Analysis
- max time kernel
37s - max time network
30s - platform
windows10-2004_x64 - resource
win10v2004-20240226-en - resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system - submitted
02/03/2024, 17:19
Behavioral task
behavioral1
Sample
Build.exe
Resource
win7-20240221-en
22 signatures
150 seconds
Behavioral task
behavioral2
Sample
Build.exe
Resource
win10v2004-20240226-en
19 signatures
150 seconds
General
- Target Build.exe
- Size 11.9MB
- Sample240302-vvtvmsfc9v
- SHA256 8eeda0849b8bffc5d26ee56f02162f2e75e4271c4257c309197f3645fac47c03
- MD5 2fbf75fbac01d42161fdeb6adbd0d979
- SHA1 3ef5530a433923276191eec8d98aa462194aa829
- SHA512 1c208f3a5202c578e6f70474566f0929954b5678215ad962f84a7febee1b9c7a0a1cc3040763192a3ed9ebdf395bd9aa113ee313bf6f951973a717fec423472d
- SSDEEP 196608:AFH/xtSYJodEawY/7HPjloM1LiUIX099RYU9ptAzvZaZoM2S5HQoFKArPWug0Vg:AFfxtjJ/an7HPZ12TE99R3zmhbShKArI
- MD5 SHA1 SHA512 SSDEEP
Score
9/10
Malware Config
Signatures
- Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
description ioc Process Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ Build.exe - Creates new service(s) 1 TTPs
- Drops file in Drivers directory 1 IoCs
description ioc Process File created C:\Windows\system32\drivers\etc\hosts Setup.exe - Stops running service(s) 3 TTPs
- Checks BIOS information in registry 2 TTPs 2 IoCs
BIOS information is often read in order to detect sandboxing environments.
description ioc Process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion Build.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion Build.exe - Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-557049126-2506969350-2798870634-1000\Control Panel\International\Geo\Nation Build.exe - Executes dropped EXE 3 IoCs
pid Process 2272 Setup.exe 4024 Updater.exe 1452 kvkinxkledtt.exe -
resource yara_rule behavioral2/memory/1724-0-0x0000000000400000-0x000000000141D000-memory.dmp themida behavioral2/memory/1724-83-0x0000000000400000-0x000000000141D000-memory.dmp themida -
description ioc Process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA Build.exe - Looks up external IP address via web service 3 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
flow ioc 27 icanhazip.com 29 ipinfo.io 30 ipinfo.io - Drops file in System32 directory 1 IoCs
description ioc Process File opened for modification C:\Windows\system32\MRT.exe Setup.exe - Suspicious use of NtSetInformationThreadHideFromDebugger 6 IoCs
pid Process 1724 Build.exe 2272 Setup.exe 2272 Setup.exe 2272 Setup.exe 1452 kvkinxkledtt.exe 1452 kvkinxkledtt.exe - Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 2272 set thread context of 1624 2272 Setup.exe 117 - Launches sc.exe 9 IoCs
Sc.exe is a Windows utlilty to control services on the system.
pid Process 4600 sc.exe 2848 sc.exe 4052 sc.exe 1648 sc.exe 1628 sc.exe 4444 sc.exe 4352 sc.exe 2920 sc.exe 980 sc.exe - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Modifies registry class 1 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\ Build.exe - Suspicious behavior: EnumeratesProcesses 25 IoCs
pid Process 1724 Build.exe 1724 Build.exe 2272 Setup.exe 2120 powershell.exe 2120 powershell.exe 2272 Setup.exe 2272 Setup.exe 2272 Setup.exe 2272 Setup.exe 2272 Setup.exe 2272 Setup.exe 2272 Setup.exe 2272 Setup.exe 2272 Setup.exe 2272 Setup.exe 2272 Setup.exe 2272 Setup.exe 1624 dialer.exe 1624 dialer.exe 2272 Setup.exe 2272 Setup.exe 2272 Setup.exe 1624 dialer.exe 1624 dialer.exe 1452 kvkinxkledtt.exe - Suspicious use of AdjustPrivilegeToken 12 IoCs
description pid Process Token: SeDebugPrivilege 4024 Updater.exe Token: SeDebugPrivilege 2120 powershell.exe Token: SeDebugPrivilege 2272 Setup.exe Token: SeShutdownPrivilege 5116 powercfg.exe Token: SeCreatePagefilePrivilege 5116 powercfg.exe Token: SeShutdownPrivilege 3280 powercfg.exe Token: SeCreatePagefilePrivilege 3280 powercfg.exe Token: SeShutdownPrivilege 1284 powercfg.exe Token: SeCreatePagefilePrivilege 1284 powercfg.exe Token: SeShutdownPrivilege 2556 powercfg.exe Token: SeCreatePagefilePrivilege 2556 powercfg.exe Token: SeDebugPrivilege 1624 dialer.exe - Suspicious use of WriteProcessMemory 33 IoCs
description pid Process procid_target PID 1724 wrote to memory of 2272 1724 Build.exe 92 PID 1724 wrote to memory of 2272 1724 Build.exe 92 PID 1724 wrote to memory of 4024 1724 Build.exe 93 PID 1724 wrote to memory of 4024 1724 Build.exe 93 PID 1724 wrote to memory of 4024 1724 Build.exe 93 PID 2032 wrote to memory of 1104 2032 cmd.exe 102 PID 2032 wrote to memory of 1104 2032 cmd.exe 102 PID 2272 wrote to memory of 1624 2272 Setup.exe 117 PID 2272 wrote to memory of 1624 2272 Setup.exe 117 PID 2272 wrote to memory of 1624 2272 Setup.exe 117 PID 2272 wrote to memory of 1624 2272 Setup.exe 117 PID 2272 wrote to memory of 1624 2272 Setup.exe 117 PID 2272 wrote to memory of 1624 2272 Setup.exe 117 PID 2272 wrote to memory of 1624 2272 Setup.exe 117 PID 1624 wrote to memory of 612 1624 dialer.exe 5 PID 1624 wrote to memory of 660 1624 dialer.exe 7 PID 660 wrote to memory of 2640 660 lsass.exe 48 PID 1624 wrote to memory of 952 1624 dialer.exe 12 PID 660 wrote to memory of 2640 660 lsass.exe 48 PID 1624 wrote to memory of 1020 1624 dialer.exe 13 PID 1624 wrote to memory of 508 1624 dialer.exe 14 PID 660 wrote to memory of 2640 660 lsass.exe 48 PID 1624 wrote to memory of 432 1624 dialer.exe 15 PID 660 wrote to memory of 2640 660 lsass.exe 48 PID 1624 wrote to memory of 608 1624 dialer.exe 16 PID 660 wrote to memory of 2640 660 lsass.exe 48 PID 660 wrote to memory of 2640 660 lsass.exe 48 PID 1624 wrote to memory of 1036 1624 dialer.exe 17 PID 660 wrote to memory of 2640 660 lsass.exe 48 PID 1624 wrote to memory of 1060 1624 dialer.exe 18 PID 1624 wrote to memory of 1168 1624 dialer.exe 20 PID 1624 wrote to memory of 1232 1624 dialer.exe 21 PID 660 wrote to memory of 2640 660 lsass.exe 48
Processes
-
C:\Windows\system32\winlogon.exewinlogon.exe1⤵PID:612
-
C:\Windows\system32\dwm.exe"dwm.exe"2⤵PID:1020
-
-
C:\Windows\system32\lsass.exeC:\Windows\system32\lsass.exe1⤵
- Suspicious use of WriteProcessMemory
PID:660
-
C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k DcomLaunch -p -s LSM1⤵PID:952
-
C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k netsvcs -p -s gpsvc1⤵PID:508
-
C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k netsvcs -p -s DsmSvc1⤵PID:432
-
C:\Windows\System32\svchost.exeC:\Windows\System32\svchost.exe -k LocalServiceNetworkRestricted -p -s lmhosts1⤵PID:608
-
C:\Windows\System32\svchost.exeC:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted -p -s NcbService1⤵PID:1036
-
C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k LocalServiceNetworkRestricted -p -s TimeBrokerSvc1⤵PID:1060
-
C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k netsvcs -p -s Schedule1⤵PID:1168
-
C:\Windows\System32\svchost.exeC:\Windows\System32\svchost.exe -k LocalServiceNetworkRestricted -p -s EventLog1⤵PID:1232
-
C:\Windows\sysmon.exeC:\Windows\sysmon.exe1⤵PID:2640
-
C:\Users\Admin\AppData\Local\Temp\Build.exe"C:\Users\Admin\AppData\Local\Temp\Build.exe"1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Checks computer location settings
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1724 -
C:\Users\Admin\AppData\Local\Temp\Setup.exe"C:\Users\Admin\AppData\Local\Temp\Setup.exe"2⤵
- Drops file in Drivers directory
- Executes dropped EXE
- Drops file in System32 directory
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2272 -
C:\Windows\system32\WindowsPowerShell\v1.0\powershell.exeC:\Windows\system32\WindowsPowerShell\v1.0\powershell.exe Add-MpPreference -ExclusionPath @($env:UserProfile, $env:ProgramData) -ExclusionExtension '.exe' -Force3⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2120
-
-
C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c wusa /uninstall /kb:890830 /quiet /norestart3⤵
- Suspicious use of WriteProcessMemory
PID:2032 -
C:\Windows\system32\wusa.exewusa /uninstall /kb:890830 /quiet /norestart4⤵PID:1104
-
-
-
C:\Windows\system32\sc.exeC:\Windows\system32\sc.exe stop UsoSvc3⤵
- Launches sc.exe
PID:4444
-
-
C:\Windows\system32\sc.exeC:\Windows\system32\sc.exe stop WaaSMedicSvc3⤵
- Launches sc.exe
PID:4352
-
-
C:\Windows\system32\sc.exeC:\Windows\system32\sc.exe stop wuauserv3⤵
- Launches sc.exe
PID:2920
-
-
C:\Windows\system32\sc.exeC:\Windows\system32\sc.exe stop bits3⤵
- Launches sc.exe
PID:980
-
-
C:\Windows\system32\sc.exeC:\Windows\system32\sc.exe stop dosvc3⤵
- Launches sc.exe
PID:4600
-
-
C:\Windows\system32\powercfg.exeC:\Windows\system32\powercfg.exe /x -hibernate-timeout-ac 03⤵
- Suspicious use of AdjustPrivilegeToken
PID:5116
-
-
C:\Windows\system32\powercfg.exeC:\Windows\system32\powercfg.exe /x -hibernate-timeout-dc 03⤵
- Suspicious use of AdjustPrivilegeToken
PID:1284
-
-
C:\Windows\system32\powercfg.exeC:\Windows\system32\powercfg.exe /x -standby-timeout-ac 03⤵
- Suspicious use of AdjustPrivilegeToken
PID:3280
-
-
C:\Windows\system32\powercfg.exeC:\Windows\system32\powercfg.exe /x -standby-timeout-dc 03⤵
- Suspicious use of AdjustPrivilegeToken
PID:2556
-
-
C:\Windows\system32\dialer.exeC:\Windows\system32\dialer.exe3⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1624
-
-
C:\Windows\system32\sc.exeC:\Windows\system32\sc.exe delete "WindowsComplite"3⤵
- Launches sc.exe
PID:2848
-
-
C:\Windows\system32\sc.exeC:\Windows\system32\sc.exe create "WindowsComplite" binpath= "C:\ProgramData\hmtufamemhvn\kvkinxkledtt.exe" start= "auto"3⤵
- Launches sc.exe
PID:4052
-
-
C:\Windows\system32\sc.exeC:\Windows\system32\sc.exe stop eventlog3⤵
- Launches sc.exe
PID:1628
-
-
C:\Windows\system32\sc.exeC:\Windows\system32\sc.exe start "WindowsComplite"3⤵
- Launches sc.exe
PID:1648
-
-
-
C:\Users\Admin\AppData\Local\Temp\Updater.exe"C:\Users\Admin\AppData\Local\Temp\Updater.exe"2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4024
-
-
C:\ProgramData\hmtufamemhvn\kvkinxkledtt.exeC:\ProgramData\hmtufamemhvn\kvkinxkledtt.exe1⤵
- Executes dropped EXE
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
PID:1452 -
C:\Windows\system32\WindowsPowerShell\v1.0\powershell.exeC:\Windows\system32\WindowsPowerShell\v1.0\powershell.exe Add-MpPreference -ExclusionPath @($env:UserProfile, $env:ProgramData) -ExclusionExtension '.exe' -Force2⤵PID:5072
-
-
C:\Windows\system32\sihost.exesihost.exe1⤵PID:3560
-
C:\Windows\system32\sihost.exesihost.exe1⤵PID:2820
-
C:\Windows\system32\sihost.exesihost.exe1⤵PID:3924
-
C:\Windows\system32\sihost.exesihost.exe1⤵PID:4624
-
C:\Windows\system32\sihost.exesihost.exe1⤵PID:3500
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
- Path C:\ProgramData\hmtufamemhvn\kvkinxkledtt.exe
- Size 768KB
- SHA256 e2ab6738b98397ae73821b40010df0147de8f07fa1379348ab0172c2dada68a4
- MD5 f3a2ed6a1317db87ebd6b7da445d162b
- SHA1 2e2ae84d4a1f67122ac72ca568036b8f7a13b7d5
- SHA512 1eb0ca93f70ce603e439e38a68f15312cb2ccb74391043f0e94474598dfab58e63fc3554534fb8c0a52712f60fa2d3771a7a885cdb78d7e1f54602d2bff525ed
- SSDEEP 12288:SuzIs2WYSuLqLP/bjQK41yZqFDtUL927oH1I2FeL5N0BWz3j35EBG:Su14DqTbF44ZqB77geL5Wmjd
- MD5 SHA1 SHA512 SSDEEP
- Path C:\ProgramData\hmtufamemhvn\kvkinxkledtt.exe
- Size 832KB
- SHA256 8cb013b239bee9f9ed998d4dac74d05b49e998d1f0d40559d2f9ae291b8e0a76
- MD5 3787d2dc7b86ea16814f9749f1a5aa76
- SHA1 efa3d5e403f8712724746d898f545d1f647e39b2
- SHA512 cdaad9f3b4750b228c7e03cfaf3456553be5526a51d75c067acede21bc71955dd8f655a93b0d29ef16e77e3a5abca44dbf3cb8ab067776023f40cad0433b6ab6
- SSDEEP 12288:SuzIs2WYSuLqLP/bjQK41yZqFDtUL927oH1I2FeL5N0BWz3j35EBe9BCD:Su14DqTbF44ZqB77geL5WmjR9Bi
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\Temp\Setup.exe
- Size 2.0MB
- SHA256 723ba9213bd78093c17d3e42599cc22c7cfc95a6953518bcadcbaad891289afc
- MD5 982c8f3e77911e9e9734f16d70240b52
- SHA1 b4d3f30e772d31b451221356c9cc80336d5da321
- SHA512 9b4efe012d4ca136667d4348440dfa762a20bdd3009c52578c3e7dc6fb291375643b01c9271b6739d52d7d07eb9272298f7ec8ff756eaae8f1e58e6446c86004
- SSDEEP 24576:Su14DqTbF44ZqB77geL5WmjR9BHxb9T2LtEGwxXKMqN/yQ3bvAN0zIecv0Dn2odA:SuyDWzSZDRR2LaGJoQ3jAQIecy28U/j
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\Temp\Setup.exe
- Size 1.1MB
- SHA256 a93a353ca8473b9fc9b194223110b022dc7ca4e0dfab5bec79971a0ee1df5c03
- MD5 8ef571f41a9131022796aaa0cb60a64c
- SHA1 490b3580a49b1c18cb50d3efc6033a6b8212da58
- SHA512 8fa4752e04a348f5cfa55e1a4795388294bc5a2f305fae9dbedca6a8568c70b5722e1cd959a7e8a8fb502e0094eaee189eedc01a26afebd0e24900f51c24bcdf
- SSDEEP 24576:Su14DqTbF44ZqB77geL5WmjR9BHxb9T2LtEGwxXKM3:SuyDWzSZDRR2LaGe
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\Temp\Setup.exe
- Size 8.5MB
- SHA256 e49aec48358a65ac8d93539528d239cf5b9346e83efe7e67a8fa434283fa2d25
- MD5 c97018b83acc1099cdd171647a50ec1f
- SHA1 1acdb17298ee25d9042c79346cc53f72767e6607
- SHA512 02c64c328a2fff1292c82ce270fcd173af85edf6db699b0d6a757c0ac233966d521f37d819c2a0a5f4ceeb44b9035914012548c28066fcfcdfd2a3942449f07b
- SSDEEP 196608:S/bETeQIhTyunsvebUhnuFQB2B2QwdufGWMdq:GQ+hTyukebmXC2Qw8+q
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\Temp\Updater.exe
- Size 755KB
- SHA256 556150647d272430bdf82d860796a167f1737a53e0df19def62220f32eef58ea
- MD5 3ca4a2253a3947eb98f196344561ea6b
- SHA1 faf971c2281596a001888972071566c62d9ccd37
- SHA512 6e776373a8e4e945caedb7a991998119c3cfa8457601df0c9b635705e3ca2c2e16330526a53f189bd44949f7aded79aa8dbf07f2b062f30427b2aa97f343d9fa
- SSDEEP 12288:m+FgZdfrXg+JwuKt/S/60pOGmcg8g5kjo5Bda7EGDtOqib/SA0pDK:mffw+Jwz/S/6S+8Zk5BkAOtlaapc
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\Temp\Updater.exe
- Size 984KB
- SHA256 2e5a498e9299a5a6d7ca9d36def6d2f546812a34db0fe91528ab586dd9d07a18
- MD5 d5ea67d392c23f20921d26cba0fdf284
- SHA1 572013524756c6323a198810cf63c32d90044f46
- SHA512 d5159344dd389c18f2d6ec9911a4a5a9b1240cefb88ab8bf8099f9ce3918915ccd39466ef750f3b3cafab2096e550e7fd07a8680780b7383f45c601603b49b7d
- SSDEEP 24576:mffw+Jwz/S/6S+8Zk5BkAOtlaapjMkKTo:mnw+W7SCS+8qch
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_h2uvcqmn.ivw.ps1
- Size 60B
- SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
- MD5 d17fe0a3f47be24a6453e9ef58c94641
- SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
- SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
- MD5 SHA1 SHA512