xloader | 7384a61fc69ce24610f7c4658c2ef8786c4cdc5d6ad6b33d1a9f506d6b6388d3

General

Target

$PLUGINSDIR/rzvd.dll
Size

27KB
MD5

d255169c5e130e0104b01f2ceb04c885
SHA1

e9a0bf4c711f63829fb077b75b57a14b6bdda4bc
SHA256

66c07a5eb743d77deff8b16a8cbcc1be0795df5197874f23fd440fbf0cae38a8
SHA512

15f54c5f3de381c4b935886bd120d1e4ab609109015b6b49b842aa34b465467706ac79e0b8ad0961046e841e8e352df2a12b70653c960115e6ff92c4b282605e
SSDEEP

768:GoFuDrc9RGl9YRFbDkAkXa37bcM0qOuB1JzTMv:hErUGlYr0a8M0SdY

Score

10^/10

xloader ons6 loader rat

Malware Config

Extracted

Family

xloader

Version

2.5

Campaign

ons6

Decoy

946acc.net

ilkermulla.com

edificationhub.com

aptbaby.com

luisrgonzalez.com

postandpine.com

objective-object.com

storeydrive.rentals

mobile-find.com

africanbridaluk.com

zzjn12.xyz

ritechoiceinvestmentgroup.com

zitzies.xyz

trulyproofreading.com

ktndetermine.xyz

advertising.land

keywordgomuwk.xyz

niecliomusicspirit.com

lhortelecom.com

cryptochieftan.com

Signatures

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

Xloader payload 5 IoCs

rat

resource	yara_rule
behavioral3/memory/2968-2-0x0000000000400000-0x0000000000429000-memory.dmp	xloader
behavioral3/memory/2968-7-0x0000000000400000-0x0000000000429000-memory.dmp	xloader
behavioral3/memory/2968-12-0x0000000000400000-0x0000000000429000-memory.dmp	xloader
behavioral3/memory/2920-18-0x0000000000080000-0x00000000000A9000-memory.dmp	xloader
behavioral3/memory/2920-20-0x0000000000080000-0x00000000000A9000-memory.dmp	xloader

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 2272 set thread context of 2968	2272	rundll32.exe	29
PID 2968 set thread context of 1200	2968	rundll32.exe	21
PID 2968 set thread context of 1200	2968	rundll32.exe	21
PID 2920 set thread context of 1200	2920	chkdsk.exe	21

Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	chkdsk.exe

Suspicious behavior: EnumeratesProcesses 31 IoCs

pid	Process
2968	rundll32.exe
2968	rundll32.exe
2968	rundll32.exe
2920	chkdsk.exe
2920	chkdsk.exe
2920	chkdsk.exe
2920	chkdsk.exe
2920	chkdsk.exe
2920	chkdsk.exe
2920	chkdsk.exe
2920	chkdsk.exe
2920	chkdsk.exe
2920	chkdsk.exe
2920	chkdsk.exe
2920	chkdsk.exe
2920	chkdsk.exe
2920	chkdsk.exe
2920	chkdsk.exe
2920	chkdsk.exe
2920	chkdsk.exe
2920	chkdsk.exe
2920	chkdsk.exe
2920	chkdsk.exe
2920	chkdsk.exe
2920	chkdsk.exe
2920	chkdsk.exe
2920	chkdsk.exe
2920	chkdsk.exe
2920	chkdsk.exe
2920	chkdsk.exe
2920	chkdsk.exe

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
2968	rundll32.exe
2968	rundll32.exe
2968	rundll32.exe
2968	rundll32.exe
2920	chkdsk.exe
2920	chkdsk.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2968	rundll32.exe
Token: SeDebugPrivilege	2920	chkdsk.exe

Suspicious use of WriteProcessMemory 25 IoCs

description	pid	Process	procid_target
PID 2772 wrote to memory of 2272	2772	rundll32.exe	28
PID 2772 wrote to memory of 2272	2772	rundll32.exe	28
PID 2772 wrote to memory of 2272	2772	rundll32.exe	28
PID 2772 wrote to memory of 2272	2772	rundll32.exe	28
PID 2772 wrote to memory of 2272	2772	rundll32.exe	28
PID 2772 wrote to memory of 2272	2772	rundll32.exe	28
PID 2772 wrote to memory of 2272	2772	rundll32.exe	28
PID 2272 wrote to memory of 2968	2272	rundll32.exe	29
PID 2272 wrote to memory of 2968	2272	rundll32.exe	29
PID 2272 wrote to memory of 2968	2272	rundll32.exe	29
PID 2272 wrote to memory of 2968	2272	rundll32.exe	29
PID 2272 wrote to memory of 2968	2272	rundll32.exe	29
PID 2272 wrote to memory of 2968	2272	rundll32.exe	29
PID 2272 wrote to memory of 2968	2272	rundll32.exe	29
PID 2272 wrote to memory of 2968	2272	rundll32.exe	29
PID 2272 wrote to memory of 2968	2272	rundll32.exe	29
PID 2272 wrote to memory of 2968	2272	rundll32.exe	29
PID 1200 wrote to memory of 2920	1200	Explorer.EXE	30
PID 1200 wrote to memory of 2920	1200	Explorer.EXE	30
PID 1200 wrote to memory of 2920	1200	Explorer.EXE	30
PID 1200 wrote to memory of 2920	1200	Explorer.EXE	30
PID 2920 wrote to memory of 2716	2920	chkdsk.exe	31
PID 2920 wrote to memory of 2716	2920	chkdsk.exe	31
PID 2920 wrote to memory of 2716	2920	chkdsk.exe	31
PID 2920 wrote to memory of 2716	2920	chkdsk.exe	31

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1200
- C:\Windows\system32\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\rzvd.dll,#1
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2772
- - C:\Windows\SysWOW64\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\rzvd.dll,#1
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:2272
  - - C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\rzvd.dll,#1
      4⤵
      Suspicious use of SetThreadContext
      Suspicious behavior: EnumeratesProcesses
      Suspicious behavior: MapViewOfSection
      Suspicious use of AdjustPrivilegeToken
      PID:2968
- C:\Windows\SysWOW64\chkdsk.exe
  "C:\Windows\SysWOW64\chkdsk.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Enumerates system info in registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2920
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Windows\SysWOW64\rundll32.exe"
    3⤵
    PID:2716

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1200-9-0x0000000002900000-0x0000000002A00000-memory.dmp

Filesize
1024KB

Download
memory/1200-15-0x0000000008890000-0x0000000008A23000-memory.dmp

Filesize
1.6MB

Download
memory/1200-24-0x0000000008890000-0x0000000008A23000-memory.dmp

Filesize
1.6MB

Download
memory/1200-14-0x0000000006260000-0x00000000063C4000-memory.dmp

Filesize
1.4MB

Download
memory/1200-10-0x0000000006260000-0x00000000063C4000-memory.dmp

Filesize
1.4MB

Download
memory/2272-3-0x0000000075080000-0x000000007508A000-memory.dmp

Filesize
40KB

Download
memory/2272-0-0x0000000075080000-0x000000007508A000-memory.dmp

Filesize
40KB

Download
memory/2272-4-0x0000000075070000-0x000000007507A000-memory.dmp

Filesize
40KB

Download
memory/2272-1-0x0000000075070000-0x000000007507A000-memory.dmp

Filesize
40KB

Download
memory/2920-22-0x0000000000940000-0x00000000009D0000-memory.dmp

Filesize
576KB

Download
memory/2920-20-0x0000000000080000-0x00000000000A9000-memory.dmp

Filesize
164KB

Download
memory/2920-19-0x0000000000AE0000-0x0000000000DE3000-memory.dmp

Filesize
3.0MB

Download
memory/2920-17-0x0000000000EC0000-0x0000000000EC7000-memory.dmp

Filesize
28KB

Download
memory/2920-18-0x0000000000080000-0x00000000000A9000-memory.dmp

Filesize
164KB

Download
memory/2920-16-0x0000000000EC0000-0x0000000000EC7000-memory.dmp

Filesize
28KB

Download
memory/2968-5-0x0000000002040000-0x0000000002343000-memory.dmp

Filesize
3.0MB

Download
memory/2968-13-0x00000000002A0000-0x00000000002B1000-memory.dmp

Filesize
68KB

Download
memory/2968-12-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/2968-8-0x0000000000230000-0x0000000000241000-memory.dmp

Filesize
68KB

Download
memory/2968-7-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/2968-2-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download

Analysis

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