xloader | 8ba3166fa29eedff427b62c2d1b05984949a1ac87a34ffa2ab95f4404e96d0e7

General

Target

vbc.exe
Size

790KB
MD5

14f5bfcb44b9511f2cfac6f29ab55898
SHA1

f8dd1f7ec5259168dc98367c3eaa998f08b41a9d
SHA256

8ba3166fa29eedff427b62c2d1b05984949a1ac87a34ffa2ab95f4404e96d0e7
SHA512

0bd4db6d4f45a58b25445726956876d5546bcf73436b0b7c0411ef3d0e683fd91707551a146e775482399896ea6581caaa3d57d3e966a17a451315dcdf1f3b02

Score

10^/10

xloader arh2 evasion loader rat suricata

Malware Config

Extracted

Family

xloader

Version

2.5

Campaign

arh2

Decoy

anniversaryalert.com

kinship.space

buabdullagroup.com

ghostprotectionagency.com

scion-go-getter.com

skindeepapp.com

kysp3.xyz

bonitaspringshomesearch.com

bestdeals2022.online

themarketingstinger.com

chengkayouxuan.com

fendoremi.com

j-stra.com

klingelecn.net

deluxecarepro.com

huanbaodg.com

mes-dents-blanches.com

solutionsemissionsimplifiee.com

abedbashir.tech

good-collection.store

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
Looks for VirtualBox Guest Additions in registry 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

Xloader Payload 2 IoCs

rat

Processes:

resource	yara_rule
behavioral2/memory/3992-137-0x0000000000400000-0x000000000042A000-memory.dmp	xloader
behavioral2/memory/980-144-0x0000000000420000-0x0000000000449000-memory.dmp	xloader

Looks for VMWare Tools registry key 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

Checks BIOS information in registry 2 TTPs 2 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

vbc.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	vbc.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	vbc.exe

Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

Maps connected drives based on registry 3 TTPs 2 IoCs

Disk information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Processes:

vbc.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	vbc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	vbc.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

vbc.exeRMActivate.exeipconfig.exe

description	pid	process	target process
PID 3472 set thread context of 3992	3472	vbc.exe	RMActivate.exe
PID 3992 set thread context of 2728	3992	RMActivate.exe	Explorer.EXE
PID 980 set thread context of 2728	980	ipconfig.exe	Explorer.EXE

Gathers network information 2 TTPs 1 IoCs
Uses commandline utility to view network configuration.

System Information Discovery
T1082

Command-Line Interface
T1059

Processes:

ipconfig.exe

pid process

980 ipconfig.exe

pid	process
980	ipconfig.exe

Suspicious behavior: EnumeratesProcesses 52 IoCs

Processes:

vbc.exeRMActivate.exeipconfig.exe

pid	process
3472	vbc.exe
3472	vbc.exe
3472	vbc.exe
3472	vbc.exe
3472	vbc.exe
3472	vbc.exe
3472	vbc.exe
3472	vbc.exe
3472	vbc.exe
3472	vbc.exe
3992	RMActivate.exe
3992	RMActivate.exe
3992	RMActivate.exe
3992	RMActivate.exe
3472	vbc.exe
3472	vbc.exe
980	ipconfig.exe
980	ipconfig.exe
980	ipconfig.exe
980	ipconfig.exe
980	ipconfig.exe
980	ipconfig.exe
980	ipconfig.exe
980	ipconfig.exe
980	ipconfig.exe
980	ipconfig.exe
980	ipconfig.exe
980	ipconfig.exe
980	ipconfig.exe
980	ipconfig.exe
980	ipconfig.exe
980	ipconfig.exe
980	ipconfig.exe
980	ipconfig.exe
980	ipconfig.exe
980	ipconfig.exe
980	ipconfig.exe
980	ipconfig.exe
980	ipconfig.exe
980	ipconfig.exe
980	ipconfig.exe
980	ipconfig.exe
980	ipconfig.exe
980	ipconfig.exe
980	ipconfig.exe
980	ipconfig.exe
980	ipconfig.exe
980	ipconfig.exe
980	ipconfig.exe
980	ipconfig.exe
980	ipconfig.exe
980	ipconfig.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

2728 Explorer.EXE
Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

RMActivate.exeipconfig.exe

pid process

3992 RMActivate.exe
3992 RMActivate.exe
3992 RMActivate.exe
980 ipconfig.exe
980 ipconfig.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

vbc.exeRMActivate.exeipconfig.exe

description pid process

Token: SeDebugPrivilege 3472 vbc.exe
Token: SeDebugPrivilege 3992 RMActivate.exe
Token: SeDebugPrivilege 980 ipconfig.exe

pid	process
2728	Explorer.EXE

pid	process
3992	RMActivate.exe
3992	RMActivate.exe
3992	RMActivate.exe
980	ipconfig.exe
980	ipconfig.exe

description	pid	process
Token: SeDebugPrivilege	3472	vbc.exe
Token: SeDebugPrivilege	3992	RMActivate.exe
Token: SeDebugPrivilege	980	ipconfig.exe

Suspicious use of WriteProcessMemory 16 IoCs

Processes:

vbc.exeExplorer.EXEipconfig.exe

description	pid	process	target process
PID 3472 wrote to memory of 824	3472	vbc.exe	GamePanel.exe
PID 3472 wrote to memory of 824	3472	vbc.exe	GamePanel.exe
PID 3472 wrote to memory of 824	3472	vbc.exe	GamePanel.exe
PID 3472 wrote to memory of 3992	3472	vbc.exe	RMActivate.exe
PID 3472 wrote to memory of 3992	3472	vbc.exe	RMActivate.exe
PID 3472 wrote to memory of 3992	3472	vbc.exe	RMActivate.exe
PID 3472 wrote to memory of 3992	3472	vbc.exe	RMActivate.exe
PID 3472 wrote to memory of 3992	3472	vbc.exe	RMActivate.exe
PID 3472 wrote to memory of 3992	3472	vbc.exe	RMActivate.exe
PID 3472 wrote to memory of 3992	3472	vbc.exe	RMActivate.exe
PID 2728 wrote to memory of 980	2728	Explorer.EXE	ipconfig.exe
PID 2728 wrote to memory of 980	2728	Explorer.EXE	ipconfig.exe
PID 2728 wrote to memory of 980	2728	Explorer.EXE	ipconfig.exe
PID 980 wrote to memory of 4572	980	ipconfig.exe	cmd.exe
PID 980 wrote to memory of 4572	980	ipconfig.exe	cmd.exe
PID 980 wrote to memory of 4572	980	ipconfig.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:2728

C:\Users\Admin\AppData\Local\Temp\vbc.exe
"C:\Users\Admin\AppData\Local\Temp\vbc.exe"
2⤵
- Checks BIOS information in registry
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3472

C:\Windows\SysWOW64\GamePanel.exe
"C:\Windows\SysWOW64\GamePanel.exe"
3⤵
PID:824

C:\Windows\SysWOW64\RMActivate.exe
"C:\Windows\SysWOW64\RMActivate.exe"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:3992

C:\Windows\SysWOW64\ipconfig.exe
"C:\Windows\SysWOW64\ipconfig.exe"
2⤵
- Suspicious use of SetThreadContext
- Gathers network information
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:980

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Windows\SysWOW64\RMActivate.exe"
3⤵
PID:4572

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Command-Line Interface

Scripting

Persistence

Privilege Escalation

Defense Evasion

Scripting

1

T1064

Virtualization/Sandbox Evasion

2

T1497

Credential Access

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

3

T1082

Virtualization/Sandbox Evasion

2

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/824-135-0x0000000000000000-mapping.dmp

Download
memory/980-147-0x0000000000AD0000-0x0000000000B60000-memory.dmp

Filesize
576KB

Download
memory/980-146-0x0000000000D10000-0x000000000105A000-memory.dmp

Filesize
3.3MB

Download
memory/980-143-0x0000000000790000-0x000000000079B000-memory.dmp

Filesize
44KB

Download
memory/980-144-0x0000000000420000-0x0000000000449000-memory.dmp

Filesize
164KB

Download
memory/980-142-0x0000000000000000-mapping.dmp

Download
memory/2728-141-0x0000000008490000-0x00000000085E6000-memory.dmp

Filesize
1.3MB

Download
memory/2728-148-0x00000000086F0000-0x00000000087CD000-memory.dmp

Filesize
884KB

Download
memory/3472-134-0x0000000007470000-0x00000000074D6000-memory.dmp

Filesize
408KB

Download
memory/3472-130-0x0000000000DD0000-0x0000000000E9C000-memory.dmp

Filesize
816KB

Download
memory/3472-133-0x0000000005910000-0x00000000059AC000-memory.dmp

Filesize
624KB

Download
memory/3472-132-0x00000000033F0000-0x0000000003482000-memory.dmp

Filesize
584KB

Download
memory/3472-131-0x0000000005EC0000-0x0000000006464000-memory.dmp

Filesize
5.6MB

Download
memory/3992-140-0x0000000001630000-0x0000000001641000-memory.dmp

Filesize
68KB

Download
memory/3992-138-0x00000000012E0000-0x000000000162A000-memory.dmp

Filesize
3.3MB

Download
memory/3992-137-0x0000000000400000-0x000000000042A000-memory.dmp

Filesize
168KB

Download
memory/3992-136-0x0000000000000000-mapping.dmp

Download
memory/4572-145-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads