fatalrat | a6c02e46a91c89a18c9916932995b28155443c248b8ebcf94c7ddd7bd3ce82df

Analysis

max time kernel
136s
max time network
150s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
19-07-2024 13:52

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General

Target

a6c02e46a91c89a18c9916932995b28155443c248b8ebcf94c7ddd7bd3ce82df.dll
Size

124KB
MD5

b9bdbc398c141c0612d34e505378031f
SHA1

74b3cea09797b0512ba92c135ab1b19624236447
SHA256

a6c02e46a91c89a18c9916932995b28155443c248b8ebcf94c7ddd7bd3ce82df
SHA512

3d7fb066ac6abe10a209fdfde5ce82cf1f6d19a4dc55203c7b542feb11972273c473468c3f1ee615dadce40e9f4cca7d8899188f0ca4a923f961839511b961ec
SSDEEP

3072:SAdJ0QJXjyGX21G3ihVTZrLZkjg+mjDsvwUOVyrdy:3j02XjyiL3ihVR2jf84nOVyrdy

Score

10^/10

fatalrat 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 2 IoCs

rat infostealer

Processes:

resource	yara_rule
behavioral1/memory/2320-2-0x00000000001E0000-0x00000000001FD000-memory.dmp	fatalrat
behavioral1/memory/2320-7-0x0000000010000000-0x0000000010044000-memory.dmp	fatalrat

Blocklisted process makes network request 5 IoCs

Processes:

rundll32.exe

flow	pid	Process
2	2320	rundll32.exe
5	2320	rundll32.exe
6	2320	rundll32.exe
7	2320	rundll32.exe
8	2320	rundll32.exe

VMProtect packed file 2 IoCs

Detects executables packed with VMProtect commercial packer.

vmprotect

Processes:

resource	yara_rule
behavioral1/memory/2320-1-0x0000000010000000-0x0000000010044000-memory.dmp	vmprotect
behavioral1/memory/2320-7-0x0000000010000000-0x0000000010044000-memory.dmp	vmprotect

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

rundll32.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-940600906-3464502421-4240639183-1000\Software\Microsoft\Windows\CurrentVersion\Run\ = "C:\\Windows\\SysWOW64\\rundll32.exe"	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

rundll32.exe

description	pid	Process
Token: SeDebugPrivilege	2320	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

rundll32.exe

description	pid	Process	procid_target
PID 2136 wrote to memory of 2320	2136	rundll32.exe	30
PID 2136 wrote to memory of 2320	2136	rundll32.exe	30
PID 2136 wrote to memory of 2320	2136	rundll32.exe	30
PID 2136 wrote to memory of 2320	2136	rundll32.exe	30
PID 2136 wrote to memory of 2320	2136	rundll32.exe	30
PID 2136 wrote to memory of 2320	2136	rundll32.exe	30
PID 2136 wrote to memory of 2320	2136	rundll32.exe	30

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\a6c02e46a91c89a18c9916932995b28155443c248b8ebcf94c7ddd7bd3ce82df.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2136
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\a6c02e46a91c89a18c9916932995b28155443c248b8ebcf94c7ddd7bd3ce82df.dll,#1
  2⤵
  - Blocklisted process makes network request
  - Adds Run key to start application
  - Suspicious use of AdjustPrivilegeToken
  PID:2320

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

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2320-1-0x0000000010000000-0x0000000010044000-memory.dmp

Filesize
272KB

Download
memory/2320-0-0x0000000010000000-0x0000000010044000-memory.dmp

Filesize
272KB

Download
memory/2320-2-0x00000000001E0000-0x00000000001FD000-memory.dmp

Filesize
116KB

Download
memory/2320-7-0x0000000010000000-0x0000000010044000-memory.dmp

Filesize
272KB

Download