Analysis
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max time kernel
30s -
max time network
26s -
platform
windows10-2004_x64 -
resource
win10v2004-20231215-en -
resource tags
arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system -
submitted
12-02-2024 17:43
Static task
static1
General
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Target
Uni.bat
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Size
14.9MB
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MD5
a04be134083f16f41a3f08162614da27
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SHA1
7d90c58f7af0b10cd404da2df22640ac0da75a90
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SHA256
b3f58c9c8cdc767f47ba79a89b8562af01bc1c68485a2c453adba2292f84dd26
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SHA512
f1270f896c13c191d1bbe443eb66950240d3d39f3b0fed639751fdcf1f3f95e205ce3bee47401e089333b976752aae23ec87163896dc58200c66ed1712973846
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SSDEEP
49152:zncqI9jt+YbH6/BYYrunkbDwbSBU0b1W2R+SFLNXtpEmRwbj4VzjI78/CKFTp7J3:L
Malware Config
Extracted
quasar
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reconnect_delay
3000
Signatures
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Quasar payload 1 IoCs
Processes:
resource yara_rule behavioral1/memory/4300-80-0x000001E569C70000-0x000001E56A414000-memory.dmp family_quasar -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
$sxr-mshta.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-3791175113-1062217823-1177695025-1000\Control Panel\International\Geo\Nation $sxr-mshta.exe -
Deletes itself 1 IoCs
Processes:
powershell.exepid process 4624 powershell.exe -
Executes dropped EXE 3 IoCs
Processes:
$sxr-mshta.exe$sxr-cmd.exe$sxr-powershell.exepid process 1876 $sxr-mshta.exe 2944 $sxr-cmd.exe 4300 $sxr-powershell.exe -
Drops file in Windows directory 6 IoCs
Processes:
powershell.exedescription ioc process File opened for modification C:\Windows\$sxr-powershell.exe powershell.exe File created C:\Windows\$sxr-mshta.exe powershell.exe File opened for modification C:\Windows\$sxr-mshta.exe powershell.exe File created C:\Windows\$sxr-cmd.exe powershell.exe File opened for modification C:\Windows\$sxr-cmd.exe powershell.exe File created C:\Windows\$sxr-powershell.exe powershell.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Modifies registry class 1 IoCs
Processes:
$sxr-mshta.exedescription ioc process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\ $sxr-mshta.exe -
Suspicious behavior: EnumeratesProcesses 12 IoCs
Processes:
powershell.exe$sxr-powershell.exepid process 4624 powershell.exe 4624 powershell.exe 4624 powershell.exe 4624 powershell.exe 4624 powershell.exe 4624 powershell.exe 4300 $sxr-powershell.exe 4300 $sxr-powershell.exe 4300 $sxr-powershell.exe 4300 $sxr-powershell.exe 4300 $sxr-powershell.exe 4300 $sxr-powershell.exe -
Suspicious use of AdjustPrivilegeToken 6 IoCs
Processes:
powershell.exe$sxr-powershell.exedescription pid process Token: SeDebugPrivilege 4624 powershell.exe Token: SeDebugPrivilege 4624 powershell.exe Token: SeDebugPrivilege 4624 powershell.exe Token: SeDebugPrivilege 4300 $sxr-powershell.exe Token: SeDebugPrivilege 4300 $sxr-powershell.exe Token: SeDebugPrivilege 4300 $sxr-powershell.exe -
Suspicious use of WriteProcessMemory 38 IoCs
Processes:
cmd.exe$sxr-mshta.exe$sxr-cmd.exe$sxr-powershell.exelsass.exedescription pid process target process PID 4688 wrote to memory of 116 4688 cmd.exe cmd.exe PID 4688 wrote to memory of 116 4688 cmd.exe cmd.exe PID 4688 wrote to memory of 4624 4688 cmd.exe powershell.exe PID 4688 wrote to memory of 4624 4688 cmd.exe powershell.exe PID 1876 wrote to memory of 2944 1876 $sxr-mshta.exe $sxr-cmd.exe PID 1876 wrote to memory of 2944 1876 $sxr-mshta.exe $sxr-cmd.exe PID 2944 wrote to memory of 2080 2944 $sxr-cmd.exe cmd.exe PID 2944 wrote to memory of 2080 2944 $sxr-cmd.exe cmd.exe PID 2944 wrote to memory of 4300 2944 $sxr-cmd.exe $sxr-powershell.exe PID 2944 wrote to memory of 4300 2944 $sxr-cmd.exe $sxr-powershell.exe PID 4300 wrote to memory of 676 4300 $sxr-powershell.exe lsass.exe PID 4300 wrote to memory of 952 4300 $sxr-powershell.exe svchost.exe PID 4300 wrote to memory of 316 4300 $sxr-powershell.exe dwm.exe PID 4300 wrote to memory of 408 4300 $sxr-powershell.exe svchost.exe PID 4300 wrote to memory of 684 4300 $sxr-powershell.exe svchost.exe PID 4300 wrote to memory of 948 4300 $sxr-powershell.exe svchost.exe PID 4300 wrote to memory of 1072 4300 $sxr-powershell.exe svchost.exe PID 4300 wrote to memory of 1084 4300 $sxr-powershell.exe svchost.exe PID 4300 wrote to memory of 1192 4300 $sxr-powershell.exe svchost.exe PID 4300 wrote to memory of 1216 4300 $sxr-powershell.exe svchost.exe PID 4300 wrote to memory of 1256 4300 $sxr-powershell.exe svchost.exe PID 4300 wrote to memory of 1308 4300 $sxr-powershell.exe svchost.exe PID 4300 wrote to memory of 1408 4300 $sxr-powershell.exe svchost.exe PID 4300 wrote to memory of 1432 4300 $sxr-powershell.exe svchost.exe PID 4300 wrote to memory of 1508 4300 $sxr-powershell.exe svchost.exe PID 4300 wrote to memory of 1524 4300 $sxr-powershell.exe svchost.exe PID 4300 wrote to memory of 1584 4300 $sxr-powershell.exe svchost.exe PID 4300 wrote to memory of 1644 4300 $sxr-powershell.exe svchost.exe PID 4300 wrote to memory of 1700 4300 $sxr-powershell.exe svchost.exe PID 676 wrote to memory of 2796 676 lsass.exe sysmon.exe PID 4300 wrote to memory of 1756 4300 $sxr-powershell.exe svchost.exe PID 4300 wrote to memory of 1780 4300 $sxr-powershell.exe svchost.exe PID 4300 wrote to memory of 1868 4300 $sxr-powershell.exe svchost.exe PID 4300 wrote to memory of 1992 4300 $sxr-powershell.exe svchost.exe PID 4300 wrote to memory of 2004 4300 $sxr-powershell.exe svchost.exe PID 4300 wrote to memory of 1320 4300 $sxr-powershell.exe svchost.exe PID 4300 wrote to memory of 1948 4300 $sxr-powershell.exe svchost.exe PID 4300 wrote to memory of 2116 4300 $sxr-powershell.exe spoolsv.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:\Windows\system32\lsass.exeC:\Windows\system32\lsass.exe1⤵
- Suspicious use of WriteProcessMemory
PID:676
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k DcomLaunch -p -s LSM1⤵PID:952
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C:\Windows\system32\dwm.exe"dwm.exe"1⤵PID:316
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k netsvcs -p -s DsmSvc1⤵PID:684
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C:\Windows\System32\svchost.exeC:\Windows\System32\svchost.exe -k LocalServiceNetworkRestricted -p -s lmhosts1⤵PID:948
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k netsvcs -p -s gpsvc1⤵PID:408
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C:\Windows\System32\svchost.exeC:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted -p -s NcbService1⤵PID:1072
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C:\Windows\System32\svchost.exeC:\Windows\System32\svchost.exe -k LocalServiceNetworkRestricted -p -s EventLog1⤵PID:1216
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k LocalService -p -s DispBrokerDesktopSvc1⤵PID:1256
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k netsvcs -p -s Schedule1⤵PID:1192
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C:\Windows\$sxr-mshta.exeC:\Windows\$sxr-mshta.exe "javascript:document['wr'+'it'+'e']('<h'+'tm'+'l>'+'<s'+'cr'+'ip'+'t\x20'+'la'+'ng'+'ua'+'ge'+'=\x22'+'VB'+'Sc'+'ri'+'pt'+'\x22>'+'Se'+'t\x20'+'ob'+'jS'+'he'+'ll'+'\x20='+'\x20C'+'re'+'at'+'eO'+'bj'+'ec'+'t('+'\x22W'+'Sc'+'ri'+'pt'+'.S'+'he'+'ll'+'\x22)'+'\x20:'+'\x20o'+'bj'+'Sh'+'el'+'l.'+'Ru'+'n\x20'+'\x22C:\\Windows\\$sxr-c'+'md'+'.e'+'xe'+'\x20/'+'c %'+'$sxr-qMfAojYxqLWMOUptcaej4312:LfdqWMGt=%'+'\x22,'+'\x200'+',\x20'+'Tr'+'ue'+'</'+'sc'+'ri'+'pt'+'><'+'/h'+'tm'+'l>');close();"2⤵
- Checks computer location settings
- Executes dropped EXE
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:1876 -
C:\Windows\$sxr-cmd.exe"C:\Windows\$sxr-cmd.exe" /c %$sxr-qMfAojYxqLWMOUptcaej4312:LfdqWMGt=%3⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:2944 -
C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /S /D /c" echo Invoke-Expression $env:UbrazmCGEu; "4⤵PID:2080
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C:\Windows\$sxr-powershell.exeC:\Windows\$sxr-powershell.exe -NoLogo -NoProfile -Noninteractive -WindowStyle hidden -ExecutionPolicy bypass4⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4300
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k LocalServiceNetworkRestricted -p -s TimeBrokerSvc1⤵PID:1084
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k netsvcs -p -s ProfSvc1⤵PID:1308
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k appmodel -p -s StateRepository1⤵PID:1992
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C:\Windows\sysmon.exeC:\Windows\sysmon.exe1⤵PID:2796
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C:\Windows\System32\spoolsv.exeC:\Windows\System32\spoolsv.exe1⤵PID:2116
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C:\Windows\System32\svchost.exeC:\Windows\System32\svchost.exe -k netsvcs -p -s ShellHWDetection1⤵PID:1948
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C:\Windows\System32\svchost.exeC:\Windows\System32\svchost.exe -k LocalServiceNetworkRestricted -p1⤵PID:1320
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k NetworkService -p -s Dnscache1⤵PID:2004
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C:\Windows\System32\svchost.exeC:\Windows\System32\svchost.exe -k LocalServiceNetworkRestricted -p1⤵PID:1868
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C:\Windows\System32\svchost.exeC:\Windows\System32\svchost.exe -k LocalService -p -s netprofm1⤵PID:1780
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C:\Windows\System32\svchost.exeC:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted -p -s AudioEndpointBuilder1⤵PID:1756
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C:\Windows\System32\svchost.exeC:\Windows\System32\svchost.exe -k NetworkService -p -s NlaSvc1⤵PID:1700
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k netsvcs -p -s SENS1⤵PID:1644
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k LocalServiceNetworkRestricted -p -s Dhcp1⤵PID:1584
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C:\Windows\System32\svchost.exeC:\Windows\System32\svchost.exe -k netsvcs -p -s Themes1⤵PID:1524
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k LocalService -p -s EventSystem1⤵PID:1508
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k netsvcs -p -s UserManager1⤵PID:1432
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k LocalService -p -s nsi1⤵PID:1408
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C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\Uni.bat"1⤵
- Suspicious use of WriteProcessMemory
PID:4688 -
C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /S /D /c" echo Invoke-Expression $env:VINrjdIMAm; "2⤵PID:116
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exeC:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe -ep bypass -noprofile -windowstyle hidden2⤵
- Deletes itself
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4624
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
53KB
MD5a26df49623eff12a70a93f649776dab7
SHA1efb53bd0df3ac34bd119adf8788127ad57e53803
SHA2564ebde1c12625cb55034d47e5169f709b0bd02a8caa76b5b9854efad7f4710245
SHA512e5f9b8645fb2a50763fcbffe877ca03e9cadf099fe2d510b74bfa9ff18d0a6563d11160e00f495eeefebde63450d0ade8d6b6a824e68bd8a59e1971dc842709c
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
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Filesize
283KB
MD58a2122e8162dbef04694b9c3e0b6cdee
SHA1f1efb0fddc156e4c61c5f78a54700e4e7984d55d
SHA256b99d61d874728edc0918ca0eb10eab93d381e7367e377406e65963366c874450
SHA51299e784141193275d4364ba1b8762b07cc150ca3cb7e9aa1d4386ba1fa87e073d0500e61572f8d1b071f2faa2a51bb123e12d9d07054b59a1a2fd768ad9f24397
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Filesize
14KB
MD50b4340ed812dc82ce636c00fa5c9bef2
SHA151c97ebe601ef079b16bcd87af827b0be5283d96
SHA256dba3137811c686fd35e418d76184070e031f207002649da95385dfd05a8bb895
SHA512d9df8c1f093ea0f7bde9c356349b2ba43e3ca04b4c87c0f33ab89dda5afe9966313a09b60720aa22a1a25d43d7c71a060af93fb8f6488201a0e301c83fa18045
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Filesize
442KB
MD504029e121a0cfa5991749937dd22a1d9
SHA1f43d9bb316e30ae1a3494ac5b0624f6bea1bf054
SHA2569f914d42706fe215501044acd85a32d58aaef1419d404fddfa5d3b48f66ccd9f
SHA5126a2fb055473033fd8fdb8868823442875b5b60c115031aaeda688a35a092f6278e8687e2ae2b8dc097f8f3f35d23959757bf0c408274a2ef5f40ddfa4b5c851b