chaos | 08e3bb991b3a3cdedf51f58ff854be44d71e4a5c0b73675b05a01334dc8b0011

Analysis

max time kernel
121s
max time network
122s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
18-06-2024 17:32

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General

Target

2024-06-18_f1e5373a3dba05ae9b20da3131c2eed2_destroyer_wannacry.exe
Size

23KB
MD5

f1e5373a3dba05ae9b20da3131c2eed2
SHA1

18948db41873255e7178b35bd2d5b7aefd6b4c2b
SHA256

08e3bb991b3a3cdedf51f58ff854be44d71e4a5c0b73675b05a01334dc8b0011
SHA512

34d59d0bd03e62481935b5957a1f8d4da1c1b91e275fcc8f7d1449a32d92c636199204c7f56264b9288b588accbd4f37234686c4211944da482f8ef6f8cd862c
SSDEEP

384:D3Mg/bqo2XReIC0vkr8RpId6XBYJTr91CYybR1ARiev:1qo2BentwRpRxwTr9HybRLev

Score

10^/10

chaos defense_evasion evasion execution impact ransomware spyware stealer

Malware Config

Signatures

Chaos
Ransomware family first seen in June 2021.
ransomware chaos

Chaos Ransomware 3 IoCs

resource	yara_rule
behavioral1/memory/2900-1-0x0000000000A30000-0x0000000000A3C000-memory.dmp	family_chaos
behavioral1/files/0x000a00000001227e-5.dat	family_chaos
behavioral1/memory/2844-7-0x0000000000800000-0x000000000080C000-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

Detects command variations typically used by ransomware 3 IoCs

resource	yara_rule
behavioral1/memory/2900-1-0x0000000000A30000-0x0000000000A3C000-memory.dmp	INDICATOR_SUSPICIOUS_GENRansomware
behavioral1/files/0x000a00000001227e-5.dat	INDICATOR_SUSPICIOUS_GENRansomware
behavioral1/memory/2844-7-0x0000000000800000-0x000000000080C000-memory.dmp	INDICATOR_SUSPICIOUS_GENRansomware

Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs

ransomware evasion

Inhibit System Recovery

T1490

pid	Process
2884	bcdedit.exe
2872	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
2132	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\curriculo.pdf	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2844	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\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\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Accessibility\Desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Contacts\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\Videos\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\Documents\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\Public\Documents\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\AppData\Roaming\Microsoft\Windows\Libraries\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Favorites\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Videos\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\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\Maintenance\Desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Desktop\desktop.ini	svchost.exe
File opened for modification	F:\$RECYCLE.BIN\S-1-5-21-268080393-3149932598-1824759070-1000\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\User Pinned\TaskBar\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\Administrative Tools\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Pictures\desktop.ini	svchost.exe
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\Admin\Links\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\System 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\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\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
2032	vssadmin.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2844	svchost.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2900	2024-06-18_f1e5373a3dba05ae9b20da3131c2eed2_destroyer_wannacry.exe
2900	2024-06-18_f1e5373a3dba05ae9b20da3131c2eed2_destroyer_wannacry.exe
2844	svchost.exe
2844	svchost.exe
2844	svchost.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1924	AcroRd32.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeDebugPrivilege	2900	2024-06-18_f1e5373a3dba05ae9b20da3131c2eed2_destroyer_wannacry.exe
Token: SeDebugPrivilege	2844	svchost.exe
Token: SeBackupPrivilege	1268	vssvc.exe
Token: SeRestorePrivilege	1268	vssvc.exe
Token: SeAuditPrivilege	1268	vssvc.exe
Token: SeIncreaseQuotaPrivilege	1280	WMIC.exe
Token: SeSecurityPrivilege	1280	WMIC.exe
Token: SeTakeOwnershipPrivilege	1280	WMIC.exe
Token: SeLoadDriverPrivilege	1280	WMIC.exe
Token: SeSystemProfilePrivilege	1280	WMIC.exe
Token: SeSystemtimePrivilege	1280	WMIC.exe
Token: SeProfSingleProcessPrivilege	1280	WMIC.exe
Token: SeIncBasePriorityPrivilege	1280	WMIC.exe
Token: SeCreatePagefilePrivilege	1280	WMIC.exe
Token: SeBackupPrivilege	1280	WMIC.exe
Token: SeRestorePrivilege	1280	WMIC.exe
Token: SeShutdownPrivilege	1280	WMIC.exe
Token: SeDebugPrivilege	1280	WMIC.exe
Token: SeSystemEnvironmentPrivilege	1280	WMIC.exe
Token: SeRemoteShutdownPrivilege	1280	WMIC.exe
Token: SeUndockPrivilege	1280	WMIC.exe
Token: SeManageVolumePrivilege	1280	WMIC.exe
Token: 33	1280	WMIC.exe
Token: 34	1280	WMIC.exe
Token: 35	1280	WMIC.exe
Token: SeIncreaseQuotaPrivilege	1280	WMIC.exe
Token: SeSecurityPrivilege	1280	WMIC.exe
Token: SeTakeOwnershipPrivilege	1280	WMIC.exe
Token: SeLoadDriverPrivilege	1280	WMIC.exe
Token: SeSystemProfilePrivilege	1280	WMIC.exe
Token: SeSystemtimePrivilege	1280	WMIC.exe
Token: SeProfSingleProcessPrivilege	1280	WMIC.exe
Token: SeIncBasePriorityPrivilege	1280	WMIC.exe
Token: SeCreatePagefilePrivilege	1280	WMIC.exe
Token: SeBackupPrivilege	1280	WMIC.exe
Token: SeRestorePrivilege	1280	WMIC.exe
Token: SeShutdownPrivilege	1280	WMIC.exe
Token: SeDebugPrivilege	1280	WMIC.exe
Token: SeSystemEnvironmentPrivilege	1280	WMIC.exe
Token: SeRemoteShutdownPrivilege	1280	WMIC.exe
Token: SeUndockPrivilege	1280	WMIC.exe
Token: SeManageVolumePrivilege	1280	WMIC.exe
Token: 33	1280	WMIC.exe
Token: 34	1280	WMIC.exe
Token: 35	1280	WMIC.exe
Token: SeBackupPrivilege	1856	wbengine.exe
Token: SeRestorePrivilege	1856	wbengine.exe
Token: SeSecurityPrivilege	1856	wbengine.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1924	AcroRd32.exe
1924	AcroRd32.exe

Suspicious use of WriteProcessMemory 31 IoCs

description	pid	Process	procid_target
PID 2900 wrote to memory of 2844	2900	2024-06-18_f1e5373a3dba05ae9b20da3131c2eed2_destroyer_wannacry.exe	28
PID 2900 wrote to memory of 2844	2900	2024-06-18_f1e5373a3dba05ae9b20da3131c2eed2_destroyer_wannacry.exe	28
PID 2900 wrote to memory of 2844	2900	2024-06-18_f1e5373a3dba05ae9b20da3131c2eed2_destroyer_wannacry.exe	28
PID 2844 wrote to memory of 1036	2844	svchost.exe	30
PID 2844 wrote to memory of 1036	2844	svchost.exe	30
PID 2844 wrote to memory of 1036	2844	svchost.exe	30
PID 1036 wrote to memory of 2032	1036	cmd.exe	32
PID 1036 wrote to memory of 2032	1036	cmd.exe	32
PID 1036 wrote to memory of 2032	1036	cmd.exe	32
PID 1036 wrote to memory of 1280	1036	cmd.exe	35
PID 1036 wrote to memory of 1280	1036	cmd.exe	35
PID 1036 wrote to memory of 1280	1036	cmd.exe	35
PID 2844 wrote to memory of 316	2844	svchost.exe	37
PID 2844 wrote to memory of 316	2844	svchost.exe	37
PID 2844 wrote to memory of 316	2844	svchost.exe	37
PID 316 wrote to memory of 2884	316	cmd.exe	39
PID 316 wrote to memory of 2884	316	cmd.exe	39
PID 316 wrote to memory of 2884	316	cmd.exe	39
PID 316 wrote to memory of 2872	316	cmd.exe	40
PID 316 wrote to memory of 2872	316	cmd.exe	40
PID 316 wrote to memory of 2872	316	cmd.exe	40
PID 2844 wrote to memory of 2824	2844	svchost.exe	41
PID 2844 wrote to memory of 2824	2844	svchost.exe	41
PID 2844 wrote to memory of 2824	2844	svchost.exe	41
PID 2824 wrote to memory of 2132	2824	cmd.exe	43
PID 2824 wrote to memory of 2132	2824	cmd.exe	43
PID 2824 wrote to memory of 2132	2824	cmd.exe	43
PID 2844 wrote to memory of 1924	2844	svchost.exe	47
PID 2844 wrote to memory of 1924	2844	svchost.exe	47
PID 2844 wrote to memory of 1924	2844	svchost.exe	47
PID 2844 wrote to memory of 1924	2844	svchost.exe	47

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\2024-06-18_f1e5373a3dba05ae9b20da3131c2eed2_destroyer_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-18_f1e5373a3dba05ae9b20da3131c2eed2_destroyer_wannacry.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2900
- 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:2844
- - 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:1036
  - - C:\Windows\system32\vssadmin.exe
      vssadmin delete shadows /all /quiet
      4⤵
      Interacts with shadow copies
      PID:2032
  - - C:\Windows\System32\Wbem\WMIC.exe
      wmic shadowcopy delete
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:1280
- - 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:316
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} bootstatuspolicy ignoreallfailures
      4⤵
      Modifies boot configuration data using bcdedit
      PID:2884
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} recoveryenabled no
      4⤵
      Modifies boot configuration data using bcdedit
      PID:2872
- - C:\Windows\System32\cmd.exe
    "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2824
  - - C:\Windows\system32\wbadmin.exe
      wbadmin delete catalog -quiet
      4⤵
      Deletes backup catalog
      PID:2132
- - C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe
    "C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe" "C:\Users\Admin\AppData\Roaming\curriculo.pdf"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:1924

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1268

C:\Windows\system32\wbengine.exe
"C:\Windows\system32\wbengine.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1856

C:\Windows\System32\vdsldr.exe
C:\Windows\System32\vdsldr.exe -Embedding
1⤵
PID:1096

C:\Windows\System32\vds.exe
C:\Windows\System32\vds.exe
1⤵
PID:1004

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\Adobe\Acrobat\9.0\SharedDataEvents

Filesize
3KB

MD5
f1de63a9eae87398f8cb841059b7a65d

SHA1
796312c9361aed287a98c0b298d49b22dab104e7

SHA256
6a018c58f4ddb028c2a27ff01a423b8c2c3eae6b2e936142e833ea9fcfc6739a

SHA512
04dab381046ab87b7ca53601b5cdf456a16736775479995a2f193aa40ac5d7bcbf90935397b8d691c209d8270536379c91abc2d02ef98227c3fb2753a7d961d3

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

Filesize
23KB

MD5
f1e5373a3dba05ae9b20da3131c2eed2

SHA1
18948db41873255e7178b35bd2d5b7aefd6b4c2b

SHA256
08e3bb991b3a3cdedf51f58ff854be44d71e4a5c0b73675b05a01334dc8b0011

SHA512
34d59d0bd03e62481935b5957a1f8d4da1c1b91e275fcc8f7d1449a32d92c636199204c7f56264b9288b588accbd4f37234686c4211944da482f8ef6f8cd862c

Download Submit
C:\Users\Admin\Documents\curriculo.pdf

Filesize
857B

MD5
63909e296a7026f9473aa5b3c7693624

SHA1
8a996c577a6e80c672193700b934b6a5fd90562f

SHA256
888c1e54620abd1fe5ae0b50f498b52e2d5fd6d3b374b843a212536691022fa5

SHA512
6817ff7788c06ca3648ffa49fd4b5f798fdfb7d6173ceb70a0cddc153442557bc2b30fe38791e1e29862952af30b0604dd59fe8a7a39e29e6b274412434e5302

Download Submit
memory/2844-7-0x0000000000800000-0x000000000080C000-memory.dmp

Filesize
48KB

Download
memory/2844-9-0x000007FEF5350000-0x000007FEF5D3C000-memory.dmp

Filesize
9.9MB

Download
memory/2844-12-0x000007FEF5350000-0x000007FEF5D3C000-memory.dmp

Filesize
9.9MB

Download
memory/2844-508-0x000007FEF5350000-0x000007FEF5D3C000-memory.dmp

Filesize
9.9MB

Download
memory/2900-0-0x000007FEF5353000-0x000007FEF5354000-memory.dmp

Filesize
4KB

Download
memory/2900-1-0x0000000000A30000-0x0000000000A3C000-memory.dmp

Filesize
48KB

Download