Analysis
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max time kernel
115s -
max time network
119s -
platform
windows10-2004_x64 -
resource
win10v2004-20240802-en -
resource tags
arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system -
submitted
21-09-2024 08:18
Static task
static1
Behavioral task
behavioral1
Sample
2e08fe695a58e1430e7425bfc093df2e723f3a3f982d585584ce198c646ebe89N.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
2e08fe695a58e1430e7425bfc093df2e723f3a3f982d585584ce198c646ebe89N.exe
Resource
win10v2004-20240802-en
General
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Target
2e08fe695a58e1430e7425bfc093df2e723f3a3f982d585584ce198c646ebe89N.exe
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Size
70KB
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MD5
0f42ebc2d3d4ffb179abb3101cb8b8c0
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SHA1
a8893cde6977ffce74282bfcb76e8a666d54c8a9
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SHA256
2e08fe695a58e1430e7425bfc093df2e723f3a3f982d585584ce198c646ebe89
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SHA512
e4264bf273dbed238000ef446aaf3d40ba9348d2f23fc0b8783821bf0bbfa099ccf34173433b0f46823cd01952e697148a0fe52aa989e9cf10020f63ebdd3c4e
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SSDEEP
768:urItKyw5WHXfQmjIiIk9ecAaHSHMb96FyXRDLdXDffff3lkkkmp:ur3Z5IfQmv81ayo2yXpZXX
Malware Config
Signatures
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Sets file to hidden 1 TTPs 1 IoCs
Modifies file attributes to stop it showing in Explorer etc.
pid Process 640 attrib.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-2170637797-568393320-3232933035-1000\Control Panel\International\Geo\Nation 2e08fe695a58e1430e7425bfc093df2e723f3a3f982d585584ce198c646ebe89N.exe -
Executes dropped EXE 1 IoCs
pid Process 3664 mewhost.exe -
Indicator Removal: File Deletion 1 TTPs
Adversaries may delete files left behind by the actions of their intrusion activity.
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Drops file in Windows directory 3 IoCs
description ioc Process File created C:\Windows\Debug\mewhost.exe 2e08fe695a58e1430e7425bfc093df2e723f3a3f982d585584ce198c646ebe89N.exe File opened for modification C:\Windows\Debug\mewhost.exe 2e08fe695a58e1430e7425bfc093df2e723f3a3f982d585584ce198c646ebe89N.exe File opened for modification C:\Windows\Debug\mewhost.exe attrib.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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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 mewhost.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language attrib.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cmd.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 2e08fe695a58e1430e7425bfc093df2e723f3a3f982d585584ce198c646ebe89N.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeIncBasePriorityPrivilege 2280 2e08fe695a58e1430e7425bfc093df2e723f3a3f982d585584ce198c646ebe89N.exe -
Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 2280 wrote to memory of 640 2280 2e08fe695a58e1430e7425bfc093df2e723f3a3f982d585584ce198c646ebe89N.exe 89 PID 2280 wrote to memory of 640 2280 2e08fe695a58e1430e7425bfc093df2e723f3a3f982d585584ce198c646ebe89N.exe 89 PID 2280 wrote to memory of 640 2280 2e08fe695a58e1430e7425bfc093df2e723f3a3f982d585584ce198c646ebe89N.exe 89 PID 2280 wrote to memory of 3832 2280 2e08fe695a58e1430e7425bfc093df2e723f3a3f982d585584ce198c646ebe89N.exe 92 PID 2280 wrote to memory of 3832 2280 2e08fe695a58e1430e7425bfc093df2e723f3a3f982d585584ce198c646ebe89N.exe 92 PID 2280 wrote to memory of 3832 2280 2e08fe695a58e1430e7425bfc093df2e723f3a3f982d585584ce198c646ebe89N.exe 92 -
Views/modifies file attributes 1 TTPs 1 IoCs
pid Process 640 attrib.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\2e08fe695a58e1430e7425bfc093df2e723f3a3f982d585584ce198c646ebe89N.exe"C:\Users\Admin\AppData\Local\Temp\2e08fe695a58e1430e7425bfc093df2e723f3a3f982d585584ce198c646ebe89N.exe"1⤵
- Checks computer location settings
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2280 -
C:\Windows\SysWOW64\attrib.exeattrib +a +s +h +r C:\Windows\Debug\mewhost.exe2⤵
- Sets file to hidden
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Views/modifies file attributes
PID:640
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\2E08FE~1.EXE > nul2⤵
- System Location Discovery: System Language Discovery
PID:3832
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C:\Windows\Debug\mewhost.exeC:\Windows\Debug\mewhost.exe1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:3664
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C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=3840,i,11391966286255097843,10588851088187498028,262144 --variations-seed-version --mojo-platform-channel-handle=4352 /prefetch:81⤵PID:2076
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
70KB
MD503b802db4b9e4519df06524683f3a381
SHA1628c16ea48d01c1763a4fe555eb3df110bf8a5ec
SHA25639bcd206f99cb8b7b1cb6ffe66cedabb8a78de03626062008409a20c6ad24773
SHA51218b32ec114df316bbb8652eb0442b09372b5ace36fffd72069858954242ab450bbfc1fac780a04a5298720ffef7d22c160afba2de2c65aa076c3105b738381da