Analysis
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max time kernel
149s -
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
04-12-2024 02:01
Static task
static1
Behavioral task
behavioral1
Sample
01de053d9560d419f0b6c35dbddb1175eb1fd7a21450989332024b812d39c4c2.exe
Resource
win7-20240903-en
General
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Target
01de053d9560d419f0b6c35dbddb1175eb1fd7a21450989332024b812d39c4c2.exe
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Size
3.7MB
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MD5
15f259b30ec72a5217144834f7f5b564
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SHA1
baed3fe7d059a497f856e263431ccd3872ef1ea1
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SHA256
01de053d9560d419f0b6c35dbddb1175eb1fd7a21450989332024b812d39c4c2
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SHA512
5e1148a9cf8008b7c38d067ec34e5c3bc7255341d114476532f8111ea2c3e654eb70b0a439aaaea22543576f09b9cec269f9b3414a6a24fc54b89c7c677c5f47
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SSDEEP
98304:ZrAsTIZbqqBQjwske/pCT66UNYekeWY0CE9:ZcCSL0ke/pO5ekeWtCE9
Malware Config
Extracted
quasar
1.4.1
DAVID
hoffmann3.ydns.eu:5829
532aca2b-96ff-44aa-9213-031e975919ac
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encryption_key
C5B555A83D127A9553D4FB1FCECB35CE8E91A447
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install_name
outlooks.exe
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log_directory
Logs
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reconnect_delay
3000
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startup_key
Outlooks
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subdirectory
WindowsUpdates
Signatures
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Quasar family
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Quasar payload 1 IoCs
Processes:
resource yara_rule behavioral2/memory/2428-45-0x0000000000400000-0x0000000000724000-memory.dmp family_quasar -
Command and Scripting Interpreter: PowerShell 1 TTPs 4 IoCs
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
Processes:
powershell.exepowershell.exepowershell.exepowershell.exepid Process 4236 powershell.exe 3864 powershell.exe 5056 powershell.exe 60 powershell.exe -
Checks computer location settings 2 TTPs 2 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
01de053d9560d419f0b6c35dbddb1175eb1fd7a21450989332024b812d39c4c2.exeoutlooks.exedescription ioc Process Key value queried \REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation 01de053d9560d419f0b6c35dbddb1175eb1fd7a21450989332024b812d39c4c2.exe Key value queried \REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation outlooks.exe -
Executes dropped EXE 2 IoCs
Processes:
outlooks.exeoutlooks.exepid Process 1120 outlooks.exe 900 outlooks.exe -
Suspicious use of SetThreadContext 2 IoCs
Processes:
01de053d9560d419f0b6c35dbddb1175eb1fd7a21450989332024b812d39c4c2.exeoutlooks.exedescription pid Process procid_target PID 3144 set thread context of 2428 3144 01de053d9560d419f0b6c35dbddb1175eb1fd7a21450989332024b812d39c4c2.exe 103 PID 1120 set thread context of 900 1120 outlooks.exe 116 -
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 12 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
Processes:
powershell.exe01de053d9560d419f0b6c35dbddb1175eb1fd7a21450989332024b812d39c4c2.exepowershell.exeschtasks.exeoutlooks.exeschtasks.exe01de053d9560d419f0b6c35dbddb1175eb1fd7a21450989332024b812d39c4c2.exepowershell.exeschtasks.exeschtasks.exeoutlooks.exepowershell.exedescription ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language powershell.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 01de053d9560d419f0b6c35dbddb1175eb1fd7a21450989332024b812d39c4c2.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language powershell.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language schtasks.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language outlooks.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language schtasks.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 01de053d9560d419f0b6c35dbddb1175eb1fd7a21450989332024b812d39c4c2.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language powershell.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language schtasks.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language schtasks.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language outlooks.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language powershell.exe -
Scheduled Task/Job: Scheduled Task 1 TTPs 4 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
Processes:
schtasks.exeschtasks.exeschtasks.exeschtasks.exepid Process 4868 schtasks.exe 3768 schtasks.exe 2348 schtasks.exe 4588 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 8 IoCs
Processes:
powershell.exepowershell.exepowershell.exepowershell.exepid Process 4236 powershell.exe 3864 powershell.exe 3864 powershell.exe 4236 powershell.exe 5056 powershell.exe 60 powershell.exe 60 powershell.exe 5056 powershell.exe -
Suspicious use of AdjustPrivilegeToken 6 IoCs
Processes:
powershell.exepowershell.exe01de053d9560d419f0b6c35dbddb1175eb1fd7a21450989332024b812d39c4c2.exepowershell.exepowershell.exeoutlooks.exedescription pid Process Token: SeDebugPrivilege 4236 powershell.exe Token: SeDebugPrivilege 3864 powershell.exe Token: SeDebugPrivilege 2428 01de053d9560d419f0b6c35dbddb1175eb1fd7a21450989332024b812d39c4c2.exe Token: SeDebugPrivilege 5056 powershell.exe Token: SeDebugPrivilege 60 powershell.exe Token: SeDebugPrivilege 900 outlooks.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
outlooks.exepid Process 900 outlooks.exe -
Suspicious use of WriteProcessMemory 43 IoCs
Processes:
01de053d9560d419f0b6c35dbddb1175eb1fd7a21450989332024b812d39c4c2.exe01de053d9560d419f0b6c35dbddb1175eb1fd7a21450989332024b812d39c4c2.exeoutlooks.exeoutlooks.exedescription pid Process procid_target PID 3144 wrote to memory of 4236 3144 01de053d9560d419f0b6c35dbddb1175eb1fd7a21450989332024b812d39c4c2.exe 97 PID 3144 wrote to memory of 4236 3144 01de053d9560d419f0b6c35dbddb1175eb1fd7a21450989332024b812d39c4c2.exe 97 PID 3144 wrote to memory of 4236 3144 01de053d9560d419f0b6c35dbddb1175eb1fd7a21450989332024b812d39c4c2.exe 97 PID 3144 wrote to memory of 3864 3144 01de053d9560d419f0b6c35dbddb1175eb1fd7a21450989332024b812d39c4c2.exe 99 PID 3144 wrote to memory of 3864 3144 01de053d9560d419f0b6c35dbddb1175eb1fd7a21450989332024b812d39c4c2.exe 99 PID 3144 wrote to memory of 3864 3144 01de053d9560d419f0b6c35dbddb1175eb1fd7a21450989332024b812d39c4c2.exe 99 PID 3144 wrote to memory of 4868 3144 01de053d9560d419f0b6c35dbddb1175eb1fd7a21450989332024b812d39c4c2.exe 101 PID 3144 wrote to memory of 4868 3144 01de053d9560d419f0b6c35dbddb1175eb1fd7a21450989332024b812d39c4c2.exe 101 PID 3144 wrote to memory of 4868 3144 01de053d9560d419f0b6c35dbddb1175eb1fd7a21450989332024b812d39c4c2.exe 101 PID 3144 wrote to memory of 2428 3144 01de053d9560d419f0b6c35dbddb1175eb1fd7a21450989332024b812d39c4c2.exe 103 PID 3144 wrote to memory of 2428 3144 01de053d9560d419f0b6c35dbddb1175eb1fd7a21450989332024b812d39c4c2.exe 103 PID 3144 wrote to memory of 2428 3144 01de053d9560d419f0b6c35dbddb1175eb1fd7a21450989332024b812d39c4c2.exe 103 PID 3144 wrote to memory of 2428 3144 01de053d9560d419f0b6c35dbddb1175eb1fd7a21450989332024b812d39c4c2.exe 103 PID 3144 wrote to memory of 2428 3144 01de053d9560d419f0b6c35dbddb1175eb1fd7a21450989332024b812d39c4c2.exe 103 PID 3144 wrote to memory of 2428 3144 01de053d9560d419f0b6c35dbddb1175eb1fd7a21450989332024b812d39c4c2.exe 103 PID 3144 wrote to memory of 2428 3144 01de053d9560d419f0b6c35dbddb1175eb1fd7a21450989332024b812d39c4c2.exe 103 PID 3144 wrote to memory of 2428 3144 01de053d9560d419f0b6c35dbddb1175eb1fd7a21450989332024b812d39c4c2.exe 103 PID 2428 wrote to memory of 3768 2428 01de053d9560d419f0b6c35dbddb1175eb1fd7a21450989332024b812d39c4c2.exe 104 PID 2428 wrote to memory of 3768 2428 01de053d9560d419f0b6c35dbddb1175eb1fd7a21450989332024b812d39c4c2.exe 104 PID 2428 wrote to memory of 3768 2428 01de053d9560d419f0b6c35dbddb1175eb1fd7a21450989332024b812d39c4c2.exe 104 PID 2428 wrote to memory of 1120 2428 01de053d9560d419f0b6c35dbddb1175eb1fd7a21450989332024b812d39c4c2.exe 106 PID 2428 wrote to memory of 1120 2428 01de053d9560d419f0b6c35dbddb1175eb1fd7a21450989332024b812d39c4c2.exe 106 PID 2428 wrote to memory of 1120 2428 01de053d9560d419f0b6c35dbddb1175eb1fd7a21450989332024b812d39c4c2.exe 106 PID 1120 wrote to memory of 5056 1120 outlooks.exe 110 PID 1120 wrote to memory of 5056 1120 outlooks.exe 110 PID 1120 wrote to memory of 5056 1120 outlooks.exe 110 PID 1120 wrote to memory of 60 1120 outlooks.exe 112 PID 1120 wrote to memory of 60 1120 outlooks.exe 112 PID 1120 wrote to memory of 60 1120 outlooks.exe 112 PID 1120 wrote to memory of 2348 1120 outlooks.exe 114 PID 1120 wrote to memory of 2348 1120 outlooks.exe 114 PID 1120 wrote to memory of 2348 1120 outlooks.exe 114 PID 1120 wrote to memory of 900 1120 outlooks.exe 116 PID 1120 wrote to memory of 900 1120 outlooks.exe 116 PID 1120 wrote to memory of 900 1120 outlooks.exe 116 PID 1120 wrote to memory of 900 1120 outlooks.exe 116 PID 1120 wrote to memory of 900 1120 outlooks.exe 116 PID 1120 wrote to memory of 900 1120 outlooks.exe 116 PID 1120 wrote to memory of 900 1120 outlooks.exe 116 PID 1120 wrote to memory of 900 1120 outlooks.exe 116 PID 900 wrote to memory of 4588 900 outlooks.exe 117 PID 900 wrote to memory of 4588 900 outlooks.exe 117 PID 900 wrote to memory of 4588 900 outlooks.exe 117
Processes
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C:\Users\Admin\AppData\Local\Temp\01de053d9560d419f0b6c35dbddb1175eb1fd7a21450989332024b812d39c4c2.exe"C:\Users\Admin\AppData\Local\Temp\01de053d9560d419f0b6c35dbddb1175eb1fd7a21450989332024b812d39c4c2.exe"1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3144 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\01de053d9560d419f0b6c35dbddb1175eb1fd7a21450989332024b812d39c4c2.exe"2⤵
- Command and Scripting Interpreter: PowerShell
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4236
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\eNuXmIwkixzW.exe"2⤵
- Command and Scripting Interpreter: PowerShell
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3864
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\eNuXmIwkixzW" /XML "C:\Users\Admin\AppData\Local\Temp\tmp388F.tmp"2⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
PID:4868
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C:\Users\Admin\AppData\Local\Temp\01de053d9560d419f0b6c35dbddb1175eb1fd7a21450989332024b812d39c4c2.exe"C:\Users\Admin\AppData\Local\Temp\01de053d9560d419f0b6c35dbddb1175eb1fd7a21450989332024b812d39c4c2.exe"2⤵
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2428 -
C:\Windows\SysWOW64\schtasks.exe"schtasks" /create /tn "Outlooks" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\WindowsUpdates\outlooks.exe" /rl HIGHEST /f3⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
PID:3768
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C:\Users\Admin\AppData\Roaming\WindowsUpdates\outlooks.exe"C:\Users\Admin\AppData\Roaming\WindowsUpdates\outlooks.exe"3⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1120 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\WindowsUpdates\outlooks.exe"4⤵
- Command and Scripting Interpreter: PowerShell
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:5056
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\eNuXmIwkixzW.exe"4⤵
- Command and Scripting Interpreter: PowerShell
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:60
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\eNuXmIwkixzW" /XML "C:\Users\Admin\AppData\Local\Temp\tmp8E12.tmp"4⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
PID:2348
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C:\Users\Admin\AppData\Roaming\WindowsUpdates\outlooks.exe"C:\Users\Admin\AppData\Roaming\WindowsUpdates\outlooks.exe"4⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:900 -
C:\Windows\SysWOW64\schtasks.exe"schtasks" /create /tn "Outlooks" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\WindowsUpdates\outlooks.exe" /rl HIGHEST /f5⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
PID:4588
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\01de053d9560d419f0b6c35dbddb1175eb1fd7a21450989332024b812d39c4c2.exe.log
Filesize1KB
MD58ec831f3e3a3f77e4a7b9cd32b48384c
SHA1d83f09fd87c5bd86e045873c231c14836e76a05c
SHA2567667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982
SHA51226bffa2406b66368bd412bf25869a792631455645992cdcade2dbc13a2e56fb546414a6a9223b94c96c38d89187add6678d4779a88b38b0c9e36be8527b213c3
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Filesize
2KB
MD5968cb9309758126772781b83adb8a28f
SHA18da30e71accf186b2ba11da1797cf67f8f78b47c
SHA25692099c10776bb7e3f2a8d1b82d4d40d0c4627e4f1bf754a6e58dfd2c2e97042a
SHA5124bd50732f8af4d688d95999bddfd296115d7033ddc38f86c9fb1f47fde202bffa27e9088bebcaa3064ca946af2f5c1ca6cbde49d0907f0005c7ab42874515dd3
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Filesize
18KB
MD55c18a499b551f28025a154ac4113d0a5
SHA13cbace79a4093f58bfe50240be814dda2da2dbac
SHA256371168a52ec7839ae89bec50e6b0da6966a7d291471319dacca0fefb0a1f320a
SHA512630b083f75c3365722067704c2b01bdd50e28d6e8870636f892935fc7954062fef52559732673f98b0b96d918768428ab4ff9f00f276f8281eacd9d7bf78bdbc
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Filesize
18KB
MD567f73504632195050fa20981dbefd817
SHA11d28195d52c3744f58cdff3dd6372af80f64727f
SHA256db2fc624d45c833e3a0239446370f6ae5410201335e95abd368bc2caabdcc03e
SHA5128f5623245470162a6a8720d1d58eb7fe9ea060944a5274fbf535e67b7281b7a9c85b5906c0c19a70571f336b17eea44964a9732998e98deab1ba48e7555fabca
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
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Filesize
1KB
MD5ae3c8d11a351dbd0c687cbf0ffd33a99
SHA1355275479a26b281211f1a1ca372059d3720cea8
SHA2561c359ff00bc2f2491746d35ecc273b1ae9f18d73d76f5cf624240dcda59c9979
SHA512d6a3af03de6534b8ebbf7f48e1da646ec01c7bf4a20c98bc89f883c3a91cfcbfee986153f18dbcd9f3055ebf7cb03a71bbe0c7f52ff133e43d0d9666ce39c5a7
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Filesize
3.7MB
MD515f259b30ec72a5217144834f7f5b564
SHA1baed3fe7d059a497f856e263431ccd3872ef1ea1
SHA25601de053d9560d419f0b6c35dbddb1175eb1fd7a21450989332024b812d39c4c2
SHA5125e1148a9cf8008b7c38d067ec34e5c3bc7255341d114476532f8111ea2c3e654eb70b0a439aaaea22543576f09b9cec269f9b3414a6a24fc54b89c7c677c5f47