xloader | 54dd1a6be86907485cb1f716306eb8918116f873a9382e10d92f6632491c1074

General

Target

tmp.exe
Size

331KB
MD5

4a80cec907b418a133ad5d3eea96923f
SHA1

b7772efaa512ed3465b17e07af829fedd9a885df
SHA256

54dd1a6be86907485cb1f716306eb8918116f873a9382e10d92f6632491c1074
SHA512

e8af59e857347c22a0cea3981122018b472482382fe11c642c4a67d182fc6aa78ea257f63630b36358b95304cbd07bc1048b35163af72fbb87329f3f1897bb2c

Score

10^/10

xloader sk8m loader rat suricata

Malware Config

Extracted

Family

xloader

Version

2.5

Campaign

sk8m

Decoy

cruisinforabluesin.net

elkntordo.quest

mtmoriginal.com

arespermire.quest

maisoulcolor.com

thegreekfarmerstaverna.com

midlife-fitness.com

uniquelyjessica.com

everybunnyeverybirdy.net

tryafaq.com

aandreashopp.com

selfyou.store

healthtradeusa.com

visiency.com

rainbowshopscom.com

raj-spostitve.com

jupiterflightband.com

haigui.ltd

theparentharbour.com

themutualfriend.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 4 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/832-58-0x0000000000400000-0x0000000000429000-memory.dmp	xloader
behavioral1/memory/832-59-0x000000000041D4A0-mapping.dmp	xloader
behavioral1/memory/832-61-0x0000000000400000-0x0000000000429000-memory.dmp	xloader
behavioral1/memory/1108-68-0x0000000000070000-0x0000000000099000-memory.dmp	xloader

Blocklisted process makes network request 1 IoCs

Processes:

cscript.exe

flow pid process

29 1108 cscript.exe

flow	pid	process
29	1108	cscript.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

tmp.execvtres.execscript.exe

description	pid	process	target process
PID 240 set thread context of 832	240	tmp.exe	cvtres.exe
PID 832 set thread context of 1200	832	cvtres.exe	Explorer.EXE
PID 1108 set thread context of 1200	1108	cscript.exe	Explorer.EXE

Suspicious behavior: EnumeratesProcesses 22 IoCs

Processes:

cvtres.execscript.exe

pid	process
832	cvtres.exe
832	cvtres.exe
1108	cscript.exe
1108	cscript.exe
1108	cscript.exe
1108	cscript.exe
1108	cscript.exe
1108	cscript.exe
1108	cscript.exe
1108	cscript.exe
1108	cscript.exe
1108	cscript.exe
1108	cscript.exe
1108	cscript.exe
1108	cscript.exe
1108	cscript.exe
1108	cscript.exe
1108	cscript.exe
1108	cscript.exe
1108	cscript.exe
1108	cscript.exe
1108	cscript.exe

Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

cvtres.execscript.exe

pid process

832 cvtres.exe
832 cvtres.exe
832 cvtres.exe
1108 cscript.exe
1108 cscript.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

cvtres.execscript.exe

description pid process

Token: SeDebugPrivilege 832 cvtres.exe
Token: SeDebugPrivilege 1108 cscript.exe
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

Explorer.EXE

pid process

1200 Explorer.EXE
1200 Explorer.EXE
Suspicious use of SendNotifyMessage 2 IoCs

Processes:

Explorer.EXE

pid process

1200 Explorer.EXE
1200 Explorer.EXE

description	pid	process
Token: SeDebugPrivilege	832	cvtres.exe
Token: SeDebugPrivilege	1108	cscript.exe

pid	process
1200	Explorer.EXE
1200	Explorer.EXE

pid	process
1200	Explorer.EXE
1200	Explorer.EXE

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

tmp.exeExplorer.EXEcscript.exe

description	pid	process	target process
PID 240 wrote to memory of 832	240	tmp.exe	cvtres.exe
PID 240 wrote to memory of 832	240	tmp.exe	cvtres.exe
PID 240 wrote to memory of 832	240	tmp.exe	cvtres.exe
PID 240 wrote to memory of 832	240	tmp.exe	cvtres.exe
PID 240 wrote to memory of 832	240	tmp.exe	cvtres.exe
PID 240 wrote to memory of 832	240	tmp.exe	cvtres.exe
PID 240 wrote to memory of 832	240	tmp.exe	cvtres.exe
PID 1200 wrote to memory of 1108	1200	Explorer.EXE	cscript.exe
PID 1200 wrote to memory of 1108	1200	Explorer.EXE	cscript.exe
PID 1200 wrote to memory of 1108	1200	Explorer.EXE	cscript.exe
PID 1200 wrote to memory of 1108	1200	Explorer.EXE	cscript.exe
PID 1108 wrote to memory of 1488	1108	cscript.exe	cmd.exe
PID 1108 wrote to memory of 1488	1108	cscript.exe	cmd.exe
PID 1108 wrote to memory of 1488	1108	cscript.exe	cmd.exe
PID 1108 wrote to memory of 1488	1108	cscript.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:1200

C:\Users\Admin\AppData\Local\Temp\tmp.exe
"C:\Users\Admin\AppData\Local\Temp\tmp.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:240

C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:832

C:\Windows\SysWOW64\cscript.exe
"C:\Windows\SysWOW64\cscript.exe"
2⤵
- Blocklisted process makes network request
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1108

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe"
3⤵
PID:1488

Network

MITRE ATT&CK Matrix

Replay Monitor

Loading Replay Monitor...

Downloads

memory/240-54-0x0000000000D40000-0x0000000000D96000-memory.dmp

Filesize
344KB

Download
memory/832-55-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/832-56-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/832-58-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/832-59-0x000000000041D4A0-mapping.dmp

Download
memory/832-61-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/832-62-0x00000000009E0000-0x0000000000CE3000-memory.dmp

Filesize
3.0MB

Download
memory/832-63-0x0000000000280000-0x0000000000291000-memory.dmp

Filesize
68KB

Download
memory/1108-69-0x0000000001FA0000-0x00000000022A3000-memory.dmp

Filesize
3.0MB

Download
memory/1108-65-0x0000000000000000-mapping.dmp

Download
memory/1108-67-0x00000000006C0000-0x00000000006E2000-memory.dmp

Filesize
136KB

Download
memory/1108-68-0x0000000000070000-0x0000000000099000-memory.dmp

Filesize
164KB

Download
memory/1108-70-0x0000000000580000-0x0000000000610000-memory.dmp

Filesize
576KB

Download
memory/1108-73-0x00000000757C1000-0x00000000757C3000-memory.dmp

Filesize
8KB

Download
memory/1200-64-0x0000000006690000-0x0000000006836000-memory.dmp

Filesize
1.6MB

Download
memory/1200-71-0x0000000007050000-0x00000000071B9000-memory.dmp

Filesize
1.4MB

Download
memory/1200-72-0x0000000007050000-0x00000000071B9000-memory.dmp

Filesize
1.4MB

Download
memory/1488-66-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix

Replay Monitor

Loading Replay Monitor...

Downloads