Analysis
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max time kernel
92s -
max time network
144s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
14-01-2025 21:18
Static task
static1
Behavioral task
behavioral1
Sample
23a03d0ad48af12f1a53d9b7c4a8740baa69a4aafbe87050d96553f53816c3b6.exe
Resource
win7-20240903-en
General
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Target
23a03d0ad48af12f1a53d9b7c4a8740baa69a4aafbe87050d96553f53816c3b6.exe
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Size
95KB
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MD5
0e9026f2988641f4851a1f6fc7ffdb81
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SHA1
e362f3b90be4f10de448ce97a8d0a6f35fa4f466
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SHA256
23a03d0ad48af12f1a53d9b7c4a8740baa69a4aafbe87050d96553f53816c3b6
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SHA512
c1c5d15d96f629bb000702765363253f474c7471f522c1d75c30ed5148bb92947fced4ffdf0a518fd8249ee23c89e360fc8488d34828309b96540b41971c5bb0
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SSDEEP
768:j06R0UKzOgnKqGR7//GPc0LOBhvBrHks3IiyhDYQbGmxlNaM+WGa1wuxnzgOYw9Y:hR0vxn3Pc0LCH9MtbvabUDzJYWu3B
Malware Config
Signatures
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Ramnit family
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Executes dropped EXE 1 IoCs
pid Process 3992 WaterMark.exe -
resource yara_rule behavioral2/memory/4636-8-0x0000000000400000-0x0000000000421000-memory.dmp upx behavioral2/memory/3992-21-0x0000000000400000-0x0000000000439000-memory.dmp upx behavioral2/memory/3992-26-0x0000000000400000-0x0000000000421000-memory.dmp upx behavioral2/memory/3992-25-0x0000000000400000-0x0000000000421000-memory.dmp upx behavioral2/memory/4636-10-0x0000000000400000-0x0000000000421000-memory.dmp upx behavioral2/memory/4636-9-0x0000000000400000-0x0000000000421000-memory.dmp upx behavioral2/memory/4636-6-0x0000000000400000-0x0000000000421000-memory.dmp upx behavioral2/memory/4636-5-0x0000000000400000-0x0000000000421000-memory.dmp upx behavioral2/memory/4636-4-0x0000000000400000-0x0000000000421000-memory.dmp upx behavioral2/memory/4636-3-0x0000000000400000-0x0000000000421000-memory.dmp upx behavioral2/memory/3992-34-0x0000000000400000-0x0000000000421000-memory.dmp upx behavioral2/memory/3992-33-0x0000000000400000-0x0000000000421000-memory.dmp upx behavioral2/memory/3992-35-0x0000000000400000-0x0000000000421000-memory.dmp upx behavioral2/memory/3992-37-0x0000000000400000-0x0000000000421000-memory.dmp upx behavioral2/memory/3992-40-0x0000000000400000-0x0000000000421000-memory.dmp upx -
Drops file in Program Files directory 3 IoCs
description ioc Process File opened for modification C:\Program Files (x86)\Microsoft\px8201.tmp 23a03d0ad48af12f1a53d9b7c4a8740baa69a4aafbe87050d96553f53816c3b6.exe File created C:\Program Files (x86)\Microsoft\WaterMark.exe 23a03d0ad48af12f1a53d9b7c4a8740baa69a4aafbe87050d96553f53816c3b6.exe File opened for modification C:\Program Files (x86)\Microsoft\WaterMark.exe 23a03d0ad48af12f1a53d9b7c4a8740baa69a4aafbe87050d96553f53816c3b6.exe -
Program crash 1 IoCs
pid pid_target Process procid_target 4260 1152 WerFault.exe 84 -
System Location Discovery: System Language Discovery 1 TTPs 4 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 WaterMark.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language IEXPLORE.EXE Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language IEXPLORE.EXE Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 23a03d0ad48af12f1a53d9b7c4a8740baa69a4aafbe87050d96553f53816c3b6.exe -
description ioc Process 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 Key created \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery iexplore.exe Set value (data) \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff3e0000003e000000c4040000a3020000 iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "3861175688" IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Software\Microsoft\Internet Explorer\VersionManager IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{117D52C5-D2BD-11EF-B319-CE95CE932DF6} = "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 (data) \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000 iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31155913" 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\DomainSuggestion\NextUpdateDate = "443654471" 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 Key created \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch 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 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 = "3860081315" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31155913" 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\FileNames 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\Main\CompatibilityFlags = "0" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "1" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Software\Microsoft\Internet Explorer\VersionManager iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31155913" IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch 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\LastCheckForUpdateHighDateTime = "31155913" 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\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\Recovery\AdminActive\{117AF061-D2BD-11EF-B319-CE95CE932DF6} = "0" 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 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\Recovery\PendingRecovery\AdminActive = "1" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "3859925162" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "3870550300" IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Software\Microsoft\Internet Explorer\Main iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Software\Microsoft\Internet Explorer\GPU 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\Main\FullScreen = "no" 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 -
Suspicious behavior: EnumeratesProcesses 16 IoCs
pid Process 3992 WaterMark.exe 3992 WaterMark.exe 3992 WaterMark.exe 3992 WaterMark.exe 3992 WaterMark.exe 3992 WaterMark.exe 3992 WaterMark.exe 3992 WaterMark.exe 3992 WaterMark.exe 3992 WaterMark.exe 3992 WaterMark.exe 3992 WaterMark.exe 3992 WaterMark.exe 3992 WaterMark.exe 3992 WaterMark.exe 3992 WaterMark.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 3992 WaterMark.exe -
Suspicious use of FindShellTrayWindow 2 IoCs
pid Process 1108 iexplore.exe 3548 iexplore.exe -
Suspicious use of SetWindowsHookEx 10 IoCs
pid Process 1108 iexplore.exe 1108 iexplore.exe 3548 iexplore.exe 3548 iexplore.exe 1224 IEXPLORE.EXE 1224 IEXPLORE.EXE 1928 IEXPLORE.EXE 1928 IEXPLORE.EXE 1224 IEXPLORE.EXE 1224 IEXPLORE.EXE -
Suspicious use of UnmapMainImage 2 IoCs
pid Process 4636 23a03d0ad48af12f1a53d9b7c4a8740baa69a4aafbe87050d96553f53816c3b6.exe 3992 WaterMark.exe -
Suspicious use of WriteProcessMemory 22 IoCs
description pid Process procid_target PID 4636 wrote to memory of 3992 4636 23a03d0ad48af12f1a53d9b7c4a8740baa69a4aafbe87050d96553f53816c3b6.exe 83 PID 4636 wrote to memory of 3992 4636 23a03d0ad48af12f1a53d9b7c4a8740baa69a4aafbe87050d96553f53816c3b6.exe 83 PID 4636 wrote to memory of 3992 4636 23a03d0ad48af12f1a53d9b7c4a8740baa69a4aafbe87050d96553f53816c3b6.exe 83 PID 3992 wrote to memory of 1152 3992 WaterMark.exe 84 PID 3992 wrote to memory of 1152 3992 WaterMark.exe 84 PID 3992 wrote to memory of 1152 3992 WaterMark.exe 84 PID 3992 wrote to memory of 1152 3992 WaterMark.exe 84 PID 3992 wrote to memory of 1152 3992 WaterMark.exe 84 PID 3992 wrote to memory of 1152 3992 WaterMark.exe 84 PID 3992 wrote to memory of 1152 3992 WaterMark.exe 84 PID 3992 wrote to memory of 1152 3992 WaterMark.exe 84 PID 3992 wrote to memory of 1152 3992 WaterMark.exe 84 PID 3992 wrote to memory of 3548 3992 WaterMark.exe 89 PID 3992 wrote to memory of 3548 3992 WaterMark.exe 89 PID 3992 wrote to memory of 1108 3992 WaterMark.exe 90 PID 3992 wrote to memory of 1108 3992 WaterMark.exe 90 PID 1108 wrote to memory of 1224 1108 iexplore.exe 92 PID 1108 wrote to memory of 1224 1108 iexplore.exe 92 PID 1108 wrote to memory of 1224 1108 iexplore.exe 92 PID 3548 wrote to memory of 1928 3548 iexplore.exe 93 PID 3548 wrote to memory of 1928 3548 iexplore.exe 93 PID 3548 wrote to memory of 1928 3548 iexplore.exe 93
Processes
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C:\Users\Admin\AppData\Local\Temp\23a03d0ad48af12f1a53d9b7c4a8740baa69a4aafbe87050d96553f53816c3b6.exe"C:\Users\Admin\AppData\Local\Temp\23a03d0ad48af12f1a53d9b7c4a8740baa69a4aafbe87050d96553f53816c3b6.exe"1⤵
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:4636 -
C:\Program Files (x86)\Microsoft\WaterMark.exe"C:\Program Files (x86)\Microsoft\WaterMark.exe"2⤵
- 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:3992 -
C:\Windows\SysWOW64\svchost.exeC:\Windows\system32\svchost.exe3⤵PID:1152
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1152 -s 2044⤵
- Program crash
PID:4260
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C:\Program Files\Internet Explorer\iexplore.exe"C:\Program Files\Internet Explorer\iexplore.exe"3⤵
- Modifies Internet Explorer settings
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3548 -
C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE"C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:3548 CREDAT:17410 /prefetch:24⤵
- System Location Discovery: System Language Discovery
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
PID:1928
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C:\Program Files\Internet Explorer\iexplore.exe"C:\Program Files\Internet Explorer\iexplore.exe"3⤵
- Modifies Internet Explorer settings
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1108 -
C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE"C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1108 CREDAT:17410 /prefetch:24⤵
- System Location Discovery: System Language Discovery
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
PID:1224
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1152 -ip 11521⤵PID:4980
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
95KB
MD50e9026f2988641f4851a1f6fc7ffdb81
SHA1e362f3b90be4f10de448ce97a8d0a6f35fa4f466
SHA25623a03d0ad48af12f1a53d9b7c4a8740baa69a4aafbe87050d96553f53816c3b6
SHA512c1c5d15d96f629bb000702765363253f474c7471f522c1d75c30ed5148bb92947fced4ffdf0a518fd8249ee23c89e360fc8488d34828309b96540b41971c5bb0
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776
Filesize471B
MD5fdba1e1aaafa78dc1bc5319f2afb6f86
SHA15432b1fa5f940052c9f9117307b2c97a7950cab2
SHA25683c001e05993c8e603aec23cc4fa21a1515943496a69e18ab4a1196294b5354d
SHA512ad7a1db5d9f4ac4edc07dfaacd2dd5aa15d8e228b2e096f9add822e4be84c66db28729583f9fdd5ae4f20fe685854cf2c35ced250a19df3b001c7b563c78a13e
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776
Filesize404B
MD50b6e34441aa5d3c476a716d57d95a015
SHA19ea41ea3305366344f58ff92f61ef42ce3d36984
SHA2562c42edb6f32caac78d009c5c13c384ba71635a68db808b8d34121f026006847f
SHA5122a8e796aab17bc4b03f51af10eb8d8463e83be99b5213cc0402f4745553ea0917af9d07788ae8eab5519e8f7180a7b213dc7f0c2c7418cda4d80a6d2a4461812
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C:\Users\Admin\AppData\Local\Microsoft\Internet Explorer\Recovery\High\Active\RecoveryStore.{117AF061-D2BD-11EF-B319-CE95CE932DF6}.dat
Filesize3KB
MD51767c3221ca9294ee46ab766ad79c760
SHA1ff14b69b0ecb8ab132fc23a6b531d6a7396d4e7b
SHA25628f8d961d3d55b880dbaca1888bacfc271cbf7dd4e2da1ca350e821564b1973d
SHA512d8037cbef9c23f9bd4458ff6e29264b1b190a67567f31aea4a8d6c80e92dc454d45bd3d757c36f29e8fc45178d114c5ecdad6100176b595373c8ad96ed03abfc
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C:\Users\Admin\AppData\Local\Microsoft\Internet Explorer\Recovery\High\Active\RecoveryStore.{117D52C5-D2BD-11EF-B319-CE95CE932DF6}.dat
Filesize5KB
MD51161e4a7131dcf94f8db08d0e428eb4d
SHA10b6292a0a34a6bf362c835bc106c214105b328ed
SHA256b86f88fe889a5c58f5783d394d2cfa1599b934a758e8636d69caba0a4a049f69
SHA5129fe7adde614dc4fb5519bff3cbc327a185b19fe603e81171af7f8e961c95f34fae640f3dc950ef11e986644a5b21974d1b42a0c108c232ea929111d81588c713
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Filesize
17KB
MD55a34cb996293fde2cb7a4ac89587393a
SHA13c96c993500690d1a77873cd62bc639b3a10653f
SHA256c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad
SHA512e1b7d0107733f81937415104e70f68b1be6fd0ca65dccf4ff72637943d44278d3a77f704aedff59d2dbc0d56a609b2590c8ec0dd6bc48ab30f1dad0c07a0a3ee