xloader | 2cb7c7c1cb918607912be236d42152a8f9d5347cabf4e815940f2b85c5d9f026

General

Target

PO pdf.exe
Size

821KB
MD5

3b6c42f05964fe8f2625c9a812651305
SHA1

f294cb34db5a3a40b2f3ce054220746fb47ab9f2
SHA256

2cb7c7c1cb918607912be236d42152a8f9d5347cabf4e815940f2b85c5d9f026
SHA512

b9189896186d3197336adbbd94de0f3d7098b397659369ff8a3bf2e81deeef2ddb4d1b8a2a557aa060fafd71a21c7591deb1be74084900f0373908d2d6479eb0

Score

10^/10

xloader k8b5 loader rat

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

Xloader Payload 3 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/316-66-0x0000000000400000-0x0000000000429000-memory.dmp	xloader
behavioral1/memory/316-67-0x000000000041D0B0-mapping.dmp	xloader
behavioral1/memory/1328-75-0x0000000000110000-0x0000000000139000-memory.dmp	xloader

Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

2040 cmd.exe

pid	process
2040	cmd.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

PO pdf.exePO pdf.exerundll32.exe

description	pid	process	target process
PID 564 set thread context of 316	564	PO pdf.exe	PO pdf.exe
PID 316 set thread context of 1200	316	PO pdf.exe	Explorer.EXE
PID 1328 set thread context of 1200	1328	rundll32.exe	Explorer.EXE

Suspicious behavior: EnumeratesProcesses 19 IoCs

Processes:

PO pdf.exerundll32.exe

pid	process
316	PO pdf.exe
316	PO pdf.exe
1328	rundll32.exe
1328	rundll32.exe
1328	rundll32.exe
1328	rundll32.exe
1328	rundll32.exe
1328	rundll32.exe
1328	rundll32.exe
1328	rundll32.exe
1328	rundll32.exe
1328	rundll32.exe
1328	rundll32.exe
1328	rundll32.exe
1328	rundll32.exe
1328	rundll32.exe
1328	rundll32.exe
1328	rundll32.exe
1328	rundll32.exe

Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

PO pdf.exerundll32.exe

pid process

316 PO pdf.exe
316 PO pdf.exe
316 PO pdf.exe
1328 rundll32.exe
1328 rundll32.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

PO pdf.exerundll32.exe

description pid process

Token: SeDebugPrivilege 316 PO pdf.exe
Token: SeDebugPrivilege 1328 rundll32.exe

description	pid	process
Token: SeDebugPrivilege	316	PO pdf.exe
Token: SeDebugPrivilege	1328	rundll32.exe

Suspicious use of WriteProcessMemory 18 IoCs

Processes:

PO pdf.exeExplorer.EXErundll32.exe

description	pid	process	target process
PID 564 wrote to memory of 316	564	PO pdf.exe	PO pdf.exe
PID 564 wrote to memory of 316	564	PO pdf.exe	PO pdf.exe
PID 564 wrote to memory of 316	564	PO pdf.exe	PO pdf.exe
PID 564 wrote to memory of 316	564	PO pdf.exe	PO pdf.exe
PID 564 wrote to memory of 316	564	PO pdf.exe	PO pdf.exe
PID 564 wrote to memory of 316	564	PO pdf.exe	PO pdf.exe
PID 564 wrote to memory of 316	564	PO pdf.exe	PO pdf.exe
PID 1200 wrote to memory of 1328	1200	Explorer.EXE	rundll32.exe
PID 1200 wrote to memory of 1328	1200	Explorer.EXE	rundll32.exe
PID 1200 wrote to memory of 1328	1200	Explorer.EXE	rundll32.exe
PID 1200 wrote to memory of 1328	1200	Explorer.EXE	rundll32.exe
PID 1200 wrote to memory of 1328	1200	Explorer.EXE	rundll32.exe
PID 1200 wrote to memory of 1328	1200	Explorer.EXE	rundll32.exe
PID 1200 wrote to memory of 1328	1200	Explorer.EXE	rundll32.exe
PID 1328 wrote to memory of 2040	1328	rundll32.exe	cmd.exe
PID 1328 wrote to memory of 2040	1328	rundll32.exe	cmd.exe
PID 1328 wrote to memory of 2040	1328	rundll32.exe	cmd.exe
PID 1328 wrote to memory of 2040	1328	rundll32.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1200

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:564

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:316

C:\Windows\SysWOW64\rundll32.exe
"C:\Windows\SysWOW64\rundll32.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1328

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\PO pdf.exe"
3⤵
- Deletes itself
PID:2040

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

memory/316-66-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/316-69-0x00000000000F0000-0x0000000000100000-memory.dmp

Filesize
64KB

Download
memory/316-68-0x0000000000A40000-0x0000000000D43000-memory.dmp

Filesize
3.0MB

Download
memory/316-67-0x000000000041D0B0-mapping.dmp

Download
memory/564-65-0x0000000000BD0000-0x0000000000C06000-memory.dmp

Filesize
216KB

Download
memory/564-60-0x0000000001000000-0x0000000001001000-memory.dmp

Filesize
4KB

Download
memory/564-64-0x0000000005D90000-0x0000000005DF7000-memory.dmp

Filesize
412KB

Download
memory/564-63-0x00000000005C0000-0x00000000005D6000-memory.dmp

Filesize
88KB

Download
memory/564-62-0x00000000002A0000-0x00000000002A1000-memory.dmp

Filesize
4KB

Download
memory/1200-70-0x0000000006130000-0x000000000621E000-memory.dmp

Filesize
952KB

Download
memory/1200-78-0x00000000063D0000-0x0000000006504000-memory.dmp

Filesize
1.2MB

Download
memory/1328-72-0x00000000757C1000-0x00000000757C3000-memory.dmp

Filesize
8KB

Download
memory/1328-74-0x0000000000EE0000-0x0000000000EEE000-memory.dmp

Filesize
56KB

Download
memory/1328-75-0x0000000000110000-0x0000000000139000-memory.dmp

Filesize
164KB

Download
memory/1328-76-0x0000000000B40000-0x0000000000E43000-memory.dmp

Filesize
3.0MB

Download
memory/1328-77-0x0000000000A60000-0x0000000000AEF000-memory.dmp

Filesize
572KB

Download
memory/1328-71-0x0000000000000000-mapping.dmp

Download
memory/2040-73-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads