chaos | 83ebe9ac38941dfecead0c664b3517032ce8258f240f67699a6424290871cdee

Analysis

max time kernel
121s
max time network
122s
platform
windows7_x64
resource
win7-20240220-en
resource tags

arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
submitted
21-04-2024 22:34

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General

Target

2024-04-21_daf8e1d1c3778042cc92374eeba5af51_chaos_destroyer_wannacry.exe
Size

24KB
MD5

daf8e1d1c3778042cc92374eeba5af51
SHA1

8b9f991cb7e290ef86eb0494c4ef7e14607240ee
SHA256

83ebe9ac38941dfecead0c664b3517032ce8258f240f67699a6424290871cdee
SHA512

cc744eb077f4e8b7089a0484d9a1662b509dfbedf94558a7bdded52112558f5bfd29fc32cbbd15d03a2ba360d10fc0c76762cf3fe8cf9c20006fddd0e6a1cbce
SSDEEP

384:s3Mg/bqo2i2jQZ/rtcp3pUNqaJ2Gr91CJaPTt6oRUeU:Sqo2CZTypGUe/r9SyhaeU

Score

10^/10

chaos evasion ransomware spyware stealer

Malware Config

Extracted

Path

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

Ransom Note

(HACKED BY IRIS) Hello! All of your files have been encrypted! Your computer was infected with a ransomware virus. Your files have been encrypted and you won't be able to decrypt them without our help. What can I do to get my files back? You can buy our special decryption software, this software will allow you to recover all of your data and remove the ransomware from your computer.The price for the software is $350. Payment can be made in Monero only. What happens if i don't pay? If you decide not to pay the ransom, All of your files and everything on your device will be released on the dark web for people to buy/view and will be deleted from your cumputer forever. This also goes for any other devices that are on your network (WIFI). How do I buy Monero/XMR? Look up a youtube video on how to buy the coin, or visit localmonero.co to buy from a seller. Payment Type: Monero/Xmr Coin Amount: $350 USD In Monero/XMR Monero/XMR address to send to: 48FHcV21wn56hRt2kipV4tScT4RnVU5PyUoAqjRQbdLqEvKDg3E4Kgfc1yb7RLqG7RXz8N4sxQgdmEgrRoR8AAyh5wW3Ui4 For any questions contact: [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/1348-0-0x0000000000DE0000-0x0000000000DEC000-memory.dmp	family_chaos
behavioral1/files/0x000c00000001225d-5.dat	family_chaos
behavioral1/memory/2012-7-0x0000000001150000-0x000000000115C000-memory.dmp	family_chaos

Deletes shadow copies 2 TTPs
Ransomware often targets backup files to inhibit system recovery.
ransomware

File Deletion
T1070.004

Inhibit System Recovery
T1490

Detects command variations typically used by ransomware 3 IoCs

resource	yara_rule
behavioral1/memory/1348-0-0x0000000000DE0000-0x0000000000DEC000-memory.dmp	INDICATOR_SUSPICIOUS_GENRansomware
behavioral1/files/0x000c00000001225d-5.dat	INDICATOR_SUSPICIOUS_GENRansomware
behavioral1/memory/2012-7-0x0000000001150000-0x000000000115C000-memory.dmp	INDICATOR_SUSPICIOUS_GENRansomware

Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs

ransomware evasion

Inhibit System Recovery

T1490

pid	Process
1604	bcdedit.exe
864	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
3000	wbadmin.exe

Drops startup file 3 IoCs

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

Executes dropped EXE 1 IoCs

pid	Process
2012	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\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\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\Admin\Desktop\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Pictures\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Videos\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\System Tools\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 for United States\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\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\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\Favorites\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\Accessories\Desktop.ini	svchost.exe
File opened for modification	F:\$RECYCLE.BIN\S-1-5-21-2721934792-624042501-2768869379-1000\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\SendTo\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\Videos\Sample Videos\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Downloads\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\AppData\Roaming\Microsoft\Windows\Start Menu\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\Public\Pictures\Sample Pictures\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Desktop\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Links\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
2772	vssadmin.exe

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
1156	NOTEPAD.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2012	svchost.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
1348	2024-04-21_daf8e1d1c3778042cc92374eeba5af51_chaos_destroyer_wannacry.exe
1348	2024-04-21_daf8e1d1c3778042cc92374eeba5af51_chaos_destroyer_wannacry.exe
2012	svchost.exe
2012	svchost.exe
2012	svchost.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeDebugPrivilege	1348	2024-04-21_daf8e1d1c3778042cc92374eeba5af51_chaos_destroyer_wannacry.exe
Token: SeDebugPrivilege	2012	svchost.exe
Token: SeBackupPrivilege	348	vssvc.exe
Token: SeRestorePrivilege	348	vssvc.exe
Token: SeAuditPrivilege	348	vssvc.exe
Token: SeIncreaseQuotaPrivilege	1700	WMIC.exe
Token: SeSecurityPrivilege	1700	WMIC.exe
Token: SeTakeOwnershipPrivilege	1700	WMIC.exe
Token: SeLoadDriverPrivilege	1700	WMIC.exe
Token: SeSystemProfilePrivilege	1700	WMIC.exe
Token: SeSystemtimePrivilege	1700	WMIC.exe
Token: SeProfSingleProcessPrivilege	1700	WMIC.exe
Token: SeIncBasePriorityPrivilege	1700	WMIC.exe
Token: SeCreatePagefilePrivilege	1700	WMIC.exe
Token: SeBackupPrivilege	1700	WMIC.exe
Token: SeRestorePrivilege	1700	WMIC.exe
Token: SeShutdownPrivilege	1700	WMIC.exe
Token: SeDebugPrivilege	1700	WMIC.exe
Token: SeSystemEnvironmentPrivilege	1700	WMIC.exe
Token: SeRemoteShutdownPrivilege	1700	WMIC.exe
Token: SeUndockPrivilege	1700	WMIC.exe
Token: SeManageVolumePrivilege	1700	WMIC.exe
Token: 33	1700	WMIC.exe
Token: 34	1700	WMIC.exe
Token: 35	1700	WMIC.exe
Token: SeIncreaseQuotaPrivilege	1700	WMIC.exe
Token: SeSecurityPrivilege	1700	WMIC.exe
Token: SeTakeOwnershipPrivilege	1700	WMIC.exe
Token: SeLoadDriverPrivilege	1700	WMIC.exe
Token: SeSystemProfilePrivilege	1700	WMIC.exe
Token: SeSystemtimePrivilege	1700	WMIC.exe
Token: SeProfSingleProcessPrivilege	1700	WMIC.exe
Token: SeIncBasePriorityPrivilege	1700	WMIC.exe
Token: SeCreatePagefilePrivilege	1700	WMIC.exe
Token: SeBackupPrivilege	1700	WMIC.exe
Token: SeRestorePrivilege	1700	WMIC.exe
Token: SeShutdownPrivilege	1700	WMIC.exe
Token: SeDebugPrivilege	1700	WMIC.exe
Token: SeSystemEnvironmentPrivilege	1700	WMIC.exe
Token: SeRemoteShutdownPrivilege	1700	WMIC.exe
Token: SeUndockPrivilege	1700	WMIC.exe
Token: SeManageVolumePrivilege	1700	WMIC.exe
Token: 33	1700	WMIC.exe
Token: 34	1700	WMIC.exe
Token: 35	1700	WMIC.exe
Token: SeBackupPrivilege	1508	wbengine.exe
Token: SeRestorePrivilege	1508	wbengine.exe
Token: SeSecurityPrivilege	1508	wbengine.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1348 wrote to memory of 2012	1348	2024-04-21_daf8e1d1c3778042cc92374eeba5af51_chaos_destroyer_wannacry.exe	28
PID 1348 wrote to memory of 2012	1348	2024-04-21_daf8e1d1c3778042cc92374eeba5af51_chaos_destroyer_wannacry.exe	28
PID 1348 wrote to memory of 2012	1348	2024-04-21_daf8e1d1c3778042cc92374eeba5af51_chaos_destroyer_wannacry.exe	28
PID 2012 wrote to memory of 2636	2012	svchost.exe	30
PID 2012 wrote to memory of 2636	2012	svchost.exe	30
PID 2012 wrote to memory of 2636	2012	svchost.exe	30
PID 2636 wrote to memory of 2772	2636	cmd.exe	32
PID 2636 wrote to memory of 2772	2636	cmd.exe	32
PID 2636 wrote to memory of 2772	2636	cmd.exe	32
PID 2636 wrote to memory of 1700	2636	cmd.exe	35
PID 2636 wrote to memory of 1700	2636	cmd.exe	35
PID 2636 wrote to memory of 1700	2636	cmd.exe	35
PID 2012 wrote to memory of 1224	2012	svchost.exe	37
PID 2012 wrote to memory of 1224	2012	svchost.exe	37
PID 2012 wrote to memory of 1224	2012	svchost.exe	37
PID 1224 wrote to memory of 1604	1224	cmd.exe	39
PID 1224 wrote to memory of 1604	1224	cmd.exe	39
PID 1224 wrote to memory of 1604	1224	cmd.exe	39
PID 1224 wrote to memory of 864	1224	cmd.exe	40
PID 1224 wrote to memory of 864	1224	cmd.exe	40
PID 1224 wrote to memory of 864	1224	cmd.exe	40
PID 2012 wrote to memory of 1452	2012	svchost.exe	41
PID 2012 wrote to memory of 1452	2012	svchost.exe	41
PID 2012 wrote to memory of 1452	2012	svchost.exe	41
PID 1452 wrote to memory of 3000	1452	cmd.exe	43
PID 1452 wrote to memory of 3000	1452	cmd.exe	43
PID 1452 wrote to memory of 3000	1452	cmd.exe	43
PID 2012 wrote to memory of 1156	2012	svchost.exe	47
PID 2012 wrote to memory of 1156	2012	svchost.exe	47
PID 2012 wrote to memory of 1156	2012	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\2024-04-21_daf8e1d1c3778042cc92374eeba5af51_chaos_destroyer_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-21_daf8e1d1c3778042cc92374eeba5af51_chaos_destroyer_wannacry.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1348
- 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:2012
- - 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:2636
  - - C:\Windows\system32\vssadmin.exe
      vssadmin delete shadows /all /quiet
      4⤵
      Interacts with shadow copies
      PID:2772
  - - C:\Windows\System32\Wbem\WMIC.exe
      wmic shadowcopy delete
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:1700
- - 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:1224
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} bootstatuspolicy ignoreallfailures
      4⤵
      Modifies boot configuration data using bcdedit
      PID:1604
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} recoveryenabled no
      4⤵
      Modifies boot configuration data using bcdedit
      PID:864
- - C:\Windows\System32\cmd.exe
    "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1452
  - - C:\Windows\system32\wbadmin.exe
      wbadmin delete catalog -quiet
      4⤵
      Deletes backup catalog
      PID:3000
- - 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:1156

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:348

C:\Windows\system32\wbengine.exe
"C:\Windows\system32\wbengine.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1508

C:\Windows\System32\vdsldr.exe
C:\Windows\System32\vdsldr.exe -Embedding
1⤵
PID:2096

C:\Windows\System32\vds.exe
C:\Windows\System32\vds.exe
1⤵
PID:2300

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

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
daf8e1d1c3778042cc92374eeba5af51

SHA1
8b9f991cb7e290ef86eb0494c4ef7e14607240ee

SHA256
83ebe9ac38941dfecead0c664b3517032ce8258f240f67699a6424290871cdee

SHA512
cc744eb077f4e8b7089a0484d9a1662b509dfbedf94558a7bdded52112558f5bfd29fc32cbbd15d03a2ba360d10fc0c76762cf3fe8cf9c20006fddd0e6a1cbce

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

Filesize
1KB

MD5
0ffcc3ce1ccfa5b124220232c2441e6f

SHA1
ae62c3e836542b406c94c57ffff84b7ca02ea2fb

SHA256
2ccf991bf1de37d8b8bff84575075f29880d20e74a2295187bd6f0045d33292b

SHA512
9d47a5c3463cb9f06b4cdb724f2f86509c5d2fce4dca509f628a0c36ee910c6c31d3fc248e805d87787e23129426863792c1a2c9a1c71285d05ee7fec1852483

Download Submit
memory/1348-0-0x0000000000DE0000-0x0000000000DEC000-memory.dmp

Filesize
48KB

Download
memory/1348-1-0x000007FEF5690000-0x000007FEF607C000-memory.dmp

Filesize
9.9MB

Download
memory/1348-8-0x000007FEF5690000-0x000007FEF607C000-memory.dmp

Filesize
9.9MB

Download
memory/2012-7-0x0000000001150000-0x000000000115C000-memory.dmp

Filesize
48KB

Download
memory/2012-9-0x000007FEF5690000-0x000007FEF607C000-memory.dmp

Filesize
9.9MB

Download
memory/2012-11-0x000000001ADB0000-0x000000001AE30000-memory.dmp

Filesize
512KB

Download
memory/2012-491-0x000007FEF5690000-0x000007FEF607C000-memory.dmp

Filesize
9.9MB

Download
memory/2012-492-0x000000001ADB0000-0x000000001AE30000-memory.dmp

Filesize
512KB

Download