Analysis
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max time kernel
45s -
max time network
48s -
platform
windows10-2004_x64 -
resource
win10v2004-20240802-en -
resource tags
arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system -
submitted
03-09-2024 07:21
Static task
static1
Behavioral task
behavioral1
Sample
vbojcjwr.exe
Resource
win7-20240729-en
Behavioral task
behavioral2
Sample
vbojcjwr.exe
Resource
win10v2004-20240802-en
General
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Target
vbojcjwr.exe
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Size
14.6MB
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MD5
0b6833eac88372fe36ddb7217eca8b41
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SHA1
240c3b81c19be5b09d140bbd9a35060f4a7a7573
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SHA256
4a5face1152fe18fd167e2f785857e0e4266997ff8d74285fa920bcb83523ca8
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SHA512
2d60e25ba50d496b3f359deb713e2c206edbffb6bd2233729ad0bba87cb247ba5bb6a3c0f6d3a6f5bcde3b58e3c58259490c62bff14769efff6f77280069519b
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SSDEEP
6144:qw0VDy74AW/47pwSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSn:qw0VD7AW/49
Malware Config
Extracted
tofsee
svartalfheim.top
jotunheim.name
Signatures
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Creates new service(s) 2 TTPs
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Modifies Windows Firewall 2 TTPs 1 IoCs
Processes:
netsh.exepid process 2568 netsh.exe -
Sets service image path in registry 2 TTPs 1 IoCs
Processes:
svchost.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\kvfihnwa\ImagePath = "C:\\Windows\\SysWOW64\\kvfihnwa\\syqfkdu.exe" svchost.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
vbojcjwr.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-1302416131-1437503476-2806442725-1000\Control Panel\International\Geo\Nation vbojcjwr.exe -
Deletes itself 1 IoCs
Processes:
svchost.exepid process 4440 svchost.exe -
Executes dropped EXE 1 IoCs
Processes:
syqfkdu.exepid process 4880 syqfkdu.exe -
Drops file in System32 directory 1 IoCs
Processes:
svchost.exedescription ioc process File created C:\Windows\SysWOW64\config\systemprofile:.repos svchost.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
syqfkdu.exedescription pid process target process PID 4880 set thread context of 4440 4880 syqfkdu.exe svchost.exe -
Launches sc.exe 3 IoCs
Sc.exe is a Windows utlilty to control services on the system.
Processes:
sc.exesc.exesc.exepid process 736 sc.exe 2820 sc.exe 4304 sc.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Event Triggered Execution: Netsh Helper DLL 1 TTPs 3 IoCs
Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.
Processes:
netsh.exedescription ioc process Key queried \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh netsh.exe Key value enumerated \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh netsh.exe Key opened \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh netsh.exe -
Program crash 2 IoCs
Processes:
WerFault.exeWerFault.exepid pid_target process target process 1428 4004 WerFault.exe vbojcjwr.exe 680 4880 WerFault.exe syqfkdu.exe -
System Location Discovery: System Language Discovery 1 TTPs 9 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
Processes:
syqfkdu.exevbojcjwr.execmd.exesc.exenetsh.execmd.exesc.exesc.exesvchost.exedescription ioc process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language syqfkdu.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language vbojcjwr.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cmd.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language sc.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language netsh.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cmd.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language sc.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language sc.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language svchost.exe -
Modifies data under HKEY_USERS 2 IoCs
Processes:
svchost.exedescription ioc process Key created \REGISTRY\USER\.DEFAULT\Control Panel\Buses svchost.exe Set value (data) \REGISTRY\USER\.DEFAULT\Control Panel\Buses\Config0 = 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 svchost.exe -
Suspicious use of WriteProcessMemory 23 IoCs
Processes:
vbojcjwr.exesyqfkdu.exedescription pid process target process PID 4004 wrote to memory of 1840 4004 vbojcjwr.exe cmd.exe PID 4004 wrote to memory of 1840 4004 vbojcjwr.exe cmd.exe PID 4004 wrote to memory of 1840 4004 vbojcjwr.exe cmd.exe PID 4004 wrote to memory of 4112 4004 vbojcjwr.exe cmd.exe PID 4004 wrote to memory of 4112 4004 vbojcjwr.exe cmd.exe PID 4004 wrote to memory of 4112 4004 vbojcjwr.exe cmd.exe PID 4004 wrote to memory of 4304 4004 vbojcjwr.exe sc.exe PID 4004 wrote to memory of 4304 4004 vbojcjwr.exe sc.exe PID 4004 wrote to memory of 4304 4004 vbojcjwr.exe sc.exe PID 4004 wrote to memory of 736 4004 vbojcjwr.exe sc.exe PID 4004 wrote to memory of 736 4004 vbojcjwr.exe sc.exe PID 4004 wrote to memory of 736 4004 vbojcjwr.exe sc.exe PID 4004 wrote to memory of 2820 4004 vbojcjwr.exe sc.exe PID 4004 wrote to memory of 2820 4004 vbojcjwr.exe sc.exe PID 4004 wrote to memory of 2820 4004 vbojcjwr.exe sc.exe PID 4004 wrote to memory of 2568 4004 vbojcjwr.exe netsh.exe PID 4004 wrote to memory of 2568 4004 vbojcjwr.exe netsh.exe PID 4004 wrote to memory of 2568 4004 vbojcjwr.exe netsh.exe PID 4880 wrote to memory of 4440 4880 syqfkdu.exe svchost.exe PID 4880 wrote to memory of 4440 4880 syqfkdu.exe svchost.exe PID 4880 wrote to memory of 4440 4880 syqfkdu.exe svchost.exe PID 4880 wrote to memory of 4440 4880 syqfkdu.exe svchost.exe PID 4880 wrote to memory of 4440 4880 syqfkdu.exe svchost.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\vbojcjwr.exe"C:\Users\Admin\AppData\Local\Temp\vbojcjwr.exe"1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4004 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\kvfihnwa\2⤵
- System Location Discovery: System Language Discovery
PID:1840 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\syqfkdu.exe" C:\Windows\SysWOW64\kvfihnwa\2⤵
- System Location Discovery: System Language Discovery
PID:4112 -
C:\Windows\SysWOW64\sc.exe"C:\Windows\System32\sc.exe" create kvfihnwa binPath= "C:\Windows\SysWOW64\kvfihnwa\syqfkdu.exe /d\"C:\Users\Admin\AppData\Local\Temp\vbojcjwr.exe\"" type= own start= auto DisplayName= "wifi support"2⤵
- Launches sc.exe
- System Location Discovery: System Language Discovery
PID:4304 -
C:\Windows\SysWOW64\sc.exe"C:\Windows\System32\sc.exe" description kvfihnwa "wifi internet conection"2⤵
- Launches sc.exe
- System Location Discovery: System Language Discovery
PID:736 -
C:\Windows\SysWOW64\sc.exe"C:\Windows\System32\sc.exe" start kvfihnwa2⤵
- Launches sc.exe
- System Location Discovery: System Language Discovery
PID:2820 -
C:\Windows\SysWOW64\netsh.exe"C:\Windows\System32\netsh.exe" advfirewall firewall add rule name="Host-process for services of Windows" dir=in action=allow program="C:\Windows\SysWOW64\svchost.exe" enable=yes>nul2⤵
- Modifies Windows Firewall
- Event Triggered Execution: Netsh Helper DLL
- System Location Discovery: System Language Discovery
PID:2568 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4004 -s 13082⤵
- Program crash
PID:1428
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C:\Windows\SysWOW64\kvfihnwa\syqfkdu.exeC:\Windows\SysWOW64\kvfihnwa\syqfkdu.exe /d"C:\Users\Admin\AppData\Local\Temp\vbojcjwr.exe"1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4880 -
C:\Windows\SysWOW64\svchost.exesvchost.exe2⤵
- Sets service image path in registry
- Deletes itself
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
PID:4440 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4880 -s 5162⤵
- Program crash
PID:680
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 4004 -ip 40041⤵PID:1760
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 4880 -ip 48801⤵PID:4700
Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
2Windows Service
2Event Triggered Execution
1Netsh Helper DLL
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
2Windows Service
2Event Triggered Execution
1Netsh Helper DLL
1Defense Evasion
Impair Defenses
1Disable or Modify System Firewall
1Modify Registry
1Replay Monitor
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Downloads
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Filesize
10.1MB
MD594711e204022fa34c4c57ae8079682c0
SHA1fe18f18b725ec9fb4f8e7cd747cfe5e2f2343ae1
SHA256693e327601fe6c76e8ded1021f09f651ac96eeb9d966f477da8f25a995cf4fbe
SHA5125e133a021fe6e6c40f6e1c9e05fc3d350ede0525f51f61c2efbe6d89a8423a903c647399fad988cca8e281c2d3b54d77ba53d5378ccb374dcd41b8f391891f4a