chaos | 0bb2957b2b8ed0a1c458da6edeaf5a48b2c1ecdd7d7ed33d00749ef1f5653b1e

Analysis

max time kernel
118s
max time network
118s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
03-12-2024 22:21

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General

Target

2024-12-03_bcf73d0b807d66634d7d25f399fa8ffe_destroyer_wannacry.exe
Size

88KB
MD5

bcf73d0b807d66634d7d25f399fa8ffe
SHA1

3db3790b46e2d430374f6c40e7ce25e633696b75
SHA256

0bb2957b2b8ed0a1c458da6edeaf5a48b2c1ecdd7d7ed33d00749ef1f5653b1e
SHA512

0750fe4212f1bc7a16a426f6c363797e926656f7f27cc2bc5d5f624a436b3a075263ca29fa609696d7ef2d18b79ef7da4998c75a36c9bda2bd2beb456ae08f31
SSDEEP

768:Hqo2MgNp4wBAQr9uNev2SU2Ip4jBqltCF0AxEjenoB69+Fx:Ko2g0AQr9usv2SFHBWAxEjc+

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/2524-1-0x0000000001110000-0x000000000112C000-memory.dmp	family_chaos
behavioral1/files/0x0007000000012117-7.dat	family_chaos
behavioral1/memory/1552-8-0x0000000000A10000-0x0000000000A2C000-memory.dmp	family_chaos

Chaos 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
1308	bcdedit.exe
1684	bcdedit.exe

Renames multiple (222) 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
2980	wbadmin.exe

Drops startup file 3 IoCs

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

Executes dropped EXE 1 IoCs

pid	Process
1552	AdobeReader.exe

Reads user/profile data of web browsers 3 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

Credentials from Web Browsers
T1555.003

Drops desktop.ini file(s) 34 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\Contacts\desktop.ini	AdobeReader.exe
File opened for modification	C:\Users\Admin\Favorites\Links\desktop.ini	AdobeReader.exe
File opened for modification	C:\Users\Admin\Searches\desktop.ini	AdobeReader.exe
File opened for modification	C:\Users\Public\Pictures\Sample Pictures\desktop.ini	AdobeReader.exe
File opened for modification	C:\Users\Public\Videos\desktop.ini	AdobeReader.exe
File opened for modification	C:\Users\Admin\Downloads\desktop.ini	AdobeReader.exe
File opened for modification	C:\Users\Admin\Favorites\desktop.ini	AdobeReader.exe
File opened for modification	C:\Users\Admin\Desktop\desktop.ini	AdobeReader.exe
File opened for modification	C:\Users\Admin\Music\desktop.ini	AdobeReader.exe
File opened for modification	C:\Users\Admin\Saved Games\desktop.ini	AdobeReader.exe
File opened for modification	C:\Users\Public\Documents\desktop.ini	AdobeReader.exe
File opened for modification	C:\Users\Admin\Links\desktop.ini	AdobeReader.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\SendTo\Desktop.ini	AdobeReader.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\desktop.ini	AdobeReader.exe
File opened for modification	C:\Users\Public\Videos\Sample Videos\desktop.ini	AdobeReader.exe
File opened for modification	F:\$RECYCLE.BIN\S-1-5-21-2872745919-2748461613-2989606286-1000\desktop.ini	AdobeReader.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\System Tools\Desktop.ini	AdobeReader.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Administrative Tools\desktop.ini	AdobeReader.exe
File opened for modification	C:\Users\Public\Pictures\desktop.ini	AdobeReader.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\desktop.ini	AdobeReader.exe
File opened for modification	C:\Users\Public\Desktop\desktop.ini	AdobeReader.exe
File opened for modification	C:\Users\Admin\Documents\desktop.ini	AdobeReader.exe
File opened for modification	C:\Users\Admin\Pictures\desktop.ini	AdobeReader.exe
File opened for modification	C:\Users\Admin\Videos\desktop.ini	AdobeReader.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar\desktop.ini	AdobeReader.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Libraries\desktop.ini	AdobeReader.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\desktop.ini	AdobeReader.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Desktop.ini	AdobeReader.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Accessibility\Desktop.ini	AdobeReader.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Maintenance\Desktop.ini	AdobeReader.exe
File opened for modification	C:\Users\Admin\Favorites\Links for United States\desktop.ini	AdobeReader.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\desktop.ini	AdobeReader.exe
File opened for modification	C:\Users\Public\Music\desktop.ini	AdobeReader.exe
File opened for modification	C:\Users\Public\Music\Sample Music\desktop.ini	AdobeReader.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
1508	vssadmin.exe

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
1768	NOTEPAD.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
1552	AdobeReader.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
2524	2024-12-03_bcf73d0b807d66634d7d25f399fa8ffe_destroyer_wannacry.exe
2524	2024-12-03_bcf73d0b807d66634d7d25f399fa8ffe_destroyer_wannacry.exe
2524	2024-12-03_bcf73d0b807d66634d7d25f399fa8ffe_destroyer_wannacry.exe
1552	AdobeReader.exe
1552	AdobeReader.exe
1552	AdobeReader.exe
1552	AdobeReader.exe
1552	AdobeReader.exe
1552	AdobeReader.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeDebugPrivilege	2524	2024-12-03_bcf73d0b807d66634d7d25f399fa8ffe_destroyer_wannacry.exe
Token: SeDebugPrivilege	1552	AdobeReader.exe
Token: SeBackupPrivilege	1056	vssvc.exe
Token: SeRestorePrivilege	1056	vssvc.exe
Token: SeAuditPrivilege	1056	vssvc.exe
Token: SeIncreaseQuotaPrivilege	2800	WMIC.exe
Token: SeSecurityPrivilege	2800	WMIC.exe
Token: SeTakeOwnershipPrivilege	2800	WMIC.exe
Token: SeLoadDriverPrivilege	2800	WMIC.exe
Token: SeSystemProfilePrivilege	2800	WMIC.exe
Token: SeSystemtimePrivilege	2800	WMIC.exe
Token: SeProfSingleProcessPrivilege	2800	WMIC.exe
Token: SeIncBasePriorityPrivilege	2800	WMIC.exe
Token: SeCreatePagefilePrivilege	2800	WMIC.exe
Token: SeBackupPrivilege	2800	WMIC.exe
Token: SeRestorePrivilege	2800	WMIC.exe
Token: SeShutdownPrivilege	2800	WMIC.exe
Token: SeDebugPrivilege	2800	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2800	WMIC.exe
Token: SeRemoteShutdownPrivilege	2800	WMIC.exe
Token: SeUndockPrivilege	2800	WMIC.exe
Token: SeManageVolumePrivilege	2800	WMIC.exe
Token: 33	2800	WMIC.exe
Token: 34	2800	WMIC.exe
Token: 35	2800	WMIC.exe
Token: SeIncreaseQuotaPrivilege	2800	WMIC.exe
Token: SeSecurityPrivilege	2800	WMIC.exe
Token: SeTakeOwnershipPrivilege	2800	WMIC.exe
Token: SeLoadDriverPrivilege	2800	WMIC.exe
Token: SeSystemProfilePrivilege	2800	WMIC.exe
Token: SeSystemtimePrivilege	2800	WMIC.exe
Token: SeProfSingleProcessPrivilege	2800	WMIC.exe
Token: SeIncBasePriorityPrivilege	2800	WMIC.exe
Token: SeCreatePagefilePrivilege	2800	WMIC.exe
Token: SeBackupPrivilege	2800	WMIC.exe
Token: SeRestorePrivilege	2800	WMIC.exe
Token: SeShutdownPrivilege	2800	WMIC.exe
Token: SeDebugPrivilege	2800	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2800	WMIC.exe
Token: SeRemoteShutdownPrivilege	2800	WMIC.exe
Token: SeUndockPrivilege	2800	WMIC.exe
Token: SeManageVolumePrivilege	2800	WMIC.exe
Token: 33	2800	WMIC.exe
Token: 34	2800	WMIC.exe
Token: 35	2800	WMIC.exe
Token: SeBackupPrivilege	2120	wbengine.exe
Token: SeRestorePrivilege	2120	wbengine.exe
Token: SeSecurityPrivilege	2120	wbengine.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2524 wrote to memory of 1552	2524	2024-12-03_bcf73d0b807d66634d7d25f399fa8ffe_destroyer_wannacry.exe	30
PID 2524 wrote to memory of 1552	2524	2024-12-03_bcf73d0b807d66634d7d25f399fa8ffe_destroyer_wannacry.exe	30
PID 2524 wrote to memory of 1552	2524	2024-12-03_bcf73d0b807d66634d7d25f399fa8ffe_destroyer_wannacry.exe	30
PID 1552 wrote to memory of 1784	1552	AdobeReader.exe	32
PID 1552 wrote to memory of 1784	1552	AdobeReader.exe	32
PID 1552 wrote to memory of 1784	1552	AdobeReader.exe	32
PID 1784 wrote to memory of 1508	1784	cmd.exe	34
PID 1784 wrote to memory of 1508	1784	cmd.exe	34
PID 1784 wrote to memory of 1508	1784	cmd.exe	34
PID 1784 wrote to memory of 2800	1784	cmd.exe	37
PID 1784 wrote to memory of 2800	1784	cmd.exe	37
PID 1784 wrote to memory of 2800	1784	cmd.exe	37
PID 1552 wrote to memory of 576	1552	AdobeReader.exe	39
PID 1552 wrote to memory of 576	1552	AdobeReader.exe	39
PID 1552 wrote to memory of 576	1552	AdobeReader.exe	39
PID 576 wrote to memory of 1308	576	cmd.exe	41
PID 576 wrote to memory of 1308	576	cmd.exe	41
PID 576 wrote to memory of 1308	576	cmd.exe	41
PID 576 wrote to memory of 1684	576	cmd.exe	42
PID 576 wrote to memory of 1684	576	cmd.exe	42
PID 576 wrote to memory of 1684	576	cmd.exe	42
PID 1552 wrote to memory of 1700	1552	AdobeReader.exe	43
PID 1552 wrote to memory of 1700	1552	AdobeReader.exe	43
PID 1552 wrote to memory of 1700	1552	AdobeReader.exe	43
PID 1700 wrote to memory of 2980	1700	cmd.exe	45
PID 1700 wrote to memory of 2980	1700	cmd.exe	45
PID 1700 wrote to memory of 2980	1700	cmd.exe	45
PID 1552 wrote to memory of 1768	1552	AdobeReader.exe	49
PID 1552 wrote to memory of 1768	1552	AdobeReader.exe	49
PID 1552 wrote to memory of 1768	1552	AdobeReader.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\2024-12-03_bcf73d0b807d66634d7d25f399fa8ffe_destroyer_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2024-12-03_bcf73d0b807d66634d7d25f399fa8ffe_destroyer_wannacry.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2524
- C:\Users\Admin\AppData\Roaming\AdobeReader.exe
  "C:\Users\Admin\AppData\Roaming\AdobeReader.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:1552
- - 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:1784
  - - C:\Windows\system32\vssadmin.exe
      vssadmin delete shadows /all /quiet
      4⤵
      Interacts with shadow copies
      PID:1508
  - - C:\Windows\System32\Wbem\WMIC.exe
      wmic shadowcopy delete
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:2800
- - 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:576
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} bootstatuspolicy ignoreallfailures
      4⤵
      Modifies boot configuration data using bcdedit
      PID:1308
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} recoveryenabled no
      4⤵
      Modifies boot configuration data using bcdedit
      PID:1684
- - C:\Windows\System32\cmd.exe
    "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1700
  - - C:\Windows\system32\wbadmin.exe
      wbadmin delete catalog -quiet
      4⤵
      Deletes backup catalog
      PID:2980
- - C:\Windows\system32\NOTEPAD.EXE
    "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\readme.txt
    3⤵
    - Opens file in notepad (likely ransom note)
    PID:1768

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1056

C:\Windows\system32\wbengine.exe
"C:\Windows\system32\wbengine.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2120

C:\Windows\System32\vdsldr.exe
C:\Windows\System32\vdsldr.exe -Embedding
1⤵
PID:2360

C:\Windows\System32\vds.exe
C:\Windows\System32\vds.exe
1⤵
PID:1644

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

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

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\AdobeReader.exe

Filesize
88KB

MD5
bcf73d0b807d66634d7d25f399fa8ffe

SHA1
3db3790b46e2d430374f6c40e7ce25e633696b75

SHA256
0bb2957b2b8ed0a1c458da6edeaf5a48b2c1ecdd7d7ed33d00749ef1f5653b1e

SHA512
0750fe4212f1bc7a16a426f6c363797e926656f7f27cc2bc5d5f624a436b3a075263ca29fa609696d7ef2d18b79ef7da4998c75a36c9bda2bd2beb456ae08f31

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

Filesize
379B

MD5
2229cf5789dde916f76e2fcc1feb0a79

SHA1
43414adea3f0b537aae4ac0f884678b8a7fe21fb

SHA256
eccddbff564c04173b6704b3c3cdc3cd2cb166acbd97e8d18dd39286d9460760

SHA512
48ae3dfe5f5061c109ac281f21f5c4526e212421b5df516937eabc7780ffef2c8f6aa58a93af8a069603a37d20e0c1852f2c9776ed2d34701720455546befde1

Download Submit
memory/1552-8-0x0000000000A10000-0x0000000000A2C000-memory.dmp

Filesize
112KB

Download
memory/1552-9-0x000007FEF5DA0000-0x000007FEF678C000-memory.dmp

Filesize
9.9MB

Download
memory/1552-19-0x000007FEF5DA0000-0x000007FEF678C000-memory.dmp

Filesize
9.9MB

Download
memory/1552-509-0x000007FEF5DA0000-0x000007FEF678C000-memory.dmp

Filesize
9.9MB

Download
memory/2524-0-0x000007FEF5DA3000-0x000007FEF5DA4000-memory.dmp

Filesize
4KB

Download
memory/2524-1-0x0000000001110000-0x000000000112C000-memory.dmp

Filesize
112KB

Download
memory/2524-2-0x000007FEF5DA3000-0x000007FEF5DA4000-memory.dmp

Filesize
4KB

Download