xloader | c8d5f3e6a3e8652eeb94d0fc8c214bef10f0e2557ffe655ff1e3684edd565221

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 2 IoCs

rat

resource	yara_rule
behavioral3/memory/2524-1-0x0000000000400000-0x0000000000429000-memory.dmp	xloader
behavioral3/memory/2788-8-0x00000000000C0000-0x00000000000E9000-memory.dmp	xloader

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 3052 set thread context of 2524	3052	rundll32.exe	31
PID 2524 set thread context of 1284	2524	rundll32.exe	21
PID 2788 set thread context of 1284	2788	ipconfig.exe	21

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	ipconfig.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.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
2788	ipconfig.exe

Suspicious behavior: EnumeratesProcesses 31 IoCs

pid	Process
2524	rundll32.exe
2524	rundll32.exe
2788	ipconfig.exe
2788	ipconfig.exe
2788	ipconfig.exe
2788	ipconfig.exe
2788	ipconfig.exe
2788	ipconfig.exe
2788	ipconfig.exe
2788	ipconfig.exe
2788	ipconfig.exe
2788	ipconfig.exe
2788	ipconfig.exe
2788	ipconfig.exe
2788	ipconfig.exe
2788	ipconfig.exe
2788	ipconfig.exe
2788	ipconfig.exe
2788	ipconfig.exe
2788	ipconfig.exe
2788	ipconfig.exe
2788	ipconfig.exe
2788	ipconfig.exe
2788	ipconfig.exe
2788	ipconfig.exe
2788	ipconfig.exe
2788	ipconfig.exe
2788	ipconfig.exe
2788	ipconfig.exe
2788	ipconfig.exe
2788	ipconfig.exe

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
3052	rundll32.exe
2524	rundll32.exe
2524	rundll32.exe
2524	rundll32.exe
2788	ipconfig.exe
2788	ipconfig.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2524	rundll32.exe
Token: SeDebugPrivilege	2788	ipconfig.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2780 wrote to memory of 3052	2780	rundll32.exe	30
PID 2780 wrote to memory of 3052	2780	rundll32.exe	30
PID 2780 wrote to memory of 3052	2780	rundll32.exe	30
PID 2780 wrote to memory of 3052	2780	rundll32.exe	30
PID 2780 wrote to memory of 3052	2780	rundll32.exe	30
PID 2780 wrote to memory of 3052	2780	rundll32.exe	30
PID 2780 wrote to memory of 3052	2780	rundll32.exe	30
PID 3052 wrote to memory of 2524	3052	rundll32.exe	31
PID 3052 wrote to memory of 2524	3052	rundll32.exe	31
PID 3052 wrote to memory of 2524	3052	rundll32.exe	31
PID 3052 wrote to memory of 2524	3052	rundll32.exe	31
PID 3052 wrote to memory of 2524	3052	rundll32.exe	31
PID 3052 wrote to memory of 2524	3052	rundll32.exe	31
PID 3052 wrote to memory of 2524	3052	rundll32.exe	31
PID 3052 wrote to memory of 2524	3052	rundll32.exe	31
PID 1284 wrote to memory of 2788	1284	Explorer.EXE	32
PID 1284 wrote to memory of 2788	1284	Explorer.EXE	32
PID 1284 wrote to memory of 2788	1284	Explorer.EXE	32
PID 1284 wrote to memory of 2788	1284	Explorer.EXE	32
PID 2788 wrote to memory of 2968	2788	ipconfig.exe	33
PID 2788 wrote to memory of 2968	2788	ipconfig.exe	33
PID 2788 wrote to memory of 2968	2788	ipconfig.exe	33
PID 2788 wrote to memory of 2968	2788	ipconfig.exe	33

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1284
- C:\Windows\system32\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\gbywalds.dll,#1
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2780
- - 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:3052
  - - 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:2524
- C:\Windows\SysWOW64\ipconfig.exe
  "C:\Windows\SysWOW64\ipconfig.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:2788
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Windows\SysWOW64\rundll32.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2968

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1284-4-0x0000000007B80000-0x0000000007D1E000-memory.dmp

Filesize
1.6MB

Download
memory/1284-9-0x0000000007B80000-0x0000000007D1E000-memory.dmp

Filesize
1.6MB

Download
memory/2524-1-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/2524-2-0x0000000074F00000-0x0000000074F51000-memory.dmp

Filesize
324KB

Download
memory/2524-6-0x0000000074F00000-0x0000000074F51000-memory.dmp

Filesize
324KB

Download
memory/2788-5-0x0000000000D00000-0x0000000000D0A000-memory.dmp

Filesize
40KB

Download
memory/2788-7-0x0000000000D00000-0x0000000000D0A000-memory.dmp

Filesize
40KB

Download
memory/2788-8-0x00000000000C0000-0x00000000000E9000-memory.dmp

Filesize
164KB

Download
memory/3052-0-0x0000000074F13000-0x0000000074F15000-memory.dmp

Filesize
8KB

Download

Analysis

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