xloader | 662ae2a76488e0f775884f0c19daa286c910f2e72acb414a5f820b655ef42565

General

Target

RFQ_Beijing Chengruisi Manufacturing_pdf.exe
Size

757KB
MD5

662ccb9b69a33a02460b368c77b17f04
SHA1

9c61fbf1b27de772aebde4825a66b6da8bbf7517
SHA256

662ae2a76488e0f775884f0c19daa286c910f2e72acb414a5f820b655ef42565
SHA512

86f125976f1ef582afa3dbd289e2a369a14ae940401dd967bb9c5e262a53a1479bda3dad2a268f659eb901aabe3e4759c20c6968d0d1f2b9517b4577850b1fbb

Score

10^/10

xloader euzn loader rat

Malware Config

Extracted

Family

xloader

Version

2.5

Campaign

euzn

C2

http://www.heser.net/euzn/

Decoy

235296tyc.com

gold12guide.art

baibuaherb.com

weberwines.tax

chezvitoria.com

aidenb.tech

pitchdeckservice.com

surgeryforfdf.xyz

workunvaccinated.com

hrtaro.com

yourotcs.com

sonimultispecialityclinic.com

consultantadvisors.com

pentesting-consulting.com

dantechs.digital

longshifa.online

taweilai.net

imyusuke.com

cashndashfinancial.com

fasiglimt.quest

Signatures

Xloader
Xloader is a rebranded version of Formbook malware.
loader xloader

Xloader Payload 3 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/1780-60-0x000000000041D420-mapping.dmp	xloader
behavioral1/memory/1780-59-0x0000000000400000-0x0000000000429000-memory.dmp	xloader
behavioral1/memory/1116-66-0x0000000000080000-0x00000000000A9000-memory.dmp	xloader

Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

368 cmd.exe

pid	process
368	cmd.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

RFQ_Beijing Chengruisi Manufacturing_pdf.exeRFQ_Beijing Chengruisi Manufacturing_pdf.exechkdsk.exe

description	pid	process	target process
PID 1128 set thread context of 1780	1128	RFQ_Beijing Chengruisi Manufacturing_pdf.exe	RFQ_Beijing Chengruisi Manufacturing_pdf.exe
PID 1780 set thread context of 1360	1780	RFQ_Beijing Chengruisi Manufacturing_pdf.exe	Explorer.EXE
PID 1116 set thread context of 1360	1116	chkdsk.exe	Explorer.EXE

Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry
T1012

System Information Discovery
T1082

Processes:

chkdsk.exe

description ioc process

Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier chkdsk.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	chkdsk.exe

Suspicious behavior: EnumeratesProcesses 21 IoCs

Processes:

RFQ_Beijing Chengruisi Manufacturing_pdf.exechkdsk.exe

pid	process
1780	RFQ_Beijing Chengruisi Manufacturing_pdf.exe
1780	RFQ_Beijing Chengruisi Manufacturing_pdf.exe
1116	chkdsk.exe
1116	chkdsk.exe
1116	chkdsk.exe
1116	chkdsk.exe
1116	chkdsk.exe
1116	chkdsk.exe
1116	chkdsk.exe
1116	chkdsk.exe
1116	chkdsk.exe
1116	chkdsk.exe
1116	chkdsk.exe
1116	chkdsk.exe
1116	chkdsk.exe
1116	chkdsk.exe
1116	chkdsk.exe
1116	chkdsk.exe
1116	chkdsk.exe
1116	chkdsk.exe
1116	chkdsk.exe

Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

RFQ_Beijing Chengruisi Manufacturing_pdf.exechkdsk.exe

pid	process
1780	RFQ_Beijing Chengruisi Manufacturing_pdf.exe
1780	RFQ_Beijing Chengruisi Manufacturing_pdf.exe
1780	RFQ_Beijing Chengruisi Manufacturing_pdf.exe
1116	chkdsk.exe
1116	chkdsk.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

RFQ_Beijing Chengruisi Manufacturing_pdf.exechkdsk.exe

description pid process

Token: SeDebugPrivilege 1780 RFQ_Beijing Chengruisi Manufacturing_pdf.exe
Token: SeDebugPrivilege 1116 chkdsk.exe
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

Explorer.EXE

pid process

1360 Explorer.EXE
1360 Explorer.EXE
Suspicious use of SendNotifyMessage 2 IoCs

Processes:

Explorer.EXE

pid process

1360 Explorer.EXE
1360 Explorer.EXE

description	pid	process
Token: SeDebugPrivilege	1780	RFQ_Beijing Chengruisi Manufacturing_pdf.exe
Token: SeDebugPrivilege	1116	chkdsk.exe

pid	process
1360	Explorer.EXE
1360	Explorer.EXE

pid	process
1360	Explorer.EXE
1360	Explorer.EXE

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

RFQ_Beijing Chengruisi Manufacturing_pdf.exeExplorer.EXEchkdsk.exe

description	pid	process	target process
PID 1128 wrote to memory of 1780	1128	RFQ_Beijing Chengruisi Manufacturing_pdf.exe	RFQ_Beijing Chengruisi Manufacturing_pdf.exe
PID 1128 wrote to memory of 1780	1128	RFQ_Beijing Chengruisi Manufacturing_pdf.exe	RFQ_Beijing Chengruisi Manufacturing_pdf.exe
PID 1128 wrote to memory of 1780	1128	RFQ_Beijing Chengruisi Manufacturing_pdf.exe	RFQ_Beijing Chengruisi Manufacturing_pdf.exe
PID 1128 wrote to memory of 1780	1128	RFQ_Beijing Chengruisi Manufacturing_pdf.exe	RFQ_Beijing Chengruisi Manufacturing_pdf.exe
PID 1128 wrote to memory of 1780	1128	RFQ_Beijing Chengruisi Manufacturing_pdf.exe	RFQ_Beijing Chengruisi Manufacturing_pdf.exe
PID 1128 wrote to memory of 1780	1128	RFQ_Beijing Chengruisi Manufacturing_pdf.exe	RFQ_Beijing Chengruisi Manufacturing_pdf.exe
PID 1128 wrote to memory of 1780	1128	RFQ_Beijing Chengruisi Manufacturing_pdf.exe	RFQ_Beijing Chengruisi Manufacturing_pdf.exe
PID 1360 wrote to memory of 1116	1360	Explorer.EXE	chkdsk.exe
PID 1360 wrote to memory of 1116	1360	Explorer.EXE	chkdsk.exe
PID 1360 wrote to memory of 1116	1360	Explorer.EXE	chkdsk.exe
PID 1360 wrote to memory of 1116	1360	Explorer.EXE	chkdsk.exe
PID 1116 wrote to memory of 368	1116	chkdsk.exe	cmd.exe
PID 1116 wrote to memory of 368	1116	chkdsk.exe	cmd.exe
PID 1116 wrote to memory of 368	1116	chkdsk.exe	cmd.exe
PID 1116 wrote to memory of 368	1116	chkdsk.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1360

C:\Users\Admin\AppData\Local\Temp\RFQ_Beijing Chengruisi Manufacturing_pdf.exe
"C:\Users\Admin\AppData\Local\Temp\RFQ_Beijing Chengruisi Manufacturing_pdf.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1128

C:\Users\Admin\AppData\Local\Temp\RFQ_Beijing Chengruisi Manufacturing_pdf.exe
"C:\Users\Admin\AppData\Local\Temp\RFQ_Beijing Chengruisi Manufacturing_pdf.exe"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:1780

C:\Windows\SysWOW64\chkdsk.exe
"C:\Windows\SysWOW64\chkdsk.exe"
2⤵
- Suspicious use of SetThreadContext
- Enumerates system info in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1116

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\RFQ_Beijing Chengruisi Manufacturing_pdf.exe"
3⤵
- Deletes itself
PID:368

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

memory/368-68-0x0000000000000000-mapping.dmp

Download
memory/1116-64-0x0000000000000000-mapping.dmp

Download
memory/1116-69-0x0000000001EF0000-0x0000000001F80000-memory.dmp

Filesize
576KB

Download
memory/1116-65-0x0000000000640000-0x0000000000647000-memory.dmp

Filesize
28KB

Download
memory/1116-67-0x0000000002100000-0x0000000002403000-memory.dmp

Filesize
3.0MB

Download
memory/1116-66-0x0000000000080000-0x00000000000A9000-memory.dmp

Filesize
164KB

Download
memory/1128-58-0x0000000000800000-0x000000000083A000-memory.dmp

Filesize
232KB

Download
memory/1128-53-0x00000000002A0000-0x00000000002A1000-memory.dmp

Filesize
4KB

Download
memory/1128-57-0x00000000054C0000-0x000000000552A000-memory.dmp

Filesize
424KB

Download
memory/1128-56-0x00000000003D0000-0x00000000003ED000-memory.dmp

Filesize
116KB

Download
memory/1128-55-0x0000000004460000-0x0000000004461000-memory.dmp

Filesize
4KB

Download
memory/1360-63-0x0000000006F60000-0x00000000070B6000-memory.dmp

Filesize
1.3MB

Download
memory/1360-70-0x0000000004DC0000-0x0000000004EC0000-memory.dmp

Filesize
1024KB

Download
memory/1780-61-0x0000000000950000-0x0000000000C53000-memory.dmp

Filesize
3.0MB

Download
memory/1780-62-0x0000000000210000-0x0000000000221000-memory.dmp

Filesize
68KB

Download
memory/1780-59-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/1780-60-0x000000000041D420-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads