xloader | 4e18d364c4fa2db105557cf8105e5e3d77c9d7a06590b4f897051f99014da5be

General

Target

vbc.exe
Size

255KB
MD5

de8a80136d8b6c2002ba8473bda2a617
SHA1

6ccca366fd276d0bff3197b02bfb8c192fe75cb3
SHA256

4e18d364c4fa2db105557cf8105e5e3d77c9d7a06590b4f897051f99014da5be
SHA512

d93ca922a818f387312a317ef84e22d88ac9c091a8ddb85c742983fa37801614681d22b842aacd66f6d66621700a0e4eeacc632428303f8db6c7bd0f8d607875

Score

10^/10

xloader b6a4 loader rat suricata

Malware Config

Extracted

Family

xloader

Version

2.3

Campaign

b6a4

C2

http://www.helpmovingandstorage.com/b6a4/

Decoy

gr2future.com

asteroid.finance

skoba-plast.com

rnerfrfw5z3ki.net

thesmartroadtoretirement.com

avisdrummondhomes.com

banban365.net

profesyonelkampcadiri.net

royalloanhs.com

yulujy.com

xn--naqejahan-n3b.com

msalee.net

dollyvee.com

albertagamehawkersclub.com

cbspecialists.com

findingforeverrealty.com

mrtireshop.com

wadamasanari.com

growtechinfo.com

qipai039.com

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 2 IoCs

rat

Processes:

resource	yara_rule
behavioral2/memory/804-117-0x0000000000400000-0x0000000000429000-memory.dmp	xloader
behavioral2/memory/3164-123-0x0000000000970000-0x0000000000999000-memory.dmp	xloader

Loads dropped DLL 1 IoCs

Processes:

vbc.exe

pid process

4076 vbc.exe
Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

pid	process
4076	vbc.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

vbc.exevbc.exesvchost.exe

description	pid	process	target process
PID 4076 set thread context of 804	4076	vbc.exe	vbc.exe
PID 804 set thread context of 2304	804	vbc.exe	Explorer.EXE
PID 3164 set thread context of 2304	3164	svchost.exe	Explorer.EXE

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Modifies registry class 2 IoCs

Processes:

Explorer.EXE

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{4336a54d-038b-4685-ab02-99bb52d3fb8b}\Instance	Explorer.EXE
Key created	\REGISTRY\USER\S-1-5-21-2559286294-2439613352-4032193287-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance	Explorer.EXE

Suspicious behavior: EnumeratesProcesses 62 IoCs

Processes:

vbc.exesvchost.exe

pid	process
804	vbc.exe
804	vbc.exe
804	vbc.exe
804	vbc.exe
3164	svchost.exe
3164	svchost.exe
3164	svchost.exe
3164	svchost.exe
3164	svchost.exe
3164	svchost.exe
3164	svchost.exe
3164	svchost.exe
3164	svchost.exe
3164	svchost.exe
3164	svchost.exe
3164	svchost.exe
3164	svchost.exe
3164	svchost.exe
3164	svchost.exe
3164	svchost.exe
3164	svchost.exe
3164	svchost.exe
3164	svchost.exe
3164	svchost.exe
3164	svchost.exe
3164	svchost.exe
3164	svchost.exe
3164	svchost.exe
3164	svchost.exe
3164	svchost.exe
3164	svchost.exe
3164	svchost.exe
3164	svchost.exe
3164	svchost.exe
3164	svchost.exe
3164	svchost.exe
3164	svchost.exe
3164	svchost.exe
3164	svchost.exe
3164	svchost.exe
3164	svchost.exe
3164	svchost.exe
3164	svchost.exe
3164	svchost.exe
3164	svchost.exe
3164	svchost.exe
3164	svchost.exe
3164	svchost.exe
3164	svchost.exe
3164	svchost.exe
3164	svchost.exe
3164	svchost.exe
3164	svchost.exe
3164	svchost.exe
3164	svchost.exe
3164	svchost.exe
3164	svchost.exe
3164	svchost.exe
3164	svchost.exe
3164	svchost.exe
3164	svchost.exe
3164	svchost.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

2304 Explorer.EXE
Suspicious behavior: MapViewOfSection 6 IoCs

Processes:

vbc.exevbc.exesvchost.exe

pid process

4076 vbc.exe
804 vbc.exe
804 vbc.exe
804 vbc.exe
3164 svchost.exe
3164 svchost.exe

pid	process
4076	vbc.exe
804	vbc.exe
804	vbc.exe
804	vbc.exe
3164	svchost.exe
3164	svchost.exe

Suspicious use of AdjustPrivilegeToken 14 IoCs

Processes:

vbc.exesvchost.exeExplorer.EXE

description	pid	process
Token: SeDebugPrivilege	804	vbc.exe
Token: SeDebugPrivilege	3164	svchost.exe
Token: SeShutdownPrivilege	2304	Explorer.EXE
Token: SeCreatePagefilePrivilege	2304	Explorer.EXE
Token: SeShutdownPrivilege	2304	Explorer.EXE
Token: SeCreatePagefilePrivilege	2304	Explorer.EXE
Token: SeShutdownPrivilege	2304	Explorer.EXE
Token: SeCreatePagefilePrivilege	2304	Explorer.EXE
Token: SeShutdownPrivilege	2304	Explorer.EXE
Token: SeCreatePagefilePrivilege	2304	Explorer.EXE
Token: SeShutdownPrivilege	2304	Explorer.EXE
Token: SeCreatePagefilePrivilege	2304	Explorer.EXE
Token: SeShutdownPrivilege	2304	Explorer.EXE
Token: SeCreatePagefilePrivilege	2304	Explorer.EXE

Suspicious use of FindShellTrayWindow 9 IoCs

Processes:

Explorer.EXE

pid	process
2304	Explorer.EXE
2304	Explorer.EXE
2304	Explorer.EXE
2304	Explorer.EXE
2304	Explorer.EXE
2304	Explorer.EXE
2304	Explorer.EXE
2304	Explorer.EXE
2304	Explorer.EXE

Suspicious use of SendNotifyMessage 1 IoCs

Processes:

Explorer.EXE

pid process

2304 Explorer.EXE

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

vbc.exeExplorer.EXE

description	pid	process	target process
PID 4076 wrote to memory of 804	4076	vbc.exe	vbc.exe
PID 4076 wrote to memory of 804	4076	vbc.exe	vbc.exe
PID 4076 wrote to memory of 804	4076	vbc.exe	vbc.exe
PID 4076 wrote to memory of 804	4076	vbc.exe	vbc.exe
PID 2304 wrote to memory of 3164	2304	Explorer.EXE	svchost.exe
PID 2304 wrote to memory of 3164	2304	Explorer.EXE	svchost.exe
PID 2304 wrote to memory of 3164	2304	Explorer.EXE	svchost.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Modifies registry class
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:2304

C:\Users\Admin\AppData\Local\Temp\vbc.exe
"C:\Users\Admin\AppData\Local\Temp\vbc.exe"
2⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:4076

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:804

C:\Windows\SysWOW64\svchost.exe
"C:\Windows\SysWOW64\svchost.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:3164

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

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

\Users\Admin\AppData\Local\Temp\nseBB81.tmp\tkxaz.dll
MD5
220b53f6a42f8f23f16378c8330763d1

SHA1
02078dc5f0d573ba4c7bb24f69c7218f31987be6

SHA256
3c470a8a1732a7e3e06cd561f5566c192f851e763b3694d84f546fe8ba379637

SHA512
6f442f207deaabb292851abae4d7c372504aa61a1ccfdce6d6f5b5d9d00fff681ff3a458731e47d227404a9bbab6f7fc61493a98075fac33db89766064cbb6f2

Download Submit
memory/804-116-0x000000000041D0B0-mapping.dmp

Download
memory/804-118-0x0000000000980000-0x0000000000CA0000-memory.dmp

Filesize
3.1MB

Download
memory/804-117-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/804-119-0x00000000008B0000-0x00000000008C0000-memory.dmp

Filesize
64KB

Download
memory/2304-120-0x00000000072D0000-0x0000000007420000-memory.dmp

Filesize
1.3MB

Download
memory/2304-126-0x0000000002E20000-0x0000000002F0C000-memory.dmp

Filesize
944KB

Download
memory/3164-121-0x0000000000000000-mapping.dmp

Download
memory/3164-123-0x0000000000970000-0x0000000000999000-memory.dmp

Filesize
164KB

Download
memory/3164-122-0x0000000001120000-0x000000000112C000-memory.dmp

Filesize
48KB

Download
memory/3164-124-0x0000000003620000-0x0000000003940000-memory.dmp

Filesize
3.1MB

Download
memory/3164-125-0x0000000003130000-0x00000000031BF000-memory.dmp

Filesize
572KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads