Analysis
- max time kernel
94s - max time network
115s - platform
windows10-2004_x64 - resource
win10v2004-20241007-en - resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system - submitted
09/11/2024, 20:05
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
0ca3c298786daa93f170f92c00481d407ae7b73bcf853c6e2164e4589536f6b8N.dll
Resource
win7-20240903-en
14 signatures
120 seconds
General
- Target 0ca3c298786daa93f170f92c00481d407ae7b73bcf853c6e2164e4589536f6b8N.dll
- Size 310KB
- Sample241109-yt22ea1emb
- SHA256 0ca3c298786daa93f170f92c00481d407ae7b73bcf853c6e2164e4589536f6b8
- MD5 b7ff1d3ec122c87b8f41816649017540
- SHA1 3d4c3e443e6fdcc5dad576ea6ffad2a1f4b44c13
- SHA512 7dfcede5600bf4e501859ea3860d9ea75d3a2014934678d3b9236b6e37033a025f9a9b871947f908f5e11b1e45c6d86eb32dde0681316eb80aa9126154214fe7
- SSDEEP 6144:ICIGPj038tAgFMldWNX+VC5dtT9Q7d60K8A7W:dj038t/FMldW423RQ7d60dA7W
- MD5 SHA1 SHA512 SSDEEP
Malware Config
Signatures
- Ramnit family
- Executes dropped EXE 2 IoCs
pid Process 224 rundll32mgr.exe 4576 WaterMark.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/224-12-0x0000000000400000-0x0000000000421000-memory.dmp upx behavioral2/memory/224-10-0x0000000000400000-0x0000000000421000-memory.dmp upx behavioral2/memory/224-14-0x0000000000400000-0x0000000000421000-memory.dmp upx behavioral2/memory/4576-30-0x0000000000400000-0x0000000000421000-memory.dmp upx behavioral2/memory/4576-29-0x0000000000400000-0x0000000000421000-memory.dmp upx behavioral2/memory/224-13-0x0000000000400000-0x0000000000421000-memory.dmp upx behavioral2/memory/224-8-0x0000000000400000-0x0000000000421000-memory.dmp upx behavioral2/memory/224-7-0x0000000000400000-0x0000000000421000-memory.dmp upx behavioral2/memory/224-6-0x0000000000400000-0x0000000000421000-memory.dmp upx behavioral2/memory/4576-37-0x0000000000400000-0x000000000042F000-memory.dmp upx behavioral2/memory/4576-40-0x0000000000400000-0x0000000000421000-memory.dmp upx behavioral2/memory/4576-41-0x0000000000400000-0x0000000000421000-memory.dmp upx - Drops file in Program Files directory 3 IoCs
description ioc Process File opened for modification C:\Program Files (x86)\Microsoft\pxAA88.tmp rundll32mgr.exe File created C:\Program Files (x86)\Microsoft\WaterMark.exe rundll32mgr.exe File opened for modification C:\Program Files (x86)\Microsoft\WaterMark.exe rundll32mgr.exe - Program crash 2 IoCs
pid pid_target Process procid_target 1664 4840 WerFault.exe 83 3564 5028 WerFault.exe 88 - 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 rundll32.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language rundll32mgr.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language WaterMark.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language IEXPLORE.EXE -
description ioc Process Set value (int) \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "3468071495" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "3469790265" IEXPLORE.EXE Set value (str) \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "437947708" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Software\Microsoft\Internet Explorer\Main IEXPLORE.EXE Set value (str) \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\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 (int) \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31142626" IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31142626" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Software\Microsoft\Internet Explorer\VersionManager IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\ iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31142626" IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "3469790265" IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\ iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Software\Microsoft\Internet Explorer\GPU IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "3468071495" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31142626" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Software\Microsoft\Internet Explorer\VersionManager iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Software\Microsoft\Internet Explorer\DomainSuggestion iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Software\Microsoft\Internet Explorer\Main iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Software\Microsoft\Internet Explorer\Main iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{FA411B37-9ED5-11EF-B9B6-EE6C25FCE24B} = "0" iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running" iexplore.exe Set value (data) \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000 iexplore.exe - Suspicious behavior: EnumeratesProcesses 16 IoCs
pid Process 4576 WaterMark.exe 4576 WaterMark.exe 4576 WaterMark.exe 4576 WaterMark.exe 4576 WaterMark.exe 4576 WaterMark.exe 4576 WaterMark.exe 4576 WaterMark.exe 4576 WaterMark.exe 4576 WaterMark.exe 4576 WaterMark.exe 4576 WaterMark.exe 4576 WaterMark.exe 4576 WaterMark.exe 4576 WaterMark.exe 4576 WaterMark.exe - Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 4576 WaterMark.exe - Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 4040 iexplore.exe - Suspicious use of SetWindowsHookEx 6 IoCs
pid Process 4040 iexplore.exe 4040 iexplore.exe 4868 IEXPLORE.EXE 4868 IEXPLORE.EXE 4868 IEXPLORE.EXE 4868 IEXPLORE.EXE - Suspicious use of UnmapMainImage 2 IoCs
pid Process 224 rundll32mgr.exe 4576 WaterMark.exe - Suspicious use of WriteProcessMemory 25 IoCs
description pid Process procid_target PID 4536 wrote to memory of 4840 4536 rundll32.exe 83 PID 4536 wrote to memory of 4840 4536 rundll32.exe 83 PID 4536 wrote to memory of 4840 4536 rundll32.exe 83 PID 4840 wrote to memory of 224 4840 rundll32.exe 84 PID 4840 wrote to memory of 224 4840 rundll32.exe 84 PID 4840 wrote to memory of 224 4840 rundll32.exe 84 PID 224 wrote to memory of 4576 224 rundll32mgr.exe 86 PID 224 wrote to memory of 4576 224 rundll32mgr.exe 86 PID 224 wrote to memory of 4576 224 rundll32mgr.exe 86 PID 4576 wrote to memory of 5028 4576 WaterMark.exe 88 PID 4576 wrote to memory of 5028 4576 WaterMark.exe 88 PID 4576 wrote to memory of 5028 4576 WaterMark.exe 88 PID 4576 wrote to memory of 5028 4576 WaterMark.exe 88 PID 4576 wrote to memory of 5028 4576 WaterMark.exe 88 PID 4576 wrote to memory of 5028 4576 WaterMark.exe 88 PID 4576 wrote to memory of 5028 4576 WaterMark.exe 88 PID 4576 wrote to memory of 5028 4576 WaterMark.exe 88 PID 4576 wrote to memory of 5028 4576 WaterMark.exe 88 PID 4576 wrote to memory of 4040 4576 WaterMark.exe 97 PID 4576 wrote to memory of 4040 4576 WaterMark.exe 97 PID 4576 wrote to memory of 2140 4576 WaterMark.exe 98 PID 4576 wrote to memory of 2140 4576 WaterMark.exe 98 PID 4040 wrote to memory of 4868 4040 iexplore.exe 99 PID 4040 wrote to memory of 4868 4040 iexplore.exe 99 PID 4040 wrote to memory of 4868 4040 iexplore.exe 99
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\0ca3c298786daa93f170f92c00481d407ae7b73bcf853c6e2164e4589536f6b8N.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:4536 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\0ca3c298786daa93f170f92c00481d407ae7b73bcf853c6e2164e4589536f6b8N.dll,#12⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4840 -
C:\Windows\SysWOW64\rundll32mgr.exeC:\Windows\SysWOW64\rundll32mgr.exe3⤵
- Executes dropped EXE
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:224 -
C:\Program Files (x86)\Microsoft\WaterMark.exe"C:\Program Files (x86)\Microsoft\WaterMark.exe"4⤵
- 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:4576 -
C:\Windows\SysWOW64\svchost.exeC:\Windows\system32\svchost.exe5⤵PID:5028
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 5028 -s 2046⤵
- Program crash
PID:3564
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C:\Program Files\Internet Explorer\iexplore.exe"C:\Program Files\Internet Explorer\iexplore.exe"5⤵
- Modifies Internet Explorer settings
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4040 -
C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE"C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:4040 CREDAT:17410 /prefetch:26⤵
- System Location Discovery: System Language Discovery
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
PID:4868
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C:\Program Files\Internet Explorer\iexplore.exe"C:\Program Files\Internet Explorer\iexplore.exe"5⤵
- Modifies Internet Explorer settings
PID:2140
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4840 -s 6083⤵
- Program crash
PID:1664
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4840 -ip 48401⤵PID:4416
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 5028 -ip 50281⤵PID:32
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776
- Size 471B
- SHA256 a231a95c194f54c33eef59babf53d979f0342fbc68bc52dbb524887fd378418d
- MD5 042619486a0f512d0313c7b4fa6c9756
- SHA1 9a3f09247b4b03933f23331b4f0207672c93e02a
- SHA512 4b2b32d754d116b0609ca43b9ff54ad72c9e22ddbd617b5c94586a219c297c13823c0c2812937db6b2181382176bba46b2f3d37b4b29ae6f171e01ada216c257
- MD5 SHA1 SHA512
- Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776
- Size 404B
- SHA256 87473bb23ea0a4b07455ac3698ef523f4507a2fef96f25cae40a3c50073ab0b3
- MD5 d7cf835eaa7c01537f9f6111c31933df
- SHA1 398676206da67e59ef01713450c65ca13995d418
- SHA512 6ab75914f6169b1018f65466b5af66cf360f0df0ab4f6718d9f6de5258e7d48f4c90f55fb853dcc0006b592e4debb26d6d326718e7d4b85bb7a37e6525f5cfc5
- MD5 SHA1 SHA512
- Path C:\Users\Admin\AppData\Local\Microsoft\Internet Explorer\VersionManager\ver2E2F.tmp
- Size 15KB
- SHA256 557472aeaebf4c1c800b9df14c190f66d62cbabb011300dbedde2dcddd27a6c1
- MD5 1a545d0052b581fbb2ab4c52133846bc
- SHA1 62f3266a9b9925cd6d98658b92adec673cbe3dd3
- SHA512 bd326d111589d87cd6d019378ec725ac9ac7ad4c36f22453941f7d52f90b747ede4783a83dfff6cae1b3bb46690ad49cffa77f2afda019b22863ac485b406e8d
- SSDEEP 384:79Jv9DF9/C9qc9/J9V791T9TK9Xf9Nm9xQ95a9BR9fV:79Jv9DF9/C9qc9/J9V791T9TK9Xf9NmT
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\9MFSIIMR\suggestions[1].en-US
- Size 17KB
- SHA256 c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad
- MD5 5a34cb996293fde2cb7a4ac89587393a
- SHA1 3c96c993500690d1a77873cd62bc639b3a10653f
- SHA512 e1b7d0107733f81937415104e70f68b1be6fd0ca65dccf4ff72637943d44278d3a77f704aedff59d2dbc0d56a609b2590c8ec0dd6bc48ab30f1dad0c07a0a3ee
- SSDEEP 384:K4gN8sGygaEKfWYSJUKbO7UckxtBjCdY7mO3D0C5l+piEieDSV126ry1/XSGKwG3:K4gNFXiKfWfJ1Kockxbd7mAt5Mp5ie2F
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Windows\SysWOW64\rundll32mgr.exe
- Size 143KB
- SHA256 be71c16ee9e9ea295cf6f266ddf343c4589843e4288a09f60f9e15923d8f8313
- MD5 963056968f712dce49fed780756eafa3
- SHA1 1f833526e877d34bda4b7aad52be1b52f25c9bf2
- SHA512 8ff2bd3c17e6a8730940dcc45faa600c5429a1e5e812821350d8c6448ddcc1526f5246608b5a56592276b15a821a78440adf05652c7dfb2b0016707dce9c958e
- SSDEEP 1536:JVZnxm6MG9xgfrvEaoiT/GyphjXDYjKwttoswRmhApEwMTkRA3NpsnAj9VYwqy/q:5nxwgxgfR/DVG7wBpEwnRA3NensYxQo
- MD5 SHA1 SHA512 SSDEEP