chaos | b66cf029d1671b246d1a4ccd86793f587bf8e4237460b892b8009e36a7bf0e68

Analysis

max time kernel
121s
max time network
122s
platform
windows7_x64
resource
win7-20241023-en
resource tags

arch:x64arch:x86image:win7-20241023-enlocale:en-usos:windows7-x64system
submitted
13-12-2024 04:21

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General

Target

2024-12-13_ee3cf7167280e28f0771ffedfb631a8c_chaos_destroyer_wannacry.exe
Size

23KB
MD5

ee3cf7167280e28f0771ffedfb631a8c
SHA1

d8f54832a4eb9157bc11fb2ec8c05b96fee4d52f
SHA256

b66cf029d1671b246d1a4ccd86793f587bf8e4237460b892b8009e36a7bf0e68
SHA512

f4df591404f3819457c86db32473610264105f0884fa6b99c904cee57f123ee6d58bb2740587df8130b202f1b8ee47271f7dabe8849c01fd72e71f1cdd882985
SSDEEP

384:R3Mg/bqo2TdYJB7RpfDKw/+98uJYr91CkT7kFWqe+C:Tqo2JoRpfDN/NyYr91kFHex

Score

10^/10

chaos defense_evasion evasion execution impact ransomware spyware stealer

Malware Config

Extracted

Path

C:\Users\Admin\Documents\LEIA-ME.txt

Family

chaos

Ransom Note

----> Chaos is multi language ransomware. Translate your note to any language <---- Todos os seus arquivos foram criptografados Seu computador foi infectado com um vírus ransomware. Seus arquivos foram criptografados e você não ser capaz de descriptografá-los sem nossa ajuda. O que posso fazer para recuperar meus arquivos? Você pode comprar nosso especial software de descriptografia, este software permitirá que você recupere todos os seus dados e remova o ransomware do seu computador. O preço do software é de 10 reais. O pagamento pode ser feito apenas em pix Como faço para pagar, tranfira neste pix copia e cola 00020126430014br.gov.bcb.pix0121leoboni2655@gmail.com520400005303986540510.005802BR5924Alessandra Santos Maciel6009Sao Paulo62290525tpBoqzTIGn3exNx6Jg6wSsGkP630421FC caso nao consiga chame neste email :[email protected]

Emails

[email protected]

Signatures

Chaos
Ransomware family first seen in June 2021.
ransomware chaos

Chaos Ransomware 3 IoCs

resource	yara_rule
behavioral1/memory/2464-1-0x00000000010B0000-0x00000000010BC000-memory.dmp	family_chaos
behavioral1/files/0x000c000000012281-5.dat	family_chaos
behavioral1/memory/2404-7-0x0000000000C80000-0x0000000000C8C000-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
780	bcdedit.exe
3036	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
2252	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\LEIA-ME.txt	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2404	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	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\Programs\Accessories\System Tools\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\Recent\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\Accessories\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-1-5-21-1163522206-1469769407-485553996-1000\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Downloads\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Contacts\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\Internet Explorer\Quick Launch\User Pinned\TaskBar\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\Public\Pictures\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Desktop\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Links\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Music\Sample Music\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\Accessibility\Desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Documents\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\Windows\Start Menu\Programs\Maintenance\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\Searches\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\Internet Explorer\Quick Launch\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\Music\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Videos\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Music\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Documents\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 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
1968	vssadmin.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2404	svchost.exe

Suspicious behavior: EnumeratesProcesses 7 IoCs

pid	Process
2464	2024-12-13_ee3cf7167280e28f0771ffedfb631a8c_chaos_destroyer_wannacry.exe
2464	2024-12-13_ee3cf7167280e28f0771ffedfb631a8c_chaos_destroyer_wannacry.exe
2464	2024-12-13_ee3cf7167280e28f0771ffedfb631a8c_chaos_destroyer_wannacry.exe
2404	svchost.exe
2404	svchost.exe
2404	svchost.exe
2404	svchost.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeDebugPrivilege	2464	2024-12-13_ee3cf7167280e28f0771ffedfb631a8c_chaos_destroyer_wannacry.exe
Token: SeDebugPrivilege	2404	svchost.exe
Token: SeBackupPrivilege	580	vssvc.exe
Token: SeRestorePrivilege	580	vssvc.exe
Token: SeAuditPrivilege	580	vssvc.exe
Token: SeIncreaseQuotaPrivilege	2304	WMIC.exe
Token: SeSecurityPrivilege	2304	WMIC.exe
Token: SeTakeOwnershipPrivilege	2304	WMIC.exe
Token: SeLoadDriverPrivilege	2304	WMIC.exe
Token: SeSystemProfilePrivilege	2304	WMIC.exe
Token: SeSystemtimePrivilege	2304	WMIC.exe
Token: SeProfSingleProcessPrivilege	2304	WMIC.exe
Token: SeIncBasePriorityPrivilege	2304	WMIC.exe
Token: SeCreatePagefilePrivilege	2304	WMIC.exe
Token: SeBackupPrivilege	2304	WMIC.exe
Token: SeRestorePrivilege	2304	WMIC.exe
Token: SeShutdownPrivilege	2304	WMIC.exe
Token: SeDebugPrivilege	2304	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2304	WMIC.exe
Token: SeRemoteShutdownPrivilege	2304	WMIC.exe
Token: SeUndockPrivilege	2304	WMIC.exe
Token: SeManageVolumePrivilege	2304	WMIC.exe
Token: 33	2304	WMIC.exe
Token: 34	2304	WMIC.exe
Token: 35	2304	WMIC.exe
Token: SeIncreaseQuotaPrivilege	2304	WMIC.exe
Token: SeSecurityPrivilege	2304	WMIC.exe
Token: SeTakeOwnershipPrivilege	2304	WMIC.exe
Token: SeLoadDriverPrivilege	2304	WMIC.exe
Token: SeSystemProfilePrivilege	2304	WMIC.exe
Token: SeSystemtimePrivilege	2304	WMIC.exe
Token: SeProfSingleProcessPrivilege	2304	WMIC.exe
Token: SeIncBasePriorityPrivilege	2304	WMIC.exe
Token: SeCreatePagefilePrivilege	2304	WMIC.exe
Token: SeBackupPrivilege	2304	WMIC.exe
Token: SeRestorePrivilege	2304	WMIC.exe
Token: SeShutdownPrivilege	2304	WMIC.exe
Token: SeDebugPrivilege	2304	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2304	WMIC.exe
Token: SeRemoteShutdownPrivilege	2304	WMIC.exe
Token: SeUndockPrivilege	2304	WMIC.exe
Token: SeManageVolumePrivilege	2304	WMIC.exe
Token: 33	2304	WMIC.exe
Token: 34	2304	WMIC.exe
Token: 35	2304	WMIC.exe
Token: SeBackupPrivilege	1560	wbengine.exe
Token: SeRestorePrivilege	1560	wbengine.exe
Token: SeSecurityPrivilege	1560	wbengine.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2464 wrote to memory of 2404	2464	2024-12-13_ee3cf7167280e28f0771ffedfb631a8c_chaos_destroyer_wannacry.exe	30
PID 2464 wrote to memory of 2404	2464	2024-12-13_ee3cf7167280e28f0771ffedfb631a8c_chaos_destroyer_wannacry.exe	30
PID 2464 wrote to memory of 2404	2464	2024-12-13_ee3cf7167280e28f0771ffedfb631a8c_chaos_destroyer_wannacry.exe	30
PID 2404 wrote to memory of 2676	2404	svchost.exe	32
PID 2404 wrote to memory of 2676	2404	svchost.exe	32
PID 2404 wrote to memory of 2676	2404	svchost.exe	32
PID 2676 wrote to memory of 1968	2676	cmd.exe	34
PID 2676 wrote to memory of 1968	2676	cmd.exe	34
PID 2676 wrote to memory of 1968	2676	cmd.exe	34
PID 2676 wrote to memory of 2304	2676	cmd.exe	37
PID 2676 wrote to memory of 2304	2676	cmd.exe	37
PID 2676 wrote to memory of 2304	2676	cmd.exe	37
PID 2404 wrote to memory of 1428	2404	svchost.exe	39
PID 2404 wrote to memory of 1428	2404	svchost.exe	39
PID 2404 wrote to memory of 1428	2404	svchost.exe	39
PID 1428 wrote to memory of 780	1428	cmd.exe	41
PID 1428 wrote to memory of 780	1428	cmd.exe	41
PID 1428 wrote to memory of 780	1428	cmd.exe	41
PID 1428 wrote to memory of 3036	1428	cmd.exe	42
PID 1428 wrote to memory of 3036	1428	cmd.exe	42
PID 1428 wrote to memory of 3036	1428	cmd.exe	42
PID 2404 wrote to memory of 448	2404	svchost.exe	43
PID 2404 wrote to memory of 448	2404	svchost.exe	43
PID 2404 wrote to memory of 448	2404	svchost.exe	43
PID 448 wrote to memory of 2252	448	cmd.exe	45
PID 448 wrote to memory of 2252	448	cmd.exe	45
PID 448 wrote to memory of 2252	448	cmd.exe	45
PID 2404 wrote to memory of 296	2404	svchost.exe	49
PID 2404 wrote to memory of 296	2404	svchost.exe	49
PID 2404 wrote to memory of 296	2404	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\2024-12-13_ee3cf7167280e28f0771ffedfb631a8c_chaos_destroyer_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2024-12-13_ee3cf7167280e28f0771ffedfb631a8c_chaos_destroyer_wannacry.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2464
- 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:2404
- - 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:2676
  - - C:\Windows\system32\vssadmin.exe
      vssadmin delete shadows /all /quiet
      4⤵
      Interacts with shadow copies
      PID:1968
  - - C:\Windows\System32\Wbem\WMIC.exe
      wmic shadowcopy delete
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:2304
- - 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:1428
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} bootstatuspolicy ignoreallfailures
      4⤵
      Modifies boot configuration data using bcdedit
      PID:780
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} recoveryenabled no
      4⤵
      Modifies boot configuration data using bcdedit
      PID:3036
- - C:\Windows\System32\cmd.exe
    "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:448
  - - C:\Windows\system32\wbadmin.exe
      wbadmin delete catalog -quiet
      4⤵
      Deletes backup catalog
      PID:2252
- - C:\Windows\system32\NOTEPAD.EXE
    "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\LEIA-ME.txt
    3⤵
    PID:296

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:580

C:\Windows\system32\wbengine.exe
"C:\Windows\system32\wbengine.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1560

C:\Windows\System32\vdsldr.exe
C:\Windows\System32\vdsldr.exe -Embedding
1⤵
PID:996

C:\Windows\System32\vds.exe
C:\Windows\System32\vds.exe
1⤵
PID:1776

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

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

Inhibit System Recovery

T1490

Replay Monitor

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Downloads

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

Filesize
23KB

MD5
ee3cf7167280e28f0771ffedfb631a8c

SHA1
d8f54832a4eb9157bc11fb2ec8c05b96fee4d52f

SHA256
b66cf029d1671b246d1a4ccd86793f587bf8e4237460b892b8009e36a7bf0e68

SHA512
f4df591404f3819457c86db32473610264105f0884fa6b99c904cee57f123ee6d58bb2740587df8130b202f1b8ee47271f7dabe8849c01fd72e71f1cdd882985

Download Submit
C:\Users\Admin\Documents\LEIA-ME.txt

Filesize
868B

MD5
db678c9756d9e4d1fc912a7b9b5aad2f

SHA1
3e260e5ed4e1ef0e51c910a4e0b94c62a3a24521

SHA256
da568b7fa0fc05e7c153e03db837143f4f327228492b9aa9a1f1229abdd878d0

SHA512
e8d24549ae2e33655d64f8fc4d689ccea0d8ed28a09bf57a0527d21d8e1fccb16af5ec5cd2bed38b6d21fc1dd644f9ee413d62c9c96414198d31130b654064f8

Download Submit
memory/2404-7-0x0000000000C80000-0x0000000000C8C000-memory.dmp

Filesize
48KB

Download
memory/2404-9-0x000007FEF6340000-0x000007FEF6D2C000-memory.dmp

Filesize
9.9MB

Download
memory/2404-16-0x000007FEF6340000-0x000007FEF6D2C000-memory.dmp

Filesize
9.9MB

Download
memory/2404-468-0x000007FEF6340000-0x000007FEF6D2C000-memory.dmp

Filesize
9.9MB

Download
memory/2464-0-0x000007FEF6343000-0x000007FEF6344000-memory.dmp

Filesize
4KB

Download
memory/2464-1-0x00000000010B0000-0x00000000010BC000-memory.dmp

Filesize
48KB

Download