chaos | 6d4fdb81ba3d3005f83e87f1b28fd48fbfe213a6dd164b95d939b9391faff82e

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31-01-2025 12:59

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27-01-2025 15:12

24-01-2025 15:20

22-01-2025 17:56

21-01-2025 17:40

21-01-2025 15:38

21-01-2025 14:09

Analysis

max time kernel
837s
max time network
841s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
21-01-2025 15:38

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General

Target

2025-01-21_07244d8bbd0721454ea97e696b6e85d3_wannacry.exe
Size

352KB
MD5

07244d8bbd0721454ea97e696b6e85d3
SHA1

06bc9b13360ac74b019cab18c96cc888474afc52
SHA256

6d4fdb81ba3d3005f83e87f1b28fd48fbfe213a6dd164b95d939b9391faff82e
SHA512

73c5fa9ee0bf8f91daa41f15932b0138329990d192bda0b75b90bd2f70fc8aaab28f509c9562355942a0563c418c96f99c0322e149e8c9b6d8ff83f14e3a8061
SSDEEP

6144:gV3r9iXlkEt9RGv5IKp/ntL2FJGAJRaWJ1rQPNDEDKx22LV:gglkEHshIKpvtg4AJRaWkp

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/1876-1-0x00000000012B0000-0x00000000012DC000-memory.dmp	family_chaos
behavioral1/files/0x0007000000012117-5.dat	family_chaos
behavioral1/memory/2804-7-0x0000000000EF0000-0x0000000000F1C000-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
2404	bcdedit.exe
1168	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
2936	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
2804	svchost.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	F:\$RECYCLE.BIN\S-1-5-21-3290804112-2823094203-3137964600-1000\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\Public\Music\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Desktop\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\Public\Music\Sample Music\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Contacts\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\Accessibility\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\Admin\Pictures\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\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\Public\Documents\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\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\AppData\Roaming\Microsoft\Windows\Start Menu\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\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\Recent\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\Administrative Tools\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Desktop\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\Public\Pictures\Sample Pictures\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\Favorites\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\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

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\\wen6zd265.jpg"	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
1868	vssadmin.exe

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
2284	NOTEPAD.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2804	svchost.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
1876	2025-01-21_07244d8bbd0721454ea97e696b6e85d3_wannacry.exe
1876	2025-01-21_07244d8bbd0721454ea97e696b6e85d3_wannacry.exe
1876	2025-01-21_07244d8bbd0721454ea97e696b6e85d3_wannacry.exe
2804	svchost.exe
2804	svchost.exe
2804	svchost.exe
2804	svchost.exe
2804	svchost.exe
2804	svchost.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeDebugPrivilege	1876	2025-01-21_07244d8bbd0721454ea97e696b6e85d3_wannacry.exe
Token: SeDebugPrivilege	2804	svchost.exe
Token: SeBackupPrivilege	2368	vssvc.exe
Token: SeRestorePrivilege	2368	vssvc.exe
Token: SeAuditPrivilege	2368	vssvc.exe
Token: SeIncreaseQuotaPrivilege	2524	WMIC.exe
Token: SeSecurityPrivilege	2524	WMIC.exe
Token: SeTakeOwnershipPrivilege	2524	WMIC.exe
Token: SeLoadDriverPrivilege	2524	WMIC.exe
Token: SeSystemProfilePrivilege	2524	WMIC.exe
Token: SeSystemtimePrivilege	2524	WMIC.exe
Token: SeProfSingleProcessPrivilege	2524	WMIC.exe
Token: SeIncBasePriorityPrivilege	2524	WMIC.exe
Token: SeCreatePagefilePrivilege	2524	WMIC.exe
Token: SeBackupPrivilege	2524	WMIC.exe
Token: SeRestorePrivilege	2524	WMIC.exe
Token: SeShutdownPrivilege	2524	WMIC.exe
Token: SeDebugPrivilege	2524	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2524	WMIC.exe
Token: SeRemoteShutdownPrivilege	2524	WMIC.exe
Token: SeUndockPrivilege	2524	WMIC.exe
Token: SeManageVolumePrivilege	2524	WMIC.exe
Token: 33	2524	WMIC.exe
Token: 34	2524	WMIC.exe
Token: 35	2524	WMIC.exe
Token: SeIncreaseQuotaPrivilege	2524	WMIC.exe
Token: SeSecurityPrivilege	2524	WMIC.exe
Token: SeTakeOwnershipPrivilege	2524	WMIC.exe
Token: SeLoadDriverPrivilege	2524	WMIC.exe
Token: SeSystemProfilePrivilege	2524	WMIC.exe
Token: SeSystemtimePrivilege	2524	WMIC.exe
Token: SeProfSingleProcessPrivilege	2524	WMIC.exe
Token: SeIncBasePriorityPrivilege	2524	WMIC.exe
Token: SeCreatePagefilePrivilege	2524	WMIC.exe
Token: SeBackupPrivilege	2524	WMIC.exe
Token: SeRestorePrivilege	2524	WMIC.exe
Token: SeShutdownPrivilege	2524	WMIC.exe
Token: SeDebugPrivilege	2524	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2524	WMIC.exe
Token: SeRemoteShutdownPrivilege	2524	WMIC.exe
Token: SeUndockPrivilege	2524	WMIC.exe
Token: SeManageVolumePrivilege	2524	WMIC.exe
Token: 33	2524	WMIC.exe
Token: 34	2524	WMIC.exe
Token: 35	2524	WMIC.exe
Token: SeBackupPrivilege	2968	wbengine.exe
Token: SeRestorePrivilege	2968	wbengine.exe
Token: SeSecurityPrivilege	2968	wbengine.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2284	NOTEPAD.EXE

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1876 wrote to memory of 2804	1876	2025-01-21_07244d8bbd0721454ea97e696b6e85d3_wannacry.exe	30
PID 1876 wrote to memory of 2804	1876	2025-01-21_07244d8bbd0721454ea97e696b6e85d3_wannacry.exe	30
PID 1876 wrote to memory of 2804	1876	2025-01-21_07244d8bbd0721454ea97e696b6e85d3_wannacry.exe	30
PID 2804 wrote to memory of 2872	2804	svchost.exe	31
PID 2804 wrote to memory of 2872	2804	svchost.exe	31
PID 2804 wrote to memory of 2872	2804	svchost.exe	31
PID 2872 wrote to memory of 1868	2872	cmd.exe	33
PID 2872 wrote to memory of 1868	2872	cmd.exe	33
PID 2872 wrote to memory of 1868	2872	cmd.exe	33
PID 2872 wrote to memory of 2524	2872	cmd.exe	37
PID 2872 wrote to memory of 2524	2872	cmd.exe	37
PID 2872 wrote to memory of 2524	2872	cmd.exe	37
PID 2804 wrote to memory of 1040	2804	svchost.exe	39
PID 2804 wrote to memory of 1040	2804	svchost.exe	39
PID 2804 wrote to memory of 1040	2804	svchost.exe	39
PID 1040 wrote to memory of 2404	1040	cmd.exe	41
PID 1040 wrote to memory of 2404	1040	cmd.exe	41
PID 1040 wrote to memory of 2404	1040	cmd.exe	41
PID 1040 wrote to memory of 1168	1040	cmd.exe	42
PID 1040 wrote to memory of 1168	1040	cmd.exe	42
PID 1040 wrote to memory of 1168	1040	cmd.exe	42
PID 2804 wrote to memory of 2236	2804	svchost.exe	43
PID 2804 wrote to memory of 2236	2804	svchost.exe	43
PID 2804 wrote to memory of 2236	2804	svchost.exe	43
PID 2236 wrote to memory of 2936	2236	cmd.exe	45
PID 2236 wrote to memory of 2936	2236	cmd.exe	45
PID 2236 wrote to memory of 2936	2236	cmd.exe	45
PID 2804 wrote to memory of 2284	2804	svchost.exe	49
PID 2804 wrote to memory of 2284	2804	svchost.exe	49
PID 2804 wrote to memory of 2284	2804	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\2025-01-21_07244d8bbd0721454ea97e696b6e85d3_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-21_07244d8bbd0721454ea97e696b6e85d3_wannacry.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1876
- 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)
  - Sets desktop wallpaper using registry
  - Suspicious behavior: AddClipboardFormatListener
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2804
- - 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:2872
  - - C:\Windows\system32\vssadmin.exe
      vssadmin delete shadows /all /quiet
      4⤵
      Interacts with shadow copies
      PID:1868
  - - C:\Windows\System32\Wbem\WMIC.exe
      wmic shadowcopy delete
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:2524
- - 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:1040
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} bootstatuspolicy ignoreallfailures
      4⤵
      Modifies boot configuration data using bcdedit
      PID:2404
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} recoveryenabled no
      4⤵
      Modifies boot configuration data using bcdedit
      PID:1168
- - C:\Windows\System32\cmd.exe
    "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2236
  - - C:\Windows\system32\wbadmin.exe
      wbadmin delete catalog -quiet
      4⤵
      Deletes backup catalog
      PID:2936
- - 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)
    - Suspicious use of FindShellTrayWindow
    PID:2284

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2368

C:\Windows\system32\wbengine.exe
"C:\Windows\system32\wbengine.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2968

C:\Windows\System32\vdsldr.exe
C:\Windows\System32\vdsldr.exe -Embedding
1⤵
PID:2156

C:\Windows\System32\vds.exe
C:\Windows\System32\vds.exe
1⤵
PID:972

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\svchost.exe

Filesize
352KB

MD5
07244d8bbd0721454ea97e696b6e85d3

SHA1
06bc9b13360ac74b019cab18c96cc888474afc52

SHA256
6d4fdb81ba3d3005f83e87f1b28fd48fbfe213a6dd164b95d939b9391faff82e

SHA512
73c5fa9ee0bf8f91daa41f15932b0138329990d192bda0b75b90bd2f70fc8aaab28f509c9562355942a0563c418c96f99c0322e149e8c9b6d8ff83f14e3a8061

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

Filesize
120B

MD5
8a4a98a8bfe11567dd16d06ddc364346

SHA1
ed94fda66affe31abe3002f8e702c3ddd5e37ba8

SHA256
48236cc3c7a1316f9f61201f2937c9653b9e6c8f6b038f9a94fbe7a3a3153cd3

SHA512
662ae12eee1180e34a41a4e2b018cae970fabeb446a9d8e82c692ca32d52ebadccc8a465b7dce4988af9f37d42dcfaec7b028e6a3c107b9b6cdc81e345770141

Download Submit
memory/1876-0-0x000007FEF5753000-0x000007FEF5754000-memory.dmp

Filesize
4KB

Download
memory/1876-1-0x00000000012B0000-0x00000000012DC000-memory.dmp

Filesize
176KB

Download
memory/2804-7-0x0000000000EF0000-0x0000000000F1C000-memory.dmp

Filesize
176KB

Download
memory/2804-57-0x000007FEF5750000-0x000007FEF613C000-memory.dmp

Filesize
9.9MB

Download
memory/2804-74-0x000007FEF5750000-0x000007FEF613C000-memory.dmp

Filesize
9.9MB

Download
memory/2804-75-0x000007FEF5750000-0x000007FEF613C000-memory.dmp

Filesize
9.9MB

Download