chaos | b1968b4be3f82fc26b1e2decdcb8f532915aed847603aeeaf254722bdd411d26

Resubmissions

16-03-2024 17:17

240316-vtswysfd2y 10

16-03-2024 15:31

240316-syg9xafg39 10

15-03-2024 08:15

240315-j5rmgsbg5z 10

Analysis

max time kernel
122s
max time network
126s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
15-03-2024 08:15

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General

Target

067f997e6fe9eac1a47d9a54d6dd22414721ad895e6352714a11779de8d66540.exe
Size

24KB
MD5

3aea97ef58d132d994d6160ae232c6e7
SHA1

de2146322b6a533ccf5ace0f1edcb6cf92d34179
SHA256

067f997e6fe9eac1a47d9a54d6dd22414721ad895e6352714a11779de8d66540
SHA512

a48d3ab7b7e35d1f24f1319831ffdc1c2dc9f4ededa0007684ff2515edf39e727915eafc124fa752082b0e1534ddf37a2ed12be18d9aadc72391b57cf5b6f9c4
SSDEEP

384:Y3Mg/bqo2CUTermpEdwdcJAr91Ci7IJvOe2:mqo2Yrmpfd0Ar9xame2

Score

10^/10

chaos evasion ransomware spyware stealer

Malware Config

Extracted

Path

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

Ransom Note

READ THE FOLLOWING VERY CAREFULLY Your computer has become infected with a ransomware virus. Every file and folder has been encrypted with a military grade encryption algorithm and you will not be able to decrypt anything without our help. If you want all your files back to normal like this never happened you simply have to buy our decryption software by sending Bitcoin to the below specified BTC Wallet Address in which you will immediately receive the program and a special decryption key. Within 10 minutes of using the program all of you files and folders will be back to normal, and your system will be completely unencrypted and void of the ransomware virus. The price for the software will only cost you 0.1474 Bitcoin and Payment can be made in Bitcoin ONLY. If you have never used cryptocurrency before, it is very simple, just read about it on official website www.bitcoin.org or doing a simple google search on how to buy and send bitcoin. You now have exactly 36 hours to send the payment to the below Bitcoin Wallet Address or you will never be able to retrieve your files again, and everything will be forever encrypted and unrecoverable. AMOUNT: 0.1474 BTC BITCOIN ADDRESS WHERE YOU SEND IT: bc1qjt25ualzd0j0lvj0pq7mfrh23n9klnk29k22tf

Signatures

Chaos
Ransomware family first seen in June 2021.
ransomware chaos

Chaos Ransomware 3 IoCs

resource	yara_rule
behavioral1/memory/2884-0-0x0000000000FC0000-0x0000000000FCC000-memory.dmp	family_chaos
behavioral1/files/0x000b000000012267-5.dat	family_chaos
behavioral1/memory/2092-7-0x0000000000BB0000-0x0000000000BBC000-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
2232	bcdedit.exe
2236	bcdedit.exe

Renames multiple (191) 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
2136	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
2092	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\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\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\Windows\Libraries\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\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\Public\Videos\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Contacts\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Favorites\Links\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\Desktop\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\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-1-5-21-3787592910-3720486031-2929222812-1000\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Pictures\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\Start Menu\Programs\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\Maintenance\Desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Documents\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Links\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\Public\Music\Sample 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\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\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Administrative Tools\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\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

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
1076	vssadmin.exe

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
1668	NOTEPAD.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2092	svchost.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2884	067f997e6fe9eac1a47d9a54d6dd22414721ad895e6352714a11779de8d66540.exe
2884	067f997e6fe9eac1a47d9a54d6dd22414721ad895e6352714a11779de8d66540.exe
2092	svchost.exe
2092	svchost.exe
2092	svchost.exe
2092	svchost.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeDebugPrivilege	2884	067f997e6fe9eac1a47d9a54d6dd22414721ad895e6352714a11779de8d66540.exe
Token: SeDebugPrivilege	2092	svchost.exe
Token: SeBackupPrivilege	1084	vssvc.exe
Token: SeRestorePrivilege	1084	vssvc.exe
Token: SeAuditPrivilege	1084	vssvc.exe
Token: SeIncreaseQuotaPrivilege	1336	WMIC.exe
Token: SeSecurityPrivilege	1336	WMIC.exe
Token: SeTakeOwnershipPrivilege	1336	WMIC.exe
Token: SeLoadDriverPrivilege	1336	WMIC.exe
Token: SeSystemProfilePrivilege	1336	WMIC.exe
Token: SeSystemtimePrivilege	1336	WMIC.exe
Token: SeProfSingleProcessPrivilege	1336	WMIC.exe
Token: SeIncBasePriorityPrivilege	1336	WMIC.exe
Token: SeCreatePagefilePrivilege	1336	WMIC.exe
Token: SeBackupPrivilege	1336	WMIC.exe
Token: SeRestorePrivilege	1336	WMIC.exe
Token: SeShutdownPrivilege	1336	WMIC.exe
Token: SeDebugPrivilege	1336	WMIC.exe
Token: SeSystemEnvironmentPrivilege	1336	WMIC.exe
Token: SeRemoteShutdownPrivilege	1336	WMIC.exe
Token: SeUndockPrivilege	1336	WMIC.exe
Token: SeManageVolumePrivilege	1336	WMIC.exe
Token: 33	1336	WMIC.exe
Token: 34	1336	WMIC.exe
Token: 35	1336	WMIC.exe
Token: SeIncreaseQuotaPrivilege	1336	WMIC.exe
Token: SeSecurityPrivilege	1336	WMIC.exe
Token: SeTakeOwnershipPrivilege	1336	WMIC.exe
Token: SeLoadDriverPrivilege	1336	WMIC.exe
Token: SeSystemProfilePrivilege	1336	WMIC.exe
Token: SeSystemtimePrivilege	1336	WMIC.exe
Token: SeProfSingleProcessPrivilege	1336	WMIC.exe
Token: SeIncBasePriorityPrivilege	1336	WMIC.exe
Token: SeCreatePagefilePrivilege	1336	WMIC.exe
Token: SeBackupPrivilege	1336	WMIC.exe
Token: SeRestorePrivilege	1336	WMIC.exe
Token: SeShutdownPrivilege	1336	WMIC.exe
Token: SeDebugPrivilege	1336	WMIC.exe
Token: SeSystemEnvironmentPrivilege	1336	WMIC.exe
Token: SeRemoteShutdownPrivilege	1336	WMIC.exe
Token: SeUndockPrivilege	1336	WMIC.exe
Token: SeManageVolumePrivilege	1336	WMIC.exe
Token: 33	1336	WMIC.exe
Token: 34	1336	WMIC.exe
Token: 35	1336	WMIC.exe
Token: SeBackupPrivilege	2864	wbengine.exe
Token: SeRestorePrivilege	2864	wbengine.exe
Token: SeSecurityPrivilege	2864	wbengine.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2884 wrote to memory of 2092	2884	067f997e6fe9eac1a47d9a54d6dd22414721ad895e6352714a11779de8d66540.exe	28
PID 2884 wrote to memory of 2092	2884	067f997e6fe9eac1a47d9a54d6dd22414721ad895e6352714a11779de8d66540.exe	28
PID 2884 wrote to memory of 2092	2884	067f997e6fe9eac1a47d9a54d6dd22414721ad895e6352714a11779de8d66540.exe	28
PID 2092 wrote to memory of 2740	2092	svchost.exe	31
PID 2092 wrote to memory of 2740	2092	svchost.exe	31
PID 2092 wrote to memory of 2740	2092	svchost.exe	31
PID 2740 wrote to memory of 1076	2740	cmd.exe	33
PID 2740 wrote to memory of 1076	2740	cmd.exe	33
PID 2740 wrote to memory of 1076	2740	cmd.exe	33
PID 2740 wrote to memory of 1336	2740	cmd.exe	36
PID 2740 wrote to memory of 1336	2740	cmd.exe	36
PID 2740 wrote to memory of 1336	2740	cmd.exe	36
PID 2092 wrote to memory of 2916	2092	svchost.exe	38
PID 2092 wrote to memory of 2916	2092	svchost.exe	38
PID 2092 wrote to memory of 2916	2092	svchost.exe	38
PID 2916 wrote to memory of 2232	2916	cmd.exe	40
PID 2916 wrote to memory of 2232	2916	cmd.exe	40
PID 2916 wrote to memory of 2232	2916	cmd.exe	40
PID 2916 wrote to memory of 2236	2916	cmd.exe	41
PID 2916 wrote to memory of 2236	2916	cmd.exe	41
PID 2916 wrote to memory of 2236	2916	cmd.exe	41
PID 2092 wrote to memory of 1468	2092	svchost.exe	42
PID 2092 wrote to memory of 1468	2092	svchost.exe	42
PID 2092 wrote to memory of 1468	2092	svchost.exe	42
PID 1468 wrote to memory of 2136	1468	cmd.exe	44
PID 1468 wrote to memory of 2136	1468	cmd.exe	44
PID 1468 wrote to memory of 2136	1468	cmd.exe	44
PID 2092 wrote to memory of 1668	2092	svchost.exe	48
PID 2092 wrote to memory of 1668	2092	svchost.exe	48
PID 2092 wrote to memory of 1668	2092	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\067f997e6fe9eac1a47d9a54d6dd22414721ad895e6352714a11779de8d66540.exe
"C:\Users\Admin\AppData\Local\Temp\067f997e6fe9eac1a47d9a54d6dd22414721ad895e6352714a11779de8d66540.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2884
- 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)
  - Suspicious behavior: AddClipboardFormatListener
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2092
- - 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:2740
  - - C:\Windows\system32\vssadmin.exe
      vssadmin delete shadows /all /quiet
      4⤵
      Interacts with shadow copies
      PID:1076
  - - C:\Windows\System32\Wbem\WMIC.exe
      wmic shadowcopy delete
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:1336
- - 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:2916
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} bootstatuspolicy ignoreallfailures
      4⤵
      Modifies boot configuration data using bcdedit
      PID:2232
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} recoveryenabled no
      4⤵
      Modifies boot configuration data using bcdedit
      PID:2236
- - C:\Windows\System32\cmd.exe
    "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1468
  - - C:\Windows\system32\wbadmin.exe
      wbadmin delete catalog -quiet
      4⤵
      Deletes backup catalog
      PID:2136
- - 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:1668

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1084

C:\Windows\system32\wbengine.exe
"C:\Windows\system32\wbengine.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2864

C:\Windows\System32\vdsldr.exe
C:\Windows\System32\vdsldr.exe -Embedding
1⤵
PID:620

C:\Windows\System32\vds.exe
C:\Windows\System32\vds.exe
1⤵
PID:2368

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

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

Inhibit System Recovery

T1490

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\svchost.exe

Filesize
24KB

MD5
3aea97ef58d132d994d6160ae232c6e7

SHA1
de2146322b6a533ccf5ace0f1edcb6cf92d34179

SHA256
067f997e6fe9eac1a47d9a54d6dd22414721ad895e6352714a11779de8d66540

SHA512
a48d3ab7b7e35d1f24f1319831ffdc1c2dc9f4ededa0007684ff2515edf39e727915eafc124fa752082b0e1534ddf37a2ed12be18d9aadc72391b57cf5b6f9c4

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

Filesize
1KB

MD5
8b7c16186eda725a280ae9f7e7ea9b43

SHA1
a7bd3384999e829ccc4c828fc4511d6ef0228670

SHA256
f59448977db86356cffdf951cef0b2273f83641db68a8bd1f6170f8fb07ac44b

SHA512
77a985b454dde88b1c30ad61b0eb672edec45aa1e84310c9a9e06db4bd31b95b36b34fb5fb2560f07a3d4dcb06e932c969b51652770d719378dc15b448f43136

Download Submit
memory/2092-7-0x0000000000BB0000-0x0000000000BBC000-memory.dmp

Filesize
48KB

Download
memory/2092-9-0x000007FEF5A80000-0x000007FEF646C000-memory.dmp

Filesize
9.9MB

Download
memory/2092-11-0x000000001ABA0000-0x000000001AC20000-memory.dmp

Filesize
512KB

Download
memory/2092-445-0x000007FEF5A80000-0x000007FEF646C000-memory.dmp

Filesize
9.9MB

Download
memory/2092-446-0x000000001ABA0000-0x000000001AC20000-memory.dmp

Filesize
512KB

Download
memory/2884-0-0x0000000000FC0000-0x0000000000FCC000-memory.dmp

Filesize
48KB

Download
memory/2884-1-0x000007FEF5A80000-0x000007FEF646C000-memory.dmp

Filesize
9.9MB

Download
memory/2884-8-0x000007FEF5A80000-0x000007FEF646C000-memory.dmp

Filesize
9.9MB

Download