chaos | 544deae2250cf2af18927bd25558a889203cb601efa171f15d550cf28f613978

Analysis

max time kernel
30s
max time network
30s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-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\Desktop\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 8 IoCs

resource	yara_rule
behavioral1/memory/1612-9-0x0000000000400000-0x000000000082E000-memory.dmp	family_chaos
behavioral1/files/0x000a000000012280-13.dat	family_chaos
behavioral1/memory/2652-25-0x0000000000E00000-0x0000000000E0C000-memory.dmp	family_chaos
behavioral1/memory/1612-39-0x0000000000400000-0x000000000082E000-memory.dmp	family_chaos
behavioral1/memory/2436-46-0x0000000001100000-0x000000000110C000-memory.dmp	family_chaos
behavioral1/memory/2784-120-0x0000000000320000-0x000000000032C000-memory.dmp	family_chaos
behavioral1/memory/2988-122-0x0000000000400000-0x000000000082E000-memory.dmp	family_chaos
behavioral1/memory/2988-123-0x0000000000400000-0x000000000082E000-memory.dmp	family_chaos

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
2652	._cache_Encrypter_protected.exe
2988	Synaptics.exe
2436	svchost.exe
2784	._cache_Synaptics.exe
2768	svchost.exe

Loads dropped DLL 5 IoCs

pid	Process
1612	Encrypter_protected.exe
1612	Encrypter_protected.exe
1612	Encrypter_protected.exe
2988	Synaptics.exe
2988	Synaptics.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	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\Admin\AppData\Roaming\Microsoft\Windows\Recent\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Links\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Pictures\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Videos\Sample Videos\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Desktop\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Desktop\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\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Administrative Tools\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Pictures\Sample Pictures\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Music\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Music\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\Contacts\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\AppData\Roaming\Microsoft\Windows\Start Menu\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\Public\Documents\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Videos\desktop.ini	svchost.exe
File opened for modification	F:\$RECYCLE.BIN\S-1-5-21-2737914667-933161113-3798636211-1000\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Pictures\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\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\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Maintenance\Desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Documents\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\SendTo\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\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\Favorites\Links\desktop.ini	svchost.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 4 IoCs

pid	Process
1612	Encrypter_protected.exe
2988	Synaptics.exe
2988	Synaptics.exe
2988	Synaptics.exe

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

System Information Discovery
T1082

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
1768	NOTEPAD.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2436	svchost.exe

Suspicious behavior: EnumeratesProcesses 13 IoCs

pid	Process
1612	Encrypter_protected.exe
2652	._cache_Encrypter_protected.exe
2652	._cache_Encrypter_protected.exe
2652	._cache_Encrypter_protected.exe
2436	svchost.exe
2436	svchost.exe
2436	svchost.exe
2436	svchost.exe
2988	Synaptics.exe
2784	._cache_Synaptics.exe
2784	._cache_Synaptics.exe
2784	._cache_Synaptics.exe
2768	svchost.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	2652	._cache_Encrypter_protected.exe
Token: SeDebugPrivilege	2436	svchost.exe
Token: SeDebugPrivilege	2784	._cache_Synaptics.exe
Token: SeDebugPrivilege	2768	svchost.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
1768	NOTEPAD.EXE

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1612	Encrypter_protected.exe
2988	Synaptics.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 1612 wrote to memory of 2652	1612	Encrypter_protected.exe	28
PID 1612 wrote to memory of 2652	1612	Encrypter_protected.exe	28
PID 1612 wrote to memory of 2652	1612	Encrypter_protected.exe	28
PID 1612 wrote to memory of 2652	1612	Encrypter_protected.exe	28
PID 1612 wrote to memory of 2988	1612	Encrypter_protected.exe	29
PID 1612 wrote to memory of 2988	1612	Encrypter_protected.exe	29
PID 1612 wrote to memory of 2988	1612	Encrypter_protected.exe	29
PID 1612 wrote to memory of 2988	1612	Encrypter_protected.exe	29
PID 2652 wrote to memory of 2436	2652	._cache_Encrypter_protected.exe	30
PID 2652 wrote to memory of 2436	2652	._cache_Encrypter_protected.exe	30
PID 2652 wrote to memory of 2436	2652	._cache_Encrypter_protected.exe	30
PID 2436 wrote to memory of 1768	2436	svchost.exe	31
PID 2436 wrote to memory of 1768	2436	svchost.exe	31
PID 2436 wrote to memory of 1768	2436	svchost.exe	31
PID 2988 wrote to memory of 2784	2988	Synaptics.exe	33
PID 2988 wrote to memory of 2784	2988	Synaptics.exe	33
PID 2988 wrote to memory of 2784	2988	Synaptics.exe	33
PID 2988 wrote to memory of 2784	2988	Synaptics.exe	33
PID 2784 wrote to memory of 2768	2784	._cache_Synaptics.exe	34
PID 2784 wrote to memory of 2768	2784	._cache_Synaptics.exe	34
PID 2784 wrote to memory of 2768	2784	._cache_Synaptics.exe	34

C:\Users\Admin\AppData\Local\Temp\Encrypter_protected.exe
"C:\Users\Admin\AppData\Local\Temp\Encrypter_protected.exe"
1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1612
- C:\Users\Admin\AppData\Local\Temp\._cache_Encrypter_protected.exe
  "C:\Users\Admin\AppData\Local\Temp\._cache_Encrypter_protected.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2652
- - C:\Users\Admin\AppData\Roaming\svchost.exe
    "C:\Users\Admin\AppData\Roaming\svchost.exe"
    3⤵
    - 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:2436
  - - 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)
      Suspicious use of FindShellTrayWindow
      PID:1768
- C:\ProgramData\Synaptics\Synaptics.exe
  "C:\ProgramData\Synaptics\Synaptics.exe" InjUpdate
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2988
- - C:\Users\Admin\AppData\Local\Temp\._cache_Synaptics.exe
    "C:\Users\Admin\AppData\Local\Temp\._cache_Synaptics.exe" InjUpdate
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:2784
  - - C:\Users\Admin\AppData\Roaming\svchost.exe
      "C:\Users\Admin\AppData\Roaming\svchost.exe"
      4⤵
      Executes dropped EXE
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:2768

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

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

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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\Desktop\read_it.txt

Filesize
920B

MD5
96e58c047ee337ee491fbc24f95405a0

SHA1
00caeea02ff70f1e523a9d618ee22cac3b9cc30b

SHA256
e631d7ac377fb25957aef0cf348a9531682e88fb2c438b9e7ae828182d370419

SHA512
4d902a9c9a7b1b19d5e0d064da928d38c22d221405da9beb370fdef9cba252f8410a96a6d7c4e622cdccb4da1b06a92db8f09d300e7e7dc198068d9e72acb381

Download Submit
memory/1612-5-0x0000000000400000-0x000000000082E000-memory.dmp

Filesize
4.2MB

Download
memory/1612-38-0x00000000066F0000-0x0000000006B1E000-memory.dmp

Filesize
4.2MB

Download
memory/1612-0-0x0000000000400000-0x000000000082E000-memory.dmp

Filesize
4.2MB

Download
memory/1612-6-0x0000000000400000-0x000000000082E000-memory.dmp

Filesize
4.2MB

Download
memory/1612-9-0x0000000000400000-0x000000000082E000-memory.dmp

Filesize
4.2MB

Download
memory/1612-4-0x0000000000400000-0x000000000082E000-memory.dmp

Filesize
4.2MB

Download
memory/1612-24-0x0000000004F50000-0x0000000004F60000-memory.dmp

Filesize
64KB

Download
memory/1612-2-0x000000000074E000-0x000000000082E000-memory.dmp

Filesize
896KB

Download
memory/1612-1-0x0000000000400000-0x000000000082E000-memory.dmp

Filesize
4.2MB

Download
memory/1612-35-0x00000000066F0000-0x0000000006B1E000-memory.dmp

Filesize
4.2MB

Download
memory/1612-39-0x0000000000400000-0x000000000082E000-memory.dmp

Filesize
4.2MB

Download
memory/1612-47-0x0000000004F50000-0x0000000004F60000-memory.dmp

Filesize
64KB

Download
memory/1612-3-0x0000000000400000-0x000000000082E000-memory.dmp

Filesize
4.2MB

Download
memory/2436-46-0x0000000001100000-0x000000000110C000-memory.dmp

Filesize
48KB

Download
memory/2652-25-0x0000000000E00000-0x0000000000E0C000-memory.dmp

Filesize
48KB

Download
memory/2784-120-0x0000000000320000-0x000000000032C000-memory.dmp

Filesize
48KB

Download
memory/2988-40-0x0000000000400000-0x000000000082E000-memory.dmp

Filesize
4.2MB

Download
memory/2988-115-0x0000000004F90000-0x0000000004FA0000-memory.dmp

Filesize
64KB

Download
memory/2988-122-0x0000000000400000-0x000000000082E000-memory.dmp

Filesize
4.2MB

Download
memory/2988-123-0x0000000000400000-0x000000000082E000-memory.dmp

Filesize
4.2MB

Download