chaos | 99f9ffc5e0e9769e9be3c184b828ff8bf4d63cade2492aca281cf3f30891bac0

Analysis

max time kernel
122s
max time network
124s
platform
windows7_x64
resource
win7-en-20211208
submitted
01-01-2022 16:53

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General

Target

99f9ffc5e0e9769e9be3c184b828ff8bf4d63cade2492aca281cf3f30891bac0.bin.exe
Size

101KB
MD5

ca6646d85b756664c2c1eb97a91bb8a1
SHA1

24b22ffbd61b3533a25fef787bacf3ecdca973ea
SHA256

99f9ffc5e0e9769e9be3c184b828ff8bf4d63cade2492aca281cf3f30891bac0
SHA512

d285f0c5a90d80615e74cfd228a221a629721051269078b49b696263c633623e3430aa1d1c1ad0c37454574eac1487641af895b1715bc64647bd08118b46310e

Score

10^/10

chaos evasion ransomware spyware stealer

Malware Config

Extracted

Path

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

Ransom Note

Attention! All of your files have been encrypted Your computer was infected with WANNABE 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 $26.65. Payment can be made in Bitcoin only. 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 - https://www.coinmama.com or Bitpanda - https://www.bitpanda.com Payment informationAmount: 0.00043 BTC Bitcoin Address: 18vhBpgPhZrjJkbuT2ZyUXAnJavaJcTwEd If you're done paying the demand just send a proof that you have done paying the exact amount at email address provided below in order for us to send to your email the decryption software. Email Address: [email protected]

Emails

[email protected]

Wallets

18vhBpgPhZrjJkbuT2ZyUXAnJavaJcTwEd

URLs

https://www.coinmama.com

https://www.bitpanda.com

Signatures

Chaos
Ransomware family first seen in June 2021.
ransomware chaos

Chaos Ransomware 6 IoCs

resource	yara_rule
behavioral1/memory/1668-55-0x0000000000FA0000-0x0000000000FC0000-memory.dmp	family_chaos
behavioral1/memory/1668-56-0x0000000000FA0000-0x0000000000FC0000-memory.dmp	family_chaos
behavioral1/files/0x00080000000121ef-58.dat	family_chaos
behavioral1/files/0x00080000000121ef-59.dat	family_chaos
behavioral1/memory/1848-60-0x00000000013C0000-0x00000000013E0000-memory.dmp	family_chaos
behavioral1/memory/1848-61-0x00000000013C0000-0x00000000013E0000-memory.dmp	family_chaos

Deletes shadow copies 2 TTPs
Ransomware often targets backup files to inhibit system recovery.
ransomware

File Deletion
T1107

Inhibit System Recovery
T1490

Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs

ransomware evasion

Inhibit System Recovery

T1490

pid	Process
896	bcdedit.exe
892	bcdedit.exe

Deletes backup catalog 3 TTPs 1 IoCs

Uses wbadmin.exe to inhibit system recovery.

ransomware

Command-Line Interface

T1059

File Deletion

T1107

Inhibit System Recovery

T1490

pid	Process
1596	wbadmin.exe

Executes dropped EXE 1 IoCs

pid	Process
1848	sdf51ewxzv24d54fg.exe

Modifies extensions of user files 5 IoCs

Ransomware generally changes the extension on encrypted files.

ransomware

description	ioc	Process
File renamed	C:\Users\Admin\Pictures\RestoreCompare.raw => C:\Users\Admin\Pictures\RestoreCompare.raw.WNBE	sdf51ewxzv24d54fg.exe
File renamed	C:\Users\Admin\Pictures\SearchConnect.png => C:\Users\Admin\Pictures\SearchConnect.png.WNBE	sdf51ewxzv24d54fg.exe
File renamed	C:\Users\Admin\Pictures\ClearSave.tif => C:\Users\Admin\Pictures\ClearSave.tif.WNBE	sdf51ewxzv24d54fg.exe
File renamed	C:\Users\Admin\Pictures\InstallConvertTo.png => C:\Users\Admin\Pictures\InstallConvertTo.png.WNBE	sdf51ewxzv24d54fg.exe
File renamed	C:\Users\Admin\Pictures\RedoLimit.tif => C:\Users\Admin\Pictures\RedoLimit.tif.WNBE	sdf51ewxzv24d54fg.exe

Drops startup file 3 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\sdf51ewxzv24d54fg.url	sdf51ewxzv24d54fg.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\desktop.ini	sdf51ewxzv24d54fg.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\read_it.txt	sdf51ewxzv24d54fg.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
T1081

Drops desktop.ini file(s) 33 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\Favorites\Links\desktop.ini	sdf51ewxzv24d54fg.exe
File opened for modification	C:\Users\Admin\Searches\desktop.ini	sdf51ewxzv24d54fg.exe
File opened for modification	C:\Users\Admin\Videos\desktop.ini	sdf51ewxzv24d54fg.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\desktop.ini	sdf51ewxzv24d54fg.exe
File opened for modification	C:\Users\Public\Music\desktop.ini	sdf51ewxzv24d54fg.exe
File opened for modification	C:\Users\Public\Desktop\desktop.ini	sdf51ewxzv24d54fg.exe
File opened for modification	C:\Users\Admin\Pictures\desktop.ini	sdf51ewxzv24d54fg.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\desktop.ini	sdf51ewxzv24d54fg.exe
File opened for modification	C:\Users\Public\Videos\Sample Videos\desktop.ini	sdf51ewxzv24d54fg.exe
File opened for modification	C:\Users\Admin\Contacts\desktop.ini	sdf51ewxzv24d54fg.exe
File opened for modification	C:\Users\Admin\Documents\desktop.ini	sdf51ewxzv24d54fg.exe
File opened for modification	C:\Users\Admin\Links\desktop.ini	sdf51ewxzv24d54fg.exe
File opened for modification	C:\Users\Admin\Favorites\desktop.ini	sdf51ewxzv24d54fg.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\desktop.ini	sdf51ewxzv24d54fg.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\desktop.ini	sdf51ewxzv24d54fg.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Desktop.ini	sdf51ewxzv24d54fg.exe
File opened for modification	C:\Users\Public\Pictures\Sample Pictures\desktop.ini	sdf51ewxzv24d54fg.exe
File opened for modification	C:\Users\Public\Music\Sample Music\desktop.ini	sdf51ewxzv24d54fg.exe
File opened for modification	C:\Users\Admin\Desktop\desktop.ini	sdf51ewxzv24d54fg.exe
File opened for modification	C:\Users\Admin\Favorites\Links for United States\desktop.ini	sdf51ewxzv24d54fg.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\SendTo\Desktop.ini	sdf51ewxzv24d54fg.exe
File opened for modification	C:\Users\Public\Documents\desktop.ini	sdf51ewxzv24d54fg.exe
File opened for modification	C:\Users\Admin\Saved Games\desktop.ini	sdf51ewxzv24d54fg.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar\desktop.ini	sdf51ewxzv24d54fg.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Libraries\desktop.ini	sdf51ewxzv24d54fg.exe
File opened for modification	C:\Users\Public\Videos\desktop.ini	sdf51ewxzv24d54fg.exe
File opened for modification	C:\Users\Admin\Music\desktop.ini	sdf51ewxzv24d54fg.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\System Tools\Desktop.ini	sdf51ewxzv24d54fg.exe
File opened for modification	C:\Users\Public\Pictures\desktop.ini	sdf51ewxzv24d54fg.exe
File opened for modification	C:\Users\Admin\Downloads\desktop.ini	sdf51ewxzv24d54fg.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Accessibility\Desktop.ini	sdf51ewxzv24d54fg.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Administrative Tools\desktop.ini	sdf51ewxzv24d54fg.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Maintenance\Desktop.ini	sdf51ewxzv24d54fg.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-1-5-21-2329389628-4064185017-3901522362-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\0u36xsbdn.jpg"	sdf51ewxzv24d54fg.exe

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

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

T1107

Inhibit System Recovery

T1490

pid	Process
336	vssadmin.exe

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
1388	NOTEPAD.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
1848	sdf51ewxzv24d54fg.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
1668	99f9ffc5e0e9769e9be3c184b828ff8bf4d63cade2492aca281cf3f30891bac0.bin.exe
1668	99f9ffc5e0e9769e9be3c184b828ff8bf4d63cade2492aca281cf3f30891bac0.bin.exe
1848	sdf51ewxzv24d54fg.exe
1848	sdf51ewxzv24d54fg.exe
1848	sdf51ewxzv24d54fg.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeDebugPrivilege	1668	99f9ffc5e0e9769e9be3c184b828ff8bf4d63cade2492aca281cf3f30891bac0.bin.exe
Token: SeDebugPrivilege	1848	sdf51ewxzv24d54fg.exe
Token: SeBackupPrivilege	816	vssvc.exe
Token: SeRestorePrivilege	816	vssvc.exe
Token: SeAuditPrivilege	816	vssvc.exe
Token: SeIncreaseQuotaPrivilege	1864	WMIC.exe
Token: SeSecurityPrivilege	1864	WMIC.exe
Token: SeTakeOwnershipPrivilege	1864	WMIC.exe
Token: SeLoadDriverPrivilege	1864	WMIC.exe
Token: SeSystemProfilePrivilege	1864	WMIC.exe
Token: SeSystemtimePrivilege	1864	WMIC.exe
Token: SeProfSingleProcessPrivilege	1864	WMIC.exe
Token: SeIncBasePriorityPrivilege	1864	WMIC.exe
Token: SeCreatePagefilePrivilege	1864	WMIC.exe
Token: SeBackupPrivilege	1864	WMIC.exe
Token: SeRestorePrivilege	1864	WMIC.exe
Token: SeShutdownPrivilege	1864	WMIC.exe
Token: SeDebugPrivilege	1864	WMIC.exe
Token: SeSystemEnvironmentPrivilege	1864	WMIC.exe
Token: SeRemoteShutdownPrivilege	1864	WMIC.exe
Token: SeUndockPrivilege	1864	WMIC.exe
Token: SeManageVolumePrivilege	1864	WMIC.exe
Token: 33	1864	WMIC.exe
Token: 34	1864	WMIC.exe
Token: 35	1864	WMIC.exe
Token: SeIncreaseQuotaPrivilege	1864	WMIC.exe
Token: SeSecurityPrivilege	1864	WMIC.exe
Token: SeTakeOwnershipPrivilege	1864	WMIC.exe
Token: SeLoadDriverPrivilege	1864	WMIC.exe
Token: SeSystemProfilePrivilege	1864	WMIC.exe
Token: SeSystemtimePrivilege	1864	WMIC.exe
Token: SeProfSingleProcessPrivilege	1864	WMIC.exe
Token: SeIncBasePriorityPrivilege	1864	WMIC.exe
Token: SeCreatePagefilePrivilege	1864	WMIC.exe
Token: SeBackupPrivilege	1864	WMIC.exe
Token: SeRestorePrivilege	1864	WMIC.exe
Token: SeShutdownPrivilege	1864	WMIC.exe
Token: SeDebugPrivilege	1864	WMIC.exe
Token: SeSystemEnvironmentPrivilege	1864	WMIC.exe
Token: SeRemoteShutdownPrivilege	1864	WMIC.exe
Token: SeUndockPrivilege	1864	WMIC.exe
Token: SeManageVolumePrivilege	1864	WMIC.exe
Token: 33	1864	WMIC.exe
Token: 34	1864	WMIC.exe
Token: 35	1864	WMIC.exe
Token: SeBackupPrivilege	1628	wbengine.exe
Token: SeRestorePrivilege	1628	wbengine.exe
Token: SeSecurityPrivilege	1628	wbengine.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1668 wrote to memory of 1848	1668	99f9ffc5e0e9769e9be3c184b828ff8bf4d63cade2492aca281cf3f30891bac0.bin.exe	27
PID 1668 wrote to memory of 1848	1668	99f9ffc5e0e9769e9be3c184b828ff8bf4d63cade2492aca281cf3f30891bac0.bin.exe	27
PID 1668 wrote to memory of 1848	1668	99f9ffc5e0e9769e9be3c184b828ff8bf4d63cade2492aca281cf3f30891bac0.bin.exe	27
PID 1848 wrote to memory of 744	1848	sdf51ewxzv24d54fg.exe	29
PID 1848 wrote to memory of 744	1848	sdf51ewxzv24d54fg.exe	29
PID 1848 wrote to memory of 744	1848	sdf51ewxzv24d54fg.exe	29
PID 744 wrote to memory of 336	744	cmd.exe	31
PID 744 wrote to memory of 336	744	cmd.exe	31
PID 744 wrote to memory of 336	744	cmd.exe	31
PID 744 wrote to memory of 1864	744	cmd.exe	34
PID 744 wrote to memory of 1864	744	cmd.exe	34
PID 744 wrote to memory of 1864	744	cmd.exe	34
PID 1848 wrote to memory of 860	1848	sdf51ewxzv24d54fg.exe	36
PID 1848 wrote to memory of 860	1848	sdf51ewxzv24d54fg.exe	36
PID 1848 wrote to memory of 860	1848	sdf51ewxzv24d54fg.exe	36
PID 860 wrote to memory of 896	860	cmd.exe	38
PID 860 wrote to memory of 896	860	cmd.exe	38
PID 860 wrote to memory of 896	860	cmd.exe	38
PID 860 wrote to memory of 892	860	cmd.exe	39
PID 860 wrote to memory of 892	860	cmd.exe	39
PID 860 wrote to memory of 892	860	cmd.exe	39
PID 1848 wrote to memory of 2044	1848	sdf51ewxzv24d54fg.exe	40
PID 1848 wrote to memory of 2044	1848	sdf51ewxzv24d54fg.exe	40
PID 1848 wrote to memory of 2044	1848	sdf51ewxzv24d54fg.exe	40
PID 2044 wrote to memory of 1596	2044	cmd.exe	42
PID 2044 wrote to memory of 1596	2044	cmd.exe	42
PID 2044 wrote to memory of 1596	2044	cmd.exe	42
PID 1848 wrote to memory of 1388	1848	sdf51ewxzv24d54fg.exe	46
PID 1848 wrote to memory of 1388	1848	sdf51ewxzv24d54fg.exe	46
PID 1848 wrote to memory of 1388	1848	sdf51ewxzv24d54fg.exe	46

C:\Users\Admin\AppData\Local\Temp\99f9ffc5e0e9769e9be3c184b828ff8bf4d63cade2492aca281cf3f30891bac0.bin.exe
"C:\Users\Admin\AppData\Local\Temp\99f9ffc5e0e9769e9be3c184b828ff8bf4d63cade2492aca281cf3f30891bac0.bin.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1668
- C:\Users\Admin\AppData\Roaming\sdf51ewxzv24d54fg.exe
  "C:\Users\Admin\AppData\Roaming\sdf51ewxzv24d54fg.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:1848
- - 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:744
  - - C:\Windows\system32\vssadmin.exe
      vssadmin delete shadows /all /quiet
      4⤵
      Interacts with shadow copies
      PID:336
  - - C:\Windows\System32\Wbem\WMIC.exe
      wmic shadowcopy delete
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:1864
- - 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:860
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} bootstatuspolicy ignoreallfailures
      4⤵
      Modifies boot configuration data using bcdedit
      PID:896
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} recoveryenabled no
      4⤵
      Modifies boot configuration data using bcdedit
      PID:892
- - C:\Windows\System32\cmd.exe
    "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2044
  - - C:\Windows\system32\wbadmin.exe
      wbadmin delete catalog -quiet
      4⤵
      Deletes backup catalog
      PID:1596
- - 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:1388

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:816

C:\Windows\system32\wbengine.exe
"C:\Windows\system32\wbengine.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1628

C:\Windows\System32\vdsldr.exe
C:\Windows\System32\vdsldr.exe -Embedding
1⤵
PID:864

C:\Windows\System32\vds.exe
C:\Windows\System32\vds.exe
1⤵
PID:1076

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Command-Line Interface

T1059

Persistence

Privilege Escalation

Defense Evasion

File Deletion

T1107

Modify Registry

T1112

Credential Access

Credentials in Files

T1081

Discovery

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

memory/1596-71-0x000007FEFC3A1000-0x000007FEFC3A3000-memory.dmp

Filesize
8KB

Download
memory/1668-55-0x0000000000FA0000-0x0000000000FC0000-memory.dmp

Filesize
128KB

Download
memory/1668-56-0x0000000000FA0000-0x0000000000FC0000-memory.dmp

Filesize
128KB

Download
memory/1848-60-0x00000000013C0000-0x00000000013E0000-memory.dmp

Filesize
128KB

Download
memory/1848-62-0x000000001ADF0000-0x000000001ADF2000-memory.dmp

Filesize
8KB

Download
memory/1848-61-0x00000000013C0000-0x00000000013E0000-memory.dmp

Filesize
128KB

Download