chaos | 91ef0318ac9a10ce0976b29f57ea570b6907cccc92f182f5e916d5273f0b71e3

Analysis

max time kernel
41s
max time network
20s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
22-08-2024 23:25

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General

Target

2024-08-22_fffcec172fd2e908588f098ce331f3e7_chaos_destroyer_wannacry.exe
Size

22KB
MD5

fffcec172fd2e908588f098ce331f3e7
SHA1

9846f2ca442cf1080ce104d737f90052fc5592a6
SHA256

91ef0318ac9a10ce0976b29f57ea570b6907cccc92f182f5e916d5273f0b71e3
SHA512

381b0691bb4e8c1bf0e7a4038c320faa112ad4b7d38ae2aa61c362aee7d6eedbb9c351ec5c57577af7081fc1d2c4e4ab756a282f63ba860f70ad3f06f27d9a3d
SSDEEP

384:u3Mg/bqo2I8wvTbLpXFugOjnJyjr91CbIde4:Mqo2javpkgOjJMr90ge4

Score

10^/10

chaos defense_evasion evasion execution impact ransomware spyware stealer

Malware Config

Extracted

Path

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

Ransom Note

oops your files has been encrypted by the death ransomware to decrypt your files pay us 1 dollar worth of bitcoin to pay the ransom contact [email protected] for more information also good luck trying to recover your files becuase all backups and windows recovery mode has been DELETED!!

Emails

[email protected]

Signatures

Chaos
Ransomware family first seen in June 2021.
ransomware chaos

Chaos Ransomware 3 IoCs

resource	yara_rule
behavioral1/memory/3008-1-0x0000000001230000-0x000000000123C000-memory.dmp	family_chaos
behavioral1/files/0x000d0000000141f5-6.dat	family_chaos
behavioral1/memory/2024-8-0x0000000000F20000-0x0000000000F2C000-memory.dmp	family_chaos

Deletes shadow copies 3 TTPs
Ransomware often targets backup files to inhibit system recovery.
ransomware defense_evasion impact execution

File Deletion
T1070.004

Inhibit System Recovery
T1490

Windows Management Instrumentation
T1047

Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs

ransomware evasion

Inhibit System Recovery

T1490

pid	Process
792	bcdedit.exe
1032	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
1376	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\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
2024	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\Saved Games\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\Downloads\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Pictures\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	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Libraries\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Music\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\Internet Explorer\Quick Launch\User Pinned\TaskBar\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\Start Menu\Programs\Accessories\Accessibility\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\Favorites\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\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\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Maintenance\Desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Pictures\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Pictures\Sample Pictures\desktop.ini	svchost.exe
File opened for modification	F:\$RECYCLE.BIN\S-1-5-21-2212144002-1172735686-1556890956-1000\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\Recent\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\Music\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\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\SendTo\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\Administrative Tools\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Documents\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 3 TTPs 1 IoCs

Shadow copies are often targeted by ransomware to inhibit system recovery.

ransomware

File Deletion

T1070.004

Inhibit System Recovery

T1490

Direct Volume Access

T1006

pid	Process
1420	vssadmin.exe

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
2224	NOTEPAD.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2024	svchost.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
3008	2024-08-22_fffcec172fd2e908588f098ce331f3e7_chaos_destroyer_wannacry.exe
2024	svchost.exe
2024	svchost.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeDebugPrivilege	3008	2024-08-22_fffcec172fd2e908588f098ce331f3e7_chaos_destroyer_wannacry.exe
Token: SeDebugPrivilege	2024	svchost.exe
Token: SeBackupPrivilege	2104	vssvc.exe
Token: SeRestorePrivilege	2104	vssvc.exe
Token: SeAuditPrivilege	2104	vssvc.exe
Token: SeIncreaseQuotaPrivilege	2244	WMIC.exe
Token: SeSecurityPrivilege	2244	WMIC.exe
Token: SeTakeOwnershipPrivilege	2244	WMIC.exe
Token: SeLoadDriverPrivilege	2244	WMIC.exe
Token: SeSystemProfilePrivilege	2244	WMIC.exe
Token: SeSystemtimePrivilege	2244	WMIC.exe
Token: SeProfSingleProcessPrivilege	2244	WMIC.exe
Token: SeIncBasePriorityPrivilege	2244	WMIC.exe
Token: SeCreatePagefilePrivilege	2244	WMIC.exe
Token: SeBackupPrivilege	2244	WMIC.exe
Token: SeRestorePrivilege	2244	WMIC.exe
Token: SeShutdownPrivilege	2244	WMIC.exe
Token: SeDebugPrivilege	2244	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2244	WMIC.exe
Token: SeRemoteShutdownPrivilege	2244	WMIC.exe
Token: SeUndockPrivilege	2244	WMIC.exe
Token: SeManageVolumePrivilege	2244	WMIC.exe
Token: 33	2244	WMIC.exe
Token: 34	2244	WMIC.exe
Token: 35	2244	WMIC.exe
Token: SeIncreaseQuotaPrivilege	2244	WMIC.exe
Token: SeSecurityPrivilege	2244	WMIC.exe
Token: SeTakeOwnershipPrivilege	2244	WMIC.exe
Token: SeLoadDriverPrivilege	2244	WMIC.exe
Token: SeSystemProfilePrivilege	2244	WMIC.exe
Token: SeSystemtimePrivilege	2244	WMIC.exe
Token: SeProfSingleProcessPrivilege	2244	WMIC.exe
Token: SeIncBasePriorityPrivilege	2244	WMIC.exe
Token: SeCreatePagefilePrivilege	2244	WMIC.exe
Token: SeBackupPrivilege	2244	WMIC.exe
Token: SeRestorePrivilege	2244	WMIC.exe
Token: SeShutdownPrivilege	2244	WMIC.exe
Token: SeDebugPrivilege	2244	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2244	WMIC.exe
Token: SeRemoteShutdownPrivilege	2244	WMIC.exe
Token: SeUndockPrivilege	2244	WMIC.exe
Token: SeManageVolumePrivilege	2244	WMIC.exe
Token: 33	2244	WMIC.exe
Token: 34	2244	WMIC.exe
Token: 35	2244	WMIC.exe
Token: SeBackupPrivilege	1832	wbengine.exe
Token: SeRestorePrivilege	1832	wbengine.exe
Token: SeSecurityPrivilege	1832	wbengine.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 3008 wrote to memory of 2024	3008	2024-08-22_fffcec172fd2e908588f098ce331f3e7_chaos_destroyer_wannacry.exe	29
PID 3008 wrote to memory of 2024	3008	2024-08-22_fffcec172fd2e908588f098ce331f3e7_chaos_destroyer_wannacry.exe	29
PID 3008 wrote to memory of 2024	3008	2024-08-22_fffcec172fd2e908588f098ce331f3e7_chaos_destroyer_wannacry.exe	29
PID 2024 wrote to memory of 1300	2024	svchost.exe	31
PID 2024 wrote to memory of 1300	2024	svchost.exe	31
PID 2024 wrote to memory of 1300	2024	svchost.exe	31
PID 1300 wrote to memory of 1420	1300	cmd.exe	33
PID 1300 wrote to memory of 1420	1300	cmd.exe	33
PID 1300 wrote to memory of 1420	1300	cmd.exe	33
PID 1300 wrote to memory of 2244	1300	cmd.exe	37
PID 1300 wrote to memory of 2244	1300	cmd.exe	37
PID 1300 wrote to memory of 2244	1300	cmd.exe	37
PID 2024 wrote to memory of 2504	2024	svchost.exe	39
PID 2024 wrote to memory of 2504	2024	svchost.exe	39
PID 2024 wrote to memory of 2504	2024	svchost.exe	39
PID 2504 wrote to memory of 792	2504	cmd.exe	41
PID 2504 wrote to memory of 792	2504	cmd.exe	41
PID 2504 wrote to memory of 792	2504	cmd.exe	41
PID 2504 wrote to memory of 1032	2504	cmd.exe	42
PID 2504 wrote to memory of 1032	2504	cmd.exe	42
PID 2504 wrote to memory of 1032	2504	cmd.exe	42
PID 2024 wrote to memory of 1784	2024	svchost.exe	43
PID 2024 wrote to memory of 1784	2024	svchost.exe	43
PID 2024 wrote to memory of 1784	2024	svchost.exe	43
PID 1784 wrote to memory of 1376	1784	cmd.exe	45
PID 1784 wrote to memory of 1376	1784	cmd.exe	45
PID 1784 wrote to memory of 1376	1784	cmd.exe	45
PID 2024 wrote to memory of 2224	2024	svchost.exe	49
PID 2024 wrote to memory of 2224	2024	svchost.exe	49
PID 2024 wrote to memory of 2224	2024	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\2024-08-22_fffcec172fd2e908588f098ce331f3e7_chaos_destroyer_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2024-08-22_fffcec172fd2e908588f098ce331f3e7_chaos_destroyer_wannacry.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3008
- 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:2024
- - 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:1300
  - - C:\Windows\system32\vssadmin.exe
      vssadmin delete shadows /all /quiet
      4⤵
      Interacts with shadow copies
      PID:1420
  - - C:\Windows\System32\Wbem\WMIC.exe
      wmic shadowcopy delete
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:2244
- - 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:2504
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} bootstatuspolicy ignoreallfailures
      4⤵
      Modifies boot configuration data using bcdedit
      PID:792
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} recoveryenabled no
      4⤵
      Modifies boot configuration data using bcdedit
      PID:1032
- - C:\Windows\System32\cmd.exe
    "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1784
  - - C:\Windows\system32\wbadmin.exe
      wbadmin delete catalog -quiet
      4⤵
      Deletes backup catalog
      PID:1376
- - C:\Windows\system32\NOTEPAD.EXE
    "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\read_me.txt
    3⤵
    - Opens file in notepad (likely ransom note)
    PID:2224

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2104

C:\Windows\system32\wbengine.exe
"C:\Windows\system32\wbengine.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1832

C:\Windows\System32\vdsldr.exe
C:\Windows\System32\vdsldr.exe -Embedding
1⤵
PID:2072

C:\Windows\System32\vds.exe
C:\Windows\System32\vds.exe
1⤵
PID:1512

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

Windows Management Instrumentation

T1047

Persistence

Privilege Escalation

Defense Evasion

Direct Volume Access

T1006

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
fffcec172fd2e908588f098ce331f3e7

SHA1
9846f2ca442cf1080ce104d737f90052fc5592a6

SHA256
91ef0318ac9a10ce0976b29f57ea570b6907cccc92f182f5e916d5273f0b71e3

SHA512
381b0691bb4e8c1bf0e7a4038c320faa112ad4b7d38ae2aa61c362aee7d6eedbb9c351ec5c57577af7081fc1d2c4e4ab756a282f63ba860f70ad3f06f27d9a3d

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

Filesize
298B

MD5
3669239eb64afebca9ff5bdb9a0db42c

SHA1
c79540eb723478d16c3401b05485fd6f985a0e64

SHA256
4fe396b662d198814047593f99571b203b80d8d5e650d0b1ccda26c8ce50cbe8

SHA512
7ec0b8fabd4d78b8a4a35f798a2f3531136deb4475c30a95acc0d5c7179ad229ed0c4a600a01ec5574f6530a83782494683008da2e10815e34e264afdd994518

Download Submit
memory/2024-8-0x0000000000F20000-0x0000000000F2C000-memory.dmp

Filesize
48KB

Download
memory/2024-9-0x000007FEF4D70000-0x000007FEF575C000-memory.dmp

Filesize
9.9MB

Download
memory/2024-19-0x000007FEF4D70000-0x000007FEF575C000-memory.dmp

Filesize
9.9MB

Download
memory/2024-427-0x000007FEF4D70000-0x000007FEF575C000-memory.dmp

Filesize
9.9MB

Download
memory/2024-476-0x000007FEF4D70000-0x000007FEF575C000-memory.dmp

Filesize
9.9MB

Download
memory/3008-0-0x000007FEF4D73000-0x000007FEF4D74000-memory.dmp

Filesize
4KB

Download
memory/3008-1-0x0000000001230000-0x000000000123C000-memory.dmp

Filesize
48KB

Download
memory/3008-2-0x000007FEF4D73000-0x000007FEF4D74000-memory.dmp

Filesize
4KB

Download