bruteratel | 877a05167bae650393d1261bb4f027234e544d6dff1caf927cc2cf2aedab08e5

Analysis

max time kernel
106s
max time network
132s
platform
windows10-2004_x64
resource
win10v2004-20250217-en
resource tags

arch:x64arch:x86image:win10v2004-20250217-enlocale:en-usos:windows10-2004-x64system
submitted
23-02-2025 00:22

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General

Target

JaffaCakes118_1d39a9c2ff02fe858c1d8074b9e13770.exe
Size

88KB
MD5

1d39a9c2ff02fe858c1d8074b9e13770
SHA1

4649b843a013fadd8c9a6e5309879413a6b8a23a
SHA256

877a05167bae650393d1261bb4f027234e544d6dff1caf927cc2cf2aedab08e5
SHA512

3fba24a4bed96f1e5ece7e8b489ddfa8dd7a86894e9821b8e9ea7249f742afc8be7ca56e6279fb9d1baef8c5e55db260466213162b1f953c249cf1eca5e19812
SSDEEP

1536:esrHFJekIsOnOCaRIj0oCudDF9DXQIdgikEH7m0:BLFJekX2jaRU0/IDFNQIdgrI

Score

10^/10

bruteratel backdoor discovery upx

Malware Config

Signatures

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

Detect BruteRatel badger 1 IoCs

resource	yara_rule
behavioral2/memory/3992-0-0x0000000000570000-0x000000000057D000-memory.dmp	family_bruteratel

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-1-5-21-250031470-1197856012-2659781506-1000\Control Panel\International\Geo\Nation	JaffaCakes118_1d39a9c2ff02fe858c1d8074b9e13770.exe

UPX packed file 2 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/3992-1-0x0000000000400000-0x0000000000425000-memory.dmp	upx
behavioral2/memory/3992-3-0x0000000000400000-0x0000000000425000-memory.dmp	upx

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_1d39a9c2ff02fe858c1d8074b9e13770.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3992	JaffaCakes118_1d39a9c2ff02fe858c1d8074b9e13770.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3992 wrote to memory of 968	3992	JaffaCakes118_1d39a9c2ff02fe858c1d8074b9e13770.exe	86
PID 3992 wrote to memory of 968	3992	JaffaCakes118_1d39a9c2ff02fe858c1d8074b9e13770.exe	86
PID 3992 wrote to memory of 968	3992	JaffaCakes118_1d39a9c2ff02fe858c1d8074b9e13770.exe	86

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1d39a9c2ff02fe858c1d8074b9e13770.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1d39a9c2ff02fe858c1d8074b9e13770.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:3992
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /q /c "C:\Users\Admin\AppData\Local\Temp\Fcv..bat" > nul 2> nul
  2⤵
  - System Location Discovery: System Language Discovery
  PID:968

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\Fcv..bat

Filesize
238B

MD5
9c6d2c72d0154d8aae43431b2154d438

SHA1
e5248d87ae6edb1f3acba328006c01b987e6eb93

SHA256
a322c2b173af9bdc6cb92ed802455d09225b6c6beac6d7a5bde22ee9cb355300

SHA512
229c19a6d091e2d5da61630671ad2fdc1ca9677e9eda92efccc9f43ecfa1965f729c50ebad1aaadfd029e21ed33edfd4c6ea71db62a22360f740ebf4460fcd98

Download Submit
memory/3992-0-0x0000000000570000-0x000000000057D000-memory.dmp

Filesize
52KB

Download
memory/3992-1-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/3992-3-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download