chaos | bae187a00945be87c8f627b2b6943360c67eec4cbf518d46790f6898f9f64e17

Analysis

max time kernel
117s
max time network
118s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
29/05/2024, 01:26

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General

Target

2024-05-29_bf6068f9bdc676df304694e1c181334f_chaos_destroyer_wannacry.exe
Size

24KB
MD5

bf6068f9bdc676df304694e1c181334f
SHA1

bb4da8a8a76714a63550496ba5dcc06eaec1162e
SHA256

bae187a00945be87c8f627b2b6943360c67eec4cbf518d46790f6898f9f64e17
SHA512

e4c614e71835e86c97928e9e1319d33f0a660dc1b70663d69d1d4eac77be4c1bfb9dfcb810e2540a3b1851052c6cf8f0080f84c96e5e924a8e7662792a5a676c
SSDEEP

384:q3Mg/bqo2tLRx+BZpk6u+qIJar91C8uKFR+WweV:Qqo2nxeZpk6uJAar9puKF4eV

Score

10^/10

chaos defense_evasion evasion execution impact ransomware spyware stealer

Malware Config

Extracted

Path

C:\Users\Admin\Documents\read_it.txt

Ransom Note

Wintz Ransomware Group & Partners | EST: 2016 >>> What happens? Your computers and servers are encrypted, private data was downloaded. We need only money, after payment we will give you a decryptor for the entire network and you will restore all the data. >>> Data leak First of all we have downloaded the entirety of your machine; quite litteraly everything. Including cookies, passwords, all files & anything else of meaning. If you fail to pay the desired ransomware within the time period provided your information will be sold on the darknet. The data is preloaded and will be published if you do not contact us. >>> What guarantees? We are not a politically motivated group and we do not need anything other than your money. If you pay, we will provide you the programs for decryption and we will delete your data. If we do not give you decrypters or we do not delete your data, no one will pay us in the future, this does not comply with our goals. We always keep our promises. >> HOW TO CONTACT US? Please EMail: [email protected] >> Warning! Recovery recommendations. We strongly recommend you to do not MODIFY or REPAIR your files, that will damage them.

Emails

[email protected]

Signatures

Chaos
Ransomware family first seen in June 2021.
ransomware chaos

Chaos Ransomware 3 IoCs

resource	yara_rule
behavioral1/memory/1464-1-0x00000000003E0000-0x00000000003EC000-memory.dmp	family_chaos
behavioral1/files/0x000c000000012671-5.dat	family_chaos
behavioral1/memory/1780-7-0x0000000000160000-0x000000000016C000-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/1464-1-0x00000000003E0000-0x00000000003EC000-memory.dmp	INDICATOR_SUSPICIOUS_GENRansomware
behavioral1/files/0x000c000000012671-5.dat	INDICATOR_SUSPICIOUS_GENRansomware
behavioral1/memory/1780-7-0x0000000000160000-0x000000000016C000-memory.dmp	INDICATOR_SUSPICIOUS_GENRansomware

Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs

ransomware evasion

Inhibit System Recovery

T1490

pid	Process
1916	bcdedit.exe
1220	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
680	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
1780	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	F:\$RECYCLE.BIN\S-1-5-21-1298544033-3225604241-2703760938-1000\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Music\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\Searches\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\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\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	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\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Maintenance\Desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\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\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\Internet Explorer\Quick Launch\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\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\Desktop\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Pictures\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Music\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\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\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\Public\Desktop\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Favorites\Links\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\System Tools\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
2952	vssadmin.exe

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
2108	NOTEPAD.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
1780	svchost.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
1464	2024-05-29_bf6068f9bdc676df304694e1c181334f_chaos_destroyer_wannacry.exe
1464	2024-05-29_bf6068f9bdc676df304694e1c181334f_chaos_destroyer_wannacry.exe
1780	svchost.exe
1780	svchost.exe
1780	svchost.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeDebugPrivilege	1464	2024-05-29_bf6068f9bdc676df304694e1c181334f_chaos_destroyer_wannacry.exe
Token: SeDebugPrivilege	1780	svchost.exe
Token: SeBackupPrivilege	1236	vssvc.exe
Token: SeRestorePrivilege	1236	vssvc.exe
Token: SeAuditPrivilege	1236	vssvc.exe
Token: SeIncreaseQuotaPrivilege	1756	WMIC.exe
Token: SeSecurityPrivilege	1756	WMIC.exe
Token: SeTakeOwnershipPrivilege	1756	WMIC.exe
Token: SeLoadDriverPrivilege	1756	WMIC.exe
Token: SeSystemProfilePrivilege	1756	WMIC.exe
Token: SeSystemtimePrivilege	1756	WMIC.exe
Token: SeProfSingleProcessPrivilege	1756	WMIC.exe
Token: SeIncBasePriorityPrivilege	1756	WMIC.exe
Token: SeCreatePagefilePrivilege	1756	WMIC.exe
Token: SeBackupPrivilege	1756	WMIC.exe
Token: SeRestorePrivilege	1756	WMIC.exe
Token: SeShutdownPrivilege	1756	WMIC.exe
Token: SeDebugPrivilege	1756	WMIC.exe
Token: SeSystemEnvironmentPrivilege	1756	WMIC.exe
Token: SeRemoteShutdownPrivilege	1756	WMIC.exe
Token: SeUndockPrivilege	1756	WMIC.exe
Token: SeManageVolumePrivilege	1756	WMIC.exe
Token: 33	1756	WMIC.exe
Token: 34	1756	WMIC.exe
Token: 35	1756	WMIC.exe
Token: SeIncreaseQuotaPrivilege	1756	WMIC.exe
Token: SeSecurityPrivilege	1756	WMIC.exe
Token: SeTakeOwnershipPrivilege	1756	WMIC.exe
Token: SeLoadDriverPrivilege	1756	WMIC.exe
Token: SeSystemProfilePrivilege	1756	WMIC.exe
Token: SeSystemtimePrivilege	1756	WMIC.exe
Token: SeProfSingleProcessPrivilege	1756	WMIC.exe
Token: SeIncBasePriorityPrivilege	1756	WMIC.exe
Token: SeCreatePagefilePrivilege	1756	WMIC.exe
Token: SeBackupPrivilege	1756	WMIC.exe
Token: SeRestorePrivilege	1756	WMIC.exe
Token: SeShutdownPrivilege	1756	WMIC.exe
Token: SeDebugPrivilege	1756	WMIC.exe
Token: SeSystemEnvironmentPrivilege	1756	WMIC.exe
Token: SeRemoteShutdownPrivilege	1756	WMIC.exe
Token: SeUndockPrivilege	1756	WMIC.exe
Token: SeManageVolumePrivilege	1756	WMIC.exe
Token: 33	1756	WMIC.exe
Token: 34	1756	WMIC.exe
Token: 35	1756	WMIC.exe
Token: SeBackupPrivilege	1104	wbengine.exe
Token: SeRestorePrivilege	1104	wbengine.exe
Token: SeSecurityPrivilege	1104	wbengine.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1464 wrote to memory of 1780	1464	2024-05-29_bf6068f9bdc676df304694e1c181334f_chaos_destroyer_wannacry.exe	28
PID 1464 wrote to memory of 1780	1464	2024-05-29_bf6068f9bdc676df304694e1c181334f_chaos_destroyer_wannacry.exe	28
PID 1464 wrote to memory of 1780	1464	2024-05-29_bf6068f9bdc676df304694e1c181334f_chaos_destroyer_wannacry.exe	28
PID 1780 wrote to memory of 2468	1780	svchost.exe	30
PID 1780 wrote to memory of 2468	1780	svchost.exe	30
PID 1780 wrote to memory of 2468	1780	svchost.exe	30
PID 2468 wrote to memory of 2952	2468	cmd.exe	32
PID 2468 wrote to memory of 2952	2468	cmd.exe	32
PID 2468 wrote to memory of 2952	2468	cmd.exe	32
PID 2468 wrote to memory of 1756	2468	cmd.exe	35
PID 2468 wrote to memory of 1756	2468	cmd.exe	35
PID 2468 wrote to memory of 1756	2468	cmd.exe	35
PID 1780 wrote to memory of 1980	1780	svchost.exe	37
PID 1780 wrote to memory of 1980	1780	svchost.exe	37
PID 1780 wrote to memory of 1980	1780	svchost.exe	37
PID 1980 wrote to memory of 1916	1980	cmd.exe	39
PID 1980 wrote to memory of 1916	1980	cmd.exe	39
PID 1980 wrote to memory of 1916	1980	cmd.exe	39
PID 1980 wrote to memory of 1220	1980	cmd.exe	40
PID 1980 wrote to memory of 1220	1980	cmd.exe	40
PID 1980 wrote to memory of 1220	1980	cmd.exe	40
PID 1780 wrote to memory of 1192	1780	svchost.exe	41
PID 1780 wrote to memory of 1192	1780	svchost.exe	41
PID 1780 wrote to memory of 1192	1780	svchost.exe	41
PID 1192 wrote to memory of 680	1192	cmd.exe	43
PID 1192 wrote to memory of 680	1192	cmd.exe	43
PID 1192 wrote to memory of 680	1192	cmd.exe	43
PID 1780 wrote to memory of 2108	1780	svchost.exe	47
PID 1780 wrote to memory of 2108	1780	svchost.exe	47
PID 1780 wrote to memory of 2108	1780	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\2024-05-29_bf6068f9bdc676df304694e1c181334f_chaos_destroyer_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-29_bf6068f9bdc676df304694e1c181334f_chaos_destroyer_wannacry.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1464
- 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:1780
- - 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:2468
  - - C:\Windows\system32\vssadmin.exe
      vssadmin delete shadows /all /quiet
      4⤵
      Interacts with shadow copies
      PID:2952
  - - C:\Windows\System32\Wbem\WMIC.exe
      wmic shadowcopy delete
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:1756
- - 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:1980
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} bootstatuspolicy ignoreallfailures
      4⤵
      Modifies boot configuration data using bcdedit
      PID:1916
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} recoveryenabled no
      4⤵
      Modifies boot configuration data using bcdedit
      PID:1220
- - C:\Windows\System32\cmd.exe
    "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1192
  - - C:\Windows\system32\wbadmin.exe
      wbadmin delete catalog -quiet
      4⤵
      Deletes backup catalog
      PID:680
- - 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)
    PID:2108

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1236

C:\Windows\system32\wbengine.exe
"C:\Windows\system32\wbengine.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1104

C:\Windows\System32\vdsldr.exe
C:\Windows\System32\vdsldr.exe -Embedding
1⤵
PID:1528

C:\Windows\System32\vds.exe
C:\Windows\System32\vds.exe
1⤵
PID:1684

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
24KB

MD5
bf6068f9bdc676df304694e1c181334f

SHA1
bb4da8a8a76714a63550496ba5dcc06eaec1162e

SHA256
bae187a00945be87c8f627b2b6943360c67eec4cbf518d46790f6898f9f64e17

SHA512
e4c614e71835e86c97928e9e1319d33f0a660dc1b70663d69d1d4eac77be4c1bfb9dfcb810e2540a3b1851052c6cf8f0080f84c96e5e924a8e7662792a5a676c

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

Filesize
1KB

MD5
b44032c617da293399ccb8020693ae76

SHA1
ce55aa98e23b722e50b6f8e5a7cc74b94686b42b

SHA256
2b5347316290b7ef6d68c19bf2860c8b5224e2bfc0cf3330942bf80b6c1751f4

SHA512
fc1efa6c20f076789db7c6141a7f4400ebb7428d719b5b192d25e22c3f0542a19acac38b4f814327a65e22fc60285af3e689dc60e91208dadfd0bb50f64abea2

Download Submit
memory/1464-0-0x000007FEF5773000-0x000007FEF5774000-memory.dmp

Filesize
4KB

Download
memory/1464-1-0x00000000003E0000-0x00000000003EC000-memory.dmp

Filesize
48KB

Download
memory/1780-7-0x0000000000160000-0x000000000016C000-memory.dmp

Filesize
48KB

Download
memory/1780-9-0x000007FEF5770000-0x000007FEF615C000-memory.dmp

Filesize
9.9MB

Download
memory/1780-18-0x000007FEF5770000-0x000007FEF615C000-memory.dmp

Filesize
9.9MB

Download
memory/1780-458-0x000007FEF5770000-0x000007FEF615C000-memory.dmp

Filesize
9.9MB

Download