xloader | 35517ca8e7a66a88a7243724e6c374d0a4a82878792536087f746bf33ab2bddf

General

Target

PO#4500491796.exe
Size

944KB
MD5

e5d92d9d8c8b6bea5fff7c0fb1c2e21a
SHA1

46ffd28bced83a839042d7a49e30b8821fdaa353
SHA256

35517ca8e7a66a88a7243724e6c374d0a4a82878792536087f746bf33ab2bddf
SHA512

393ed37b97aa04abc7c92f4d7ba92725c5f33441f5747d6c9939ccce998c207c6e7fc8c657a2523fed56ebeddfffcf0cd57822b922f8c30a2aeb080a5fefc2e3

Score

10^/10

xloader n58i loader rat suricata

Malware Config

Extracted

Family

xloader

Version

2.3

Campaign

n58i

C2

http://www.mack3sleeve.com/n58i/

Decoy

nl-cafe.com

votetedjaleta.com

britrobertsrealtor.com

globipark.com

citysucces.com

verisignwebsite-verified.com

riddlepc.com

rosecityclimbing.com

oleandrinextract.com

salmankonstruksi.com

needhamchannel.com

refreshx2z.com

youth66.com

pla-russia.com

halloweenmaskpro.com

exdysis.com

1gcz.com

lookgoodman.com

rlxagva.com

stlcityc.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
behavioral1/memory/1084-66-0x0000000000400000-0x0000000000429000-memory.dmp	xloader
behavioral1/memory/1084-67-0x000000000041D070-mapping.dmp	xloader
behavioral1/memory/772-74-0x0000000000080000-0x00000000000A9000-memory.dmp	xloader

Suspicious use of SetThreadContext 3 IoCs

Processes:

PO#4500491796.exeRegSvcs.exechkdsk.exe

description	pid	process	target process
PID 2008 set thread context of 1084	2008	PO#4500491796.exe	RegSvcs.exe
PID 1084 set thread context of 1256	1084	RegSvcs.exe	Explorer.EXE
PID 772 set thread context of 1256	772	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 22 IoCs

Processes:

PO#4500491796.exeRegSvcs.exechkdsk.exe

pid	process
2008	PO#4500491796.exe
1084	RegSvcs.exe
1084	RegSvcs.exe
772	chkdsk.exe
772	chkdsk.exe
772	chkdsk.exe
772	chkdsk.exe
772	chkdsk.exe
772	chkdsk.exe
772	chkdsk.exe
772	chkdsk.exe
772	chkdsk.exe
772	chkdsk.exe
772	chkdsk.exe
772	chkdsk.exe
772	chkdsk.exe
772	chkdsk.exe
772	chkdsk.exe
772	chkdsk.exe
772	chkdsk.exe
772	chkdsk.exe
772	chkdsk.exe

Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

RegSvcs.exechkdsk.exe

pid process

1084 RegSvcs.exe
1084 RegSvcs.exe
1084 RegSvcs.exe
772 chkdsk.exe
772 chkdsk.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

PO#4500491796.exeRegSvcs.exechkdsk.exe

description pid process

Token: SeDebugPrivilege 2008 PO#4500491796.exe
Token: SeDebugPrivilege 1084 RegSvcs.exe
Token: SeDebugPrivilege 772 chkdsk.exe
Suspicious use of FindShellTrayWindow 6 IoCs

Processes:

Explorer.EXE

pid process

1256 Explorer.EXE
1256 Explorer.EXE
1256 Explorer.EXE
1256 Explorer.EXE
1256 Explorer.EXE
1256 Explorer.EXE
Suspicious use of SendNotifyMessage 6 IoCs

Processes:

Explorer.EXE

pid process

1256 Explorer.EXE
1256 Explorer.EXE
1256 Explorer.EXE
1256 Explorer.EXE
1256 Explorer.EXE
1256 Explorer.EXE

pid	process
1084	RegSvcs.exe
1084	RegSvcs.exe
1084	RegSvcs.exe
772	chkdsk.exe
772	chkdsk.exe

description	pid	process
Token: SeDebugPrivilege	2008	PO#4500491796.exe
Token: SeDebugPrivilege	1084	RegSvcs.exe
Token: SeDebugPrivilege	772	chkdsk.exe

pid	process
1256	Explorer.EXE
1256	Explorer.EXE
1256	Explorer.EXE
1256	Explorer.EXE
1256	Explorer.EXE
1256	Explorer.EXE

pid	process
1256	Explorer.EXE
1256	Explorer.EXE
1256	Explorer.EXE
1256	Explorer.EXE
1256	Explorer.EXE
1256	Explorer.EXE

Suspicious use of WriteProcessMemory 18 IoCs

Processes:

PO#4500491796.exeExplorer.EXEchkdsk.exe

description	pid	process	target process
PID 2008 wrote to memory of 1084	2008	PO#4500491796.exe	RegSvcs.exe
PID 2008 wrote to memory of 1084	2008	PO#4500491796.exe	RegSvcs.exe
PID 2008 wrote to memory of 1084	2008	PO#4500491796.exe	RegSvcs.exe
PID 2008 wrote to memory of 1084	2008	PO#4500491796.exe	RegSvcs.exe
PID 2008 wrote to memory of 1084	2008	PO#4500491796.exe	RegSvcs.exe
PID 2008 wrote to memory of 1084	2008	PO#4500491796.exe	RegSvcs.exe
PID 2008 wrote to memory of 1084	2008	PO#4500491796.exe	RegSvcs.exe
PID 2008 wrote to memory of 1084	2008	PO#4500491796.exe	RegSvcs.exe
PID 2008 wrote to memory of 1084	2008	PO#4500491796.exe	RegSvcs.exe
PID 2008 wrote to memory of 1084	2008	PO#4500491796.exe	RegSvcs.exe
PID 1256 wrote to memory of 772	1256	Explorer.EXE	chkdsk.exe
PID 1256 wrote to memory of 772	1256	Explorer.EXE	chkdsk.exe
PID 1256 wrote to memory of 772	1256	Explorer.EXE	chkdsk.exe
PID 1256 wrote to memory of 772	1256	Explorer.EXE	chkdsk.exe
PID 772 wrote to memory of 1476	772	chkdsk.exe	cmd.exe
PID 772 wrote to memory of 1476	772	chkdsk.exe	cmd.exe
PID 772 wrote to memory of 1476	772	chkdsk.exe	cmd.exe
PID 772 wrote to memory of 1476	772	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:1256

C:\Users\Admin\AppData\Local\Temp\PO#4500491796.exe
"C:\Users\Admin\AppData\Local\Temp\PO#4500491796.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2008

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:1084

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:772

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
3⤵
PID:1476

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/772-71-0x0000000000000000-mapping.dmp

Download
memory/772-78-0x00000000765F1000-0x00000000765F3000-memory.dmp

Filesize
8KB

Download
memory/772-76-0x0000000000A10000-0x0000000000AA0000-memory.dmp

Filesize
576KB

Download
memory/772-74-0x0000000000080000-0x00000000000A9000-memory.dmp

Filesize
164KB

Download
memory/772-73-0x0000000000B40000-0x0000000000E43000-memory.dmp

Filesize
3.0MB

Download
memory/772-72-0x0000000000F40000-0x0000000000F47000-memory.dmp

Filesize
28KB

Download
memory/1084-69-0x0000000000210000-0x0000000000221000-memory.dmp

Filesize
68KB

Download
memory/1084-68-0x0000000000820000-0x0000000000B23000-memory.dmp

Filesize
3.0MB

Download
memory/1084-67-0x000000000041D070-mapping.dmp

Download
memory/1084-66-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/1256-70-0x0000000005080000-0x00000000051D4000-memory.dmp

Filesize
1.3MB

Download
memory/1256-77-0x00000000051E0000-0x0000000005273000-memory.dmp

Filesize
588KB

Download
memory/1476-75-0x0000000000000000-mapping.dmp

Download
memory/2008-60-0x0000000000910000-0x0000000000911000-memory.dmp

Filesize
4KB

Download
memory/2008-65-0x0000000002150000-0x0000000002183000-memory.dmp

Filesize
204KB

Download
memory/2008-64-0x0000000005640000-0x00000000056E1000-memory.dmp

Filesize
644KB

Download
memory/2008-63-0x0000000004C40000-0x0000000004C41000-memory.dmp

Filesize
4KB

Download
memory/2008-62-0x0000000000490000-0x00000000004A1000-memory.dmp

Filesize
68KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

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Downloads