Analysis
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max time kernel
10s -
max time network
14s -
platform
windows10-2004_x64 -
resource
win10v2004-20220901-en -
resource tags
arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system -
submitted
22-10-2022 06:02
Static task
static1
Behavioral task
behavioral1
Sample
aca73acf92d5c709d17919f0d61f0db64bd50098fe2afe9e5834394dbaa611ae.exe
Resource
win7-20220901-en
Behavioral task
behavioral2
Sample
aca73acf92d5c709d17919f0d61f0db64bd50098fe2afe9e5834394dbaa611ae.exe
Resource
win10v2004-20220901-en
General
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Target
aca73acf92d5c709d17919f0d61f0db64bd50098fe2afe9e5834394dbaa611ae.exe
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Size
428KB
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MD5
85b8d2fa326926f049d7d3b7a083e08e
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SHA1
9884d2f5bce7405627495470893765a70f858242
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SHA256
aca73acf92d5c709d17919f0d61f0db64bd50098fe2afe9e5834394dbaa611ae
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SHA512
89d5b627a708974439e31079d122395c7e9ee06b345e2efa81e38a2821ceded0a1e95f919dcf44dce1dc509eeabae77264b8fadbe151408f63408c8b199090d7
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SSDEEP
6144:1Tz+ZXamW2jpJuSTZBDdDgPME1m4SKlwIMvfAoXbftChXW3AxfulDGgB:Nz+YmJJuGZYbzz2IgfFblCJxfS6
Malware Config
Extracted
C:\$Recycle.Bin\S-1-5-21-929662420-1054238289-2961194603-1000\_RECoVERY_+fkhoy.txt
teslacrypt
http://pts764gt354fder34fsqw45gdfsavadfgsfg.kraskula.com/D45D6F9C614BEA2
http://sondr5344ygfweyjbfkw4fhsefv.heliofetch.at/D45D6F9C614BEA2
http://uiredn4njfsa4234bafb32ygjdawfvs.frascuft.com/D45D6F9C614BEA2
http://xlowfznrg4wf7dli.ONION/D45D6F9C614BEA2
Signatures
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TeslaCrypt, AlphaCrypt
Ransomware based on CryptoLocker. Shut down by the developers in 2016.
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Deletes shadow copies 2 TTPs
Ransomware often targets backup files to inhibit system recovery.
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Executes dropped EXE 1 IoCs
Processes:
yjfopqurvite.exepid process 3424 yjfopqurvite.exe -
Checks computer location settings 2 TTPs 2 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
aca73acf92d5c709d17919f0d61f0db64bd50098fe2afe9e5834394dbaa611ae.exeyjfopqurvite.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation aca73acf92d5c709d17919f0d61f0db64bd50098fe2afe9e5834394dbaa611ae.exe Key value queried \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation yjfopqurvite.exe -
Adds Run key to start application 2 TTPs 2 IoCs
Processes:
yjfopqurvite.exedescription ioc process Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Windows\CurrentVersion\Run yjfopqurvite.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\qbhroxidyyxt = "C:\\Windows\\system32\\cmd.exe /c start \"\" \"C:\\Windows\\yjfopqurvite.exe\"" yjfopqurvite.exe -
Drops file in Program Files directory 64 IoCs
Processes:
yjfopqurvite.exedescription ioc process File opened for modification C:\Program Files\Common Files\microsoft shared\ink\tr-TR\_RECoVERY_+fkhoy.html yjfopqurvite.exe File opened for modification C:\Program Files\7-Zip\Lang\bn.txt yjfopqurvite.exe File opened for modification C:\Program Files\7-Zip\Lang\th.txt yjfopqurvite.exe File opened for modification C:\Program Files\Common Files\microsoft shared\ink\fsdefinitions\oskmenu\_RECoVERY_+fkhoy.png yjfopqurvite.exe File opened for modification C:\Program Files\Common Files\microsoft shared\ink\sv-SE\_RECoVERY_+fkhoy.png yjfopqurvite.exe File opened for modification C:\Program Files\7-Zip\Lang\ast.txt yjfopqurvite.exe File opened for modification C:\Program Files\7-Zip\Lang\ps.txt yjfopqurvite.exe File opened for modification C:\Program Files\Common Files\microsoft shared\ink\fsdefinitions\insert\_RECoVERY_+fkhoy.png yjfopqurvite.exe File opened for modification C:\Program Files\Common Files\microsoft shared\ink\zh-TW\_RECoVERY_+fkhoy.png yjfopqurvite.exe File opened for modification C:\Program Files\Common Files\microsoft shared\ink\zh-TW\_RECoVERY_+fkhoy.txt yjfopqurvite.exe File opened for modification C:\Program Files\7-Zip\Lang\kab.txt yjfopqurvite.exe File opened for modification C:\Program Files\7-Zip\Lang\pa-in.txt yjfopqurvite.exe File opened for modification C:\Program Files\Common Files\microsoft shared\ink\fsdefinitions\oskmenu\_RECoVERY_+fkhoy.html yjfopqurvite.exe File opened for modification C:\Program Files\Common Files\microsoft shared\ink\uk-UA\_RECoVERY_+fkhoy.txt yjfopqurvite.exe File opened for modification C:\Program Files\7-Zip\Lang\ca.txt yjfopqurvite.exe File opened for modification C:\Program Files\7-Zip\Lang\lij.txt yjfopqurvite.exe File opened for modification C:\Program Files\7-Zip\readme.txt yjfopqurvite.exe File opened for modification C:\Program Files\Common Files\microsoft shared\ink\fi-FI\_RECoVERY_+fkhoy.png yjfopqurvite.exe File opened for modification C:\Program Files\Common Files\microsoft shared\ink\fr-CA\_RECoVERY_+fkhoy.html yjfopqurvite.exe File opened for modification C:\Program Files\Common Files\microsoft shared\ink\hr-HR\_RECoVERY_+fkhoy.png yjfopqurvite.exe File opened for modification C:\Program Files\Common Files\microsoft shared\ink\pt-PT\_RECoVERY_+fkhoy.png yjfopqurvite.exe File opened for modification C:\Program Files\7-Zip\Lang\is.txt yjfopqurvite.exe File opened for modification C:\Program Files\Common Files\microsoft shared\ink\da-DK\_RECoVERY_+fkhoy.png yjfopqurvite.exe File opened for modification C:\Program Files\Common Files\microsoft shared\ink\et-EE\_RECoVERY_+fkhoy.png yjfopqurvite.exe File opened for modification C:\Program Files\Common Files\microsoft shared\ink\el-GR\_RECoVERY_+fkhoy.txt yjfopqurvite.exe File opened for modification C:\Program Files\Common Files\microsoft shared\ink\fsdefinitions\oskmenu\_RECoVERY_+fkhoy.txt yjfopqurvite.exe File opened for modification C:\Program Files\7-Zip\Lang\eo.txt yjfopqurvite.exe File opened for modification C:\Program Files\7-Zip\Lang\ms.txt yjfopqurvite.exe File opened for modification C:\Program Files\7-Zip\Lang\sr-spc.txt yjfopqurvite.exe File opened for modification C:\Program Files\Common Files\microsoft shared\ink\_RECoVERY_+fkhoy.txt yjfopqurvite.exe File opened for modification C:\Program Files\7-Zip\Lang\zh-tw.txt yjfopqurvite.exe File opened for modification C:\Program Files\Common Files\microsoft shared\ink\he-IL\_RECoVERY_+fkhoy.html yjfopqurvite.exe File opened for modification C:\Program Files\Common Files\microsoft shared\ink\HWRCustomization\_RECoVERY_+fkhoy.html yjfopqurvite.exe File opened for modification C:\Program Files\7-Zip\Lang\lv.txt yjfopqurvite.exe File opened for modification C:\Program Files\Common Files\microsoft shared\ink\fsdefinitions\osknav\_RECoVERY_+fkhoy.png yjfopqurvite.exe File opened for modification C:\Program Files\Common Files\microsoft shared\ink\es-ES\_RECoVERY_+fkhoy.html yjfopqurvite.exe File opened for modification C:\Program Files\Common Files\microsoft shared\ink\lt-LT\_RECoVERY_+fkhoy.png yjfopqurvite.exe File opened for modification C:\Program Files\Common Files\microsoft shared\ink\pt-BR\_RECoVERY_+fkhoy.png yjfopqurvite.exe File opened for modification C:\Program Files\Common Files\microsoft shared\ink\th-TH\_RECoVERY_+fkhoy.txt yjfopqurvite.exe File opened for modification C:\Program Files\Common Files\microsoft shared\ink\uk-UA\_RECoVERY_+fkhoy.png yjfopqurvite.exe File opened for modification C:\Program Files\7-Zip\Lang\bg.txt yjfopqurvite.exe File opened for modification C:\Program Files\Common Files\microsoft shared\ink\ar-SA\_RECoVERY_+fkhoy.txt yjfopqurvite.exe File opened for modification C:\Program Files\Common Files\microsoft shared\ink\en-GB\_RECoVERY_+fkhoy.txt yjfopqurvite.exe File opened for modification C:\Program Files\Common Files\microsoft shared\ink\pl-PL\_RECoVERY_+fkhoy.html yjfopqurvite.exe File opened for modification C:\Program Files\Common Files\microsoft shared\ink\pt-BR\_RECoVERY_+fkhoy.html yjfopqurvite.exe File opened for modification C:\Program Files\7-Zip\Lang\hr.txt yjfopqurvite.exe File opened for modification C:\Program Files\7-Zip\Lang\zh-cn.txt yjfopqurvite.exe File opened for modification C:\Program Files\Common Files\microsoft shared\ink\da-DK\_RECoVERY_+fkhoy.txt yjfopqurvite.exe File opened for modification C:\Program Files\7-Zip\Lang\_RECoVERY_+fkhoy.txt yjfopqurvite.exe File opened for modification C:\Program Files\Common Files\microsoft shared\ink\fsdefinitions\auxpad\_RECoVERY_+fkhoy.png yjfopqurvite.exe File opened for modification C:\Program Files\Common Files\microsoft shared\ink\hu-HU\_RECoVERY_+fkhoy.png yjfopqurvite.exe File opened for modification C:\Program Files\Common Files\microsoft shared\ink\nl-NL\_RECoVERY_+fkhoy.png yjfopqurvite.exe File opened for modification C:\Program Files\Common Files\microsoft shared\ink\sk-SK\_RECoVERY_+fkhoy.txt yjfopqurvite.exe File opened for modification C:\Program Files\7-Zip\Lang\af.txt yjfopqurvite.exe File opened for modification C:\Program Files\7-Zip\Lang\cy.txt yjfopqurvite.exe File opened for modification C:\Program Files\7-Zip\Lang\hi.txt yjfopqurvite.exe File opened for modification C:\Program Files\Common Files\DESIGNER\_RECoVERY_+fkhoy.png yjfopqurvite.exe File opened for modification C:\Program Files\Common Files\microsoft shared\ink\fsdefinitions\symbols\_RECoVERY_+fkhoy.html yjfopqurvite.exe File opened for modification C:\Program Files\Common Files\microsoft shared\ink\ru-RU\_RECoVERY_+fkhoy.html yjfopqurvite.exe File opened for modification C:\Program Files\Common Files\microsoft shared\ink\_RECoVERY_+fkhoy.png yjfopqurvite.exe File opened for modification C:\Program Files\7-Zip\Lang\fur.txt yjfopqurvite.exe File opened for modification C:\Program Files\7-Zip\Lang\nl.txt yjfopqurvite.exe File opened for modification C:\Program Files\7-Zip\Lang\ro.txt yjfopqurvite.exe File opened for modification C:\Program Files\Common Files\microsoft shared\ink\fsdefinitions\oskclearui\_RECoVERY_+fkhoy.png yjfopqurvite.exe -
Drops file in Windows directory 2 IoCs
Processes:
aca73acf92d5c709d17919f0d61f0db64bd50098fe2afe9e5834394dbaa611ae.exedescription ioc process File created C:\Windows\yjfopqurvite.exe aca73acf92d5c709d17919f0d61f0db64bd50098fe2afe9e5834394dbaa611ae.exe File opened for modification C:\Windows\yjfopqurvite.exe aca73acf92d5c709d17919f0d61f0db64bd50098fe2afe9e5834394dbaa611ae.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Suspicious behavior: EnumeratesProcesses 46 IoCs
Processes:
yjfopqurvite.exepid process 3424 yjfopqurvite.exe 3424 yjfopqurvite.exe 3424 yjfopqurvite.exe 3424 yjfopqurvite.exe 3424 yjfopqurvite.exe 3424 yjfopqurvite.exe 3424 yjfopqurvite.exe 3424 yjfopqurvite.exe 3424 yjfopqurvite.exe 3424 yjfopqurvite.exe 3424 yjfopqurvite.exe 3424 yjfopqurvite.exe 3424 yjfopqurvite.exe 3424 yjfopqurvite.exe 3424 yjfopqurvite.exe 3424 yjfopqurvite.exe 3424 yjfopqurvite.exe 3424 yjfopqurvite.exe 3424 yjfopqurvite.exe 3424 yjfopqurvite.exe 3424 yjfopqurvite.exe 3424 yjfopqurvite.exe 3424 yjfopqurvite.exe 3424 yjfopqurvite.exe 3424 yjfopqurvite.exe 3424 yjfopqurvite.exe 3424 yjfopqurvite.exe 3424 yjfopqurvite.exe 3424 yjfopqurvite.exe 3424 yjfopqurvite.exe 3424 yjfopqurvite.exe 3424 yjfopqurvite.exe 3424 yjfopqurvite.exe 3424 yjfopqurvite.exe 3424 yjfopqurvite.exe 3424 yjfopqurvite.exe 3424 yjfopqurvite.exe 3424 yjfopqurvite.exe 3424 yjfopqurvite.exe 3424 yjfopqurvite.exe 3424 yjfopqurvite.exe 3424 yjfopqurvite.exe 3424 yjfopqurvite.exe 3424 yjfopqurvite.exe 3424 yjfopqurvite.exe 3424 yjfopqurvite.exe -
Suspicious use of AdjustPrivilegeToken 47 IoCs
Processes:
aca73acf92d5c709d17919f0d61f0db64bd50098fe2afe9e5834394dbaa611ae.exeyjfopqurvite.exeWMIC.exevssvc.exedescription pid process Token: SeDebugPrivilege 516 aca73acf92d5c709d17919f0d61f0db64bd50098fe2afe9e5834394dbaa611ae.exe Token: SeDebugPrivilege 3424 yjfopqurvite.exe Token: SeIncreaseQuotaPrivilege 2520 WMIC.exe Token: SeSecurityPrivilege 2520 WMIC.exe Token: SeTakeOwnershipPrivilege 2520 WMIC.exe Token: SeLoadDriverPrivilege 2520 WMIC.exe Token: SeSystemProfilePrivilege 2520 WMIC.exe Token: SeSystemtimePrivilege 2520 WMIC.exe Token: SeProfSingleProcessPrivilege 2520 WMIC.exe Token: SeIncBasePriorityPrivilege 2520 WMIC.exe Token: SeCreatePagefilePrivilege 2520 WMIC.exe Token: SeBackupPrivilege 2520 WMIC.exe Token: SeRestorePrivilege 2520 WMIC.exe Token: SeShutdownPrivilege 2520 WMIC.exe Token: SeDebugPrivilege 2520 WMIC.exe Token: SeSystemEnvironmentPrivilege 2520 WMIC.exe Token: SeRemoteShutdownPrivilege 2520 WMIC.exe Token: SeUndockPrivilege 2520 WMIC.exe Token: SeManageVolumePrivilege 2520 WMIC.exe Token: 33 2520 WMIC.exe Token: 34 2520 WMIC.exe Token: 35 2520 WMIC.exe Token: 36 2520 WMIC.exe Token: SeIncreaseQuotaPrivilege 2520 WMIC.exe Token: SeSecurityPrivilege 2520 WMIC.exe Token: SeTakeOwnershipPrivilege 2520 WMIC.exe Token: SeLoadDriverPrivilege 2520 WMIC.exe Token: SeSystemProfilePrivilege 2520 WMIC.exe Token: SeSystemtimePrivilege 2520 WMIC.exe Token: SeProfSingleProcessPrivilege 2520 WMIC.exe Token: SeIncBasePriorityPrivilege 2520 WMIC.exe Token: SeCreatePagefilePrivilege 2520 WMIC.exe Token: SeBackupPrivilege 2520 WMIC.exe Token: SeRestorePrivilege 2520 WMIC.exe Token: SeShutdownPrivilege 2520 WMIC.exe Token: SeDebugPrivilege 2520 WMIC.exe Token: SeSystemEnvironmentPrivilege 2520 WMIC.exe Token: SeRemoteShutdownPrivilege 2520 WMIC.exe Token: SeUndockPrivilege 2520 WMIC.exe Token: SeManageVolumePrivilege 2520 WMIC.exe Token: 33 2520 WMIC.exe Token: 34 2520 WMIC.exe Token: 35 2520 WMIC.exe Token: 36 2520 WMIC.exe Token: SeBackupPrivilege 4712 vssvc.exe Token: SeRestorePrivilege 4712 vssvc.exe Token: SeAuditPrivilege 4712 vssvc.exe -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
aca73acf92d5c709d17919f0d61f0db64bd50098fe2afe9e5834394dbaa611ae.exeyjfopqurvite.exedescription pid process target process PID 516 wrote to memory of 3424 516 aca73acf92d5c709d17919f0d61f0db64bd50098fe2afe9e5834394dbaa611ae.exe yjfopqurvite.exe PID 516 wrote to memory of 3424 516 aca73acf92d5c709d17919f0d61f0db64bd50098fe2afe9e5834394dbaa611ae.exe yjfopqurvite.exe PID 516 wrote to memory of 3424 516 aca73acf92d5c709d17919f0d61f0db64bd50098fe2afe9e5834394dbaa611ae.exe yjfopqurvite.exe PID 516 wrote to memory of 4260 516 aca73acf92d5c709d17919f0d61f0db64bd50098fe2afe9e5834394dbaa611ae.exe cmd.exe PID 516 wrote to memory of 4260 516 aca73acf92d5c709d17919f0d61f0db64bd50098fe2afe9e5834394dbaa611ae.exe cmd.exe PID 516 wrote to memory of 4260 516 aca73acf92d5c709d17919f0d61f0db64bd50098fe2afe9e5834394dbaa611ae.exe cmd.exe PID 3424 wrote to memory of 2520 3424 yjfopqurvite.exe WMIC.exe PID 3424 wrote to memory of 2520 3424 yjfopqurvite.exe WMIC.exe -
System policy modification 1 TTPs 2 IoCs
Processes:
yjfopqurvite.exedescription ioc process Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System yjfopqurvite.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLinkedConnections = "1" yjfopqurvite.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\aca73acf92d5c709d17919f0d61f0db64bd50098fe2afe9e5834394dbaa611ae.exe"C:\Users\Admin\AppData\Local\Temp\aca73acf92d5c709d17919f0d61f0db64bd50098fe2afe9e5834394dbaa611ae.exe"1⤵
- Checks computer location settings
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:516 -
C:\Windows\yjfopqurvite.exeC:\Windows\yjfopqurvite.exe2⤵
- Executes dropped EXE
- Checks computer location settings
- Adds Run key to start application
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- System policy modification
PID:3424 -
C:\Windows\System32\wbem\WMIC.exe"C:\Windows\System32\wbem\WMIC.exe" shadowcopy delete /nointeractive3⤵
- Suspicious use of AdjustPrivilegeToken
PID:2520
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\system32\cmd.exe" /c DEL C:\Users\Admin\AppData\Local\Temp\ACA73A~1.EXE2⤵PID:4260
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:4712
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
428KB
MD585b8d2fa326926f049d7d3b7a083e08e
SHA19884d2f5bce7405627495470893765a70f858242
SHA256aca73acf92d5c709d17919f0d61f0db64bd50098fe2afe9e5834394dbaa611ae
SHA51289d5b627a708974439e31079d122395c7e9ee06b345e2efa81e38a2821ceded0a1e95f919dcf44dce1dc509eeabae77264b8fadbe151408f63408c8b199090d7
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Filesize
428KB
MD585b8d2fa326926f049d7d3b7a083e08e
SHA19884d2f5bce7405627495470893765a70f858242
SHA256aca73acf92d5c709d17919f0d61f0db64bd50098fe2afe9e5834394dbaa611ae
SHA51289d5b627a708974439e31079d122395c7e9ee06b345e2efa81e38a2821ceded0a1e95f919dcf44dce1dc509eeabae77264b8fadbe151408f63408c8b199090d7