Analysis
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max time kernel
149s -
max time network
141s -
platform
windows10_x64 -
resource
win10-en -
submitted
11-09-2021 16:04
Static task
static1
Behavioral task
behavioral1
Sample
Bdcuhmcgbsvmxhmuasrulqqnfbjdnogomk.exe
Resource
win7-en
General
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Target
Bdcuhmcgbsvmxhmuasrulqqnfbjdnogomk.exe
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Size
814KB
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MD5
717297fec68e9172593a36a67549619f
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SHA1
73e8625983cb413b91b608db347177584c680a22
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SHA256
4d80ab79360b092bb5d8fa41d14388dffe5ef42839b6dbbf741f0ce5c3424d1e
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SHA512
3f363a8b8971d843f7c158b3dc76de854895a76fe0e4a6dbb6b40b650d0cec760bea15179128e52fed044e2cee6964f2b70db5abf253e873feb327d6b99ba7df
Malware Config
Extracted
formbook
4.1
3nop
http://www.jakesplacebarbers.com/3nop/
videohm.com
panache-rose.com
alnooncars-kw.com
trueblue2u.com
brussels-cafe.com
ip2c.net
influenzerr.com
rbcoq.com
zzful.com
drainthe.com
sumaholesson.com
cursosaprovados.com
genotecinc.com
dbrulhart.com
theapiarystudios.com
kensyu-kan.com
dkku88.com
tikhyper.com
aztecnort.com
homebrim.com
infinitilamp.com
leelegantflower.com
floor-space.investments
vidasustentavel.online
wholehearteddaughters.com
vipandeep.com
mdwovzrrm.icu
592215.com
academicplumbing.com
bestveganbook.com
theservantleader.com
nazarickdeveloper.xyz
delta-wing.com
girlfriendsgarb.com
sezyz11.com
ca3construction.com
smartswitchhomeloan.net
luckytwo.agency
ministry-of-barbers.com
babbageacademy.com
informationside.com
packapp.net
spacecoasthondaevent.com
thehealthyimmunereset.com
pjcavaliere.info
trebdurham.com
zhixintonghe.com
gon2580.com
dottproject.net
snakby.com
keeponsports.com
debbiewilsondesigns.com
stagingsolutionsgroup.com
forummondialdelamerbizerte.com
garnier.red
tempestchs.com
zpxinxi.com
jam-nins.com
inclusiocg.com
msmenders.com
whachupichu.com
pursemore.com
thebusinessfitclub.com
scootgotti.com
Signatures
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Formbook Payload 3 IoCs
Processes:
resource yara_rule behavioral2/memory/3684-119-0x0000000000000000-mapping.dmp formbook behavioral2/memory/3684-121-0x0000000010410000-0x000000001043E000-memory.dmp formbook behavioral2/memory/1992-127-0x0000000004E70000-0x0000000004E9E000-memory.dmp formbook -
Suspicious use of SetThreadContext 2 IoCs
Processes:
secinit.exechkdsk.exedescription pid process target process PID 3684 set thread context of 3008 3684 secinit.exe Explorer.EXE PID 1992 set thread context of 3008 1992 chkdsk.exe Explorer.EXE -
Enumerates system info in registry 2 TTPs 1 IoCs
Processes:
chkdsk.exedescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier chkdsk.exe -
Modifies registry class 2 IoCs
Processes:
Explorer.EXEdescription ioc process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{4336a54d-038b-4685-ab02-99bb52d3fb8b}\Instance Explorer.EXE Key created \REGISTRY\USER\S-1-5-21-2559286294-2439613352-4032193287-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance Explorer.EXE -
Suspicious behavior: EnumeratesProcesses 54 IoCs
Processes:
secinit.exechkdsk.exepid process 3684 secinit.exe 3684 secinit.exe 3684 secinit.exe 3684 secinit.exe 1992 chkdsk.exe 1992 chkdsk.exe 1992 chkdsk.exe 1992 chkdsk.exe 1992 chkdsk.exe 1992 chkdsk.exe 1992 chkdsk.exe 1992 chkdsk.exe 1992 chkdsk.exe 1992 chkdsk.exe 1992 chkdsk.exe 1992 chkdsk.exe 1992 chkdsk.exe 1992 chkdsk.exe 1992 chkdsk.exe 1992 chkdsk.exe 1992 chkdsk.exe 1992 chkdsk.exe 1992 chkdsk.exe 1992 chkdsk.exe 1992 chkdsk.exe 1992 chkdsk.exe 1992 chkdsk.exe 1992 chkdsk.exe 1992 chkdsk.exe 1992 chkdsk.exe 1992 chkdsk.exe 1992 chkdsk.exe 1992 chkdsk.exe 1992 chkdsk.exe 1992 chkdsk.exe 1992 chkdsk.exe 1992 chkdsk.exe 1992 chkdsk.exe 1992 chkdsk.exe 1992 chkdsk.exe 1992 chkdsk.exe 1992 chkdsk.exe 1992 chkdsk.exe 1992 chkdsk.exe 1992 chkdsk.exe 1992 chkdsk.exe 1992 chkdsk.exe 1992 chkdsk.exe 1992 chkdsk.exe 1992 chkdsk.exe 1992 chkdsk.exe 1992 chkdsk.exe 1992 chkdsk.exe 1992 chkdsk.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
Explorer.EXEpid process 3008 Explorer.EXE -
Suspicious behavior: MapViewOfSection 5 IoCs
Processes:
secinit.exechkdsk.exepid process 3684 secinit.exe 3684 secinit.exe 3684 secinit.exe 1992 chkdsk.exe 1992 chkdsk.exe -
Suspicious use of AdjustPrivilegeToken 10 IoCs
Processes:
secinit.exechkdsk.exeExplorer.EXEdescription pid process Token: SeDebugPrivilege 3684 secinit.exe Token: SeDebugPrivilege 1992 chkdsk.exe Token: SeShutdownPrivilege 3008 Explorer.EXE Token: SeCreatePagefilePrivilege 3008 Explorer.EXE Token: SeShutdownPrivilege 3008 Explorer.EXE Token: SeCreatePagefilePrivilege 3008 Explorer.EXE Token: SeShutdownPrivilege 3008 Explorer.EXE Token: SeCreatePagefilePrivilege 3008 Explorer.EXE Token: SeShutdownPrivilege 3008 Explorer.EXE Token: SeCreatePagefilePrivilege 3008 Explorer.EXE -
Suspicious use of FindShellTrayWindow 8 IoCs
Processes:
Explorer.EXEpid process 3008 Explorer.EXE 3008 Explorer.EXE 3008 Explorer.EXE 3008 Explorer.EXE 3008 Explorer.EXE 3008 Explorer.EXE 3008 Explorer.EXE 3008 Explorer.EXE -
Suspicious use of WriteProcessMemory 12 IoCs
Processes:
Bdcuhmcgbsvmxhmuasrulqqnfbjdnogomk.exeExplorer.EXEchkdsk.exedescription pid process target process PID 3952 wrote to memory of 3684 3952 Bdcuhmcgbsvmxhmuasrulqqnfbjdnogomk.exe secinit.exe PID 3952 wrote to memory of 3684 3952 Bdcuhmcgbsvmxhmuasrulqqnfbjdnogomk.exe secinit.exe PID 3952 wrote to memory of 3684 3952 Bdcuhmcgbsvmxhmuasrulqqnfbjdnogomk.exe secinit.exe PID 3952 wrote to memory of 3684 3952 Bdcuhmcgbsvmxhmuasrulqqnfbjdnogomk.exe secinit.exe PID 3952 wrote to memory of 3684 3952 Bdcuhmcgbsvmxhmuasrulqqnfbjdnogomk.exe secinit.exe PID 3952 wrote to memory of 3684 3952 Bdcuhmcgbsvmxhmuasrulqqnfbjdnogomk.exe secinit.exe PID 3008 wrote to memory of 1992 3008 Explorer.EXE chkdsk.exe PID 3008 wrote to memory of 1992 3008 Explorer.EXE chkdsk.exe PID 3008 wrote to memory of 1992 3008 Explorer.EXE chkdsk.exe PID 1992 wrote to memory of 3004 1992 chkdsk.exe cmd.exe PID 1992 wrote to memory of 3004 1992 chkdsk.exe cmd.exe PID 1992 wrote to memory of 3004 1992 chkdsk.exe cmd.exe
Processes
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C:\Windows\Explorer.EXEC:\Windows\Explorer.EXE1⤵
- Modifies registry class
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\Bdcuhmcgbsvmxhmuasrulqqnfbjdnogomk.exe"C:\Users\Admin\AppData\Local\Temp\Bdcuhmcgbsvmxhmuasrulqqnfbjdnogomk.exe"2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\secinit.exeC:\Windows\System32\secinit.exe3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\autochk.exe"C:\Windows\SysWOW64\autochk.exe"2⤵
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C:\Windows\SysWOW64\chkdsk.exe"C:\Windows\SysWOW64\chkdsk.exe"2⤵
- Suspicious use of SetThreadContext
- Enumerates system info in registry
- 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:\Windows\SysWOW64\secinit.exe"3⤵
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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memory/1992-127-0x0000000004E70000-0x0000000004E9E000-memory.dmpFilesize
184KB
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memory/1992-130-0x00000000052A0000-0x0000000005333000-memory.dmpFilesize
588KB
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memory/1992-129-0x0000000005440000-0x0000000005760000-memory.dmpFilesize
3.1MB
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memory/1992-126-0x00000000008D0000-0x00000000008DA000-memory.dmpFilesize
40KB
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memory/1992-125-0x0000000000000000-mapping.dmp
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memory/3004-128-0x0000000000000000-mapping.dmp
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memory/3008-131-0x0000000008DC0000-0x0000000008F02000-memory.dmpFilesize
1.3MB
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memory/3008-124-0x0000000006620000-0x00000000066E7000-memory.dmpFilesize
796KB
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memory/3684-120-0x00000000030F0000-0x00000000030F1000-memory.dmpFilesize
4KB
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memory/3684-123-0x0000000004E80000-0x0000000004E94000-memory.dmpFilesize
80KB
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memory/3684-122-0x00000000050C0000-0x00000000053E0000-memory.dmpFilesize
3.1MB
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memory/3684-121-0x0000000010410000-0x000000001043E000-memory.dmpFilesize
184KB
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memory/3684-119-0x0000000000000000-mapping.dmp
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memory/3952-115-0x0000000000950000-0x0000000000951000-memory.dmpFilesize
4KB