chaos | 98df9c5905c1f8174e6f40869711bd658dc8f9724f81f1ede67a2cfd7595f85c

Analysis

max time kernel
147s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
12-06-2024 14:55

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General

Target

chaos-lab3-MALWARE.exe
Size

21KB
MD5

6de41e01f15b13212c5f63bcdbc220c0
SHA1

d4ac37f869e034a76b66dcdb0fdb8a3aa5f9edcb
SHA256

9578898ead6b426f3385939c924f75440a408c88a646f2a49d25958da77355ef
SHA512

42a256699e8baedb80dc6a7675b88aa85df634b1f3b6e5344a1680a1f99bdbe1cc591aa2d04d6c5f5a77612dc50cf0474f337b8f5be7f6fdb58de3944c3b618b
SSDEEP

384:RYenjLLADQDzCzk6KT6V29nOVp91tbeIbRxDG6:gc16Q9nc9bbeIbRxD9

Score

10^/10

chaos defense_evasion evasion execution impact ransomware spyware stealer

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Local\Packages\Microsoft.Windows.Search_cw5n1h2txyewy\LocalState\ConstraintIndex\Apps_{a2bf676e-b448-4116-a91c-7a7b68bf1fbc}\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: 0.1473766 BTC Bitcoin Address: bc1qlnzcep4l4ac0ttdrq7awxev9ehu465f2vpt9x0

Signatures

Chaos
Ransomware family first seen in June 2021.
ransomware chaos

Chaos Ransomware 2 IoCs

resource	yara_rule
behavioral2/memory/1152-0-0x00000000009E0000-0x00000000009EC000-memory.dmp	family_chaos
behavioral2/files/0x000900000002339d-6.dat	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
4856	bcdedit.exe
3596	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
4392	wbadmin.exe

Disables Task Manager via registry modification
evasion

Checks computer location settings 2 TTPs 2 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2804150937-2146708401-419095071-1000\Control Panel\International\Geo\Nation	chaos-lab3-MALWARE.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2804150937-2146708401-419095071-1000\Control Panel\International\Geo\Nation	svchost.exe

Drops startup file 1 IoCs

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

Executes dropped EXE 1 IoCs

pid	Process
924	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
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Checks SCSI registry key(s) 3 TTPs 4 IoCs

SCSI information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CDROM&VEN_QEMU&PROD_QEMU_DVD-ROM\4&215468A5&0&010000	vds.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_QEMU&Prod_QEMU_DVD-ROM\4&215468a5&0&010000\FriendlyName	vds.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\DISK&VEN_DADY&PROD_HARDDISK\4&215468A5&0&000000	vds.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000\FriendlyName	vds.exe

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
3460	vssadmin.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2804150937-2146708401-419095071-1000_Classes\Local Settings	svchost.exe

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
4464	NOTEPAD.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
924	svchost.exe

Suspicious behavior: EnumeratesProcesses 49 IoCs

pid	Process
1152	chaos-lab3-MALWARE.exe
1152	chaos-lab3-MALWARE.exe
1152	chaos-lab3-MALWARE.exe
1152	chaos-lab3-MALWARE.exe
1152	chaos-lab3-MALWARE.exe
1152	chaos-lab3-MALWARE.exe
1152	chaos-lab3-MALWARE.exe
1152	chaos-lab3-MALWARE.exe
1152	chaos-lab3-MALWARE.exe
1152	chaos-lab3-MALWARE.exe
1152	chaos-lab3-MALWARE.exe
1152	chaos-lab3-MALWARE.exe
1152	chaos-lab3-MALWARE.exe
1152	chaos-lab3-MALWARE.exe
1152	chaos-lab3-MALWARE.exe
1152	chaos-lab3-MALWARE.exe
1152	chaos-lab3-MALWARE.exe
1152	chaos-lab3-MALWARE.exe
1152	chaos-lab3-MALWARE.exe
1152	chaos-lab3-MALWARE.exe
1152	chaos-lab3-MALWARE.exe
1152	chaos-lab3-MALWARE.exe
1152	chaos-lab3-MALWARE.exe
1152	chaos-lab3-MALWARE.exe
1152	chaos-lab3-MALWARE.exe
924	svchost.exe
924	svchost.exe
924	svchost.exe
924	svchost.exe
924	svchost.exe
924	svchost.exe
924	svchost.exe
924	svchost.exe
924	svchost.exe
924	svchost.exe
924	svchost.exe
924	svchost.exe
924	svchost.exe
924	svchost.exe
924	svchost.exe
924	svchost.exe
924	svchost.exe
924	svchost.exe
924	svchost.exe
924	svchost.exe
924	svchost.exe
924	svchost.exe
924	svchost.exe
924	svchost.exe

Suspicious use of AdjustPrivilegeToken 50 IoCs

description	pid	Process
Token: SeDebugPrivilege	1152	chaos-lab3-MALWARE.exe
Token: SeDebugPrivilege	924	svchost.exe
Token: SeBackupPrivilege	1876	vssvc.exe
Token: SeRestorePrivilege	1876	vssvc.exe
Token: SeAuditPrivilege	1876	vssvc.exe
Token: SeIncreaseQuotaPrivilege	1668	WMIC.exe
Token: SeSecurityPrivilege	1668	WMIC.exe
Token: SeTakeOwnershipPrivilege	1668	WMIC.exe
Token: SeLoadDriverPrivilege	1668	WMIC.exe
Token: SeSystemProfilePrivilege	1668	WMIC.exe
Token: SeSystemtimePrivilege	1668	WMIC.exe
Token: SeProfSingleProcessPrivilege	1668	WMIC.exe
Token: SeIncBasePriorityPrivilege	1668	WMIC.exe
Token: SeCreatePagefilePrivilege	1668	WMIC.exe
Token: SeBackupPrivilege	1668	WMIC.exe
Token: SeRestorePrivilege	1668	WMIC.exe
Token: SeShutdownPrivilege	1668	WMIC.exe
Token: SeDebugPrivilege	1668	WMIC.exe
Token: SeSystemEnvironmentPrivilege	1668	WMIC.exe
Token: SeRemoteShutdownPrivilege	1668	WMIC.exe
Token: SeUndockPrivilege	1668	WMIC.exe
Token: SeManageVolumePrivilege	1668	WMIC.exe
Token: 33	1668	WMIC.exe
Token: 34	1668	WMIC.exe
Token: 35	1668	WMIC.exe
Token: 36	1668	WMIC.exe
Token: SeIncreaseQuotaPrivilege	1668	WMIC.exe
Token: SeSecurityPrivilege	1668	WMIC.exe
Token: SeTakeOwnershipPrivilege	1668	WMIC.exe
Token: SeLoadDriverPrivilege	1668	WMIC.exe
Token: SeSystemProfilePrivilege	1668	WMIC.exe
Token: SeSystemtimePrivilege	1668	WMIC.exe
Token: SeProfSingleProcessPrivilege	1668	WMIC.exe
Token: SeIncBasePriorityPrivilege	1668	WMIC.exe
Token: SeCreatePagefilePrivilege	1668	WMIC.exe
Token: SeBackupPrivilege	1668	WMIC.exe
Token: SeRestorePrivilege	1668	WMIC.exe
Token: SeShutdownPrivilege	1668	WMIC.exe
Token: SeDebugPrivilege	1668	WMIC.exe
Token: SeSystemEnvironmentPrivilege	1668	WMIC.exe
Token: SeRemoteShutdownPrivilege	1668	WMIC.exe
Token: SeUndockPrivilege	1668	WMIC.exe
Token: SeManageVolumePrivilege	1668	WMIC.exe
Token: 33	1668	WMIC.exe
Token: 34	1668	WMIC.exe
Token: 35	1668	WMIC.exe
Token: 36	1668	WMIC.exe
Token: SeBackupPrivilege	3004	wbengine.exe
Token: SeRestorePrivilege	3004	wbengine.exe
Token: SeSecurityPrivilege	3004	wbengine.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 1152 wrote to memory of 924	1152	chaos-lab3-MALWARE.exe	85
PID 1152 wrote to memory of 924	1152	chaos-lab3-MALWARE.exe	85
PID 924 wrote to memory of 2408	924	svchost.exe	86
PID 924 wrote to memory of 2408	924	svchost.exe	86
PID 2408 wrote to memory of 3460	2408	cmd.exe	88
PID 2408 wrote to memory of 3460	2408	cmd.exe	88
PID 2408 wrote to memory of 1668	2408	cmd.exe	91
PID 2408 wrote to memory of 1668	2408	cmd.exe	91
PID 924 wrote to memory of 2356	924	svchost.exe	93
PID 924 wrote to memory of 2356	924	svchost.exe	93
PID 2356 wrote to memory of 4856	2356	cmd.exe	95
PID 2356 wrote to memory of 4856	2356	cmd.exe	95
PID 2356 wrote to memory of 3596	2356	cmd.exe	96
PID 2356 wrote to memory of 3596	2356	cmd.exe	96
PID 924 wrote to memory of 3584	924	svchost.exe	97
PID 924 wrote to memory of 3584	924	svchost.exe	97
PID 3584 wrote to memory of 4392	3584	cmd.exe	99
PID 3584 wrote to memory of 4392	3584	cmd.exe	99
PID 924 wrote to memory of 4464	924	svchost.exe	104
PID 924 wrote to memory of 4464	924	svchost.exe	104

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\chaos-lab3-MALWARE.exe
"C:\Users\Admin\AppData\Local\Temp\chaos-lab3-MALWARE.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1152
- C:\Users\Admin\AppData\Roaming\svchost.exe
  "C:\Users\Admin\AppData\Roaming\svchost.exe"
  2⤵
  - Checks computer location settings
  - Drops startup file
  - Executes dropped EXE
  - Modifies registry class
  - Suspicious behavior: AddClipboardFormatListener
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:924
- - 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:2408
  - - C:\Windows\system32\vssadmin.exe
      vssadmin delete shadows /all /quiet
      4⤵
      Interacts with shadow copies
      PID:3460
  - - C:\Windows\System32\Wbem\WMIC.exe
      wmic shadowcopy delete
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:1668
- - 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:2356
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} bootstatuspolicy ignoreallfailures
      4⤵
      Modifies boot configuration data using bcdedit
      PID:4856
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} recoveryenabled no
      4⤵
      Modifies boot configuration data using bcdedit
      PID:3596
- - C:\Windows\System32\cmd.exe
    "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:3584
  - - C:\Windows\system32\wbadmin.exe
      wbadmin delete catalog -quiet
      4⤵
      Deletes backup catalog
      PID:4392
- - 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:4464

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1876

C:\Windows\system32\wbengine.exe
"C:\Windows\system32\wbengine.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:3004

C:\Windows\System32\vdsldr.exe
C:\Windows\System32\vdsldr.exe -Embedding
1⤵
PID:1936

C:\Windows\System32\vds.exe
C:\Windows\System32\vds.exe
1⤵
- Checks SCSI registry key(s)
PID:2168

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

Peripheral Device Discovery

T1120

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\Local\Packages\Microsoft.Windows.Search_cw5n1h2txyewy\LocalState\ConstraintIndex\Apps_{a2bf676e-b448-4116-a91c-7a7b68bf1fbc}\read_it.txt

Filesize
964B

MD5
4217b8b83ce3c3f70029a056546f8fd0

SHA1
487cdb5733d073a0427418888e8f7070fe782a03

SHA256
7d767e907be373c680d1f7884d779588eb643bebb3f27bf3b5ed4864aa4d8121

SHA512
2a58c99fa52f99c276e27eb98aef2ce1205f16d1e37b7e87eb69e9ecda22b578195a43f1a7f70fead6ba70421abf2f85c917551c191536eaf1f3011d3d24f740

Download Submit
C:\Users\Admin\AppData\Roaming\svchost.exe

Filesize
21KB

MD5
6de41e01f15b13212c5f63bcdbc220c0

SHA1
d4ac37f869e034a76b66dcdb0fdb8a3aa5f9edcb

SHA256
9578898ead6b426f3385939c924f75440a408c88a646f2a49d25958da77355ef

SHA512
42a256699e8baedb80dc6a7675b88aa85df634b1f3b6e5344a1680a1f99bdbe1cc591aa2d04d6c5f5a77612dc50cf0474f337b8f5be7f6fdb58de3944c3b618b

Download Submit
memory/924-14-0x00007FF933800000-0x00007FF9342C1000-memory.dmp

Filesize
10.8MB

Download
memory/924-46-0x00007FF933800000-0x00007FF9342C1000-memory.dmp

Filesize
10.8MB

Download
memory/1152-0-0x00000000009E0000-0x00000000009EC000-memory.dmp

Filesize
48KB

Download
memory/1152-1-0x00007FF933803000-0x00007FF933805000-memory.dmp

Filesize
8KB

Download