xloader | d0c85ba5e6d88e1e0b5f068f125829b4e224b90be2488f2c21317447dc51fb9e

General

Target

vbc.exe
Size

757KB
MD5

1f65d7826fbcc2d6c50f6c493c901588
SHA1

4290f6b300595e807e8cacd5ff172b0a0f37c845
SHA256

d0c85ba5e6d88e1e0b5f068f125829b4e224b90be2488f2c21317447dc51fb9e
SHA512

e3c15d0229433441300b4e129748c10e966de22c926d641b665a91caf7c371a390004abc24d953a80887be4a791514e1670cb0e8723d6a19ffa5210cd9124f5a

Score

10^/10

xloader v4qp loader persistence rat spyware stealer suricata

Malware Config

Extracted

Family

xloader

Version

2.9

Campaign

v4qp

Decoy

je1XQKU1LfJPVLk=

nvf41a7FsTLs6uB/g+CR

U7mryF6DctZn6GEjr9Bm4g==

1SONGrPdh7wGEOXp3g==

2xX859r7qOFq7GYkr9Bm4g==

IYtzVUx0Oo0HmZawLQAARDvBf4dL

NH3iuBPNSzZTvpw/4KaG

rDehfiqIPbdMBS8G1g==

xhb2uJ0eBwo7k3djqxh60xoNt4VoeQ==

AFtKux3JgPGRkx3xUsciR6piSg==

m+3VoJadWcBvOAPpzKUNPoAxyplS

1DWKULdka3mxIKhEqGxQr7gxyplS

DGlFGBqWi5CtrCX9alyTuPzq

muvVM4slyTfxORwAZisVksCM78aSEVo=

D3biNgUbyg9E5pl+

/+1QLPssvl/Xxg==

I4lzTjaAcc1iBS8G1g==

wSwc4MmbShojhlZCrniTuPzq

jN5YO6ZXSfJPVLk=

4TUS4+ANuqHCRTM9sniTuPzq

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

Processes:

resource	yara_rule
behavioral1/memory/1744-62-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral1/memory/1744-63-0x000000000041F6E0-mapping.dmp	xloader
behavioral1/memory/1744-65-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral1/memory/1744-73-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral1/memory/912-77-0x00000000001D0000-0x00000000001FC000-memory.dmp	xloader
behavioral1/memory/912-80-0x00000000001D0000-0x00000000001FC000-memory.dmp	xloader

Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.

Query Registry
T1012

System Information Discovery
T1082

Processes:

vbc.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Control Panel\International\Geo\Nation vbc.exe
Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

1196 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
Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Control Panel\International\Geo\Nation	vbc.exe

pid	process
1196	cmd.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

wscript.exe

description	ioc	process
Key created	\Registry\Machine\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run	wscript.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\J8ALG6O0V8 = "C:\\Program Files (x86)\\G-z_\\mscz7d.exe"	wscript.exe

Suspicious use of SetThreadContext 4 IoCs

Processes:

vbc.exevbc.exewscript.exe

description	pid	process	target process
PID 1336 set thread context of 1744	1336	vbc.exe	vbc.exe
PID 1744 set thread context of 1400	1744	vbc.exe	Explorer.EXE
PID 1744 set thread context of 1400	1744	vbc.exe	Explorer.EXE
PID 912 set thread context of 1400	912	wscript.exe	Explorer.EXE

Drops file in Program Files directory 1 IoCs

Processes:

wscript.exe

description ioc process

File opened for modification C:\Program Files (x86)\G-z_\mscz7d.exe wscript.exe

description	ioc	process
File opened for modification	C:\Program Files (x86)\G-z_\mscz7d.exe	wscript.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

wscript.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-1819626980-2277161760-1023733287-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	wscript.exe

Suspicious behavior: EnumeratesProcesses 21 IoCs

Processes:

vbc.exevbc.exewscript.exe

pid	process
1336	vbc.exe
1744	vbc.exe
1744	vbc.exe
1744	vbc.exe
912	wscript.exe
912	wscript.exe
912	wscript.exe
912	wscript.exe
912	wscript.exe
912	wscript.exe
912	wscript.exe
912	wscript.exe
912	wscript.exe
912	wscript.exe
912	wscript.exe
912	wscript.exe
912	wscript.exe
912	wscript.exe
912	wscript.exe
912	wscript.exe
912	wscript.exe

Suspicious behavior: MapViewOfSection 8 IoCs

Processes:

vbc.exewscript.exe

pid process

1744 vbc.exe
1744 vbc.exe
1744 vbc.exe
1744 vbc.exe
912 wscript.exe
912 wscript.exe
912 wscript.exe
912 wscript.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

vbc.exevbc.exewscript.exe

description pid process

Token: SeDebugPrivilege 1336 vbc.exe
Token: SeDebugPrivilege 1744 vbc.exe
Token: SeDebugPrivilege 912 wscript.exe
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

Explorer.EXE

pid process

1400 Explorer.EXE
1400 Explorer.EXE
Suspicious use of SendNotifyMessage 2 IoCs

Processes:

Explorer.EXE

pid process

1400 Explorer.EXE
1400 Explorer.EXE

pid	process
1744	vbc.exe
1744	vbc.exe
1744	vbc.exe
1744	vbc.exe
912	wscript.exe
912	wscript.exe
912	wscript.exe
912	wscript.exe

description	pid	process
Token: SeDebugPrivilege	1336	vbc.exe
Token: SeDebugPrivilege	1744	vbc.exe
Token: SeDebugPrivilege	912	wscript.exe

pid	process
1400	Explorer.EXE
1400	Explorer.EXE

pid	process
1400	Explorer.EXE
1400	Explorer.EXE

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

vbc.exeExplorer.EXEwscript.exe

description	pid	process	target process
PID 1336 wrote to memory of 1744	1336	vbc.exe	vbc.exe
PID 1336 wrote to memory of 1744	1336	vbc.exe	vbc.exe
PID 1336 wrote to memory of 1744	1336	vbc.exe	vbc.exe
PID 1336 wrote to memory of 1744	1336	vbc.exe	vbc.exe
PID 1336 wrote to memory of 1744	1336	vbc.exe	vbc.exe
PID 1336 wrote to memory of 1744	1336	vbc.exe	vbc.exe
PID 1336 wrote to memory of 1744	1336	vbc.exe	vbc.exe
PID 1400 wrote to memory of 912	1400	Explorer.EXE	wscript.exe
PID 1400 wrote to memory of 912	1400	Explorer.EXE	wscript.exe
PID 1400 wrote to memory of 912	1400	Explorer.EXE	wscript.exe
PID 1400 wrote to memory of 912	1400	Explorer.EXE	wscript.exe
PID 912 wrote to memory of 1196	912	wscript.exe	cmd.exe
PID 912 wrote to memory of 1196	912	wscript.exe	cmd.exe
PID 912 wrote to memory of 1196	912	wscript.exe	cmd.exe
PID 912 wrote to memory of 1196	912	wscript.exe	cmd.exe
PID 912 wrote to memory of 1936	912	wscript.exe	Firefox.exe
PID 912 wrote to memory of 1936	912	wscript.exe	Firefox.exe
PID 912 wrote to memory of 1936	912	wscript.exe	Firefox.exe
PID 912 wrote to memory of 1936	912	wscript.exe	Firefox.exe
PID 912 wrote to memory of 1936	912	wscript.exe	Firefox.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1400

C:\Users\Admin\AppData\Local\Temp\vbc.exe
"C:\Users\Admin\AppData\Local\Temp\vbc.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1336

C:\Users\Admin\AppData\Local\Temp\vbc.exe
"{path}"
3⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:1744

C:\Windows\SysWOW64\wscript.exe
"C:\Windows\SysWOW64\wscript.exe"
2⤵
- Adds 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
PID:912

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\vbc.exe"
3⤵
- Deletes itself
PID:1196

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:1936

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scripting

1

T1064

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Scripting

1

T1064

Modify Registry

2

T1112

Credential Access

Credentials in Files

1

T1081

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Exfiltration

Command and Control

Impact

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Downloads

memory/912-80-0x00000000001D0000-0x00000000001FC000-memory.dmp

Filesize
176KB

Download
memory/912-78-0x0000000001E30000-0x0000000001EC0000-memory.dmp

Filesize
576KB

Download
memory/912-77-0x00000000001D0000-0x00000000001FC000-memory.dmp

Filesize
176KB

Download
memory/912-76-0x0000000002100000-0x0000000002403000-memory.dmp

Filesize
3.0MB

Download
memory/912-74-0x0000000000870000-0x0000000000896000-memory.dmp

Filesize
152KB

Download
memory/912-72-0x0000000000000000-mapping.dmp

Download
memory/1196-75-0x0000000000000000-mapping.dmp

Download
memory/1336-54-0x00000000000E0000-0x00000000001A4000-memory.dmp

Filesize
784KB

Download
memory/1336-55-0x0000000074B51000-0x0000000074B53000-memory.dmp

Filesize
8KB

Download
memory/1336-56-0x00000000002E0000-0x00000000002EA000-memory.dmp

Filesize
40KB

Download
memory/1336-57-0x00000000055E0000-0x0000000005662000-memory.dmp

Filesize
520KB

Download
memory/1336-58-0x0000000000610000-0x0000000000642000-memory.dmp

Filesize
200KB

Download
memory/1400-68-0x00000000063F0000-0x000000000653D000-memory.dmp

Filesize
1.3MB

Download
memory/1400-71-0x0000000006A50000-0x0000000006B7E000-memory.dmp

Filesize
1.2MB

Download
memory/1400-79-0x0000000003BF0000-0x0000000003CDC000-memory.dmp

Filesize
944KB

Download
memory/1400-81-0x0000000003BF0000-0x0000000003CDC000-memory.dmp

Filesize
944KB

Download
memory/1744-70-0x00000000002B0000-0x00000000002C1000-memory.dmp

Filesize
68KB

Download
memory/1744-73-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1744-67-0x0000000000250000-0x0000000000261000-memory.dmp

Filesize
68KB

Download
memory/1744-66-0x0000000000A40000-0x0000000000D43000-memory.dmp

Filesize
3.0MB

Download
memory/1744-65-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1744-63-0x000000000041F6E0-mapping.dmp

Download
memory/1744-62-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1744-60-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1744-59-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads