xloader | 694117b21c4400edfe53b8d129cc2cdbd3cfbacb64aea3d2149dd43deb69b6b1

General

Target

RFQ_2345.exe
Size

789KB
MD5

3b5d2404cde0045707b58adc2eada0bc
SHA1

8b6885cc398d14d264c35064da5f5c7a1563b6b5
SHA256

3cd1e0124a1fd0d922c432d01e909479692e7133dc1b33b739e7b9701b03444d
SHA512

b6bf4dfd354de57ffdf697dbfe97e24a3ed08ad8d1ffe7297415a994e803aef0aed9ce6afa74e823ce4517edfa816d22f95460e1f085d587f3ebcf1c4d94ca10
SSDEEP

12288:fwBQSnZl+lZbAy/TYTXSNwRzli/cTSxep+dqQSnL/u8kbW7+lIBkcLxElV6iQQR1:fw18bHTcXSedUxeXnzKCSlmkmxEbP

Score

10^/10

xloader bu2n discovery loader rat

Malware Config

Extracted

Family

xloader

Version

2.3

Campaign

bu2n

Decoy

vacuummates.com

orderladolcevita.com

sumopub.net

adamerico.com

royalesalon.com

deardealta.com

bostonm.info

eugenfischer.net

xn--ah-ska.com

mahirgyan.com

termogenicodicas.com

safaacn.com

honeystreetdigital.com

taylorscontruction.com

incontrol-co.com

smtp0769.com

distinguishedcavalry.life

inthehillsinc.com

concordarabuluculuk.xyz

persommwine.com

Signatures

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

Xloader payload 3 IoCs

rat

resource	yara_rule
behavioral2/memory/1700-12-0x0000000000400000-0x0000000000429000-memory.dmp	xloader
behavioral2/memory/1700-17-0x0000000000400000-0x0000000000429000-memory.dmp	xloader
behavioral2/memory/4504-22-0x0000000001000000-0x0000000001029000-memory.dmp	xloader

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 4912 set thread context of 1700	4912	RFQ_2345.exe	92
PID 1700 set thread context of 3436	1700	RFQ_2345.exe	56
PID 4504 set thread context of 3436	4504	ipconfig.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	RFQ_2345.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ipconfig.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.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
4504	ipconfig.exe

Suspicious behavior: EnumeratesProcesses 40 IoCs

pid	Process
4912	RFQ_2345.exe
4912	RFQ_2345.exe
1700	RFQ_2345.exe
1700	RFQ_2345.exe
1700	RFQ_2345.exe
1700	RFQ_2345.exe
4504	ipconfig.exe
4504	ipconfig.exe
4504	ipconfig.exe
4504	ipconfig.exe
4504	ipconfig.exe
4504	ipconfig.exe
4504	ipconfig.exe
4504	ipconfig.exe
4504	ipconfig.exe
4504	ipconfig.exe
4504	ipconfig.exe
4504	ipconfig.exe
4504	ipconfig.exe
4504	ipconfig.exe
4504	ipconfig.exe
4504	ipconfig.exe
4504	ipconfig.exe
4504	ipconfig.exe
4504	ipconfig.exe
4504	ipconfig.exe
4504	ipconfig.exe
4504	ipconfig.exe
4504	ipconfig.exe
4504	ipconfig.exe
4504	ipconfig.exe
4504	ipconfig.exe
4504	ipconfig.exe
4504	ipconfig.exe
4504	ipconfig.exe
4504	ipconfig.exe
4504	ipconfig.exe
4504	ipconfig.exe
4504	ipconfig.exe
4504	ipconfig.exe

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
1700	RFQ_2345.exe
1700	RFQ_2345.exe
1700	RFQ_2345.exe
4504	ipconfig.exe
4504	ipconfig.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	4912	RFQ_2345.exe
Token: SeDebugPrivilege	1700	RFQ_2345.exe
Token: SeDebugPrivilege	4504	ipconfig.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 4912 wrote to memory of 4948	4912	RFQ_2345.exe	91
PID 4912 wrote to memory of 4948	4912	RFQ_2345.exe	91
PID 4912 wrote to memory of 4948	4912	RFQ_2345.exe	91
PID 4912 wrote to memory of 1700	4912	RFQ_2345.exe	92
PID 4912 wrote to memory of 1700	4912	RFQ_2345.exe	92
PID 4912 wrote to memory of 1700	4912	RFQ_2345.exe	92
PID 4912 wrote to memory of 1700	4912	RFQ_2345.exe	92
PID 4912 wrote to memory of 1700	4912	RFQ_2345.exe	92
PID 4912 wrote to memory of 1700	4912	RFQ_2345.exe	92
PID 3436 wrote to memory of 4504	3436	Explorer.EXE	93
PID 3436 wrote to memory of 4504	3436	Explorer.EXE	93
PID 3436 wrote to memory of 4504	3436	Explorer.EXE	93
PID 4504 wrote to memory of 3420	4504	ipconfig.exe	94
PID 4504 wrote to memory of 3420	4504	ipconfig.exe	94
PID 4504 wrote to memory of 3420	4504	ipconfig.exe	94

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:3436
- C:\Users\Admin\AppData\Local\Temp\RFQ_2345.exe
  "C:\Users\Admin\AppData\Local\Temp\RFQ_2345.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4912
- - C:\Users\Admin\AppData\Local\Temp\RFQ_2345.exe
    "C:\Users\Admin\AppData\Local\Temp\RFQ_2345.exe"
    3⤵
    PID:4948
- - C:\Users\Admin\AppData\Local\Temp\RFQ_2345.exe
    "C:\Users\Admin\AppData\Local\Temp\RFQ_2345.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:1700
- 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:4504
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\RFQ_2345.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:3420

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/1700-12-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/1700-17-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/1700-18-0x0000000001300000-0x0000000001310000-memory.dmp

Filesize
64KB

Download
memory/1700-15-0x0000000001880000-0x0000000001BCA000-memory.dmp

Filesize
3.3MB

Download
memory/3436-30-0x0000000003190000-0x000000000324D000-memory.dmp

Filesize
756KB

Download
memory/3436-28-0x0000000003190000-0x000000000324D000-memory.dmp

Filesize
756KB

Download
memory/3436-27-0x0000000003190000-0x000000000324D000-memory.dmp

Filesize
756KB

Download
memory/3436-23-0x00000000085B0000-0x00000000086B8000-memory.dmp

Filesize
1.0MB

Download
memory/3436-19-0x00000000085B0000-0x00000000086B8000-memory.dmp

Filesize
1.0MB

Download
memory/4504-20-0x00000000001F0000-0x00000000001FB000-memory.dmp

Filesize
44KB

Download
memory/4504-21-0x00000000001F0000-0x00000000001FB000-memory.dmp

Filesize
44KB

Download
memory/4504-22-0x0000000001000000-0x0000000001029000-memory.dmp

Filesize
164KB

Download
memory/4912-14-0x0000000074920000-0x00000000750D0000-memory.dmp

Filesize
7.7MB

Download
memory/4912-10-0x0000000074920000-0x00000000750D0000-memory.dmp

Filesize
7.7MB

Download
memory/4912-8-0x0000000005A60000-0x0000000005A6A000-memory.dmp

Filesize
40KB

Download
memory/4912-5-0x0000000005850000-0x000000000585A000-memory.dmp

Filesize
40KB

Download
memory/4912-6-0x0000000074920000-0x00000000750D0000-memory.dmp

Filesize
7.7MB

Download
memory/4912-7-0x0000000005990000-0x00000000059E6000-memory.dmp

Filesize
344KB

Download
memory/4912-0-0x000000007492E000-0x000000007492F000-memory.dmp

Filesize
4KB

Download
memory/4912-9-0x000000007492E000-0x000000007492F000-memory.dmp

Filesize
4KB

Download
memory/4912-11-0x0000000001680000-0x00000000016E0000-memory.dmp

Filesize
384KB

Download
memory/4912-4-0x00000000058F0000-0x0000000005982000-memory.dmp

Filesize
584KB

Download
memory/4912-3-0x0000000005E00000-0x00000000063A4000-memory.dmp

Filesize
5.6MB

Download
memory/4912-2-0x00000000057B0000-0x000000000584C000-memory.dmp

Filesize
624KB

Download
memory/4912-1-0x0000000000D00000-0x0000000000DCC000-memory.dmp

Filesize
816KB

Download

Analysis

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