chaos | 3fafb23499cd2f44180d9b244d68494249ac892362b0bf4f2469d32081a411e0

Analysis

max time kernel
122s
max time network
123s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
15-05-2024 18:40

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General

Target

2024-05-15_c0a852ef9b726d21bd41ccb2062896cb_destroyer_wannacry.exe
Size

21KB
MD5

c0a852ef9b726d21bd41ccb2062896cb
SHA1

1bb8de6a0cf14c8a81647975f71cb3825cb18e42
SHA256

3fafb23499cd2f44180d9b244d68494249ac892362b0bf4f2469d32081a411e0
SHA512

c76ebdce894281d5e2c6bff455747a24b63068e4563be47755c2cfaccab92610bb209ed781b8209c40927a02b199d0890d268b1a4606cf0eaf4556470d03b92d
SSDEEP

384:m3MLWHn3kIceY1remPbArdip3NVcjuZJmr91CrQIek:Kn3kI+6mPbArMp9CjKmr9STek

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/1228-1-0x0000000000C00000-0x0000000000C0C000-memory.dmp	family_chaos
behavioral1/files/0x000e000000013420-4.dat	family_chaos
behavioral1/memory/2236-7-0x0000000000D20000-0x0000000000D2C000-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/1228-1-0x0000000000C00000-0x0000000000C0C000-memory.dmp	INDICATOR_SUSPICIOUS_GENRansomware
behavioral1/files/0x000e000000013420-4.dat	INDICATOR_SUSPICIOUS_GENRansomware
behavioral1/memory/2236-7-0x0000000000D20000-0x0000000000D2C000-memory.dmp	INDICATOR_SUSPICIOUS_GENRansomware

Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs

ransomware evasion

Inhibit System Recovery

T1490

pid	Process
1760	bcdedit.exe
2284	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
2256	wbadmin.exe

Drops startup file 3 IoCs

description	ioc	Process
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._bitch.txt	svchost.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.url	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2236	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\Contacts\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\Start Menu\Programs\Accessories\System Tools\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\Desktop\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Downloads\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\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\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\Videos\Sample Videos\desktop.ini	svchost.exe
File opened for modification	F:\$RECYCLE.BIN\S-1-5-21-3452737119-3959686427-228443150-1000\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\Videos\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Documents\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Searches\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Desktop\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Pictures\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Favorites\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\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\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\Saved Games\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\SendTo\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\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\Public\Music\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Favorites\Links\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Pictures\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Music\Sample Music\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 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
2896	vssadmin.exe

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
688	NOTEPAD.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2236	svchost.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
1228	2024-05-15_c0a852ef9b726d21bd41ccb2062896cb_destroyer_wannacry.exe
1228	2024-05-15_c0a852ef9b726d21bd41ccb2062896cb_destroyer_wannacry.exe
2236	svchost.exe
2236	svchost.exe
2236	svchost.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeDebugPrivilege	1228	2024-05-15_c0a852ef9b726d21bd41ccb2062896cb_destroyer_wannacry.exe
Token: SeDebugPrivilege	2236	svchost.exe
Token: SeBackupPrivilege	2000	vssvc.exe
Token: SeRestorePrivilege	2000	vssvc.exe
Token: SeAuditPrivilege	2000	vssvc.exe
Token: SeIncreaseQuotaPrivilege	1932	WMIC.exe
Token: SeSecurityPrivilege	1932	WMIC.exe
Token: SeTakeOwnershipPrivilege	1932	WMIC.exe
Token: SeLoadDriverPrivilege	1932	WMIC.exe
Token: SeSystemProfilePrivilege	1932	WMIC.exe
Token: SeSystemtimePrivilege	1932	WMIC.exe
Token: SeProfSingleProcessPrivilege	1932	WMIC.exe
Token: SeIncBasePriorityPrivilege	1932	WMIC.exe
Token: SeCreatePagefilePrivilege	1932	WMIC.exe
Token: SeBackupPrivilege	1932	WMIC.exe
Token: SeRestorePrivilege	1932	WMIC.exe
Token: SeShutdownPrivilege	1932	WMIC.exe
Token: SeDebugPrivilege	1932	WMIC.exe
Token: SeSystemEnvironmentPrivilege	1932	WMIC.exe
Token: SeRemoteShutdownPrivilege	1932	WMIC.exe
Token: SeUndockPrivilege	1932	WMIC.exe
Token: SeManageVolumePrivilege	1932	WMIC.exe
Token: 33	1932	WMIC.exe
Token: 34	1932	WMIC.exe
Token: 35	1932	WMIC.exe
Token: SeIncreaseQuotaPrivilege	1932	WMIC.exe
Token: SeSecurityPrivilege	1932	WMIC.exe
Token: SeTakeOwnershipPrivilege	1932	WMIC.exe
Token: SeLoadDriverPrivilege	1932	WMIC.exe
Token: SeSystemProfilePrivilege	1932	WMIC.exe
Token: SeSystemtimePrivilege	1932	WMIC.exe
Token: SeProfSingleProcessPrivilege	1932	WMIC.exe
Token: SeIncBasePriorityPrivilege	1932	WMIC.exe
Token: SeCreatePagefilePrivilege	1932	WMIC.exe
Token: SeBackupPrivilege	1932	WMIC.exe
Token: SeRestorePrivilege	1932	WMIC.exe
Token: SeShutdownPrivilege	1932	WMIC.exe
Token: SeDebugPrivilege	1932	WMIC.exe
Token: SeSystemEnvironmentPrivilege	1932	WMIC.exe
Token: SeRemoteShutdownPrivilege	1932	WMIC.exe
Token: SeUndockPrivilege	1932	WMIC.exe
Token: SeManageVolumePrivilege	1932	WMIC.exe
Token: 33	1932	WMIC.exe
Token: 34	1932	WMIC.exe
Token: 35	1932	WMIC.exe
Token: SeBackupPrivilege	2732	wbengine.exe
Token: SeRestorePrivilege	2732	wbengine.exe
Token: SeSecurityPrivilege	2732	wbengine.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1228 wrote to memory of 2236	1228	2024-05-15_c0a852ef9b726d21bd41ccb2062896cb_destroyer_wannacry.exe	28
PID 1228 wrote to memory of 2236	1228	2024-05-15_c0a852ef9b726d21bd41ccb2062896cb_destroyer_wannacry.exe	28
PID 1228 wrote to memory of 2236	1228	2024-05-15_c0a852ef9b726d21bd41ccb2062896cb_destroyer_wannacry.exe	28
PID 2236 wrote to memory of 2948	2236	svchost.exe	29
PID 2236 wrote to memory of 2948	2236	svchost.exe	29
PID 2236 wrote to memory of 2948	2236	svchost.exe	29
PID 2948 wrote to memory of 2896	2948	cmd.exe	31
PID 2948 wrote to memory of 2896	2948	cmd.exe	31
PID 2948 wrote to memory of 2896	2948	cmd.exe	31
PID 2948 wrote to memory of 1932	2948	cmd.exe	35
PID 2948 wrote to memory of 1932	2948	cmd.exe	35
PID 2948 wrote to memory of 1932	2948	cmd.exe	35
PID 2236 wrote to memory of 1660	2236	svchost.exe	37
PID 2236 wrote to memory of 1660	2236	svchost.exe	37
PID 2236 wrote to memory of 1660	2236	svchost.exe	37
PID 1660 wrote to memory of 1760	1660	cmd.exe	39
PID 1660 wrote to memory of 1760	1660	cmd.exe	39
PID 1660 wrote to memory of 1760	1660	cmd.exe	39
PID 1660 wrote to memory of 2284	1660	cmd.exe	40
PID 1660 wrote to memory of 2284	1660	cmd.exe	40
PID 1660 wrote to memory of 2284	1660	cmd.exe	40
PID 2236 wrote to memory of 2112	2236	svchost.exe	41
PID 2236 wrote to memory of 2112	2236	svchost.exe	41
PID 2236 wrote to memory of 2112	2236	svchost.exe	41
PID 2112 wrote to memory of 2256	2112	cmd.exe	43
PID 2112 wrote to memory of 2256	2112	cmd.exe	43
PID 2112 wrote to memory of 2256	2112	cmd.exe	43
PID 2236 wrote to memory of 688	2236	svchost.exe	47
PID 2236 wrote to memory of 688	2236	svchost.exe	47
PID 2236 wrote to memory of 688	2236	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\2024-05-15_c0a852ef9b726d21bd41ccb2062896cb_destroyer_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-15_c0a852ef9b726d21bd41ccb2062896cb_destroyer_wannacry.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1228
- 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:2236
- - 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:2948
  - - C:\Windows\system32\vssadmin.exe
      vssadmin delete shadows /all /quiet
      4⤵
      Interacts with shadow copies
      PID:2896
  - - C:\Windows\System32\Wbem\WMIC.exe
      wmic shadowcopy delete
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:1932
- - 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:1660
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} bootstatuspolicy ignoreallfailures
      4⤵
      Modifies boot configuration data using bcdedit
      PID:1760
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} recoveryenabled no
      4⤵
      Modifies boot configuration data using bcdedit
      PID:2284
- - C:\Windows\System32\cmd.exe
    "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2112
  - - C:\Windows\system32\wbadmin.exe
      wbadmin delete catalog -quiet
      4⤵
      Deletes backup catalog
      PID:2256
- - C:\Windows\system32\NOTEPAD.EXE
    "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\read_it._bitch.txt
    3⤵
    - Opens file in notepad (likely ransom note)
    PID:688

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2000

C:\Windows\system32\wbengine.exe
"C:\Windows\system32\wbengine.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2732

C:\Windows\System32\vdsldr.exe
C:\Windows\System32\vdsldr.exe -Embedding
1⤵
PID:1896

C:\Windows\System32\vds.exe
C:\Windows\System32\vds.exe
1⤵
PID:536

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

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\svchost.exe

Filesize
21KB

MD5
c0a852ef9b726d21bd41ccb2062896cb

SHA1
1bb8de6a0cf14c8a81647975f71cb3825cb18e42

SHA256
3fafb23499cd2f44180d9b244d68494249ac892362b0bf4f2469d32081a411e0

SHA512
c76ebdce894281d5e2c6bff455747a24b63068e4563be47755c2cfaccab92610bb209ed781b8209c40927a02b199d0890d268b1a4606cf0eaf4556470d03b92d

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

Filesize
35B

MD5
ee974bc4e3986ed8ff25153fcf1bdaf3

SHA1
c155a9a3ddb7730af9226256656519fe92be212c

SHA256
839263b5ee1a5f9b65fa221f294a60f414a3cf1f58204c9d7b51d1ddcbc74268

SHA512
cae5708511422415d6c3968895f9e559b6a2f317f75e7d7cae61cf32f565a7dd16516a92601064fb82f6bccd5153f03a7ad1f2c1396a8c3456547409340b4e9c

Download Submit
memory/1228-0-0x000007FEF5A33000-0x000007FEF5A34000-memory.dmp

Filesize
4KB

Download
memory/1228-1-0x0000000000C00000-0x0000000000C0C000-memory.dmp

Filesize
48KB

Download
memory/2236-7-0x0000000000D20000-0x0000000000D2C000-memory.dmp

Filesize
48KB

Download
memory/2236-11-0x000007FEF5A30000-0x000007FEF641C000-memory.dmp

Filesize
9.9MB

Download
memory/2236-76-0x000007FEF5A30000-0x000007FEF641C000-memory.dmp

Filesize
9.9MB

Download
memory/2236-77-0x000007FEF5A30000-0x000007FEF641C000-memory.dmp

Filesize
9.9MB

Download
memory/2236-78-0x000007FEF5A30000-0x000007FEF641C000-memory.dmp

Filesize
9.9MB

Download