xloader | c1657f01ccef85f3f46740a96704bc5dccfb4cf8fc9ac09abcfd7aa6660448f7

General

Target

vbc.exe
Size

356KB
MD5

8b7820fd7d45dcd564fb92db1ebe9295
SHA1

c383a24a84143123f120f754bb0877b91628ff5b
SHA256

c1657f01ccef85f3f46740a96704bc5dccfb4cf8fc9ac09abcfd7aa6660448f7
SHA512

96ffc3d1d785035b47342b700d2930cf4daee597d02e97310a53be8baa819b403dbd96e82470fa0483f5bb442728c4e0eb352ebca0945070a49013451c441590

Score

10^/10

xloader ea0r loader rat suricata

Malware Config

Extracted

Family

xloader

Version

2.5

Campaign

ea0r

C2

http://www.asiapubz-hk.com/ea0r/

Decoy

lionheartcreativestudios.com

konzertmanagement.com

blackpanther.online

broychim-int.com

takut18.com

txstarsolar.com

herdsherpa.com

igorshestakov.com

shinesbox.com

reflectpkljlt.xyz

oiltoolshub.com

viralmoneychallenge.com

changingalphastrategies.com

mecitiris.com

rdadmin.online

miniambiente.com

kominarcine.com

pino-almond.com

heihit.xyz

junqi888.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 4 IoCs

rat

Processes:

resource	yara_rule
behavioral2/memory/296-119-0x0000000000400000-0x0000000000429000-memory.dmp	xloader
behavioral2/memory/296-120-0x000000000041D410-mapping.dmp	xloader
behavioral2/memory/768-127-0x0000000000A80000-0x0000000000AA9000-memory.dmp	xloader
behavioral2/memory/768-129-0x0000000000AE0000-0x0000000000C2A000-memory.dmp	xloader

Loads dropped DLL 1 IoCs

Processes:

vbc.exe

pid process

2684 vbc.exe
Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

pid	process
2684	vbc.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

vbc.exevbc.exeNETSTAT.EXE

description	pid	process	target process
PID 2684 set thread context of 296	2684	vbc.exe	vbc.exe
PID 296 set thread context of 3008	296	vbc.exe	Explorer.EXE
PID 768 set thread context of 3008	768	NETSTAT.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
Gathers network information 2 TTPs 1 IoCs
Uses commandline utility to view network configuration.

System Information Discovery
T1082

Command-Line Interface
T1059

Processes:

NETSTAT.EXE

pid process

768 NETSTAT.EXE

pid	process
768	NETSTAT.EXE

Suspicious behavior: EnumeratesProcesses 60 IoCs

Processes:

vbc.exeNETSTAT.EXE

pid	process
296	vbc.exe
296	vbc.exe
296	vbc.exe
296	vbc.exe
768	NETSTAT.EXE
768	NETSTAT.EXE
768	NETSTAT.EXE
768	NETSTAT.EXE
768	NETSTAT.EXE
768	NETSTAT.EXE
768	NETSTAT.EXE
768	NETSTAT.EXE
768	NETSTAT.EXE
768	NETSTAT.EXE
768	NETSTAT.EXE
768	NETSTAT.EXE
768	NETSTAT.EXE
768	NETSTAT.EXE
768	NETSTAT.EXE
768	NETSTAT.EXE
768	NETSTAT.EXE
768	NETSTAT.EXE
768	NETSTAT.EXE
768	NETSTAT.EXE
768	NETSTAT.EXE
768	NETSTAT.EXE
768	NETSTAT.EXE
768	NETSTAT.EXE
768	NETSTAT.EXE
768	NETSTAT.EXE
768	NETSTAT.EXE
768	NETSTAT.EXE
768	NETSTAT.EXE
768	NETSTAT.EXE
768	NETSTAT.EXE
768	NETSTAT.EXE
768	NETSTAT.EXE
768	NETSTAT.EXE
768	NETSTAT.EXE
768	NETSTAT.EXE
768	NETSTAT.EXE
768	NETSTAT.EXE
768	NETSTAT.EXE
768	NETSTAT.EXE
768	NETSTAT.EXE
768	NETSTAT.EXE
768	NETSTAT.EXE
768	NETSTAT.EXE
768	NETSTAT.EXE
768	NETSTAT.EXE
768	NETSTAT.EXE
768	NETSTAT.EXE
768	NETSTAT.EXE
768	NETSTAT.EXE
768	NETSTAT.EXE
768	NETSTAT.EXE
768	NETSTAT.EXE
768	NETSTAT.EXE
768	NETSTAT.EXE
768	NETSTAT.EXE

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

3008 Explorer.EXE
Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

vbc.exeNETSTAT.EXE

pid process

296 vbc.exe
296 vbc.exe
296 vbc.exe
768 NETSTAT.EXE
768 NETSTAT.EXE
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

vbc.exeNETSTAT.EXE

description pid process

Token: SeDebugPrivilege 296 vbc.exe
Token: SeDebugPrivilege 768 NETSTAT.EXE

pid	process
3008	Explorer.EXE

description	pid	process
Token: SeDebugPrivilege	296	vbc.exe
Token: SeDebugPrivilege	768	NETSTAT.EXE

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

vbc.exeExplorer.EXENETSTAT.EXE

description	pid	process	target process
PID 2684 wrote to memory of 296	2684	vbc.exe	vbc.exe
PID 2684 wrote to memory of 296	2684	vbc.exe	vbc.exe
PID 2684 wrote to memory of 296	2684	vbc.exe	vbc.exe
PID 2684 wrote to memory of 296	2684	vbc.exe	vbc.exe
PID 2684 wrote to memory of 296	2684	vbc.exe	vbc.exe
PID 2684 wrote to memory of 296	2684	vbc.exe	vbc.exe
PID 3008 wrote to memory of 768	3008	Explorer.EXE	NETSTAT.EXE
PID 3008 wrote to memory of 768	3008	Explorer.EXE	NETSTAT.EXE
PID 3008 wrote to memory of 768	3008	Explorer.EXE	NETSTAT.EXE
PID 768 wrote to memory of 1108	768	NETSTAT.EXE	cmd.exe
PID 768 wrote to memory of 1108	768	NETSTAT.EXE	cmd.exe
PID 768 wrote to memory of 1108	768	NETSTAT.EXE	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:3008

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 use of WriteProcessMemory
PID:2684

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:296

C:\Windows\SysWOW64\NETSTAT.EXE
"C:\Windows\SysWOW64\NETSTAT.EXE"
2⤵
- Suspicious use of SetThreadContext
- Gathers network information
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:768

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\vbc.exe"
3⤵
PID:1108

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scripting

1

T1064

Command-Line Interface

1

T1059

Persistence

Privilege Escalation

Defense Evasion

Scripting

1

T1064

Credential Access

Discovery

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

\Users\Admin\AppData\Local\Temp\nsq4EF.tmp\ancprnfrgdi.dll
MD5
43e23cb30db04f30af162414f5fcb084

SHA1
2f8db11d592b1b28d56f9ba4e8666af458100a3b

SHA256
94f51bd2bafd932f5c3ae824f2a2f93be2978c6b7c194f4f39231bce3ac7fac4

SHA512
cb1ec23a47939760f6fd6e2e090124bf89c89190ed6cfe634274fdcded11fa868b7ca0c7379ec1452339e4c361a6c052f3bca9dfb44595309af02cfe16fa9daf

Download Submit
memory/296-119-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/296-120-0x000000000041D410-mapping.dmp

Download
memory/296-121-0x0000000000960000-0x0000000000C80000-memory.dmp

Filesize
3.1MB

Download
memory/296-123-0x00000000008E0000-0x00000000008F1000-memory.dmp

Filesize
68KB

Download
memory/768-125-0x0000000000000000-mapping.dmp

Download
memory/768-127-0x0000000000A80000-0x0000000000AA9000-memory.dmp

Filesize
164KB

Download
memory/768-126-0x0000000000FD0000-0x0000000000FDB000-memory.dmp

Filesize
44KB

Download
memory/768-129-0x0000000000AE0000-0x0000000000C2A000-memory.dmp

Filesize
1.3MB

Download
memory/768-130-0x0000000002FE0000-0x0000000003070000-memory.dmp

Filesize
576KB

Download
memory/1108-128-0x0000000000000000-mapping.dmp

Download
memory/3008-124-0x0000000003130000-0x000000000320B000-memory.dmp

Filesize
876KB

Download
memory/3008-131-0x0000000005AE0000-0x0000000005C34000-memory.dmp

Filesize
1.3MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads