xloader | c59e9af65070704057d9d0388d84f6c0be3ee7aa61390d8822e927239172ffbf

General

Target

Rfq#001.exe
Size

266KB
MD5

8f558dc1338758e9fda83eab8ba9e7a9
SHA1

abbc4650a4ba5a91ffa99bbd0c1238d0e6e166a7
SHA256

cd89124cf3f0de7157d5f500b1dd20603a19ed890773d9cb9b1d1ea5b5372005
SHA512

d67fc009cc4d95f604540927601e9558432940b2bcefc126967f2dca4aefaa52761758c464cbe7ae42b6fb75305d721a814dbfedf48867df54d6cd733f9803df

Score

10^/10

xloader unzn loader rat

Malware Config

Extracted

Family

xloader

Version

2.5

Campaign

unzn

C2

http://www.davanamays.com/unzn/

Decoy

xiulf.com

highcountrymortar.com

523561.com

marketingagency.tools

ganmovie.net

nationaalcontactpunt.com

sirrbter.com

begizas.xyz

missimi-fashion.com

munixc.info

daas.support

spaceworbc.com

faithtruthresolve.com

gymkub.com

thegrayverse.xyz

artisanmakefurniture.com

029tryy.com

ijuubx.biz

iphone13promax.club

techuniversus.com

Signatures

Xloader
Xloader is a rebranded version of Formbook malware.
loader xloader

Xloader Payload 4 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/856-56-0x0000000000400000-0x0000000000429000-memory.dmp	xloader
behavioral1/memory/856-57-0x000000000041D430-mapping.dmp	xloader
behavioral1/memory/856-62-0x0000000000400000-0x0000000000429000-memory.dmp	xloader
behavioral1/memory/620-68-0x0000000000090000-0x00000000000B9000-memory.dmp	xloader

Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

1812 cmd.exe
Loads dropped DLL 1 IoCs

Processes:

Rfq#001.exe

pid process

820 Rfq#001.exe

pid	process
1812	cmd.exe

pid	process
820	Rfq#001.exe

Suspicious use of SetThreadContext 4 IoCs

Processes:

Rfq#001.exeRfq#001.exewuapp.exe

description	pid	process	target process
PID 820 set thread context of 856	820	Rfq#001.exe	Rfq#001.exe
PID 856 set thread context of 1264	856	Rfq#001.exe	Explorer.EXE
PID 856 set thread context of 1264	856	Rfq#001.exe	Explorer.EXE
PID 620 set thread context of 1264	620	wuapp.exe	Explorer.EXE

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 30 IoCs

Processes:

Rfq#001.exewuapp.exe

pid	process
856	Rfq#001.exe
856	Rfq#001.exe
856	Rfq#001.exe
620	wuapp.exe
620	wuapp.exe
620	wuapp.exe
620	wuapp.exe
620	wuapp.exe
620	wuapp.exe
620	wuapp.exe
620	wuapp.exe
620	wuapp.exe
620	wuapp.exe
620	wuapp.exe
620	wuapp.exe
620	wuapp.exe
620	wuapp.exe
620	wuapp.exe
620	wuapp.exe
620	wuapp.exe
620	wuapp.exe
620	wuapp.exe
620	wuapp.exe
620	wuapp.exe
620	wuapp.exe
620	wuapp.exe
620	wuapp.exe
620	wuapp.exe
620	wuapp.exe
620	wuapp.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

1264 Explorer.EXE
Suspicious behavior: MapViewOfSection 6 IoCs

Processes:

Rfq#001.exewuapp.exe

pid process

856 Rfq#001.exe
856 Rfq#001.exe
856 Rfq#001.exe
856 Rfq#001.exe
620 wuapp.exe
620 wuapp.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Rfq#001.exewuapp.exe

description pid process

Token: SeDebugPrivilege 856 Rfq#001.exe
Token: SeDebugPrivilege 620 wuapp.exe
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

Explorer.EXE

pid process

1264 Explorer.EXE
1264 Explorer.EXE
Suspicious use of SendNotifyMessage 2 IoCs

Processes:

Explorer.EXE

pid process

1264 Explorer.EXE
1264 Explorer.EXE

pid	process
1264	Explorer.EXE

description	pid	process
Token: SeDebugPrivilege	856	Rfq#001.exe
Token: SeDebugPrivilege	620	wuapp.exe

pid	process
1264	Explorer.EXE
1264	Explorer.EXE

pid	process
1264	Explorer.EXE
1264	Explorer.EXE

Suspicious use of WriteProcessMemory 18 IoCs

Processes:

Rfq#001.exeExplorer.EXEwuapp.exe

description	pid	process	target process
PID 820 wrote to memory of 856	820	Rfq#001.exe	Rfq#001.exe
PID 820 wrote to memory of 856	820	Rfq#001.exe	Rfq#001.exe
PID 820 wrote to memory of 856	820	Rfq#001.exe	Rfq#001.exe
PID 820 wrote to memory of 856	820	Rfq#001.exe	Rfq#001.exe
PID 820 wrote to memory of 856	820	Rfq#001.exe	Rfq#001.exe
PID 820 wrote to memory of 856	820	Rfq#001.exe	Rfq#001.exe
PID 820 wrote to memory of 856	820	Rfq#001.exe	Rfq#001.exe
PID 1264 wrote to memory of 620	1264	Explorer.EXE	wuapp.exe
PID 1264 wrote to memory of 620	1264	Explorer.EXE	wuapp.exe
PID 1264 wrote to memory of 620	1264	Explorer.EXE	wuapp.exe
PID 1264 wrote to memory of 620	1264	Explorer.EXE	wuapp.exe
PID 1264 wrote to memory of 620	1264	Explorer.EXE	wuapp.exe
PID 1264 wrote to memory of 620	1264	Explorer.EXE	wuapp.exe
PID 1264 wrote to memory of 620	1264	Explorer.EXE	wuapp.exe
PID 620 wrote to memory of 1812	620	wuapp.exe	cmd.exe
PID 620 wrote to memory of 1812	620	wuapp.exe	cmd.exe
PID 620 wrote to memory of 1812	620	wuapp.exe	cmd.exe
PID 620 wrote to memory of 1812	620	wuapp.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:1264

C:\Users\Admin\AppData\Local\Temp\Rfq#001.exe
"C:\Users\Admin\AppData\Local\Temp\Rfq#001.exe"
2⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:820

C:\Users\Admin\AppData\Local\Temp\Rfq#001.exe
"C:\Users\Admin\AppData\Local\Temp\Rfq#001.exe"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:856

C:\Windows\SysWOW64\wuapp.exe
"C:\Windows\SysWOW64\wuapp.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:620

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\Rfq#001.exe"
3⤵
- Deletes itself
PID:1812

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

\Users\Admin\AppData\Local\Temp\nsoF143.tmp\yaxgxn.dll
MD5
b8ecf1e913206c0ecdf268d2b81d4c49

SHA1
9696ff333c746290b27bc16b54b3fd3d8ee3f4b2

SHA256
60e1d0dd0ff15ea6d5c4abcae31e7c6f643dac85d3ac5d2d29c1f8a13e6275a0

SHA512
27c6ac947bda457ae6c003aea3b00febdb936bf52f069b418ac67ede4d8a6f11ed1623e84daa4b81d161f0702c07631c3b0f635fb076b48b0486a621b96dec86

Download Submit
memory/620-65-0x0000000000000000-mapping.dmp

Download
memory/620-70-0x00000000007C0000-0x0000000000850000-memory.dmp

Filesize
576KB

Download
memory/620-69-0x0000000000A00000-0x0000000000D03000-memory.dmp

Filesize
3.0MB

Download
memory/620-68-0x0000000000090000-0x00000000000B9000-memory.dmp

Filesize
164KB

Download
memory/620-67-0x0000000000DE0000-0x0000000000DEB000-memory.dmp

Filesize
44KB

Download
memory/820-54-0x0000000075821000-0x0000000075823000-memory.dmp

Filesize
8KB

Download
memory/856-60-0x0000000000350000-0x0000000000361000-memory.dmp

Filesize
68KB

Download
memory/856-63-0x00000000003A0000-0x00000000003B1000-memory.dmp

Filesize
68KB

Download
memory/856-62-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/856-59-0x00000000008D0000-0x0000000000BD3000-memory.dmp

Filesize
3.0MB

Download
memory/856-57-0x000000000041D430-mapping.dmp

Download
memory/856-56-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/1264-64-0x0000000006CE0000-0x0000000006DD6000-memory.dmp

Filesize
984KB

Download
memory/1264-61-0x0000000006960000-0x0000000006A31000-memory.dmp

Filesize
836KB

Download
memory/1264-71-0x0000000006DE0000-0x0000000006F14000-memory.dmp

Filesize
1.2MB

Download
memory/1812-66-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads