Analysis
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max time kernel
1678s -
max time network
1780s -
platform
windows7_x64 -
resource
win7-20231129-en -
resource tags
arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system -
submitted
08-05-2024 17:26
Behavioral task
behavioral1
Sample
Uni.exe
Resource
win10-20240404-en
Behavioral task
behavioral2
Sample
Uni.exe
Resource
win7-20231129-en
Behavioral task
behavioral3
Sample
Uni.exe
Resource
win10v2004-20240426-en
General
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Target
Uni.exe
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Size
409KB
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MD5
7417c8c73e614f293152575f46134216
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SHA1
cc68f7f5e7c769efb5b3e06bfb3a2f9329f37805
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SHA256
00c7cb06bebe0da961155dc00f7ea7f96a3b04c89ae82408e7ece6968c91c3c3
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SHA512
897a859e609028157f2721d76b97497d4b9f821d2b8be3359d1192ddc3a83d4b7449db25c63c3c260067b796c122194c48747dc611c98dc1e33aab82a20b98b0
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SSDEEP
6144:nMr2pJAJcC0B632U3GRbMfgvKFFhTEDPX1NbKoEn5MSU+h2f8/14m:LpyJcC+82U3GRGGp1M5Ys2f8/6m
Malware Config
Extracted
quasar
3.1.5
SLAVE
even-lemon.gl.at.ply.gg:33587
$Sxr-dOMA5C0pQTTpKjVsCp
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encryption_key
UBXs44u6E81wxBGZxQHk
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install_name
$sxr-powershell.exe
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log_directory
$SXR-KEYLOGS
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reconnect_delay
3000
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startup_key
$sxr-powershell
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subdirectory
$sxr-seroxen2
Signatures
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Quasar payload 3 IoCs
Processes:
resource yara_rule behavioral2/memory/2168-1-0x0000000000860000-0x00000000008CC000-memory.dmp family_quasar \Users\Admin\AppData\Roaming\$sxr-seroxen2\$sxr-powershell.exe family_quasar behavioral2/memory/2644-10-0x0000000000350000-0x00000000003BC000-memory.dmp family_quasar -
Executes dropped EXE 1 IoCs
Processes:
$sxr-powershell.exepid process 2644 $sxr-powershell.exe -
Loads dropped DLL 1 IoCs
Processes:
Uni.exepid process 2168 Uni.exe -
Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
Processes:
flow ioc 2 ip-api.com -
Creates scheduled task(s) 1 TTPs 3 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
Processes:
schtasks.exeschtasks.exeSCHTASKS.exepid process 2252 schtasks.exe 2736 schtasks.exe 2448 SCHTASKS.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
Uni.exe$sxr-powershell.exedescription pid process Token: SeDebugPrivilege 2168 Uni.exe Token: SeDebugPrivilege 2644 $sxr-powershell.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
$sxr-powershell.exepid process 2644 $sxr-powershell.exe -
Suspicious use of WriteProcessMemory 16 IoCs
Processes:
Uni.exe$sxr-powershell.exedescription pid process target process PID 2168 wrote to memory of 2252 2168 Uni.exe schtasks.exe PID 2168 wrote to memory of 2252 2168 Uni.exe schtasks.exe PID 2168 wrote to memory of 2252 2168 Uni.exe schtasks.exe PID 2168 wrote to memory of 2252 2168 Uni.exe schtasks.exe PID 2168 wrote to memory of 2644 2168 Uni.exe $sxr-powershell.exe PID 2168 wrote to memory of 2644 2168 Uni.exe $sxr-powershell.exe PID 2168 wrote to memory of 2644 2168 Uni.exe $sxr-powershell.exe PID 2168 wrote to memory of 2644 2168 Uni.exe $sxr-powershell.exe PID 2644 wrote to memory of 2736 2644 $sxr-powershell.exe schtasks.exe PID 2644 wrote to memory of 2736 2644 $sxr-powershell.exe schtasks.exe PID 2644 wrote to memory of 2736 2644 $sxr-powershell.exe schtasks.exe PID 2644 wrote to memory of 2736 2644 $sxr-powershell.exe schtasks.exe PID 2168 wrote to memory of 2448 2168 Uni.exe SCHTASKS.exe PID 2168 wrote to memory of 2448 2168 Uni.exe SCHTASKS.exe PID 2168 wrote to memory of 2448 2168 Uni.exe SCHTASKS.exe PID 2168 wrote to memory of 2448 2168 Uni.exe SCHTASKS.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\Uni.exe"C:\Users\Admin\AppData\Local\Temp\Uni.exe"1⤵
- Loads dropped DLL
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exe"schtasks" /create /tn "$sxr-powershell" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\Uni.exe" /rl HIGHEST /f2⤵
- Creates scheduled task(s)
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C:\Users\Admin\AppData\Roaming\$sxr-seroxen2\$sxr-powershell.exe"C:\Users\Admin\AppData\Roaming\$sxr-seroxen2\$sxr-powershell.exe"2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exe"schtasks" /create /tn "$sxr-powershell" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\$sxr-seroxen2\$sxr-powershell.exe" /rl HIGHEST /f3⤵
- Creates scheduled task(s)
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C:\Windows\SysWOW64\SCHTASKS.exe"SCHTASKS.exe" /create /tn "$77Uni.exe" /tr "'C:\Users\Admin\AppData\Local\Temp\Uni.exe'" /sc onlogon /rl HIGHEST2⤵
- Creates scheduled task(s)
Network
MITRE ATT&CK Matrix ATT&CK v13
Replay Monitor
Loading Replay Monitor...
Downloads
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\Users\Admin\AppData\Roaming\$sxr-seroxen2\$sxr-powershell.exeFilesize
409KB
MD57417c8c73e614f293152575f46134216
SHA1cc68f7f5e7c769efb5b3e06bfb3a2f9329f37805
SHA25600c7cb06bebe0da961155dc00f7ea7f96a3b04c89ae82408e7ece6968c91c3c3
SHA512897a859e609028157f2721d76b97497d4b9f821d2b8be3359d1192ddc3a83d4b7449db25c63c3c260067b796c122194c48747dc611c98dc1e33aab82a20b98b0
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memory/2168-0-0x000000007469E000-0x000000007469F000-memory.dmpFilesize
4KB
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memory/2168-1-0x0000000000860000-0x00000000008CC000-memory.dmpFilesize
432KB
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memory/2168-2-0x0000000074690000-0x0000000074D7E000-memory.dmpFilesize
6.9MB
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memory/2168-14-0x0000000074690000-0x0000000074D7E000-memory.dmpFilesize
6.9MB
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memory/2644-11-0x0000000074690000-0x0000000074D7E000-memory.dmpFilesize
6.9MB
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memory/2644-10-0x0000000000350000-0x00000000003BC000-memory.dmpFilesize
432KB
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memory/2644-12-0x0000000074690000-0x0000000074D7E000-memory.dmpFilesize
6.9MB
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memory/2644-15-0x0000000074690000-0x0000000074D7E000-memory.dmpFilesize
6.9MB
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memory/2644-16-0x0000000074690000-0x0000000074D7E000-memory.dmpFilesize
6.9MB