chaos | 544deae2250cf2af18927bd25558a889203cb601efa171f15d550cf28f613978

Analysis

max time kernel
26s
max time network
28s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
02-07-2024 08:23

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General

Target

Encrypter_protected.exe
Size

1.8MB
MD5

46826cf0a3b38a11ec5b0499561e8c83
SHA1

1d027ff751ca85c54562071fcf06f89903807781
SHA256

544deae2250cf2af18927bd25558a889203cb601efa171f15d550cf28f613978
SHA512

451ce4e46c0d21cf93bc2f1d58994b81f4c78c0f9cb4b1f28546d5a52f1a4a50f406cc41f29b904a08e62593d4709b5724eed185a97d6c28e6d07f189aa87953
SSDEEP

24576:9JTJfZITY6zD6yoss/khmiSWsHXfbGQ+YGhGaBedl0uSRhWbZwJ48W1kf6jLEXy3:9jxIU6XxosWjbWsvbqeBSI2CXEXEL

Score

10^/10

chaos ransomware spyware stealer

Malware Config

Extracted

Path

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

Ransom Note

----> You got ransom by FemboyCat <---- 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 5 IoCs

resource	yara_rule
behavioral2/memory/4584-14-0x0000000000400000-0x000000000082E000-memory.dmp	family_chaos
behavioral2/files/0x000600000002326f-17.dat	family_chaos
behavioral2/memory/5004-71-0x00000000006E0000-0x00000000006EC000-memory.dmp	family_chaos
behavioral2/memory/4584-132-0x0000000000400000-0x000000000082E000-memory.dmp	family_chaos
behavioral2/memory/2892-268-0x0000000000400000-0x000000000082E000-memory.dmp	family_chaos

Checks computer location settings 2 TTPs 5 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-1-5-21-2539840389-1261165778-1087677076-1000\Control Panel\International\Geo\Nation	._cache_Encrypter_protected.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2539840389-1261165778-1087677076-1000\Control Panel\International\Geo\Nation	Synaptics.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2539840389-1261165778-1087677076-1000\Control Panel\International\Geo\Nation	svchost.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2539840389-1261165778-1087677076-1000\Control Panel\International\Geo\Nation	._cache_Synaptics.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2539840389-1261165778-1087677076-1000\Control Panel\International\Geo\Nation	Encrypter_protected.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 5 IoCs

pid	Process
5004	._cache_Encrypter_protected.exe
2892	Synaptics.exe
2660	svchost.exe
860	._cache_Synaptics.exe
2200	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\Start Menu\Programs\Administrative Tools\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Videos\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Pictures\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\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\System Tools\Desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Desktop\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\OneDrive\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\Maintenance\Desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Pictures\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Favorites\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\Public\Music\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Pictures\Saved Pictures\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\AccountPictures\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessibility\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\Contacts\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Downloads\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Saved Games\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\Start Menu\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Desktop\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Pictures\Camera Roll\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\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\SendTo\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Documents\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	F:\$RECYCLE.BIN\S-1-5-21-2539840389-1261165778-1087677076-1000\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Links\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Documents\desktop.ini	svchost.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 3 IoCs

pid	Process
4584	Encrypter_protected.exe
2892	Synaptics.exe
2892	Synaptics.exe

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

System Information Discovery
T1082

Checks processor information in registry 2 TTPs 3 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	EXCEL.EXE

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	EXCEL.EXE

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2539840389-1261165778-1087677076-1000_Classes\Local Settings	svchost.exe

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
2176	NOTEPAD.EXE

Suspicious behavior: AddClipboardFormatListener 2 IoCs

pid	Process
4536	EXCEL.EXE
2660	svchost.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
4584	Encrypter_protected.exe
4584	Encrypter_protected.exe
5004	._cache_Encrypter_protected.exe
5004	._cache_Encrypter_protected.exe
5004	._cache_Encrypter_protected.exe
5004	._cache_Encrypter_protected.exe
5004	._cache_Encrypter_protected.exe
5004	._cache_Encrypter_protected.exe
5004	._cache_Encrypter_protected.exe
5004	._cache_Encrypter_protected.exe
5004	._cache_Encrypter_protected.exe
5004	._cache_Encrypter_protected.exe
5004	._cache_Encrypter_protected.exe
5004	._cache_Encrypter_protected.exe
5004	._cache_Encrypter_protected.exe
5004	._cache_Encrypter_protected.exe
5004	._cache_Encrypter_protected.exe
5004	._cache_Encrypter_protected.exe
5004	._cache_Encrypter_protected.exe
5004	._cache_Encrypter_protected.exe
5004	._cache_Encrypter_protected.exe
5004	._cache_Encrypter_protected.exe
5004	._cache_Encrypter_protected.exe
5004	._cache_Encrypter_protected.exe
5004	._cache_Encrypter_protected.exe
5004	._cache_Encrypter_protected.exe
5004	._cache_Encrypter_protected.exe
5004	._cache_Encrypter_protected.exe
2660	svchost.exe
2660	svchost.exe
2660	svchost.exe
2660	svchost.exe
2660	svchost.exe
2660	svchost.exe
2660	svchost.exe
2660	svchost.exe
2660	svchost.exe
2892	Synaptics.exe
2892	Synaptics.exe
860	._cache_Synaptics.exe
860	._cache_Synaptics.exe
860	._cache_Synaptics.exe
860	._cache_Synaptics.exe
860	._cache_Synaptics.exe
860	._cache_Synaptics.exe
860	._cache_Synaptics.exe
860	._cache_Synaptics.exe
860	._cache_Synaptics.exe
2660	svchost.exe
2660	svchost.exe
2660	svchost.exe
2660	svchost.exe
2660	svchost.exe
2660	svchost.exe
2660	svchost.exe
2660	svchost.exe
2660	svchost.exe
2660	svchost.exe
2660	svchost.exe
2660	svchost.exe
2660	svchost.exe
2660	svchost.exe
2660	svchost.exe
860	._cache_Synaptics.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	5004	._cache_Encrypter_protected.exe
Token: SeDebugPrivilege	2660	svchost.exe
Token: SeDebugPrivilege	860	._cache_Synaptics.exe
Token: SeDebugPrivilege	2200	svchost.exe

Suspicious use of SetWindowsHookEx 6 IoCs

pid	Process
4584	Encrypter_protected.exe
2892	Synaptics.exe
4536	EXCEL.EXE
4536	EXCEL.EXE
4536	EXCEL.EXE
4536	EXCEL.EXE

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 4584 wrote to memory of 5004	4584	Encrypter_protected.exe	81
PID 4584 wrote to memory of 5004	4584	Encrypter_protected.exe	81
PID 4584 wrote to memory of 2892	4584	Encrypter_protected.exe	82
PID 4584 wrote to memory of 2892	4584	Encrypter_protected.exe	82
PID 4584 wrote to memory of 2892	4584	Encrypter_protected.exe	82
PID 5004 wrote to memory of 2660	5004	._cache_Encrypter_protected.exe	83
PID 5004 wrote to memory of 2660	5004	._cache_Encrypter_protected.exe	83
PID 2892 wrote to memory of 860	2892	Synaptics.exe	84
PID 2892 wrote to memory of 860	2892	Synaptics.exe	84
PID 2660 wrote to memory of 2176	2660	svchost.exe	87
PID 2660 wrote to memory of 2176	2660	svchost.exe	87
PID 860 wrote to memory of 2200	860	._cache_Synaptics.exe	88
PID 860 wrote to memory of 2200	860	._cache_Synaptics.exe	88

C:\Users\Admin\AppData\Local\Temp\Encrypter_protected.exe
"C:\Users\Admin\AppData\Local\Temp\Encrypter_protected.exe"
1⤵
- Checks computer location settings
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4584
- C:\Users\Admin\AppData\Local\Temp\._cache_Encrypter_protected.exe
  "C:\Users\Admin\AppData\Local\Temp\._cache_Encrypter_protected.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:5004
- - C:\Users\Admin\AppData\Roaming\svchost.exe
    "C:\Users\Admin\AppData\Roaming\svchost.exe"
    3⤵
    - Checks computer location settings
    - Drops startup file
    - Executes dropped EXE
    - Drops desktop.ini file(s)
    - Modifies registry class
    - Suspicious behavior: AddClipboardFormatListener
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:2660
  - - C:\Windows\system32\NOTEPAD.EXE
      "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\read_it.txt
      4⤵
      Opens file in notepad (likely ransom note)
      PID:2176
- C:\ProgramData\Synaptics\Synaptics.exe
  "C:\ProgramData\Synaptics\Synaptics.exe" InjUpdate
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2892
- - C:\Users\Admin\AppData\Local\Temp\._cache_Synaptics.exe
    "C:\Users\Admin\AppData\Local\Temp\._cache_Synaptics.exe" InjUpdate
    3⤵
    - Checks computer location settings
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:860
  - - C:\Users\Admin\AppData\Roaming\svchost.exe
      "C:\Users\Admin\AppData\Roaming\svchost.exe"
      4⤵
      Executes dropped EXE
      Suspicious use of AdjustPrivilegeToken
      PID:2200

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" /automation -Embedding
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
PID:4536

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

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

Replay Monitor

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Downloads

C:\ProgramData\Synaptics\Synaptics.exe

Filesize
1.8MB

MD5
46826cf0a3b38a11ec5b0499561e8c83

SHA1
1d027ff751ca85c54562071fcf06f89903807781

SHA256
544deae2250cf2af18927bd25558a889203cb601efa171f15d550cf28f613978

SHA512
451ce4e46c0d21cf93bc2f1d58994b81f4c78c0f9cb4b1f28546d5a52f1a4a50f406cc41f29b904a08e62593d4709b5724eed185a97d6c28e6d07f189aa87953

Download Submit
C:\Users\Admin\AppData\Local\Temp\._cache_Encrypter_protected.exe

Filesize
22KB

MD5
6ac60b3f3fc089844b316b8edcb6cbdb

SHA1
b4fc7bfd470f3dc67a3b3a9ddcf2dbd26dcaf2b3

SHA256
657c0d869ee0e44742e138b18533577b7c9bca8d40ffe5b658d80459e4f8f4d9

SHA512
af218350125ea6ab9da68bb2edc7dfbdb023f0fc7ff2c446059d739fccc3891ad1974882275cedd2bf42fbbf2fd9ea50fa2d149a4c5cfbd9a23fa37e29071ecf

Download Submit
C:\Users\Admin\AppData\Local\Temp\xe2nuCyI.xlsm

Filesize
17KB

MD5
e566fc53051035e1e6fd0ed1823de0f9

SHA1
00bc96c48b98676ecd67e81a6f1d7754e4156044

SHA256
8e574b4ae6502230c0829e2319a6c146aebd51b7008bf5bbfb731424d7952c15

SHA512
a12f56ff30ea35381c2b8f8af2446cf1daa21ee872e98cad4b863db060acd4c33c5760918c277dadb7a490cb4ca2f925d59c70dc5171e16601a11bc4a6542b04

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

Filesize
920B

MD5
96e58c047ee337ee491fbc24f95405a0

SHA1
00caeea02ff70f1e523a9d618ee22cac3b9cc30b

SHA256
e631d7ac377fb25957aef0cf348a9531682e88fb2c438b9e7ae828182d370419

SHA512
4d902a9c9a7b1b19d5e0d064da928d38c22d221405da9beb370fdef9cba252f8410a96a6d7c4e622cdccb4da1b06a92db8f09d300e7e7dc198068d9e72acb381

Download Submit
memory/2892-134-0x0000000000400000-0x000000000082E000-memory.dmp

Filesize
4.2MB

Download
memory/2892-268-0x0000000000400000-0x000000000082E000-memory.dmp

Filesize
4.2MB

Download
memory/2892-133-0x0000000000400000-0x000000000082E000-memory.dmp

Filesize
4.2MB

Download
memory/4536-204-0x00007FF9D6C50000-0x00007FF9D6C60000-memory.dmp

Filesize
64KB

Download
memory/4536-203-0x00007FF9D6C50000-0x00007FF9D6C60000-memory.dmp

Filesize
64KB

Download
memory/4536-202-0x00007FF9D6C50000-0x00007FF9D6C60000-memory.dmp

Filesize
64KB

Download
memory/4536-201-0x00007FF9D6C50000-0x00007FF9D6C60000-memory.dmp

Filesize
64KB

Download
memory/4536-205-0x00007FF9D6C50000-0x00007FF9D6C60000-memory.dmp

Filesize
64KB

Download
memory/4536-206-0x00007FF9D4A70000-0x00007FF9D4A80000-memory.dmp

Filesize
64KB

Download
memory/4536-207-0x00007FF9D4A70000-0x00007FF9D4A80000-memory.dmp

Filesize
64KB

Download
memory/4584-8-0x0000000000400000-0x000000000082E000-memory.dmp

Filesize
4.2MB

Download
memory/4584-9-0x0000000000400000-0x000000000082E000-memory.dmp

Filesize
4.2MB

Download
memory/4584-132-0x0000000000400000-0x000000000082E000-memory.dmp

Filesize
4.2MB

Download
memory/4584-1-0x0000000000400000-0x000000000082E000-memory.dmp

Filesize
4.2MB

Download
memory/4584-14-0x0000000000400000-0x000000000082E000-memory.dmp

Filesize
4.2MB

Download
memory/4584-11-0x0000000000400000-0x000000000082E000-memory.dmp

Filesize
4.2MB

Download
memory/4584-10-0x0000000000400000-0x000000000082E000-memory.dmp

Filesize
4.2MB

Download
memory/4584-5-0x0000000000400000-0x000000000082E000-memory.dmp

Filesize
4.2MB

Download
memory/4584-2-0x000000000074E000-0x000000000082E000-memory.dmp

Filesize
896KB

Download
memory/4584-7-0x0000000000400000-0x000000000082E000-memory.dmp

Filesize
4.2MB

Download
memory/4584-3-0x0000000000400000-0x000000000082E000-memory.dmp

Filesize
4.2MB

Download
memory/4584-4-0x0000000000400000-0x000000000082E000-memory.dmp

Filesize
4.2MB

Download
memory/4584-6-0x0000000000400000-0x000000000082E000-memory.dmp

Filesize
4.2MB

Download
memory/5004-110-0x00007FF9F8C03000-0x00007FF9F8C05000-memory.dmp

Filesize
8KB

Download
memory/5004-71-0x00000000006E0000-0x00000000006EC000-memory.dmp

Filesize
48KB

Download