xloader | c8d5f3e6a3e8652eeb94d0fc8c214bef10f0e2557ffe655ff1e3684edd565221

Analysis

max time kernel
150s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
21-11-2024 20:04

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General

Target

$PLUGINSDIR/gbywalds.dll
Size

12KB
MD5

5b7950419e981b94f2d78ba5f70b8f47
SHA1

007b19f9267c8634a7b4b488770ae1f667655c20
SHA256

6e11a5bb985683f9d03865289565124c11ce2c481a9a505866602cc950c80f5e
SHA512

03d2a63385fa404e3fec62b16af9baa3ae93c26250e3ab1b104b6bb42542a7690d182faa50c5f27e89d4a8d00306ba252a188df9109667ca964ba80640882e65
SSDEEP

192:KBGz5UZNGzZmzQnR4XrQiE+BZ2jrEQN/MOm6yD4yht/8RR0A:aGnmzsaZEpfj9nyD4su

Score

10^/10

xloader oqxs discovery loader rat

Malware Config

Extracted

Family

xloader

Version

2.3

Campaign

oqxs

Decoy

northkoreamatrimony.com

we11studio.net

ekviraonewaycab.com

biakbiak.com

pdmclinic.com

biophots.com

shaydd.com

uplandpro.com

newcrestredchrisltd.com

aventuragaming.com

righteousrewards.com

pengwinz.com

ganey-hn.com

gz-bbe.com

xicauyb.com

historyfive.com

racofix.net

teetimeforyou.com

perfumeriadeverano.com

electrumkeys.works

Signatures

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

Xloader payload 3 IoCs

rat

resource	yara_rule
behavioral4/memory/4800-1-0x0000000000400000-0x0000000000429000-memory.dmp	xloader
behavioral4/memory/4800-4-0x0000000000400000-0x0000000000429000-memory.dmp	xloader
behavioral4/memory/1252-10-0x00000000001D0000-0x00000000001F9000-memory.dmp	xloader

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 4840 set thread context of 4800	4840	rundll32.exe	85
PID 4800 set thread context of 3436	4800	rundll32.exe	56
PID 1252 set thread context of 3436	1252	NETSTAT.EXE	56

System Location Discovery: System Language Discovery 1 TTPs 4 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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	NETSTAT.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Gathers network information 2 TTPs 1 IoCs

Uses commandline utility to view network configuration.

System Information Discovery

T1082

Command and Scripting Interpreter

T1059

pid	Process
1252	NETSTAT.EXE

Suspicious behavior: EnumeratesProcesses 62 IoCs

pid	Process
4800	rundll32.exe
4800	rundll32.exe
4800	rundll32.exe
4800	rundll32.exe
1252	NETSTAT.EXE
1252	NETSTAT.EXE
1252	NETSTAT.EXE
1252	NETSTAT.EXE
1252	NETSTAT.EXE
1252	NETSTAT.EXE
1252	NETSTAT.EXE
1252	NETSTAT.EXE
1252	NETSTAT.EXE
1252	NETSTAT.EXE
1252	NETSTAT.EXE
1252	NETSTAT.EXE
1252	NETSTAT.EXE
1252	NETSTAT.EXE
1252	NETSTAT.EXE
1252	NETSTAT.EXE
1252	NETSTAT.EXE
1252	NETSTAT.EXE
1252	NETSTAT.EXE
1252	NETSTAT.EXE
1252	NETSTAT.EXE
1252	NETSTAT.EXE
1252	NETSTAT.EXE
1252	NETSTAT.EXE
1252	NETSTAT.EXE
1252	NETSTAT.EXE
1252	NETSTAT.EXE
1252	NETSTAT.EXE
1252	NETSTAT.EXE
1252	NETSTAT.EXE
1252	NETSTAT.EXE
1252	NETSTAT.EXE
1252	NETSTAT.EXE
1252	NETSTAT.EXE
1252	NETSTAT.EXE
1252	NETSTAT.EXE
1252	NETSTAT.EXE
1252	NETSTAT.EXE
1252	NETSTAT.EXE
1252	NETSTAT.EXE
1252	NETSTAT.EXE
1252	NETSTAT.EXE
1252	NETSTAT.EXE
1252	NETSTAT.EXE
1252	NETSTAT.EXE
1252	NETSTAT.EXE
1252	NETSTAT.EXE
1252	NETSTAT.EXE
1252	NETSTAT.EXE
1252	NETSTAT.EXE
1252	NETSTAT.EXE
1252	NETSTAT.EXE
1252	NETSTAT.EXE
1252	NETSTAT.EXE
1252	NETSTAT.EXE
1252	NETSTAT.EXE
1252	NETSTAT.EXE
1252	NETSTAT.EXE

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
4840	rundll32.exe
4800	rundll32.exe
4800	rundll32.exe
4800	rundll32.exe
1252	NETSTAT.EXE
1252	NETSTAT.EXE

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4800	rundll32.exe
Token: SeDebugPrivilege	1252	NETSTAT.EXE

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 3800 wrote to memory of 4840	3800	rundll32.exe	84
PID 3800 wrote to memory of 4840	3800	rundll32.exe	84
PID 3800 wrote to memory of 4840	3800	rundll32.exe	84
PID 4840 wrote to memory of 4800	4840	rundll32.exe	85
PID 4840 wrote to memory of 4800	4840	rundll32.exe	85
PID 4840 wrote to memory of 4800	4840	rundll32.exe	85
PID 4840 wrote to memory of 4800	4840	rundll32.exe	85
PID 3436 wrote to memory of 1252	3436	Explorer.EXE	86
PID 3436 wrote to memory of 1252	3436	Explorer.EXE	86
PID 3436 wrote to memory of 1252	3436	Explorer.EXE	86
PID 1252 wrote to memory of 2696	1252	NETSTAT.EXE	89
PID 1252 wrote to memory of 2696	1252	NETSTAT.EXE	89
PID 1252 wrote to memory of 2696	1252	NETSTAT.EXE	89

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:3436
- C:\Windows\system32\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\gbywalds.dll,#1
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3800
- - C:\Windows\SysWOW64\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\gbywalds.dll,#1
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of WriteProcessMemory
    PID:4840
  - - C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\gbywalds.dll,#1
      4⤵
      Suspicious use of SetThreadContext
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious behavior: MapViewOfSection
      Suspicious use of AdjustPrivilegeToken
      PID:4800
- C:\Windows\SysWOW64\NETSTAT.EXE
  "C:\Windows\SysWOW64\NETSTAT.EXE"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Gathers network information
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1252
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Windows\SysWOW64\rundll32.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2696

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

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/1252-7-0x0000000000710000-0x000000000071B000-memory.dmp

Filesize
44KB

Download
memory/1252-10-0x00000000001D0000-0x00000000001F9000-memory.dmp

Filesize
164KB

Download
memory/1252-9-0x0000000000710000-0x000000000071B000-memory.dmp

Filesize
44KB

Download
memory/3436-11-0x0000000002C20000-0x0000000002D2C000-memory.dmp

Filesize
1.0MB

Download
memory/3436-6-0x0000000002C20000-0x0000000002D2C000-memory.dmp

Filesize
1.0MB

Download
memory/3436-13-0x0000000008860000-0x0000000008986000-memory.dmp

Filesize
1.1MB

Download
memory/3436-14-0x0000000008860000-0x0000000008986000-memory.dmp

Filesize
1.1MB

Download
memory/3436-16-0x0000000008860000-0x0000000008986000-memory.dmp

Filesize
1.1MB

Download
memory/4800-4-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/4800-5-0x0000000003040000-0x0000000003050000-memory.dmp

Filesize
64KB

Download
memory/4800-2-0x0000000003090000-0x00000000033DA000-memory.dmp

Filesize
3.3MB

Download
memory/4800-1-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/4840-0-0x0000000074A43000-0x0000000074A45000-memory.dmp

Filesize
8KB

Download