fatalrat | ef784be3a22fd220f7e409d9d821e9b8802afb63ba611c68a6d0887f85d5584c

General

Target

ef784be3a22fd220f7e409d9d821e9b8802afb63ba611c68a6d0887f85d5584c.exe
Size

4.0MB
MD5

c1c1898e903d510a040ba12b7838b2e5
SHA1

91e814f99ace82cad8cc8bde919e7148bd3582a7
SHA256

ef784be3a22fd220f7e409d9d821e9b8802afb63ba611c68a6d0887f85d5584c
SHA512

fa073c10de4f3abc897f4f19bb6c4b6e72a5f0e3a27d6266a158bc8a236a44fe01c2e52a37d3a2b0cf6f78a6bc9e3a1bf69affa476b95e1060a6d3e226fee4c2
SSDEEP

98304:t3/+58f1r2yIrOqFH3aCv6M8mqHS4sjsmRzhIn98E3z9ADmrQ9CZlT:tv+y23Zt8mqRsfRKnWE3uDmwCf

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
behavioral2/memory/3464-26-0x0000000001210000-0x000000000123A000-memory.dmp	fatalrat

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation	ef784be3a22fd220f7e409d9d821e9b8802afb63ba611c68a6d0887f85d5584c.exe

Executes dropped EXE 1 IoCs

pid	Process
3464	Pepper.exe

Loads dropped DLL 1 IoCs

pid	Process
3464	Pepper.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
4436	ef784be3a22fd220f7e409d9d821e9b8802afb63ba611c68a6d0887f85d5584c.exe
4436	ef784be3a22fd220f7e409d9d821e9b8802afb63ba611c68a6d0887f85d5584c.exe

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\Funshion\cvsd.xml	ef784be3a22fd220f7e409d9d821e9b8802afb63ba611c68a6d0887f85d5584c.exe
File created	C:\Program Files (x86)\Funshion\Pepper.exe	ef784be3a22fd220f7e409d9d821e9b8802afb63ba611c68a6d0887f85d5584c.exe
File created	C:\Program Files (x86)\Funshion\libcef.dll	ef784be3a22fd220f7e409d9d821e9b8802afb63ba611c68a6d0887f85d5584c.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4436	ef784be3a22fd220f7e409d9d821e9b8802afb63ba611c68a6d0887f85d5584c.exe
4436	ef784be3a22fd220f7e409d9d821e9b8802afb63ba611c68a6d0887f85d5584c.exe
4436	ef784be3a22fd220f7e409d9d821e9b8802afb63ba611c68a6d0887f85d5584c.exe
4436	ef784be3a22fd220f7e409d9d821e9b8802afb63ba611c68a6d0887f85d5584c.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3464	Pepper.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4436	ef784be3a22fd220f7e409d9d821e9b8802afb63ba611c68a6d0887f85d5584c.exe
4436	ef784be3a22fd220f7e409d9d821e9b8802afb63ba611c68a6d0887f85d5584c.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4436 wrote to memory of 3464	4436	ef784be3a22fd220f7e409d9d821e9b8802afb63ba611c68a6d0887f85d5584c.exe	90
PID 4436 wrote to memory of 3464	4436	ef784be3a22fd220f7e409d9d821e9b8802afb63ba611c68a6d0887f85d5584c.exe	90
PID 4436 wrote to memory of 3464	4436	ef784be3a22fd220f7e409d9d821e9b8802afb63ba611c68a6d0887f85d5584c.exe	90

C:\Users\Admin\AppData\Local\Temp\ef784be3a22fd220f7e409d9d821e9b8802afb63ba611c68a6d0887f85d5584c.exe
"C:\Users\Admin\AppData\Local\Temp\ef784be3a22fd220f7e409d9d821e9b8802afb63ba611c68a6d0887f85d5584c.exe"
1⤵
- Checks computer location settings
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4436
- C:\Program Files (x86)\Funshion\Pepper.exe
  "C:\Program Files (x86)\Funshion\Pepper.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of AdjustPrivilegeToken
  PID:3464

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Program Files (x86)\Funshion\Pepper.exe

Filesize
418KB

MD5
c174034e771afebd7272e5820afe013f

SHA1
85f73a76f9897786a32aad1ebefa4aaabf9d4c78

SHA256
c42da2f6d8a4842918017c292c1071d72d898f5fbf3510cf5f98800c7fcb08f0

SHA512
b43ac1cd1f455d5bc447738304d02642e118de3ed800da4ac44b4bc00fbb6c8118632cad4d079a870256c34195c649fcf1112ef1f97f479c98aca265e8219d5d

Download Submit
C:\Program Files (x86)\Funshion\libcef.dll

Filesize
100KB

MD5
8a675f90a3af0c8be0851d193caebec3

SHA1
114c4a2929fe567999fe0b6e7e0abab9d1929019

SHA256
892f8aa9fb0c0d2d0375ce923ecf62f6596022fd1a6d1970413998aa46500631

SHA512
42349359b592d2e40b390adef8769ce005eb9989f17d45dd7e70a206c0df8e5b13b3da8cd66eb9016d6953fbeadee96db033839c45ccdf06f9e5434f358a2540

Download Submit
C:\ProgramData\afd.bin

Filesize
198KB

MD5
f618881abb247efacf40058de8ed591d

SHA1
4e3ccd93688b0bd747cffd1a0d02213b4e89573c

SHA256
618505c71052ffbbfa4efc3b1eb79358bd244b4c3670ff6625a57d989950d3da

SHA512
86f58f8577e8bf576cdc7b480ae5cb2741a175b03657bdec88587f90fda7cc5cf76fe3dae40fa1ad096c0922df3b4d6b01f1cba0cfd9ee3970554b03ed338cf0

Download Submit
memory/3464-20-0x0000000010000000-0x0000000010031000-memory.dmp

Filesize
196KB

Download
memory/3464-25-0x0000000002D00000-0x0000000002D64000-memory.dmp

Filesize
400KB

Download
memory/3464-26-0x0000000001210000-0x000000000123A000-memory.dmp

Filesize
168KB

Download
memory/4436-0-0x0000000000E60000-0x0000000001B88000-memory.dmp

Filesize
13.2MB

Download
memory/4436-1-0x000000007F040000-0x000000007F411000-memory.dmp

Filesize
3.8MB

Download
memory/4436-2-0x00000000775D2000-0x00000000775D3000-memory.dmp

Filesize
4KB

Download
memory/4436-19-0x0000000000E60000-0x0000000001B88000-memory.dmp

Filesize
13.2MB

Download
memory/4436-31-0x000000007F040000-0x000000007F411000-memory.dmp

Filesize
3.8MB

Download

Analysis

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