Analysis
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max time kernel
145s -
max time network
149s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
15-01-2025 02:21
Static task
static1
Behavioral task
behavioral1
Sample
1528a6080656c5a8cf440d976047d7fa31e93e483c10142f416108f211145ff0.exe
Resource
win7-20240903-en
General
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Target
1528a6080656c5a8cf440d976047d7fa31e93e483c10142f416108f211145ff0.exe
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Size
3.8MB
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MD5
df29ee043d88f265cd76747f62ab3ea7
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SHA1
0594a814e05c80618a72a865fa53d24fd351db5b
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SHA256
1528a6080656c5a8cf440d976047d7fa31e93e483c10142f416108f211145ff0
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SHA512
7826bc0582819fb165b25c21fd5a9385b47332201a464b8ae4a035d65f0b3c7ece75507ba0acfa92a6e8b55f2a18ba83344dbf3db264be7d43d3beb5796384a1
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SSDEEP
98304:WhZ14lAzlFFzMsYLtZvQ1pVjLvAMQkWS27MtXE:WhZ1AAvFzMBNQTBIMQkXtX
Malware Config
Extracted
quasar
1.4.1
gasplant
toolsbox.ydns.eu:20901
33714128-68e4-4509-bd32-b7e414783d3eDtWike
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encryption_key
43CBFE44C367A91A79A79C9E1778A82D0B498870
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install_name
Client.exe
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log_directory
Logs
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reconnect_delay
3000
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startup_key
Quasar Client Startup
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subdirectory
SubDir
Signatures
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Quasar family
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Quasar payload 1 IoCs
resource yara_rule behavioral2/memory/816-46-0x0000000000400000-0x0000000000724000-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.
pid Process 4356 powershell.exe 5068 powershell.exe 1948 powershell.exe 3484 powershell.exe -
Checks computer location settings 2 TTPs 2 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation 1528a6080656c5a8cf440d976047d7fa31e93e483c10142f416108f211145ff0.exe Key value queried \REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation Client.exe -
Executes dropped EXE 3 IoCs
pid Process 2964 Client.exe 1616 Client.exe 3124 Client.exe -
Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 3596 set thread context of 816 3596 1528a6080656c5a8cf440d976047d7fa31e93e483c10142f416108f211145ff0.exe 96 PID 2964 set thread context of 3124 2964 Client.exe 109 -
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.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language powershell.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 1528a6080656c5a8cf440d976047d7fa31e93e483c10142f416108f211145ff0.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language schtasks.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 Client.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 Client.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 1528a6080656c5a8cf440d976047d7fa31e93e483c10142f416108f211145ff0.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language powershell.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language schtasks.exe -
Scheduled Task/Job: Scheduled Task 1 TTPs 4 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 2032 schtasks.exe 876 schtasks.exe 3128 schtasks.exe 844 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 12 IoCs
pid Process 1948 powershell.exe 3484 powershell.exe 3596 1528a6080656c5a8cf440d976047d7fa31e93e483c10142f416108f211145ff0.exe 3596 1528a6080656c5a8cf440d976047d7fa31e93e483c10142f416108f211145ff0.exe 3484 powershell.exe 1948 powershell.exe 4356 powershell.exe 5068 powershell.exe 2964 Client.exe 2964 Client.exe 5068 powershell.exe 4356 powershell.exe -
Suspicious use of AdjustPrivilegeToken 8 IoCs
description pid Process Token: SeDebugPrivilege 1948 powershell.exe Token: SeDebugPrivilege 3484 powershell.exe Token: SeDebugPrivilege 3596 1528a6080656c5a8cf440d976047d7fa31e93e483c10142f416108f211145ff0.exe Token: SeDebugPrivilege 816 1528a6080656c5a8cf440d976047d7fa31e93e483c10142f416108f211145ff0.exe Token: SeDebugPrivilege 4356 powershell.exe Token: SeDebugPrivilege 5068 powershell.exe Token: SeDebugPrivilege 2964 Client.exe Token: SeDebugPrivilege 3124 Client.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 3124 Client.exe -
Suspicious use of WriteProcessMemory 49 IoCs
description pid Process procid_target PID 3596 wrote to memory of 1948 3596 1528a6080656c5a8cf440d976047d7fa31e93e483c10142f416108f211145ff0.exe 89 PID 3596 wrote to memory of 1948 3596 1528a6080656c5a8cf440d976047d7fa31e93e483c10142f416108f211145ff0.exe 89 PID 3596 wrote to memory of 1948 3596 1528a6080656c5a8cf440d976047d7fa31e93e483c10142f416108f211145ff0.exe 89 PID 3596 wrote to memory of 3484 3596 1528a6080656c5a8cf440d976047d7fa31e93e483c10142f416108f211145ff0.exe 91 PID 3596 wrote to memory of 3484 3596 1528a6080656c5a8cf440d976047d7fa31e93e483c10142f416108f211145ff0.exe 91 PID 3596 wrote to memory of 3484 3596 1528a6080656c5a8cf440d976047d7fa31e93e483c10142f416108f211145ff0.exe 91 PID 3596 wrote to memory of 2032 3596 1528a6080656c5a8cf440d976047d7fa31e93e483c10142f416108f211145ff0.exe 93 PID 3596 wrote to memory of 2032 3596 1528a6080656c5a8cf440d976047d7fa31e93e483c10142f416108f211145ff0.exe 93 PID 3596 wrote to memory of 2032 3596 1528a6080656c5a8cf440d976047d7fa31e93e483c10142f416108f211145ff0.exe 93 PID 3596 wrote to memory of 2440 3596 1528a6080656c5a8cf440d976047d7fa31e93e483c10142f416108f211145ff0.exe 95 PID 3596 wrote to memory of 2440 3596 1528a6080656c5a8cf440d976047d7fa31e93e483c10142f416108f211145ff0.exe 95 PID 3596 wrote to memory of 2440 3596 1528a6080656c5a8cf440d976047d7fa31e93e483c10142f416108f211145ff0.exe 95 PID 3596 wrote to memory of 816 3596 1528a6080656c5a8cf440d976047d7fa31e93e483c10142f416108f211145ff0.exe 96 PID 3596 wrote to memory of 816 3596 1528a6080656c5a8cf440d976047d7fa31e93e483c10142f416108f211145ff0.exe 96 PID 3596 wrote to memory of 816 3596 1528a6080656c5a8cf440d976047d7fa31e93e483c10142f416108f211145ff0.exe 96 PID 3596 wrote to memory of 816 3596 1528a6080656c5a8cf440d976047d7fa31e93e483c10142f416108f211145ff0.exe 96 PID 3596 wrote to memory of 816 3596 1528a6080656c5a8cf440d976047d7fa31e93e483c10142f416108f211145ff0.exe 96 PID 3596 wrote to memory of 816 3596 1528a6080656c5a8cf440d976047d7fa31e93e483c10142f416108f211145ff0.exe 96 PID 3596 wrote to memory of 816 3596 1528a6080656c5a8cf440d976047d7fa31e93e483c10142f416108f211145ff0.exe 96 PID 3596 wrote to memory of 816 3596 1528a6080656c5a8cf440d976047d7fa31e93e483c10142f416108f211145ff0.exe 96 PID 816 wrote to memory of 876 816 1528a6080656c5a8cf440d976047d7fa31e93e483c10142f416108f211145ff0.exe 97 PID 816 wrote to memory of 876 816 1528a6080656c5a8cf440d976047d7fa31e93e483c10142f416108f211145ff0.exe 97 PID 816 wrote to memory of 876 816 1528a6080656c5a8cf440d976047d7fa31e93e483c10142f416108f211145ff0.exe 97 PID 816 wrote to memory of 2964 816 1528a6080656c5a8cf440d976047d7fa31e93e483c10142f416108f211145ff0.exe 99 PID 816 wrote to memory of 2964 816 1528a6080656c5a8cf440d976047d7fa31e93e483c10142f416108f211145ff0.exe 99 PID 816 wrote to memory of 2964 816 1528a6080656c5a8cf440d976047d7fa31e93e483c10142f416108f211145ff0.exe 99 PID 2964 wrote to memory of 4356 2964 Client.exe 102 PID 2964 wrote to memory of 4356 2964 Client.exe 102 PID 2964 wrote to memory of 4356 2964 Client.exe 102 PID 2964 wrote to memory of 5068 2964 Client.exe 104 PID 2964 wrote to memory of 5068 2964 Client.exe 104 PID 2964 wrote to memory of 5068 2964 Client.exe 104 PID 2964 wrote to memory of 3128 2964 Client.exe 106 PID 2964 wrote to memory of 3128 2964 Client.exe 106 PID 2964 wrote to memory of 3128 2964 Client.exe 106 PID 2964 wrote to memory of 1616 2964 Client.exe 108 PID 2964 wrote to memory of 1616 2964 Client.exe 108 PID 2964 wrote to memory of 1616 2964 Client.exe 108 PID 2964 wrote to memory of 3124 2964 Client.exe 109 PID 2964 wrote to memory of 3124 2964 Client.exe 109 PID 2964 wrote to memory of 3124 2964 Client.exe 109 PID 2964 wrote to memory of 3124 2964 Client.exe 109 PID 2964 wrote to memory of 3124 2964 Client.exe 109 PID 2964 wrote to memory of 3124 2964 Client.exe 109 PID 2964 wrote to memory of 3124 2964 Client.exe 109 PID 2964 wrote to memory of 3124 2964 Client.exe 109 PID 3124 wrote to memory of 844 3124 Client.exe 110 PID 3124 wrote to memory of 844 3124 Client.exe 110 PID 3124 wrote to memory of 844 3124 Client.exe 110
Processes
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C:\Users\Admin\AppData\Local\Temp\1528a6080656c5a8cf440d976047d7fa31e93e483c10142f416108f211145ff0.exe"C:\Users\Admin\AppData\Local\Temp\1528a6080656c5a8cf440d976047d7fa31e93e483c10142f416108f211145ff0.exe"1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3596 -
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\1528a6080656c5a8cf440d976047d7fa31e93e483c10142f416108f211145ff0.exe"2⤵
- Command and Scripting Interpreter: PowerShell
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1948
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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\OLHTuSLw.exe"2⤵
- Command and Scripting Interpreter: PowerShell
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3484
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\OLHTuSLw" /XML "C:\Users\Admin\AppData\Local\Temp\tmpF8D7.tmp"2⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
PID:2032
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C:\Users\Admin\AppData\Local\Temp\1528a6080656c5a8cf440d976047d7fa31e93e483c10142f416108f211145ff0.exe"C:\Users\Admin\AppData\Local\Temp\1528a6080656c5a8cf440d976047d7fa31e93e483c10142f416108f211145ff0.exe"2⤵PID:2440
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C:\Users\Admin\AppData\Local\Temp\1528a6080656c5a8cf440d976047d7fa31e93e483c10142f416108f211145ff0.exe"C:\Users\Admin\AppData\Local\Temp\1528a6080656c5a8cf440d976047d7fa31e93e483c10142f416108f211145ff0.exe"2⤵
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:816 -
C:\Windows\SysWOW64\schtasks.exe"schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f3⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
PID:876
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C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"3⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2964 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"4⤵
- Command and Scripting Interpreter: PowerShell
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4356
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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\OLHTuSLw.exe"4⤵
- Command and Scripting Interpreter: PowerShell
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:5068
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\OLHTuSLw" /XML "C:\Users\Admin\AppData\Local\Temp\tmp4745.tmp"4⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
PID:3128
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C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"4⤵
- Executes dropped EXE
PID:1616
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C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"4⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3124 -
C:\Windows\SysWOW64\schtasks.exe"schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f5⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
PID:844
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\1528a6080656c5a8cf440d976047d7fa31e93e483c10142f416108f211145ff0.exe.log
Filesize1KB
MD58ec831f3e3a3f77e4a7b9cd32b48384c
SHA1d83f09fd87c5bd86e045873c231c14836e76a05c
SHA2567667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982
SHA51226bffa2406b66368bd412bf25869a792631455645992cdcade2dbc13a2e56fb546414a6a9223b94c96c38d89187add6678d4779a88b38b0c9e36be8527b213c3
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Filesize
2KB
MD5968cb9309758126772781b83adb8a28f
SHA18da30e71accf186b2ba11da1797cf67f8f78b47c
SHA25692099c10776bb7e3f2a8d1b82d4d40d0c4627e4f1bf754a6e58dfd2c2e97042a
SHA5124bd50732f8af4d688d95999bddfd296115d7033ddc38f86c9fb1f47fde202bffa27e9088bebcaa3064ca946af2f5c1ca6cbde49d0907f0005c7ab42874515dd3
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Filesize
18KB
MD5be0f13baf0dfa7f34afb53a627895891
SHA16e2c127c3e2766cec6389498d253e852520cecfe
SHA256315e986c1423abdc34289bc8717f9a0d6a9a07baf0d5d1979b638a332da4058c
SHA5121229f931d46f1835ccc7d14d8e85385d987be6832e71d0964f8da2ca5413d4caabf1cdbaae0f3664bd23d16bdfa9b801bd09db580df21c01016242cb3b9ec616
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Filesize
104B
MD5b6207ee50747185b4de5d8ef953633a0
SHA1e978a1e213531b8feb3526481e664c2cb795dd5f
SHA25657471413476ae03869c5e7a34c33f2113fafb1514f32e6ac4f6242607423ca63
SHA51224997806bb4eed108d7a72345d429707973f34abc94042305d9a7ef51b9371b369756a1a7b2e9b578b6c6e46932ae5c8f6d558c49c76481800f8e37f54569814
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
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Filesize
1KB
MD5ebd2d620540842c346c8e52cad6590d0
SHA134b736dcee1cb12abee9f6bdd1e4a7d016ca836c
SHA2569d0de3dd66aebf64c0d2f8005df290f864a249960d27db35f52893473bcf4e68
SHA51257368d19eeb42bb6222b1407d92b08178fc407a8cdab541334ce372fcb11971dfc0fd5e1dc36d166bfd5df8abd6946efb6e4e216e3c1f336432fa17232c32b94
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Filesize
3.8MB
MD5df29ee043d88f265cd76747f62ab3ea7
SHA10594a814e05c80618a72a865fa53d24fd351db5b
SHA2561528a6080656c5a8cf440d976047d7fa31e93e483c10142f416108f211145ff0
SHA5127826bc0582819fb165b25c21fd5a9385b47332201a464b8ae4a035d65f0b3c7ece75507ba0acfa92a6e8b55f2a18ba83344dbf3db264be7d43d3beb5796384a1