Analysis
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max time kernel
150s -
max time network
151s -
platform
windows7_x64 -
resource
win7-20220414-en -
submitted
16/06/2022, 09:52
Static task
static1
Behavioral task
behavioral1
Sample
SR20220600525003,xlsx.exe
Resource
win7-20220414-en
General
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Target
SR20220600525003,xlsx.exe
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Size
239KB
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MD5
1a6d08a5620ad7bfe08c88f9d47c4529
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SHA1
028e7cab4e3c2254bd7c45e52725a5a67ae7ef8c
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SHA256
a6e44c3ff8fe63ee5d3b07ad20299fe8f5bf59eead301cf5510974ad5f1285d4
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SHA512
cc93ef0ed7324510517a09dd94b727c55bc2943c3294ee031170a39d3b7208d74ff6c0c328d85774f9277fed161b05527201675626a4ee290e0dccf08f97d94f
Malware Config
Extracted
xloader
2.6
tn61
ryliehorrall.art
mesdco.net
street-art-ink.com
sepetcin.com
stilghar.com
hawaiipooltiles.com
fuerst-von-falkennest.com
totalvirtue.com
xdk0blc0tqy6a7.life
zootowngravel.com
kreditkarten-optionde.com
6888tlbb.xyz
albertakleekai.com
travelnurseinfofinder3.life
valleyinnswat.com
secure-remove-devices.com
digitalswamy.com
www112casinova.com
medifasttrd.com
distritoxermar.com
ebwagner.com
biworker.com
0571kt.net
mjuelaw.com
buildlimitlesswealth.com
wbclips.com
session.care
museatthemill.com
pjhxsl.com
momentums6.com
electricbike.energy
accommodations.network
libroskolibris.com
sejintech.net
parkchestergardens.info
gndgame.info
arcwarp.com
aboveallonline.com
dinotacker.com
ufc188livestreamfree.com
saulomar.com
atmworldexpo.com
chooox.com
admissium.com
dacdem.com
oneruk-chandeliercleaning.com
oyster-iot.cloud
mutinybrewworks.com
yaoih.com
dmitchellpropertiesllc.com
nuoicaymosaigon.com
peacockgotv.com
nextr.xyz
bidvastil.com
shahanhan.com
goodlordy.net
banlyeojob.com
tasteatlus.com
ecotone-os.xyz
urbanartco.com
drecibo.com
davegwatkin.com
pharmiva.net
accordingtopreston.com
blizzardboy.net
Signatures
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suricata: ET MALWARE FormBook CnC Checkin (GET)
suricata: ET MALWARE FormBook CnC Checkin (GET)
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Xloader Payload 5 IoCs
resource yara_rule behavioral1/memory/1164-59-0x0000000000400000-0x000000000042B000-memory.dmp xloader behavioral1/memory/1164-60-0x000000000041F2C0-mapping.dmp xloader behavioral1/memory/1164-62-0x0000000000400000-0x000000000042B000-memory.dmp xloader behavioral1/memory/1344-70-0x0000000000110000-0x000000000013B000-memory.dmp xloader behavioral1/memory/1344-74-0x0000000000110000-0x000000000013B000-memory.dmp xloader -
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Adds Run key to start application 2 TTPs 2 IoCs
description ioc Process Key created \Registry\Machine\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run rundll32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\T2_TQ6YXET = "C:\\Program Files (x86)\\Oy4nh\\winonu.exe" rundll32.exe -
Suspicious use of SetThreadContext 3 IoCs
description pid Process procid_target PID 1672 set thread context of 1164 1672 SR20220600525003,xlsx.exe 27 PID 1164 set thread context of 1204 1164 cvtres.exe 14 PID 1344 set thread context of 1204 1344 rundll32.exe 14 -
Drops file in Program Files directory 1 IoCs
description ioc Process File opened for modification C:\Program Files (x86)\Oy4nh\winonu.exe rundll32.exe -
description ioc Process Key created \Registry\User\S-1-5-21-1819626980-2277161760-1023733287-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2 rundll32.exe -
Suspicious behavior: EnumeratesProcesses 22 IoCs
pid Process 1164 cvtres.exe 1164 cvtres.exe 1344 rundll32.exe 1344 rundll32.exe 1344 rundll32.exe 1344 rundll32.exe 1344 rundll32.exe 1344 rundll32.exe 1344 rundll32.exe 1344 rundll32.exe 1344 rundll32.exe 1344 rundll32.exe 1344 rundll32.exe 1344 rundll32.exe 1344 rundll32.exe 1344 rundll32.exe 1344 rundll32.exe 1344 rundll32.exe 1344 rundll32.exe 1344 rundll32.exe 1344 rundll32.exe 1344 rundll32.exe -
Suspicious behavior: MapViewOfSection 6 IoCs
pid Process 1164 cvtres.exe 1164 cvtres.exe 1164 cvtres.exe 1344 rundll32.exe 1344 rundll32.exe 1344 rundll32.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 1164 cvtres.exe Token: SeDebugPrivilege 1344 rundll32.exe -
Suspicious use of FindShellTrayWindow 2 IoCs
pid Process 1204 Explorer.EXE 1204 Explorer.EXE -
Suspicious use of SendNotifyMessage 2 IoCs
pid Process 1204 Explorer.EXE 1204 Explorer.EXE -
Suspicious use of WriteProcessMemory 22 IoCs
description pid Process procid_target PID 1672 wrote to memory of 1164 1672 SR20220600525003,xlsx.exe 27 PID 1672 wrote to memory of 1164 1672 SR20220600525003,xlsx.exe 27 PID 1672 wrote to memory of 1164 1672 SR20220600525003,xlsx.exe 27 PID 1672 wrote to memory of 1164 1672 SR20220600525003,xlsx.exe 27 PID 1672 wrote to memory of 1164 1672 SR20220600525003,xlsx.exe 27 PID 1672 wrote to memory of 1164 1672 SR20220600525003,xlsx.exe 27 PID 1672 wrote to memory of 1164 1672 SR20220600525003,xlsx.exe 27 PID 1204 wrote to memory of 1344 1204 Explorer.EXE 28 PID 1204 wrote to memory of 1344 1204 Explorer.EXE 28 PID 1204 wrote to memory of 1344 1204 Explorer.EXE 28 PID 1204 wrote to memory of 1344 1204 Explorer.EXE 28 PID 1204 wrote to memory of 1344 1204 Explorer.EXE 28 PID 1204 wrote to memory of 1344 1204 Explorer.EXE 28 PID 1204 wrote to memory of 1344 1204 Explorer.EXE 28 PID 1344 wrote to memory of 1268 1344 rundll32.exe 29 PID 1344 wrote to memory of 1268 1344 rundll32.exe 29 PID 1344 wrote to memory of 1268 1344 rundll32.exe 29 PID 1344 wrote to memory of 1268 1344 rundll32.exe 29 PID 1344 wrote to memory of 796 1344 rundll32.exe 32 PID 1344 wrote to memory of 796 1344 rundll32.exe 32 PID 1344 wrote to memory of 796 1344 rundll32.exe 32 PID 1344 wrote to memory of 796 1344 rundll32.exe 32
Processes
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C:\Windows\Explorer.EXEC:\Windows\Explorer.EXE1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1204 -
C:\Users\Admin\AppData\Local\Temp\SR20220600525003,xlsx.exe"C:\Users\Admin\AppData\Local\Temp\SR20220600525003,xlsx.exe"2⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1672 -
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:1164
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C:\Windows\SysWOW64\rundll32.exe"C:\Windows\SysWOW64\rundll32.exe"2⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Drops file in Program Files directory
- Modifies Internet Explorer settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1344 -
C:\Windows\SysWOW64\cmd.exe/c del "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe"3⤵PID:1268
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C:\Program Files\Mozilla Firefox\Firefox.exe"C:\Program Files\Mozilla Firefox\Firefox.exe"3⤵PID:796
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