fatalrat | c7ab94056718540056db30adea4e36cb7f7ede270006d90676dd1cdd9af2a17f

General

Target

c7ab94056718540056db30adea4e36cb7f7ede270006d90676dd1cdd9af2a17fN.exe
Size

1.1MB
MD5

33392cca2d55ac4c197a4b60ccb3faa0
SHA1

99e330906d632d1b78fd58246b8421a9ca29abfa
SHA256

c7ab94056718540056db30adea4e36cb7f7ede270006d90676dd1cdd9af2a17f
SHA512

be64dccd42ec19e9b38352165d1970465c391458147d3513ed6493b76a55e8012fcc9814ee3046017bec161994a7e45520f9ce65aa2c3b63610853594ff8349b
SSDEEP

24576:8HojlSSKXUne4vmOmU8tpJKI12CiwGo8YyvmWP61TkP6hE:8H0lSSKX+XvnG/1EPDBvmWPhP4E

Score

10^/10

fatalrat discovery infostealer rat

Malware Config

Signatures

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

Fatal Rat payload 4 IoCs

rat infostealer

resource	yara_rule
behavioral1/memory/2448-1-0x0000000010000000-0x000000001002A000-memory.dmp	fatalrat
behavioral1/memory/2080-18-0x0000000010000000-0x000000001002A000-memory.dmp	fatalrat
behavioral1/memory/2448-17-0x0000000000400000-0x0000000000512000-memory.dmp	fatalrat
behavioral1/memory/2080-23-0x0000000000400000-0x0000000000512000-memory.dmp	fatalrat

Checks BIOS information in registry 2 TTPs 2 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	c7ab94056718540056db30adea4e36cb7f7ede270006d90676dd1cdd9af2a17fN.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	c7ab94056718540056db30adea4e36cb7f7ede270006d90676dd1cdd9af2a17fN.exe

Executes dropped EXE 1 IoCs

pid	Process
2080	c7ab94056718540056db30adea4e36cb7f7ede270006d90676dd1cdd9af2a17fN.exe

Loads dropped DLL 2 IoCs

pid	Process
2448	c7ab94056718540056db30adea4e36cb7f7ede270006d90676dd1cdd9af2a17fN.exe
2448	c7ab94056718540056db30adea4e36cb7f7ede270006d90676dd1cdd9af2a17fN.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
2448	c7ab94056718540056db30adea4e36cb7f7ede270006d90676dd1cdd9af2a17fN.exe
2080	c7ab94056718540056db30adea4e36cb7f7ede270006d90676dd1cdd9af2a17fN.exe

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	c7ab94056718540056db30adea4e36cb7f7ede270006d90676dd1cdd9af2a17fN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	c7ab94056718540056db30adea4e36cb7f7ede270006d90676dd1cdd9af2a17fN.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2448	c7ab94056718540056db30adea4e36cb7f7ede270006d90676dd1cdd9af2a17fN.exe
Token: SeDebugPrivilege	2080	c7ab94056718540056db30adea4e36cb7f7ede270006d90676dd1cdd9af2a17fN.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2448 wrote to memory of 2080	2448	c7ab94056718540056db30adea4e36cb7f7ede270006d90676dd1cdd9af2a17fN.exe	31
PID 2448 wrote to memory of 2080	2448	c7ab94056718540056db30adea4e36cb7f7ede270006d90676dd1cdd9af2a17fN.exe	31
PID 2448 wrote to memory of 2080	2448	c7ab94056718540056db30adea4e36cb7f7ede270006d90676dd1cdd9af2a17fN.exe	31
PID 2448 wrote to memory of 2080	2448	c7ab94056718540056db30adea4e36cb7f7ede270006d90676dd1cdd9af2a17fN.exe	31

C:\Users\Admin\AppData\Local\Temp\c7ab94056718540056db30adea4e36cb7f7ede270006d90676dd1cdd9af2a17fN.exe
"C:\Users\Admin\AppData\Local\Temp\c7ab94056718540056db30adea4e36cb7f7ede270006d90676dd1cdd9af2a17fN.exe"
1⤵
- Checks BIOS information in registry
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2448
- C:\Users\Admin\AppData\Local\c7ab94056718540056db30adea4e36cb7f7ede270006d90676dd1cdd9af2a17fN.exe
  "C:\Users\Admin\AppData\Local\c7ab94056718540056db30adea4e36cb7f7ede270006d90676dd1cdd9af2a17fN.exe"
  2⤵
  - Checks BIOS information in registry
  - Executes dropped EXE
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:2080

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\c7ab94056718540056db30adea4e36cb7f7ede270006d90676dd1cdd9af2a17fN.exe

Filesize
1.1MB

MD5
33392cca2d55ac4c197a4b60ccb3faa0

SHA1
99e330906d632d1b78fd58246b8421a9ca29abfa

SHA256
c7ab94056718540056db30adea4e36cb7f7ede270006d90676dd1cdd9af2a17f

SHA512
be64dccd42ec19e9b38352165d1970465c391458147d3513ed6493b76a55e8012fcc9814ee3046017bec161994a7e45520f9ce65aa2c3b63610853594ff8349b

Download Submit
memory/2080-18-0x0000000010000000-0x000000001002A000-memory.dmp

Filesize
168KB

Download
memory/2080-23-0x0000000000400000-0x0000000000512000-memory.dmp

Filesize
1.1MB

Download
memory/2448-0-0x0000000000400000-0x0000000000512000-memory.dmp

Filesize
1.1MB

Download
memory/2448-1-0x0000000010000000-0x000000001002A000-memory.dmp

Filesize
168KB

Download
memory/2448-17-0x0000000000400000-0x0000000000512000-memory.dmp

Filesize
1.1MB

Download

Analysis

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