fatalrat | bbfed27c40fe643add2d5c29571bdf35373a5144ed46e02e5602f8b12336b6a5

General

Target

bbfed27c40fe643add2d5c29571bdf35373a5144ed46e02e5602f8b12336b6a5.exe
Size

3.9MB
MD5

b4853b1f25e77f9c49ac0977a6976e88
SHA1

cbb54eb656efc0ac7ff1be0062d42cde4c5689e5
SHA256

bbfed27c40fe643add2d5c29571bdf35373a5144ed46e02e5602f8b12336b6a5
SHA512

4dde6af63dc6a4db5e4744a1a3d76abf5e20b65b31050018c8075d656d4c2a00b6f7d7f760edbc42a8cc265d762c361ced7bf8555b8252a56cfa42437a014403
SSDEEP

49152:N9K4eAA3e/ttICC2K+5Ia9sF3/JplynF5C/VcYpD/UVJ1BclhE5di8UR0mxvn7Z:NQ4TEe1rCtYsF3lyF5C/VcixhE5rPKP

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/4756-30-0x0000000002750000-0x000000000277A000-memory.dmp	fatalrat

Checks computer location settings 2 TTPs 2 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-1-5-21-2037190880-819243489-950462038-1000\Control Panel\International\Geo\Nation	bbfed27c40fe643add2d5c29571bdf35373a5144ed46e02e5602f8b12336b6a5.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2037190880-819243489-950462038-1000\Control Panel\International\Geo\Nation	QQMicroGameBox.exe

Executes dropped EXE 2 IoCs

pid	Process
4756	QQMicroGameBox.exe
2576	QQMicroGameBox.exe

Loads dropped DLL 2 IoCs

pid	Process
4756	QQMicroGameBox.exe
2576	QQMicroGameBox.exe

Drops file in Program Files directory 6 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Application Verifier\QQMicroGameBox.exe	QQMicroGameBox.exe
File created	C:\Program Files (x86)\Application Verifier\cvsd.xml	bbfed27c40fe643add2d5c29571bdf35373a5144ed46e02e5602f8b12336b6a5.exe
File created	C:\Program Files (x86)\Application Verifier\afd.bin	bbfed27c40fe643add2d5c29571bdf35373a5144ed46e02e5602f8b12336b6a5.exe
File created	C:\Program Files (x86)\Application Verifier\fufu.bin	bbfed27c40fe643add2d5c29571bdf35373a5144ed46e02e5602f8b12336b6a5.exe
File created	C:\Program Files (x86)\Application Verifier\QQMicroGameBox.exe	bbfed27c40fe643add2d5c29571bdf35373a5144ed46e02e5602f8b12336b6a5.exe
File created	C:\Program Files (x86)\Application Verifier\sentry.dll	bbfed27c40fe643add2d5c29571bdf35373a5144ed46e02e5602f8b12336b6a5.exe

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

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
912	2576	WerFault.exe	90

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4544	bbfed27c40fe643add2d5c29571bdf35373a5144ed46e02e5602f8b12336b6a5.exe
4544	bbfed27c40fe643add2d5c29571bdf35373a5144ed46e02e5602f8b12336b6a5.exe
4544	bbfed27c40fe643add2d5c29571bdf35373a5144ed46e02e5602f8b12336b6a5.exe
4544	bbfed27c40fe643add2d5c29571bdf35373a5144ed46e02e5602f8b12336b6a5.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4756	QQMicroGameBox.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4544	bbfed27c40fe643add2d5c29571bdf35373a5144ed46e02e5602f8b12336b6a5.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4544 wrote to memory of 4756	4544	bbfed27c40fe643add2d5c29571bdf35373a5144ed46e02e5602f8b12336b6a5.exe	88
PID 4544 wrote to memory of 4756	4544	bbfed27c40fe643add2d5c29571bdf35373a5144ed46e02e5602f8b12336b6a5.exe	88
PID 4544 wrote to memory of 4756	4544	bbfed27c40fe643add2d5c29571bdf35373a5144ed46e02e5602f8b12336b6a5.exe	88
PID 4756 wrote to memory of 2576	4756	QQMicroGameBox.exe	90
PID 4756 wrote to memory of 2576	4756	QQMicroGameBox.exe	90
PID 4756 wrote to memory of 2576	4756	QQMicroGameBox.exe	90

C:\Users\Admin\AppData\Local\Temp\bbfed27c40fe643add2d5c29571bdf35373a5144ed46e02e5602f8b12336b6a5.exe
"C:\Users\Admin\AppData\Local\Temp\bbfed27c40fe643add2d5c29571bdf35373a5144ed46e02e5602f8b12336b6a5.exe"
1⤵
- Checks computer location settings
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4544
- C:\Program Files (x86)\Application Verifier\QQMicroGameBox.exe
  "C:\Program Files (x86)\Application Verifier\QQMicroGameBox.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in Program Files directory
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4756
- - C:\Users\Admin\AppData\Local\QQMicroGameBox.exe
    "C:\Users\Admin\AppData\Local\QQMicroGameBox.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    PID:2576
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2576 -s 500
      4⤵
      Program crash
      PID:912

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 2576 -ip 2576
1⤵
PID:2256

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)\Application Verifier\QQMicroGameBox.exe

Filesize
1.9MB

MD5
7f8f210a6f11a1e556b8dd7bb26e2e7d

SHA1
49a1e7d58e43cc5e177de7857b8fa9c8a6f6d1c1

SHA256
c7109e87b0d20b842816f055a8714f0eebccfa99a031e6b7a472397736329af7

SHA512
1c414aa37879bed96a82a1d14658e58da6d085cd0a6d523a65780c9dc585d78afa99eefc64dc5d9961702dc5fdd8b647f9475eed25ef67287de01f82962921a7

Download Submit
C:\Program Files (x86)\Application Verifier\QQMicroGameBox.exe

Filesize
1.9MB

MD5
7f8f210a6f11a1e556b8dd7bb26e2e7d

SHA1
49a1e7d58e43cc5e177de7857b8fa9c8a6f6d1c1

SHA256
c7109e87b0d20b842816f055a8714f0eebccfa99a031e6b7a472397736329af7

SHA512
1c414aa37879bed96a82a1d14658e58da6d085cd0a6d523a65780c9dc585d78afa99eefc64dc5d9961702dc5fdd8b647f9475eed25ef67287de01f82962921a7

Download Submit
C:\Program Files (x86)\Application Verifier\QQMicroGameBox.exe

Filesize
1.9MB

MD5
7f8f210a6f11a1e556b8dd7bb26e2e7d

SHA1
49a1e7d58e43cc5e177de7857b8fa9c8a6f6d1c1

SHA256
c7109e87b0d20b842816f055a8714f0eebccfa99a031e6b7a472397736329af7

SHA512
1c414aa37879bed96a82a1d14658e58da6d085cd0a6d523a65780c9dc585d78afa99eefc64dc5d9961702dc5fdd8b647f9475eed25ef67287de01f82962921a7

Download Submit
C:\Program Files (x86)\Application Verifier\afd.bin

Filesize
198KB

MD5
8d7b75e76767e7d80ba2d7c5f012cd53

SHA1
a3b2f2dabc3ddd47d9c53b74202358136b23d2f9

SHA256
4afd5abe32b72232a25e44c88f5af96f182c9ce8d06f3aa44970e5366989af43

SHA512
d964016717b7fc4a9f443de9c85ec507d6c823b7616d8b51f31e5cacf992fd3519c170ea2cf14a88f0b3b17670871637a679807bf11f990d5e26eb00335feeb0

Download Submit
C:\Program Files (x86)\Application Verifier\sentry.dll

Filesize
84KB

MD5
1d78cc969d6d164f7c9c6605214f7f10

SHA1
ab8a49fb4905bdd492671958a957b15060706daa

SHA256
befef93e2df09e4bcad8518f8611bb615ef004bc0fabc4899e6e767184708cc6

SHA512
a6d9f25d22cdf61d8f985bb219a4fcb14fe65de9ac0483cc74b7abbab537e2ca08b030714d1de2ef05da8fe4db41838adfc2c00aad4b671fd2c8a30c53865b69

Download Submit
C:\Program Files (x86)\Application Verifier\sentry.dll

Filesize
84KB

MD5
1d78cc969d6d164f7c9c6605214f7f10

SHA1
ab8a49fb4905bdd492671958a957b15060706daa

SHA256
befef93e2df09e4bcad8518f8611bb615ef004bc0fabc4899e6e767184708cc6

SHA512
a6d9f25d22cdf61d8f985bb219a4fcb14fe65de9ac0483cc74b7abbab537e2ca08b030714d1de2ef05da8fe4db41838adfc2c00aad4b671fd2c8a30c53865b69

Download Submit
C:\Program Files (x86)\Application Verifier\sentry.dll

Filesize
84KB

MD5
1d78cc969d6d164f7c9c6605214f7f10

SHA1
ab8a49fb4905bdd492671958a957b15060706daa

SHA256
befef93e2df09e4bcad8518f8611bb615ef004bc0fabc4899e6e767184708cc6

SHA512
a6d9f25d22cdf61d8f985bb219a4fcb14fe65de9ac0483cc74b7abbab537e2ca08b030714d1de2ef05da8fe4db41838adfc2c00aad4b671fd2c8a30c53865b69

Download Submit
C:\Users\Admin\AppData\Local\QQMicroGameBox.exe

Filesize
1.9MB

MD5
7f8f210a6f11a1e556b8dd7bb26e2e7d

SHA1
49a1e7d58e43cc5e177de7857b8fa9c8a6f6d1c1

SHA256
c7109e87b0d20b842816f055a8714f0eebccfa99a031e6b7a472397736329af7

SHA512
1c414aa37879bed96a82a1d14658e58da6d085cd0a6d523a65780c9dc585d78afa99eefc64dc5d9961702dc5fdd8b647f9475eed25ef67287de01f82962921a7

Download Submit
memory/2576-48-0x0000000001430000-0x0000000001494000-memory.dmp

Filesize
400KB

Download
memory/4544-7-0x0000000010000000-0x0000000010022000-memory.dmp

Filesize
136KB

Download
memory/4544-12-0x0000000003350000-0x000000000336E000-memory.dmp

Filesize
120KB

Download
memory/4756-25-0x0000000010000000-0x0000000010031000-memory.dmp

Filesize
196KB

Download
memory/4756-26-0x0000000003DA0000-0x0000000003E04000-memory.dmp

Filesize
400KB

Download
memory/4756-30-0x0000000002750000-0x000000000277A000-memory.dmp

Filesize
168KB

Download

Analysis

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