xloader | 31f44a55873cb84506a1213469e0c884eb7f8b4dea91197bedf8a892c1404654

General

Target

PO.exe
Size

906KB
MD5

d87832e3f675ffd9d871f455ffa55ff1
SHA1

8d2a9daa0caf5fad0159ed2233d56bf94b8e7337
SHA256

31f44a55873cb84506a1213469e0c884eb7f8b4dea91197bedf8a892c1404654
SHA512

779258a90d6552c09b132b01b80418054c9a972d797d91c8e202644594a487da60653777137f6acf1ad8ad4d7e8b873bb88505338a126923f9876c9c7499adf9

Score

10^/10

xloader yrcy loader rat suricata

Malware Config

Extracted

Family

xloader

Version

2.5

Campaign

yrcy

Decoy

sturlabas.com

tantrungcompany.com

wildgraceyogahealing.com

wsparalegal.com

8xhgq.xyz

mysaylav.com

amelntl.net

cooleshow.online

adventuresbydisneyathome.com

sprinklekart.com

prostitutkitambovasuck.info

pakdao.com

finsith.com

nightpartner82.xyz

sex9a4ufbj.com

ketohousee.com

mairie-les-cammazes.com

elebots.xyz

highqualityremodeling.net

teamsterslocal553.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 3 IoCs

rat

Processes:

resource	yara_rule
behavioral2/memory/3512-137-0x0000000000400000-0x0000000000429000-memory.dmp	xloader
behavioral2/memory/3512-139-0x0000000000400000-0x0000000000429000-memory.dmp	xloader
behavioral2/memory/3152-145-0x0000000000310000-0x0000000000339000-memory.dmp	xloader

Suspicious use of SetThreadContext 3 IoCs

Processes:

PO.exeRegSvcs.exechkdsk.exe

description	pid	process	target process
PID 3764 set thread context of 3512	3764	PO.exe	RegSvcs.exe
PID 3512 set thread context of 2428	3512	RegSvcs.exe	Explorer.EXE
PID 3152 set thread context of 2428	3152	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 14 IoCs

Processes:

PO.exeRegSvcs.exechkdsk.exe

pid	process
3764	PO.exe
3764	PO.exe
3512	RegSvcs.exe
3512	RegSvcs.exe
3512	RegSvcs.exe
3512	RegSvcs.exe
3152	chkdsk.exe
3152	chkdsk.exe
3152	chkdsk.exe
3152	chkdsk.exe
3152	chkdsk.exe
3152	chkdsk.exe
3152	chkdsk.exe
3152	chkdsk.exe

Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

RegSvcs.exechkdsk.exe

pid process

3512 RegSvcs.exe
3512 RegSvcs.exe
3512 RegSvcs.exe
3152 chkdsk.exe
3152 chkdsk.exe

pid	process
3512	RegSvcs.exe
3512	RegSvcs.exe
3512	RegSvcs.exe
3152	chkdsk.exe
3152	chkdsk.exe

Suspicious use of AdjustPrivilegeToken 7 IoCs

Processes:

PO.exeRegSvcs.exeExplorer.EXEchkdsk.exe

description	pid	process
Token: SeDebugPrivilege	3764	PO.exe
Token: SeDebugPrivilege	3512	RegSvcs.exe
Token: SeShutdownPrivilege	2428	Explorer.EXE
Token: SeCreatePagefilePrivilege	2428	Explorer.EXE
Token: SeDebugPrivilege	3152	chkdsk.exe
Token: SeShutdownPrivilege	2428	Explorer.EXE
Token: SeCreatePagefilePrivilege	2428	Explorer.EXE

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

PO.exeExplorer.EXEchkdsk.exe

description	pid	process	target process
PID 3764 wrote to memory of 3512	3764	PO.exe	RegSvcs.exe
PID 3764 wrote to memory of 3512	3764	PO.exe	RegSvcs.exe
PID 3764 wrote to memory of 3512	3764	PO.exe	RegSvcs.exe
PID 3764 wrote to memory of 3512	3764	PO.exe	RegSvcs.exe
PID 3764 wrote to memory of 3512	3764	PO.exe	RegSvcs.exe
PID 3764 wrote to memory of 3512	3764	PO.exe	RegSvcs.exe
PID 2428 wrote to memory of 3152	2428	Explorer.EXE	chkdsk.exe
PID 2428 wrote to memory of 3152	2428	Explorer.EXE	chkdsk.exe
PID 2428 wrote to memory of 3152	2428	Explorer.EXE	chkdsk.exe
PID 3152 wrote to memory of 3852	3152	chkdsk.exe	cmd.exe
PID 3152 wrote to memory of 3852	3152	chkdsk.exe	cmd.exe
PID 3152 wrote to memory of 3852	3152	chkdsk.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2428

C:\Users\Admin\AppData\Local\Temp\PO.exe
"C:\Users\Admin\AppData\Local\Temp\PO.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3764

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:3512

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:3152

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
3⤵
PID:3852

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

Replay Monitor

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Downloads

memory/2428-143-0x0000000008310000-0x000000000846F000-memory.dmp

Filesize
1.4MB

Download
memory/2428-148-0x00000000087D0000-0x0000000008913000-memory.dmp

Filesize
1.3MB

Download
memory/3152-147-0x0000000004AD0000-0x0000000004B60000-memory.dmp

Filesize
576KB

Download
memory/3152-146-0x0000000004D50000-0x000000000509A000-memory.dmp

Filesize
3.3MB

Download
memory/3152-145-0x0000000000310000-0x0000000000339000-memory.dmp

Filesize
164KB

Download
memory/3152-144-0x0000000000580000-0x000000000058A000-memory.dmp

Filesize
40KB

Download
memory/3512-139-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/3512-137-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/3512-140-0x0000000001990000-0x0000000001CDA000-memory.dmp

Filesize
3.3MB

Download
memory/3512-141-0x000000000041D000-0x000000000041E000-memory.dmp

Filesize
4KB

Download
memory/3512-142-0x0000000001380000-0x0000000001391000-memory.dmp

Filesize
68KB

Download
memory/3764-130-0x00000000749E0000-0x0000000075190000-memory.dmp

Filesize
7.7MB

Download
memory/3764-136-0x0000000000DD0000-0x0000000000E6C000-memory.dmp

Filesize
624KB

Download
memory/3764-135-0x0000000005070000-0x000000000507A000-memory.dmp

Filesize
40KB

Download
memory/3764-134-0x0000000004E90000-0x0000000005434000-memory.dmp

Filesize
5.6MB

Download
memory/3764-133-0x0000000004E90000-0x0000000004F22000-memory.dmp

Filesize
584KB

Download
memory/3764-132-0x0000000005440000-0x00000000059E4000-memory.dmp

Filesize
5.6MB

Download
memory/3764-131-0x00000000003B0000-0x0000000000498000-memory.dmp

Filesize
928KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads