chaos | 7d306cc818d68effe14ccbebc60f2bb6de75a9e6fb2c840e5ffe575ebf98376b

Analysis

max time kernel
148s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
14-03-2024 19:30

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General

Target

Version 2.8.exe
Size

227KB
MD5

2ab8e3e63a7c847855ad80770dc2fd59
SHA1

dae76d78053f9699f4cb7ccae51df9d4b6202ac7
SHA256

7d306cc818d68effe14ccbebc60f2bb6de75a9e6fb2c840e5ffe575ebf98376b
SHA512

6a968d8c7e96c121b77a8bdc14e709fa79301d6f660d933e487008c09f6bdbf356ac4bfa31bab62f8dd69cfbc2e8c43a17ff86133a8d0c1cd4db343cf8366b31
SSDEEP

6144:yR9ixUkjCMkI3pwo9EkhtNK3OotdWV3vBLGC:oof+ewfkhsnWBvBj

Score

10^/10

chaos evasion ransomware spyware stealer

Malware Config

Extracted

Path

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

Ransom Note

All of your files have been encrypted! Warning Attempting to remove the software will corrupt your hard drives meaning no further use even when wiped. We simply charge $25 which is far cheaper than buying a new drive. Your computer was infected with a ransomware software. Your files have been encrypted and you won't be able to decrypt them without purchasing $25 BTC. What can I do to get my files back? You will send payment of $25 BTC to gain access to your files again, once payment is made after 3 confirmations on the blockchain (15 mins) your files will be restored and the software will un-install itself from your computer. How do I pay, where do I get Bitcoin? Purchasing Bitcoin varies from country to country, you are best advised to do a quick google search yourself to find out how to buy Bitcoin. Many of our customers have reported these sites to be fast and reliable: Coinmama - hxxps://www.coinmama.com Bitpanda - hxxps://www.bitpanda.com Payment will increase soon to double, be cooperative and your files will be released. Payment information Amount: 0.000385636 BTC Bitcoin Address: bc1qc76qr24pxnms9f93mytfg4dn7ztuvmje7g43dr

Signatures

Chaos
Ransomware family first seen in June 2021.
ransomware chaos

Chaos Ransomware 1 IoCs

resource	yara_rule
behavioral2/memory/4068-1-0x00000000010C0000-0x0000000001110000-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

Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs

ransomware evasion

Inhibit System Recovery

T1490

pid	Process
2220	bcdedit.exe
5112	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
5100	wbadmin.exe

Checks computer location settings 2 TTPs 2 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-513485977-2495024337-1260977654-1000\Control Panel\International\Geo\Nation	Version 2.8.exe
Key value queried	\REGISTRY\USER\S-1-5-21-513485977-2495024337-1260977654-1000\Control Panel\International\Geo\Nation	svchost.exe

Drops startup file 3 IoCs

description	ioc	Process
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
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.url	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2636	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\Contacts\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Pictures\Saved 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\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\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\System Tools\Desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Videos\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Links\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Documents\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessibility\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Pictures\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Music\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\Recent\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Music\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Pictures\Camera Roll\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\AccountPictures\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\desktop.ini	svchost.exe
File opened for modification	F:\$RECYCLE.BIN\S-1-5-21-513485977-2495024337-1260977654-1000\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\OneDrive\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\Administrative Tools\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Desktop\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\Desktop\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Downloads\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Saved Games\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\Internet Explorer\Quick Launch\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Libraries\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-1-5-21-513485977-2495024337-1260977654-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\p0nea8gix.jpg"	svchost.exe

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

System Information Discovery
T1082

Checks SCSI registry key(s) 3 TTPs 4 IoCs

SCSI information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_DADY&Prod_DADY_DVD-ROM\4&215468a5&0&010000\FriendlyName	vds.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\DISK&VEN_DADY&PROD_HARDDISK\4&215468A5&0&000000	vds.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000\FriendlyName	vds.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CDROM&VEN_DADY&PROD_DADY_DVD-ROM\4&215468A5&0&010000	vds.exe

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
2200	vssadmin.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-513485977-2495024337-1260977654-1000_Classes\Local Settings	svchost.exe

Opens file in notepad (likely ransom note) 2 IoCs

ransomware

pid	Process
2276	NOTEPAD.EXE
2100	NOTEPAD.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2636	svchost.exe

Suspicious behavior: EnumeratesProcesses 47 IoCs

pid	Process
4068	Version 2.8.exe
4068	Version 2.8.exe
4068	Version 2.8.exe
4068	Version 2.8.exe
4068	Version 2.8.exe
4068	Version 2.8.exe
4068	Version 2.8.exe
4068	Version 2.8.exe
4068	Version 2.8.exe
4068	Version 2.8.exe
4068	Version 2.8.exe
4068	Version 2.8.exe
4068	Version 2.8.exe
4068	Version 2.8.exe
4068	Version 2.8.exe
4068	Version 2.8.exe
4068	Version 2.8.exe
4068	Version 2.8.exe
4068	Version 2.8.exe
4068	Version 2.8.exe
4068	Version 2.8.exe
4068	Version 2.8.exe
4068	Version 2.8.exe
2636	svchost.exe
2636	svchost.exe
2636	svchost.exe
2636	svchost.exe
2636	svchost.exe
2636	svchost.exe
2636	svchost.exe
2636	svchost.exe
2636	svchost.exe
2636	svchost.exe
2636	svchost.exe
2636	svchost.exe
2636	svchost.exe
2636	svchost.exe
2636	svchost.exe
2636	svchost.exe
2636	svchost.exe
2636	svchost.exe
2636	svchost.exe
2636	svchost.exe
2636	svchost.exe
2636	svchost.exe
2636	svchost.exe
2636	svchost.exe

Suspicious use of AdjustPrivilegeToken 50 IoCs

description	pid	Process
Token: SeDebugPrivilege	4068	Version 2.8.exe
Token: SeDebugPrivilege	2636	svchost.exe
Token: SeBackupPrivilege	5080	vssvc.exe
Token: SeRestorePrivilege	5080	vssvc.exe
Token: SeAuditPrivilege	5080	vssvc.exe
Token: SeIncreaseQuotaPrivilege	5028	WMIC.exe
Token: SeSecurityPrivilege	5028	WMIC.exe
Token: SeTakeOwnershipPrivilege	5028	WMIC.exe
Token: SeLoadDriverPrivilege	5028	WMIC.exe
Token: SeSystemProfilePrivilege	5028	WMIC.exe
Token: SeSystemtimePrivilege	5028	WMIC.exe
Token: SeProfSingleProcessPrivilege	5028	WMIC.exe
Token: SeIncBasePriorityPrivilege	5028	WMIC.exe
Token: SeCreatePagefilePrivilege	5028	WMIC.exe
Token: SeBackupPrivilege	5028	WMIC.exe
Token: SeRestorePrivilege	5028	WMIC.exe
Token: SeShutdownPrivilege	5028	WMIC.exe
Token: SeDebugPrivilege	5028	WMIC.exe
Token: SeSystemEnvironmentPrivilege	5028	WMIC.exe
Token: SeRemoteShutdownPrivilege	5028	WMIC.exe
Token: SeUndockPrivilege	5028	WMIC.exe
Token: SeManageVolumePrivilege	5028	WMIC.exe
Token: 33	5028	WMIC.exe
Token: 34	5028	WMIC.exe
Token: 35	5028	WMIC.exe
Token: 36	5028	WMIC.exe
Token: SeIncreaseQuotaPrivilege	5028	WMIC.exe
Token: SeSecurityPrivilege	5028	WMIC.exe
Token: SeTakeOwnershipPrivilege	5028	WMIC.exe
Token: SeLoadDriverPrivilege	5028	WMIC.exe
Token: SeSystemProfilePrivilege	5028	WMIC.exe
Token: SeSystemtimePrivilege	5028	WMIC.exe
Token: SeProfSingleProcessPrivilege	5028	WMIC.exe
Token: SeIncBasePriorityPrivilege	5028	WMIC.exe
Token: SeCreatePagefilePrivilege	5028	WMIC.exe
Token: SeBackupPrivilege	5028	WMIC.exe
Token: SeRestorePrivilege	5028	WMIC.exe
Token: SeShutdownPrivilege	5028	WMIC.exe
Token: SeDebugPrivilege	5028	WMIC.exe
Token: SeSystemEnvironmentPrivilege	5028	WMIC.exe
Token: SeRemoteShutdownPrivilege	5028	WMIC.exe
Token: SeUndockPrivilege	5028	WMIC.exe
Token: SeManageVolumePrivilege	5028	WMIC.exe
Token: 33	5028	WMIC.exe
Token: 34	5028	WMIC.exe
Token: 35	5028	WMIC.exe
Token: 36	5028	WMIC.exe
Token: SeBackupPrivilege	3996	wbengine.exe
Token: SeRestorePrivilege	3996	wbengine.exe
Token: SeSecurityPrivilege	3996	wbengine.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 4068 wrote to memory of 2636	4068	Version 2.8.exe	91
PID 4068 wrote to memory of 2636	4068	Version 2.8.exe	91
PID 2636 wrote to memory of 4884	2636	svchost.exe	92
PID 2636 wrote to memory of 4884	2636	svchost.exe	92
PID 4884 wrote to memory of 2200	4884	cmd.exe	94
PID 4884 wrote to memory of 2200	4884	cmd.exe	94
PID 4884 wrote to memory of 5028	4884	cmd.exe	97
PID 4884 wrote to memory of 5028	4884	cmd.exe	97
PID 2636 wrote to memory of 376	2636	svchost.exe	100
PID 2636 wrote to memory of 376	2636	svchost.exe	100
PID 376 wrote to memory of 2220	376	cmd.exe	102
PID 376 wrote to memory of 2220	376	cmd.exe	102
PID 376 wrote to memory of 5112	376	cmd.exe	103
PID 376 wrote to memory of 5112	376	cmd.exe	103
PID 2636 wrote to memory of 3556	2636	svchost.exe	104
PID 2636 wrote to memory of 3556	2636	svchost.exe	104
PID 3556 wrote to memory of 5100	3556	cmd.exe	106
PID 3556 wrote to memory of 5100	3556	cmd.exe	106
PID 2636 wrote to memory of 2276	2636	svchost.exe	112
PID 2636 wrote to memory of 2276	2636	svchost.exe	112

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\Version 2.8.exe
"C:\Users\Admin\AppData\Local\Temp\Version 2.8.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4068
- C:\Users\Admin\AppData\Roaming\svchost.exe
  "C:\Users\Admin\AppData\Roaming\svchost.exe"
  2⤵
  - Checks computer location settings
  - Drops startup file
  - Executes dropped EXE
  - Drops desktop.ini file(s)
  - Sets desktop wallpaper using registry
  - Modifies registry class
  - Suspicious behavior: AddClipboardFormatListener
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2636
- - 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:4884
  - - C:\Windows\system32\vssadmin.exe
      vssadmin delete shadows /all /quiet
      4⤵
      Interacts with shadow copies
      PID:2200
  - - C:\Windows\System32\Wbem\WMIC.exe
      wmic shadowcopy delete
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:5028
- - 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:376
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} bootstatuspolicy ignoreallfailures
      4⤵
      Modifies boot configuration data using bcdedit
      PID:2220
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} recoveryenabled no
      4⤵
      Modifies boot configuration data using bcdedit
      PID:5112
- - C:\Windows\System32\cmd.exe
    "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:3556
  - - C:\Windows\system32\wbadmin.exe
      wbadmin delete catalog -quiet
      4⤵
      Deletes backup catalog
      PID:5100
- - 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:2276

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:5080

C:\Windows\system32\wbengine.exe
"C:\Windows\system32\wbengine.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:3996

C:\Windows\System32\vdsldr.exe
C:\Windows\System32\vdsldr.exe -Embedding
1⤵
PID:3136

C:\Windows\System32\vds.exe
C:\Windows\System32\vds.exe
1⤵
- Checks SCSI registry key(s)
PID:2760

C:\Windows\system32\NOTEPAD.EXE
"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Desktop\EditDisconnect.txt
1⤵
- Opens file in notepad (likely ransom note)
PID:2100

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

Peripheral Device Discovery

T1120

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
227KB

MD5
2ab8e3e63a7c847855ad80770dc2fd59

SHA1
dae76d78053f9699f4cb7ccae51df9d4b6202ac7

SHA256
7d306cc818d68effe14ccbebc60f2bb6de75a9e6fb2c840e5ffe575ebf98376b

SHA512
6a968d8c7e96c121b77a8bdc14e709fa79301d6f660d933e487008c09f6bdbf356ac4bfa31bab62f8dd69cfbc2e8c43a17ff86133a8d0c1cd4db343cf8366b31

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

Filesize
1KB

MD5
ea03cbb2fdf2dc96252b579612602225

SHA1
ac9ceff3c368f7409b9a7201f62fa92eded4da51

SHA256
e4f0c335d1ffc3ed4a32ae4aee294c9652f67a765fbaaad1f90e0540d25ed565

SHA512
1388a3f740f84541f8a8c0298bfe8b71f03d86a71174f97a68edcb4bdca0f467d6823b94314fa54547451c3ec4f6bc2228d74bf7537acf7c2dfb9f5a2d398051

Download Submit
memory/2636-16-0x00007FFF3CC30000-0x00007FFF3D6F1000-memory.dmp

Filesize
10.8MB

Download
memory/2636-70-0x00007FFF3CC30000-0x00007FFF3D6F1000-memory.dmp

Filesize
10.8MB

Download
memory/4068-0-0x00000000008E0000-0x0000000000920000-memory.dmp

Filesize
256KB

Download
memory/4068-1-0x00000000010C0000-0x0000000001110000-memory.dmp

Filesize
320KB

Download
memory/4068-2-0x00007FFF3CC30000-0x00007FFF3D6F1000-memory.dmp

Filesize
10.8MB

Download
memory/4068-15-0x00007FFF3CC30000-0x00007FFF3D6F1000-memory.dmp

Filesize
10.8MB

Download