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Analysis
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max time kernel
95s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
25/12/2024, 20:06 UTC
Static task
static1
Behavioral task
behavioral1
Sample
bc9c0e0ebbf2f2f0e5ce6b2907504ecabf46145d1159809d742de6dcaed29dcf.dll
Resource
win7-20241010-en
General
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Target
bc9c0e0ebbf2f2f0e5ce6b2907504ecabf46145d1159809d742de6dcaed29dcf.dll
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Size
124KB
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MD5
daa45d7612ba5c09af73723ae271f68f
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SHA1
20083b1389814ca8f109a87e0bf0add7712b9903
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SHA256
bc9c0e0ebbf2f2f0e5ce6b2907504ecabf46145d1159809d742de6dcaed29dcf
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SHA512
64eb399d2b5b85745568b1834afc5c1f1f91e5283726f7ae671484730a5fc17f8f72c90fe2ed7fe9d72aaf25d96616e27b8d4591858155cc6d560699464bf249
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SSDEEP
3072:Sjul6/5M7VmKeZ88Dkj7oR2SqwKJXtf5DGyVBQwIY6X4N:SocvZNDkYR2SqwK/AyVBQ9RIN
Malware Config
Signatures
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Ramnit family
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Executes dropped EXE 1 IoCs
pid Process 3768 rundll32mgr.exe -
Drops file in System32 directory 1 IoCs
description ioc Process File created C:\Windows\SysWOW64\rundll32mgr.exe rundll32.exe -
resource yara_rule behavioral2/memory/3768-11-0x0000000000400000-0x000000000041A000-memory.dmp upx behavioral2/memory/3768-14-0x0000000000400000-0x000000000041A000-memory.dmp upx behavioral2/memory/3768-16-0x0000000000400000-0x000000000041A000-memory.dmp upx behavioral2/memory/3768-15-0x0000000000400000-0x000000000041A000-memory.dmp upx behavioral2/memory/3768-12-0x0000000000400000-0x000000000041A000-memory.dmp upx behavioral2/memory/3768-13-0x0000000000400000-0x000000000041A000-memory.dmp upx behavioral2/memory/3768-7-0x0000000000400000-0x000000000041A000-memory.dmp upx behavioral2/memory/3768-8-0x0000000000400000-0x000000000041A000-memory.dmp upx behavioral2/memory/3768-6-0x0000000000400000-0x000000000041A000-memory.dmp upx -
System Location Discovery: System Language Discovery 1 TTPs 3 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language rundll32.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language rundll32mgr.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language IEXPLORE.EXE -
description ioc Process Key created \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Software\Microsoft\Internet Explorer\VersionManager iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Software\Microsoft\Internet Explorer\VersionManager IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Software\Microsoft\Internet Explorer\Main IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "2412808240" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\ iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "2416872562" IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{BB4CC2AB-C2FB-11EF-B319-DA67B56E6C1B} = "0" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Software\Microsoft\Internet Explorer\GPU IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31151880" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "441922165" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Software\Microsoft\Internet Explorer\Main iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no" iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Internet Explorer\GPU\AdapterInfo = "vendorId=\"0x10de\",deviceID=\"0x8c\",subSysID=\"0x0\",revision=\"0x0\",version=\"10.0.19041.546\"hypervisor=\"No Hypervisor (No SLAT)\"" IEXPLORE.EXE Set value (str) \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "2412808240" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31151880" iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running" iexplore.exe Set value (data) \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000 iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31151880" IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\ iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Software\Microsoft\Internet Explorer\DomainSuggestion iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200" iexplore.exe -
Suspicious behavior: EnumeratesProcesses 8 IoCs
pid Process 3768 rundll32mgr.exe 3768 rundll32mgr.exe 3768 rundll32mgr.exe 3768 rundll32mgr.exe 3768 rundll32mgr.exe 3768 rundll32mgr.exe 3768 rundll32mgr.exe 3768 rundll32mgr.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 3768 rundll32mgr.exe -
Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 3328 iexplore.exe -
Suspicious use of SetWindowsHookEx 6 IoCs
pid Process 3328 iexplore.exe 3328 iexplore.exe 4152 IEXPLORE.EXE 4152 IEXPLORE.EXE 4152 IEXPLORE.EXE 4152 IEXPLORE.EXE -
Suspicious use of UnmapMainImage 1 IoCs
pid Process 3768 rundll32mgr.exe -
Suspicious use of WriteProcessMemory 11 IoCs
description pid Process procid_target PID 5096 wrote to memory of 844 5096 rundll32.exe 83 PID 5096 wrote to memory of 844 5096 rundll32.exe 83 PID 5096 wrote to memory of 844 5096 rundll32.exe 83 PID 844 wrote to memory of 3768 844 rundll32.exe 84 PID 844 wrote to memory of 3768 844 rundll32.exe 84 PID 844 wrote to memory of 3768 844 rundll32.exe 84 PID 3768 wrote to memory of 3328 3768 rundll32mgr.exe 85 PID 3768 wrote to memory of 3328 3768 rundll32mgr.exe 85 PID 3328 wrote to memory of 4152 3328 iexplore.exe 86 PID 3328 wrote to memory of 4152 3328 iexplore.exe 86 PID 3328 wrote to memory of 4152 3328 iexplore.exe 86
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\bc9c0e0ebbf2f2f0e5ce6b2907504ecabf46145d1159809d742de6dcaed29dcf.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:5096 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\bc9c0e0ebbf2f2f0e5ce6b2907504ecabf46145d1159809d742de6dcaed29dcf.dll,#12⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:844 -
C:\Windows\SysWOW64\rundll32mgr.exeC:\Windows\SysWOW64\rundll32mgr.exe3⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:3768 -
C:\Program Files\Internet Explorer\iexplore.exe"C:\Program Files\Internet Explorer\iexplore.exe"4⤵
- Modifies Internet Explorer settings
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3328 -
C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE"C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:3328 CREDAT:17410 /prefetch:25⤵
- System Location Discovery: System Language Discovery
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
PID:4152
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Network
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Remote address:8.8.8.8:53Request228.249.119.40.in-addr.arpaIN PTRResponse
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Remote address:8.8.8.8:53Requestapi.bing.comIN AResponseapi.bing.comIN CNAMEapi-bing-com.e-0001.e-msedge.netapi-bing-com.e-0001.e-msedge.netIN CNAMEe-0001.e-msedge.nete-0001.e-msedge.netIN A13.107.5.80
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Remote address:8.8.8.8:53Request74.209.201.84.in-addr.arpaIN PTRResponse
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Remote address:8.8.8.8:53Request140.32.126.40.in-addr.arpaIN PTRResponse
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Remote address:8.8.8.8:53Request95.221.229.192.in-addr.arpaIN PTRResponse
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Remote address:8.8.8.8:53Request154.239.44.20.in-addr.arpaIN PTRResponse
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Remote address:8.8.8.8:53Request149.220.183.52.in-addr.arpaIN PTRResponse
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Remote address:8.8.8.8:53Request149.220.183.52.in-addr.arpaIN PTR
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Remote address:8.8.8.8:53Request149.220.183.52.in-addr.arpaIN PTR
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Remote address:8.8.8.8:53Request149.220.183.52.in-addr.arpaIN PTR
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Remote address:8.8.8.8:53Request133.211.185.52.in-addr.arpaIN PTRResponse
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Remote address:8.8.8.8:53Request200.163.202.172.in-addr.arpaIN PTRResponse
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Remote address:8.8.8.8:53Request241.42.69.40.in-addr.arpaIN PTRResponse
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Remote address:8.8.8.8:53Request161.19.199.152.in-addr.arpaIN PTRResponse
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Remote address:8.8.8.8:53Request200.197.79.204.in-addr.arpaIN PTRResponse200.197.79.204.in-addr.arpaIN PTRa-0001a-msedgenet
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Remote address:8.8.8.8:53Request83.210.23.2.in-addr.arpaIN PTRResponse83.210.23.2.in-addr.arpaIN PTRa2-23-210-83deploystaticakamaitechnologiescom
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Remote address:8.8.8.8:53Request29.243.111.52.in-addr.arpaIN PTRResponse
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73 B 159 B 1 1
DNS Request
228.249.119.40.in-addr.arpa
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58 B 134 B 1 1
DNS Request
api.bing.com
DNS Response
13.107.5.80
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72 B 132 B 1 1
DNS Request
74.209.201.84.in-addr.arpa
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72 B 158 B 1 1
DNS Request
140.32.126.40.in-addr.arpa
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73 B 144 B 1 1
DNS Request
95.221.229.192.in-addr.arpa
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72 B 158 B 1 1
DNS Request
154.239.44.20.in-addr.arpa
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292 B 147 B 4 1
DNS Request
149.220.183.52.in-addr.arpa
DNS Request
149.220.183.52.in-addr.arpa
DNS Request
149.220.183.52.in-addr.arpa
DNS Request
149.220.183.52.in-addr.arpa
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73 B 147 B 1 1
DNS Request
133.211.185.52.in-addr.arpa
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74 B 160 B 1 1
DNS Request
200.163.202.172.in-addr.arpa
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71 B 145 B 1 1
DNS Request
241.42.69.40.in-addr.arpa
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73 B 144 B 1 1
DNS Request
161.19.199.152.in-addr.arpa
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73 B 106 B 1 1
DNS Request
200.197.79.204.in-addr.arpa
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70 B 133 B 1 1
DNS Request
83.210.23.2.in-addr.arpa
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72 B 158 B 1 1
DNS Request
29.243.111.52.in-addr.arpa
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776
Filesize471B
MD573d8dd7eaa8896905e31f1960f51ece1
SHA1164e031603e75d95091220c5ff0d695547f6d3ae
SHA2569ff75ab638fe252bd0d04aea3f0ce38270ffc8df5db9399f9ea45aaef196dddc
SHA5124879585482992d7ea3ee02775b74592b06daab32a63dc7700dd4da40c45a524f3bcfc2beff928a85563f09ad0438be5b3e458bc3d0cd08ad146d416fec014a04
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776
Filesize404B
MD5f7f212eb5231f56430c97cb9b02c4c5c
SHA18f8afb57c445a51d339260bb9398332d7a2c5da1
SHA2568a42419ed570d25bfd48f089a984f5dd5b3da870c3eff0a07df44d7cbb348533
SHA512020a529034c1e41e265f4ea81a3f78ce2b2a1328122fc2285b2a17660ad1a0cd1daae2ea241710b98b59c2c4314b7848c1ad7c294e06a59d6355090d04c6b36a
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Filesize
17KB
MD55a34cb996293fde2cb7a4ac89587393a
SHA13c96c993500690d1a77873cd62bc639b3a10653f
SHA256c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad
SHA512e1b7d0107733f81937415104e70f68b1be6fd0ca65dccf4ff72637943d44278d3a77f704aedff59d2dbc0d56a609b2590c8ec0dd6bc48ab30f1dad0c07a0a3ee
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Filesize
88KB
MD5fe76e62c9c90a4bea8f2c464dc867719
SHA1f0935e8b6c22dea5c6e9d4127f5c10363deba541
SHA2565705c47b229c893f67741480ed5e3bce60597b2bb0dd755fb1f499a23888d7d6
SHA5127d6d5bfb10df493ffea7132807be417b5a283d34a1cd49042390b2b927691fd53ecf8eee459c727844395f34e4230b2cd85b38b7fb7df0a3638b244d0c3f6394