chaos | e86124d645258b8c4ae50bb4b8c93f3cfd8130b161ed7526bded020065e986f4

Analysis

max time kernel
119s
max time network
120s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
31-01-2025 06:28

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General

Target

2025-01-31_3141e9897f750c7b5d0b51f644d63010_destroyer_wannacry.exe
Size

35KB
MD5

3141e9897f750c7b5d0b51f644d63010
SHA1

812e7fb43952d07ea7b29f0f8e3406d408b56e77
SHA256

e86124d645258b8c4ae50bb4b8c93f3cfd8130b161ed7526bded020065e986f4
SHA512

67297eefd2d3a901abc2421cc762e08866ea4519bf191ddf765ee6949421feb8b2f37f3b414d7cbb5669cf26782ff7eb1541c6dcbf2815b196de8e3b1143c3af
SSDEEP

768:wqo2lMDFxp0DFN0/r9cZ3fcx6SOBLiIYpqLQndtg/xeo:Xo2SahN0/r9cRcISO7Lgda/Ao

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/2660-1-0x0000000001260000-0x0000000001270000-memory.dmp	family_chaos
behavioral1/files/0x0007000000012117-4.dat	family_chaos
behavioral1/memory/2908-7-0x0000000000DF0000-0x0000000000E00000-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
1048	bcdedit.exe
1752	bcdedit.exe

Renames multiple (212) 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
1980	wbadmin.exe

Drops startup file 3 IoCs

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

Executes dropped EXE 1 IoCs

pid	Process
2908	explorer.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\Saved Games\desktop.ini	explorer.exe
File opened for modification	C:\Users\Admin\Favorites\Links\desktop.ini	explorer.exe
File opened for modification	C:\Users\Public\Desktop\desktop.ini	explorer.exe
File opened for modification	C:\Users\Admin\Pictures\desktop.ini	explorer.exe
File opened for modification	C:\Users\Admin\Favorites\Links for United States\desktop.ini	explorer.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\desktop.ini	explorer.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Libraries\desktop.ini	explorer.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\desktop.ini	explorer.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\SendTo\Desktop.ini	explorer.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Desktop.ini	explorer.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Accessibility\Desktop.ini	explorer.exe
File opened for modification	C:\Users\Admin\Favorites\desktop.ini	explorer.exe
File opened for modification	C:\Users\Public\Documents\desktop.ini	explorer.exe
File opened for modification	C:\Users\Public\Pictures\desktop.ini	explorer.exe
File opened for modification	C:\Users\Public\Videos\desktop.ini	explorer.exe
File opened for modification	C:\Users\Public\Videos\Sample Videos\desktop.ini	explorer.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Administrative Tools\desktop.ini	explorer.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\desktop.ini	explorer.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\desktop.ini	explorer.exe
File opened for modification	C:\Users\Public\Music\Sample Music\desktop.ini	explorer.exe
File opened for modification	C:\Users\Admin\Desktop\desktop.ini	explorer.exe
File opened for modification	C:\Users\Admin\Videos\desktop.ini	explorer.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\System Tools\Desktop.ini	explorer.exe
File opened for modification	C:\Users\Public\Music\desktop.ini	explorer.exe
File opened for modification	C:\Users\Admin\Documents\desktop.ini	explorer.exe
File opened for modification	C:\Users\Admin\Links\desktop.ini	explorer.exe
File opened for modification	C:\Users\Admin\Searches\desktop.ini	explorer.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar\desktop.ini	explorer.exe
File opened for modification	F:\$RECYCLE.BIN\S-1-5-21-3290804112-2823094203-3137964600-1000\desktop.ini	explorer.exe
File opened for modification	C:\Users\Admin\Contacts\desktop.ini	explorer.exe
File opened for modification	C:\Users\Admin\Music\desktop.ini	explorer.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Maintenance\Desktop.ini	explorer.exe
File opened for modification	C:\Users\Public\Pictures\Sample Pictures\desktop.ini	explorer.exe
File opened for modification	C:\Users\Admin\Downloads\desktop.ini	explorer.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-1-5-21-3290804112-2823094203-3137964600-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\3bxf4ry4h.jpg"	explorer.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
1960	vssadmin.exe

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
316	NOTEPAD.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2908	explorer.exe

Suspicious behavior: EnumeratesProcesses 7 IoCs

pid	Process
2660	2025-01-31_3141e9897f750c7b5d0b51f644d63010_destroyer_wannacry.exe
2660	2025-01-31_3141e9897f750c7b5d0b51f644d63010_destroyer_wannacry.exe
2660	2025-01-31_3141e9897f750c7b5d0b51f644d63010_destroyer_wannacry.exe
2908	explorer.exe
2908	explorer.exe
2908	explorer.exe
2908	explorer.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeDebugPrivilege	2660	2025-01-31_3141e9897f750c7b5d0b51f644d63010_destroyer_wannacry.exe
Token: SeDebugPrivilege	2908	explorer.exe
Token: SeBackupPrivilege	2756	vssvc.exe
Token: SeRestorePrivilege	2756	vssvc.exe
Token: SeAuditPrivilege	2756	vssvc.exe
Token: SeIncreaseQuotaPrivilege	1296	WMIC.exe
Token: SeSecurityPrivilege	1296	WMIC.exe
Token: SeTakeOwnershipPrivilege	1296	WMIC.exe
Token: SeLoadDriverPrivilege	1296	WMIC.exe
Token: SeSystemProfilePrivilege	1296	WMIC.exe
Token: SeSystemtimePrivilege	1296	WMIC.exe
Token: SeProfSingleProcessPrivilege	1296	WMIC.exe
Token: SeIncBasePriorityPrivilege	1296	WMIC.exe
Token: SeCreatePagefilePrivilege	1296	WMIC.exe
Token: SeBackupPrivilege	1296	WMIC.exe
Token: SeRestorePrivilege	1296	WMIC.exe
Token: SeShutdownPrivilege	1296	WMIC.exe
Token: SeDebugPrivilege	1296	WMIC.exe
Token: SeSystemEnvironmentPrivilege	1296	WMIC.exe
Token: SeRemoteShutdownPrivilege	1296	WMIC.exe
Token: SeUndockPrivilege	1296	WMIC.exe
Token: SeManageVolumePrivilege	1296	WMIC.exe
Token: 33	1296	WMIC.exe
Token: 34	1296	WMIC.exe
Token: 35	1296	WMIC.exe
Token: SeIncreaseQuotaPrivilege	1296	WMIC.exe
Token: SeSecurityPrivilege	1296	WMIC.exe
Token: SeTakeOwnershipPrivilege	1296	WMIC.exe
Token: SeLoadDriverPrivilege	1296	WMIC.exe
Token: SeSystemProfilePrivilege	1296	WMIC.exe
Token: SeSystemtimePrivilege	1296	WMIC.exe
Token: SeProfSingleProcessPrivilege	1296	WMIC.exe
Token: SeIncBasePriorityPrivilege	1296	WMIC.exe
Token: SeCreatePagefilePrivilege	1296	WMIC.exe
Token: SeBackupPrivilege	1296	WMIC.exe
Token: SeRestorePrivilege	1296	WMIC.exe
Token: SeShutdownPrivilege	1296	WMIC.exe
Token: SeDebugPrivilege	1296	WMIC.exe
Token: SeSystemEnvironmentPrivilege	1296	WMIC.exe
Token: SeRemoteShutdownPrivilege	1296	WMIC.exe
Token: SeUndockPrivilege	1296	WMIC.exe
Token: SeManageVolumePrivilege	1296	WMIC.exe
Token: 33	1296	WMIC.exe
Token: 34	1296	WMIC.exe
Token: 35	1296	WMIC.exe
Token: SeBackupPrivilege	376	wbengine.exe
Token: SeRestorePrivilege	376	wbengine.exe
Token: SeSecurityPrivilege	376	wbengine.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2660 wrote to memory of 2908	2660	2025-01-31_3141e9897f750c7b5d0b51f644d63010_destroyer_wannacry.exe	30
PID 2660 wrote to memory of 2908	2660	2025-01-31_3141e9897f750c7b5d0b51f644d63010_destroyer_wannacry.exe	30
PID 2660 wrote to memory of 2908	2660	2025-01-31_3141e9897f750c7b5d0b51f644d63010_destroyer_wannacry.exe	30
PID 2908 wrote to memory of 592	2908	explorer.exe	32
PID 2908 wrote to memory of 592	2908	explorer.exe	32
PID 2908 wrote to memory of 592	2908	explorer.exe	32
PID 592 wrote to memory of 1960	592	cmd.exe	34
PID 592 wrote to memory of 1960	592	cmd.exe	34
PID 592 wrote to memory of 1960	592	cmd.exe	34
PID 592 wrote to memory of 1296	592	cmd.exe	37
PID 592 wrote to memory of 1296	592	cmd.exe	37
PID 592 wrote to memory of 1296	592	cmd.exe	37
PID 2908 wrote to memory of 796	2908	explorer.exe	39
PID 2908 wrote to memory of 796	2908	explorer.exe	39
PID 2908 wrote to memory of 796	2908	explorer.exe	39
PID 796 wrote to memory of 1048	796	cmd.exe	41
PID 796 wrote to memory of 1048	796	cmd.exe	41
PID 796 wrote to memory of 1048	796	cmd.exe	41
PID 796 wrote to memory of 1752	796	cmd.exe	42
PID 796 wrote to memory of 1752	796	cmd.exe	42
PID 796 wrote to memory of 1752	796	cmd.exe	42
PID 2908 wrote to memory of 1976	2908	explorer.exe	43
PID 2908 wrote to memory of 1976	2908	explorer.exe	43
PID 2908 wrote to memory of 1976	2908	explorer.exe	43
PID 1976 wrote to memory of 1980	1976	cmd.exe	45
PID 1976 wrote to memory of 1980	1976	cmd.exe	45
PID 1976 wrote to memory of 1980	1976	cmd.exe	45
PID 2908 wrote to memory of 316	2908	explorer.exe	49
PID 2908 wrote to memory of 316	2908	explorer.exe	49
PID 2908 wrote to memory of 316	2908	explorer.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\2025-01-31_3141e9897f750c7b5d0b51f644d63010_destroyer_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-31_3141e9897f750c7b5d0b51f644d63010_destroyer_wannacry.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2660
- C:\Users\Admin\AppData\Roaming\explorer.exe
  "C:\Users\Admin\AppData\Roaming\explorer.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - 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:2908
- - 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:592
  - - C:\Windows\system32\vssadmin.exe
      vssadmin delete shadows /all /quiet
      4⤵
      Interacts with shadow copies
      PID:1960
  - - C:\Windows\System32\Wbem\WMIC.exe
      wmic shadowcopy delete
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:1296
- - 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:796
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} bootstatuspolicy ignoreallfailures
      4⤵
      Modifies boot configuration data using bcdedit
      PID:1048
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} recoveryenabled no
      4⤵
      Modifies boot configuration data using bcdedit
      PID:1752
- - C:\Windows\System32\cmd.exe
    "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1976
  - - C:\Windows\system32\wbadmin.exe
      wbadmin delete catalog -quiet
      4⤵
      Deletes backup catalog
      PID:1980
- - C:\Windows\system32\NOTEPAD.EXE
    "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\open_me.txt
    3⤵
    - Opens file in notepad (likely ransom note)
    PID:316

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2756

C:\Windows\system32\wbengine.exe
"C:\Windows\system32\wbengine.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:376

C:\Windows\System32\vdsldr.exe
C:\Windows\System32\vdsldr.exe -Embedding
1⤵
PID:2320

C:\Windows\System32\vds.exe
C:\Windows\System32\vds.exe
1⤵
PID:2296

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

Modify Registry

T1112

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

Defacement

T1491

Inhibit System Recovery

T1490

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\explorer.exe

Filesize
35KB

MD5
3141e9897f750c7b5d0b51f644d63010

SHA1
812e7fb43952d07ea7b29f0f8e3406d408b56e77

SHA256
e86124d645258b8c4ae50bb4b8c93f3cfd8130b161ed7526bded020065e986f4

SHA512
67297eefd2d3a901abc2421cc762e08866ea4519bf191ddf765ee6949421feb8b2f37f3b414d7cbb5669cf26782ff7eb1541c6dcbf2815b196de8e3b1143c3af

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

Filesize
395B

MD5
73d41c5b2248045069472de6d89a1482

SHA1
7e5293e1d5e1e1958506585c3970fdd85b85b346

SHA256
05fda42614d7ca61b62d9b91434c2498f9ea73cdf28c62ad35615b8922855384

SHA512
030aacdde603acd7f84c02d0a6b00856b933b3cdf8987d275efd97466b3a5d0a8fd8001900d60fda52b9b2576ce1500fa0eed11aa25e11cb34d7ab030bdf52d6

Download Submit
memory/2660-0-0x000007FEF5753000-0x000007FEF5754000-memory.dmp

Filesize
4KB

Download
memory/2660-1-0x0000000001260000-0x0000000001270000-memory.dmp

Filesize
64KB

Download
memory/2908-7-0x0000000000DF0000-0x0000000000E00000-memory.dmp

Filesize
64KB

Download
memory/2908-15-0x000007FEF5750000-0x000007FEF613C000-memory.dmp

Filesize
9.9MB

Download
memory/2908-20-0x000007FEF5750000-0x000007FEF613C000-memory.dmp

Filesize
9.9MB

Download
memory/2908-489-0x000007FEF5750000-0x000007FEF613C000-memory.dmp

Filesize
9.9MB

Download