xloader | 436ad6516dcb3802e9e18ea7a039a86f56ee3fdd18bec695222beb6ad625fd75

General

Target

vbc.exe
Size

404KB
MD5

cf82630b65d8e29c59fd6254c1bb8df3
SHA1

023d37e9bf3a4f0af07e23db3630fb023902d9aa
SHA256

1ccf632888b773e7116eb3a4ade6017f064b5c98f71424e5c1cc8b4bcbe181ef
SHA512

095f653f4ba57019e781ff6b065a76c193c1987c94ab9dbfb24014f45a3cb06d3cafde51623002ba0c1a920f007ca26129fc7437db3777b74ac14d9f39ddc9ea
SSDEEP

12288:m1hpgPSDfOvZXBo1zMrLRQVjvf00t3/34s3ujfkXX:m17gwz6ob3P34aujI

Score

10^/10

xloader scb0 discovery loader rat

Malware Config

Extracted

Family

xloader

Version

2.5

Campaign

scb0

Decoy

introlly.com

slowtravelco.com

sasanos.com

3424soldbastrophwy.com

isabelaefernando.net

0754fm.com

meta-bot.xyz

778tt8.com

krallechols.quest

lipagent.com

dermaqueeniran.com

psychoterapeuta-wroclaw.com

marmorariapiramide.online

luxonealbery.com

floridawp.com

nebobuild.com

facillitiespro-sweep.com

wwgzj.com

puffsmoke.online

cryptofuelcars.com

Signatures

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

Xloader payload 3 IoCs

rat

resource	yara_rule
behavioral2/memory/4736-11-0x0000000000400000-0x0000000000429000-memory.dmp	xloader
behavioral2/memory/4736-16-0x0000000000400000-0x0000000000429000-memory.dmp	xloader
behavioral2/memory/3668-22-0x0000000000EC0000-0x0000000000EE9000-memory.dmp	xloader

Uses the VBS compiler for execution 1 TTPs

Command and Scripting Interpreter
T1059

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 3680 set thread context of 4736	3680	vbc.exe	91
PID 4736 set thread context of 3452	4736	vbc.exe	56
PID 3668 set thread context of 3452	3668	svchost.exe	56

System Location Discovery: System Language Discovery 1 TTPs 3 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	vbc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious behavior: EnumeratesProcesses 44 IoCs

pid	Process
4736	vbc.exe
4736	vbc.exe
4736	vbc.exe
4736	vbc.exe
3668	svchost.exe
3668	svchost.exe
3668	svchost.exe
3668	svchost.exe
3668	svchost.exe
3668	svchost.exe
3668	svchost.exe
3668	svchost.exe
3668	svchost.exe
3668	svchost.exe
3668	svchost.exe
3668	svchost.exe
3668	svchost.exe
3668	svchost.exe
3668	svchost.exe
3668	svchost.exe
3668	svchost.exe
3668	svchost.exe
3668	svchost.exe
3668	svchost.exe
3668	svchost.exe
3668	svchost.exe
3668	svchost.exe
3668	svchost.exe
3668	svchost.exe
3668	svchost.exe
3668	svchost.exe
3668	svchost.exe
3668	svchost.exe
3668	svchost.exe
3668	svchost.exe
3668	svchost.exe
3668	svchost.exe
3668	svchost.exe
3668	svchost.exe
3668	svchost.exe
3668	svchost.exe
3668	svchost.exe
3668	svchost.exe
3668	svchost.exe

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
4736	vbc.exe
4736	vbc.exe
4736	vbc.exe
3668	svchost.exe
3668	svchost.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4736	vbc.exe
Token: SeDebugPrivilege	3668	svchost.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 3680 wrote to memory of 4736	3680	vbc.exe	91
PID 3680 wrote to memory of 4736	3680	vbc.exe	91
PID 3680 wrote to memory of 4736	3680	vbc.exe	91
PID 3680 wrote to memory of 4736	3680	vbc.exe	91
PID 3680 wrote to memory of 4736	3680	vbc.exe	91
PID 3680 wrote to memory of 4736	3680	vbc.exe	91
PID 3452 wrote to memory of 3668	3452	Explorer.EXE	92
PID 3452 wrote to memory of 3668	3452	Explorer.EXE	92
PID 3452 wrote to memory of 3668	3452	Explorer.EXE	92
PID 3668 wrote to memory of 3628	3668	svchost.exe	93
PID 3668 wrote to memory of 3628	3668	svchost.exe	93
PID 3668 wrote to memory of 3628	3668	svchost.exe	93

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:3452
- C:\Users\Admin\AppData\Local\Temp\vbc.exe
  "C:\Users\Admin\AppData\Local\Temp\vbc.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3680
- - C:\Users\Admin\AppData\Local\Temp\vbc.exe
    "C:\Users\Admin\AppData\Local\Temp\vbc.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:4736
- C:\Windows\SysWOW64\svchost.exe
  "C:\Windows\SysWOW64\svchost.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3668
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\vbc.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:3628

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 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/3452-18-0x0000000008590000-0x00000000086D5000-memory.dmp

Filesize
1.3MB

Download
memory/3452-28-0x0000000008870000-0x00000000089F7000-memory.dmp

Filesize
1.5MB

Download
memory/3452-27-0x0000000008870000-0x00000000089F7000-memory.dmp

Filesize
1.5MB

Download
memory/3452-23-0x0000000008590000-0x00000000086D5000-memory.dmp

Filesize
1.3MB

Download
memory/3668-22-0x0000000000EC0000-0x0000000000EE9000-memory.dmp

Filesize
164KB

Download
memory/3668-19-0x0000000000E70000-0x0000000000E7E000-memory.dmp

Filesize
56KB

Download
memory/3668-21-0x0000000000E70000-0x0000000000E7E000-memory.dmp

Filesize
56KB

Download
memory/3680-10-0x00000000054B0000-0x00000000054E0000-memory.dmp

Filesize
192KB

Download
memory/3680-4-0x0000000004B20000-0x0000000004B2C000-memory.dmp

Filesize
48KB

Download
memory/3680-9-0x0000000005A00000-0x0000000005FA4000-memory.dmp

Filesize
5.6MB

Download
memory/3680-0-0x00000000749FE000-0x00000000749FF000-memory.dmp

Filesize
4KB

Download
memory/3680-8-0x00000000053F0000-0x0000000005452000-memory.dmp

Filesize
392KB

Download
memory/3680-13-0x00000000749F0000-0x00000000751A0000-memory.dmp

Filesize
7.7MB

Download
memory/3680-1-0x00000000000E0000-0x000000000014C000-memory.dmp

Filesize
432KB

Download
memory/3680-2-0x00000000749F0000-0x00000000751A0000-memory.dmp

Filesize
7.7MB

Download
memory/3680-3-0x0000000004D50000-0x0000000004DEC000-memory.dmp

Filesize
624KB

Download
memory/3680-7-0x00000000749F0000-0x00000000751A0000-memory.dmp

Filesize
7.7MB

Download
memory/3680-6-0x00000000749FE000-0x00000000749FF000-memory.dmp

Filesize
4KB

Download
memory/3680-5-0x0000000004DF0000-0x0000000004E82000-memory.dmp

Filesize
584KB

Download
memory/4736-11-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/4736-16-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/4736-17-0x0000000000D60000-0x0000000000D71000-memory.dmp

Filesize
68KB

Download
memory/4736-14-0x00000000010E0000-0x000000000142A000-memory.dmp

Filesize
3.3MB

Download

Analysis

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