xloader | 521eaf117bcfc62a8ae241f2b625ad3850e686cb11b48b536aa4848f96966d83

Resubmissions

21-10-2021 12:23

211021-pkwctsbbdk 10

21-10-2021 10:04

211021-l4chaaabd5 10

Analysis

max time kernel
40s
max time network
49s
platform
windows11_x64
resource
win11
submitted
21-10-2021 12:23

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General

Target

h.exe
Size

164KB
MD5

5a1625b4d218701aee2792942873844c
SHA1

7c182f2f42a6e0cfa173b984d7af9825d1d22675
SHA256

521eaf117bcfc62a8ae241f2b625ad3850e686cb11b48b536aa4848f96966d83
SHA512

59a6c529823426576d01ede431c77ec339a1e0622dc5dd8d7dfad7e6d63b7dded3fb19d51e1aa1119bd26fc5485e4dcb166a8dac2ee6f9d2c0e2753b5fcd4657

Score

10^/10

xloader euzn loader rat

Malware Config

Extracted

Family

xloader

Version

2.5

Campaign

euzn

http://www.heser.net/euzn/

Decoy

235296tyc.com

gold12guide.art

baibuaherb.com

weberwines.tax

chezvitoria.com

aidenb.tech

pitchdeckservice.com

surgeryforfdf.xyz

workunvaccinated.com

hrtaro.com

yourotcs.com

sonimultispecialityclinic.com

consultantadvisors.com

pentesting-consulting.com

dantechs.digital

longshifa.online

taweilai.net

imyusuke.com

cashndashfinancial.com

fasiglimt.quest

Signatures

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

Xloader Payload 1 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/1260-155-0x0000000002660000-0x0000000002689000-memory.dmp	xloader

Suspicious use of SetThreadContext 2 IoCs

Processes:

h.exerundll32.exe

description	pid	process	target process
PID 1068 set thread context of 3212	1068	h.exe	Explorer.EXE
PID 1260 set thread context of 3212	1260	rundll32.exe	Explorer.EXE

Modifies registry class 4 IoCs

Processes:

Explorer.EXE

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-257790753-2419383948-818201544-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance\	Explorer.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{4336a54d-038b-4685-ab02-99bb52d3fb8b}\Instance\	Explorer.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{5b934b42-522b-4c34-bbfe-37a3ef7b9c90}\Instance\	Explorer.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{f8278c54-a712-415b-b593-b77a2be0dda9}\Instance\	Explorer.EXE

Suspicious behavior: EnumeratesProcesses 14 IoCs

Processes:

h.exerundll32.exe

pid	process
1068	h.exe
1068	h.exe
1068	h.exe
1068	h.exe
1260	rundll32.exe
1260	rundll32.exe
1260	rundll32.exe
1260	rundll32.exe
1260	rundll32.exe
1260	rundll32.exe
1260	rundll32.exe
1260	rundll32.exe
1260	rundll32.exe
1260	rundll32.exe

Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

h.exerundll32.exe

pid process

1068 h.exe
1068 h.exe
1068 h.exe
1260 rundll32.exe
1260 rundll32.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

h.exerundll32.exe

description pid process

Token: SeDebugPrivilege 1068 h.exe
Token: SeDebugPrivilege 1260 rundll32.exe

description	pid	process
Token: SeDebugPrivilege	1068	h.exe
Token: SeDebugPrivilege	1260	rundll32.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

Explorer.EXErundll32.exe

description	pid	process	target process
PID 3212 wrote to memory of 1260	3212	Explorer.EXE	rundll32.exe
PID 3212 wrote to memory of 1260	3212	Explorer.EXE	rundll32.exe
PID 3212 wrote to memory of 1260	3212	Explorer.EXE	rundll32.exe
PID 1260 wrote to memory of 2376	1260	rundll32.exe	cmd.exe
PID 1260 wrote to memory of 2376	1260	rundll32.exe	cmd.exe
PID 1260 wrote to memory of 2376	1260	rundll32.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:3212

C:\Users\Admin\AppData\Local\Temp\h.exe
"C:\Users\Admin\AppData\Local\Temp\h.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:1068

C:\Windows\SysWOW64\rundll32.exe
"C:\Windows\SysWOW64\rundll32.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1260

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\h.exe"
3⤵
PID:2376

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

memory/1068-146-0x0000000001800000-0x0000000001B56000-memory.dmp

Filesize
3.3MB

Download
memory/1068-147-0x0000000001760000-0x0000000001771000-memory.dmp

Filesize
68KB

Download
memory/1260-153-0x0000000000000000-mapping.dmp

Download
memory/1260-154-0x0000000000040000-0x000000000004E000-memory.dmp

Filesize
56KB

Download
memory/1260-155-0x0000000002660000-0x0000000002689000-memory.dmp

Filesize
164KB

Download
memory/1260-156-0x00000000045B0000-0x0000000004906000-memory.dmp

Filesize
3.3MB

Download
memory/1260-158-0x00000000043D0000-0x0000000004460000-memory.dmp

Filesize
576KB

Download
memory/2376-157-0x0000000000000000-mapping.dmp

Download
memory/3212-148-0x0000000003F80000-0x00000000040E0000-memory.dmp

Filesize
1.4MB

Download
memory/3212-149-0x00000000055E0000-0x00000000055F0000-memory.dmp

Filesize
64KB

Download
memory/3212-150-0x0000000007D60000-0x0000000007D70000-memory.dmp

Filesize
64KB

Download
memory/3212-159-0x00000000053E0000-0x000000000549A000-memory.dmp

Filesize
744KB

Download