xloader | c866bebd7ff21337ee973db5078bc7635170f994a7d6c9520a88f8313e4cbd0e

Analysis

max time kernel
117s
max time network
118s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
21-11-2024 20:25

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General

Target

$PLUGINSDIR/yeorkzn.dll
Size

134KB
MD5

de4cd82a7d5710c0920e65426ca69cdc
SHA1

f6f2644a63dfaca5e87d72f9b5bbabb88ac4b716
SHA256

7f9b3f353d52281a4c811baf32c963950139aaac91c34dd02da510eb8fcdf330
SHA512

e4b8941eaaf2d4260fc3ea7aa84196d473b6e6ebff3e253bfe1c899f3f97803d98554abf52af85c84a6278e58f06573726a0f80ede272dd6eb38c8de4bee1bbf
SSDEEP

1536:riqBVCUCN7r8Aysu0NFwofM5uyBjFwla41chyVbbkyskbdFtKlrVyi95+6Lwca/j:ri/7r8AFNjE0GQchyt5EFIAZN

Score

10^/10

xloader b4t9 discovery loader rat

Malware Config

Extracted

Family

xloader

Version

2.5

Campaign

b4t9

Decoy

grannyh.com

spacexevent.online

hukuimaru.com

28685dw.com

butuns.com

tobiasqbrown.com

phrecruiters.com

comparativeliterature.info

cncfpro.com

kmcoti.com

jjcward.xyz

deadpangomtnu.xyz

hbbforyou.com

urbanvelites.com

neatsea.net

reyuzed.com

desenhandomagias.com

ecoecor.com

purusbontanics.com

deltavariant.tech

Signatures

Xloader
Xloader is a rebranded version of Formbook malware.
loader xloader
Xloader family
xloader

Xloader payload 1 IoCs

rat

resource	yara_rule
behavioral3/memory/2544-2-0x0000000000400000-0x0000000000429000-memory.dmp	xloader

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2536 set thread context of 2544	2536	rundll32.exe	32

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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 1956 wrote to memory of 2536	1956	rundll32.exe	31
PID 1956 wrote to memory of 2536	1956	rundll32.exe	31
PID 1956 wrote to memory of 2536	1956	rundll32.exe	31
PID 1956 wrote to memory of 2536	1956	rundll32.exe	31
PID 1956 wrote to memory of 2536	1956	rundll32.exe	31
PID 1956 wrote to memory of 2536	1956	rundll32.exe	31
PID 1956 wrote to memory of 2536	1956	rundll32.exe	31
PID 2536 wrote to memory of 2544	2536	rundll32.exe	32
PID 2536 wrote to memory of 2544	2536	rundll32.exe	32
PID 2536 wrote to memory of 2544	2536	rundll32.exe	32
PID 2536 wrote to memory of 2544	2536	rundll32.exe	32
PID 2536 wrote to memory of 2544	2536	rundll32.exe	32
PID 2536 wrote to memory of 2544	2536	rundll32.exe	32
PID 2536 wrote to memory of 2544	2536	rundll32.exe	32
PID 2536 wrote to memory of 2544	2536	rundll32.exe	32
PID 2536 wrote to memory of 2544	2536	rundll32.exe	32
PID 2536 wrote to memory of 2544	2536	rundll32.exe	32

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\yeorkzn.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1956
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\yeorkzn.dll,#1
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2536
- - C:\Windows\SysWOW64\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\yeorkzn.dll,#1
    3⤵
    PID:2544

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

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Downloads

memory/2536-0-0x0000000010000000-0x0000000010026000-memory.dmp

Filesize
152KB

Download
memory/2536-1-0x0000000010000000-0x0000000010026000-memory.dmp

Filesize
152KB

Download
memory/2536-5-0x0000000010000000-0x0000000010026000-memory.dmp

Filesize
152KB

Download
memory/2544-2-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download