Analysis
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max time kernel
152s -
max time network
156s -
platform
windows10-2004_x64 -
resource
win10v2004-20220414-en -
submitted
21-05-2022 01:47
Static task
static1
Behavioral task
behavioral1
Sample
caietul de sarcini.exe
Resource
win7-20220414-en
General
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Target
caietul de sarcini.exe
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Size
790KB
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MD5
f28ec13e3098402bc68fea894fd99053
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SHA1
4c752327d2e9d1118e5daae6100dbeaceecfc987
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SHA256
f4156e15b465020e6687a23a63eb4b7c84a18f90ead4665087c6c2e5a09b455d
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SHA512
02703aa721ccbd210ba5fb46421f4c675266edf7a4c2b2e47bbca9b08845088d72e1656f38fcd5f010ad27da0adf395d2d63c11bde672f33f9168e6a847ea173
Malware Config
Extracted
formbook
4.1
kvsz
okashyns.com
sbsgamedaejeon-two.com
drb77.com
top5dating.com
websprings.online
voizers.com
zenith.site
lahistoriade.com
qv85.com
armandonieto.com
priestvedic.com
jessandjeff.net
magic-desktop.com
jitaji.com
ldmeili.com
yuwanqingmy.com
buzhouorg.com
chaiseloungereviews.com
m2g8way.com
freespin-support.com
bocapvang.net
315px.com
eugeniobarros.tech
sif.email
xn--oorv2aj6bj7cds0d6p4b.com
polychips.com
grouptulip.win
landbank.site
bet365c.win
inbonz.com
outofthepark.today
jeaniney.com
weeip.com
dmoneylife.com
rticlubs.com
reisedating.com
marijuanadogbone.com
funippon.com
banknotesync.com
alexandre-boissard.com
valorartetattoo.com
savetheverse.com
specificpcshop.online
h0jt1y.accountant
jiqing3.com
alfaranakle.com
saft-store.com
wanderingcollective.com
santandermobi.online
557023.top
loulancaster.com
vedattelekom.com
jatinangorcity.com
goldencanaries.com
edgaralanbro.com
levelretail.com
taylorsandbek.com
upbeatnewyork.com
motoreselectricoschihuahua.com
hotair.wales
getawomantodoit.com
xiaoxiong365.com
cloudboxsupport.com
vecteur-u-shop.com
fex-tracks.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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Formbook Payload 3 IoCs
Processes:
resource yara_rule behavioral2/memory/1912-139-0x0000000000400000-0x000000000042E000-memory.dmp formbook behavioral2/memory/1912-141-0x0000000000400000-0x000000000042E000-memory.dmp formbook behavioral2/memory/2540-147-0x00000000006F0000-0x000000000071E000-memory.dmp formbook -
Adds policy Run key to start application 2 TTPs 2 IoCs
Processes:
msdt.exedescription ioc process Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run msdt.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\EVWT4L5H3RU = "C:\\Program Files (x86)\\Lkz7\\IconCachebv1hz.exe" msdt.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
caietul de sarcini.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Control Panel\International\Geo\Nation caietul de sarcini.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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Suspicious use of SetThreadContext 3 IoCs
Processes:
caietul de sarcini.exeRegSvcs.exemsdt.exedescription pid process target process PID 3924 set thread context of 1912 3924 caietul de sarcini.exe RegSvcs.exe PID 1912 set thread context of 672 1912 RegSvcs.exe Explorer.EXE PID 2540 set thread context of 672 2540 msdt.exe Explorer.EXE -
Drops file in Program Files directory 1 IoCs
Processes:
msdt.exedescription ioc process File opened for modification C:\Program Files (x86)\Lkz7\IconCachebv1hz.exe msdt.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
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Processes:
msdt.exedescription ioc process Key created \Registry\User\S-1-5-21-2632097139-1792035885-811742494-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2 msdt.exe -
Suspicious behavior: EnumeratesProcesses 35 IoCs
Processes:
caietul de sarcini.exeRegSvcs.exemsdt.exepid process 3924 caietul de sarcini.exe 1912 RegSvcs.exe 1912 RegSvcs.exe 1912 RegSvcs.exe 1912 RegSvcs.exe 2540 msdt.exe 2540 msdt.exe 2540 msdt.exe 2540 msdt.exe 2540 msdt.exe 2540 msdt.exe 2540 msdt.exe 2540 msdt.exe 2540 msdt.exe 2540 msdt.exe 2540 msdt.exe 2540 msdt.exe 2540 msdt.exe 2540 msdt.exe 2540 msdt.exe 2540 msdt.exe 2540 msdt.exe 2540 msdt.exe 2540 msdt.exe 2540 msdt.exe 2540 msdt.exe 2540 msdt.exe 2540 msdt.exe 2540 msdt.exe 2540 msdt.exe 2540 msdt.exe 2540 msdt.exe 2540 msdt.exe 2540 msdt.exe 2540 msdt.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
Explorer.EXEpid process 672 Explorer.EXE -
Suspicious behavior: MapViewOfSection 7 IoCs
Processes:
RegSvcs.exemsdt.exepid process 1912 RegSvcs.exe 1912 RegSvcs.exe 1912 RegSvcs.exe 2540 msdt.exe 2540 msdt.exe 2540 msdt.exe 2540 msdt.exe -
Suspicious use of AdjustPrivilegeToken 7 IoCs
Processes:
caietul de sarcini.exeRegSvcs.exemsdt.exeExplorer.EXEdescription pid process Token: SeDebugPrivilege 3924 caietul de sarcini.exe Token: SeDebugPrivilege 1912 RegSvcs.exe Token: SeDebugPrivilege 2540 msdt.exe Token: SeShutdownPrivilege 672 Explorer.EXE Token: SeCreatePagefilePrivilege 672 Explorer.EXE Token: SeShutdownPrivilege 672 Explorer.EXE Token: SeCreatePagefilePrivilege 672 Explorer.EXE -
Suspicious use of WriteProcessMemory 21 IoCs
Processes:
caietul de sarcini.exeExplorer.EXEmsdt.exedescription pid process target process PID 3924 wrote to memory of 1332 3924 caietul de sarcini.exe schtasks.exe PID 3924 wrote to memory of 1332 3924 caietul de sarcini.exe schtasks.exe PID 3924 wrote to memory of 1332 3924 caietul de sarcini.exe schtasks.exe PID 3924 wrote to memory of 1912 3924 caietul de sarcini.exe RegSvcs.exe PID 3924 wrote to memory of 1912 3924 caietul de sarcini.exe RegSvcs.exe PID 3924 wrote to memory of 1912 3924 caietul de sarcini.exe RegSvcs.exe PID 3924 wrote to memory of 1912 3924 caietul de sarcini.exe RegSvcs.exe PID 3924 wrote to memory of 1912 3924 caietul de sarcini.exe RegSvcs.exe PID 3924 wrote to memory of 1912 3924 caietul de sarcini.exe RegSvcs.exe PID 672 wrote to memory of 2540 672 Explorer.EXE msdt.exe PID 672 wrote to memory of 2540 672 Explorer.EXE msdt.exe PID 672 wrote to memory of 2540 672 Explorer.EXE msdt.exe PID 2540 wrote to memory of 4772 2540 msdt.exe cmd.exe PID 2540 wrote to memory of 4772 2540 msdt.exe cmd.exe PID 2540 wrote to memory of 4772 2540 msdt.exe cmd.exe PID 2540 wrote to memory of 5116 2540 msdt.exe cmd.exe PID 2540 wrote to memory of 5116 2540 msdt.exe cmd.exe PID 2540 wrote to memory of 5116 2540 msdt.exe cmd.exe PID 2540 wrote to memory of 1268 2540 msdt.exe Firefox.exe PID 2540 wrote to memory of 1268 2540 msdt.exe Firefox.exe PID 2540 wrote to memory of 1268 2540 msdt.exe Firefox.exe
Processes
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C:\Windows\Explorer.EXEC:\Windows\Explorer.EXE1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\caietul de sarcini.exe"C:\Users\Admin\AppData\Local\Temp\caietul de sarcini.exe"2⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\oHtylzPIaQr" /XML "C:\Users\Admin\AppData\Local\Temp\tmp5C87.tmp"3⤵
- Creates scheduled task(s)
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\msdt.exe"C:\Windows\SysWOW64\msdt.exe"2⤵
- Adds policy 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
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C:\Windows\SysWOW64\cmd.exe/c del "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"3⤵
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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⤵
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C:\Program Files\Mozilla Firefox\Firefox.exe"C:\Program Files\Mozilla Firefox\Firefox.exe"3⤵
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Local\Temp\DB1Filesize
40KB
MD5b608d407fc15adea97c26936bc6f03f6
SHA1953e7420801c76393902c0d6bb56148947e41571
SHA256b281ce54125d4250a80f48fcc02a8eea53f2c35c3b726e2512c3d493da0013bf
SHA512cc96ddf4bf90d6aaa9d86803cb2aa30cd8e9b295aee1bd5544b88aeab63dc60bb1d4641e846c9771bab51aabbfbcd984c6d3ee83b96f5b65d09c0841d464b9e4
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C:\Users\Admin\AppData\Local\Temp\tmp5C87.tmpFilesize
1KB
MD58da8d0408f31cc798c6ad3fd819a0e95
SHA1ccb44a457946d729756ead466f074908aecab4b4
SHA256e1c762786c51e12f6d875c22a89c3db69292f9c2a1055869319e88aa6da091e7
SHA5121e1352306525d20ec9cf2d83ca38050d5c081eb56c4f6c2a910d588e5f2fc5b9baedc11be62a3dc7d42391b9f6be1b673201505bad9a0476a2ddac1f46a0d17b
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C:\Users\Admin\AppData\Roaming\4-6P1RQE\4-6logim.jpegFilesize
76KB
MD54d00592a40d1f525b22c0d667fc56c68
SHA1f0075c72f5f8d9a9ec7dffd4a4f3b29f3db4c639
SHA2565493ddebde5f716a150bd30eca48dc0970355e56440266dad83a36af119c5354
SHA51222ebdc03b70515b374ec0b598f907b636c483858b7e350450e14246352ccb13209c03c6f1e54179e056a9ba78cdb6c8e1c118c44a7fa3b781611d6fdbd547a7f
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C:\Users\Admin\AppData\Roaming\4-6P1RQE\4-6logrf.iniFilesize
40B
MD52f245469795b865bdd1b956c23d7893d
SHA16ad80b974d3808f5a20ea1e766c7d2f88b9e5895
SHA2561662d01a2d47b875a34fc7a8cd92e78cb2ba7f34023c7fd2639cbb10b8d94361
SHA512909f189846a5d2db208a5eb2e7cb3042c0f164caf437e2b1b6de608c0a70e4f3510b81b85753dbeec1e211e6a83e6ea8c96aff896e9b6e8ed42014473a54dc4f
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C:\Users\Admin\AppData\Roaming\4-6P1RQE\4-6logrg.iniFilesize
38B
MD54aadf49fed30e4c9b3fe4a3dd6445ebe
SHA11e332822167c6f351b99615eada2c30a538ff037
SHA25675034beb7bded9aeab5748f4592b9e1419256caec474065d43e531ec5cc21c56
SHA512eb5b3908d5e7b43ba02165e092f05578f45f15a148b4c3769036aa542c23a0f7cd2bc2770cf4119a7e437de3f681d9e398511f69f66824c516d9b451bb95f945
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C:\Users\Admin\AppData\Roaming\4-6P1RQE\4-6logri.iniFilesize
40B
MD5d63a82e5d81e02e399090af26db0b9cb
SHA191d0014c8f54743bba141fd60c9d963f869d76c9
SHA256eaece2eba6310253249603033c744dd5914089b0bb26bde6685ec9813611baae
SHA51238afb05016d8f3c69d246321573997aaac8a51c34e61749a02bf5e8b2b56b94d9544d65801511044e1495906a86dc2100f2e20ff4fcbed09e01904cc780fdbad
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C:\Users\Admin\AppData\Roaming\4-6P1RQE\4-6logrv.iniFilesize
872B
MD5bbc41c78bae6c71e63cb544a6a284d94
SHA133f2c1d9fa0e9c99b80bc2500621e95af38b1f9a
SHA256ee83c6bcea9353c74bfc0a7e739f3c4a765ace894470e09cdcdebba700b8d4cb
SHA5120aea424b57adae3e14ad6491cab585f554b4dffe601b5a17bad6ee6177d2f0f995e419cde576e2d1782b9bddc0661aada11a2c9f1454ae625d9e3223635ec9f4
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memory/672-144-0x00000000032E0000-0x0000000003459000-memory.dmpFilesize
1.5MB
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memory/672-151-0x0000000007670000-0x0000000007771000-memory.dmpFilesize
1.0MB
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memory/1332-136-0x0000000000000000-mapping.dmp
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memory/1912-141-0x0000000000400000-0x000000000042E000-memory.dmpFilesize
184KB
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memory/1912-142-0x0000000001330000-0x0000000001344000-memory.dmpFilesize
80KB
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memory/1912-143-0x0000000001350000-0x000000000169A000-memory.dmpFilesize
3.3MB
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memory/1912-139-0x0000000000400000-0x000000000042E000-memory.dmpFilesize
184KB
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memory/1912-138-0x0000000000000000-mapping.dmp
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memory/2540-145-0x0000000000000000-mapping.dmp
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memory/2540-147-0x00000000006F0000-0x000000000071E000-memory.dmpFilesize
184KB
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memory/2540-149-0x0000000002970000-0x0000000002CBA000-memory.dmpFilesize
3.3MB
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memory/2540-150-0x00000000026E0000-0x0000000002773000-memory.dmpFilesize
588KB
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memory/2540-146-0x0000000000650000-0x00000000006A7000-memory.dmpFilesize
348KB
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memory/3924-130-0x0000000000240000-0x000000000030C000-memory.dmpFilesize
816KB
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memory/3924-135-0x0000000004F50000-0x0000000004FA6000-memory.dmpFilesize
344KB
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memory/3924-134-0x0000000004D50000-0x0000000004D5A000-memory.dmpFilesize
40KB
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memory/3924-133-0x0000000004DC0000-0x0000000004E52000-memory.dmpFilesize
584KB
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memory/3924-132-0x00000000052D0000-0x0000000005874000-memory.dmpFilesize
5.6MB
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memory/3924-131-0x0000000004C80000-0x0000000004D1C000-memory.dmpFilesize
624KB
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memory/4772-148-0x0000000000000000-mapping.dmp
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memory/5116-152-0x0000000000000000-mapping.dmp