chaos | a5051d78658678877bc45dc86a93da4b38f751af50b6e16028df2e9d28a38fd6

Analysis

max time kernel
120s
max time network
120s
platform
windows7_x64
resource
win7-20240220-en
resource tags

arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
submitted
16-05-2024 18:17

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General

Target

FREENITRO V1.exe
Size

114KB
MD5

cc3870b55eb1372465d209f2f8cef7db
SHA1

1de3efe840669876905143be9f2cb031441bb801
SHA256

a5051d78658678877bc45dc86a93da4b38f751af50b6e16028df2e9d28a38fd6
SHA512

bafaf8f60c440e7c75cad29832ff3d8a67310cac231fb74cbc3689155471bfa71302ddd6e10cc39dafe97d82d2e39c15509a107da0d882e9315cbb04d2f45f6d
SSDEEP

3072:PoMUVMKr9GL2oAxIetzFDyHQlYBX2UZHqJEumjS48zCTFsj:ipr9GL2o05yIYBBZKDmGr

Score

10^/10

chaos defense_evasion evasion execution impact ransomware spyware stealer

Malware Config

Extracted

Path

C:\Users\Admin\Documents\UNLOCK READ.txt

Ransom Note

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 ANY CONTACT TELEGRAM @WILLIAM07100

Signatures

Chaos
Ransomware family first seen in June 2021.
ransomware chaos

Chaos Ransomware 3 IoCs

resource	yara_rule
behavioral1/memory/3036-1-0x0000000001290000-0x00000000012B2000-memory.dmp	family_chaos
behavioral1/files/0x000b000000015d61-5.dat	family_chaos
behavioral1/memory/2944-7-0x00000000009A0000-0x00000000009C2000-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
1848	bcdedit.exe
1264	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
2336	wbadmin.exe

Drops startup file 3 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\freenitro.url	freenitro.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\desktop.ini	freenitro.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\UNLOCK READ.txt	freenitro.exe

Executes dropped EXE 1 IoCs

pid	Process
2944	freenitro.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	freenitro.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Maintenance\Desktop.ini	freenitro.exe
File opened for modification	C:\Users\Public\Music\Sample Music\desktop.ini	freenitro.exe
File opened for modification	C:\Users\Admin\Desktop\desktop.ini	freenitro.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\desktop.ini	freenitro.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Libraries\desktop.ini	freenitro.exe
File opened for modification	C:\Users\Public\Videos\desktop.ini	freenitro.exe
File opened for modification	C:\Users\Admin\Favorites\Links\desktop.ini	freenitro.exe
File opened for modification	C:\Users\Admin\Contacts\desktop.ini	freenitro.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\desktop.ini	freenitro.exe
File opened for modification	C:\Users\Public\Music\desktop.ini	freenitro.exe
File opened for modification	C:\Users\Admin\Links\desktop.ini	freenitro.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\System Tools\Desktop.ini	freenitro.exe
File opened for modification	C:\Users\Admin\Saved Games\desktop.ini	freenitro.exe
File opened for modification	C:\Users\Admin\Music\desktop.ini	freenitro.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Desktop.ini	freenitro.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Accessibility\Desktop.ini	freenitro.exe
File opened for modification	C:\Users\Public\Pictures\desktop.ini	freenitro.exe
File opened for modification	C:\Users\Public\Videos\Sample Videos\desktop.ini	freenitro.exe
File opened for modification	C:\Users\Public\Desktop\desktop.ini	freenitro.exe
File opened for modification	C:\Users\Admin\Documents\desktop.ini	freenitro.exe
File opened for modification	C:\Users\Admin\Pictures\desktop.ini	freenitro.exe
File opened for modification	C:\Users\Admin\Favorites\Links for United States\desktop.ini	freenitro.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\desktop.ini	freenitro.exe
File opened for modification	F:\$RECYCLE.BIN\S-1-5-21-2721934792-624042501-2768869379-1000\desktop.ini	freenitro.exe
File opened for modification	C:\Users\Admin\Videos\desktop.ini	freenitro.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar\desktop.ini	freenitro.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Administrative Tools\desktop.ini	freenitro.exe
File opened for modification	C:\Users\Admin\Searches\desktop.ini	freenitro.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\desktop.ini	freenitro.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\SendTo\Desktop.ini	freenitro.exe
File opened for modification	C:\Users\Public\Documents\desktop.ini	freenitro.exe
File opened for modification	C:\Users\Public\Pictures\Sample Pictures\desktop.ini	freenitro.exe
File opened for modification	C:\Users\Admin\Favorites\desktop.ini	freenitro.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-1-5-21-2721934792-624042501-2768869379-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\if5dsbu93.jpg"	freenitro.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
1552	vssadmin.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2944	freenitro.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
3036	FREENITRO V1.exe
3036	FREENITRO V1.exe
2944	freenitro.exe
2944	freenitro.exe
2944	freenitro.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeDebugPrivilege	3036	FREENITRO V1.exe
Token: SeDebugPrivilege	2944	freenitro.exe
Token: SeBackupPrivilege	1560	vssvc.exe
Token: SeRestorePrivilege	1560	vssvc.exe
Token: SeAuditPrivilege	1560	vssvc.exe
Token: SeIncreaseQuotaPrivilege	1688	WMIC.exe
Token: SeSecurityPrivilege	1688	WMIC.exe
Token: SeTakeOwnershipPrivilege	1688	WMIC.exe
Token: SeLoadDriverPrivilege	1688	WMIC.exe
Token: SeSystemProfilePrivilege	1688	WMIC.exe
Token: SeSystemtimePrivilege	1688	WMIC.exe
Token: SeProfSingleProcessPrivilege	1688	WMIC.exe
Token: SeIncBasePriorityPrivilege	1688	WMIC.exe
Token: SeCreatePagefilePrivilege	1688	WMIC.exe
Token: SeBackupPrivilege	1688	WMIC.exe
Token: SeRestorePrivilege	1688	WMIC.exe
Token: SeShutdownPrivilege	1688	WMIC.exe
Token: SeDebugPrivilege	1688	WMIC.exe
Token: SeSystemEnvironmentPrivilege	1688	WMIC.exe
Token: SeRemoteShutdownPrivilege	1688	WMIC.exe
Token: SeUndockPrivilege	1688	WMIC.exe
Token: SeManageVolumePrivilege	1688	WMIC.exe
Token: 33	1688	WMIC.exe
Token: 34	1688	WMIC.exe
Token: 35	1688	WMIC.exe
Token: SeIncreaseQuotaPrivilege	1688	WMIC.exe
Token: SeSecurityPrivilege	1688	WMIC.exe
Token: SeTakeOwnershipPrivilege	1688	WMIC.exe
Token: SeLoadDriverPrivilege	1688	WMIC.exe
Token: SeSystemProfilePrivilege	1688	WMIC.exe
Token: SeSystemtimePrivilege	1688	WMIC.exe
Token: SeProfSingleProcessPrivilege	1688	WMIC.exe
Token: SeIncBasePriorityPrivilege	1688	WMIC.exe
Token: SeCreatePagefilePrivilege	1688	WMIC.exe
Token: SeBackupPrivilege	1688	WMIC.exe
Token: SeRestorePrivilege	1688	WMIC.exe
Token: SeShutdownPrivilege	1688	WMIC.exe
Token: SeDebugPrivilege	1688	WMIC.exe
Token: SeSystemEnvironmentPrivilege	1688	WMIC.exe
Token: SeRemoteShutdownPrivilege	1688	WMIC.exe
Token: SeUndockPrivilege	1688	WMIC.exe
Token: SeManageVolumePrivilege	1688	WMIC.exe
Token: 33	1688	WMIC.exe
Token: 34	1688	WMIC.exe
Token: 35	1688	WMIC.exe
Token: SeBackupPrivilege	1408	wbengine.exe
Token: SeRestorePrivilege	1408	wbengine.exe
Token: SeSecurityPrivilege	1408	wbengine.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 3036 wrote to memory of 2944	3036	FREENITRO V1.exe	28
PID 3036 wrote to memory of 2944	3036	FREENITRO V1.exe	28
PID 3036 wrote to memory of 2944	3036	FREENITRO V1.exe	28
PID 2944 wrote to memory of 2664	2944	freenitro.exe	30
PID 2944 wrote to memory of 2664	2944	freenitro.exe	30
PID 2944 wrote to memory of 2664	2944	freenitro.exe	30
PID 2664 wrote to memory of 1552	2664	cmd.exe	32
PID 2664 wrote to memory of 1552	2664	cmd.exe	32
PID 2664 wrote to memory of 1552	2664	cmd.exe	32
PID 2664 wrote to memory of 1688	2664	cmd.exe	35
PID 2664 wrote to memory of 1688	2664	cmd.exe	35
PID 2664 wrote to memory of 1688	2664	cmd.exe	35
PID 2944 wrote to memory of 588	2944	freenitro.exe	37
PID 2944 wrote to memory of 588	2944	freenitro.exe	37
PID 2944 wrote to memory of 588	2944	freenitro.exe	37
PID 588 wrote to memory of 1848	588	cmd.exe	39
PID 588 wrote to memory of 1848	588	cmd.exe	39
PID 588 wrote to memory of 1848	588	cmd.exe	39
PID 588 wrote to memory of 1264	588	cmd.exe	40
PID 588 wrote to memory of 1264	588	cmd.exe	40
PID 588 wrote to memory of 1264	588	cmd.exe	40
PID 2944 wrote to memory of 2756	2944	freenitro.exe	41
PID 2944 wrote to memory of 2756	2944	freenitro.exe	41
PID 2944 wrote to memory of 2756	2944	freenitro.exe	41
PID 2756 wrote to memory of 2336	2756	cmd.exe	43
PID 2756 wrote to memory of 2336	2756	cmd.exe	43
PID 2756 wrote to memory of 2336	2756	cmd.exe	43
PID 2944 wrote to memory of 2356	2944	freenitro.exe	47
PID 2944 wrote to memory of 2356	2944	freenitro.exe	47
PID 2944 wrote to memory of 2356	2944	freenitro.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\FREENITRO V1.exe
"C:\Users\Admin\AppData\Local\Temp\FREENITRO V1.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3036
- C:\Users\Admin\AppData\Roaming\freenitro.exe
  "C:\Users\Admin\AppData\Roaming\freenitro.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:2944
- - 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:2664
  - - C:\Windows\system32\vssadmin.exe
      vssadmin delete shadows /all /quiet
      4⤵
      Interacts with shadow copies
      PID:1552
  - - C:\Windows\System32\Wbem\WMIC.exe
      wmic shadowcopy delete
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:1688
- - 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:588
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} bootstatuspolicy ignoreallfailures
      4⤵
      Modifies boot configuration data using bcdedit
      PID:1848
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} recoveryenabled no
      4⤵
      Modifies boot configuration data using bcdedit
      PID:1264
- - C:\Windows\System32\cmd.exe
    "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2756
  - - C:\Windows\system32\wbadmin.exe
      wbadmin delete catalog -quiet
      4⤵
      Deletes backup catalog
      PID:2336
- - C:\Windows\system32\NOTEPAD.EXE
    "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\UNLOCK READ.txt
    3⤵
    PID:2356

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1560

C:\Windows\system32\wbengine.exe
"C:\Windows\system32\wbengine.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1408

C:\Windows\System32\vdsldr.exe
C:\Windows\System32\vdsldr.exe -Embedding
1⤵
PID:1060

C:\Windows\System32\vds.exe
C:\Windows\System32\vds.exe
1⤵
PID:2328

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

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\freenitro.exe

Filesize
114KB

MD5
cc3870b55eb1372465d209f2f8cef7db

SHA1
1de3efe840669876905143be9f2cb031441bb801

SHA256
a5051d78658678877bc45dc86a93da4b38f751af50b6e16028df2e9d28a38fd6

SHA512
bafaf8f60c440e7c75cad29832ff3d8a67310cac231fb74cbc3689155471bfa71302ddd6e10cc39dafe97d82d2e39c15509a107da0d882e9315cbb04d2f45f6d

Download Submit
C:\Users\Admin\Documents\UNLOCK READ.txt

Filesize
913B

MD5
3164d77037fdb424d1fe771628400f37

SHA1
1f6e7fa6c134bae7090c66231e68ce3053fce807

SHA256
a1bfedd2a278648fbb16af461b90606879e7b4708aadbb81db911dbf90a1ec8b

SHA512
31bfc351b994c0e841f9f53f61a1f62321f9c2c733b768b8ac31c1b8af0ba77d7c2d1cb649f2976206938425b1cc770c4eb178d9846c56f7e362cc5034aa287c

Download Submit
memory/2944-7-0x00000000009A0000-0x00000000009C2000-memory.dmp

Filesize
136KB

Download
memory/2944-13-0x000007FEF5690000-0x000007FEF607C000-memory.dmp

Filesize
9.9MB

Download
memory/2944-9-0x000007FEF5690000-0x000007FEF607C000-memory.dmp

Filesize
9.9MB

Download
memory/2944-490-0x000007FEF5690000-0x000007FEF607C000-memory.dmp

Filesize
9.9MB

Download
memory/3036-0-0x000007FEF5693000-0x000007FEF5694000-memory.dmp

Filesize
4KB

Download
memory/3036-1-0x0000000001290000-0x00000000012B2000-memory.dmp

Filesize
136KB

Download