928b82f27c3646b906fda880e5c9df623071edaab8de82fd46af8f3194f33d7d46c2c3d1d587
SSDEEP 12288:vEPMLC814R2hig4tHkg2W+AU+R2TjsPvEpv8LpgUO4EP3SL98l0zmWHQuTwYzzjc:/ztQE1ov2AZ9HjkftWy3P
MD5 SHA1 SHA512 SSDEEP

Submit Download

PLEASEREAD.txt

Path C:\Users\Admin\Documents\PLEASEREAD.txt
Size 898B
SHA256 35bfff091f9ccc347a27baa02e44db0e4d02ade43f1767777e24d0a6a7abee89
MD5 30f33638264fec81af03fc5a9eddd072
SHA1 72d5d2da2ad261ec87c53d05b570c89e917e8ff1
SHA512 f5b0e836a2d963dc81c2640921f6bec66ea0a12fdda7549140c2cc1ab028f1c198d83fbb83b867770b061002573f23d6927a2e56b8724b85e5b84c042ab87c0e
MD5 SHA1 SHA512

Submit Download

memory/2544-54-0x0000000000B20000-0x0000000000C14000-memory.dmp

Download

memory/2544-55-0x000007FEF5870000-0x000007FEF625C000-memory.dmp

Download

memory/2544-62-0x000007FEF5870000-0x000007FEF625C000-memory.dmp

Download

memory/2904-61-0x00000000008A0000-0x0000000000994000-memory.dmp

Download

memory/2904-63-0x000007FEF5870000-0x000007FEF625C000-memory.dmp

Download

memory/2904-65-0x000000001AF30000-0x000000001AFB0000-memory.dmp

Download

memory/2904-491-0x000007FEF5870000-0x000007FEF625C000-memory.dmp

Download

memory/2904-492-0x000000001AF30000-0x000000001AFB0000-memory.dmp

Download