Analysis
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max time kernel
150s -
max time network
146s -
platform
windows7_x64 -
resource
win7-en-20210916 -
submitted
20-09-2021 10:21
Static task
static1
Behavioral task
behavioral1
Sample
vbc.exe
Resource
win7-en-20210916
General
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Target
vbc.exe
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Size
821KB
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MD5
6e1476a40e4f1b65294f5ff5df9f99d7
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SHA1
da3f2a6fb40d243ece92534253c79c2669bd4e69
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SHA256
a243b394a1a3377b3ae936e6ea896588cca8cc43f8b961bdecbbe324e28c283c
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SHA512
0bfabd3b94785ddc530ba7b76258382f1212587c50f89da273294e6c698792c4d9296bd323d3814ae559cda1fd3ce3339d9a8e0f168e5e714fc9f804b0ddfc0f
Malware Config
Extracted
xloader
2.5
euzn
http://www.heser.net/euzn/
235296tyc.com
gold12guide.art
baibuaherb.com
weberwines.tax
chezvitoria.com
aidenb.tech
pitchdeckservice.com
surgeryforfdf.xyz
workunvaccinated.com
hrtaro.com
yourotcs.com
sonimultispecialityclinic.com
consultantadvisors.com
pentesting-consulting.com
dantechs.digital
longshifa.online
taweilai.net
imyusuke.com
cashndashfinancial.com
fasiglimt.quest
jakital.com
graywolfdesign.com
pepeavatar.com
predixlogisticscourier.com
football-transfer-news.pro
herbalmedication.xyz
esd66.com
janesgalant.quest
abcrefreshments.com
chaoxy.com
rediscoveringyouhealing.com
mcrjadr5.xyz
n4sins.com
faithful-presence.com
013yu.xyz
isystemslanka.com
newbeautydk.com
ethiopia-info.com
hgaffiliates.net
anodynemedicalmassage.com
esohgroup.com
clinicamonicabarros.com
rafathecook.com
londonescort.xyz
dreamites.com
webtiyan.com
cnnautorepair.com
soposhshop.com
aarohaninsight2021.com
arceprojects.com
mecasso.store
mirai-energy.com
barwg.com
angeescollections-shop.com
xinlishiqiaoqiao.xyz
linuxsauce.net
dirbn.com
anandiaper.xyz
blackpanther.online
livinwoodbridgefarms.com
diepraxiskommunikation.com
radiosaptshahid.com
gofieldtest.com
minxtales.com
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 3 IoCs
Processes:
resource yara_rule behavioral1/memory/1348-60-0x000000000041D420-mapping.dmp xloader behavioral1/memory/1348-59-0x0000000000400000-0x0000000000429000-memory.dmp xloader behavioral1/memory/1136-67-0x0000000000100000-0x0000000000129000-memory.dmp xloader -
Deletes itself 1 IoCs
Processes:
cmd.exepid process 1284 cmd.exe -
Uses the VBS compiler for execution 1 TTPs
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Suspicious use of SetThreadContext 3 IoCs
Processes:
vbc.exevbc.exeNAPSTAT.EXEdescription pid process target process PID 1916 set thread context of 1348 1916 vbc.exe vbc.exe PID 1348 set thread context of 1220 1348 vbc.exe Explorer.EXE PID 1136 set thread context of 1220 1136 NAPSTAT.EXE Explorer.EXE -
Modifies registry class 9 IoCs
Processes:
vbc.exedescription ioc process Key created \REGISTRY\USER\S-1-5-21-2375386074-2889020035-839874990-1000_CLASSES\GMKAssembler.Project\Shell\open\command vbc.exe Key created \REGISTRY\USER\S-1-5-21-2375386074-2889020035-839874990-1000_CLASSES\GMKAssembler.Project\DefaultIcon vbc.exe Set value (str) \REGISTRY\USER\S-1-5-21-2375386074-2889020035-839874990-1000_CLASSES\GMKAssembler.Project\DefaultIcon\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\vbc.exe" vbc.exe Set value (str) \REGISTRY\USER\S-1-5-21-2375386074-2889020035-839874990-1000_CLASSES\.gmkasm\ = "GMKAssembler.Project" vbc.exe Key created \REGISTRY\USER\S-1-5-21-2375386074-2889020035-839874990-1000_CLASSES\GMKAssembler.Project vbc.exe Key created \REGISTRY\USER\S-1-5-21-2375386074-2889020035-839874990-1000_CLASSES\GMKAssembler.Project\Shell vbc.exe Key created \REGISTRY\USER\S-1-5-21-2375386074-2889020035-839874990-1000_CLASSES\GMKAssembler.Project\Shell\open vbc.exe Set value (str) \REGISTRY\USER\S-1-5-21-2375386074-2889020035-839874990-1000_CLASSES\GMKAssembler.Project\Shell\open\command\ = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\vbc.exe\" \"%1\"" vbc.exe Key created \REGISTRY\USER\S-1-5-21-2375386074-2889020035-839874990-1000_CLASSES\.gmkasm vbc.exe -
Suspicious behavior: EnumeratesProcesses 22 IoCs
Processes:
vbc.exeNAPSTAT.EXEpid process 1348 vbc.exe 1348 vbc.exe 1136 NAPSTAT.EXE 1136 NAPSTAT.EXE 1136 NAPSTAT.EXE 1136 NAPSTAT.EXE 1136 NAPSTAT.EXE 1136 NAPSTAT.EXE 1136 NAPSTAT.EXE 1136 NAPSTAT.EXE 1136 NAPSTAT.EXE 1136 NAPSTAT.EXE 1136 NAPSTAT.EXE 1136 NAPSTAT.EXE 1136 NAPSTAT.EXE 1136 NAPSTAT.EXE 1136 NAPSTAT.EXE 1136 NAPSTAT.EXE 1136 NAPSTAT.EXE 1136 NAPSTAT.EXE 1136 NAPSTAT.EXE 1136 NAPSTAT.EXE -
Suspicious behavior: MapViewOfSection 5 IoCs
Processes:
vbc.exeNAPSTAT.EXEpid process 1348 vbc.exe 1348 vbc.exe 1348 vbc.exe 1136 NAPSTAT.EXE 1136 NAPSTAT.EXE -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
vbc.exeNAPSTAT.EXEdescription pid process Token: SeDebugPrivilege 1348 vbc.exe Token: SeDebugPrivilege 1136 NAPSTAT.EXE -
Suspicious use of FindShellTrayWindow 2 IoCs
Processes:
Explorer.EXEpid process 1220 Explorer.EXE 1220 Explorer.EXE -
Suspicious use of SendNotifyMessage 2 IoCs
Processes:
Explorer.EXEpid process 1220 Explorer.EXE 1220 Explorer.EXE -
Suspicious use of WriteProcessMemory 15 IoCs
Processes:
vbc.exeExplorer.EXENAPSTAT.EXEdescription pid process target process PID 1916 wrote to memory of 1348 1916 vbc.exe vbc.exe PID 1916 wrote to memory of 1348 1916 vbc.exe vbc.exe PID 1916 wrote to memory of 1348 1916 vbc.exe vbc.exe PID 1916 wrote to memory of 1348 1916 vbc.exe vbc.exe PID 1916 wrote to memory of 1348 1916 vbc.exe vbc.exe PID 1916 wrote to memory of 1348 1916 vbc.exe vbc.exe PID 1916 wrote to memory of 1348 1916 vbc.exe vbc.exe PID 1220 wrote to memory of 1136 1220 Explorer.EXE NAPSTAT.EXE PID 1220 wrote to memory of 1136 1220 Explorer.EXE NAPSTAT.EXE PID 1220 wrote to memory of 1136 1220 Explorer.EXE NAPSTAT.EXE PID 1220 wrote to memory of 1136 1220 Explorer.EXE NAPSTAT.EXE PID 1136 wrote to memory of 1284 1136 NAPSTAT.EXE cmd.exe PID 1136 wrote to memory of 1284 1136 NAPSTAT.EXE cmd.exe PID 1136 wrote to memory of 1284 1136 NAPSTAT.EXE cmd.exe PID 1136 wrote to memory of 1284 1136 NAPSTAT.EXE cmd.exe
Processes
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C:\Windows\Explorer.EXEC:\Windows\Explorer.EXE1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\vbc.exe"C:\Users\Admin\AppData\Local\Temp\vbc.exe"2⤵
- Suspicious use of SetThreadContext
- Modifies registry class
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\vbc.exe"C:\Users\Admin\AppData\Local\Temp\vbc.exe"3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\NAPSTAT.EXE"C:\Windows\SysWOW64\NAPSTAT.EXE"2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exe/c del "C:\Users\Admin\AppData\Local\Temp\vbc.exe"3⤵
- Deletes itself
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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memory/1136-69-0x00000000021B0000-0x0000000002240000-memory.dmpFilesize
576KB
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memory/1136-68-0x0000000000990000-0x0000000000C93000-memory.dmpFilesize
3.0MB
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memory/1136-67-0x0000000000100000-0x0000000000129000-memory.dmpFilesize
164KB
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memory/1136-66-0x0000000000D60000-0x0000000000DA6000-memory.dmpFilesize
280KB
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memory/1136-64-0x0000000000000000-mapping.dmp
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memory/1220-63-0x0000000007790000-0x00000000079D8000-memory.dmpFilesize
2.3MB
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memory/1220-70-0x0000000007790000-0x00000000079D8000-memory.dmpFilesize
2.3MB
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memory/1284-65-0x0000000000000000-mapping.dmp
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memory/1348-62-0x0000000000180000-0x0000000000191000-memory.dmpFilesize
68KB
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memory/1348-61-0x00000000008D0000-0x0000000000BD3000-memory.dmpFilesize
3.0MB
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memory/1348-59-0x0000000000400000-0x0000000000429000-memory.dmpFilesize
164KB
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memory/1348-60-0x000000000041D420-mapping.dmp
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memory/1916-53-0x00000000013E0000-0x00000000013E1000-memory.dmpFilesize
4KB
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memory/1916-58-0x0000000001390000-0x00000000013C7000-memory.dmpFilesize
220KB
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memory/1916-57-0x0000000005740000-0x00000000057A7000-memory.dmpFilesize
412KB
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memory/1916-56-0x00000000007B0000-0x00000000007CD000-memory.dmpFilesize
116KB
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memory/1916-55-0x0000000004A50000-0x0000000004A51000-memory.dmpFilesize
4KB