fatalrat | 46a09a0d189f96a58c366ff026baa4527437c2088aec83b88ad32dfd532b038d

Analysis

max time kernel
117s
max time network
168s
platform
windows7_x64
resource
win7-20231020-en
resource tags

arch:x64arch:x86image:win7-20231020-enlocale:en-usos:windows7-x64system
submitted
01/11/2023, 22:03

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General

Target

46a09a0d189f96a58c366ff026baa4527437c2088aec83b88ad32dfd532b038d.dll
Size

74KB
MD5

45f8d8d63b31cd02fc6cf4403d2fbfad
SHA1

431da6e0aa9b524f45ee6574fffa59d200b4a92d
SHA256

46a09a0d189f96a58c366ff026baa4527437c2088aec83b88ad32dfd532b038d
SHA512

c46762f18fa156e836eacee2acc3700855f69ddd801bc89978aa9a7a0950e40a5b53d31af250862d317c9f61bb6238506b1daa4c1f8d9078676f03a8c1859468
SSDEEP

1536:Rpi13988ZAcYPxykieJBkugszIkRkAkkkp7kkkkZkiJ++9gL45+ZVYHvzf9fhsiC:Rpi1398qAcYPxykieJBkugszIkRkAkk/

Score

10^/10

fatalrat infostealer rat

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
behavioral1/memory/2044-6-0x0000000000750000-0x000000000077A000-memory.dmp	fatalrat

Blocklisted process makes network request 2 IoCs

flow	pid	Process
2	2044	rundll32.exe
3	2044	rundll32.exe

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	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	rundll32.exe

Suspicious behavior: EnumeratesProcesses 51 IoCs

pid	Process
2044	rundll32.exe
2044	rundll32.exe
2044	rundll32.exe
2044	rundll32.exe
2044	rundll32.exe
2044	rundll32.exe
2044	rundll32.exe
2044	rundll32.exe
2044	rundll32.exe
2044	rundll32.exe
2044	rundll32.exe
2044	rundll32.exe
2044	rundll32.exe
2044	rundll32.exe
2044	rundll32.exe
2044	rundll32.exe
2044	rundll32.exe
2044	rundll32.exe
2044	rundll32.exe
2044	rundll32.exe
2044	rundll32.exe
2044	rundll32.exe
2044	rundll32.exe
2044	rundll32.exe
2044	rundll32.exe
2044	rundll32.exe
2044	rundll32.exe
2044	rundll32.exe
2044	rundll32.exe
2044	rundll32.exe
2044	rundll32.exe
2044	rundll32.exe
2044	rundll32.exe
2044	rundll32.exe
2044	rundll32.exe
2044	rundll32.exe
2044	rundll32.exe
2044	rundll32.exe
2044	rundll32.exe
2044	rundll32.exe
2044	rundll32.exe
2044	rundll32.exe
2044	rundll32.exe
2044	rundll32.exe
2044	rundll32.exe
2044	rundll32.exe
2044	rundll32.exe
2044	rundll32.exe
2044	rundll32.exe
2044	rundll32.exe
2044	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2044	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2200 wrote to memory of 2044	2200	rundll32.exe	28
PID 2200 wrote to memory of 2044	2200	rundll32.exe	28
PID 2200 wrote to memory of 2044	2200	rundll32.exe	28
PID 2200 wrote to memory of 2044	2200	rundll32.exe	28
PID 2200 wrote to memory of 2044	2200	rundll32.exe	28
PID 2200 wrote to memory of 2044	2200	rundll32.exe	28
PID 2200 wrote to memory of 2044	2200	rundll32.exe	28

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\46a09a0d189f96a58c366ff026baa4527437c2088aec83b88ad32dfd532b038d.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2200
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\46a09a0d189f96a58c366ff026baa4527437c2088aec83b88ad32dfd532b038d.dll,#1
  2⤵
  - Blocklisted process makes network request
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2044

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2044-0-0x00000000007C0000-0x00000000007F5000-memory.dmp

Filesize
212KB

Download
memory/2044-1-0x0000000000190000-0x0000000000191000-memory.dmp

Filesize
4KB

Download
memory/2044-3-0x0000000000820000-0x0000000000858000-memory.dmp

Filesize
224KB

Download
memory/2044-2-0x0000000010000000-0x0000000010031000-memory.dmp

Filesize
196KB

Download
memory/2044-6-0x0000000000750000-0x000000000077A000-memory.dmp

Filesize
168KB

Download
memory/2044-11-0x00000000007C0000-0x00000000007F5000-memory.dmp

Filesize
212KB

Download