Analysis Overview
SHA256
fa0ab33b2858424a74e0b8adaa205f38ebfd769701e4d05a84737d09e2cc358f
Threat Level: Known bad
The file ad4b527e8240812756aa003af27b9e48 was found to be: Known bad.
Malicious Activity Summary
Oski
Uses the VBS compiler for execution
Checks computer location settings
Suspicious use of SetThreadContext
Unsigned PE
Enumerates physical storage devices
Program crash
Suspicious use of WriteProcessMemory
Creates scheduled task(s)
Suspicious use of AdjustPrivilegeToken
Suspicious behavior: EnumeratesProcesses
MITRE ATT&CK Matrix V13
Analysis: static1
Detonation Overview
Reported
2024-02-29 00:59
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-02-29 00:59
Reported
2024-02-29 01:02
Platform
win7-20240221-en
Max time kernel
119s
Max time network
120s
Command Line
Signatures
Oski
Uses the VBS compiler for execution
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 2112 set thread context of 2624 | N/A | C:\Users\Admin\AppData\Local\Temp\ad4b527e8240812756aa003af27b9e48.exe | C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe |
Enumerates physical storage devices
Program crash
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe |
Creates scheduled task(s)
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\schtasks.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\ad4b527e8240812756aa003af27b9e48.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\ad4b527e8240812756aa003af27b9e48.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\ad4b527e8240812756aa003af27b9e48.exe
"C:\Users\Admin\AppData\Local\Temp\ad4b527e8240812756aa003af27b9e48.exe"
C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\paGCyK" /XML "C:\Users\Admin\AppData\Local\Temp\tmpC3DB.tmp"
C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2624 -s 816
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | fredarlessonmark.com | udp |
Files
memory/2112-1-0x0000000074840000-0x0000000074F2E000-memory.dmp
memory/2112-0-0x0000000001100000-0x00000000011E8000-memory.dmp
memory/2112-2-0x0000000000EF0000-0x0000000000F30000-memory.dmp
memory/2112-3-0x00000000008B0000-0x00000000008C8000-memory.dmp
memory/2112-4-0x0000000074840000-0x0000000074F2E000-memory.dmp
memory/2112-5-0x0000000000EF0000-0x0000000000F30000-memory.dmp
memory/2112-6-0x0000000005660000-0x0000000005708000-memory.dmp
memory/2112-7-0x0000000000BA0000-0x0000000000BE0000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\tmpC3DB.tmp
| MD5 | b78dab0d9d37d28b47fa2023c052679a |
| SHA1 | 02852f0234c6f5dce0815ede6a7a3eec40e7e426 |
| SHA256 | 9c4794a608b67fc89d794a3a95ffb977d771b5ff6bb6e1b5cc5ee95cbe6d76ff |
| SHA512 | 685712048704527539f9899318acfcce2b3e8bf59528161e4a23a6de945563285353766b767e4d3280a59ea06ff99fbbf80fab5989bac122325879ee6b27dabf |
memory/2624-13-0x0000000000400000-0x0000000000438000-memory.dmp
memory/2624-15-0x0000000000400000-0x0000000000438000-memory.dmp
memory/2624-17-0x0000000000400000-0x0000000000438000-memory.dmp
memory/2624-19-0x0000000000400000-0x0000000000438000-memory.dmp
memory/2624-21-0x0000000000400000-0x0000000000438000-memory.dmp
memory/2624-23-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp
memory/2624-24-0x0000000000400000-0x0000000000438000-memory.dmp
memory/2624-26-0x0000000000400000-0x0000000000438000-memory.dmp
memory/2112-28-0x0000000074840000-0x0000000074F2E000-memory.dmp
memory/2624-27-0x0000000000400000-0x0000000000438000-memory.dmp
memory/2624-30-0x0000000000400000-0x0000000000438000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-02-29 00:59
Reported
2024-02-29 01:02
Platform
win10v2004-20240226-en
Max time kernel
150s
Max time network
149s
Command Line
Signatures
Oski
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-275798769-4264537674-1142822080-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\ad4b527e8240812756aa003af27b9e48.exe | N/A |
Uses the VBS compiler for execution
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 4984 set thread context of 1696 | N/A | C:\Users\Admin\AppData\Local\Temp\ad4b527e8240812756aa003af27b9e48.exe | C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe |
Enumerates physical storage devices
Program crash
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe |
Creates scheduled task(s)
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\schtasks.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\ad4b527e8240812756aa003af27b9e48.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\ad4b527e8240812756aa003af27b9e48.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\ad4b527e8240812756aa003af27b9e48.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\ad4b527e8240812756aa003af27b9e48.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\ad4b527e8240812756aa003af27b9e48.exe
"C:\Users\Admin\AppData\Local\Temp\ad4b527e8240812756aa003af27b9e48.exe"
C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\paGCyK" /XML "C:\Users\Admin\AppData\Local\Temp\tmpD7C2.tmp"
C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 464 -p 1696 -ip 1696
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1696 -s 1288
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 8.8.8.8.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 0.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 180.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | g.bing.com | udp |
| US | 204.79.197.200:443 | g.bing.com | tcp |
| US | 8.8.8.8:53 | 9.228.82.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 200.197.79.204.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 41.110.16.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 26.165.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 15.164.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 240.221.184.93.in-addr.arpa | udp |
| US | 8.8.8.8:53 | fredarlessonmark.com | udp |
| US | 8.8.8.8:53 | 29.243.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | udp |
Files
memory/4984-0-0x0000000000CC0000-0x0000000000DA8000-memory.dmp
memory/4984-1-0x0000000074960000-0x0000000075110000-memory.dmp
memory/4984-2-0x00000000057B0000-0x000000000584C000-memory.dmp
memory/4984-3-0x0000000005E00000-0x00000000063A4000-memory.dmp
memory/4984-4-0x0000000005850000-0x00000000058E2000-memory.dmp
memory/4984-5-0x0000000005AC0000-0x0000000005AD0000-memory.dmp
memory/4984-6-0x00000000057A0000-0x00000000057AA000-memory.dmp
memory/4984-7-0x0000000005A40000-0x0000000005A96000-memory.dmp
memory/4984-8-0x0000000005A20000-0x0000000005A38000-memory.dmp
memory/4984-9-0x0000000074960000-0x0000000075110000-memory.dmp
memory/4984-10-0x0000000005AC0000-0x0000000005AD0000-memory.dmp
memory/4984-11-0x0000000009370000-0x0000000009418000-memory.dmp
memory/4984-12-0x000000000BB70000-0x000000000BBB0000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\tmpD7C2.tmp
| MD5 | e95b03b7446e070e4d5075f6d03bbf1a |
| SHA1 | 6470bc6334cf5095ca874732130e5a34c445e423 |
| SHA256 | eccae6cfcfd4c2f86320608df7d98458c0c7d83632368c7c1496ae6ba60a4e90 |
| SHA512 | 04d481f37ecb00c5fb823a1ff92a19da95083cefca79105f9b9c9a4d6fac8b14649a453b06830395df9b7c3b6be6315468399874e541d592bc046826b5c0fc81 |
memory/1696-18-0x0000000000400000-0x0000000000438000-memory.dmp
memory/1696-19-0x0000000000400000-0x0000000000438000-memory.dmp
memory/1696-21-0x0000000000400000-0x0000000000438000-memory.dmp
memory/4984-22-0x0000000074960000-0x0000000075110000-memory.dmp
memory/1696-23-0x0000000000400000-0x0000000000438000-memory.dmp
memory/1696-26-0x0000000000400000-0x0000000000438000-memory.dmp