Analysis
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max time kernel
147s -
max time network
156s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
30/03/2024, 02:19
Behavioral task
behavioral1
Sample
c88caddc2a450135e7f7d36d8b9857628b96f97b67d782025b229034d34f9582.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
c88caddc2a450135e7f7d36d8b9857628b96f97b67d782025b229034d34f9582.exe
Resource
win10v2004-20240226-en
General
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Target
c88caddc2a450135e7f7d36d8b9857628b96f97b67d782025b229034d34f9582.exe
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Size
3.1MB
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MD5
c4497b459274cec0b9fd6e3ac6c67aaa
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SHA1
1c8b8e42b8284b6dc2d2741850a9c01c07a5088f
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SHA256
c88caddc2a450135e7f7d36d8b9857628b96f97b67d782025b229034d34f9582
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SHA512
bf64fd7a95dedd703a04cf661b35ebaa343dd7b2e907d1de20d16bcb91259b76ba9f80a817d391487eb5c4f549658ba545673b3b3f26cc45e0a16fecfff01c24
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SSDEEP
49152:Cvguf2NUaNmwzPWlvdaKM7ZxTwW3xbbRYLoGd7THHB72eh2NT:Cv/f2NUaNmwzPWlvdaB7ZxTwW3xQ
Malware Config
Extracted
quasar
1.4.1
50 installs
217.63.234.90:4444
217.63.234.90:1313
127.0.0.1:1313
ef23a66e-d8e1-48c7-a533-50e2b78bea4a
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encryption_key
6B0D9CDFBF22251A89F554E059B7463C8CDE0F0C
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install_name
svchost.exe
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log_directory
Logs50spread
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reconnect_delay
3000
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startup_key
svchost.exe
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subdirectory
SubDir
Signatures
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Quasar payload 2 IoCs
resource yara_rule behavioral2/memory/2376-0-0x0000000000B70000-0x0000000000E94000-memory.dmp family_quasar behavioral2/files/0x000300000001e809-6.dat family_quasar -
Detects Windows executables referencing non-Windows User-Agents 2 IoCs
resource yara_rule behavioral2/memory/2376-0-0x0000000000B70000-0x0000000000E94000-memory.dmp INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA behavioral2/files/0x000300000001e809-6.dat INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA -
Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers. 2 IoCs
resource yara_rule behavioral2/memory/2376-0-0x0000000000B70000-0x0000000000E94000-memory.dmp INDICATOR_SUSPICIOUS_Binary_References_Browsers behavioral2/files/0x000300000001e809-6.dat INDICATOR_SUSPICIOUS_Binary_References_Browsers -
Detects executables containing common artifacts observed in infostealers 2 IoCs
resource yara_rule behavioral2/memory/2376-0-0x0000000000B70000-0x0000000000E94000-memory.dmp INDICATOR_SUSPICIOUS_GENInfoStealer behavioral2/files/0x000300000001e809-6.dat INDICATOR_SUSPICIOUS_GENInfoStealer -
Executes dropped EXE 1 IoCs
pid Process 2168 svchost.exe -
Creates scheduled task(s) 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 2920 schtasks.exe 3552 schtasks.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 2376 c88caddc2a450135e7f7d36d8b9857628b96f97b67d782025b229034d34f9582.exe Token: SeDebugPrivilege 2168 svchost.exe -
Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 2376 wrote to memory of 3552 2376 c88caddc2a450135e7f7d36d8b9857628b96f97b67d782025b229034d34f9582.exe 88 PID 2376 wrote to memory of 3552 2376 c88caddc2a450135e7f7d36d8b9857628b96f97b67d782025b229034d34f9582.exe 88 PID 2376 wrote to memory of 2168 2376 c88caddc2a450135e7f7d36d8b9857628b96f97b67d782025b229034d34f9582.exe 90 PID 2376 wrote to memory of 2168 2376 c88caddc2a450135e7f7d36d8b9857628b96f97b67d782025b229034d34f9582.exe 90 PID 2168 wrote to memory of 2920 2168 svchost.exe 91 PID 2168 wrote to memory of 2920 2168 svchost.exe 91 -
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\c88caddc2a450135e7f7d36d8b9857628b96f97b67d782025b229034d34f9582.exe"C:\Users\Admin\AppData\Local\Temp\c88caddc2a450135e7f7d36d8b9857628b96f97b67d782025b229034d34f9582.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2376 -
C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "svchost.exe" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\svchost.exe" /rl HIGHEST /f2⤵
- Creates scheduled task(s)
PID:3552
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C:\Users\Admin\AppData\Roaming\SubDir\svchost.exe"C:\Users\Admin\AppData\Roaming\SubDir\svchost.exe"2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2168 -
C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "svchost.exe" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\svchost.exe" /rl HIGHEST /f3⤵
- Creates scheduled task(s)
PID:2920
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
3.1MB
MD5c4497b459274cec0b9fd6e3ac6c67aaa
SHA11c8b8e42b8284b6dc2d2741850a9c01c07a5088f
SHA256c88caddc2a450135e7f7d36d8b9857628b96f97b67d782025b229034d34f9582
SHA512bf64fd7a95dedd703a04cf661b35ebaa343dd7b2e907d1de20d16bcb91259b76ba9f80a817d391487eb5c4f549658ba545673b3b3f26cc45e0a16fecfff01c24