Analysis
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max time kernel
162s -
max time network
165s -
platform
windows7_x64 -
resource
win7v20210408 -
submitted
11-10-2021 12:41
Static task
static1
Behavioral task
behavioral1
Sample
09090.xlsx
Resource
win7v20210408
Behavioral task
behavioral2
Sample
09090.xlsx
Resource
win10-en-20210920
General
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Target
09090.xlsx
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Size
269KB
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MD5
6fde5f271c363c8c6958c79a97ba4208
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SHA1
7fc836aaf75422e4d8a4c62b3c5136d464e24f8f
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SHA256
033372113246279f04ccac1fab6748a2bfd2ed9b9c5cb980534f444dac558af8
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SHA512
8fbb97b4ed844864b8aba660496b34176967343bea968108568426e227a83c70ad2159bbc532c1ac3b6fa832bd54cc3e5bbede6abc4986101ca6f7f026b81b00
Malware Config
Extracted
xloader
2.5
b2c0
http://www.thesewhitevvalls.com/b2c0/
bjyxszd520.xyz
hsvfingerprinting.com
elliotpioneer.com
bf396.com
chinaopedia.com
6233v.com
shopeuphoricapparel.com
loccssol.store
truefictionpictures.com
playstarexch.com
peruviancoffee.store
shobhajoshi.com
philme.net
avito-rules.com
independencehomecenters.com
atp-cayenne.com
invetorsbank.com
sasanos.com
scentfreebnb.com
catfuid.com
sunshinefamilysupport.com
madison-co-atty.net
newhousebr.com
newstodayupdate.com
kamalaanjna.com
itpronto.com
hi-loentertainment.com
sadpartyrentals.com
vertuminy.com
khomayphotocopy.club
roleconstructora.com
cottonhome.online
starsspell.com
bedrijfs-kledingshop.com
aydeyahouse.com
miaintervista.com
taolemix.com
lnagvv.space
bjmobi.com
collabkc.art
onayli.net
ecostainable.com
vi88.info
brightlifeprochoice.com
taoluzhibo.info
techgobble.com
ideemimarlikinsaat.com
andajzx.com
shineshaft.website
arroundworld.com
reyuzed.com
emilfaucets.com
lumberjackguitarloops.com
pearl-interior.com
altitudebc.com
cqjiubai.com
kutahyaescortbayanlarim.xyz
metalworkingadditives.online
unasolucioendesa.com
andrewfjohnston.com
visionmark.net
dxxlewis.com
carts-amazon.com
anadolu.academy
Signatures
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suricata: ET MALWARE FormBook CnC Checkin (GET)
suricata: ET MALWARE FormBook CnC Checkin (GET)
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suricata: ET MALWARE Terse alphanumeric executable downloader high likelihood of being hostile
suricata: ET MALWARE Terse alphanumeric executable downloader high likelihood of being hostile
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Xloader Payload 3 IoCs
Processes:
resource yara_rule behavioral1/memory/308-72-0x0000000000400000-0x0000000000429000-memory.dmp xloader behavioral1/memory/308-73-0x000000000041D4C0-mapping.dmp xloader behavioral1/memory/960-82-0x0000000000080000-0x00000000000A9000-memory.dmp xloader -
Blocklisted process makes network request 1 IoCs
Processes:
EQNEDT32.EXEflow pid process 6 1660 EQNEDT32.EXE -
Downloads MZ/PE file
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Executes dropped EXE 2 IoCs
Processes:
vbc.exevbc.exepid process 1648 vbc.exe 308 vbc.exe -
Loads dropped DLL 4 IoCs
Processes:
EQNEDT32.EXEvbc.exepid process 1660 EQNEDT32.EXE 1660 EQNEDT32.EXE 1660 EQNEDT32.EXE 1648 vbc.exe -
Uses the VBS compiler for execution 1 TTPs
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Suspicious use of SetThreadContext 3 IoCs
Processes:
vbc.exevbc.exewininit.exedescription pid process target process PID 1648 set thread context of 308 1648 vbc.exe vbc.exe PID 308 set thread context of 1220 308 vbc.exe Explorer.EXE PID 960 set thread context of 1220 960 wininit.exe Explorer.EXE -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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NSIS installer 12 IoCs
Processes:
resource yara_rule \Users\Public\vbc.exe nsis_installer_1 \Users\Public\vbc.exe nsis_installer_2 \Users\Public\vbc.exe nsis_installer_1 \Users\Public\vbc.exe nsis_installer_2 \Users\Public\vbc.exe nsis_installer_1 \Users\Public\vbc.exe nsis_installer_2 C:\Users\Public\vbc.exe nsis_installer_1 C:\Users\Public\vbc.exe nsis_installer_2 C:\Users\Public\vbc.exe nsis_installer_1 C:\Users\Public\vbc.exe nsis_installer_2 C:\Users\Public\vbc.exe nsis_installer_1 C:\Users\Public\vbc.exe nsis_installer_2 -
Enumerates system info in registry 2 TTPs 1 IoCs
Processes:
EXCEL.EXEdescription ioc process Key opened \REGISTRY\MACHINE\Hardware\Description\System\FloatingPointProcessor EXCEL.EXE -
Launches Equation Editor 1 TTPs 1 IoCs
Equation Editor is an old Office component often targeted by exploits such as CVE-2017-11882.
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Processes:
EXCEL.EXEdescription ioc process Key created \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\Toolbar EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes" EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\ONBttnIE.dll/105" EXCEL.EXE Set value (int) \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\Contexts = "55" EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\MenuExt EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\EXCEL.EXE/3000" EXCEL.EXE Set value (int) \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\Contexts = "1" EXCEL.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
Processes:
EXCEL.EXEpid process 1864 EXCEL.EXE -
Suspicious behavior: EnumeratesProcesses 23 IoCs
Processes:
vbc.exewininit.exepid process 308 vbc.exe 308 vbc.exe 960 wininit.exe 960 wininit.exe 960 wininit.exe 960 wininit.exe 960 wininit.exe 960 wininit.exe 960 wininit.exe 960 wininit.exe 960 wininit.exe 960 wininit.exe 960 wininit.exe 960 wininit.exe 960 wininit.exe 960 wininit.exe 960 wininit.exe 960 wininit.exe 960 wininit.exe 960 wininit.exe 960 wininit.exe 960 wininit.exe 960 wininit.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
Explorer.EXEpid process 1220 Explorer.EXE -
Suspicious behavior: MapViewOfSection 5 IoCs
Processes:
vbc.exewininit.exepid process 308 vbc.exe 308 vbc.exe 308 vbc.exe 960 wininit.exe 960 wininit.exe -
Suspicious use of AdjustPrivilegeToken 14 IoCs
Processes:
vbc.exeExplorer.EXEwininit.exedescription pid process Token: SeDebugPrivilege 308 vbc.exe Token: SeShutdownPrivilege 1220 Explorer.EXE Token: SeShutdownPrivilege 1220 Explorer.EXE Token: SeShutdownPrivilege 1220 Explorer.EXE Token: SeShutdownPrivilege 1220 Explorer.EXE Token: SeShutdownPrivilege 1220 Explorer.EXE Token: SeDebugPrivilege 960 wininit.exe Token: SeShutdownPrivilege 1220 Explorer.EXE Token: SeShutdownPrivilege 1220 Explorer.EXE Token: SeShutdownPrivilege 1220 Explorer.EXE Token: SeShutdownPrivilege 1220 Explorer.EXE Token: SeShutdownPrivilege 1220 Explorer.EXE Token: SeShutdownPrivilege 1220 Explorer.EXE Token: SeShutdownPrivilege 1220 Explorer.EXE -
Suspicious use of FindShellTrayWindow 4 IoCs
Processes:
Explorer.EXEpid process 1220 Explorer.EXE 1220 Explorer.EXE 1220 Explorer.EXE 1220 Explorer.EXE -
Suspicious use of SendNotifyMessage 4 IoCs
Processes:
Explorer.EXEpid process 1220 Explorer.EXE 1220 Explorer.EXE 1220 Explorer.EXE 1220 Explorer.EXE -
Suspicious use of SetWindowsHookEx 3 IoCs
Processes:
EXCEL.EXEpid process 1864 EXCEL.EXE 1864 EXCEL.EXE 1864 EXCEL.EXE -
Suspicious use of WriteProcessMemory 19 IoCs
Processes:
EQNEDT32.EXEvbc.exeExplorer.EXEwininit.exedescription pid process target process PID 1660 wrote to memory of 1648 1660 EQNEDT32.EXE vbc.exe PID 1660 wrote to memory of 1648 1660 EQNEDT32.EXE vbc.exe PID 1660 wrote to memory of 1648 1660 EQNEDT32.EXE vbc.exe PID 1660 wrote to memory of 1648 1660 EQNEDT32.EXE vbc.exe PID 1648 wrote to memory of 308 1648 vbc.exe vbc.exe PID 1648 wrote to memory of 308 1648 vbc.exe vbc.exe PID 1648 wrote to memory of 308 1648 vbc.exe vbc.exe PID 1648 wrote to memory of 308 1648 vbc.exe vbc.exe PID 1648 wrote to memory of 308 1648 vbc.exe vbc.exe PID 1648 wrote to memory of 308 1648 vbc.exe vbc.exe PID 1648 wrote to memory of 308 1648 vbc.exe vbc.exe PID 1220 wrote to memory of 960 1220 Explorer.EXE wininit.exe PID 1220 wrote to memory of 960 1220 Explorer.EXE wininit.exe PID 1220 wrote to memory of 960 1220 Explorer.EXE wininit.exe PID 1220 wrote to memory of 960 1220 Explorer.EXE wininit.exe PID 960 wrote to memory of 1148 960 wininit.exe cmd.exe PID 960 wrote to memory of 1148 960 wininit.exe cmd.exe PID 960 wrote to memory of 1148 960 wininit.exe cmd.exe PID 960 wrote to memory of 1148 960 wininit.exe cmd.exe
Processes
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C:\Windows\Explorer.EXEC:\Windows\Explorer.EXE1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
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C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE"C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" /dde C:\Users\Admin\AppData\Local\Temp\09090.xlsx2⤵
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
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C:\Windows\SysWOW64\wininit.exe"C:\Windows\SysWOW64\wininit.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\Public\vbc.exe"3⤵
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C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE"C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE" -Embedding1⤵
- Blocklisted process makes network request
- Loads dropped DLL
- Launches Equation Editor
- Suspicious use of WriteProcessMemory
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C:\Users\Public\vbc.exe"C:\Users\Public\vbc.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Public\vbc.exe"C:\Users\Public\vbc.exe"3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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C:\Users\Public\vbc.exeMD5
f8ba5db8bad75222081bc6b9297126a4
SHA1290a186a9869a6f3ded1049b1d567eafe0041f5d
SHA256b4fc77c70794670f21a4c4fbc3b608589cef7b9d98acadf9b0a956404f6ca0be
SHA51270f90c213dfd898c3f9e91bb6855493ab894604f04ced9b910c3f37eb1bbe658b6944cc847e315d7fe9d793bf1dba8772c38ef12fbf3cf41c52fcde3adca26d5
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C:\Users\Public\vbc.exeMD5
f8ba5db8bad75222081bc6b9297126a4
SHA1290a186a9869a6f3ded1049b1d567eafe0041f5d
SHA256b4fc77c70794670f21a4c4fbc3b608589cef7b9d98acadf9b0a956404f6ca0be
SHA51270f90c213dfd898c3f9e91bb6855493ab894604f04ced9b910c3f37eb1bbe658b6944cc847e315d7fe9d793bf1dba8772c38ef12fbf3cf41c52fcde3adca26d5
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C:\Users\Public\vbc.exeMD5
f8ba5db8bad75222081bc6b9297126a4
SHA1290a186a9869a6f3ded1049b1d567eafe0041f5d
SHA256b4fc77c70794670f21a4c4fbc3b608589cef7b9d98acadf9b0a956404f6ca0be
SHA51270f90c213dfd898c3f9e91bb6855493ab894604f04ced9b910c3f37eb1bbe658b6944cc847e315d7fe9d793bf1dba8772c38ef12fbf3cf41c52fcde3adca26d5
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\Users\Admin\AppData\Local\Temp\nsn5284.tmp\fqbakxndgg.dllMD5
0ec0b6676a0c830fa1d12a82e0e2ccfc
SHA161edae0d4bb19dd31b9ed2ed4d76c99b4f04ebe2
SHA256c168119aced865f94f0856f3d7419f33142ffe0e8f90c94205d5707b60710617
SHA512ea5496d61a19ac03a49788d5cc7ae18603ec728c153b9c580f6faa7cfc850c297f9978429627e765467d8130409ca25ce041f0f42065d14fe53c6ef69943e574
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\Users\Public\vbc.exeMD5
f8ba5db8bad75222081bc6b9297126a4
SHA1290a186a9869a6f3ded1049b1d567eafe0041f5d
SHA256b4fc77c70794670f21a4c4fbc3b608589cef7b9d98acadf9b0a956404f6ca0be
SHA51270f90c213dfd898c3f9e91bb6855493ab894604f04ced9b910c3f37eb1bbe658b6944cc847e315d7fe9d793bf1dba8772c38ef12fbf3cf41c52fcde3adca26d5
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\Users\Public\vbc.exeMD5
f8ba5db8bad75222081bc6b9297126a4
SHA1290a186a9869a6f3ded1049b1d567eafe0041f5d
SHA256b4fc77c70794670f21a4c4fbc3b608589cef7b9d98acadf9b0a956404f6ca0be
SHA51270f90c213dfd898c3f9e91bb6855493ab894604f04ced9b910c3f37eb1bbe658b6944cc847e315d7fe9d793bf1dba8772c38ef12fbf3cf41c52fcde3adca26d5
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\Users\Public\vbc.exeMD5
f8ba5db8bad75222081bc6b9297126a4
SHA1290a186a9869a6f3ded1049b1d567eafe0041f5d
SHA256b4fc77c70794670f21a4c4fbc3b608589cef7b9d98acadf9b0a956404f6ca0be
SHA51270f90c213dfd898c3f9e91bb6855493ab894604f04ced9b910c3f37eb1bbe658b6944cc847e315d7fe9d793bf1dba8772c38ef12fbf3cf41c52fcde3adca26d5
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memory/308-73-0x000000000041D4C0-mapping.dmp
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memory/308-72-0x0000000000400000-0x0000000000429000-memory.dmpFilesize
164KB
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memory/308-76-0x0000000000910000-0x0000000000C13000-memory.dmpFilesize
3.0MB
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memory/308-77-0x0000000000350000-0x0000000000361000-memory.dmpFilesize
68KB
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memory/960-79-0x0000000000000000-mapping.dmp
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memory/960-84-0x0000000001DC0000-0x0000000001E50000-memory.dmpFilesize
576KB
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memory/960-81-0x0000000000470000-0x000000000048A000-memory.dmpFilesize
104KB
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memory/960-83-0x0000000002090000-0x0000000002393000-memory.dmpFilesize
3.0MB
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memory/960-82-0x0000000000080000-0x00000000000A9000-memory.dmpFilesize
164KB
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memory/1148-80-0x0000000000000000-mapping.dmp
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memory/1220-78-0x0000000007500000-0x00000000076A7000-memory.dmpFilesize
1.7MB
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memory/1220-85-0x0000000003BE0000-0x0000000003C8B000-memory.dmpFilesize
684KB
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memory/1648-67-0x0000000000000000-mapping.dmp
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memory/1660-63-0x00000000754F1000-0x00000000754F3000-memory.dmpFilesize
8KB
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memory/1864-61-0x0000000070F81000-0x0000000070F83000-memory.dmpFilesize
8KB
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memory/1864-60-0x000000002F111000-0x000000002F114000-memory.dmpFilesize
12KB
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memory/1864-62-0x000000005FFF0000-0x0000000060000000-memory.dmpFilesize
64KB
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memory/1864-86-0x000000005FFF0000-0x0000000060000000-memory.dmpFilesize
64KB