bruteratel | 04c031ecbff301c0c7c55c8c9352dea457370b221c314710e2e94575b8caf45b

Resubmissions

15-03-2024 08:35

240315-khfr5scb41 10

08-03-2024 06:28

240308-g8rqjsac9y 10

Analysis

max time kernel
143s
max time network
124s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
15-03-2024 08:35

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General

Target

bac03e7065835ff2e82f01801740a5e0.exe
Size

1.3MB
MD5

bac03e7065835ff2e82f01801740a5e0
SHA1

2bf512bc4f3d6f1bece40073ddedadad65264166
SHA256

04c031ecbff301c0c7c55c8c9352dea457370b221c314710e2e94575b8caf45b
SHA512

a2ee185a51f1ee7d53a622013ccb9f47c9893f304dce3413d53399ad3d757ed0dd7782f8dbe3f60c8f19c9f69fd40fc8fbb3b59aa09279871a3ee50878f50d97
SSDEEP

24576:r4VrnNUc9BJxetHXQf/R4GdfEzh7B905zfXKkfz+bVILjMxuY:cFNlYXI/R4GduL05zfXdfgVILY1

Score

10^/10

bruteratel backdoor

Malware Config

Signatures

Brute Ratel C4
A customized command and control framework for red teaming and adversary simulation.
backdoor bruteratel

Executes dropped EXE 1 IoCs

pid	Process
3028	acrobat32.exe

Loads dropped DLL 1 IoCs

pid	Process
2352	bac03e7065835ff2e82f01801740a5e0.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\WINDOWS\SYSTEM.LOG	acrobat32.exe

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

System Information Discovery
T1082

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3028	acrobat32.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2352 wrote to memory of 3028	2352	bac03e7065835ff2e82f01801740a5e0.exe	28
PID 2352 wrote to memory of 3028	2352	bac03e7065835ff2e82f01801740a5e0.exe	28
PID 2352 wrote to memory of 3028	2352	bac03e7065835ff2e82f01801740a5e0.exe	28
PID 2352 wrote to memory of 3028	2352	bac03e7065835ff2e82f01801740a5e0.exe	28

C:\Users\Admin\AppData\Local\Temp\bac03e7065835ff2e82f01801740a5e0.exe
"C:\Users\Admin\AppData\Local\Temp\bac03e7065835ff2e82f01801740a5e0.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2352
- C:\Arquivos de programas\acrobat32.exe
  "C:\Arquivos de programas\acrobat32.exe"
  2⤵
  - Executes dropped EXE
  - Drops file in Windows directory
  - Suspicious behavior: GetForegroundWindowSpam
  PID:3028

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Arquivos de programas\acrobat32.exe

Filesize
1.0MB

MD5
b016367766316c566ff004b085415f64

SHA1
28e8b27eb17030b5918ed45e35b0809d42feebb7

SHA256
c24ee3a9031c2a2539c64e1b10468641125ab242c8d052166728d286cea88a39

SHA512
e54d85eb521b2405e22e763fa7813ad83a08156cf6917e17863c744342b482f304fc87167e86a8b3a4e4b3ebfbdb87445add889a8b5c5c12fb69f7fb9d26c64a

Download Submit
\Arquivos de programas\acrobat32.exe

Filesize
1024KB

MD5
eb26913bed3a1069dcdb79ecb5ad90a4

SHA1
ec28e8e8b646f60ad912f7bb2addb368546c775a

SHA256
87f177faa0fcad31f26fc8f9aa71b7351e56cff26916c989ced1144105d17e87

SHA512
d9624e1ca4ead67c00786fd9ddde36c1c50fb055ec963f4bbb7fd593c914104d9fd7f880bd459e9c97ef513f73aae3e774c27ef8641f9ca6e2465f57b8cae831

Download Submit
memory/2352-8-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/3028-7-0x0000000000230000-0x0000000000231000-memory.dmp

Filesize
4KB

Download
memory/3028-9-0x0000000000280000-0x0000000001532000-memory.dmp

Filesize
18.7MB

Download
memory/3028-11-0x0000000000230000-0x0000000000231000-memory.dmp

Filesize
4KB

Download
memory/3028-12-0x0000000000280000-0x0000000001532000-memory.dmp

Filesize
18.7MB

Download