Analysis
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max time kernel
148s -
max time network
150s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
30-05-2024 01:32
Behavioral task
behavioral1
Sample
c509ea51e44a654f104ab9fb8e5d681a871159c73fcf3f666245e303387329b2.exe
Resource
win7-20240221-en
General
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Target
c509ea51e44a654f104ab9fb8e5d681a871159c73fcf3f666245e303387329b2.exe
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Size
3.1MB
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MD5
e3d628461d24faf2ad61e1305ed99542
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SHA1
aefcdd93114397de51ce8f63e9ef96b65a5b5c11
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SHA256
c509ea51e44a654f104ab9fb8e5d681a871159c73fcf3f666245e303387329b2
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SHA512
20d47ef82c1dde83325d088c69ff9ae6f968b0a19d652f5ed2f21b1531c86fbf0b49e9df0d524c1333001c7565a8a56039aa31bb82ceba63c41b989dc8fcc991
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SSDEEP
49152:xvSlL26AaNeWgPhlmVqvMQ7XSK0bLimzCCoGdITHHB72eh2NT:xvKL26AaNeWgPhlmVqkQ7XSK0bLz
Malware Config
Extracted
quasar
1.4.1
Office04
31.177.108.29:4782
553dcf2c-4c70-4c0c-935a-2e078a46f03e
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encryption_key
DAFF70D249B4EC619D5A052FDD3418E3549FF268
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install_name
KR6nDu9fLhop1bFe.exe
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log_directory
Logs
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reconnect_delay
3000
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startup_key
Defender.Process
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subdirectory
SubDir
Signatures
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Quasar payload 3 IoCs
Processes:
resource yara_rule behavioral1/memory/2864-1-0x0000000000D70000-0x0000000001094000-memory.dmp family_quasar C:\Users\Admin\AppData\Roaming\SubDir\KR6nDu9fLhop1bFe.exe family_quasar behavioral1/memory/1648-9-0x0000000000AB0000-0x0000000000DD4000-memory.dmp family_quasar -
Detects Windows executables referencing non-Windows User-Agents 3 IoCs
Processes:
resource yara_rule behavioral1/memory/2864-1-0x0000000000D70000-0x0000000001094000-memory.dmp INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA C:\Users\Admin\AppData\Roaming\SubDir\KR6nDu9fLhop1bFe.exe INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA behavioral1/memory/1648-9-0x0000000000AB0000-0x0000000000DD4000-memory.dmp INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA -
Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers. 3 IoCs
Processes:
resource yara_rule behavioral1/memory/2864-1-0x0000000000D70000-0x0000000001094000-memory.dmp INDICATOR_SUSPICIOUS_Binary_References_Browsers C:\Users\Admin\AppData\Roaming\SubDir\KR6nDu9fLhop1bFe.exe INDICATOR_SUSPICIOUS_Binary_References_Browsers behavioral1/memory/1648-9-0x0000000000AB0000-0x0000000000DD4000-memory.dmp INDICATOR_SUSPICIOUS_Binary_References_Browsers -
Detects executables containing common artifacts observed in infostealers 3 IoCs
Processes:
resource yara_rule behavioral1/memory/2864-1-0x0000000000D70000-0x0000000001094000-memory.dmp INDICATOR_SUSPICIOUS_GENInfoStealer C:\Users\Admin\AppData\Roaming\SubDir\KR6nDu9fLhop1bFe.exe INDICATOR_SUSPICIOUS_GENInfoStealer behavioral1/memory/1648-9-0x0000000000AB0000-0x0000000000DD4000-memory.dmp INDICATOR_SUSPICIOUS_GENInfoStealer -
Executes dropped EXE 1 IoCs
Processes:
KR6nDu9fLhop1bFe.exepid process 1648 KR6nDu9fLhop1bFe.exe -
Creates scheduled task(s) 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
Processes:
schtasks.exeschtasks.exepid process 1768 schtasks.exe 2596 schtasks.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
c509ea51e44a654f104ab9fb8e5d681a871159c73fcf3f666245e303387329b2.exeKR6nDu9fLhop1bFe.exedescription pid process Token: SeDebugPrivilege 2864 c509ea51e44a654f104ab9fb8e5d681a871159c73fcf3f666245e303387329b2.exe Token: SeDebugPrivilege 1648 KR6nDu9fLhop1bFe.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
KR6nDu9fLhop1bFe.exepid process 1648 KR6nDu9fLhop1bFe.exe -
Suspicious use of WriteProcessMemory 9 IoCs
Processes:
c509ea51e44a654f104ab9fb8e5d681a871159c73fcf3f666245e303387329b2.exeKR6nDu9fLhop1bFe.exedescription pid process target process PID 2864 wrote to memory of 1768 2864 c509ea51e44a654f104ab9fb8e5d681a871159c73fcf3f666245e303387329b2.exe schtasks.exe PID 2864 wrote to memory of 1768 2864 c509ea51e44a654f104ab9fb8e5d681a871159c73fcf3f666245e303387329b2.exe schtasks.exe PID 2864 wrote to memory of 1768 2864 c509ea51e44a654f104ab9fb8e5d681a871159c73fcf3f666245e303387329b2.exe schtasks.exe PID 2864 wrote to memory of 1648 2864 c509ea51e44a654f104ab9fb8e5d681a871159c73fcf3f666245e303387329b2.exe KR6nDu9fLhop1bFe.exe PID 2864 wrote to memory of 1648 2864 c509ea51e44a654f104ab9fb8e5d681a871159c73fcf3f666245e303387329b2.exe KR6nDu9fLhop1bFe.exe PID 2864 wrote to memory of 1648 2864 c509ea51e44a654f104ab9fb8e5d681a871159c73fcf3f666245e303387329b2.exe KR6nDu9fLhop1bFe.exe PID 1648 wrote to memory of 2596 1648 KR6nDu9fLhop1bFe.exe schtasks.exe PID 1648 wrote to memory of 2596 1648 KR6nDu9fLhop1bFe.exe schtasks.exe PID 1648 wrote to memory of 2596 1648 KR6nDu9fLhop1bFe.exe schtasks.exe -
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\c509ea51e44a654f104ab9fb8e5d681a871159c73fcf3f666245e303387329b2.exe"C:\Users\Admin\AppData\Local\Temp\c509ea51e44a654f104ab9fb8e5d681a871159c73fcf3f666245e303387329b2.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\schtasks.exe"schtasks" /create /tn "Defender.Process" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\KR6nDu9fLhop1bFe.exe" /rl HIGHEST /f2⤵
- Creates scheduled task(s)
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C:\Users\Admin\AppData\Roaming\SubDir\KR6nDu9fLhop1bFe.exe"C:\Users\Admin\AppData\Roaming\SubDir\KR6nDu9fLhop1bFe.exe"2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\schtasks.exe"schtasks" /create /tn "Defender.Process" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\KR6nDu9fLhop1bFe.exe" /rl HIGHEST /f3⤵
- Creates scheduled task(s)
Network
MITRE ATT&CK Matrix ATT&CK v13
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Roaming\SubDir\KR6nDu9fLhop1bFe.exeFilesize
3.1MB
MD5e3d628461d24faf2ad61e1305ed99542
SHA1aefcdd93114397de51ce8f63e9ef96b65a5b5c11
SHA256c509ea51e44a654f104ab9fb8e5d681a871159c73fcf3f666245e303387329b2
SHA51220d47ef82c1dde83325d088c69ff9ae6f968b0a19d652f5ed2f21b1531c86fbf0b49e9df0d524c1333001c7565a8a56039aa31bb82ceba63c41b989dc8fcc991
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memory/1648-8-0x000007FEF5A50000-0x000007FEF643C000-memory.dmpFilesize
9.9MB
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memory/1648-9-0x0000000000AB0000-0x0000000000DD4000-memory.dmpFilesize
3.1MB
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memory/1648-11-0x000007FEF5A50000-0x000007FEF643C000-memory.dmpFilesize
9.9MB
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memory/1648-12-0x000007FEF5A50000-0x000007FEF643C000-memory.dmpFilesize
9.9MB
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memory/2864-0-0x000007FEF5A53000-0x000007FEF5A54000-memory.dmpFilesize
4KB
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memory/2864-1-0x0000000000D70000-0x0000000001094000-memory.dmpFilesize
3.1MB
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memory/2864-2-0x000007FEF5A50000-0x000007FEF643C000-memory.dmpFilesize
9.9MB
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memory/2864-10-0x000007FEF5A50000-0x000007FEF643C000-memory.dmpFilesize
9.9MB