chaos | 251502f58eaa174cc8e0644573a8f12e766d662b4c8d88db99080dc73748bd14

Analysis

max time kernel
118s
max time network
119s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
11/05/2024, 07:51

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General

Target

Free Nitro V1 (NICHT ÖFFNEN).exe
Size

23KB
MD5

15b098986a7466a4c5262f4d4034aa70
SHA1

85eef8e7bcbd7358ba4eeed6e2813b2eb394f32f
SHA256

251502f58eaa174cc8e0644573a8f12e766d662b4c8d88db99080dc73748bd14
SHA512

e48b29e292c6c89d28ea6b9fce4b7560fed82faa9848fcd9c227edab2f376b670e5a5b7b57a59e525456893858d5dbf7d1acd5a09f42004fea24799b5f736530
SSDEEP

384:O3Mg/bqo2tvxtivpa5vYsJ5r91Cj2bDuNem:sqo2rtMp5k5r9M2bIem

Score

10^/10

chaos defense_evasion 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 $170. 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: 0.003 BTC Bitcoin Address: bc1qsn8l9fjycnlx07fddkyp6wpsddey04jg6ffrk5

Signatures

Chaos
Ransomware family first seen in June 2021.
ransomware chaos

Chaos Ransomware 3 IoCs

resource	yara_rule
behavioral1/memory/2300-1-0x0000000000DF0000-0x0000000000DFC000-memory.dmp	family_chaos
behavioral1/files/0x000b0000000144e4-6.dat	family_chaos
behavioral1/memory/2212-7-0x0000000000840000-0x000000000084C000-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

Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs

ransomware evasion

Inhibit System Recovery

T1490

pid	Process
2760	bcdedit.exe
2768	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
1228	wbadmin.exe

Drops startup file 3 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\desktop.ini	Free Nitro V1.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\read_it.txt	Free Nitro V1.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Free Nitro V1.url	Free Nitro V1.exe

Executes dropped EXE 1 IoCs

pid	Process
2212	Free Nitro V1.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\Downloads\desktop.ini	Free Nitro V1.exe
File opened for modification	C:\Users\Admin\Saved Games\desktop.ini	Free Nitro V1.exe
File opened for modification	C:\Users\Admin\Searches\desktop.ini	Free Nitro V1.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Administrative Tools\desktop.ini	Free Nitro V1.exe
File opened for modification	C:\Users\Public\Pictures\Sample Pictures\desktop.ini	Free Nitro V1.exe
File opened for modification	C:\Users\Public\Documents\desktop.ini	Free Nitro V1.exe
File opened for modification	C:\Users\Admin\Favorites\desktop.ini	Free Nitro V1.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Libraries\desktop.ini	Free Nitro V1.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\desktop.ini	Free Nitro V1.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\desktop.ini	Free Nitro V1.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\desktop.ini	Free Nitro V1.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\System Tools\Desktop.ini	Free Nitro V1.exe
File opened for modification	C:\Users\Public\Music\Sample Music\desktop.ini	Free Nitro V1.exe
File opened for modification	F:\$RECYCLE.BIN\S-1-5-21-1298544033-3225604241-2703760938-1000\desktop.ini	Free Nitro V1.exe
File opened for modification	C:\Users\Admin\Links\desktop.ini	Free Nitro V1.exe
File opened for modification	C:\Users\Admin\Favorites\Links\desktop.ini	Free Nitro V1.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Maintenance\Desktop.ini	Free Nitro V1.exe
File opened for modification	C:\Users\Public\Pictures\desktop.ini	Free Nitro V1.exe
File opened for modification	C:\Users\Public\Music\desktop.ini	Free Nitro V1.exe
File opened for modification	C:\Users\Admin\Desktop\desktop.ini	Free Nitro V1.exe
File opened for modification	C:\Users\Admin\Music\desktop.ini	Free Nitro V1.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\SendTo\Desktop.ini	Free Nitro V1.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Accessibility\Desktop.ini	Free Nitro V1.exe
File opened for modification	C:\Users\Public\Videos\Sample Videos\desktop.ini	Free Nitro V1.exe
File opened for modification	C:\Users\Admin\Favorites\Links for United States\desktop.ini	Free Nitro V1.exe
File opened for modification	C:\Users\Admin\Videos\desktop.ini	Free Nitro V1.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar\desktop.ini	Free Nitro V1.exe
File opened for modification	C:\Users\Public\Videos\desktop.ini	Free Nitro V1.exe
File opened for modification	C:\Users\Public\Desktop\desktop.ini	Free Nitro V1.exe
File opened for modification	C:\Users\Admin\Contacts\desktop.ini	Free Nitro V1.exe
File opened for modification	C:\Users\Admin\Documents\desktop.ini	Free Nitro V1.exe
File opened for modification	C:\Users\Admin\Pictures\desktop.ini	Free Nitro V1.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\desktop.ini	Free Nitro V1.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Desktop.ini	Free Nitro V1.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
2472	vssadmin.exe

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
672	NOTEPAD.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2212	Free Nitro V1.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2300	Free Nitro V1 (NICHT ÖFFNEN).exe
2300	Free Nitro V1 (NICHT ÖFFNEN).exe
2212	Free Nitro V1.exe
2212	Free Nitro V1.exe
2212	Free Nitro V1.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeDebugPrivilege	2300	Free Nitro V1 (NICHT ÖFFNEN).exe
Token: SeDebugPrivilege	2212	Free Nitro V1.exe
Token: SeBackupPrivilege	2424	vssvc.exe
Token: SeRestorePrivilege	2424	vssvc.exe
Token: SeAuditPrivilege	2424	vssvc.exe
Token: SeIncreaseQuotaPrivilege	2772	WMIC.exe
Token: SeSecurityPrivilege	2772	WMIC.exe
Token: SeTakeOwnershipPrivilege	2772	WMIC.exe
Token: SeLoadDriverPrivilege	2772	WMIC.exe
Token: SeSystemProfilePrivilege	2772	WMIC.exe
Token: SeSystemtimePrivilege	2772	WMIC.exe
Token: SeProfSingleProcessPrivilege	2772	WMIC.exe
Token: SeIncBasePriorityPrivilege	2772	WMIC.exe
Token: SeCreatePagefilePrivilege	2772	WMIC.exe
Token: SeBackupPrivilege	2772	WMIC.exe
Token: SeRestorePrivilege	2772	WMIC.exe
Token: SeShutdownPrivilege	2772	WMIC.exe
Token: SeDebugPrivilege	2772	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2772	WMIC.exe
Token: SeRemoteShutdownPrivilege	2772	WMIC.exe
Token: SeUndockPrivilege	2772	WMIC.exe
Token: SeManageVolumePrivilege	2772	WMIC.exe
Token: 33	2772	WMIC.exe
Token: 34	2772	WMIC.exe
Token: 35	2772	WMIC.exe
Token: SeIncreaseQuotaPrivilege	2772	WMIC.exe
Token: SeSecurityPrivilege	2772	WMIC.exe
Token: SeTakeOwnershipPrivilege	2772	WMIC.exe
Token: SeLoadDriverPrivilege	2772	WMIC.exe
Token: SeSystemProfilePrivilege	2772	WMIC.exe
Token: SeSystemtimePrivilege	2772	WMIC.exe
Token: SeProfSingleProcessPrivilege	2772	WMIC.exe
Token: SeIncBasePriorityPrivilege	2772	WMIC.exe
Token: SeCreatePagefilePrivilege	2772	WMIC.exe
Token: SeBackupPrivilege	2772	WMIC.exe
Token: SeRestorePrivilege	2772	WMIC.exe
Token: SeShutdownPrivilege	2772	WMIC.exe
Token: SeDebugPrivilege	2772	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2772	WMIC.exe
Token: SeRemoteShutdownPrivilege	2772	WMIC.exe
Token: SeUndockPrivilege	2772	WMIC.exe
Token: SeManageVolumePrivilege	2772	WMIC.exe
Token: 33	2772	WMIC.exe
Token: 34	2772	WMIC.exe
Token: 35	2772	WMIC.exe
Token: SeBackupPrivilege	1760	wbengine.exe
Token: SeRestorePrivilege	1760	wbengine.exe
Token: SeSecurityPrivilege	1760	wbengine.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2300 wrote to memory of 2212	2300	Free Nitro V1 (NICHT ÖFFNEN).exe	28
PID 2300 wrote to memory of 2212	2300	Free Nitro V1 (NICHT ÖFFNEN).exe	28
PID 2300 wrote to memory of 2212	2300	Free Nitro V1 (NICHT ÖFFNEN).exe	28
PID 2212 wrote to memory of 2604	2212	Free Nitro V1.exe	30
PID 2212 wrote to memory of 2604	2212	Free Nitro V1.exe	30
PID 2212 wrote to memory of 2604	2212	Free Nitro V1.exe	30
PID 2604 wrote to memory of 2472	2604	cmd.exe	32
PID 2604 wrote to memory of 2472	2604	cmd.exe	32
PID 2604 wrote to memory of 2472	2604	cmd.exe	32
PID 2604 wrote to memory of 2772	2604	cmd.exe	35
PID 2604 wrote to memory of 2772	2604	cmd.exe	35
PID 2604 wrote to memory of 2772	2604	cmd.exe	35
PID 2212 wrote to memory of 2668	2212	Free Nitro V1.exe	37
PID 2212 wrote to memory of 2668	2212	Free Nitro V1.exe	37
PID 2212 wrote to memory of 2668	2212	Free Nitro V1.exe	37
PID 2668 wrote to memory of 2760	2668	cmd.exe	39
PID 2668 wrote to memory of 2760	2668	cmd.exe	39
PID 2668 wrote to memory of 2760	2668	cmd.exe	39
PID 2668 wrote to memory of 2768	2668	cmd.exe	40
PID 2668 wrote to memory of 2768	2668	cmd.exe	40
PID 2668 wrote to memory of 2768	2668	cmd.exe	40
PID 2212 wrote to memory of 2744	2212	Free Nitro V1.exe	41
PID 2212 wrote to memory of 2744	2212	Free Nitro V1.exe	41
PID 2212 wrote to memory of 2744	2212	Free Nitro V1.exe	41
PID 2744 wrote to memory of 1228	2744	cmd.exe	43
PID 2744 wrote to memory of 1228	2744	cmd.exe	43
PID 2744 wrote to memory of 1228	2744	cmd.exe	43
PID 2212 wrote to memory of 672	2212	Free Nitro V1.exe	47
PID 2212 wrote to memory of 672	2212	Free Nitro V1.exe	47
PID 2212 wrote to memory of 672	2212	Free Nitro V1.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\Free Nitro V1 (NICHT ÖFFNEN).exe
"C:\Users\Admin\AppData\Local\Temp\Free Nitro V1 (NICHT ÖFFNEN).exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2300
- C:\Users\Admin\AppData\Roaming\Free Nitro V1.exe
  "C:\Users\Admin\AppData\Roaming\Free Nitro V1.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:2212
- - 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:2604
  - - C:\Windows\system32\vssadmin.exe
      vssadmin delete shadows /all /quiet
      4⤵
      Interacts with shadow copies
      PID:2472
  - - C:\Windows\System32\Wbem\WMIC.exe
      wmic shadowcopy delete
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:2772
- - 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:2668
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} bootstatuspolicy ignoreallfailures
      4⤵
      Modifies boot configuration data using bcdedit
      PID:2760
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} recoveryenabled no
      4⤵
      Modifies boot configuration data using bcdedit
      PID:2768
- - C:\Windows\System32\cmd.exe
    "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2744
  - - C:\Windows\system32\wbadmin.exe
      wbadmin delete catalog -quiet
      4⤵
      Deletes backup catalog
      PID:1228
- - 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:672

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2424

C:\Windows\system32\wbengine.exe
"C:\Windows\system32\wbengine.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1760

C:\Windows\System32\vdsldr.exe
C:\Windows\System32\vdsldr.exe -Embedding
1⤵
PID:2000

C:\Windows\System32\vds.exe
C:\Windows\System32\vds.exe
1⤵
PID:2084

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

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Downloads

C:\Users\Admin\AppData\Roaming\Free Nitro V1.exe

Filesize
23KB

MD5
15b098986a7466a4c5262f4d4034aa70

SHA1
85eef8e7bcbd7358ba4eeed6e2813b2eb394f32f

SHA256
251502f58eaa174cc8e0644573a8f12e766d662b4c8d88db99080dc73748bd14

SHA512
e48b29e292c6c89d28ea6b9fce4b7560fed82faa9848fcd9c227edab2f376b670e5a5b7b57a59e525456893858d5dbf7d1acd5a09f42004fea24799b5f736530

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

Filesize
958B

MD5
c3100858c2ef177fbcb0be8a79c5d808

SHA1
f72d55236d91dc5f25ba7449e905b10f93550211

SHA256
3ced8d9de724facb6a6c15d7e83bb7e6da14b6621594044f106f06f392aa8365

SHA512
d5bc0605d51574de1d01d393255ba4fe1698afedd13042f26793fee939ec33b1d5411e401dd14dba9a14e25c4fc8b7d7a1906af0828d30f33fc35dac2f032f0c

Download Submit
memory/2212-7-0x0000000000840000-0x000000000084C000-memory.dmp

Filesize
48KB

Download
memory/2212-25-0x000007FEF5D70000-0x000007FEF675C000-memory.dmp

Filesize
9.9MB

Download
memory/2212-26-0x000007FEF5D70000-0x000007FEF675C000-memory.dmp

Filesize
9.9MB

Download
memory/2212-436-0x000007FEF5D70000-0x000007FEF675C000-memory.dmp

Filesize
9.9MB

Download
memory/2300-0-0x000007FEF5D73000-0x000007FEF5D74000-memory.dmp

Filesize
4KB

Download
memory/2300-1-0x0000000000DF0000-0x0000000000DFC000-memory.dmp

Filesize
48KB

Download