Analysis
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max time kernel
126s -
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
19-12-2024 21:58
Behavioral task
behavioral1
Sample
Sigma.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
Sigma.exe
Resource
win10v2004-20241007-en
General
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Target
Sigma.exe
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Size
839KB
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MD5
50c30c48da78a5da6c3930deeab5c162
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SHA1
8ce696d3f74a75f99d3c29a107d940eba35cd13f
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SHA256
bd0bf0ab2a105a60f009019c56aafdc6dafcd7a45f8ab1a585a5bc5d1625b716
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SHA512
60175eaf8b6a895aa9bdc38ae00d30f83855f52457b120241bba9fcd8d83f5637aee55aa9993e034c3ea4f2310426ea04d69c15835375dd3915e39169def0809
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SSDEEP
24576:nmIS04YNEMuExDiU6E5R9s8xY/2l/detnIbt+rx:mQ4auS+UjfU2TedIbt+r
Malware Config
Signatures
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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-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation Sigma.exe -
Executes dropped EXE 1 IoCs
pid Process 3180 AudioDriver.exe -
Drops desktop.ini file(s) 2 IoCs
description ioc Process File opened for modification C:\Windows\assembly\Desktop.ini Sigma.exe File created C:\Windows\assembly\Desktop.ini Sigma.exe -
Drops file in Windows directory 3 IoCs
description ioc Process File opened for modification C:\Windows\assembly\Desktop.ini Sigma.exe File opened for modification C:\Windows\assembly Sigma.exe File created C:\Windows\assembly\Desktop.ini Sigma.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 2 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 Sigma.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language AudioDriver.exe -
Enumerates system info in registry 2 TTPs 3 IoCs
description ioc Process Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS msedge.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemManufacturer msedge.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemProductName msedge.exe -
Suspicious behavior: EnumeratesProcesses 9 IoCs
pid Process 3180 AudioDriver.exe 3180 AudioDriver.exe 3180 AudioDriver.exe 3336 msedge.exe 3336 msedge.exe 924 msedge.exe 924 msedge.exe 5024 identity_helper.exe 5024 identity_helper.exe -
Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 8 IoCs
pid Process 924 msedge.exe 924 msedge.exe 924 msedge.exe 924 msedge.exe 924 msedge.exe 924 msedge.exe 924 msedge.exe 924 msedge.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 3180 AudioDriver.exe -
Suspicious use of FindShellTrayWindow 27 IoCs
pid Process 3180 AudioDriver.exe 924 msedge.exe 924 msedge.exe 924 msedge.exe 924 msedge.exe 924 msedge.exe 924 msedge.exe 924 msedge.exe 924 msedge.exe 924 msedge.exe 924 msedge.exe 924 msedge.exe 924 msedge.exe 924 msedge.exe 924 msedge.exe 924 msedge.exe 924 msedge.exe 924 msedge.exe 924 msedge.exe 924 msedge.exe 924 msedge.exe 924 msedge.exe 924 msedge.exe 924 msedge.exe 924 msedge.exe 924 msedge.exe 924 msedge.exe -
Suspicious use of SendNotifyMessage 25 IoCs
pid Process 3180 AudioDriver.exe 924 msedge.exe 924 msedge.exe 924 msedge.exe 924 msedge.exe 924 msedge.exe 924 msedge.exe 924 msedge.exe 924 msedge.exe 924 msedge.exe 924 msedge.exe 924 msedge.exe 924 msedge.exe 924 msedge.exe 924 msedge.exe 924 msedge.exe 924 msedge.exe 924 msedge.exe 924 msedge.exe 924 msedge.exe 924 msedge.exe 924 msedge.exe 924 msedge.exe 924 msedge.exe 924 msedge.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 3180 AudioDriver.exe -
Suspicious use of WriteProcessMemory 64 IoCs
description pid Process procid_target PID 1648 wrote to memory of 3180 1648 Sigma.exe 84 PID 1648 wrote to memory of 3180 1648 Sigma.exe 84 PID 1648 wrote to memory of 3180 1648 Sigma.exe 84 PID 924 wrote to memory of 3580 924 msedge.exe 97 PID 924 wrote to memory of 3580 924 msedge.exe 97 PID 924 wrote to memory of 4976 924 msedge.exe 98 PID 924 wrote to memory of 4976 924 msedge.exe 98 PID 924 wrote to memory of 4976 924 msedge.exe 98 PID 924 wrote to memory of 4976 924 msedge.exe 98 PID 924 wrote to memory of 4976 924 msedge.exe 98 PID 924 wrote to memory of 4976 924 msedge.exe 98 PID 924 wrote to memory of 4976 924 msedge.exe 98 PID 924 wrote to memory of 4976 924 msedge.exe 98 PID 924 wrote to memory of 4976 924 msedge.exe 98 PID 924 wrote to memory of 4976 924 msedge.exe 98 PID 924 wrote to memory of 4976 924 msedge.exe 98 PID 924 wrote to memory of 4976 924 msedge.exe 98 PID 924 wrote to memory of 4976 924 msedge.exe 98 PID 924 wrote to memory of 4976 924 msedge.exe 98 PID 924 wrote to memory of 4976 924 msedge.exe 98 PID 924 wrote to memory of 4976 924 msedge.exe 98 PID 924 wrote to memory of 4976 924 msedge.exe 98 PID 924 wrote to memory of 4976 924 msedge.exe 98 PID 924 wrote to memory of 4976 924 msedge.exe 98 PID 924 wrote to memory of 4976 924 msedge.exe 98 PID 924 wrote to memory of 4976 924 msedge.exe 98 PID 924 wrote to memory of 4976 924 msedge.exe 98 PID 924 wrote to memory of 4976 924 msedge.exe 98 PID 924 wrote to memory of 4976 924 msedge.exe 98 PID 924 wrote to memory of 4976 924 msedge.exe 98 PID 924 wrote to memory of 4976 924 msedge.exe 98 PID 924 wrote to memory of 4976 924 msedge.exe 98 PID 924 wrote to memory of 4976 924 msedge.exe 98 PID 924 wrote to memory of 4976 924 msedge.exe 98 PID 924 wrote to memory of 4976 924 msedge.exe 98 PID 924 wrote to memory of 4976 924 msedge.exe 98 PID 924 wrote to memory of 4976 924 msedge.exe 98 PID 924 wrote to memory of 4976 924 msedge.exe 98 PID 924 wrote to memory of 4976 924 msedge.exe 98 PID 924 wrote to memory of 4976 924 msedge.exe 98 PID 924 wrote to memory of 4976 924 msedge.exe 98 PID 924 wrote to memory of 4976 924 msedge.exe 98 PID 924 wrote to memory of 4976 924 msedge.exe 98 PID 924 wrote to memory of 4976 924 msedge.exe 98 PID 924 wrote to memory of 4976 924 msedge.exe 98 PID 924 wrote to memory of 3336 924 msedge.exe 99 PID 924 wrote to memory of 3336 924 msedge.exe 99 PID 924 wrote to memory of 4328 924 msedge.exe 100 PID 924 wrote to memory of 4328 924 msedge.exe 100 PID 924 wrote to memory of 4328 924 msedge.exe 100 PID 924 wrote to memory of 4328 924 msedge.exe 100 PID 924 wrote to memory of 4328 924 msedge.exe 100 PID 924 wrote to memory of 4328 924 msedge.exe 100 PID 924 wrote to memory of 4328 924 msedge.exe 100 PID 924 wrote to memory of 4328 924 msedge.exe 100 PID 924 wrote to memory of 4328 924 msedge.exe 100 PID 924 wrote to memory of 4328 924 msedge.exe 100 PID 924 wrote to memory of 4328 924 msedge.exe 100 PID 924 wrote to memory of 4328 924 msedge.exe 100 PID 924 wrote to memory of 4328 924 msedge.exe 100 PID 924 wrote to memory of 4328 924 msedge.exe 100 PID 924 wrote to memory of 4328 924 msedge.exe 100 PID 924 wrote to memory of 4328 924 msedge.exe 100 PID 924 wrote to memory of 4328 924 msedge.exe 100
Processes
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C:\Users\Admin\AppData\Local\Temp\Sigma.exe"C:\Users\Admin\AppData\Local\Temp\Sigma.exe"1⤵
- Checks computer location settings
- Drops desktop.ini file(s)
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1648 -
C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe"C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe"2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of SetWindowsHookEx
PID:3180
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C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"1⤵
- Enumerates system info in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:924 -
C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=crashpad-handler "--user-data-dir=C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data" /prefetch:7 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad" "--metrics-dir=C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data" --annotation=IsOfficialBuild=1 --annotation=channel= --annotation=chromium-version=92.0.4515.131 "--annotation=exe=C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --annotation=plat=Win64 "--annotation=prod=Microsoft Edge" --annotation=ver=92.0.902.67 --initial-client-data=0x11c,0x120,0x124,0xf8,0x128,0x7ffcd70846f8,0x7ffcd7084708,0x7ffcd70847182⤵PID:3580
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C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=2172,3833884634535170969,2962495354718440239,131072 --gpu-preferences=UAAAAAAAAADgAAAQAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHgAAAAAAAAAeAAAAAAAAAAoAAAABAAAACAAAAAAAAAAKAAAAAAAAAAwAAAAAAAAADgAAAAAAAAAEAAAAAAAAAAAAAAADQAAABAAAAAAAAAAAQAAAA0AAAAQAAAAAAAAAAQAAAANAAAAEAAAAAAAAAAHAAAADQAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=2184 /prefetch:22⤵PID:4976
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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=network.mojom.NetworkService --field-trial-handle=2172,3833884634535170969,2962495354718440239,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=2156 /prefetch:32⤵
- Suspicious behavior: EnumeratesProcesses
PID:3336
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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=storage.mojom.StorageService --field-trial-handle=2172,3833884634535170969,2962495354718440239,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=2752 /prefetch:82⤵PID:4328
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C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2172,3833884634535170969,2962495354718440239,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=6 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=3348 /prefetch:12⤵PID:3444
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C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2172,3833884634535170969,2962495354718440239,131072 --lang=en-US --disable-client-side-phishing-detection --instant-process --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=5 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=3352 /prefetch:12⤵PID:2388
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C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2172,3833884634535170969,2962495354718440239,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=7 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=4824 /prefetch:12⤵PID:3212
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C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2172,3833884634535170969,2962495354718440239,131072 --lang=en-US --disable-client-side-phishing-detection --instant-process --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=8 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=4704 /prefetch:12⤵PID:400
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C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\identity_helper.exe"C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\identity_helper.exe" --type=utility --utility-sub-type=winrt_app_id.mojom.WinrtAppIdService --field-trial-handle=2172,3833884634535170969,2962495354718440239,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=5296 /prefetch:82⤵PID:1112
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C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\identity_helper.exe"C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\identity_helper.exe" --type=utility --utility-sub-type=winrt_app_id.mojom.WinrtAppIdService --field-trial-handle=2172,3833884634535170969,2962495354718440239,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=5296 /prefetch:82⤵
- Suspicious behavior: EnumeratesProcesses
PID:5024
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C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2172,3833884634535170969,2962495354718440239,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=10 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5288 /prefetch:12⤵PID:2704
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C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2172,3833884634535170969,2962495354718440239,131072 --lang=en-US --disable-client-side-phishing-detection --instant-process --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=11 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5388 /prefetch:12⤵PID:412
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C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2172,3833884634535170969,2962495354718440239,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=12 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5292 /prefetch:12⤵PID:3308
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C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2172,3833884634535170969,2962495354718440239,131072 --lang=en-US --disable-client-side-phishing-detection --instant-process --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=14 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=4796 /prefetch:12⤵PID:4408
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C:\Windows\System32\CompPkgSrv.exeC:\Windows\System32\CompPkgSrv.exe -Embedding1⤵PID:4252
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C:\Windows\System32\CompPkgSrv.exeC:\Windows\System32\CompPkgSrv.exe -Embedding1⤵PID:1388
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
152B
MD5f426165d1e5f7df1b7a3758c306cd4ae
SHA159ef728fbbb5c4197600f61daec48556fec651c1
SHA256b68dfc21866d0abe5c75d70acc54670421fa9b26baf98af852768676a901b841
SHA5128d437fcb85acb0705bf080141e7a021740901248985a76299ea8c43e46ad78fb88c738322cf302f6a550caa5e79d85b36827e9b329b1094521b17cf638c015b6
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Filesize
152B
MD56960857d16aadfa79d36df8ebbf0e423
SHA1e1db43bd478274366621a8c6497e270d46c6ed4f
SHA256f40b812ce44e391423eb66602ac0af138a1e948aa8c4116045fef671ef21cd32
SHA5126deb2a63055a643759dd0ae125fb2f68ec04a443dbf8b066a812b42352bbcfa4517382ed0910c190c986a864559c3453c772e153ee2e9432fb2de2e1e49ca7fe
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Filesize
5KB
MD5b2bd3075a93499b04b42170c08642018
SHA1ede41f1fd249d27af5d6ce862dd43b6daafb3eb5
SHA256398ffa3c0a93eb98c12fc4d01a50eb6794007b31c6f0658b88f5f9237b6a2c71
SHA51231276cbb71dafd26200618600f233243221806b7d225340ecc753488d3ea1a330e82f52653c091f8fce9ac1999ce500056c7f6c06e87304f7f2ff2b9d7af917e
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Filesize
6KB
MD53e6607fd88ee49409c2accdeae593305
SHA1a67bd2ed4f20dc111ff373f3a560a8b04afa1528
SHA2565fa8360fb052bcf1e3a2c8a5a75525a3e18fc4853547f6b8af8fee3e233290b2
SHA512ddd6ba3589adf67a16bc586a568477328d381d11daa45e0a59aa8453ecbee201eb849094594c87b1e5c2f54e619a727343a23c8963bd293476f92b7c63d583c1
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Filesize
6KB
MD5116267141e54d2e45bbbb16a5222fcca
SHA1f46131bd5316e4235ce966025a2f5f9a1339ca2a
SHA2569316a7b41e1336e436e9fe0a017a90f707c8e73e510b7b22bce9971243d64f46
SHA51284237feade52a776805afb9adf61c800a29aac769f9a51229cee9eae640e93df3cbdcff5f15b5c1e690f44463d811683175ea70892c926be3ed3a9d14c940285
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Filesize
16B
MD56752a1d65b201c13b62ea44016eb221f
SHA158ecf154d01a62233ed7fb494ace3c3d4ffce08b
SHA2560861415cada612ea5834d56e2cf1055d3e63979b69eb71d32ae9ae394d8306cd
SHA5129cfd838d3fb570b44fc3461623ab2296123404c6c8f576b0de0aabd9a6020840d4c9125eb679ed384170dbcaac2fa30dc7fa9ee5b77d6df7c344a0aa030e0389
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Filesize
10KB
MD5678fa8550c674f2e5ca84506679966e2
SHA18bbb9d23519063953058b3d1cb7d8b23094d7d02
SHA256355cda1a57b04f9415cf66941051ca3d06b7bfe180d7324380adc9238c65017c
SHA512a557f985b6ae798c06530424c4ea45302712c30a08534ad5aa04a5f7dc466de0a0284160e8e4bfbced41d53e9f03a5d0df3b4c4a611680543b75e3580d5570ce
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Filesize
10KB
MD52ce53c94395defa203297efb788e1c79
SHA1be5978587756ef5741fa30bfcb3c6d53a6e6203c
SHA2567cad9c7517e33a0f8df2b9bac8b27c135e8b1e0a5194e95e70d3b2f7653d8725
SHA51251eaf380a28288b9d155cc0ce9789f0421e0b25f7332be0b6b3e8a64a118b06be49872cd1d97a3182dcaaa49af80d1b58db4232f9d6cb17edb241b855a58de71
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Filesize
264KB
MD5f50f89a0a91564d0b8a211f8921aa7de
SHA1112403a17dd69d5b9018b8cede023cb3b54eab7d
SHA256b1e963d702392fb7224786e7d56d43973e9b9efd1b89c17814d7c558ffc0cdec
SHA512bf8cda48cf1ec4e73f0dd1d4fa5562af1836120214edb74957430cd3e4a2783e801fa3f4ed2afb375257caeed4abe958265237d6e0aacf35a9ede7a2e8898d58
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Filesize
839KB
MD550c30c48da78a5da6c3930deeab5c162
SHA18ce696d3f74a75f99d3c29a107d940eba35cd13f
SHA256bd0bf0ab2a105a60f009019c56aafdc6dafcd7a45f8ab1a585a5bc5d1625b716
SHA51260175eaf8b6a895aa9bdc38ae00d30f83855f52457b120241bba9fcd8d83f5637aee55aa9993e034c3ea4f2310426ea04d69c15835375dd3915e39169def0809