c13a0cd7c2c2fd577703bff026b72ed81b51266afa047328c8ff1c4a4d965c97

Analysis

max time kernel
41s
max time network
44s
platform
windows11-21h2_x64
resource
win11-20241007-en
resource tags

arch:x64arch:x86image:win11-20241007-enlocale:en-usos:windows11-21h2-x64system
submitted
15-11-2024 17:20

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

builder.exe
Size

10KB
MD5

4f04f0e1ff050abf6f1696be1e8bb039
SHA1

bebf3088fff4595bfb53aea6af11741946bbd9ce
SHA256

ded51c306ee7e59fa15c42798c80f988f6310ea77ab77de3d12dc01233757cfa
SHA512

94713824b81de323e368fde18679ef8b8f2883378bffd2b7bd2b4e4bd5d48b35c6e71c9f8e9b058ba497db1bd0781807e5b7cecfd540dad611da0986c72b9f12
SSDEEP

96:IJXYAuB2glBLgyOk3LxdjP2rm549JSTuwUYXzP+B1izXTa/HFpff3LG+tzNt:IJXDk7LI4uwtDPC1ijCHffSs

Score

3^/10

discovery

Malware Config

Signatures

System Location Discovery: System Language Discovery 1 TTPs 1 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

Processes:

builder.exe

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

Modifies registry class 4 IoCs

Processes:

BackgroundTransferHost.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-4249425805-3408538557-1766626484-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\microsoftwindows.client.cbs_cw5n1h2txyewy\Internet Settings\Cache\Content\CachePrefix	BackgroundTransferHost.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4249425805-3408538557-1766626484-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\microsoftwindows.client.cbs_cw5n1h2txyewy\Internet Settings\Cache\Cookies\CachePrefix = "Cookie:"	BackgroundTransferHost.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4249425805-3408538557-1766626484-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\microsoftwindows.client.cbs_cw5n1h2txyewy\Internet Settings\Cache\History\CachePrefix = "Visited:"	BackgroundTransferHost.exe
Key created	\REGISTRY\USER\S-1-5-21-4249425805-3408538557-1766626484-1000_Classes\Local Settings\MuiCache	BackgroundTransferHost.exe

C:\Users\Admin\AppData\Local\Temp\builder.exe
"C:\Users\Admin\AppData\Local\Temp\builder.exe"
1⤵
- System Location Discovery: System Language Discovery
PID:4216

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
1⤵
PID:4892

C:\Windows\system32\BackgroundTransferHost.exe
"BackgroundTransferHost.exe" -ServerName:BackgroundTransferHost.13
1⤵
- Modifies registry class
PID:4000

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Packages\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\AC\BackgroundTransferApi\7373f33a-817d-497b-8a0a-2056ca27daa9.down_data

Filesize
555KB

MD5
5683c0028832cae4ef93ca39c8ac5029

SHA1
248755e4e1db552e0b6f8651b04ca6d1b31a86fb

SHA256
855abd360d8a8d6974eba92b70cbd09ce519bc8773439993f9ab37cb6847309e

SHA512
aba434bd29be191c823b02ea9b639beb10647bbe7759bbffdaa790dfb1ec2c58d74c525ef11aacda209e4effe322d1d3a07b115446c8914b07a3bce4d8a0e2c3

Download Submit
memory/4216-0-0x0000000074E2E000-0x0000000074E2F000-memory.dmp

Filesize
4KB

Download
memory/4216-1-0x0000000000770000-0x0000000000778000-memory.dmp

Filesize
32KB

Download
memory/4216-2-0x00000000058F0000-0x0000000005E96000-memory.dmp

Filesize
5.6MB

Download
memory/4216-3-0x0000000005290000-0x0000000005322000-memory.dmp

Filesize
584KB

Download
memory/4216-4-0x0000000005220000-0x000000000522A000-memory.dmp

Filesize
40KB

Download
memory/4216-5-0x0000000074E20000-0x00000000755D1000-memory.dmp

Filesize
7.7MB

Download
memory/4216-6-0x0000000074E2E000-0x0000000074E2F000-memory.dmp

Filesize
4KB

Download
memory/4216-7-0x0000000074E20000-0x00000000755D1000-memory.dmp

Filesize
7.7MB

Download
memory/4216-8-0x00000000066B0000-0x00000000067D2000-memory.dmp

Filesize
1.1MB

Download
memory/4216-11-0x0000000074E20000-0x00000000755D1000-memory.dmp

Filesize
7.7MB

Download