xloader | e4368355994cacf472d053ff31a672820b4a293b7f7cff9eb1347dbe5335c9d7

Analysis

max time kernel
149s
max time network
153s
platform
windows7_x64
resource
win7-20220414-en
submitted
08/07/2022, 15:11

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General

Target
b1136341dce035655548d5c78daca86e.exe
Size 384KB
Sample220708-skk4mshee4
SHA256 e4368355994cacf472d053ff31a672820b4a293b7f7cff9eb1347dbe5335c9d7
MD5 b1136341dce035655548d5c78daca86e
SHA1 1a834d12401aec960fa9300e825d4c0ba5c592b4
SHA512 73b10a94d962dbe4ea48babec9d26b470d9ef82443512a77a63cc5202fd0449c1ad76d69b100c5369b5041ac6444521cc559370798133721ff638078e0c153c6
MD5 SHA1 SHA512

Score

10^/10

xloader mt88 loader persistence rat spyware stealer suricata

Malware Config

Extracted

Family

xloader

Version

Campaign

mt88

Decoy

syzbf32.xyz
pertlines.com
vybaveniprocyklostezky.com
elianmsalas.tech
a-snag-tokei-kaitori.com
tuvistaing.com
whoyoucall.net
l8e9gr.xyz
sophrologuemontevrain77.com
ciclean.com
the-roel.com
campgreencove.com
foremostbookkeeping.com
zamanscorner.com
efeturozemniyet.com
penelope.team
murata.life
solfuls.com
tradefitinvesting.com
skinbid.pro
hongyanwulei.com
aifconference.com
happinesssangha.com
microw0rker.com
agcompanion.com
renovacg.com
sisterfuckers.info
bigrockhuntingpreserve.com
loudbodies.info
hcr.store
000006138.com
ganitvigyan.com
libmananforum.xyz
bastianrob.xyz
leafybooster.com
65ratubh3j5fi.xyz
8id9pl8944ktb.xyz
designerinfotech.com
prmainey.com
5092377.com
mayascleanservices.com
selectendeavor.com
qxu0l1pgl9jm1.xyz
yanpoake.com
constructiongst.com
wwwfreemovies2021.com
norsgaard.net
raytan5.com
electricsemiloans.com
modernworklabs.com
sodapins.com
scwsav.com
ihrorg.com
vvv223.com
sofanemphuyen.com
zaqv40.xyz
verdure720.com
mysitetutorial.com
tur-advocates.com
vistadocs.com
kosodate-tiger.com
micahlinacero.com
nusires.com
ardtalscase.com
mariafonsecafreitas.com

Signatures

Xloader
Xloader is a rebranded version of Formbook malware.
loader xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
suricata: ET MALWARE FormBook CnC Checkin (GET)
suricata

Xloader payload 6 IoCs

rat

resource	yara_rule
behavioral1/memory/1160-61-0x000000000041F2C0-mapping.dmp	xloader
behavioral1/memory/1160-60-0x0000000000400000-0x000000000042B000-memory.dmp	xloader
behavioral1/memory/1160-63-0x0000000000400000-0x000000000042B000-memory.dmp	xloader
behavioral1/memory/1160-70-0x0000000000400000-0x000000000042B000-memory.dmp	xloader
behavioral1/memory/2028-73-0x00000000001D0000-0x00000000001FB000-memory.dmp	xloader
behavioral1/memory/2028-78-0x00000000001D0000-0x00000000001FB000-memory.dmp	xloader

Adds policy Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	cmd.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\JTUXVLWH9VE = "C:\\Program Files (x86)\\N9rex\\serviceswnmxv4.exe"	cmd.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 1680 set thread context of 1160	1680	b1136341dce035655548d5c78daca86e.exe	28
PID 1160 set thread context of 1252	1160	cvtres.exe	13
PID 1160 set thread context of 1252	1160	cvtres.exe	13
PID 2028 set thread context of 1252	2028	cmd.exe	13

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\N9rex\serviceswnmxv4.exe	cmd.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\Registry\User\S-1-5-21-2277218442-1199762539-2004043321-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	cmd.exe

Suspicious behavior: EnumeratesProcesses 15 IoCs

pid	Process
1160	cvtres.exe
1160	cvtres.exe
1160	cvtres.exe
2028	cmd.exe
2028	cmd.exe
2028	cmd.exe
2028	cmd.exe
2028	cmd.exe
2028	cmd.exe
2028	cmd.exe
2028	cmd.exe
2028	cmd.exe
2028	cmd.exe
2028	cmd.exe
2028	cmd.exe

Suspicious behavior: MapViewOfSection 8 IoCs

pid	Process
1160	cvtres.exe
1160	cvtres.exe
1160	cvtres.exe
1160	cvtres.exe
2028	cmd.exe
2028	cmd.exe
2028	cmd.exe
2028	cmd.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1160	cvtres.exe
Token: SeDebugPrivilege	2028	cmd.exe

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
1252	Explorer.EXE
1252	Explorer.EXE

Suspicious use of SendNotifyMessage 2 IoCs

pid	Process
1252	Explorer.EXE
1252	Explorer.EXE

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 1680 wrote to memory of 1160	1680	b1136341dce035655548d5c78daca86e.exe	28
PID 1680 wrote to memory of 1160	1680	b1136341dce035655548d5c78daca86e.exe	28
PID 1680 wrote to memory of 1160	1680	b1136341dce035655548d5c78daca86e.exe	28
PID 1680 wrote to memory of 1160	1680	b1136341dce035655548d5c78daca86e.exe	28
PID 1680 wrote to memory of 1160	1680	b1136341dce035655548d5c78daca86e.exe	28
PID 1680 wrote to memory of 1160	1680	b1136341dce035655548d5c78daca86e.exe	28
PID 1680 wrote to memory of 1160	1680	b1136341dce035655548d5c78daca86e.exe	28
PID 1160 wrote to memory of 2028	1160	cvtres.exe	29
PID 1160 wrote to memory of 2028	1160	cvtres.exe	29
PID 1160 wrote to memory of 2028	1160	cvtres.exe	29
PID 1160 wrote to memory of 2028	1160	cvtres.exe	29
PID 2028 wrote to memory of 1788	2028	cmd.exe	30
PID 2028 wrote to memory of 1788	2028	cmd.exe	30
PID 2028 wrote to memory of 1788	2028	cmd.exe	30
PID 2028 wrote to memory of 1788	2028	cmd.exe	30
PID 2028 wrote to memory of 1972	2028	cmd.exe	33
PID 2028 wrote to memory of 1972	2028	cmd.exe	33
PID 2028 wrote to memory of 1972	2028	cmd.exe	33
PID 2028 wrote to memory of 1972	2028	cmd.exe	33
PID 2028 wrote to memory of 1972	2028	cmd.exe	33

System policy modification 1 TTPs 1 IoCs

evasion

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:1252
- C:\Users\Admin\AppData\Local\Temp\b1136341dce035655548d5c78daca86e.exe
  "C:\Users\Admin\AppData\Local\Temp\b1136341dce035655548d5c78daca86e.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of WriteProcessMemory
  PID:1680
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:1160
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\SysWOW64\cmd.exe"
      4⤵
      Adds policy Run key to start application
      Suspicious use of SetThreadContext
      Drops file in Program Files directory
      Modifies Internet Explorer settings
      Suspicious behavior: EnumeratesProcesses
      Suspicious behavior: MapViewOfSection
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      System policy modification
      PID:2028
    - - C:\Windows\SysWOW64\cmd.exe
        
        /c del "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe"
        5⤵
        
        PID:1788
    - - C:\Program Files\Mozilla Firefox\Firefox.exe
        
        "C:\Program Files\Mozilla Firefox\Firefox.exe"
        5⤵
        
        PID:1972

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Credentials in Files

T1081

Discovery

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

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Downloads

memory/1160-65-0x0000000000140000-0x0000000000151000-memory.dmp

Download

memory/1160-70-0x0000000000400000-0x000000000042B000-memory.dmp

Download

memory/1160-68-0x0000000000560000-0x0000000000571000-memory.dmp

Download

memory/1160-58-0x0000000000400000-0x000000000042B000-memory.dmp

Download

memory/1160-57-0x0000000000400000-0x000000000042B000-memory.dmp

Download

memory/1160-60-0x0000000000400000-0x000000000042B000-memory.dmp

Download

memory/1160-63-0x0000000000400000-0x000000000042B000-memory.dmp

Download

memory/1160-64-0x00000000009E0000-0x0000000000CE3000-memory.dmp

Download

memory/1252-69-0x0000000004BB0000-0x0000000004C5E000-memory.dmp

Download

memory/1252-79-0x0000000004F70000-0x0000000005064000-memory.dmp

Download

memory/1252-77-0x0000000004F70000-0x0000000005064000-memory.dmp

Download

memory/1252-66-0x00000000039F0000-0x0000000003AA1000-memory.dmp

Download

memory/1680-56-0x0000000000800000-0x0000000000836000-memory.dmp

Download

memory/1680-54-0x0000000000BA0000-0x0000000000C02000-memory.dmp

Download

memory/1680-55-0x00000000007D0000-0x0000000000804000-memory.dmp

Download

memory/2028-73-0x00000000001D0000-0x00000000001FB000-memory.dmp

Download

memory/2028-75-0x0000000001F60000-0x0000000002263000-memory.dmp

Download

memory/2028-76-0x0000000001C90000-0x0000000001D20000-memory.dmp

Download

memory/2028-72-0x000000004AC00000-0x000000004AC4C000-memory.dmp

Download

memory/2028-78-0x00000000001D0000-0x00000000001FB000-memory.dmp

Download

memory/2028-80-0x00000000752B1000-0x00000000752B3000-memory.dmp

Download