Analysis
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max time kernel
150s -
max time network
148s -
platform
windows10-2004_x64 -
resource
win10v2004-20220414-en -
submitted
21/06/2022, 08:56
Static task
static1
Behavioral task
behavioral1
Sample
vbc (2).exe
Resource
win7-20220414-en
General
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Target
vbc (2).exe
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Size
99KB
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MD5
fc2ab61fce7f203add8bd65a77df7de5
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SHA1
423261d0362864ecc99f05a726a940b33b69f5df
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SHA256
9454ba36d9a763b8543f599961cafb7a33397340ccb59b17921748771d49cd43
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SHA512
5c91637dd9083b7a1c98ccf0ad852582710ffe2d733e285e733439a1a0cae3535a1b2473f7d8e6a83ebc0545a106d806c896ae84d62bbe76077dfaeac8686e79
Malware Config
Extracted
xloader
2.6
uu0p
easeupp.com
ffffcc.xyz
commercialsymposium.com
bahamascargologistics.com
avajwelr.xyz
flipwatch.xyz
serprobumar.com
zlasher.store
zxlsn6.com
xiaojiaowanwan.com
hrkpacking.com
visitprnow.com
stkjzz.com
printfusion.net
blackoakssavannah.com
yuiseika.com
watnefarms.com
oneclickmsp.com
niu-tou.com
wholytraffic.com
selfplce.com
05mac.com
galaxy-med-systems.com
fokustestvoronka.online
enhandednice.com
ojay.xyz
silvermilecap.com
purintonco.online
halvesnwholes.com
visionsbeyondthelight.com
weightin.gold
doublelotusacu.com
mingoenterprises.net
kilostunners.store
hoken-soudan.life
frontporchbliss.com
meditransit.net
supertiresandwheels.com
novusr.com
sinvrealestate.com
princesscuttexas.com
chappyportal.com
jca-okayama.com
apefestotherside.com
yvesmoreaux.com
etsportscenter.net
needel.online
daidokorokara.net
aih.healthcare
click-tokens.com
frontrangeimages.com
lmwyldjkl2.top
ut1r92k4.xyz
the13thflooraustin.com
0531ddcc.com
souduresmartin.com
alphadegenclub.com
enjoypresenting.com
inter-ascot.com
obsidiancult.com
zxlh03.top
enoccomunicaciones.com
nft-coinsbase.com
cocovale.design
wona-nyc.com
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 FormBook CnC Checkin (POST) M2
suricata: ET MALWARE FormBook CnC Checkin (POST) M2
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Xloader Payload 4 IoCs
resource yara_rule behavioral2/memory/236-141-0x0000000000400000-0x000000000042B000-memory.dmp xloader behavioral2/memory/236-147-0x0000000000400000-0x000000000042B000-memory.dmp xloader behavioral2/memory/3300-149-0x0000000000560000-0x000000000058B000-memory.dmp xloader behavioral2/memory/3300-154-0x0000000000560000-0x000000000058B000-memory.dmp xloader -
Executes dropped EXE 1 IoCs
pid Process 5012 userlbopd.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Control Panel\International\Geo\Nation vbc (2).exe -
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 mstsc.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\SPKD8XQ8 = "C:\\Program Files (x86)\\Nut6hzlw\\userlbopd.exe" mstsc.exe -
Suspicious use of SetThreadContext 3 IoCs
description pid Process procid_target PID 4308 set thread context of 236 4308 vbc (2).exe 91 PID 236 set thread context of 2156 236 InstallUtil.exe 29 PID 3300 set thread context of 2156 3300 mstsc.exe 29 -
Drops file in Program Files directory 4 IoCs
description ioc Process File opened for modification C:\Program Files (x86)\Nut6hzlw\userlbopd.exe mstsc.exe File opened for modification C:\Program Files (x86)\Nut6hzlw Explorer.EXE File created C:\Program Files (x86)\Nut6hzlw\userlbopd.exe Explorer.EXE File opened for modification C:\Program Files (x86)\Nut6hzlw\userlbopd.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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Delays execution with timeout.exe 1 IoCs
pid Process 4144 timeout.exe -
description ioc Process Key created \Registry\User\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2 mstsc.exe -
Suspicious behavior: EnumeratesProcesses 50 IoCs
pid Process 4308 vbc (2).exe 4308 vbc (2).exe 236 InstallUtil.exe 236 InstallUtil.exe 236 InstallUtil.exe 236 InstallUtil.exe 3300 mstsc.exe 3300 mstsc.exe 3300 mstsc.exe 3300 mstsc.exe 3300 mstsc.exe 3300 mstsc.exe 3300 mstsc.exe 3300 mstsc.exe 3300 mstsc.exe 3300 mstsc.exe 3300 mstsc.exe 3300 mstsc.exe 3300 mstsc.exe 3300 mstsc.exe 3300 mstsc.exe 3300 mstsc.exe 3300 mstsc.exe 3300 mstsc.exe 3300 mstsc.exe 3300 mstsc.exe 3300 mstsc.exe 3300 mstsc.exe 3300 mstsc.exe 3300 mstsc.exe 3300 mstsc.exe 3300 mstsc.exe 3300 mstsc.exe 3300 mstsc.exe 3300 mstsc.exe 3300 mstsc.exe 3300 mstsc.exe 3300 mstsc.exe 3300 mstsc.exe 3300 mstsc.exe 3300 mstsc.exe 3300 mstsc.exe 3300 mstsc.exe 3300 mstsc.exe 3300 mstsc.exe 3300 mstsc.exe 3300 mstsc.exe 3300 mstsc.exe 3300 mstsc.exe 3300 mstsc.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 2156 Explorer.EXE -
Suspicious behavior: MapViewOfSection 7 IoCs
pid Process 236 InstallUtil.exe 236 InstallUtil.exe 236 InstallUtil.exe 3300 mstsc.exe 3300 mstsc.exe 3300 mstsc.exe 3300 mstsc.exe -
Suspicious use of AdjustPrivilegeToken 11 IoCs
description pid Process Token: SeDebugPrivilege 4308 vbc (2).exe Token: SeDebugPrivilege 236 InstallUtil.exe Token: SeDebugPrivilege 3300 mstsc.exe Token: SeShutdownPrivilege 2156 Explorer.EXE Token: SeCreatePagefilePrivilege 2156 Explorer.EXE Token: SeShutdownPrivilege 2156 Explorer.EXE Token: SeCreatePagefilePrivilege 2156 Explorer.EXE Token: SeShutdownPrivilege 2156 Explorer.EXE Token: SeCreatePagefilePrivilege 2156 Explorer.EXE Token: SeShutdownPrivilege 2156 Explorer.EXE Token: SeCreatePagefilePrivilege 2156 Explorer.EXE -
Suspicious use of WriteProcessMemory 30 IoCs
description pid Process procid_target PID 4308 wrote to memory of 1960 4308 vbc (2).exe 82 PID 4308 wrote to memory of 1960 4308 vbc (2).exe 82 PID 4308 wrote to memory of 1960 4308 vbc (2).exe 82 PID 1960 wrote to memory of 4144 1960 cmd.exe 84 PID 1960 wrote to memory of 4144 1960 cmd.exe 84 PID 1960 wrote to memory of 4144 1960 cmd.exe 84 PID 4308 wrote to memory of 236 4308 vbc (2).exe 91 PID 4308 wrote to memory of 236 4308 vbc (2).exe 91 PID 4308 wrote to memory of 236 4308 vbc (2).exe 91 PID 4308 wrote to memory of 236 4308 vbc (2).exe 91 PID 4308 wrote to memory of 236 4308 vbc (2).exe 91 PID 4308 wrote to memory of 236 4308 vbc (2).exe 91 PID 2156 wrote to memory of 3300 2156 Explorer.EXE 94 PID 2156 wrote to memory of 3300 2156 Explorer.EXE 94 PID 2156 wrote to memory of 3300 2156 Explorer.EXE 94 PID 3300 wrote to memory of 3768 3300 mstsc.exe 95 PID 3300 wrote to memory of 3768 3300 mstsc.exe 95 PID 3300 wrote to memory of 3768 3300 mstsc.exe 95 PID 3300 wrote to memory of 4884 3300 mstsc.exe 98 PID 3300 wrote to memory of 4884 3300 mstsc.exe 98 PID 3300 wrote to memory of 4884 3300 mstsc.exe 98 PID 3300 wrote to memory of 840 3300 mstsc.exe 100 PID 3300 wrote to memory of 840 3300 mstsc.exe 100 PID 3300 wrote to memory of 840 3300 mstsc.exe 100 PID 3300 wrote to memory of 972 3300 mstsc.exe 102 PID 3300 wrote to memory of 972 3300 mstsc.exe 102 PID 3300 wrote to memory of 972 3300 mstsc.exe 102 PID 2156 wrote to memory of 5012 2156 Explorer.EXE 103 PID 2156 wrote to memory of 5012 2156 Explorer.EXE 103 PID 2156 wrote to memory of 5012 2156 Explorer.EXE 103
Processes
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C:\Windows\Explorer.EXEC:\Windows\Explorer.EXE1⤵
- Drops file in Program Files directory
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2156 -
C:\Users\Admin\AppData\Local\Temp\vbc (2).exe"C:\Users\Admin\AppData\Local\Temp\vbc (2).exe"2⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4308 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c timeout 203⤵
- Suspicious use of WriteProcessMemory
PID:1960 -
C:\Windows\SysWOW64\timeout.exetimeout 204⤵
- Delays execution with timeout.exe
PID:4144
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exeC:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:236
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C:\Windows\SysWOW64\autoconv.exe"C:\Windows\SysWOW64\autoconv.exe"2⤵PID:5016
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C:\Windows\SysWOW64\autoconv.exe"C:\Windows\SysWOW64\autoconv.exe"2⤵PID:5020
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C:\Windows\SysWOW64\mstsc.exe"C:\Windows\SysWOW64\mstsc.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:3300 -
C:\Windows\SysWOW64\cmd.exe/c del "C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe"3⤵PID:3768
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C:\Windows\SysWOW64\cmd.exe/c copy "C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Login Data" "C:\Users\Admin\AppData\Local\Temp\DB1" /V3⤵PID:4884
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C:\Windows\SysWOW64\cmd.exe/c copy "C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Login Data" "C:\Users\Admin\AppData\Local\Temp\DB1" /V3⤵PID:840
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C:\Program Files\Mozilla Firefox\Firefox.exe"C:\Program Files\Mozilla Firefox\Firefox.exe"3⤵PID:972
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C:\Program Files (x86)\Nut6hzlw\userlbopd.exe"C:\Program Files (x86)\Nut6hzlw\userlbopd.exe"2⤵
- Executes dropped EXE
PID:5012
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
41KB
MD55d4073b2eb6d217c19f2b22f21bf8d57
SHA1f0209900fbf08d004b886a0b3ba33ea2b0bf9da8
SHA256ac1a3f21fcc88f9cee7bf51581eafba24cc76c924f0821deb2afdf1080ddf3d3
SHA5129ac94880684933ba3407cdc135abc3047543436567af14cd9269c4adc5a6535db7b867d6de0d6238a21b94e69f9890dbb5739155871a624520623a7e56872159
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Filesize
41KB
MD55d4073b2eb6d217c19f2b22f21bf8d57
SHA1f0209900fbf08d004b886a0b3ba33ea2b0bf9da8
SHA256ac1a3f21fcc88f9cee7bf51581eafba24cc76c924f0821deb2afdf1080ddf3d3
SHA5129ac94880684933ba3407cdc135abc3047543436567af14cd9269c4adc5a6535db7b867d6de0d6238a21b94e69f9890dbb5739155871a624520623a7e56872159
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Filesize
40KB
MD5b608d407fc15adea97c26936bc6f03f6
SHA1953e7420801c76393902c0d6bb56148947e41571
SHA256b281ce54125d4250a80f48fcc02a8eea53f2c35c3b726e2512c3d493da0013bf
SHA512cc96ddf4bf90d6aaa9d86803cb2aa30cd8e9b295aee1bd5544b88aeab63dc60bb1d4641e846c9771bab51aabbfbcd984c6d3ee83b96f5b65d09c0841d464b9e4
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Filesize
48KB
MD5349e6eb110e34a08924d92f6b334801d
SHA1bdfb289daff51890cc71697b6322aa4b35ec9169
SHA256c9fd7be4579e4aa942e8c2b44ab10115fa6c2fe6afd0c584865413d9d53f3b2a
SHA5122a635b815a5e117ea181ee79305ee1baf591459427acc5210d8c6c7e447be3513ead871c605eb3d32e4ab4111b2a335f26520d0ef8c1245a4af44e1faec44574