Analysis
-
max time kernel
140s -
max time network
142s -
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 20:24
Static task
static1
Behavioral task
behavioral1
Sample
59f36aa0e3a01f7e34c2546d6cb3599816e33b00a9dbd463034855222701ee74.exe
Resource
win7-20241010-en
General
-
Target
59f36aa0e3a01f7e34c2546d6cb3599816e33b00a9dbd463034855222701ee74.exe
-
Size
1.2MB
-
MD5
765300b7535782312c8dd530a74e96e5
-
SHA1
e0bf77dae75ce7f5282d2a7764aec23867310d8e
-
SHA256
59f36aa0e3a01f7e34c2546d6cb3599816e33b00a9dbd463034855222701ee74
-
SHA512
9c1c752b8074f049a0d91d0826f3f047954334b8e62e1d70e604cb95b90f10af9a8dad594c984f13d5cea49ba26ead850c2a6e51d36bb54783dfa2f24053c602
-
SSDEEP
24576:4gzuttW+pK5Iqj6s/RnIwPjecImm5oCmXT9ow4aDGvYw6:3ubW+pnqj6s5n/je2XTew1GvI
Malware Config
Signatures
-
Ramnit family
-
Executes dropped EXE 2 IoCs
pid Process 3140 59f36aa0e3a01f7e34c2546d6cb3599816e33b00a9dbd463034855222701ee74Srv.exe 436 DesktopLayer.exe -
resource yara_rule behavioral2/files/0x000a000000023cad-3.dat upx behavioral2/memory/3140-6-0x0000000000400000-0x000000000042E000-memory.dmp upx behavioral2/memory/436-14-0x0000000000400000-0x000000000042E000-memory.dmp upx behavioral2/memory/436-15-0x0000000000400000-0x000000000042E000-memory.dmp upx -
Drops file in Program Files directory 3 IoCs
description ioc Process File opened for modification C:\Program Files (x86)\Microsoft\pxD68A.tmp 59f36aa0e3a01f7e34c2546d6cb3599816e33b00a9dbd463034855222701ee74Srv.exe File created C:\Program Files (x86)\Microsoft\DesktopLayer.exe 59f36aa0e3a01f7e34c2546d6cb3599816e33b00a9dbd463034855222701ee74Srv.exe File opened for modification C:\Program Files (x86)\Microsoft\DesktopLayer.exe 59f36aa0e3a01f7e34c2546d6cb3599816e33b00a9dbd463034855222701ee74Srv.exe -
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 59f36aa0e3a01f7e34c2546d6cb3599816e33b00a9dbd463034855222701ee74.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 59f36aa0e3a01f7e34c2546d6cb3599816e33b00a9dbd463034855222701ee74Srv.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language DesktopLayer.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language IEXPLORE.EXE -
description ioc Process Set value (int) \REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Software\Microsoft\Internet Explorer\DomainSuggestion iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running" iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Software\Microsoft\Internet Explorer\VersionManager iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31142629" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\ iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{AB776E6B-9ED8-11EF-BDBF-DEEFF298442C} = "0" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Software\Microsoft\Internet Explorer\GPU IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31142629" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "2148107020" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "2148107020" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive iexplore.exe Set value (data) \REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000 iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Software\Microsoft\Internet Explorer\VersionManager IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\ iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Software\Microsoft\Internet Explorer\Main IEXPLORE.EXE Set value (str) \REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\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-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "2154200496" IEXPLORE.EXE Set value (str) \REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Software\Microsoft\Internet Explorer\Main iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31142629" IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "437948865" iexplore.exe -
Suspicious behavior: EnumeratesProcesses 8 IoCs
pid Process 436 DesktopLayer.exe 436 DesktopLayer.exe 436 DesktopLayer.exe 436 DesktopLayer.exe 436 DesktopLayer.exe 436 DesktopLayer.exe 436 DesktopLayer.exe 436 DesktopLayer.exe -
Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 3564 iexplore.exe -
Suspicious use of SetWindowsHookEx 4 IoCs
pid Process 3564 iexplore.exe 3564 iexplore.exe 3596 IEXPLORE.EXE 3596 IEXPLORE.EXE -
Suspicious use of WriteProcessMemory 11 IoCs
description pid Process procid_target PID 2356 wrote to memory of 3140 2356 59f36aa0e3a01f7e34c2546d6cb3599816e33b00a9dbd463034855222701ee74.exe 83 PID 2356 wrote to memory of 3140 2356 59f36aa0e3a01f7e34c2546d6cb3599816e33b00a9dbd463034855222701ee74.exe 83 PID 2356 wrote to memory of 3140 2356 59f36aa0e3a01f7e34c2546d6cb3599816e33b00a9dbd463034855222701ee74.exe 83 PID 3140 wrote to memory of 436 3140 59f36aa0e3a01f7e34c2546d6cb3599816e33b00a9dbd463034855222701ee74Srv.exe 84 PID 3140 wrote to memory of 436 3140 59f36aa0e3a01f7e34c2546d6cb3599816e33b00a9dbd463034855222701ee74Srv.exe 84 PID 3140 wrote to memory of 436 3140 59f36aa0e3a01f7e34c2546d6cb3599816e33b00a9dbd463034855222701ee74Srv.exe 84 PID 436 wrote to memory of 3564 436 DesktopLayer.exe 85 PID 436 wrote to memory of 3564 436 DesktopLayer.exe 85 PID 3564 wrote to memory of 3596 3564 iexplore.exe 86 PID 3564 wrote to memory of 3596 3564 iexplore.exe 86 PID 3564 wrote to memory of 3596 3564 iexplore.exe 86
Processes
-
C:\Users\Admin\AppData\Local\Temp\59f36aa0e3a01f7e34c2546d6cb3599816e33b00a9dbd463034855222701ee74.exe"C:\Users\Admin\AppData\Local\Temp\59f36aa0e3a01f7e34c2546d6cb3599816e33b00a9dbd463034855222701ee74.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2356 -
C:\Users\Admin\AppData\Local\Temp\59f36aa0e3a01f7e34c2546d6cb3599816e33b00a9dbd463034855222701ee74Srv.exeC:\Users\Admin\AppData\Local\Temp\59f36aa0e3a01f7e34c2546d6cb3599816e33b00a9dbd463034855222701ee74Srv.exe2⤵
- Executes dropped EXE
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3140 -
C:\Program Files (x86)\Microsoft\DesktopLayer.exe"C:\Program Files (x86)\Microsoft\DesktopLayer.exe"3⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:436 -
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:3564 -
C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE"C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:3564 CREDAT:17410 /prefetch:25⤵
- System Location Discovery: System Language Discovery
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
PID:3596
-
-
-
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
-
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776
Filesize471B
MD5042619486a0f512d0313c7b4fa6c9756
SHA19a3f09247b4b03933f23331b4f0207672c93e02a
SHA256a231a95c194f54c33eef59babf53d979f0342fbc68bc52dbb524887fd378418d
SHA5124b2b32d754d116b0609ca43b9ff54ad72c9e22ddbd617b5c94586a219c297c13823c0c2812937db6b2181382176bba46b2f3d37b4b29ae6f171e01ada216c257
-
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776
Filesize404B
MD531554088d994a4240e04cb652f1dc0c5
SHA16015931d2508f327c651daba1812db321122e24f
SHA256cfbb898a42542437bb00e57c32189b92778d285213805de9142a577a9928e75b
SHA51222c859c99c56d758943b284e4850b941c4f854597b3683562c5d85eb02dfc94bd1700b934e783eb49b1496a9698493f0f76eacb6d0b6c0faa187712d85d8a74b
-
Filesize
17KB
MD55a34cb996293fde2cb7a4ac89587393a
SHA13c96c993500690d1a77873cd62bc639b3a10653f
SHA256c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad
SHA512e1b7d0107733f81937415104e70f68b1be6fd0ca65dccf4ff72637943d44278d3a77f704aedff59d2dbc0d56a609b2590c8ec0dd6bc48ab30f1dad0c07a0a3ee
-
C:\Users\Admin\AppData\Local\Temp\59f36aa0e3a01f7e34c2546d6cb3599816e33b00a9dbd463034855222701ee74Srv.exe
Filesize55KB
MD5ff5e1f27193ce51eec318714ef038bef
SHA1b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6
SHA256fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320
SHA512c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a