fatalrat | c29eb3ea929319a884bb8061faf36e855d93f44ba1362441d5fa34f70613181a

Analysis

max time kernel
154s
max time network
161s
platform
windows10-2004_x64
resource
win10v2004-20230915-en
resource tags

arch:x64arch:x86image:win10v2004-20230915-enlocale:en-usos:windows10-2004-x64system
submitted
20/10/2023, 05:08

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General

Target

c29eb3ea929319a884bb8061faf36e855d93f44ba1362441d5fa34f70613181a.exe
Size

5.6MB
MD5

0481d5db958410e104c3ec077eeb6b5a
SHA1

2b52d36fa7feed40fd6e27749aa164b48a615f75
SHA256

c29eb3ea929319a884bb8061faf36e855d93f44ba1362441d5fa34f70613181a
SHA512

af6bcd124350e3f669b71c349f31c44fef8b1047ff101638057ea349ea5fe9db518f1a3dcbac1d72a8ce918de0b40c753adc15fbc79558bc41126766ee39b4ed
SSDEEP

98304:ZJ5+K5wCm/oXwzldh+bQeDV/x5szNfedamMhYVnYG:ZD+K6RawpWbQgxSzNfedamrY

Score

10^/10

fatalrat evasion infostealer persistence rat vmprotect

Malware Config

Signatures

FatalRat
FatalRat is a modular infostealer family written in C++ first appearing in June 2021.
infostealer rat fatalrat

Fatal Rat payload 1 IoCs

rat infostealer

resource	yara_rule
behavioral2/memory/2932-80-0x0000000010000000-0x000000001002A000-memory.dmp	fatalrat

Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	PTvrst.exe

Downloads MZ/PE file

Executes dropped EXE 3 IoCs

pid	Process
2784	PTvrst.exe
1088	spolsvt.exe
2932	spolsvt.exe

Identifies Wine through registry keys 2 TTPs 1 IoCs

Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1045988481-1457812719-2617974652-1000\Software\Wine	PTvrst.exe

VMProtect packed file 4 IoCs

Detects executables packed with VMProtect commercial packer.

vmprotect

resource	yara_rule
behavioral2/memory/2192-0-0x0000000000400000-0x0000000000DEC000-memory.dmp	vmprotect
behavioral2/memory/2192-9-0x0000000000400000-0x0000000000DEC000-memory.dmp	vmprotect
behavioral2/memory/2192-24-0x0000000000400000-0x0000000000DEC000-memory.dmp	vmprotect
behavioral2/memory/2192-105-0x0000000000400000-0x0000000000DEC000-memory.dmp	vmprotect

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Therecontinuous = "C:\\WINDOWS\\DNomb\\PTvrst.exe"	PTvrst.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\ÏµÍ³×é¼þ = "C:\\Users\\Public\\Documents\\123\\PTvrst.exe"	spolsvt.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
2784	PTvrst.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2784 set thread context of 1088	2784	PTvrst.exe	95
PID 1088 set thread context of 2932	1088	spolsvt.exe	96

Drops file in Windows directory 4 IoCs

description	ioc	Process
File created	C:\Windows\DNomb\spolsvt.exe	c29eb3ea929319a884bb8061faf36e855d93f44ba1362441d5fa34f70613181a.exe
File created	C:\Windows\DNomb\Mpec.mbt	c29eb3ea929319a884bb8061faf36e855d93f44ba1362441d5fa34f70613181a.exe
File opened for modification	C:\Windows\DNomb\Mpec.mbt	c29eb3ea929319a884bb8061faf36e855d93f44ba1362441d5fa34f70613181a.exe
File created	C:\Windows\DNomb\PTvrst.exe	c29eb3ea929319a884bb8061faf36e855d93f44ba1362441d5fa34f70613181a.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 2 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	spolsvt.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	spolsvt.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1045988481-1457812719-2617974652-1000_Classes\Local Settings	c29eb3ea929319a884bb8061faf36e855d93f44ba1362441d5fa34f70613181a.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2192	c29eb3ea929319a884bb8061faf36e855d93f44ba1362441d5fa34f70613181a.exe
2192	c29eb3ea929319a884bb8061faf36e855d93f44ba1362441d5fa34f70613181a.exe
2192	c29eb3ea929319a884bb8061faf36e855d93f44ba1362441d5fa34f70613181a.exe
2192	c29eb3ea929319a884bb8061faf36e855d93f44ba1362441d5fa34f70613181a.exe
2192	c29eb3ea929319a884bb8061faf36e855d93f44ba1362441d5fa34f70613181a.exe
2192	c29eb3ea929319a884bb8061faf36e855d93f44ba1362441d5fa34f70613181a.exe
2192	c29eb3ea929319a884bb8061faf36e855d93f44ba1362441d5fa34f70613181a.exe
2192	c29eb3ea929319a884bb8061faf36e855d93f44ba1362441d5fa34f70613181a.exe
2192	c29eb3ea929319a884bb8061faf36e855d93f44ba1362441d5fa34f70613181a.exe
2192	c29eb3ea929319a884bb8061faf36e855d93f44ba1362441d5fa34f70613181a.exe
2192	c29eb3ea929319a884bb8061faf36e855d93f44ba1362441d5fa34f70613181a.exe
2192	c29eb3ea929319a884bb8061faf36e855d93f44ba1362441d5fa34f70613181a.exe
2192	c29eb3ea929319a884bb8061faf36e855d93f44ba1362441d5fa34f70613181a.exe
2192	c29eb3ea929319a884bb8061faf36e855d93f44ba1362441d5fa34f70613181a.exe
2192	c29eb3ea929319a884bb8061faf36e855d93f44ba1362441d5fa34f70613181a.exe
2192	c29eb3ea929319a884bb8061faf36e855d93f44ba1362441d5fa34f70613181a.exe
2192	c29eb3ea929319a884bb8061faf36e855d93f44ba1362441d5fa34f70613181a.exe
2192	c29eb3ea929319a884bb8061faf36e855d93f44ba1362441d5fa34f70613181a.exe
2192	c29eb3ea929319a884bb8061faf36e855d93f44ba1362441d5fa34f70613181a.exe
2192	c29eb3ea929319a884bb8061faf36e855d93f44ba1362441d5fa34f70613181a.exe
2784	PTvrst.exe
2784	PTvrst.exe
2932	spolsvt.exe
2932	spolsvt.exe
2932	spolsvt.exe
2932	spolsvt.exe
2932	spolsvt.exe
2932	spolsvt.exe
2932	spolsvt.exe
2932	spolsvt.exe
2932	spolsvt.exe
2932	spolsvt.exe
2932	spolsvt.exe
2932	spolsvt.exe
2932	spolsvt.exe
2932	spolsvt.exe
2932	spolsvt.exe
2932	spolsvt.exe
2932	spolsvt.exe
2932	spolsvt.exe
2932	spolsvt.exe
2932	spolsvt.exe
2932	spolsvt.exe
2932	spolsvt.exe
2932	spolsvt.exe
2932	spolsvt.exe
2932	spolsvt.exe
2932	spolsvt.exe
2932	spolsvt.exe
2932	spolsvt.exe
2932	spolsvt.exe
2932	spolsvt.exe
2932	spolsvt.exe
2932	spolsvt.exe
2932	spolsvt.exe
2932	spolsvt.exe
2932	spolsvt.exe
2932	spolsvt.exe
2932	spolsvt.exe
2932	spolsvt.exe
2932	spolsvt.exe
2932	spolsvt.exe
2932	spolsvt.exe
2932	spolsvt.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2932	spolsvt.exe

Suspicious use of SetWindowsHookEx 6 IoCs

pid	Process
2192	c29eb3ea929319a884bb8061faf36e855d93f44ba1362441d5fa34f70613181a.exe
2192	c29eb3ea929319a884bb8061faf36e855d93f44ba1362441d5fa34f70613181a.exe
2784	PTvrst.exe
2784	PTvrst.exe
1088	spolsvt.exe
1088	spolsvt.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 2784 wrote to memory of 1088	2784	PTvrst.exe	95
PID 2784 wrote to memory of 1088	2784	PTvrst.exe	95
PID 2784 wrote to memory of 1088	2784	PTvrst.exe	95
PID 2784 wrote to memory of 1088	2784	PTvrst.exe	95
PID 2784 wrote to memory of 1088	2784	PTvrst.exe	95
PID 2784 wrote to memory of 1088	2784	PTvrst.exe	95
PID 2784 wrote to memory of 1088	2784	PTvrst.exe	95
PID 2784 wrote to memory of 1088	2784	PTvrst.exe	95
PID 2784 wrote to memory of 1088	2784	PTvrst.exe	95
PID 1088 wrote to memory of 2932	1088	spolsvt.exe	96
PID 1088 wrote to memory of 2932	1088	spolsvt.exe	96
PID 1088 wrote to memory of 2932	1088	spolsvt.exe	96
PID 1088 wrote to memory of 2932	1088	spolsvt.exe	96
PID 1088 wrote to memory of 2932	1088	spolsvt.exe	96
PID 1088 wrote to memory of 2932	1088	spolsvt.exe	96
PID 1088 wrote to memory of 2932	1088	spolsvt.exe	96
PID 1088 wrote to memory of 2932	1088	spolsvt.exe	96

C:\Users\Admin\AppData\Local\Temp\c29eb3ea929319a884bb8061faf36e855d93f44ba1362441d5fa34f70613181a.exe
"C:\Users\Admin\AppData\Local\Temp\c29eb3ea929319a884bb8061faf36e855d93f44ba1362441d5fa34f70613181a.exe"
1⤵
- Drops file in Windows directory
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
PID:2192

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
1⤵
PID:5044

C:\Users\Public\Documents\123\PTvrst.exe
"C:\Users\Public\Documents\123\PTvrst.exe"
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Executes dropped EXE
- Identifies Wine through registry keys
- Adds Run key to start application
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2784
- C:\WINDOWS\DNomb\spolsvt.exe
  C:\WINDOWS\DNomb\spolsvt.exe
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1088
- - C:\Users\Public\Documents\t\spolsvt.exe
    C:\Users\Public\Documents\t\spolsvt.exe
    3⤵
    - Executes dropped EXE
    - Checks processor information in registry
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2932

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Virtualization/Sandbox Evasion

T1497

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Virtualization/Sandbox Evasion

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Public\Documents\123\PTvrst.exe

Filesize
1.2MB

MD5
d22cfb5bfaeb1503b12b07e53ef0a149

SHA1
8ea2c85e363f551a159fabd65377affed4e417a1

SHA256
260464fb05210cfb30ef7a12d568f75eb781634b251d958cae8911948f6ca360

SHA512
151024cb2960b1ee485ded7ccbb753fe368a93fda5699af72e568667fa54bfb0d1732444e7b60efaab6d372204157cdb6abbf8862d0e89d612dd963342215e45

Download Submit
C:\Users\Public\Documents\123\PTvrst.exe

Filesize
1.2MB

MD5
d22cfb5bfaeb1503b12b07e53ef0a149

SHA1
8ea2c85e363f551a159fabd65377affed4e417a1

SHA256
260464fb05210cfb30ef7a12d568f75eb781634b251d958cae8911948f6ca360

SHA512
151024cb2960b1ee485ded7ccbb753fe368a93fda5699af72e568667fa54bfb0d1732444e7b60efaab6d372204157cdb6abbf8862d0e89d612dd963342215e45

Download Submit
C:\Users\Public\Documents\t\spolsvt.exe

Filesize
16KB

MD5
cdce4713e784ae069d73723034a957ff

SHA1
9a393a6bab6568f1a774fb753353223f11367e09

SHA256
b29e48102ecb3d3614e8980a8b8cc63dd2b993c6346f466479244ec2b47b69d8

SHA512
0a3a59a305cc2a6fad4e1315b0bcc5a4129595dfe1e8b703363fa02528d2d7c48d3fd22d365708be84a5557cf1916873df9563c454732f93f94a66e7e3b9fb0f

Download Submit
C:\Users\Public\Documents\t\spolsvt.exe

Filesize
16KB

MD5
cdce4713e784ae069d73723034a957ff

SHA1
9a393a6bab6568f1a774fb753353223f11367e09

SHA256
b29e48102ecb3d3614e8980a8b8cc63dd2b993c6346f466479244ec2b47b69d8

SHA512
0a3a59a305cc2a6fad4e1315b0bcc5a4129595dfe1e8b703363fa02528d2d7c48d3fd22d365708be84a5557cf1916873df9563c454732f93f94a66e7e3b9fb0f

Download Submit
C:\WINDOWS\DNomb\Mpec.mbt

Filesize
488KB

MD5
b080a7a33830f264ce71c2d4fc6cbed5

SHA1
3e2ac32e40441a059f24cb1bec27c1ef533641ae

SHA256
490acedca10ec4e45ca5cc26fcaf49f40358ae3edd413597cecccaab801ff982

SHA512
2d424f0901af4d787aaa2f8319de174ef3b386848bca3e72279f567d329afc570007680f54b551f5072c996a7323062ba1aaa3a04a54786dc6791660587f9c6b

Download Submit
C:\WINDOWS\DNomb\spolsvt.exe

Filesize
9KB

MD5
523d5c39f9d8d2375c3df68251fa2249

SHA1
d4ed365c44bec9246fc1a65a32a7791792647a10

SHA256
20e3dc90a3e83b6202e2a7f4603b60e5e859639cb68693426c400b13aaeabd78

SHA512
526e1bba30d03f1ac177c6ab7409187a730969c429cebef15da68ffcf44b3b93227781eebc827b2f7a0fa17c391e00a0e532263fd0167aeaeb0456f96cfe3ae4

Download Submit
C:\Windows\DNomb\spolsvt.exe

Filesize
9KB

MD5
523d5c39f9d8d2375c3df68251fa2249

SHA1
d4ed365c44bec9246fc1a65a32a7791792647a10

SHA256
20e3dc90a3e83b6202e2a7f4603b60e5e859639cb68693426c400b13aaeabd78

SHA512
526e1bba30d03f1ac177c6ab7409187a730969c429cebef15da68ffcf44b3b93227781eebc827b2f7a0fa17c391e00a0e532263fd0167aeaeb0456f96cfe3ae4

Download Submit
memory/1088-60-0x0000000000400000-0x0000000000516000-memory.dmp

Filesize
1.1MB

Download
memory/1088-66-0x0000000000400000-0x0000000000516000-memory.dmp

Filesize
1.1MB

Download
memory/1088-67-0x0000000000400000-0x0000000000516000-memory.dmp

Filesize
1.1MB

Download
memory/1088-61-0x0000000000400000-0x0000000000516000-memory.dmp

Filesize
1.1MB

Download
memory/1088-59-0x0000000000400000-0x0000000000516000-memory.dmp

Filesize
1.1MB

Download
memory/1088-58-0x0000000000400000-0x0000000000516000-memory.dmp

Filesize
1.1MB

Download
memory/2192-6-0x0000000002CE0000-0x0000000002CE1000-memory.dmp

Filesize
4KB

Download
memory/2192-0-0x0000000000400000-0x0000000000DEC000-memory.dmp

Filesize
9.9MB

Download
memory/2192-105-0x0000000000400000-0x0000000000DEC000-memory.dmp

Filesize
9.9MB

Download
memory/2192-24-0x0000000000400000-0x0000000000DEC000-memory.dmp

Filesize
9.9MB

Download
memory/2192-9-0x0000000000400000-0x0000000000DEC000-memory.dmp

Filesize
9.9MB

Download
memory/2192-8-0x0000000002CF0000-0x0000000002CF1000-memory.dmp

Filesize
4KB

Download
memory/2192-5-0x0000000002CC0000-0x0000000002CC1000-memory.dmp

Filesize
4KB

Download
memory/2192-4-0x0000000002CB0000-0x0000000002CB1000-memory.dmp

Filesize
4KB

Download
memory/2192-3-0x0000000002CA0000-0x0000000002CA1000-memory.dmp

Filesize
4KB

Download
memory/2192-2-0x0000000002C70000-0x0000000002C71000-memory.dmp

Filesize
4KB

Download
memory/2192-1-0x0000000000E40000-0x0000000000E41000-memory.dmp

Filesize
4KB

Download
memory/2784-33-0x0000000077B34000-0x0000000077B36000-memory.dmp

Filesize
8KB

Download
memory/2784-40-0x0000000004770000-0x0000000004771000-memory.dmp

Filesize
4KB

Download
memory/2784-48-0x0000000004900000-0x0000000004901000-memory.dmp

Filesize
4KB

Download
memory/2784-47-0x0000000004860000-0x0000000004861000-memory.dmp

Filesize
4KB

Download
memory/2784-49-0x0000000004740000-0x0000000004741000-memory.dmp

Filesize
4KB

Download
memory/2784-50-0x0000000004910000-0x0000000004911000-memory.dmp

Filesize
4KB

Download
memory/2784-51-0x0000000004790000-0x0000000004791000-memory.dmp

Filesize
4KB

Download
memory/2784-52-0x0000000004840000-0x0000000004842000-memory.dmp

Filesize
8KB

Download
memory/2784-53-0x0000000000400000-0x00000000006A2000-memory.dmp

Filesize
2.6MB

Download
memory/2784-55-0x0000000004870000-0x0000000004871000-memory.dmp

Filesize
4KB

Download
memory/2784-54-0x00000000048D0000-0x00000000048D2000-memory.dmp

Filesize
8KB

Download
memory/2784-43-0x00000000047D0000-0x00000000047D1000-memory.dmp

Filesize
4KB

Download
memory/2784-45-0x00000000047C0000-0x00000000047C1000-memory.dmp

Filesize
4KB

Download
memory/2784-44-0x0000000004760000-0x0000000004761000-memory.dmp

Filesize
4KB

Download
memory/2784-42-0x00000000047A0000-0x00000000047A1000-memory.dmp

Filesize
4KB

Download
memory/2784-46-0x0000000004810000-0x0000000004811000-memory.dmp

Filesize
4KB

Download
memory/2784-41-0x0000000004800000-0x0000000004801000-memory.dmp

Filesize
4KB

Download
memory/2784-39-0x00000000047E0000-0x00000000047E2000-memory.dmp

Filesize
8KB

Download
memory/2784-38-0x0000000004780000-0x0000000004781000-memory.dmp

Filesize
4KB

Download
memory/2784-37-0x00000000047B0000-0x00000000047B1000-memory.dmp

Filesize
4KB

Download
memory/2784-31-0x0000000000400000-0x00000000006A2000-memory.dmp

Filesize
2.6MB

Download
memory/2784-94-0x0000000000400000-0x00000000006A2000-memory.dmp

Filesize
2.6MB

Download
memory/2784-35-0x00000000047F0000-0x00000000047F1000-memory.dmp

Filesize
4KB

Download
memory/2784-36-0x0000000004750000-0x0000000004751000-memory.dmp

Filesize
4KB

Download
memory/2932-75-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2932-79-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2932-80-0x0000000010000000-0x000000001002A000-memory.dmp

Filesize
168KB

Download
memory/2932-74-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2932-73-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download