Analysis
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max time kernel
17s -
max time network
22s -
platform
windows10-2004_x64 -
resource
win10v2004-20240802-en -
resource tags
arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system -
submitted
02-08-2024 23:37
Behavioral task
behavioral1
Sample
solara.exe
Resource
win7-20240704-en
General
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Target
solara.exe
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Size
3.1MB
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MD5
1bdf6c7fda1c36dab1558b37aeb0d631
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SHA1
9f7dc44275ee93dd42a8bffba2fc905c5ea56c24
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SHA256
b7871caa008e2b9b56b23b6d9623064e6f773b58e5508b41001d125e29d71956
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SHA512
52ddf7ee9b33cbd0fbd0f753cabb32763f2789a42abe995420f6a5d79aa9f841bb3707d088c29c5a9908f7e5c008f69e6f1971d36b2e0baedbe7ab2ac0cce0ce
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SSDEEP
49152:evkt62XlaSFNWPjljiFa2RoUYIJCH1JjLoGdskTHHB72eh2NT:ev462XlaSFNWPjljiFXRoUYIJCX
Malware Config
Extracted
quasar
1.4.1
Office04
192.168.86.42:4782
eaedb9b3-efa3-4f4e-8bd1-e6323c15fea8
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encryption_key
F7A22B1954257A2F04BA3A86C02C0AD9DCBB6415
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install_name
NovaRecoil.exe
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log_directory
Logs
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reconnect_delay
3000
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startup_key
REC
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subdirectory
SubDir
Signatures
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Quasar payload 2 IoCs
Processes:
resource yara_rule behavioral2/memory/396-1-0x0000000000080000-0x00000000003A4000-memory.dmp family_quasar C:\Users\Admin\AppData\Roaming\SubDir\NovaRecoil.exe family_quasar -
Executes dropped EXE 1 IoCs
Processes:
NovaRecoil.exepid process 1124 NovaRecoil.exe -
Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
Processes:
schtasks.exeschtasks.exepid process 2784 schtasks.exe 3728 schtasks.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
solara.exeNovaRecoil.exedescription pid process Token: SeDebugPrivilege 396 solara.exe Token: SeDebugPrivilege 1124 NovaRecoil.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
NovaRecoil.exepid process 1124 NovaRecoil.exe -
Suspicious use of WriteProcessMemory 6 IoCs
Processes:
solara.exeNovaRecoil.exedescription pid process target process PID 396 wrote to memory of 2784 396 solara.exe schtasks.exe PID 396 wrote to memory of 2784 396 solara.exe schtasks.exe PID 396 wrote to memory of 1124 396 solara.exe NovaRecoil.exe PID 396 wrote to memory of 1124 396 solara.exe NovaRecoil.exe PID 1124 wrote to memory of 3728 1124 NovaRecoil.exe schtasks.exe PID 1124 wrote to memory of 3728 1124 NovaRecoil.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\solara.exe"C:\Users\Admin\AppData\Local\Temp\solara.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:396 -
C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "REC" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\NovaRecoil.exe" /rl HIGHEST /f2⤵
- Scheduled Task/Job: Scheduled Task
PID:2784 -
C:\Users\Admin\AppData\Roaming\SubDir\NovaRecoil.exe"C:\Users\Admin\AppData\Roaming\SubDir\NovaRecoil.exe"2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1124 -
C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "REC" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\NovaRecoil.exe" /rl HIGHEST /f3⤵
- Scheduled Task/Job: Scheduled Task
PID:3728
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
3.1MB
MD51bdf6c7fda1c36dab1558b37aeb0d631
SHA19f7dc44275ee93dd42a8bffba2fc905c5ea56c24
SHA256b7871caa008e2b9b56b23b6d9623064e6f773b58e5508b41001d125e29d71956
SHA51252ddf7ee9b33cbd0fbd0f753cabb32763f2789a42abe995420f6a5d79aa9f841bb3707d088c29c5a9908f7e5c008f69e6f1971d36b2e0baedbe7ab2ac0cce0ce