fatalrat | 9c7feb98fb5804f1f80dd03db1f84a06b68ea6043d2d34ab53edce82b83827b2

Analysis

max time kernel
142s
max time network
142s
platform
windows7_x64
resource
win7-20220414-en
submitted
21-05-2022 14:57

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General

Target

Perl510.dll
Size

924KB
MD5

dbf8b9ab8ae650d5b452240c0e9c90df
SHA1

1215872c6f7306d6ba14133eb706483f04445885
SHA256

9c7feb98fb5804f1f80dd03db1f84a06b68ea6043d2d34ab53edce82b83827b2
SHA512

f9ab16d7946f4dfab4abbe368d6863dbaa1e0c49b6b051ff44eecdf0053ee0d1204272b08ffc925d76335874ca1099ebebc84ba80be3aa9c9bd5e5007a62d3a9

Score

10^/10

fatalrat infostealer persistence rat suricata

Malware Config

Signatures

FatalRat
FatalRat is a modular infostealer family written in C++ first appearing in June 2021.
infostealer rat fatalrat
suricata: ET MALWARE FatalRAT CnC Activity
suricata: ET MALWARE FatalRAT CnC Activity
suricata

Fatal Rat Payload 1 IoCs

rat infostealer

Processes:

resource	yara_rule
behavioral1/memory/1992-4613-0x0000000010000000-0x00000000100E7000-memory.dmp	fatalrat

Blocklisted process makes network request 1 IoCs

Processes:

rundll32.exe

flow pid process

2 1992 rundll32.exe

flow	pid	process
2	1992	rundll32.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

rundll32.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows\CurrentVersion\Run\ = "C:\\Windows\\SysWOW64\\rundll32.exe"	rundll32.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

Processes:

rundll32.exe

pid process

1992 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

Processes:

rundll32.exe

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

Processes:

rundll32.exe

pid	process
1992	rundll32.exe
1992	rundll32.exe
1992	rundll32.exe
1992	rundll32.exe
1992	rundll32.exe
1992	rundll32.exe
1992	rundll32.exe
1992	rundll32.exe
1992	rundll32.exe
1992	rundll32.exe
1992	rundll32.exe
1992	rundll32.exe
1992	rundll32.exe
1992	rundll32.exe
1992	rundll32.exe
1992	rundll32.exe
1992	rundll32.exe
1992	rundll32.exe
1992	rundll32.exe
1992	rundll32.exe
1992	rundll32.exe
1992	rundll32.exe
1992	rundll32.exe
1992	rundll32.exe
1992	rundll32.exe
1992	rundll32.exe
1992	rundll32.exe
1992	rundll32.exe
1992	rundll32.exe
1992	rundll32.exe
1992	rundll32.exe
1992	rundll32.exe
1992	rundll32.exe
1992	rundll32.exe
1992	rundll32.exe
1992	rundll32.exe
1992	rundll32.exe
1992	rundll32.exe
1992	rundll32.exe
1992	rundll32.exe
1992	rundll32.exe
1992	rundll32.exe
1992	rundll32.exe
1992	rundll32.exe
1992	rundll32.exe
1992	rundll32.exe
1992	rundll32.exe
1992	rundll32.exe
1992	rundll32.exe
1992	rundll32.exe
1992	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

rundll32.exe

description pid process

Token: SeDebugPrivilege 1992 rundll32.exe

description	pid	process
Token: SeDebugPrivilege	1992	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

rundll32.exe

description	pid	process	target process
PID 872 wrote to memory of 1992	872	rundll32.exe	rundll32.exe
PID 872 wrote to memory of 1992	872	rundll32.exe	rundll32.exe
PID 872 wrote to memory of 1992	872	rundll32.exe	rundll32.exe
PID 872 wrote to memory of 1992	872	rundll32.exe	rundll32.exe
PID 872 wrote to memory of 1992	872	rundll32.exe	rundll32.exe
PID 872 wrote to memory of 1992	872	rundll32.exe	rundll32.exe
PID 872 wrote to memory of 1992	872	rundll32.exe	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\Perl510.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:872

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\Perl510.dll,#1
2⤵
- Blocklisted process makes network request
- Adds Run key to start application
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1992

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/1992-54-0x0000000000000000-mapping.dmp

Download
memory/1992-55-0x00000000768D1000-0x00000000768D3000-memory.dmp

Filesize
8KB

Download
memory/1992-57-0x0000000075710000-0x0000000075757000-memory.dmp

Filesize
284KB

Download
memory/1992-464-0x0000000002410000-0x0000000002521000-memory.dmp

Filesize
1.1MB

Download
memory/1992-465-0x0000000002410000-0x0000000002521000-memory.dmp

Filesize
1.1MB

Download
memory/1992-466-0x0000000002410000-0x0000000002521000-memory.dmp

Filesize
1.1MB

Download
memory/1992-463-0x0000000002410000-0x0000000002521000-memory.dmp

Filesize
1.1MB

Download
memory/1992-467-0x0000000002410000-0x0000000002521000-memory.dmp

Filesize
1.1MB

Download
memory/1992-468-0x0000000002410000-0x0000000002521000-memory.dmp

Filesize
1.1MB

Download
memory/1992-471-0x0000000002410000-0x0000000002521000-memory.dmp

Filesize
1.1MB

Download
memory/1992-469-0x0000000002410000-0x0000000002521000-memory.dmp

Filesize
1.1MB

Download
memory/1992-472-0x0000000002410000-0x0000000002521000-memory.dmp

Filesize
1.1MB

Download
memory/1992-470-0x0000000002410000-0x0000000002521000-memory.dmp

Filesize
1.1MB

Download
memory/1992-474-0x0000000002410000-0x0000000002521000-memory.dmp

Filesize
1.1MB

Download
memory/1992-475-0x0000000002410000-0x0000000002521000-memory.dmp

Filesize
1.1MB

Download
memory/1992-473-0x0000000002410000-0x0000000002521000-memory.dmp

Filesize
1.1MB

Download
memory/1992-478-0x0000000002410000-0x0000000002521000-memory.dmp

Filesize
1.1MB

Download
memory/1992-476-0x0000000002410000-0x0000000002521000-memory.dmp

Filesize
1.1MB

Download
memory/1992-477-0x0000000002410000-0x0000000002521000-memory.dmp

Filesize
1.1MB

Download
memory/1992-479-0x0000000002410000-0x0000000002521000-memory.dmp

Filesize
1.1MB

Download
memory/1992-480-0x0000000002410000-0x0000000002521000-memory.dmp

Filesize
1.1MB

Download
memory/1992-481-0x0000000002410000-0x0000000002521000-memory.dmp

Filesize
1.1MB

Download
memory/1992-482-0x0000000002410000-0x0000000002521000-memory.dmp

Filesize
1.1MB

Download
memory/1992-483-0x0000000002410000-0x0000000002521000-memory.dmp

Filesize
1.1MB

Download
memory/1992-485-0x0000000002410000-0x0000000002521000-memory.dmp

Filesize
1.1MB

Download
memory/1992-484-0x0000000002410000-0x0000000002521000-memory.dmp

Filesize
1.1MB

Download
memory/1992-486-0x0000000002410000-0x0000000002521000-memory.dmp

Filesize
1.1MB

Download
memory/1992-488-0x0000000002410000-0x0000000002521000-memory.dmp

Filesize
1.1MB

Download
memory/1992-489-0x0000000002410000-0x0000000002521000-memory.dmp

Filesize
1.1MB

Download
memory/1992-487-0x0000000002410000-0x0000000002521000-memory.dmp

Filesize
1.1MB

Download
memory/1992-490-0x0000000002410000-0x0000000002521000-memory.dmp

Filesize
1.1MB

Download
memory/1992-492-0x0000000002410000-0x0000000002521000-memory.dmp

Filesize
1.1MB

Download
memory/1992-491-0x0000000002410000-0x0000000002521000-memory.dmp

Filesize
1.1MB

Download
memory/1992-494-0x0000000002410000-0x0000000002521000-memory.dmp

Filesize
1.1MB

Download
memory/1992-493-0x0000000002410000-0x0000000002521000-memory.dmp

Filesize
1.1MB

Download
memory/1992-496-0x0000000002410000-0x0000000002521000-memory.dmp

Filesize
1.1MB

Download
memory/1992-495-0x0000000002410000-0x0000000002521000-memory.dmp

Filesize
1.1MB

Download
memory/1992-498-0x0000000002410000-0x0000000002521000-memory.dmp

Filesize
1.1MB

Download
memory/1992-497-0x0000000002410000-0x0000000002521000-memory.dmp

Filesize
1.1MB

Download
memory/1992-499-0x0000000002410000-0x0000000002521000-memory.dmp

Filesize
1.1MB

Download
memory/1992-500-0x0000000002410000-0x0000000002521000-memory.dmp

Filesize
1.1MB

Download
memory/1992-501-0x0000000002410000-0x0000000002521000-memory.dmp

Filesize
1.1MB

Download
memory/1992-504-0x0000000002410000-0x0000000002521000-memory.dmp

Filesize
1.1MB

Download
memory/1992-502-0x0000000002410000-0x0000000002521000-memory.dmp

Filesize
1.1MB

Download
memory/1992-505-0x0000000002410000-0x0000000002521000-memory.dmp

Filesize
1.1MB

Download
memory/1992-503-0x0000000002410000-0x0000000002521000-memory.dmp

Filesize
1.1MB

Download
memory/1992-506-0x0000000002410000-0x0000000002521000-memory.dmp

Filesize
1.1MB

Download
memory/1992-508-0x0000000002410000-0x0000000002521000-memory.dmp

Filesize
1.1MB

Download
memory/1992-507-0x0000000002410000-0x0000000002521000-memory.dmp

Filesize
1.1MB

Download
memory/1992-509-0x0000000002410000-0x0000000002521000-memory.dmp

Filesize
1.1MB

Download
memory/1992-510-0x0000000002410000-0x0000000002521000-memory.dmp

Filesize
1.1MB

Download
memory/1992-511-0x0000000002410000-0x0000000002521000-memory.dmp

Filesize
1.1MB

Download
memory/1992-512-0x0000000002410000-0x0000000002521000-memory.dmp

Filesize
1.1MB

Download
memory/1992-513-0x0000000002410000-0x0000000002521000-memory.dmp

Filesize
1.1MB

Download
memory/1992-515-0x0000000002410000-0x0000000002521000-memory.dmp

Filesize
1.1MB

Download
memory/1992-514-0x0000000002410000-0x0000000002521000-memory.dmp

Filesize
1.1MB

Download
memory/1992-516-0x0000000002410000-0x0000000002521000-memory.dmp

Filesize
1.1MB

Download
memory/1992-518-0x0000000002410000-0x0000000002521000-memory.dmp

Filesize
1.1MB

Download
memory/1992-517-0x0000000002410000-0x0000000002521000-memory.dmp

Filesize
1.1MB

Download
memory/1992-520-0x0000000002410000-0x0000000002521000-memory.dmp

Filesize
1.1MB

Download
memory/1992-519-0x0000000002410000-0x0000000002521000-memory.dmp

Filesize
1.1MB

Download
memory/1992-522-0x0000000002410000-0x0000000002521000-memory.dmp

Filesize
1.1MB

Download
memory/1992-521-0x0000000002410000-0x0000000002521000-memory.dmp

Filesize
1.1MB

Download
memory/1992-523-0x0000000002410000-0x0000000002521000-memory.dmp

Filesize
1.1MB

Download
memory/1992-524-0x0000000002410000-0x0000000002521000-memory.dmp

Filesize
1.1MB

Download
memory/1992-4613-0x0000000010000000-0x00000000100E7000-memory.dmp

Filesize
924KB

Download