chaos | dfd96d2413181b137eaa22f2feeda2291f93a99404f327772b52ac98dc5eef60

General

Target

Encrypter_protected.exe
Size

1.9MB
MD5

753dd955052999e94e9b4defc316c92d
SHA1

49e5fee7f9acc3eb5253744d789ea43dd67b11eb
SHA256

dfd96d2413181b137eaa22f2feeda2291f93a99404f327772b52ac98dc5eef60
SHA512

e28b03bd990e4d0a500f50a57bfa026c4081374b98d3cad969a941354cf47c0258b23de133c8e3b490a44662aabbca69246e0372c130b868dc421778a0d3b7c8
SSDEEP

49152:3DJk+6MbP/ZyRemj4rH3R/Y/4w6wL73WvXyXo:zJpPxysmjCB/YmwuvX6o

Score

10^/10

chaos ransomware

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/1724-9-0x0000000000400000-0x0000000000871000-memory.dmp	family_chaos
behavioral1/files/0x0029000000015c0f-14.dat	family_chaos
behavioral1/memory/2608-25-0x0000000000E90000-0x0000000000E9C000-memory.dmp	family_chaos
behavioral1/memory/1724-37-0x0000000000400000-0x0000000000871000-memory.dmp	family_chaos
behavioral1/memory/2544-46-0x0000000001000000-0x000000000100C000-memory.dmp	family_chaos
behavioral1/memory/2164-120-0x0000000000F40000-0x0000000000F4C000-memory.dmp	family_chaos
behavioral1/memory/2776-122-0x0000000000400000-0x0000000000871000-memory.dmp	family_chaos
behavioral1/memory/2776-123-0x0000000000400000-0x0000000000871000-memory.dmp	family_chaos

Suspicious use of NtSetInformationThreadHideFromDebugger 4 IoCs

pid	Process
1724	Encrypter_protected.exe
1724	Encrypter_protected.exe
1724	Encrypter_protected.exe
1724	Encrypter_protected.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
1120	NOTEPAD.EXE

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1724	Encrypter_protected.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1724	Encrypter_protected.exe

C:\Users\Admin\AppData\Local\Temp\Encrypter_protected.exe
"C:\Users\Admin\AppData\Local\Temp\Encrypter_protected.exe"
1⤵
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
PID:1724
- C:\Users\Admin\AppData\Local\Temp\._cache_Encrypter_protected.exe
  "C:\Users\Admin\AppData\Local\Temp\._cache_Encrypter_protected.exe"
  2⤵
  PID:2608
- - C:\Users\Admin\AppData\Roaming\svchost.exe
    "C:\Users\Admin\AppData\Roaming\svchost.exe"
    3⤵
    PID:2544
  - - 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:1120
- C:\ProgramData\Synaptics\Synaptics.exe
  "C:\ProgramData\Synaptics\Synaptics.exe" InjUpdate
  2⤵
  PID:2776
- - C:\Users\Admin\AppData\Local\Temp\._cache_Synaptics.exe
    "C:\Users\Admin\AppData\Local\Temp\._cache_Synaptics.exe" InjUpdate
    3⤵
    PID:2164
  - - C:\Users\Admin\AppData\Roaming\svchost.exe
      "C:\Users\Admin\AppData\Roaming\svchost.exe"
      4⤵
      PID:2680

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\ProgramData\Synaptics\Synaptics.exe

Filesize
1.9MB

MD5
753dd955052999e94e9b4defc316c92d

SHA1
49e5fee7f9acc3eb5253744d789ea43dd67b11eb

SHA256
dfd96d2413181b137eaa22f2feeda2291f93a99404f327772b52ac98dc5eef60

SHA512
e28b03bd990e4d0a500f50a57bfa026c4081374b98d3cad969a941354cf47c0258b23de133c8e3b490a44662aabbca69246e0372c130b868dc421778a0d3b7c8

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/1724-24-0x0000000004CE0000-0x0000000004CF0000-memory.dmp

Filesize
64KB

Download
memory/1724-2-0x000000000077C000-0x0000000000871000-memory.dmp

Filesize
980KB

Download
memory/1724-6-0x0000000000400000-0x0000000000871000-memory.dmp

Filesize
4.4MB

Download
memory/1724-9-0x0000000000400000-0x0000000000871000-memory.dmp

Filesize
4.4MB

Download
memory/1724-3-0x0000000000400000-0x0000000000871000-memory.dmp

Filesize
4.4MB

Download
memory/1724-4-0x0000000000400000-0x0000000000871000-memory.dmp

Filesize
4.4MB

Download
memory/1724-0-0x0000000000400000-0x0000000000871000-memory.dmp

Filesize
4.4MB

Download
memory/1724-1-0x0000000000400000-0x0000000000871000-memory.dmp

Filesize
4.4MB

Download
memory/1724-39-0x0000000006360000-0x00000000067D1000-memory.dmp

Filesize
4.4MB

Download
memory/1724-5-0x0000000000400000-0x0000000000871000-memory.dmp

Filesize
4.4MB

Download
memory/1724-37-0x0000000000400000-0x0000000000871000-memory.dmp

Filesize
4.4MB

Download
memory/1724-36-0x000000000077C000-0x0000000000871000-memory.dmp

Filesize
980KB

Download
memory/2164-120-0x0000000000F40000-0x0000000000F4C000-memory.dmp

Filesize
48KB

Download
memory/2544-46-0x0000000001000000-0x000000000100C000-memory.dmp

Filesize
48KB

Download
memory/2608-25-0x0000000000E90000-0x0000000000E9C000-memory.dmp

Filesize
48KB

Download
memory/2776-40-0x0000000000400000-0x0000000000871000-memory.dmp

Filesize
4.4MB

Download
memory/2776-115-0x0000000004B60000-0x0000000004B70000-memory.dmp

Filesize
64KB

Download
memory/2776-122-0x0000000000400000-0x0000000000871000-memory.dmp

Filesize
4.4MB

Download
memory/2776-123-0x0000000000400000-0x0000000000871000-memory.dmp

Filesize
4.4MB

Download

Analysis

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