chaos | 0640261e1185fc1b8174975a96a60a54ff0b89c006dfba61a0e2e9256690fa67

Analysis

max time kernel
82s
max time network
133s
platform
windows10-2004_x64
resource
win10v2004-20240611-en
resource tags

arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
submitted
15-06-2024 11:25

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General

Target

2024-06-15_c59b146527f64f61bab43738e42a4584_wannacry.exe
Size

621KB
MD5

c59b146527f64f61bab43738e42a4584
SHA1

81335c9ae2895102ffab8dfade3435e617cb762b
SHA256

0640261e1185fc1b8174975a96a60a54ff0b89c006dfba61a0e2e9256690fa67
SHA512

601c3be9f390e51d61e27874073722cac440ae82243e78b6b14576d63e619968500ab16ea7352e4fb0851b46fa081372cf2153a6daf014842d9668d71b7ad611
SSDEEP

12288:D4cOG8Hjr47Ua00F2A71DdkA5gmzrM1TZYODC15rHAraEmCs3eBWKFrVHOX17c8:UqFwtZen1h

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 2 IoCs

resource	yara_rule
behavioral2/memory/404-0-0x0000000000DC0000-0x0000000000E62000-memory.dmp	family_chaos
behavioral2/files/0x000e000000023499-6.dat	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 2 IoCs

resource	yara_rule
behavioral2/memory/404-0-0x0000000000DC0000-0x0000000000E62000-memory.dmp	INDICATOR_SUSPICIOUS_GENRansomware
behavioral2/files/0x000e000000023499-6.dat	INDICATOR_SUSPICIOUS_GENRansomware

Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs

ransomware evasion

Inhibit System Recovery

T1490

pid	Process
4032	bcdedit.exe
220	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
3228	wbadmin.exe

Checks computer location settings 2 TTPs 2 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-200405930-3877336739-3533750831-1000\Control Panel\International\Geo\Nation	2024-06-15_c59b146527f64f61bab43738e42a4584_wannacry.exe
Key value queried	\REGISTRY\USER\S-1-5-21-200405930-3877336739-3533750831-1000\Control Panel\International\Geo\Nation	svchost.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\hacked.txt	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4536	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\Music\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\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	F:\$RECYCLE.BIN\S-1-5-21-200405930-3877336739-3533750831-1000\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\AccountPictures\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\Pictures\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Music\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Links\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Documents\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\Libraries\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\Saved Games\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\OneDrive\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\Admin\Pictures\Camera Roll\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\Start Menu\Programs\System Tools\Desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Desktop\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Pictures\Saved Pictures\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Favorites\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Documents\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Pictures\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\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-1-5-21-200405930-3877336739-3533750831-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\ux6vyegas.jpg"	svchost.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Checks SCSI registry key(s) 3 TTPs 4 IoCs

SCSI information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\DISK&VEN_DADY&PROD_HARDDISK\4&215468A5&0&000000	vds.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000\FriendlyName	vds.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CDROM&VEN_QEMU&PROD_QEMU_DVD-ROM\4&215468A5&0&010000	vds.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_QEMU&Prod_QEMU_DVD-ROM\4&215468a5&0&010000\FriendlyName	vds.exe

Interacts with shadow copies 2 TTPs 1 IoCs

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

ransomware

File Deletion

T1070.004

Inhibit System Recovery

T1490

pid	Process
1776	vssadmin.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-200405930-3877336739-3533750831-1000_Classes\Local Settings	svchost.exe

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
720	NOTEPAD.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
4536	svchost.exe

Suspicious behavior: EnumeratesProcesses 50 IoCs

pid	Process
404	2024-06-15_c59b146527f64f61bab43738e42a4584_wannacry.exe
404	2024-06-15_c59b146527f64f61bab43738e42a4584_wannacry.exe
404	2024-06-15_c59b146527f64f61bab43738e42a4584_wannacry.exe
404	2024-06-15_c59b146527f64f61bab43738e42a4584_wannacry.exe
404	2024-06-15_c59b146527f64f61bab43738e42a4584_wannacry.exe
404	2024-06-15_c59b146527f64f61bab43738e42a4584_wannacry.exe
404	2024-06-15_c59b146527f64f61bab43738e42a4584_wannacry.exe
404	2024-06-15_c59b146527f64f61bab43738e42a4584_wannacry.exe
404	2024-06-15_c59b146527f64f61bab43738e42a4584_wannacry.exe
404	2024-06-15_c59b146527f64f61bab43738e42a4584_wannacry.exe
404	2024-06-15_c59b146527f64f61bab43738e42a4584_wannacry.exe
404	2024-06-15_c59b146527f64f61bab43738e42a4584_wannacry.exe
404	2024-06-15_c59b146527f64f61bab43738e42a4584_wannacry.exe
404	2024-06-15_c59b146527f64f61bab43738e42a4584_wannacry.exe
404	2024-06-15_c59b146527f64f61bab43738e42a4584_wannacry.exe
404	2024-06-15_c59b146527f64f61bab43738e42a4584_wannacry.exe
404	2024-06-15_c59b146527f64f61bab43738e42a4584_wannacry.exe
404	2024-06-15_c59b146527f64f61bab43738e42a4584_wannacry.exe
404	2024-06-15_c59b146527f64f61bab43738e42a4584_wannacry.exe
404	2024-06-15_c59b146527f64f61bab43738e42a4584_wannacry.exe
404	2024-06-15_c59b146527f64f61bab43738e42a4584_wannacry.exe
404	2024-06-15_c59b146527f64f61bab43738e42a4584_wannacry.exe
404	2024-06-15_c59b146527f64f61bab43738e42a4584_wannacry.exe
404	2024-06-15_c59b146527f64f61bab43738e42a4584_wannacry.exe
4536	svchost.exe
4536	svchost.exe
4536	svchost.exe
4536	svchost.exe
4536	svchost.exe
4536	svchost.exe
4536	svchost.exe
4536	svchost.exe
4536	svchost.exe
4536	svchost.exe
4536	svchost.exe
4536	svchost.exe
4536	svchost.exe
4536	svchost.exe
4536	svchost.exe
4536	svchost.exe
4536	svchost.exe
4536	svchost.exe
4536	svchost.exe
4536	svchost.exe
4536	svchost.exe
4536	svchost.exe
4536	svchost.exe
4536	svchost.exe
4536	svchost.exe
4536	svchost.exe

Suspicious use of AdjustPrivilegeToken 50 IoCs

description	pid	Process
Token: SeDebugPrivilege	404	2024-06-15_c59b146527f64f61bab43738e42a4584_wannacry.exe
Token: SeDebugPrivilege	4536	svchost.exe
Token: SeBackupPrivilege	5036	vssvc.exe
Token: SeRestorePrivilege	5036	vssvc.exe
Token: SeAuditPrivilege	5036	vssvc.exe
Token: SeIncreaseQuotaPrivilege	5084	WMIC.exe
Token: SeSecurityPrivilege	5084	WMIC.exe
Token: SeTakeOwnershipPrivilege	5084	WMIC.exe
Token: SeLoadDriverPrivilege	5084	WMIC.exe
Token: SeSystemProfilePrivilege	5084	WMIC.exe
Token: SeSystemtimePrivilege	5084	WMIC.exe
Token: SeProfSingleProcessPrivilege	5084	WMIC.exe
Token: SeIncBasePriorityPrivilege	5084	WMIC.exe
Token: SeCreatePagefilePrivilege	5084	WMIC.exe
Token: SeBackupPrivilege	5084	WMIC.exe
Token: SeRestorePrivilege	5084	WMIC.exe
Token: SeShutdownPrivilege	5084	WMIC.exe
Token: SeDebugPrivilege	5084	WMIC.exe
Token: SeSystemEnvironmentPrivilege	5084	WMIC.exe
Token: SeRemoteShutdownPrivilege	5084	WMIC.exe
Token: SeUndockPrivilege	5084	WMIC.exe
Token: SeManageVolumePrivilege	5084	WMIC.exe
Token: 33	5084	WMIC.exe
Token: 34	5084	WMIC.exe
Token: 35	5084	WMIC.exe
Token: 36	5084	WMIC.exe
Token: SeIncreaseQuotaPrivilege	5084	WMIC.exe
Token: SeSecurityPrivilege	5084	WMIC.exe
Token: SeTakeOwnershipPrivilege	5084	WMIC.exe
Token: SeLoadDriverPrivilege	5084	WMIC.exe
Token: SeSystemProfilePrivilege	5084	WMIC.exe
Token: SeSystemtimePrivilege	5084	WMIC.exe
Token: SeProfSingleProcessPrivilege	5084	WMIC.exe
Token: SeIncBasePriorityPrivilege	5084	WMIC.exe
Token: SeCreatePagefilePrivilege	5084	WMIC.exe
Token: SeBackupPrivilege	5084	WMIC.exe
Token: SeRestorePrivilege	5084	WMIC.exe
Token: SeShutdownPrivilege	5084	WMIC.exe
Token: SeDebugPrivilege	5084	WMIC.exe
Token: SeSystemEnvironmentPrivilege	5084	WMIC.exe
Token: SeRemoteShutdownPrivilege	5084	WMIC.exe
Token: SeUndockPrivilege	5084	WMIC.exe
Token: SeManageVolumePrivilege	5084	WMIC.exe
Token: 33	5084	WMIC.exe
Token: 34	5084	WMIC.exe
Token: 35	5084	WMIC.exe
Token: 36	5084	WMIC.exe
Token: SeBackupPrivilege	1192	wbengine.exe
Token: SeRestorePrivilege	1192	wbengine.exe
Token: SeSecurityPrivilege	1192	wbengine.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 404 wrote to memory of 4536	404	2024-06-15_c59b146527f64f61bab43738e42a4584_wannacry.exe	91
PID 404 wrote to memory of 4536	404	2024-06-15_c59b146527f64f61bab43738e42a4584_wannacry.exe	91
PID 4536 wrote to memory of 3948	4536	svchost.exe	93
PID 4536 wrote to memory of 3948	4536	svchost.exe	93
PID 3948 wrote to memory of 1776	3948	cmd.exe	95
PID 3948 wrote to memory of 1776	3948	cmd.exe	95
PID 3948 wrote to memory of 5084	3948	cmd.exe	98
PID 3948 wrote to memory of 5084	3948	cmd.exe	98
PID 4536 wrote to memory of 208	4536	svchost.exe	100
PID 4536 wrote to memory of 208	4536	svchost.exe	100
PID 208 wrote to memory of 4032	208	cmd.exe	102
PID 208 wrote to memory of 4032	208	cmd.exe	102
PID 208 wrote to memory of 220	208	cmd.exe	103
PID 208 wrote to memory of 220	208	cmd.exe	103
PID 4536 wrote to memory of 3428	4536	svchost.exe	104
PID 4536 wrote to memory of 3428	4536	svchost.exe	104
PID 3428 wrote to memory of 3228	3428	cmd.exe	106
PID 3428 wrote to memory of 3228	3428	cmd.exe	106
PID 4536 wrote to memory of 720	4536	svchost.exe	110
PID 4536 wrote to memory of 720	4536	svchost.exe	110

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\2024-06-15_c59b146527f64f61bab43738e42a4584_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-15_c59b146527f64f61bab43738e42a4584_wannacry.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:404
- C:\Users\Admin\AppData\Roaming\svchost.exe
  "C:\Users\Admin\AppData\Roaming\svchost.exe"
  2⤵
  - Checks computer location settings
  - Drops startup file
  - Executes dropped EXE
  - Drops desktop.ini file(s)
  - Sets desktop wallpaper using registry
  - Modifies registry class
  - Suspicious behavior: AddClipboardFormatListener
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4536
- - 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:3948
  - - C:\Windows\system32\vssadmin.exe
      vssadmin delete shadows /all /quiet
      4⤵
      Interacts with shadow copies
      PID:1776
  - - C:\Windows\System32\Wbem\WMIC.exe
      wmic shadowcopy delete
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:5084
- - 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:208
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} bootstatuspolicy ignoreallfailures
      4⤵
      Modifies boot configuration data using bcdedit
      PID:4032
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} recoveryenabled no
      4⤵
      Modifies boot configuration data using bcdedit
      PID:220
- - C:\Windows\System32\cmd.exe
    "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:3428
  - - C:\Windows\system32\wbadmin.exe
      wbadmin delete catalog -quiet
      4⤵
      Deletes backup catalog
      PID:3228
- - C:\Windows\system32\NOTEPAD.EXE
    "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\hacked.txt
    3⤵
    - Opens file in notepad (likely ransom note)
    PID:720

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:5036

C:\Windows\system32\wbengine.exe
"C:\Windows\system32\wbengine.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1192

C:\Windows\System32\vdsldr.exe
C:\Windows\System32\vdsldr.exe -Embedding
1⤵
PID:2344

C:\Windows\System32\vds.exe
C:\Windows\System32\vds.exe
1⤵
- Checks SCSI registry key(s)
PID:4188

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

Indicator Removal

T1070

File Deletion

T1070.004

Modify Registry

T1112

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Peripheral Device Discovery

T1120

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
621KB

MD5
c59b146527f64f61bab43738e42a4584

SHA1
81335c9ae2895102ffab8dfade3435e617cb762b

SHA256
0640261e1185fc1b8174975a96a60a54ff0b89c006dfba61a0e2e9256690fa67

SHA512
601c3be9f390e51d61e27874073722cac440ae82243e78b6b14576d63e619968500ab16ea7352e4fb0851b46fa081372cf2153a6daf014842d9668d71b7ad611

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

Filesize
111B

MD5
16e3d81f6318d3cb18986b570cc137ed

SHA1
b00ec755320fa9078e84b6f40bb40ff77269242e

SHA256
a95d0e0978883c0e2355b739b59a09e4dea647a303a13a87ab855f56bad232f9

SHA512
05ae58d6ba4a51ef8ac78babc383aaac6f2aac69ee70474546cfcf3534c39f9e76113ad6e28752049a552f9afbd876b2450db33d2430eddcf0a8f219d9ab2e2d

Download Submit
memory/404-0-0x0000000000DC0000-0x0000000000E62000-memory.dmp

Filesize
648KB

Download
memory/404-1-0x00007FFBA4EC3000-0x00007FFBA4EC5000-memory.dmp

Filesize
8KB

Download
memory/4536-14-0x00007FFBA4EC0000-0x00007FFBA5981000-memory.dmp

Filesize
10.8MB

Download
memory/4536-68-0x00007FFBA4EC0000-0x00007FFBA5981000-memory.dmp

Filesize
10.8MB

Download