chaos | 0d9fcb8894240750cb5e4222ea78572aba6618eb5297c2069588ceb979d52d8b

Resubmissions

13-07-2024 09:54

240713-lxcvgawdmn 10

13-07-2024 09:52

240713-lv46yawdkj 10

13-07-2024 09:46

240713-lrz3tayajc 10

Analysis

max time kernel
837s
max time network
841s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
13-07-2024 09:52

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General

Target

2005110ee806a4fb40e00fe6c76af3527e3d66cd828723ee39529942812b8924.exe
Size

1.9MB
MD5

f0fd67c94f25de71c2fcdff4af0d2889
SHA1

2f4884f4e241d0bda353dc074ea1752e0b79af8c
SHA256

2005110ee806a4fb40e00fe6c76af3527e3d66cd828723ee39529942812b8924
SHA512

13986923eaef12dcbe1a0ce71ca47829ab1209df761c077c83981685fa61d01320372fb9a68d5b6622b597f443dccb125a2033aaf82857c873b1ec2b3e5ebdb0
SSDEEP

24576:6SndG2iSNjN2w9Os9cRfO/d8mT6c6aVqwPhUMelv1:/fJqsgXmgyJP

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
behavioral2/memory/3040-1-0x0000000000E10000-0x0000000000FF6000-memory.dmp	family_chaos
behavioral2/files/0x0004000000004ed7-6.dat	family_chaos
behavioral2/memory/3056-8-0x00000000008E0000-0x0000000000AC6000-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

Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs

ransomware evasion

Inhibit System Recovery

T1490

pid	Process
2416	bcdedit.exe
2420	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
2032	wbadmin.exe

Drops startup file 3 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Windows Defender.url	Windows Defender.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\desktop.ini	Windows Defender.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\傻逼，你被耍了！你的所有文件都被加密！.txt	Windows Defender.exe

Executes dropped EXE 1 IoCs

pid	Process
3056	Windows Defender.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\Public\Pictures\Sample Pictures\desktop.ini	Windows Defender.exe
File opened for modification	F:\$RECYCLE.BIN\S-1-5-21-3434294380-2554721341-1919518612-1000\desktop.ini	Windows Defender.exe
File opened for modification	C:\Users\Admin\Desktop\desktop.ini	Windows Defender.exe
File opened for modification	C:\Users\Admin\Contacts\desktop.ini	Windows Defender.exe
File opened for modification	C:\Users\Admin\Favorites\Links\desktop.ini	Windows Defender.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\desktop.ini	Windows Defender.exe
File opened for modification	C:\Users\Admin\Favorites\desktop.ini	Windows Defender.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Libraries\desktop.ini	Windows Defender.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Desktop.ini	Windows Defender.exe
File opened for modification	C:\Users\Public\Videos\desktop.ini	Windows Defender.exe
File opened for modification	C:\Users\Admin\Music\desktop.ini	Windows Defender.exe
File opened for modification	C:\Users\Admin\Saved Games\desktop.ini	Windows Defender.exe
File opened for modification	C:\Users\Admin\Favorites\Links for United States\desktop.ini	Windows Defender.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\SendTo\Desktop.ini	Windows Defender.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\desktop.ini	Windows Defender.exe
File opened for modification	C:\Users\Public\Music\desktop.ini	Windows Defender.exe
File opened for modification	C:\Users\Public\Documents\desktop.ini	Windows Defender.exe
File opened for modification	C:\Users\Public\Music\Sample Music\desktop.ini	Windows Defender.exe
File opened for modification	C:\Users\Admin\Downloads\desktop.ini	Windows Defender.exe
File opened for modification	C:\Users\Admin\Pictures\desktop.ini	Windows Defender.exe
File opened for modification	C:\Users\Admin\Videos\desktop.ini	Windows Defender.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\desktop.ini	Windows Defender.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\System Tools\Desktop.ini	Windows Defender.exe
File opened for modification	C:\Users\Admin\Searches\desktop.ini	Windows Defender.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar\desktop.ini	Windows Defender.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Maintenance\Desktop.ini	Windows Defender.exe
File opened for modification	C:\Users\Public\Pictures\desktop.ini	Windows Defender.exe
File opened for modification	C:\Users\Public\Desktop\desktop.ini	Windows Defender.exe
File opened for modification	C:\Users\Public\Videos\Sample Videos\desktop.ini	Windows Defender.exe
File opened for modification	C:\Users\Admin\Links\desktop.ini	Windows Defender.exe
File opened for modification	C:\Users\Admin\Documents\desktop.ini	Windows Defender.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\desktop.ini	Windows Defender.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Accessibility\Desktop.ini	Windows Defender.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Administrative Tools\desktop.ini	Windows Defender.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-1-5-21-3434294380-2554721341-1919518612-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\yle5vrdr6.jpg"	Windows Defender.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
2068	vssadmin.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
3056	Windows Defender.exe

Suspicious behavior: EnumeratesProcesses 7 IoCs

pid	Process
3040	2005110ee806a4fb40e00fe6c76af3527e3d66cd828723ee39529942812b8924.exe
3040	2005110ee806a4fb40e00fe6c76af3527e3d66cd828723ee39529942812b8924.exe
3040	2005110ee806a4fb40e00fe6c76af3527e3d66cd828723ee39529942812b8924.exe
3056	Windows Defender.exe
3056	Windows Defender.exe
3056	Windows Defender.exe
3056	Windows Defender.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeDebugPrivilege	3040	2005110ee806a4fb40e00fe6c76af3527e3d66cd828723ee39529942812b8924.exe
Token: SeDebugPrivilege	3056	Windows Defender.exe
Token: SeBackupPrivilege	2164	vssvc.exe
Token: SeRestorePrivilege	2164	vssvc.exe
Token: SeAuditPrivilege	2164	vssvc.exe
Token: SeIncreaseQuotaPrivilege	908	WMIC.exe
Token: SeSecurityPrivilege	908	WMIC.exe
Token: SeTakeOwnershipPrivilege	908	WMIC.exe
Token: SeLoadDriverPrivilege	908	WMIC.exe
Token: SeSystemProfilePrivilege	908	WMIC.exe
Token: SeSystemtimePrivilege	908	WMIC.exe
Token: SeProfSingleProcessPrivilege	908	WMIC.exe
Token: SeIncBasePriorityPrivilege	908	WMIC.exe
Token: SeCreatePagefilePrivilege	908	WMIC.exe
Token: SeBackupPrivilege	908	WMIC.exe
Token: SeRestorePrivilege	908	WMIC.exe
Token: SeShutdownPrivilege	908	WMIC.exe
Token: SeDebugPrivilege	908	WMIC.exe
Token: SeSystemEnvironmentPrivilege	908	WMIC.exe
Token: SeRemoteShutdownPrivilege	908	WMIC.exe
Token: SeUndockPrivilege	908	WMIC.exe
Token: SeManageVolumePrivilege	908	WMIC.exe
Token: 33	908	WMIC.exe
Token: 34	908	WMIC.exe
Token: 35	908	WMIC.exe
Token: SeIncreaseQuotaPrivilege	908	WMIC.exe
Token: SeSecurityPrivilege	908	WMIC.exe
Token: SeTakeOwnershipPrivilege	908	WMIC.exe
Token: SeLoadDriverPrivilege	908	WMIC.exe
Token: SeSystemProfilePrivilege	908	WMIC.exe
Token: SeSystemtimePrivilege	908	WMIC.exe
Token: SeProfSingleProcessPrivilege	908	WMIC.exe
Token: SeIncBasePriorityPrivilege	908	WMIC.exe
Token: SeCreatePagefilePrivilege	908	WMIC.exe
Token: SeBackupPrivilege	908	WMIC.exe
Token: SeRestorePrivilege	908	WMIC.exe
Token: SeShutdownPrivilege	908	WMIC.exe
Token: SeDebugPrivilege	908	WMIC.exe
Token: SeSystemEnvironmentPrivilege	908	WMIC.exe
Token: SeRemoteShutdownPrivilege	908	WMIC.exe
Token: SeUndockPrivilege	908	WMIC.exe
Token: SeManageVolumePrivilege	908	WMIC.exe
Token: 33	908	WMIC.exe
Token: 34	908	WMIC.exe
Token: 35	908	WMIC.exe
Token: SeBackupPrivilege	1276	wbengine.exe
Token: SeRestorePrivilege	1276	wbengine.exe
Token: SeSecurityPrivilege	1276	wbengine.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 3040 wrote to memory of 3056	3040	2005110ee806a4fb40e00fe6c76af3527e3d66cd828723ee39529942812b8924.exe	31
PID 3040 wrote to memory of 3056	3040	2005110ee806a4fb40e00fe6c76af3527e3d66cd828723ee39529942812b8924.exe	31
PID 3040 wrote to memory of 3056	3040	2005110ee806a4fb40e00fe6c76af3527e3d66cd828723ee39529942812b8924.exe	31
PID 3056 wrote to memory of 2916	3056	Windows Defender.exe	33
PID 3056 wrote to memory of 2916	3056	Windows Defender.exe	33
PID 3056 wrote to memory of 2916	3056	Windows Defender.exe	33
PID 2916 wrote to memory of 2068	2916	cmd.exe	35
PID 2916 wrote to memory of 2068	2916	cmd.exe	35
PID 2916 wrote to memory of 2068	2916	cmd.exe	35
PID 2916 wrote to memory of 908	2916	cmd.exe	38
PID 2916 wrote to memory of 908	2916	cmd.exe	38
PID 2916 wrote to memory of 908	2916	cmd.exe	38
PID 3056 wrote to memory of 1780	3056	Windows Defender.exe	40
PID 3056 wrote to memory of 1780	3056	Windows Defender.exe	40
PID 3056 wrote to memory of 1780	3056	Windows Defender.exe	40
PID 1780 wrote to memory of 2416	1780	cmd.exe	42
PID 1780 wrote to memory of 2416	1780	cmd.exe	42
PID 1780 wrote to memory of 2416	1780	cmd.exe	42
PID 1780 wrote to memory of 2420	1780	cmd.exe	43
PID 1780 wrote to memory of 2420	1780	cmd.exe	43
PID 1780 wrote to memory of 2420	1780	cmd.exe	43
PID 3056 wrote to memory of 1500	3056	Windows Defender.exe	44
PID 3056 wrote to memory of 1500	3056	Windows Defender.exe	44
PID 3056 wrote to memory of 1500	3056	Windows Defender.exe	44
PID 1500 wrote to memory of 2032	1500	cmd.exe	46
PID 1500 wrote to memory of 2032	1500	cmd.exe	46
PID 1500 wrote to memory of 2032	1500	cmd.exe	46
PID 3056 wrote to memory of 1872	3056	Windows Defender.exe	50
PID 3056 wrote to memory of 1872	3056	Windows Defender.exe	50
PID 3056 wrote to memory of 1872	3056	Windows Defender.exe	50

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\2005110ee806a4fb40e00fe6c76af3527e3d66cd828723ee39529942812b8924.exe
"C:\Users\Admin\AppData\Local\Temp\2005110ee806a4fb40e00fe6c76af3527e3d66cd828723ee39529942812b8924.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3040
- C:\Users\Admin\AppData\Roaming\Windows Defender.exe
  "C:\Users\Admin\AppData\Roaming\Windows Defender.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:3056
- - 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:2916
  - - C:\Windows\system32\vssadmin.exe
      vssadmin delete shadows /all /quiet
      4⤵
      Interacts with shadow copies
      PID:2068
  - - C:\Windows\System32\Wbem\WMIC.exe
      wmic shadowcopy delete
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:908
- - 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:1780
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} bootstatuspolicy ignoreallfailures
      4⤵
      Modifies boot configuration data using bcdedit
      PID:2416
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} recoveryenabled no
      4⤵
      Modifies boot configuration data using bcdedit
      PID:2420
- - C:\Windows\System32\cmd.exe
    "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1500
  - - C:\Windows\system32\wbadmin.exe
      wbadmin delete catalog -quiet
      4⤵
      Deletes backup catalog
      PID:2032
- - C:\Windows\system32\NOTEPAD.EXE
    "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\傻逼，你被耍了！你的所有文件都被加密！.txt
    3⤵
    PID:1872

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2164

C:\Windows\system32\wbengine.exe
"C:\Windows\system32\wbengine.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1276

C:\Windows\System32\vdsldr.exe
C:\Windows\System32\vdsldr.exe -Embedding
1⤵
PID:2372

C:\Windows\System32\vds.exe
C:\Windows\System32\vds.exe
1⤵
PID:2900

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

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\Windows Defender.exe

Filesize
1.9MB

MD5
f0fd67c94f25de71c2fcdff4af0d2889

SHA1
2f4884f4e241d0bda353dc074ea1752e0b79af8c

SHA256
2005110ee806a4fb40e00fe6c76af3527e3d66cd828723ee39529942812b8924

SHA512
13986923eaef12dcbe1a0ce71ca47829ab1209df761c077c83981685fa61d01320372fb9a68d5b6622b597f443dccb125a2033aaf82857c873b1ec2b3e5ebdb0

Download Submit
C:\Users\Admin\Documents\傻逼，你被耍了！你的所有文件都被加密！.txt

Filesize
470B

MD5
c83c2b8e368e928c7ab979f7bb44dac4

SHA1
4662ae6c1d2195a178bdeb23141df221181b9fdf

SHA256
d42f2a19a64f644085bb2411b58397f5ce8ff1d85857e9985163138964ea0251

SHA512
599f1cb6d607069544a492ed198fea62e51c5cefeb02ec33843cb63255705a2cf412467814493edf7a920b38ad71c65d8e6bd803b28b2f160e3b0727fc2cba2e

Download Submit
memory/3040-0-0x000007FEF5E03000-0x000007FEF5E04000-memory.dmp

Filesize
4KB

Download
memory/3040-1-0x0000000000E10000-0x0000000000FF6000-memory.dmp

Filesize
1.9MB

Download
memory/3040-2-0x000007FEF5E03000-0x000007FEF5E04000-memory.dmp

Filesize
4KB

Download
memory/3056-8-0x00000000008E0000-0x0000000000AC6000-memory.dmp

Filesize
1.9MB

Download
memory/3056-9-0x000007FEF5E00000-0x000007FEF67EC000-memory.dmp

Filesize
9.9MB

Download
memory/3056-21-0x000007FEF5E00000-0x000007FEF67EC000-memory.dmp

Filesize
9.9MB

Download
memory/3056-504-0x000007FEF5E00000-0x000007FEF67EC000-memory.dmp

Filesize
9.9MB

Download