chaos | cb7c19b49efd25a4314129c9024c8e84ad9dd8acb45658ecf43c2d1fab775ca6

Resubmissions

25/01/2024, 01:57

240125-cdn9qadge6 10

24/01/2024, 15:56

240124-tdhwdadfb5 10

24/01/2024, 11:55

240124-n3eblahecn 10

Analysis

max time kernel
203s
max time network
125s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
25/01/2024, 01:57

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General

Target

cb7c19b49efd25a4314129c9024c8e84ad9dd8acb45658ecf43c2d1fab775ca6.exe
Size

3.4MB
MD5

f64a5c6fa180acaee93d4fac406c579b
SHA1

bacf88f16fe670ef2d87df154929c51b28b12263
SHA256

cb7c19b49efd25a4314129c9024c8e84ad9dd8acb45658ecf43c2d1fab775ca6
SHA512

01687ae73126dd6540308efa140e56c5410d5971415881a3747cf961c4abcd2e9be4dcd75181f865070bfb4e296617b8e3d61f55de747407a4c459e6a2bc0197
SSDEEP

24576:SvFnlgEsJu/SqXF3mh8uNFr95+CUNHEes4pyQquVexXCP7OigudxcAGZLqrDIjHM:QloJ0wtfSHO43ZpTLiADL

Score

10^/10

chaos evasion ransomware spyware stealer

Malware Config

Extracted

Path

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

Ransom Note

Oops, what happend? All of your files have been encrypted Your computer was infected with Frivinho Ransomware. Your files have been encrypted and you won't be able to decrypt them without our help. What can I do to get my files back? You can buy our special decryption software, this software will allow you to recover all of your data and remove the ransomware from your computer.The price for the software is $1,500. Payment can be made in Bitcoin or Robux. 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 informationAmount: 0.1473766 BTC Check this pastebin to get the my newest Bitcoin Adress: https://pastebin.com/raw/wZnisRDV And by cheking the pastebin, you can see more information about how you can pay.

URLs

https://pastebin.com/raw/wZnisRDV

Signatures

Chaos
Ransomware family first seen in June 2021.
ransomware chaos

Chaos Ransomware 3 IoCs

resource	yara_rule
behavioral1/memory/2280-0-0x0000000000FE0000-0x000000000134A000-memory.dmp	family_chaos
behavioral1/files/0x000a000000012243-5.dat	family_chaos
behavioral1/memory/1428-8-0x0000000000B70000-0x0000000000EDA000-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
2012	bcdedit.exe
2224	bcdedit.exe

Renames multiple (192) 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
844	wbadmin.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\PLS_READ_ME.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
1428	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\Public\Music\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Music\Sample Music\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Pictures\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Pictures\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Saved Games\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\Searches\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\desktop.ini	svchost.exe
File opened for modification	F:\$RECYCLE.BIN\S-1-5-21-3427588347-1492276948-3422228430-1000\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\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\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\Videos\Sample 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\Internet Explorer\Quick Launch\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Documents\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\Contacts\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\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\System Tools\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\Favorites\Links\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\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\Windows\Start Menu\Programs\Maintenance\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

Sets desktop wallpaper using registry 2 TTPs 1 IoCs

ransomware

Defacement

T1491

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3427588347-1492276948-3422228430-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\ixttbgd94.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
520	vssadmin.exe

Opens file in notepad (likely ransom note) 2 IoCs

ransomware

pid	Process
1616	NOTEPAD.EXE
1132	NOTEPAD.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
1428	svchost.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2280	cb7c19b49efd25a4314129c9024c8e84ad9dd8acb45658ecf43c2d1fab775ca6.exe
2280	cb7c19b49efd25a4314129c9024c8e84ad9dd8acb45658ecf43c2d1fab775ca6.exe
1428	svchost.exe
1428	svchost.exe
1428	svchost.exe
1428	svchost.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeDebugPrivilege	2280	cb7c19b49efd25a4314129c9024c8e84ad9dd8acb45658ecf43c2d1fab775ca6.exe
Token: SeDebugPrivilege	1428	svchost.exe
Token: SeBackupPrivilege	240	vssvc.exe
Token: SeRestorePrivilege	240	vssvc.exe
Token: SeAuditPrivilege	240	vssvc.exe
Token: SeIncreaseQuotaPrivilege	1424	WMIC.exe
Token: SeSecurityPrivilege	1424	WMIC.exe
Token: SeTakeOwnershipPrivilege	1424	WMIC.exe
Token: SeLoadDriverPrivilege	1424	WMIC.exe
Token: SeSystemProfilePrivilege	1424	WMIC.exe
Token: SeSystemtimePrivilege	1424	WMIC.exe
Token: SeProfSingleProcessPrivilege	1424	WMIC.exe
Token: SeIncBasePriorityPrivilege	1424	WMIC.exe
Token: SeCreatePagefilePrivilege	1424	WMIC.exe
Token: SeBackupPrivilege	1424	WMIC.exe
Token: SeRestorePrivilege	1424	WMIC.exe
Token: SeShutdownPrivilege	1424	WMIC.exe
Token: SeDebugPrivilege	1424	WMIC.exe
Token: SeSystemEnvironmentPrivilege	1424	WMIC.exe
Token: SeRemoteShutdownPrivilege	1424	WMIC.exe
Token: SeUndockPrivilege	1424	WMIC.exe
Token: SeManageVolumePrivilege	1424	WMIC.exe
Token: 33	1424	WMIC.exe
Token: 34	1424	WMIC.exe
Token: 35	1424	WMIC.exe
Token: SeIncreaseQuotaPrivilege	1424	WMIC.exe
Token: SeSecurityPrivilege	1424	WMIC.exe
Token: SeTakeOwnershipPrivilege	1424	WMIC.exe
Token: SeLoadDriverPrivilege	1424	WMIC.exe
Token: SeSystemProfilePrivilege	1424	WMIC.exe
Token: SeSystemtimePrivilege	1424	WMIC.exe
Token: SeProfSingleProcessPrivilege	1424	WMIC.exe
Token: SeIncBasePriorityPrivilege	1424	WMIC.exe
Token: SeCreatePagefilePrivilege	1424	WMIC.exe
Token: SeBackupPrivilege	1424	WMIC.exe
Token: SeRestorePrivilege	1424	WMIC.exe
Token: SeShutdownPrivilege	1424	WMIC.exe
Token: SeDebugPrivilege	1424	WMIC.exe
Token: SeSystemEnvironmentPrivilege	1424	WMIC.exe
Token: SeRemoteShutdownPrivilege	1424	WMIC.exe
Token: SeUndockPrivilege	1424	WMIC.exe
Token: SeManageVolumePrivilege	1424	WMIC.exe
Token: 33	1424	WMIC.exe
Token: 34	1424	WMIC.exe
Token: 35	1424	WMIC.exe
Token: SeBackupPrivilege	2332	wbengine.exe
Token: SeRestorePrivilege	2332	wbengine.exe
Token: SeSecurityPrivilege	2332	wbengine.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2280 wrote to memory of 1428	2280	cb7c19b49efd25a4314129c9024c8e84ad9dd8acb45658ecf43c2d1fab775ca6.exe	28
PID 2280 wrote to memory of 1428	2280	cb7c19b49efd25a4314129c9024c8e84ad9dd8acb45658ecf43c2d1fab775ca6.exe	28
PID 2280 wrote to memory of 1428	2280	cb7c19b49efd25a4314129c9024c8e84ad9dd8acb45658ecf43c2d1fab775ca6.exe	28
PID 1428 wrote to memory of 2344	1428	svchost.exe	30
PID 1428 wrote to memory of 2344	1428	svchost.exe	30
PID 1428 wrote to memory of 2344	1428	svchost.exe	30
PID 2344 wrote to memory of 520	2344	cmd.exe	32
PID 2344 wrote to memory of 520	2344	cmd.exe	32
PID 2344 wrote to memory of 520	2344	cmd.exe	32
PID 2344 wrote to memory of 1424	2344	cmd.exe	36
PID 2344 wrote to memory of 1424	2344	cmd.exe	36
PID 2344 wrote to memory of 1424	2344	cmd.exe	36
PID 1428 wrote to memory of 1812	1428	svchost.exe	38
PID 1428 wrote to memory of 1812	1428	svchost.exe	38
PID 1428 wrote to memory of 1812	1428	svchost.exe	38
PID 1812 wrote to memory of 2012	1812	cmd.exe	40
PID 1812 wrote to memory of 2012	1812	cmd.exe	40
PID 1812 wrote to memory of 2012	1812	cmd.exe	40
PID 1812 wrote to memory of 2224	1812	cmd.exe	41
PID 1812 wrote to memory of 2224	1812	cmd.exe	41
PID 1812 wrote to memory of 2224	1812	cmd.exe	41
PID 1428 wrote to memory of 1632	1428	svchost.exe	43
PID 1428 wrote to memory of 1632	1428	svchost.exe	43
PID 1428 wrote to memory of 1632	1428	svchost.exe	43
PID 1632 wrote to memory of 844	1632	cmd.exe	44
PID 1632 wrote to memory of 844	1632	cmd.exe	44
PID 1632 wrote to memory of 844	1632	cmd.exe	44
PID 1428 wrote to memory of 1616	1428	svchost.exe	50
PID 1428 wrote to memory of 1616	1428	svchost.exe	50
PID 1428 wrote to memory of 1616	1428	svchost.exe	50

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\cb7c19b49efd25a4314129c9024c8e84ad9dd8acb45658ecf43c2d1fab775ca6.exe
"C:\Users\Admin\AppData\Local\Temp\cb7c19b49efd25a4314129c9024c8e84ad9dd8acb45658ecf43c2d1fab775ca6.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2280
- 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:1428
- - 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:2344
  - - C:\Windows\system32\vssadmin.exe
      vssadmin delete shadows /all /quiet
      4⤵
      Interacts with shadow copies
      PID:520
  - - C:\Windows\System32\Wbem\WMIC.exe
      wmic shadowcopy delete
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:1424
- - 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:1812
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} bootstatuspolicy ignoreallfailures
      4⤵
      Modifies boot configuration data using bcdedit
      PID:2012
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} recoveryenabled no
      4⤵
      Modifies boot configuration data using bcdedit
      PID:2224
- - C:\Windows\System32\cmd.exe
    "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1632
  - - C:\Windows\system32\wbadmin.exe
      wbadmin delete catalog -quiet
      4⤵
      Deletes backup catalog
      PID:844
- - C:\Windows\system32\NOTEPAD.EXE
    "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\PLS_READ_ME.txt
    3⤵
    - Opens file in notepad (likely ransom note)
    PID:1616

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:240

C:\Windows\system32\wbengine.exe
"C:\Windows\system32\wbengine.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2332

C:\Windows\System32\vdsldr.exe
C:\Windows\System32\vdsldr.exe -Embedding
1⤵
PID:2148

C:\Windows\System32\vds.exe
C:\Windows\System32\vds.exe
1⤵
PID:476

C:\Windows\system32\NOTEPAD.EXE
"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Public\Desktop\PLS_READ_ME.txt
1⤵
- Opens file in notepad (likely ransom note)
PID:1132

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

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Downloads

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

Filesize
3.4MB

MD5
f64a5c6fa180acaee93d4fac406c579b

SHA1
bacf88f16fe670ef2d87df154929c51b28b12263

SHA256
cb7c19b49efd25a4314129c9024c8e84ad9dd8acb45658ecf43c2d1fab775ca6

SHA512
01687ae73126dd6540308efa140e56c5410d5971415881a3747cf961c4abcd2e9be4dcd75181f865070bfb4e296617b8e3d61f55de747407a4c459e6a2bc0197

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

Filesize
1019B

MD5
bf4f42180e1f6f0dc0dc8e5863fbfdff

SHA1
11ebaf5dd9d926371b27c9cdb86a0b7978deb383

SHA256
c22510ba329236dacd2e14be4c260eca7a8deb7433cb4291311232f37ee40bd7

SHA512
6004b7d2e6a6b4035363d25cb7291dc0be0c0070a8bbadea0c4275278fb4299e3348cb5aebb5d9870ff7986bf43c59983bb3aa1680f1b27fcad8c68064c09c16

Download Submit
memory/1428-9-0x000007FEF5550000-0x000007FEF5F3C000-memory.dmp

Filesize
9.9MB

Download
memory/1428-8-0x0000000000B70000-0x0000000000EDA000-memory.dmp

Filesize
3.4MB

Download
memory/1428-11-0x000000001B1B0000-0x000000001B230000-memory.dmp

Filesize
512KB

Download
memory/1428-449-0x000007FEF5550000-0x000007FEF5F3C000-memory.dmp

Filesize
9.9MB

Download
memory/1428-450-0x000000001B1B0000-0x000000001B230000-memory.dmp

Filesize
512KB

Download
memory/2280-0-0x0000000000FE0000-0x000000000134A000-memory.dmp

Filesize
3.4MB

Download
memory/2280-1-0x000007FEF5550000-0x000007FEF5F3C000-memory.dmp

Filesize
9.9MB

Download
memory/2280-7-0x000007FEF5550000-0x000007FEF5F3C000-memory.dmp

Filesize
9.9MB

Download