xloader | 97d50f2f4b0cc96385e36d71fbbd2c7d55c23ba3a74495a347ac582ffff8c2ab

General

Target

PAYMENT.exe
Size

753KB
MD5

dceac041ccf4756470e11a7cf926f060
SHA1

3f887b2125c55ddb0b4dcfe4b49b9bf7f0271510
SHA256

1def824855543f8011e65445f549f01648856e222215078ebc99281415bc1268
SHA512

06ecd9b19fc3b1a7fdb6a621b9219407c3512330ccb0c405157373b64675ffa4c6d9e2ebacf2440b3ae6c6bceec24b0331d645961b1fb846d246486d42d14b7b
SSDEEP

12288:cetA1TrromUStJaIYZULyQHFoeqYsTFop4Cd1k4ONdL38arAbNjsyaUVKnp:7IHL72DNTUvkHb0zahp

Score

10^/10

xloader f4ut discovery loader rat

Malware Config

Extracted

Family

xloader

Version

2.3

Campaign

f4ut

Decoy

studiokventura.com

rmnslashes.com

oklahomapropertybuyersllc.com

pmfce.net

yingkuncy.com

theailearning.com

artistic1cleaning.com

shqinyue.com

dentaldunya.com

karatuhotel.com

renttoownhomephoenix.com

0087wt.com

hotelsearchkwnet.com

dentavangart.com

98700l.com

seattleproducecompany.com

magicparadigm.com

cunix88.com

vr646.com

calmonleiloes.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/3384-13-0x0000000000400000-0x0000000000429000-memory.dmp	xloader
behavioral2/memory/3384-18-0x0000000000400000-0x0000000000429000-memory.dmp	xloader
behavioral2/memory/2640-23-0x00000000003E0000-0x0000000000409000-memory.dmp	xloader

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 684 set thread context of 3384	684	PAYMENT.exe	91
PID 3384 set thread context of 3568	3384	PAYMENT.exe	56
PID 2640 set thread context of 3568	2640	cmstp.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	PAYMENT.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmstp.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious behavior: EnumeratesProcesses 40 IoCs

pid	Process
3384	PAYMENT.exe
3384	PAYMENT.exe
3384	PAYMENT.exe
3384	PAYMENT.exe
2640	cmstp.exe
2640	cmstp.exe
2640	cmstp.exe
2640	cmstp.exe
2640	cmstp.exe
2640	cmstp.exe
2640	cmstp.exe
2640	cmstp.exe
2640	cmstp.exe
2640	cmstp.exe
2640	cmstp.exe
2640	cmstp.exe
2640	cmstp.exe
2640	cmstp.exe
2640	cmstp.exe
2640	cmstp.exe
2640	cmstp.exe
2640	cmstp.exe
2640	cmstp.exe
2640	cmstp.exe
2640	cmstp.exe
2640	cmstp.exe
2640	cmstp.exe
2640	cmstp.exe
2640	cmstp.exe
2640	cmstp.exe
2640	cmstp.exe
2640	cmstp.exe
2640	cmstp.exe
2640	cmstp.exe
2640	cmstp.exe
2640	cmstp.exe
2640	cmstp.exe
2640	cmstp.exe
2640	cmstp.exe
2640	cmstp.exe

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
3384	PAYMENT.exe
3384	PAYMENT.exe
3384	PAYMENT.exe
2640	cmstp.exe
2640	cmstp.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3384	PAYMENT.exe
Token: SeDebugPrivilege	2640	cmstp.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 684 wrote to memory of 3384	684	PAYMENT.exe	91
PID 684 wrote to memory of 3384	684	PAYMENT.exe	91
PID 684 wrote to memory of 3384	684	PAYMENT.exe	91
PID 684 wrote to memory of 3384	684	PAYMENT.exe	91
PID 684 wrote to memory of 3384	684	PAYMENT.exe	91
PID 684 wrote to memory of 3384	684	PAYMENT.exe	91
PID 3568 wrote to memory of 2640	3568	Explorer.EXE	92
PID 3568 wrote to memory of 2640	3568	Explorer.EXE	92
PID 3568 wrote to memory of 2640	3568	Explorer.EXE	92
PID 2640 wrote to memory of 1196	2640	cmstp.exe	93
PID 2640 wrote to memory of 1196	2640	cmstp.exe	93
PID 2640 wrote to memory of 1196	2640	cmstp.exe	93

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:3568
- C:\Users\Admin\AppData\Local\Temp\PAYMENT.exe
  "C:\Users\Admin\AppData\Local\Temp\PAYMENT.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:684
- - C:\Users\Admin\AppData\Local\Temp\PAYMENT.exe
    "C:\Users\Admin\AppData\Local\Temp\PAYMENT.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:3384
- C:\Windows\SysWOW64\cmstp.exe
  "C:\Windows\SysWOW64\cmstp.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:2640
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\PAYMENT.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:1196

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

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/684-12-0x00000000084E0000-0x0000000008512000-memory.dmp

Filesize
200KB

Download
memory/684-4-0x00000000056E0000-0x0000000005772000-memory.dmp

Filesize
584KB

Download
memory/684-0-0x000000007474E000-0x000000007474F000-memory.dmp

Filesize
4KB

Download
memory/684-3-0x0000000005BF0000-0x0000000006194000-memory.dmp

Filesize
5.6MB

Download
memory/684-7-0x00000000057E0000-0x0000000005836000-memory.dmp

Filesize
344KB

Download
memory/684-5-0x00000000056B0000-0x00000000056BA000-memory.dmp

Filesize
40KB

Download
memory/684-6-0x0000000074740000-0x0000000074EF0000-memory.dmp

Filesize
7.7MB

Download
memory/684-15-0x0000000074740000-0x0000000074EF0000-memory.dmp

Filesize
7.7MB

Download
memory/684-8-0x00000000059C0000-0x00000000059E2000-memory.dmp

Filesize
136KB

Download
memory/684-9-0x000000007474E000-0x000000007474F000-memory.dmp

Filesize
4KB

Download
memory/684-10-0x0000000074740000-0x0000000074EF0000-memory.dmp

Filesize
7.7MB

Download
memory/684-11-0x0000000008450000-0x00000000084CA000-memory.dmp

Filesize
488KB

Download
memory/684-2-0x00000000055A0000-0x000000000563C000-memory.dmp

Filesize
624KB

Download
memory/684-1-0x0000000000B50000-0x0000000000C14000-memory.dmp

Filesize
784KB

Download
memory/2640-21-0x0000000000590000-0x00000000005A6000-memory.dmp

Filesize
88KB

Download
memory/2640-22-0x0000000000590000-0x00000000005A6000-memory.dmp

Filesize
88KB

Download
memory/2640-23-0x00000000003E0000-0x0000000000409000-memory.dmp

Filesize
164KB

Download
memory/3384-13-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/3384-16-0x0000000001530000-0x000000000187A000-memory.dmp

Filesize
3.3MB

Download
memory/3384-19-0x00000000014A0000-0x00000000014B1000-memory.dmp

Filesize
68KB

Download
memory/3384-18-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/3568-20-0x0000000007530000-0x000000000763D000-memory.dmp

Filesize
1.1MB

Download
memory/3568-24-0x0000000007530000-0x000000000763D000-memory.dmp

Filesize
1.1MB

Download
memory/3568-28-0x0000000002F70000-0x000000000302A000-memory.dmp

Filesize
744KB

Download
memory/3568-29-0x0000000002F70000-0x000000000302A000-memory.dmp

Filesize
744KB

Download

Analysis

Sharing