chaos | 3f5ade39f3658b6da93987f7ba7dba38d7d94096638ef9f3565790e6ab73eef7

Analysis

max time kernel
144s
max time network
120s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
29/04/2024, 13:26

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General

Target

2024-04-29_29fa75458106f03a11560ca466363129_chaos_destroyer_wannacry.exe
Size

22KB
MD5

29fa75458106f03a11560ca466363129
SHA1

89db6502c8170f260b48d80ee0ece3380ba77eb5
SHA256

3f5ade39f3658b6da93987f7ba7dba38d7d94096638ef9f3565790e6ab73eef7
SHA512

28a58b096f560ac4cd03b96f77f7e0cbe7e96c4fb56fb6758c3e4ff7304e3ae4e0db35570f69070c676e45143dedb7be50556bc80f38364400ea2d43bec99188
SSDEEP

384:j3Mg/bqo2uOv0tpDnqp+Ao4+X0Z/dJZr91C8OWh0et:Vqo2BDp+J4+kRrZr9hLyet

Score

10^/10

chaos evasion ransomware spyware stealer

Malware Config

Extracted

Path

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

Ransom Note

!!! ATTENTION !!! Your device has been locked by our ransomware. To regain access to your device and your files, you must pay a ransom of : $100 USD in Bitcoin. Bitcoin Address: bc1qgk07vhn53ws7khy3840gjjvlw7qgzftfjgweq2 Once payment is made, please send an email to [email protected] with the transaction ID as proof of payment. Upon confirmation of your payment, you will receive instructions on how to unlock your device. !!! ATTENTION !!!

Emails

[email protected]

Signatures

Chaos
Ransomware family first seen in June 2021.
ransomware chaos

Chaos Ransomware 3 IoCs

resource	yara_rule
behavioral1/memory/1912-0-0x0000000001130000-0x000000000113C000-memory.dmp	family_chaos
behavioral1/files/0x0004000000004ed7-6.dat	family_chaos
behavioral1/memory/888-8-0x0000000001310000-0x000000000131C000-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

Detects command variations typically used by ransomware 3 IoCs

resource	yara_rule
behavioral1/memory/1912-0-0x0000000001130000-0x000000000113C000-memory.dmp	INDICATOR_SUSPICIOUS_GENRansomware
behavioral1/files/0x0004000000004ed7-6.dat	INDICATOR_SUSPICIOUS_GENRansomware
behavioral1/memory/888-8-0x0000000001310000-0x000000000131C000-memory.dmp	INDICATOR_SUSPICIOUS_GENRansomware

Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs

ransomware evasion

Inhibit System Recovery

T1490

pid	Process
1708	bcdedit.exe
1700	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
1296	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
888	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\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\Accessories\Accessibility\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\Documents\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\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\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\Public\Desktop\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Desktop\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Contacts\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Music\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	F:\$RECYCLE.BIN\S-1-5-21-2297530677-1229052932-2803917579-1000\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\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\Accessories\System Tools\Desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Pictures\Sample Pictures\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Favorites\Links\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\SendTo\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\AppData\Roaming\Microsoft\Windows\Recent\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\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\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Administrative 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\Music\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
1624	vssadmin.exe

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
1992	NOTEPAD.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
888	svchost.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
1912	2024-04-29_29fa75458106f03a11560ca466363129_chaos_destroyer_wannacry.exe
1912	2024-04-29_29fa75458106f03a11560ca466363129_chaos_destroyer_wannacry.exe
888	svchost.exe
888	svchost.exe
888	svchost.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeDebugPrivilege	1912	2024-04-29_29fa75458106f03a11560ca466363129_chaos_destroyer_wannacry.exe
Token: SeDebugPrivilege	888	svchost.exe
Token: SeBackupPrivilege	2736	vssvc.exe
Token: SeRestorePrivilege	2736	vssvc.exe
Token: SeAuditPrivilege	2736	vssvc.exe
Token: SeIncreaseQuotaPrivilege	2336	WMIC.exe
Token: SeSecurityPrivilege	2336	WMIC.exe
Token: SeTakeOwnershipPrivilege	2336	WMIC.exe
Token: SeLoadDriverPrivilege	2336	WMIC.exe
Token: SeSystemProfilePrivilege	2336	WMIC.exe
Token: SeSystemtimePrivilege	2336	WMIC.exe
Token: SeProfSingleProcessPrivilege	2336	WMIC.exe
Token: SeIncBasePriorityPrivilege	2336	WMIC.exe
Token: SeCreatePagefilePrivilege	2336	WMIC.exe
Token: SeBackupPrivilege	2336	WMIC.exe
Token: SeRestorePrivilege	2336	WMIC.exe
Token: SeShutdownPrivilege	2336	WMIC.exe
Token: SeDebugPrivilege	2336	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2336	WMIC.exe
Token: SeRemoteShutdownPrivilege	2336	WMIC.exe
Token: SeUndockPrivilege	2336	WMIC.exe
Token: SeManageVolumePrivilege	2336	WMIC.exe
Token: 33	2336	WMIC.exe
Token: 34	2336	WMIC.exe
Token: 35	2336	WMIC.exe
Token: SeIncreaseQuotaPrivilege	2336	WMIC.exe
Token: SeSecurityPrivilege	2336	WMIC.exe
Token: SeTakeOwnershipPrivilege	2336	WMIC.exe
Token: SeLoadDriverPrivilege	2336	WMIC.exe
Token: SeSystemProfilePrivilege	2336	WMIC.exe
Token: SeSystemtimePrivilege	2336	WMIC.exe
Token: SeProfSingleProcessPrivilege	2336	WMIC.exe
Token: SeIncBasePriorityPrivilege	2336	WMIC.exe
Token: SeCreatePagefilePrivilege	2336	WMIC.exe
Token: SeBackupPrivilege	2336	WMIC.exe
Token: SeRestorePrivilege	2336	WMIC.exe
Token: SeShutdownPrivilege	2336	WMIC.exe
Token: SeDebugPrivilege	2336	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2336	WMIC.exe
Token: SeRemoteShutdownPrivilege	2336	WMIC.exe
Token: SeUndockPrivilege	2336	WMIC.exe
Token: SeManageVolumePrivilege	2336	WMIC.exe
Token: 33	2336	WMIC.exe
Token: 34	2336	WMIC.exe
Token: 35	2336	WMIC.exe
Token: SeBackupPrivilege	1672	wbengine.exe
Token: SeRestorePrivilege	1672	wbengine.exe
Token: SeSecurityPrivilege	1672	wbengine.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1912 wrote to memory of 888	1912	2024-04-29_29fa75458106f03a11560ca466363129_chaos_destroyer_wannacry.exe	30
PID 1912 wrote to memory of 888	1912	2024-04-29_29fa75458106f03a11560ca466363129_chaos_destroyer_wannacry.exe	30
PID 1912 wrote to memory of 888	1912	2024-04-29_29fa75458106f03a11560ca466363129_chaos_destroyer_wannacry.exe	30
PID 888 wrote to memory of 3048	888	svchost.exe	32
PID 888 wrote to memory of 3048	888	svchost.exe	32
PID 888 wrote to memory of 3048	888	svchost.exe	32
PID 3048 wrote to memory of 1624	3048	cmd.exe	34
PID 3048 wrote to memory of 1624	3048	cmd.exe	34
PID 3048 wrote to memory of 1624	3048	cmd.exe	34
PID 3048 wrote to memory of 2336	3048	cmd.exe	37
PID 3048 wrote to memory of 2336	3048	cmd.exe	37
PID 3048 wrote to memory of 2336	3048	cmd.exe	37
PID 888 wrote to memory of 3060	888	svchost.exe	39
PID 888 wrote to memory of 3060	888	svchost.exe	39
PID 888 wrote to memory of 3060	888	svchost.exe	39
PID 3060 wrote to memory of 1708	3060	cmd.exe	41
PID 3060 wrote to memory of 1708	3060	cmd.exe	41
PID 3060 wrote to memory of 1708	3060	cmd.exe	41
PID 3060 wrote to memory of 1700	3060	cmd.exe	42
PID 3060 wrote to memory of 1700	3060	cmd.exe	42
PID 3060 wrote to memory of 1700	3060	cmd.exe	42
PID 888 wrote to memory of 1704	888	svchost.exe	43
PID 888 wrote to memory of 1704	888	svchost.exe	43
PID 888 wrote to memory of 1704	888	svchost.exe	43
PID 1704 wrote to memory of 1296	1704	cmd.exe	45
PID 1704 wrote to memory of 1296	1704	cmd.exe	45
PID 1704 wrote to memory of 1296	1704	cmd.exe	45
PID 888 wrote to memory of 1992	888	svchost.exe	49
PID 888 wrote to memory of 1992	888	svchost.exe	49
PID 888 wrote to memory of 1992	888	svchost.exe	49

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\2024-04-29_29fa75458106f03a11560ca466363129_chaos_destroyer_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-29_29fa75458106f03a11560ca466363129_chaos_destroyer_wannacry.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1912
- 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:888
- - 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:3048
  - - C:\Windows\system32\vssadmin.exe
      vssadmin delete shadows /all /quiet
      4⤵
      Interacts with shadow copies
      PID:1624
  - - C:\Windows\System32\Wbem\WMIC.exe
      wmic shadowcopy delete
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:2336
- - 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:3060
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} bootstatuspolicy ignoreallfailures
      4⤵
      Modifies boot configuration data using bcdedit
      PID:1708
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} recoveryenabled no
      4⤵
      Modifies boot configuration data using bcdedit
      PID:1700
- - C:\Windows\System32\cmd.exe
    "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1704
  - - C:\Windows\system32\wbadmin.exe
      wbadmin delete catalog -quiet
      4⤵
      Deletes backup catalog
      PID:1296
- - 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:1992

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2736

C:\Windows\system32\wbengine.exe
"C:\Windows\system32\wbengine.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1672

C:\Windows\System32\vdsldr.exe
C:\Windows\System32\vdsldr.exe -Embedding
1⤵
PID:684

C:\Windows\System32\vds.exe
C:\Windows\System32\vds.exe
1⤵
PID:1668

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
22KB

MD5
29fa75458106f03a11560ca466363129

SHA1
89db6502c8170f260b48d80ee0ece3380ba77eb5

SHA256
3f5ade39f3658b6da93987f7ba7dba38d7d94096638ef9f3565790e6ab73eef7

SHA512
28a58b096f560ac4cd03b96f77f7e0cbe7e96c4fb56fb6758c3e4ff7304e3ae4e0db35570f69070c676e45143dedb7be50556bc80f38364400ea2d43bec99188

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

Filesize
462B

MD5
9ef56b0438e82e07aa14fb9481d10b18

SHA1
b4d069b4737d9f32d07618d83650f7c1ed3bf6eb

SHA256
ae7ff3ea3c8870144b97cde602f5e84f8a365939cf127fafa38a5309f29b69d3

SHA512
a7f14c7f8b01ef7c21e2350e9b9efdcbb8d533197b63d7bc50d4c75a2190a2fc5633698a532ed07a186333097dd08991852721051d255d1bf2cfc9356cdf523d

Download Submit
memory/888-8-0x0000000001310000-0x000000000131C000-memory.dmp

Filesize
48KB

Download
memory/888-10-0x000007FEF5B00000-0x000007FEF64EC000-memory.dmp

Filesize
9.9MB

Download
memory/888-12-0x0000000000AB0000-0x0000000000B30000-memory.dmp

Filesize
512KB

Download
memory/888-447-0x000007FEF5B00000-0x000007FEF64EC000-memory.dmp

Filesize
9.9MB

Download
memory/888-448-0x0000000000AB0000-0x0000000000B30000-memory.dmp

Filesize
512KB

Download
memory/1912-0-0x0000000001130000-0x000000000113C000-memory.dmp

Filesize
48KB

Download
memory/1912-1-0x000007FEF5B00000-0x000007FEF64EC000-memory.dmp

Filesize
9.9MB

Download
memory/1912-2-0x000007FEF5B00000-0x000007FEF64EC000-memory.dmp

Filesize
9.9MB

Download
memory/1912-9-0x000007FEF5B00000-0x000007FEF64EC000-memory.dmp

Filesize
9.9MB

Download