xloader | d81d0615dc76dad801ab0ee2e921abb2c4f6108a86fe2967dd55293a346ca9a5

General

Target

vbc.exe
Size

337KB
MD5

fb861097be51a4c1f963c83f6d6053fb
SHA1

75184cd1e66ccbce5cc3ff42e47c24c3d87a5964
SHA256

7834211343251375fd593b99c6d64a9c9cd90acb68d0f3970a9c964ad193c1b3
SHA512

289cbdbffa9f57d00f2654fed8b0ce6009750dc111919916f300cec1dd761bda1887fd9b2668b5a64d00dac0fc2244a2b92c5d88e8ad75adf808dd8ace5193d4
SSDEEP

6144:CHpP/LXH8RjIHp9bIYFUqQPMq9VmUDsxggqqOQhvpNcJ:CHpnjcxc/bInqpYmUDsqgeep

Score

10^/10

xloader qjnt discovery loader rat

Malware Config

Extracted

Family

xloader

Version

2.3

Campaign

qjnt

Decoy

funeralinsurancetoppro.info

californiaredstate.com

xn--jpr220deud640b.com

playx.finance

siamfellow.com

tekirdagvethelp.com

forrealmodels.com

desenergie.info

whynotplus.com

graniteinaminute.com

satgurucolorlabs.com

potviper.com

racevx.xyz

thebluefishhotel.net

elletesla.com

4608capaydrive.com

buckhead-meat.com

garage-repair-near-me.com

ubique.works

markokuzmanovicpreduzetnik.com

Signatures

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

Xloader payload 4 IoCs

rat

resource	yara_rule
behavioral1/memory/2404-5-0x0000000000220000-0x000000000024A000-memory.dmp	xloader
behavioral1/memory/2544-4-0x0000000000400000-0x0000000000429000-memory.dmp	xloader
behavioral1/memory/2544-7-0x0000000000400000-0x0000000000429000-memory.dmp	xloader
behavioral1/memory/2080-15-0x0000000000080000-0x00000000000A9000-memory.dmp	xloader

Deletes itself 1 IoCs

pid	Process
2124	cmd.exe

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 2404 set thread context of 2544	2404	vbc.exe	30
PID 2544 set thread context of 1156	2544	vbc.exe	20
PID 2080 set thread context of 1156	2080	help.exe	20

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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vbc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	help.exe

Suspicious behavior: EnumeratesProcesses 31 IoCs

pid	Process
2544	vbc.exe
2544	vbc.exe
2080	help.exe
2080	help.exe
2080	help.exe
2080	help.exe
2080	help.exe
2080	help.exe
2080	help.exe
2080	help.exe
2080	help.exe
2080	help.exe
2080	help.exe
2080	help.exe
2080	help.exe
2080	help.exe
2080	help.exe
2080	help.exe
2080	help.exe
2080	help.exe
2080	help.exe
2080	help.exe
2080	help.exe
2080	help.exe
2080	help.exe
2080	help.exe
2080	help.exe
2080	help.exe
2080	help.exe
2080	help.exe
2080	help.exe

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
2544	vbc.exe
2544	vbc.exe
2544	vbc.exe
2080	help.exe
2080	help.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2544	vbc.exe
Token: SeDebugPrivilege	2080	help.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2404 wrote to memory of 2544	2404	vbc.exe	30
PID 2404 wrote to memory of 2544	2404	vbc.exe	30
PID 2404 wrote to memory of 2544	2404	vbc.exe	30
PID 2404 wrote to memory of 2544	2404	vbc.exe	30
PID 2404 wrote to memory of 2544	2404	vbc.exe	30
PID 2404 wrote to memory of 2544	2404	vbc.exe	30
PID 2404 wrote to memory of 2544	2404	vbc.exe	30
PID 1156 wrote to memory of 2080	1156	Explorer.EXE	31
PID 1156 wrote to memory of 2080	1156	Explorer.EXE	31
PID 1156 wrote to memory of 2080	1156	Explorer.EXE	31
PID 1156 wrote to memory of 2080	1156	Explorer.EXE	31
PID 2080 wrote to memory of 2124	2080	help.exe	32
PID 2080 wrote to memory of 2124	2080	help.exe	32
PID 2080 wrote to memory of 2124	2080	help.exe	32
PID 2080 wrote to memory of 2124	2080	help.exe	32

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1156
- 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:2404
- - 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:2544
- C:\Windows\SysWOW64\help.exe
  "C:\Windows\SysWOW64\help.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:2080
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\vbc.exe"
    3⤵
    - Deletes itself
    - System Location Discovery: System Language Discovery
    PID:2124

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

Loading Replay Monitor...

Downloads

memory/1156-8-0x0000000004B90000-0x0000000004C5E000-memory.dmp

Filesize
824KB

Download
memory/1156-16-0x0000000004B90000-0x0000000004C5E000-memory.dmp

Filesize
824KB

Download
memory/2080-11-0x0000000000E50000-0x0000000000E56000-memory.dmp

Filesize
24KB

Download
memory/2080-13-0x0000000000E50000-0x0000000000E56000-memory.dmp

Filesize
24KB

Download
memory/2080-15-0x0000000000080000-0x00000000000A9000-memory.dmp

Filesize
164KB

Download
memory/2404-1-0x0000000000BC0000-0x0000000000CC0000-memory.dmp

Filesize
1024KB

Download
memory/2404-5-0x0000000000220000-0x000000000024A000-memory.dmp

Filesize
168KB

Download
memory/2404-14-0x0000000000220000-0x000000000024A000-memory.dmp

Filesize
168KB

Download
memory/2544-4-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/2544-2-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2544-7-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download

Analysis

Sharing