chaos | 78529452630857c2edc60a55dd41771617d0c9e99d2cf276e39a5288f55160c8

Analysis

max time kernel
121s
max time network
126s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
29/10/2024, 18:06

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General

Target

dumbhumans.exe
Size

23KB
MD5

c6eb3aad7a5ba437d2e39c44d645aed2
SHA1

87b24045539b8db9ead35e462aef513602743ded
SHA256

78529452630857c2edc60a55dd41771617d0c9e99d2cf276e39a5288f55160c8
SHA512

cede2ff722843666b0f8cfcc3aa12f1f946b430d0db813afff326a1b4d9df9568e6843913bd9ee8497f312b3cad67f21e538786196e443239d2b8eb5efe92127
SSDEEP

384:Q3Mg/bqo2ucVzt2eaWCzpgDKF+98uJEr91CKxb+uteA:uqo2F52eanpgDKNyEr9xxb5eA

Score

10^/10

chaos defense_evasion execution impact ransomware spyware stealer

Malware Config

Extracted

Path

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

Family

chaos

Ransom Note

----> Chaos is multi language ransomware. Translate your note to any language <---- 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: 0.00138959 BTC Bitcoin Address: bc1q7njx7z489vx9444agzf759u4q46vfgtydzwyll

Signatures

Chaos
Ransomware family first seen in June 2021.
ransomware chaos

Chaos Ransomware 3 IoCs

resource	yara_rule
behavioral1/memory/1732-1-0x00000000000C0000-0x00000000000CC000-memory.dmp	family_chaos
behavioral1/files/0x000a000000012262-5.dat	family_chaos
behavioral1/memory/524-7-0x0000000001030000-0x000000000103C000-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

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
524	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\Videos\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\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Administrative Tools\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Documents\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\Pictures\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\Searches\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Videos\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\Internet Explorer\Quick Launch\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\Accessories\Accessibility\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\Documents\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\Libraries\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\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Pictures\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\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\Music\desktop.ini	svchost.exe
File opened for modification	F:\$RECYCLE.BIN\S-1-5-21-3692679935-4019334568-335155002-1000\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\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\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\Links\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

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
1728	vssadmin.exe

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
2092	NOTEPAD.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
524	svchost.exe

Suspicious behavior: EnumeratesProcesses 7 IoCs

pid	Process
1732	dumbhumans.exe
1732	dumbhumans.exe
1732	dumbhumans.exe
524	svchost.exe
524	svchost.exe
524	svchost.exe
524	svchost.exe

Suspicious use of AdjustPrivilegeToken 45 IoCs

description	pid	Process
Token: SeDebugPrivilege	1732	dumbhumans.exe
Token: SeDebugPrivilege	524	svchost.exe
Token: SeBackupPrivilege	620	vssvc.exe
Token: SeRestorePrivilege	620	vssvc.exe
Token: SeAuditPrivilege	620	vssvc.exe
Token: SeIncreaseQuotaPrivilege	1524	WMIC.exe
Token: SeSecurityPrivilege	1524	WMIC.exe
Token: SeTakeOwnershipPrivilege	1524	WMIC.exe
Token: SeLoadDriverPrivilege	1524	WMIC.exe
Token: SeSystemProfilePrivilege	1524	WMIC.exe
Token: SeSystemtimePrivilege	1524	WMIC.exe
Token: SeProfSingleProcessPrivilege	1524	WMIC.exe
Token: SeIncBasePriorityPrivilege	1524	WMIC.exe
Token: SeCreatePagefilePrivilege	1524	WMIC.exe
Token: SeBackupPrivilege	1524	WMIC.exe
Token: SeRestorePrivilege	1524	WMIC.exe
Token: SeShutdownPrivilege	1524	WMIC.exe
Token: SeDebugPrivilege	1524	WMIC.exe
Token: SeSystemEnvironmentPrivilege	1524	WMIC.exe
Token: SeRemoteShutdownPrivilege	1524	WMIC.exe
Token: SeUndockPrivilege	1524	WMIC.exe
Token: SeManageVolumePrivilege	1524	WMIC.exe
Token: 33	1524	WMIC.exe
Token: 34	1524	WMIC.exe
Token: 35	1524	WMIC.exe
Token: SeIncreaseQuotaPrivilege	1524	WMIC.exe
Token: SeSecurityPrivilege	1524	WMIC.exe
Token: SeTakeOwnershipPrivilege	1524	WMIC.exe
Token: SeLoadDriverPrivilege	1524	WMIC.exe
Token: SeSystemProfilePrivilege	1524	WMIC.exe
Token: SeSystemtimePrivilege	1524	WMIC.exe
Token: SeProfSingleProcessPrivilege	1524	WMIC.exe
Token: SeIncBasePriorityPrivilege	1524	WMIC.exe
Token: SeCreatePagefilePrivilege	1524	WMIC.exe
Token: SeBackupPrivilege	1524	WMIC.exe
Token: SeRestorePrivilege	1524	WMIC.exe
Token: SeShutdownPrivilege	1524	WMIC.exe
Token: SeDebugPrivilege	1524	WMIC.exe
Token: SeSystemEnvironmentPrivilege	1524	WMIC.exe
Token: SeRemoteShutdownPrivilege	1524	WMIC.exe
Token: SeUndockPrivilege	1524	WMIC.exe
Token: SeManageVolumePrivilege	1524	WMIC.exe
Token: 33	1524	WMIC.exe
Token: 34	1524	WMIC.exe
Token: 35	1524	WMIC.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 1732 wrote to memory of 524	1732	dumbhumans.exe	30
PID 1732 wrote to memory of 524	1732	dumbhumans.exe	30
PID 1732 wrote to memory of 524	1732	dumbhumans.exe	30
PID 524 wrote to memory of 2024	524	svchost.exe	33
PID 524 wrote to memory of 2024	524	svchost.exe	33
PID 524 wrote to memory of 2024	524	svchost.exe	33
PID 2024 wrote to memory of 1728	2024	cmd.exe	35
PID 2024 wrote to memory of 1728	2024	cmd.exe	35
PID 2024 wrote to memory of 1728	2024	cmd.exe	35
PID 2024 wrote to memory of 1524	2024	cmd.exe	39
PID 2024 wrote to memory of 1524	2024	cmd.exe	39
PID 2024 wrote to memory of 1524	2024	cmd.exe	39
PID 524 wrote to memory of 2092	524	svchost.exe	41
PID 524 wrote to memory of 2092	524	svchost.exe	41
PID 524 wrote to memory of 2092	524	svchost.exe	41

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\dumbhumans.exe
"C:\Users\Admin\AppData\Local\Temp\dumbhumans.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1732
- 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:524
- - 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:2024
  - - C:\Windows\system32\vssadmin.exe
      vssadmin delete shadows /all /quiet
      4⤵
      Interacts with shadow copies
      PID:1728
  - - C:\Windows\System32\Wbem\WMIC.exe
      wmic shadowcopy delete
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:1524
- - 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:2092

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:620

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

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

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
c6eb3aad7a5ba437d2e39c44d645aed2

SHA1
87b24045539b8db9ead35e462aef513602743ded

SHA256
78529452630857c2edc60a55dd41771617d0c9e99d2cf276e39a5288f55160c8

SHA512
cede2ff722843666b0f8cfcc3aa12f1f946b430d0db813afff326a1b4d9df9568e6843913bd9ee8497f312b3cad67f21e538786196e443239d2b8eb5efe92127

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

Filesize
965B

MD5
8405ca5488c5d8321e070794dd06f485

SHA1
104adc71cd3ca7924ccdc36a8d607eb8b45f0bf8

SHA256
e4cf6fbdc212d4b92cf3503cc1c38dd72eed77221b28e1e43b0fa5e8128dc2bf

SHA512
b24b0e14b09a1e7b796292b550b367e8e1bde7be9fcb4c7715f70bdb7b519d0fd6b2a8e780fdb71c219d2cb1818cc2856678c93f6e648e588236f4247ccd8e96

Download Submit
memory/524-7-0x0000000001030000-0x000000000103C000-memory.dmp

Filesize
48KB

Download
memory/524-15-0x000007FEF58E0000-0x000007FEF62CC000-memory.dmp

Filesize
9.9MB

Download
memory/524-18-0x000007FEF58E0000-0x000007FEF62CC000-memory.dmp

Filesize
9.9MB

Download
memory/524-502-0x000007FEF58E0000-0x000007FEF62CC000-memory.dmp

Filesize
9.9MB

Download
memory/524-503-0x000007FEF58E0000-0x000007FEF62CC000-memory.dmp

Filesize
9.9MB

Download
memory/1732-0-0x000007FEF58E3000-0x000007FEF58E4000-memory.dmp

Filesize
4KB

Download
memory/1732-1-0x00000000000C0000-0x00000000000CC000-memory.dmp

Filesize
48KB

Download