Analysis
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max time kernel
147s -
max time network
148s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
30/03/2024, 02:08
Behavioral task
behavioral1
Sample
4b49068a198e8dcc90d1ae5d623c2cf669c93e067573b26c880b56b14e550e3a.exe
Resource
win7-20240221-en
General
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Target
4b49068a198e8dcc90d1ae5d623c2cf669c93e067573b26c880b56b14e550e3a.exe
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Size
3.1MB
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MD5
b05ef4b68b309f9aefa705d3c0ab50e1
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SHA1
ffbf50f019be8426868b616960713fa4f596905c
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SHA256
4b49068a198e8dcc90d1ae5d623c2cf669c93e067573b26c880b56b14e550e3a
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SHA512
e77b2fd9d92fd286cedd1f7a70767968a9048b02206493b43aaac11b73a29fbc8819a28f2fb7b765c87cfbf734fad0fda40483bb495a2f177833c31a5ce9294b
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SSDEEP
49152:2vPI22SsaNYfdPBldt698dBcjHKyRJ68bR3LoGdJJTHHB72eh2NT:2vA22SsaNYfdPBldt6+dBcjHKyRJ6GZ
Malware Config
Extracted
quasar
1.4.1
1st
94.156.8.44:4787
94.156.8.44:6606
8c89b218-c255-48cb-be3d-4ac14fe780fa
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encryption_key
4785083178D87EB2AD342D8849D0672AE29F1744
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install_name
softgui.exe
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log_directory
Logs
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reconnect_delay
3000
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startup_key
softgui.svc
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subdirectory
SubDir
Signatures
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Quasar payload 3 IoCs
resource yara_rule behavioral1/memory/2792-0-0x0000000000B70000-0x0000000000E94000-memory.dmp family_quasar behavioral1/files/0x000e000000013420-7.dat family_quasar behavioral1/memory/796-10-0x0000000001370000-0x0000000001694000-memory.dmp family_quasar -
Detects Windows executables referencing non-Windows User-Agents 3 IoCs
resource yara_rule behavioral1/memory/2792-0-0x0000000000B70000-0x0000000000E94000-memory.dmp INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA behavioral1/files/0x000e000000013420-7.dat INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA behavioral1/memory/796-10-0x0000000001370000-0x0000000001694000-memory.dmp INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA -
Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers. 3 IoCs
resource yara_rule behavioral1/memory/2792-0-0x0000000000B70000-0x0000000000E94000-memory.dmp INDICATOR_SUSPICIOUS_Binary_References_Browsers behavioral1/files/0x000e000000013420-7.dat INDICATOR_SUSPICIOUS_Binary_References_Browsers behavioral1/memory/796-10-0x0000000001370000-0x0000000001694000-memory.dmp INDICATOR_SUSPICIOUS_Binary_References_Browsers -
Detects executables containing common artifacts observed in infostealers 3 IoCs
resource yara_rule behavioral1/memory/2792-0-0x0000000000B70000-0x0000000000E94000-memory.dmp INDICATOR_SUSPICIOUS_GENInfoStealer behavioral1/files/0x000e000000013420-7.dat INDICATOR_SUSPICIOUS_GENInfoStealer behavioral1/memory/796-10-0x0000000001370000-0x0000000001694000-memory.dmp INDICATOR_SUSPICIOUS_GENInfoStealer -
Executes dropped EXE 1 IoCs
pid Process 796 softgui.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Creates scheduled task(s) 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 1936 schtasks.exe 2644 schtasks.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 2792 4b49068a198e8dcc90d1ae5d623c2cf669c93e067573b26c880b56b14e550e3a.exe Token: SeDebugPrivilege 796 softgui.exe -
Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 796 softgui.exe -
Suspicious use of SendNotifyMessage 1 IoCs
pid Process 796 softgui.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 796 softgui.exe -
Suspicious use of WriteProcessMemory 9 IoCs
description pid Process procid_target PID 2792 wrote to memory of 1936 2792 4b49068a198e8dcc90d1ae5d623c2cf669c93e067573b26c880b56b14e550e3a.exe 28 PID 2792 wrote to memory of 1936 2792 4b49068a198e8dcc90d1ae5d623c2cf669c93e067573b26c880b56b14e550e3a.exe 28 PID 2792 wrote to memory of 1936 2792 4b49068a198e8dcc90d1ae5d623c2cf669c93e067573b26c880b56b14e550e3a.exe 28 PID 2792 wrote to memory of 796 2792 4b49068a198e8dcc90d1ae5d623c2cf669c93e067573b26c880b56b14e550e3a.exe 30 PID 2792 wrote to memory of 796 2792 4b49068a198e8dcc90d1ae5d623c2cf669c93e067573b26c880b56b14e550e3a.exe 30 PID 2792 wrote to memory of 796 2792 4b49068a198e8dcc90d1ae5d623c2cf669c93e067573b26c880b56b14e550e3a.exe 30 PID 796 wrote to memory of 2644 796 softgui.exe 31 PID 796 wrote to memory of 2644 796 softgui.exe 31 PID 796 wrote to memory of 2644 796 softgui.exe 31 -
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\4b49068a198e8dcc90d1ae5d623c2cf669c93e067573b26c880b56b14e550e3a.exe"C:\Users\Admin\AppData\Local\Temp\4b49068a198e8dcc90d1ae5d623c2cf669c93e067573b26c880b56b14e550e3a.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2792 -
C:\Windows\system32\schtasks.exe"schtasks" /create /tn "softgui.svc" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\softgui.exe" /rl HIGHEST /f2⤵
- Creates scheduled task(s)
PID:1936
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C:\Users\Admin\AppData\Roaming\SubDir\softgui.exe"C:\Users\Admin\AppData\Roaming\SubDir\softgui.exe"2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:796 -
C:\Windows\system32\schtasks.exe"schtasks" /create /tn "softgui.svc" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\softgui.exe" /rl HIGHEST /f3⤵
- Creates scheduled task(s)
PID:2644
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
3.1MB
MD5b05ef4b68b309f9aefa705d3c0ab50e1
SHA1ffbf50f019be8426868b616960713fa4f596905c
SHA2564b49068a198e8dcc90d1ae5d623c2cf669c93e067573b26c880b56b14e550e3a
SHA512e77b2fd9d92fd286cedd1f7a70767968a9048b02206493b43aaac11b73a29fbc8819a28f2fb7b765c87cfbf734fad0fda40483bb495a2f177833c31a5ce9294b