chaos | 35196a8b628306eff560e2ec0228a51acfc7a232878b233b18de68806e9b55db

Analysis

max time kernel
117s
max time network
118s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
19-02-2024 08:48

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General

Target

2024-02-19_a9282aaf372aae86092f21917022850c_wannacry.exe
Size

551KB
MD5

a9282aaf372aae86092f21917022850c
SHA1

6d06e70de7c4478da89123dde9c0ea4dfb33c6e3
SHA256

35196a8b628306eff560e2ec0228a51acfc7a232878b233b18de68806e9b55db
SHA512

865bffacbd2bc67476144470165c119674c9b3736187757bba3157cc1f0eeafd747f08b1232aabbf0e1b76afc8e6bf9bdc2f6d5fd5eae7d38540a27e33883708
SSDEEP

12288:dsGmPS60AOrFQANpH5WH9d7W4mBm1wRc/8BThysr8E:dsB2udYBmMbZrT

Score

10^/10

chaos evasion ransomware spyware stealer

Malware Config

Extracted

Path

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

Ransom Note

---->hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh<---- 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 $1,500. Payment can be made in Bitcoin only. How do I pay, where do I get Bitcoin? Purchasing Bitcoin varies from country to country, you are best advised to do a quick google search yourself to find out how to buy Bitcoin. Many of our customers have reported these sites to be fast and reliable: Coinmama - hxxps://www.coinmama.com Bitpanda - hxxps://www.bitpanda.com Payment informationAmount: 0.0093766 BTC Bitcoin Address: bc1q50rfpqz5qxfulaqj4krv92ue7kzvugl460070j Contact! -Email/ [email protected] -Insta/ @mark_t_er -Telegram/ @haker6657

Emails

[email protected]

Signatures

Chaos
Ransomware family first seen in June 2021.
ransomware chaos

Chaos Ransomware 3 IoCs

resource	yara_rule
behavioral1/memory/1936-0-0x0000000001000000-0x0000000001090000-memory.dmp	family_chaos
behavioral1/files/0x000b00000001224d-4.dat	family_chaos
behavioral1/memory/2284-7-0x0000000000E80000-0x0000000000F10000-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/1936-0-0x0000000001000000-0x0000000001090000-memory.dmp	INDICATOR_SUSPICIOUS_GENRansomware
behavioral1/files/0x000b00000001224d-4.dat	INDICATOR_SUSPICIOUS_GENRansomware
behavioral1/memory/2284-7-0x0000000000E80000-0x0000000000F10000-memory.dmp	INDICATOR_SUSPICIOUS_GENRansomware

Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs

ransomware evasion

Inhibit System Recovery

T1490

pid	Process
2424	bcdedit.exe
2380	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
2272	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
2284	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\AppData\Roaming\Microsoft\Windows\SendTo\Desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Desktop\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Contacts\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Documents\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\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\Public\Pictures\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Links\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Pictures\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Saved Games\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\Public\Music\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Documents\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\Videos\Sample Videos\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\Administrative 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\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\Internet Explorer\Quick Launch\User Pinned\TaskBar\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\Searches\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\Accessories\System Tools\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\Desktop\desktop.ini	svchost.exe
File opened for modification	F:\$RECYCLE.BIN\S-1-5-21-3601492379-692465709-652514833-1000\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\Desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Videos\desktop.ini	svchost.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-1-5-21-3601492379-692465709-652514833-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\x2x9zy1w5.jpg"	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
1244	vssadmin.exe

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
2512	NOTEPAD.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2284	svchost.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
1936	2024-02-19_a9282aaf372aae86092f21917022850c_wannacry.exe
1936	2024-02-19_a9282aaf372aae86092f21917022850c_wannacry.exe
2284	svchost.exe
2284	svchost.exe
2284	svchost.exe
2284	svchost.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeDebugPrivilege	1936	2024-02-19_a9282aaf372aae86092f21917022850c_wannacry.exe
Token: SeDebugPrivilege	2284	svchost.exe
Token: SeBackupPrivilege	2652	vssvc.exe
Token: SeRestorePrivilege	2652	vssvc.exe
Token: SeAuditPrivilege	2652	vssvc.exe
Token: SeIncreaseQuotaPrivilege	1232	WMIC.exe
Token: SeSecurityPrivilege	1232	WMIC.exe
Token: SeTakeOwnershipPrivilege	1232	WMIC.exe
Token: SeLoadDriverPrivilege	1232	WMIC.exe
Token: SeSystemProfilePrivilege	1232	WMIC.exe
Token: SeSystemtimePrivilege	1232	WMIC.exe
Token: SeProfSingleProcessPrivilege	1232	WMIC.exe
Token: SeIncBasePriorityPrivilege	1232	WMIC.exe
Token: SeCreatePagefilePrivilege	1232	WMIC.exe
Token: SeBackupPrivilege	1232	WMIC.exe
Token: SeRestorePrivilege	1232	WMIC.exe
Token: SeShutdownPrivilege	1232	WMIC.exe
Token: SeDebugPrivilege	1232	WMIC.exe
Token: SeSystemEnvironmentPrivilege	1232	WMIC.exe
Token: SeRemoteShutdownPrivilege	1232	WMIC.exe
Token: SeUndockPrivilege	1232	WMIC.exe
Token: SeManageVolumePrivilege	1232	WMIC.exe
Token: 33	1232	WMIC.exe
Token: 34	1232	WMIC.exe
Token: 35	1232	WMIC.exe
Token: SeIncreaseQuotaPrivilege	1232	WMIC.exe
Token: SeSecurityPrivilege	1232	WMIC.exe
Token: SeTakeOwnershipPrivilege	1232	WMIC.exe
Token: SeLoadDriverPrivilege	1232	WMIC.exe
Token: SeSystemProfilePrivilege	1232	WMIC.exe
Token: SeSystemtimePrivilege	1232	WMIC.exe
Token: SeProfSingleProcessPrivilege	1232	WMIC.exe
Token: SeIncBasePriorityPrivilege	1232	WMIC.exe
Token: SeCreatePagefilePrivilege	1232	WMIC.exe
Token: SeBackupPrivilege	1232	WMIC.exe
Token: SeRestorePrivilege	1232	WMIC.exe
Token: SeShutdownPrivilege	1232	WMIC.exe
Token: SeDebugPrivilege	1232	WMIC.exe
Token: SeSystemEnvironmentPrivilege	1232	WMIC.exe
Token: SeRemoteShutdownPrivilege	1232	WMIC.exe
Token: SeUndockPrivilege	1232	WMIC.exe
Token: SeManageVolumePrivilege	1232	WMIC.exe
Token: 33	1232	WMIC.exe
Token: 34	1232	WMIC.exe
Token: 35	1232	WMIC.exe
Token: SeBackupPrivilege	1956	wbengine.exe
Token: SeRestorePrivilege	1956	wbengine.exe
Token: SeSecurityPrivilege	1956	wbengine.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1936 wrote to memory of 2284	1936	2024-02-19_a9282aaf372aae86092f21917022850c_wannacry.exe	28
PID 1936 wrote to memory of 2284	1936	2024-02-19_a9282aaf372aae86092f21917022850c_wannacry.exe	28
PID 1936 wrote to memory of 2284	1936	2024-02-19_a9282aaf372aae86092f21917022850c_wannacry.exe	28
PID 2284 wrote to memory of 876	2284	svchost.exe	30
PID 2284 wrote to memory of 876	2284	svchost.exe	30
PID 2284 wrote to memory of 876	2284	svchost.exe	30
PID 876 wrote to memory of 1244	876	cmd.exe	32
PID 876 wrote to memory of 1244	876	cmd.exe	32
PID 876 wrote to memory of 1244	876	cmd.exe	32
PID 876 wrote to memory of 1232	876	cmd.exe	35
PID 876 wrote to memory of 1232	876	cmd.exe	35
PID 876 wrote to memory of 1232	876	cmd.exe	35
PID 2284 wrote to memory of 2304	2284	svchost.exe	37
PID 2284 wrote to memory of 2304	2284	svchost.exe	37
PID 2284 wrote to memory of 2304	2284	svchost.exe	37
PID 2304 wrote to memory of 2424	2304	cmd.exe	39
PID 2304 wrote to memory of 2424	2304	cmd.exe	39
PID 2304 wrote to memory of 2424	2304	cmd.exe	39
PID 2304 wrote to memory of 2380	2304	cmd.exe	40
PID 2304 wrote to memory of 2380	2304	cmd.exe	40
PID 2304 wrote to memory of 2380	2304	cmd.exe	40
PID 2284 wrote to memory of 1972	2284	svchost.exe	41
PID 2284 wrote to memory of 1972	2284	svchost.exe	41
PID 2284 wrote to memory of 1972	2284	svchost.exe	41
PID 1972 wrote to memory of 2272	1972	cmd.exe	43
PID 1972 wrote to memory of 2272	1972	cmd.exe	43
PID 1972 wrote to memory of 2272	1972	cmd.exe	43
PID 2284 wrote to memory of 2512	2284	svchost.exe	47
PID 2284 wrote to memory of 2512	2284	svchost.exe	47
PID 2284 wrote to memory of 2512	2284	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\2024-02-19_a9282aaf372aae86092f21917022850c_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-19_a9282aaf372aae86092f21917022850c_wannacry.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1936
- 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)
  - Sets desktop wallpaper using registry
  - Suspicious behavior: AddClipboardFormatListener
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2284
- - 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:876
  - - C:\Windows\system32\vssadmin.exe
      vssadmin delete shadows /all /quiet
      4⤵
      Interacts with shadow copies
      PID:1244
  - - C:\Windows\System32\Wbem\WMIC.exe
      wmic shadowcopy delete
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:1232
- - 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:2304
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} bootstatuspolicy ignoreallfailures
      4⤵
      Modifies boot configuration data using bcdedit
      PID:2424
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} recoveryenabled no
      4⤵
      Modifies boot configuration data using bcdedit
      PID:2380
- - C:\Windows\System32\cmd.exe
    "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1972
  - - C:\Windows\system32\wbadmin.exe
      wbadmin delete catalog -quiet
      4⤵
      Deletes backup catalog
      PID:2272
- - 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:2512

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2652

C:\Windows\system32\wbengine.exe
"C:\Windows\system32\wbengine.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1956

C:\Windows\System32\vdsldr.exe
C:\Windows\System32\vdsldr.exe -Embedding
1⤵
PID:268

C:\Windows\System32\vds.exe
C:\Windows\System32\vds.exe
1⤵
PID:1280

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

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\svchost.exe

Filesize
551KB

MD5
a9282aaf372aae86092f21917022850c

SHA1
6d06e70de7c4478da89123dde9c0ea4dfb33c6e3

SHA256
35196a8b628306eff560e2ec0228a51acfc7a232878b233b18de68806e9b55db

SHA512
865bffacbd2bc67476144470165c119674c9b3736187757bba3157cc1f0eeafd747f08b1232aabbf0e1b76afc8e6bf9bdc2f6d5fd5eae7d38540a27e33883708

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

Filesize
1KB

MD5
caaa2593a0c8447ef2db9f9f5061c6a7

SHA1
137ceffaf50853f31ec6a99ef48d670af2bb65d5

SHA256
1bdb6e764c1bd29926c4a9b596fc4be4a73a37ae07ba03452c50e1c07765c6d9

SHA512
fff7ee411ed0e15caa4481df922c07ef30f3723d8814ac6a1972b2b62b06e080d28c3a5459e78eb7d4584c25913c0a3113f970ce4c096cd0563a0ff6deb65557

Download Submit
memory/1936-0-0x0000000001000000-0x0000000001090000-memory.dmp

Filesize
576KB

Download
memory/1936-1-0x000007FEF58E0000-0x000007FEF62CC000-memory.dmp

Filesize
9.9MB

Download
memory/1936-8-0x000007FEF58E0000-0x000007FEF62CC000-memory.dmp

Filesize
9.9MB

Download
memory/2284-7-0x0000000000E80000-0x0000000000F10000-memory.dmp

Filesize
576KB

Download
memory/2284-9-0x000007FEF58E0000-0x000007FEF62CC000-memory.dmp

Filesize
9.9MB

Download
memory/2284-11-0x00000000023B0000-0x0000000002430000-memory.dmp

Filesize
512KB

Download
memory/2284-463-0x000007FEF58E0000-0x000007FEF62CC000-memory.dmp

Filesize
9.9MB

Download
memory/2284-464-0x00000000023B0000-0x0000000002430000-memory.dmp

Filesize
512KB

Download