xloader | 9508c04b4c1dd578c8c3b8597a68bb73548b107edcbb37f13909a18d85f78b3a

General

Target

vbc.exe
Size

380KB
MD5

2953a7fb129cbb29a3f913e5e1f01d1b
SHA1

88cc356cf7566c6c5fff68821023c97f4c79d151
SHA256

9508c04b4c1dd578c8c3b8597a68bb73548b107edcbb37f13909a18d85f78b3a
SHA512

ae6da55999c04bf051744147f8caabf283b1b12f88385b1279a1109e72c4589be015e7f3338df2a4f9a673e332d156eb801fd74baeb6ba6b0192869303e9bcdc

Score

10^/10

xloader euzn loader rat

Malware Config

Extracted

Family

xloader

Version

2.5

Campaign

euzn

C2

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 3 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/1804-61-0x0000000000400000-0x0000000000429000-memory.dmp	xloader
behavioral1/memory/1804-62-0x000000000041D420-mapping.dmp	xloader
behavioral1/memory/1924-70-0x00000000000D0000-0x00000000000F9000-memory.dmp	xloader

Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

756 cmd.exe
Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

pid	process
756	cmd.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

vbc.exevbc.exewuapp.exe

description	pid	process	target process
PID 764 set thread context of 1804	764	vbc.exe	vbc.exe
PID 1804 set thread context of 1408	1804	vbc.exe	Explorer.EXE
PID 1924 set thread context of 1408	1924	wuapp.exe	Explorer.EXE

Suspicious behavior: EnumeratesProcesses 23 IoCs

Processes:

vbc.exewuapp.exe

pid	process
1804	vbc.exe
1804	vbc.exe
1924	wuapp.exe
1924	wuapp.exe
1924	wuapp.exe
1924	wuapp.exe
1924	wuapp.exe
1924	wuapp.exe
1924	wuapp.exe
1924	wuapp.exe
1924	wuapp.exe
1924	wuapp.exe
1924	wuapp.exe
1924	wuapp.exe
1924	wuapp.exe
1924	wuapp.exe
1924	wuapp.exe
1924	wuapp.exe
1924	wuapp.exe
1924	wuapp.exe
1924	wuapp.exe
1924	wuapp.exe
1924	wuapp.exe

Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

vbc.exewuapp.exe

pid process

1804 vbc.exe
1804 vbc.exe
1804 vbc.exe
1924 wuapp.exe
1924 wuapp.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

vbc.exewuapp.exe

description pid process

Token: SeDebugPrivilege 1804 vbc.exe
Token: SeDebugPrivilege 1924 wuapp.exe
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

Explorer.EXE

pid process

1408 Explorer.EXE
1408 Explorer.EXE
Suspicious use of SendNotifyMessage 2 IoCs

Processes:

Explorer.EXE

pid process

1408 Explorer.EXE
1408 Explorer.EXE

description	pid	process
Token: SeDebugPrivilege	1804	vbc.exe
Token: SeDebugPrivilege	1924	wuapp.exe

pid	process
1408	Explorer.EXE
1408	Explorer.EXE

pid	process
1408	Explorer.EXE
1408	Explorer.EXE

Suspicious use of WriteProcessMemory 18 IoCs

Processes:

vbc.exeExplorer.EXEwuapp.exe

description	pid	process	target process
PID 764 wrote to memory of 1804	764	vbc.exe	vbc.exe
PID 764 wrote to memory of 1804	764	vbc.exe	vbc.exe
PID 764 wrote to memory of 1804	764	vbc.exe	vbc.exe
PID 764 wrote to memory of 1804	764	vbc.exe	vbc.exe
PID 764 wrote to memory of 1804	764	vbc.exe	vbc.exe
PID 764 wrote to memory of 1804	764	vbc.exe	vbc.exe
PID 764 wrote to memory of 1804	764	vbc.exe	vbc.exe
PID 1408 wrote to memory of 1924	1408	Explorer.EXE	wuapp.exe
PID 1408 wrote to memory of 1924	1408	Explorer.EXE	wuapp.exe
PID 1408 wrote to memory of 1924	1408	Explorer.EXE	wuapp.exe
PID 1408 wrote to memory of 1924	1408	Explorer.EXE	wuapp.exe
PID 1408 wrote to memory of 1924	1408	Explorer.EXE	wuapp.exe
PID 1408 wrote to memory of 1924	1408	Explorer.EXE	wuapp.exe
PID 1408 wrote to memory of 1924	1408	Explorer.EXE	wuapp.exe
PID 1924 wrote to memory of 756	1924	wuapp.exe	cmd.exe
PID 1924 wrote to memory of 756	1924	wuapp.exe	cmd.exe
PID 1924 wrote to memory of 756	1924	wuapp.exe	cmd.exe
PID 1924 wrote to memory of 756	1924	wuapp.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1408

C:\Users\Admin\AppData\Local\Temp\vbc.exe
"C:\Users\Admin\AppData\Local\Temp\vbc.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:764

C:\Users\Admin\AppData\Local\Temp\vbc.exe
"C:\Users\Admin\AppData\Local\Temp\vbc.exe"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:1804

C:\Windows\SysWOW64\wuapp.exe
"C:\Windows\SysWOW64\wuapp.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1924

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\vbc.exe"
3⤵
- Deletes itself
PID:756

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scripting

1

T1064

Persistence

Privilege Escalation

Defense Evasion

Scripting

1

T1064

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/756-68-0x0000000000000000-mapping.dmp

Download
memory/764-56-0x0000000004950000-0x0000000004951000-memory.dmp

Filesize
4KB

Download
memory/764-57-0x00000000006D0000-0x00000000006D6000-memory.dmp

Filesize
24KB

Download
memory/764-58-0x00000000020B0000-0x00000000020FB000-memory.dmp

Filesize
300KB

Download
memory/764-54-0x0000000000030000-0x0000000000031000-memory.dmp

Filesize
4KB

Download
memory/1408-66-0x0000000007540000-0x00000000076DB000-memory.dmp

Filesize
1.6MB

Download
memory/1408-73-0x0000000009700000-0x0000000009890000-memory.dmp

Filesize
1.6MB

Download
memory/1804-59-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/1804-64-0x0000000000930000-0x0000000000C33000-memory.dmp

Filesize
3.0MB

Download
memory/1804-65-0x00000000002F0000-0x0000000000301000-memory.dmp

Filesize
68KB

Download
memory/1804-62-0x000000000041D420-mapping.dmp

Download
memory/1804-61-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/1804-60-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/1924-67-0x0000000000000000-mapping.dmp

Download
memory/1924-70-0x00000000000D0000-0x00000000000F9000-memory.dmp

Filesize
164KB

Download
memory/1924-71-0x0000000000B40000-0x0000000000E43000-memory.dmp

Filesize
3.0MB

Download
memory/1924-69-0x0000000000EC0000-0x0000000000ECB000-memory.dmp

Filesize
44KB

Download
memory/1924-72-0x0000000000430000-0x00000000004C0000-memory.dmp

Filesize
576KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

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Downloads