xloader | 5686f840b9b2834952367cd9c37ec4c8385bcc90348dd3a92e488c0faebed85a

General

Target

IMG-000284794.exe
Size

1.2MB
MD5

abd28466f7cb80d6da36fed9f3e6bef4
SHA1

fb2911028f32b2b3c07004a21e84773e3efd1519
SHA256

5686f840b9b2834952367cd9c37ec4c8385bcc90348dd3a92e488c0faebed85a
SHA512

0c6aa40cc0797ae3e59bf863bce36c1bb4a96760aa2897b8b03706da83e24a9009fbda569a243c890c7013d4f6e1514e73349757b16c0b318407019ad1e51586

Score

10^/10

xloader c6si loader rat suricata

Malware Config

Extracted

Family

xloader

Version

2.5

Campaign

c6si

Decoy

tristateinc.construction

americanscaregroundstexas.com

kanimisoshiru.com

wihling.com

fishcheekstosa.com

parentsfuid.com

greenstandmarket.com

fc8fla8kzq.com

gametwist-83.club

jobsncvs.com

directrealtysells.com

avida2015.com

conceptasite.net

arkaneattire.com

indev-mobility.info

2160centurypark412.com

valefloor.com

septembership.com

stackflix.com

jimc0sales.net

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
behavioral1/memory/544-61-0x0000000000400000-0x0000000000429000-memory.dmp	xloader
behavioral1/memory/544-62-0x000000000041D4B0-mapping.dmp	xloader
behavioral1/memory/560-70-0x0000000000080000-0x00000000000A9000-memory.dmp	xloader

Suspicious use of SetThreadContext 3 IoCs

Processes:

IMG-000284794.exeaspnet_regbrowsers.exechkdsk.exe

description	pid	process	target process
PID 1476 set thread context of 544	1476	IMG-000284794.exe	aspnet_regbrowsers.exe
PID 544 set thread context of 1240	544	aspnet_regbrowsers.exe	Explorer.EXE
PID 560 set thread context of 1240	560	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 26 IoCs

Processes:

aspnet_regbrowsers.exechkdsk.exe

pid	process
544	aspnet_regbrowsers.exe
544	aspnet_regbrowsers.exe
560	chkdsk.exe
560	chkdsk.exe
560	chkdsk.exe
560	chkdsk.exe
560	chkdsk.exe
560	chkdsk.exe
560	chkdsk.exe
560	chkdsk.exe
560	chkdsk.exe
560	chkdsk.exe
560	chkdsk.exe
560	chkdsk.exe
560	chkdsk.exe
560	chkdsk.exe
560	chkdsk.exe
560	chkdsk.exe
560	chkdsk.exe
560	chkdsk.exe
560	chkdsk.exe
560	chkdsk.exe
560	chkdsk.exe
560	chkdsk.exe
560	chkdsk.exe
560	chkdsk.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

1240 Explorer.EXE
Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

aspnet_regbrowsers.exechkdsk.exe

pid process

544 aspnet_regbrowsers.exe
544 aspnet_regbrowsers.exe
544 aspnet_regbrowsers.exe
560 chkdsk.exe
560 chkdsk.exe

pid	process
1240	Explorer.EXE

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

IMG-000284794.exeaspnet_regbrowsers.exechkdsk.exe

description	pid	process
Token: SeDebugPrivilege	1476	IMG-000284794.exe
Token: SeDebugPrivilege	544	aspnet_regbrowsers.exe
Token: SeDebugPrivilege	560	chkdsk.exe

Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

Explorer.EXE

pid process

1240 Explorer.EXE
1240 Explorer.EXE
Suspicious use of SendNotifyMessage 2 IoCs

Processes:

Explorer.EXE

pid process

1240 Explorer.EXE
1240 Explorer.EXE

pid	process
1240	Explorer.EXE
1240	Explorer.EXE

pid	process
1240	Explorer.EXE
1240	Explorer.EXE

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

IMG-000284794.exeExplorer.EXEchkdsk.exe

description	pid	process	target process
PID 1476 wrote to memory of 544	1476	IMG-000284794.exe	aspnet_regbrowsers.exe
PID 1476 wrote to memory of 544	1476	IMG-000284794.exe	aspnet_regbrowsers.exe
PID 1476 wrote to memory of 544	1476	IMG-000284794.exe	aspnet_regbrowsers.exe
PID 1476 wrote to memory of 544	1476	IMG-000284794.exe	aspnet_regbrowsers.exe
PID 1476 wrote to memory of 544	1476	IMG-000284794.exe	aspnet_regbrowsers.exe
PID 1476 wrote to memory of 544	1476	IMG-000284794.exe	aspnet_regbrowsers.exe
PID 1476 wrote to memory of 544	1476	IMG-000284794.exe	aspnet_regbrowsers.exe
PID 1240 wrote to memory of 560	1240	Explorer.EXE	chkdsk.exe
PID 1240 wrote to memory of 560	1240	Explorer.EXE	chkdsk.exe
PID 1240 wrote to memory of 560	1240	Explorer.EXE	chkdsk.exe
PID 1240 wrote to memory of 560	1240	Explorer.EXE	chkdsk.exe
PID 560 wrote to memory of 288	560	chkdsk.exe	cmd.exe
PID 560 wrote to memory of 288	560	chkdsk.exe	cmd.exe
PID 560 wrote to memory of 288	560	chkdsk.exe	cmd.exe
PID 560 wrote to memory of 288	560	chkdsk.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1240

C:\Users\Admin\AppData\Local\Temp\IMG-000284794.exe
"C:\Users\Admin\AppData\Local\Temp\IMG-000284794.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1476

C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_regbrowsers.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_regbrowsers.exe"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:544

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:560

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_regbrowsers.exe"
3⤵
PID:288

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/288-68-0x0000000000000000-mapping.dmp

Download
memory/544-59-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/544-60-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/544-65-0x00000000002A0000-0x00000000002B1000-memory.dmp

Filesize
68KB

Download
memory/544-63-0x0000000000930000-0x0000000000C33000-memory.dmp

Filesize
3.0MB

Download
memory/544-62-0x000000000041D4B0-mapping.dmp

Download
memory/544-61-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/560-67-0x0000000000000000-mapping.dmp

Download
memory/560-70-0x0000000000080000-0x00000000000A9000-memory.dmp

Filesize
164KB

Download
memory/560-71-0x0000000002070000-0x0000000002373000-memory.dmp

Filesize
3.0MB

Download
memory/560-69-0x0000000000700000-0x0000000000707000-memory.dmp

Filesize
28KB

Download
memory/560-72-0x0000000001DA0000-0x0000000001E30000-memory.dmp

Filesize
576KB

Download
memory/1240-66-0x00000000041D0000-0x00000000042A3000-memory.dmp

Filesize
844KB

Download
memory/1240-73-0x0000000002B70000-0x0000000002C2A000-memory.dmp

Filesize
744KB

Download
memory/1476-58-0x00000000002F0000-0x0000000000304000-memory.dmp

Filesize
80KB

Download
memory/1476-57-0x0000000001F30000-0x0000000001F31000-memory.dmp

Filesize
4KB

Download
memory/1476-55-0x0000000000330000-0x000000000045E000-memory.dmp

Filesize
1.2MB

Download
memory/1476-56-0x0000000000330000-0x000000000045E000-memory.dmp

Filesize
1.2MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads