Analysis
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max time kernel
62s -
max time network
63s -
platform
windows11-21h2_x64 -
resource
win11-20241007-en -
resource tags
arch:x64arch:x86image:win11-20241007-enlocale:en-usos:windows11-21h2-x64system -
submitted
21-01-2025 15:41
Static task
static1
General
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Target
emmasBackdoor.exe
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Size
2.9MB
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MD5
0266f80fe6efd3e3e4bd0363d17bcbde
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SHA1
b144914eb53d2e35e410be64d2db052d06d680df
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SHA256
6cffbcd23aeb7ea8c813cda4dad413b9c24d983c0fa6da03931b690b04502411
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SHA512
21174624b988b26d16ba96c57b65a0dd0c0fa02d5396ca29c5cc11851f7546a528e1343f3216b224f3deebb1e749ac1dfd02fc5485bf4a0dd5b6d0983c496ac8
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SSDEEP
49152:EwREDDMVBq77B4L8lXQn/zJNGJ7YTpZIn+lD2GgWinoaDFO/82:EwRE8q77B44+zJNN1aHNo2O/82
Malware Config
Extracted
quasar
1.4.1
EmmasSub
rath3r.xyz:4782
7126373e-e872-4f94-bbbb-42e88d57137b
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encryption_key
4DC093FC202D016F95DCEE92AAF2874F56ACC3F2
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install_name
Windows.WARP.JITService.exe
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log_directory
Logs
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reconnect_delay
3000
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startup_key
MicrosoftUpdateTaskMachineCore
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subdirectory
ice
Signatures
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description ioc Process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\DisableAntiSpyware = "1" powershell.exe -
Quasar family
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Quasar payload 2 IoCs
resource yara_rule behavioral1/files/0x001900000002aba5-71.dat family_quasar behavioral1/memory/536-73-0x0000000000B60000-0x0000000000E84000-memory.dmp family_quasar -
Executes dropped EXE 4 IoCs
pid Process 3928 emmasBackdoor.tmp 536 Client.exe 572 Windows.WARP.JITService.exe 3536 Client.exe -
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
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Drops file in System32 directory 5 IoCs
description ioc Process File created C:\Windows\system32\ice\Windows.WARP.JITService.exe Client.exe File opened for modification C:\Windows\system32\ice\Windows.WARP.JITService.exe Client.exe File opened for modification C:\Windows\system32\ice Client.exe File opened for modification C:\Windows\system32\ice\Windows.WARP.JITService.exe Windows.WARP.JITService.exe File opened for modification C:\Windows\system32\ice Windows.WARP.JITService.exe -
Drops file in Program Files directory 5 IoCs
description ioc Process File created C:\Program Files (x86)\EmmasBackdoor\is-AMTN8.tmp emmasBackdoor.tmp File created C:\Program Files (x86)\EmmasBackdoor\is-H7KOU.tmp emmasBackdoor.tmp File opened for modification C:\Program Files (x86)\EmmasBackdoor\unins000.dat emmasBackdoor.tmp File opened for modification C:\Program Files (x86)\EmmasBackdoor\Client.exe emmasBackdoor.tmp File created C:\Program Files (x86)\EmmasBackdoor\unins000.dat emmasBackdoor.tmp -
pid Process 1324 powershell.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 3 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 emmasBackdoor.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language emmasBackdoor.tmp Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language powershell.exe -
Checks SCSI registry key(s) 3 TTPs 3 IoCs
SCSI information is often read in order to detect sandboxing environments.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000 taskmgr.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\Properties\{b725f130-47ef-101a-a5f1-02608c9eebac}\000A taskmgr.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\FriendlyName taskmgr.exe -
Modifies registry class 19 IoCs
description ioc Process Key created \REGISTRY\MACHINE\Software\Classes\EmmasBackdoorFile.myp\shell\open\command emmasBackdoor.tmp Key created \REGISTRY\MACHINE\SOFTWARE\Classes\EmmasBackdoorFile.myp\shell emmasBackdoor.tmp Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Applications emmasBackdoor.tmp Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Applications\Client.exe emmasBackdoor.tmp Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Applications\Client.exe\SupportedTypes emmasBackdoor.tmp Key created \REGISTRY\MACHINE\Software\Classes\.myp\OpenWithProgids emmasBackdoor.tmp Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.myp\OpenWithProgids emmasBackdoor.tmp Key created \REGISTRY\MACHINE\Software\Classes\EmmasBackdoorFile.myp emmasBackdoor.tmp Key created \REGISTRY\MACHINE\SOFTWARE\Classes\EmmasBackdoorFile.myp\shell\open\command emmasBackdoor.tmp Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\EmmasBackdoorFile.myp\shell\open\command\ = "\"C:\\Program Files (x86)\\EmmasBackdoor\\Client.exe\" \"%1\"" emmasBackdoor.tmp Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Applications\Client.exe\SupportedTypes\.myp emmasBackdoor.tmp Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.myp emmasBackdoor.tmp Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\EmmasBackdoorFile.myp\ = "EmmasBackdoor File" emmasBackdoor.tmp Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\EmmasBackdoorFile.myp\DefaultIcon\ = "C:\\Program Files (x86)\\EmmasBackdoor\\Client.exe,0" emmasBackdoor.tmp Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.myp\OpenWithProgids\EmmasBackdoorFile.myp emmasBackdoor.tmp Key created \REGISTRY\MACHINE\Software\Classes\Applications\Client.exe\SupportedTypes emmasBackdoor.tmp Key created \REGISTRY\MACHINE\Software\Classes\EmmasBackdoorFile.myp\DefaultIcon emmasBackdoor.tmp Key created \REGISTRY\MACHINE\SOFTWARE\Classes\EmmasBackdoorFile.myp emmasBackdoor.tmp Key created \REGISTRY\MACHINE\SOFTWARE\Classes\EmmasBackdoorFile.myp\shell\open emmasBackdoor.tmp -
Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 2380 schtasks.exe 3220 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 1324 powershell.exe 1324 powershell.exe 3928 emmasBackdoor.tmp 3928 emmasBackdoor.tmp 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 3696 taskmgr.exe -
Suspicious use of AdjustPrivilegeToken 7 IoCs
description pid Process Token: SeDebugPrivilege 1324 powershell.exe Token: SeDebugPrivilege 536 Client.exe Token: SeDebugPrivilege 572 Windows.WARP.JITService.exe Token: SeDebugPrivilege 3696 taskmgr.exe Token: SeSystemProfilePrivilege 3696 taskmgr.exe Token: SeCreateGlobalPrivilege 3696 taskmgr.exe Token: SeDebugPrivilege 3536 Client.exe -
Suspicious use of FindShellTrayWindow 50 IoCs
pid Process 3928 emmasBackdoor.tmp 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe -
Suspicious use of SendNotifyMessage 49 IoCs
pid Process 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe 3696 taskmgr.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 572 Windows.WARP.JITService.exe -
Suspicious use of WriteProcessMemory 14 IoCs
description pid Process procid_target PID 1956 wrote to memory of 3928 1956 emmasBackdoor.exe 78 PID 1956 wrote to memory of 3928 1956 emmasBackdoor.exe 78 PID 1956 wrote to memory of 3928 1956 emmasBackdoor.exe 78 PID 3928 wrote to memory of 1324 3928 emmasBackdoor.tmp 79 PID 3928 wrote to memory of 1324 3928 emmasBackdoor.tmp 79 PID 3928 wrote to memory of 1324 3928 emmasBackdoor.tmp 79 PID 3928 wrote to memory of 536 3928 emmasBackdoor.tmp 82 PID 3928 wrote to memory of 536 3928 emmasBackdoor.tmp 82 PID 536 wrote to memory of 2380 536 Client.exe 83 PID 536 wrote to memory of 2380 536 Client.exe 83 PID 536 wrote to memory of 572 536 Client.exe 85 PID 536 wrote to memory of 572 536 Client.exe 85 PID 572 wrote to memory of 3220 572 Windows.WARP.JITService.exe 86 PID 572 wrote to memory of 3220 572 Windows.WARP.JITService.exe 86 -
Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
Processes
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C:\Users\Admin\AppData\Local\Temp\emmasBackdoor.exe"C:\Users\Admin\AppData\Local\Temp\emmasBackdoor.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1956 -
C:\Users\Admin\AppData\Local\Temp\is-2MGJ8.tmp\emmasBackdoor.tmp"C:\Users\Admin\AppData\Local\Temp\is-2MGJ8.tmp\emmasBackdoor.tmp" /SL5="$50102,1909968,965632,C:\Users\Admin\AppData\Local\Temp\emmasBackdoor.exe"2⤵
- Executes dropped EXE
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:3928 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"powershell.exe" -ExecutionPolicy Bypass -File "C:\Users\Admin\AppData\Local\Temp\is-83R7C.tmp\disable_defender.ps1"3⤵
- Modifies Windows Defender DisableAntiSpyware settings
- Command and Scripting Interpreter: PowerShell
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1324
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C:\Program Files (x86)\EmmasBackdoor\Client.exe"C:\Program Files (x86)\EmmasBackdoor\Client.exe"3⤵
- Executes dropped EXE
- Drops file in System32 directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:536 -
C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "MicrosoftUpdateTaskMachineCore" /sc ONLOGON /tr "C:\Windows\system32\ice\Windows.WARP.JITService.exe" /rl HIGHEST /f4⤵
- Scheduled Task/Job: Scheduled Task
PID:2380
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C:\Windows\system32\ice\Windows.WARP.JITService.exe"C:\Windows\system32\ice\Windows.WARP.JITService.exe"4⤵
- Executes dropped EXE
- Drops file in System32 directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:572 -
C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "MicrosoftUpdateTaskMachineCore" /sc ONLOGON /tr "C:\Windows\system32\ice\Windows.WARP.JITService.exe" /rl HIGHEST /f5⤵
- Scheduled Task/Job: Scheduled Task
PID:3220
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k LocalService -p -s NPSMSvc1⤵PID:3644
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C:\Windows\system32\taskmgr.exe"C:\Windows\system32\taskmgr.exe" /01⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:3696
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C:\Windows\System32\rundll32.exeC:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding1⤵PID:3372
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C:\Program Files (x86)\EmmasBackdoor\Client.exe"C:\Program Files (x86)\EmmasBackdoor\Client.exe"1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3536
Network
MITRE ATT&CK Enterprise v15
Execution
Command and Scripting Interpreter
1PowerShell
1Scheduled Task/Job
1Scheduled Task
1Persistence
Create or Modify System Process
1Windows Service
1Scheduled Task/Job
1Scheduled Task
1Privilege Escalation
Create or Modify System Process
1Windows Service
1Scheduled Task/Job
1Scheduled Task
1Replay Monitor
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Downloads
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Filesize
3.1MB
MD566ebe604ddf4d6ab60a183f515536528
SHA1278782873ae0a5cac94add051edfc12e223be55c
SHA25637e733731381c02941e4a8da30350cf968532d08012b6bb91e525241e8ee2c86
SHA512756de51b5f6116640736f7dd37faf6172db79c8eaf8da17ba1e3d788d5c0179a01746f7d30044ca5c535c1b3d938bfde3e5d810b7fe50815030be8a5288c2bf9
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Filesize
1KB
MD53188d6b66851379af27201e187e55ca4
SHA1f06e592dd26b71818fd3410f086acc0b5c748729
SHA25609da50da70ac60e012eb4db1ee578f49e3e9412307c302ec6fb762eeed388725
SHA512138ca9c1e10fb9fbb8521013975f3bc2e86ce1a3d882c9f5aa30660a3f4ceaef96a4657257b9e56279f3a358126a6eea3fa831d9f84548ebadd2cb4eb30b2a2d
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Filesize
1KB
MD5b4e91d2e5f40d5e2586a86cf3bb4df24
SHA131920b3a41aa4400d4a0230a7622848789b38672
SHA2565d8af3c7519874ed42a0d74ee559ae30d9cc6930aef213079347e2b47092c210
SHA512968751b79a98961f145de48d425ea820fd1875bae79a725adf35fc8f4706c103ee0c7babd4838166d8a0dda9fbce3728c0265a04c4b37f335ec4eaa110a2b319
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
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Filesize
3.3MB
MD595c49a50069cf27284ac7b186df5aae0
SHA14120193848e7726aac277f9ea6e4b3670342ed03
SHA2569f62b6f4c234ded050162b55a9c6de0c604578dee34462b96615e48169a485bb
SHA512f6d3fd7454943aac838cd81e17c35787747185e0736823424453ffbf375da1e921dba0a5ce88a05f7a71e2ac367d47ee8fbabbd529f48997b99f1a3afa5370cd
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Filesize
544B
MD53568227fbb730d48fa31d13e87f9a370
SHA183ac8fbb2b9c35337f372977fe3323f63060c5ff
SHA256a06e1c77a4ab2a13f90dc2f86bbb4cb662f2bd10b1f805b1b7745af4c2ad3698
SHA5122b8863dbdc4c980eac867e600ca008261d046a99bf40cfc02a350ec45a04e3a7b958b21219ad0a26b339336f779ba167aa84c45dbe4d9d9ada004c4515ba6d17