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 5 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/1636-62-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral1/memory/1636-63-0x000000000041F6E0-mapping.dmp	xloader
behavioral1/memory/1636-65-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral1/memory/1236-72-0x0000000000080000-0x00000000000AC000-memory.dmp	xloader
behavioral1/memory/1236-76-0x0000000000080000-0x00000000000AC000-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-1-5-21-1083475884-596052423-1669053738-1000\Control Panel\International\Geo\Nation vbc.exe
Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

1076 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-1-5-21-1083475884-596052423-1669053738-1000\Control Panel\International\Geo\Nation	vbc.exe

pid	process
1076	cmd.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

cmd.exe

description	ioc	process
Key created	\Registry\Machine\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run	cmd.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\TRXXVNUHW8 = "C:\\Program Files (x86)\\Kqhlh\\chkdskonzxh6-.exe"	cmd.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

vbc.exevbc.execmd.exe

description	pid	process	target process
PID 1720 set thread context of 1636	1720	vbc.exe	vbc.exe
PID 1636 set thread context of 1312	1636	vbc.exe	Explorer.EXE
PID 1236 set thread context of 1312	1236	cmd.exe	Explorer.EXE

Drops file in Program Files directory 1 IoCs

Processes:

cmd.exe

description ioc process

File opened for modification C:\Program Files (x86)\Kqhlh\chkdskonzxh6-.exe cmd.exe

description	ioc	process
File opened for modification	C:\Program Files (x86)\Kqhlh\chkdskonzxh6-.exe	cmd.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

cmd.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-1083475884-596052423-1669053738-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	cmd.exe

Suspicious behavior: EnumeratesProcesses 22 IoCs

Processes:

vbc.exevbc.execmd.exe

pid	process
1720	vbc.exe
1636	vbc.exe
1636	vbc.exe
1236	cmd.exe
1236	cmd.exe
1236	cmd.exe
1236	cmd.exe
1236	cmd.exe
1236	cmd.exe
1236	cmd.exe
1236	cmd.exe
1236	cmd.exe
1236	cmd.exe
1236	cmd.exe
1236	cmd.exe
1236	cmd.exe
1236	cmd.exe
1236	cmd.exe
1236	cmd.exe
1236	cmd.exe
1236	cmd.exe
1236	cmd.exe

Suspicious behavior: MapViewOfSection 7 IoCs

Processes:

vbc.execmd.exe

pid process

1636 vbc.exe
1636 vbc.exe
1636 vbc.exe
1236 cmd.exe
1236 cmd.exe
1236 cmd.exe
1236 cmd.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

vbc.exevbc.execmd.exe

description pid process

Token: SeDebugPrivilege 1720 vbc.exe
Token: SeDebugPrivilege 1636 vbc.exe
Token: SeDebugPrivilege 1236 cmd.exe
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

Explorer.EXE

pid process

1312 Explorer.EXE
1312 Explorer.EXE
Suspicious use of SendNotifyMessage 2 IoCs

Processes:

Explorer.EXE

pid process

1312 Explorer.EXE
1312 Explorer.EXE

pid	process
1636	vbc.exe
1636	vbc.exe
1636	vbc.exe
1236	cmd.exe
1236	cmd.exe
1236	cmd.exe
1236	cmd.exe

description	pid	process
Token: SeDebugPrivilege	1720	vbc.exe
Token: SeDebugPrivilege	1636	vbc.exe
Token: SeDebugPrivilege	1236	cmd.exe

pid	process
1312	Explorer.EXE
1312	Explorer.EXE

pid	process
1312	Explorer.EXE
1312	Explorer.EXE

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

vbc.exeExplorer.EXEcmd.exe

description	pid	process	target process
PID 1720 wrote to memory of 1636	1720	vbc.exe	vbc.exe
PID 1720 wrote to memory of 1636	1720	vbc.exe	vbc.exe
PID 1720 wrote to memory of 1636	1720	vbc.exe	vbc.exe
PID 1720 wrote to memory of 1636	1720	vbc.exe	vbc.exe
PID 1720 wrote to memory of 1636	1720	vbc.exe	vbc.exe
PID 1720 wrote to memory of 1636	1720	vbc.exe	vbc.exe
PID 1720 wrote to memory of 1636	1720	vbc.exe	vbc.exe
PID 1312 wrote to memory of 1236	1312	Explorer.EXE	cmd.exe
PID 1312 wrote to memory of 1236	1312	Explorer.EXE	cmd.exe
PID 1312 wrote to memory of 1236	1312	Explorer.EXE	cmd.exe
PID 1312 wrote to memory of 1236	1312	Explorer.EXE	cmd.exe
PID 1236 wrote to memory of 1076	1236	cmd.exe	cmd.exe
PID 1236 wrote to memory of 1076	1236	cmd.exe	cmd.exe
PID 1236 wrote to memory of 1076	1236	cmd.exe	cmd.exe
PID 1236 wrote to memory of 1076	1236	cmd.exe	cmd.exe
PID 1236 wrote to memory of 468	1236	cmd.exe	Firefox.exe
PID 1236 wrote to memory of 468	1236	cmd.exe	Firefox.exe
PID 1236 wrote to memory of 468	1236	cmd.exe	Firefox.exe
PID 1236 wrote to memory of 468	1236	cmd.exe	Firefox.exe
PID 1236 wrote to memory of 468	1236	cmd.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:1312

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:1720

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:1636

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\SysWOW64\cmd.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:1236

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\vbc.exe"
3⤵
- Deletes itself
PID:1076

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:468

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/1076-70-0x0000000000000000-mapping.dmp

Download
memory/1236-76-0x0000000000080000-0x00000000000AC000-memory.dmp

Filesize
176KB

Download
memory/1236-74-0x0000000001EF0000-0x0000000001F80000-memory.dmp

Filesize
576KB

Download
memory/1236-73-0x0000000002070000-0x0000000002373000-memory.dmp

Filesize
3.0MB

Download
memory/1236-72-0x0000000000080000-0x00000000000AC000-memory.dmp

Filesize
176KB

Download
memory/1236-71-0x000000004A2D0000-0x000000004A31C000-memory.dmp

Filesize
304KB

Download
memory/1236-69-0x0000000000000000-mapping.dmp

Download
memory/1312-68-0x0000000004C70000-0x0000000004DBC000-memory.dmp

Filesize
1.3MB

Download
memory/1312-77-0x0000000004A30000-0x0000000004AF3000-memory.dmp

Filesize
780KB

Download
memory/1312-75-0x0000000004A30000-0x0000000004AF3000-memory.dmp

Filesize
780KB

Download
memory/1636-59-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1636-67-0x0000000000140000-0x0000000000151000-memory.dmp

Filesize
68KB

Download
memory/1636-66-0x0000000000910000-0x0000000000C13000-memory.dmp

Filesize
3.0MB

Download
memory/1636-65-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1636-63-0x000000000041F6E0-mapping.dmp

Download
memory/1636-62-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1636-60-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1720-54-0x0000000001370000-0x0000000001434000-memory.dmp

Filesize
784KB

Download
memory/1720-58-0x0000000000940000-0x0000000000972000-memory.dmp

Filesize
200KB

Download
memory/1720-57-0x0000000005380000-0x0000000005402000-memory.dmp

Filesize
520KB

Download
memory/1720-56-0x00000000002F0000-0x00000000002FA000-memory.dmp

Filesize
40KB

Download
memory/1720-55-0x0000000075711000-0x0000000075713000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads