xloader | bc0103a796d8d1052160e0375c7fdd65ebe7ca6a82a1ced95ed89fb5b728f7bf

General

Target

vbc.exe
Size

713KB
MD5

6dd65cf5c7523aff3f622e3ab7142f91
SHA1

e3ea22daf35fe994b0612550cfdf8009c2fee3e2
SHA256

3b49fb8bc04b8446394c1fd905fa6ee17155a5d34284a509765bca640cbbd37a
SHA512

c2d425c8e557504dadfda829fef525d0f2f6e150cbad95d6e40b0d20765d78e6ea4c114522b498effb006dc766645ba3fc82ff2b2c881807da0a497d81c0e91b
SSDEEP

12288:LGUUogb8YUPJh3b+vz+TA39U5LiiHdmEorzEKMK:L5UoVPJhFAtUtrdor4K

Score

10^/10

xloader 24ng discovery loader rat

Malware Config

Extracted

Family

xloader

Version

2.3

Campaign

24ng

Decoy

thesmarterhold.com

meandondita.com

getzlppi.com

kaibosatadom.com

ibggroupkerala.com

emmymorrow.xyz

wandallia.com

jogiyoga.support

vuagiaychatt.com

jadhavconstructions.com

hypydeals.com

brightstarqr.com

unifi.group

derm-course.com

jvbcloud.com

upuwallet.com

115manhuang.com

ashleytdg.com

ptpatennis.com

noodahl.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/2036-12-0x0000000000400000-0x0000000000428000-memory.dmp	xloader
behavioral2/memory/2036-17-0x0000000000400000-0x0000000000428000-memory.dmp	xloader
behavioral2/memory/3956-23-0x0000000000460000-0x0000000000488000-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 4100 set thread context of 2036	4100	vbc.exe	99
PID 2036 set thread context of 3436	2036	vbc.exe	56
PID 3956 set thread context of 3436	3956	raserver.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	raserver.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious behavior: EnumeratesProcesses 44 IoCs

pid	Process
2036	vbc.exe
2036	vbc.exe
2036	vbc.exe
2036	vbc.exe
3956	raserver.exe
3956	raserver.exe
3956	raserver.exe
3956	raserver.exe
3956	raserver.exe
3956	raserver.exe
3956	raserver.exe
3956	raserver.exe
3956	raserver.exe
3956	raserver.exe
3956	raserver.exe
3956	raserver.exe
3956	raserver.exe
3956	raserver.exe
3956	raserver.exe
3956	raserver.exe
3956	raserver.exe
3956	raserver.exe
3956	raserver.exe
3956	raserver.exe
3956	raserver.exe
3956	raserver.exe
3956	raserver.exe
3956	raserver.exe
3956	raserver.exe
3956	raserver.exe
3956	raserver.exe
3956	raserver.exe
3956	raserver.exe
3956	raserver.exe
3956	raserver.exe
3956	raserver.exe
3956	raserver.exe
3956	raserver.exe
3956	raserver.exe
3956	raserver.exe
3956	raserver.exe
3956	raserver.exe
3956	raserver.exe
3956	raserver.exe

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
2036	vbc.exe
2036	vbc.exe
2036	vbc.exe
3956	raserver.exe
3956	raserver.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2036	vbc.exe
Token: SeDebugPrivilege	3956	raserver.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 4100 wrote to memory of 2036	4100	vbc.exe	99
PID 4100 wrote to memory of 2036	4100	vbc.exe	99
PID 4100 wrote to memory of 2036	4100	vbc.exe	99
PID 4100 wrote to memory of 2036	4100	vbc.exe	99
PID 4100 wrote to memory of 2036	4100	vbc.exe	99
PID 4100 wrote to memory of 2036	4100	vbc.exe	99
PID 3436 wrote to memory of 3956	3436	Explorer.EXE	100
PID 3436 wrote to memory of 3956	3436	Explorer.EXE	100
PID 3436 wrote to memory of 3956	3436	Explorer.EXE	100
PID 3956 wrote to memory of 4952	3956	raserver.exe	101
PID 3956 wrote to memory of 4952	3956	raserver.exe	101
PID 3956 wrote to memory of 4952	3956	raserver.exe	101

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:3436
- 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:4100
- - 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:2036
- C:\Windows\SysWOW64\raserver.exe
  "C:\Windows\SysWOW64\raserver.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:3956
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\vbc.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:4952

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/2036-12-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download
memory/2036-18-0x0000000001540000-0x0000000001550000-memory.dmp

Filesize
64KB

Download
memory/2036-17-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download
memory/2036-15-0x0000000001A70000-0x0000000001DBA000-memory.dmp

Filesize
3.3MB

Download
memory/3436-29-0x00000000083E0000-0x0000000008567000-memory.dmp

Filesize
1.5MB

Download
memory/3436-28-0x00000000083E0000-0x0000000008567000-memory.dmp

Filesize
1.5MB

Download
memory/3436-24-0x0000000002490000-0x00000000025F6000-memory.dmp

Filesize
1.4MB

Download
memory/3436-19-0x0000000002490000-0x00000000025F6000-memory.dmp

Filesize
1.4MB

Download
memory/3956-20-0x0000000000990000-0x00000000009AF000-memory.dmp

Filesize
124KB

Download
memory/3956-22-0x0000000000990000-0x00000000009AF000-memory.dmp

Filesize
124KB

Download
memory/3956-23-0x0000000000460000-0x0000000000488000-memory.dmp

Filesize
160KB

Download
memory/4100-6-0x0000000005B30000-0x0000000005B4C000-memory.dmp

Filesize
112KB

Download
memory/4100-8-0x000000007498E000-0x000000007498F000-memory.dmp

Filesize
4KB

Download
memory/4100-14-0x0000000074980000-0x0000000075130000-memory.dmp

Filesize
7.7MB

Download
memory/4100-7-0x00000000068C0000-0x000000000695C000-memory.dmp

Filesize
624KB

Download
memory/4100-9-0x0000000074980000-0x0000000075130000-memory.dmp

Filesize
7.7MB

Download
memory/4100-5-0x00000000055A0000-0x00000000055AA000-memory.dmp

Filesize
40KB

Download
memory/4100-4-0x0000000074980000-0x0000000075130000-memory.dmp

Filesize
7.7MB

Download
memory/4100-0-0x000000007498E000-0x000000007498F000-memory.dmp

Filesize
4KB

Download
memory/4100-11-0x000000000A780000-0x000000000A7B6000-memory.dmp

Filesize
216KB

Download
memory/4100-10-0x0000000008090000-0x00000000080FC000-memory.dmp

Filesize
432KB

Download
memory/4100-3-0x00000000055C0000-0x0000000005652000-memory.dmp

Filesize
584KB

Download
memory/4100-2-0x0000000005B70000-0x0000000006114000-memory.dmp

Filesize
5.6MB

Download
memory/4100-1-0x0000000000AD0000-0x0000000000B88000-memory.dmp

Filesize
736KB

Download

Analysis

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