xloader | 2cb7c7c1cb918607912be236d42152a8f9d5347cabf4e815940f2b85c5d9f026

General

Target

PO pdf.exe
Size

821KB
MD5

3b6c42f05964fe8f2625c9a812651305
SHA1

f294cb34db5a3a40b2f3ce054220746fb47ab9f2
SHA256

2cb7c7c1cb918607912be236d42152a8f9d5347cabf4e815940f2b85c5d9f026
SHA512

b9189896186d3197336adbbd94de0f3d7098b397659369ff8a3bf2e81deeef2ddb4d1b8a2a557aa060fafd71a21c7591deb1be74084900f0373908d2d6479eb0

Score

10^/10

xloader k8b5 loader rat suricata

Malware Config

Extracted

Family

xloader

Version

2.3

Campaign

k8b5

C2

http://www.chongzhi365.com/k8b5/

Decoy

sardamedicals.com

reelectkendavis4council.com

coreconsultation.com

fajarazhary.com

mybitearner.com

brightpet.info

voicewithchoice.com

bailbondscompany.xyz

7133333333.com

delights.info

gawlvegdr.icu

sdqhpm.com

we2savvyok.com

primallifeathlete.com

gdsinglecell.com

isokineticmachines.com

smartneckrelax.com

gardenvintage.com

hiphopvolume.com

medicapoint.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/3220-125-0x000000000041D0B0-mapping.dmp	xloader
behavioral2/memory/3220-124-0x0000000000400000-0x0000000000429000-memory.dmp	xloader
behavioral2/memory/1152-132-0x0000000000830000-0x0000000000859000-memory.dmp	xloader

Suspicious use of SetThreadContext 3 IoCs

Processes:

PO pdf.exePO pdf.exeNETSTAT.EXE

description	pid	process	target process
PID 1404 set thread context of 3220	1404	PO pdf.exe	PO pdf.exe
PID 3220 set thread context of 3008	3220	PO pdf.exe	Explorer.EXE
PID 1152 set thread context of 3008	1152	NETSTAT.EXE	Explorer.EXE

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

1152 NETSTAT.EXE

pid	process
1152	NETSTAT.EXE

Suspicious behavior: EnumeratesProcesses 30 IoCs

Processes:

PO pdf.exeNETSTAT.EXE

pid	process
3220	PO pdf.exe
3220	PO pdf.exe
3220	PO pdf.exe
3220	PO pdf.exe
1152	NETSTAT.EXE
1152	NETSTAT.EXE
1152	NETSTAT.EXE
1152	NETSTAT.EXE
1152	NETSTAT.EXE
1152	NETSTAT.EXE
1152	NETSTAT.EXE
1152	NETSTAT.EXE
1152	NETSTAT.EXE
1152	NETSTAT.EXE
1152	NETSTAT.EXE
1152	NETSTAT.EXE
1152	NETSTAT.EXE
1152	NETSTAT.EXE
1152	NETSTAT.EXE
1152	NETSTAT.EXE
1152	NETSTAT.EXE
1152	NETSTAT.EXE
1152	NETSTAT.EXE
1152	NETSTAT.EXE
1152	NETSTAT.EXE
1152	NETSTAT.EXE
1152	NETSTAT.EXE
1152	NETSTAT.EXE
1152	NETSTAT.EXE
1152	NETSTAT.EXE

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

3008 Explorer.EXE
Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

PO pdf.exeNETSTAT.EXE

pid process

3220 PO pdf.exe
3220 PO pdf.exe
3220 PO pdf.exe
1152 NETSTAT.EXE
1152 NETSTAT.EXE
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

PO pdf.exeNETSTAT.EXE

description pid process

Token: SeDebugPrivilege 3220 PO pdf.exe
Token: SeDebugPrivilege 1152 NETSTAT.EXE

pid	process
3008	Explorer.EXE

description	pid	process
Token: SeDebugPrivilege	3220	PO pdf.exe
Token: SeDebugPrivilege	1152	NETSTAT.EXE

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

PO pdf.exeExplorer.EXENETSTAT.EXE

description	pid	process	target process
PID 1404 wrote to memory of 3220	1404	PO pdf.exe	PO pdf.exe
PID 1404 wrote to memory of 3220	1404	PO pdf.exe	PO pdf.exe
PID 1404 wrote to memory of 3220	1404	PO pdf.exe	PO pdf.exe
PID 1404 wrote to memory of 3220	1404	PO pdf.exe	PO pdf.exe
PID 1404 wrote to memory of 3220	1404	PO pdf.exe	PO pdf.exe
PID 1404 wrote to memory of 3220	1404	PO pdf.exe	PO pdf.exe
PID 3008 wrote to memory of 1152	3008	Explorer.EXE	NETSTAT.EXE
PID 3008 wrote to memory of 1152	3008	Explorer.EXE	NETSTAT.EXE
PID 3008 wrote to memory of 1152	3008	Explorer.EXE	NETSTAT.EXE
PID 1152 wrote to memory of 2264	1152	NETSTAT.EXE	cmd.exe
PID 1152 wrote to memory of 2264	1152	NETSTAT.EXE	cmd.exe
PID 1152 wrote to memory of 2264	1152	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\PO pdf.exe
"C:\Users\Admin\AppData\Local\Temp\PO pdf.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1404

C:\Users\Admin\AppData\Local\Temp\PO pdf.exe
"C:\Users\Admin\AppData\Local\Temp\PO pdf.exe"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:3220

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:1152

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\PO pdf.exe"
3⤵
PID:2264

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Command-Line Interface

1

T1059

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/1152-134-0x0000000002EF0000-0x0000000002F7F000-memory.dmp

Filesize
572KB

Download
memory/1152-132-0x0000000000830000-0x0000000000859000-memory.dmp

Filesize
164KB

Download
memory/1152-131-0x00000000008D0000-0x00000000008DB000-memory.dmp

Filesize
44KB

Download
memory/1152-129-0x0000000000000000-mapping.dmp

Download
memory/1152-133-0x0000000003090000-0x00000000033B0000-memory.dmp

Filesize
3.1MB

Download
memory/1404-118-0x0000000003370000-0x0000000003371000-memory.dmp

Filesize
4KB

Download
memory/1404-121-0x0000000009150000-0x0000000009151000-memory.dmp

Filesize
4KB

Download
memory/1404-122-0x00000000019A0000-0x0000000001A07000-memory.dmp

Filesize
412KB

Download
memory/1404-123-0x00000000090B0000-0x00000000090E6000-memory.dmp

Filesize
216KB

Download
memory/1404-120-0x0000000009080000-0x0000000009096000-memory.dmp

Filesize
88KB

Download
memory/1404-119-0x00000000058B0000-0x00000000058B1000-memory.dmp

Filesize
4KB

Download
memory/1404-117-0x0000000005920000-0x0000000005921000-memory.dmp

Filesize
4KB

Download
memory/1404-116-0x0000000005EF0000-0x0000000005EF1000-memory.dmp

Filesize
4KB

Download
memory/1404-114-0x0000000000FA0000-0x0000000000FA1000-memory.dmp

Filesize
4KB

Download
memory/2264-130-0x0000000000000000-mapping.dmp

Download
memory/3008-128-0x0000000002CA0000-0x0000000002D91000-memory.dmp

Filesize
964KB

Download
memory/3008-135-0x0000000004E20000-0x0000000004EDB000-memory.dmp

Filesize
748KB

Download
memory/3220-126-0x0000000000F50000-0x0000000001270000-memory.dmp

Filesize
3.1MB

Download
memory/3220-127-0x0000000000AD0000-0x0000000000AE0000-memory.dmp

Filesize
64KB

Download
memory/3220-124-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/3220-125-0x000000000041D0B0-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

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Downloads