flyagent | 7f40a9cbae07170be38d5ad5dcbbee8c6c51e55c9fc9d63bf37e930e879d9814

Analysis

max time kernel
25s
max time network
148s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
03/08/2026, 09:13

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General

Target
7f40a9cbae07170be38d5ad5dcbbee8c6c51e55c9fc9d63bf37e930e879d9814.exe
Size 1.2MB
Sample260803-k677asfc25
SHA256 7f40a9cbae07170be38d5ad5dcbbee8c6c51e55c9fc9d63bf37e930e879d9814
MD5 ad188aee0daa6d9b69ad7a72ebe6b9fa
SHA1 950e8e33f38d556d928f065eb559fe3ab67d91cf
SHA512 8b7846e0dc22c1a58db04b4538e822b358e46d1909e286947331d665897f912f8a1d4a71eab280f7b993983f9a025fc9ada1da37e6c76e35963e17539737ecfa
SSDEEP 24576:BjtC6RxD1hMbipXcvvX8wirRtcuO2hl5GdYquD+oHlG4Xt4JgPJCj8zDVpJE8:BjtxttI2vquflG4XtggPJMj8
TLSH
T18245AE23F18280F2C728113118FB1735FEB897565A70CA9BE7D4DE781D63251AB6B21E
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

backdoor discovery execution flyagent persistence privilege_escalation

Malware Config

Signatures

Family: FlyAgent
FlyAgent is a backdoor written in C++.
backdoor flyagent

Detects FlyAgent Backdoor 9 IoCs

resource	yara_rule
behavioral2/memory/4344-0-0x0000000000400000-0x0000000000576000-memory.dmp	flyagent
behavioral2/files/0x000e00000001c52a-22.dat	flyagent
behavioral2/memory/4344-30-0x0000000000400000-0x0000000000576000-memory.dmp	flyagent
behavioral2/memory/4344-33-0x0000000000400000-0x0000000000576000-memory.dmp	flyagent
behavioral2/memory/4344-36-0x0000000000400000-0x0000000000576000-memory.dmp	flyagent
behavioral2/memory/4344-40-0x0000000000400000-0x0000000000576000-memory.dmp	flyagent
behavioral2/memory/4344-43-0x0000000000400000-0x0000000000576000-memory.dmp	flyagent
behavioral2/memory/4344-46-0x0000000000400000-0x0000000000576000-memory.dmp	flyagent
behavioral2/memory/4344-49-0x0000000000400000-0x0000000000576000-memory.dmp	flyagent

Creates a file in the Startup directory 1 TTPs 1 IoCs

A file was written to a Windows startup folder. Files in these directories are executed automatically when a user logs on or an application initializes.

persistence privilege_escalation

Registry Run Keys / Startup Folder

T1547.001

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\win.lnk	7f40a9cbae07170be38d5ad5dcbbee8c6c51e55c9fc9d63bf37e930e879d9814.exe

Executes dropped EXE 1 IoCs

pid	Process
4828	svchcst.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\360safo = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\svchcst.exe"	7f40a9cbae07170be38d5ad5dcbbee8c6c51e55c9fc9d63bf37e930e879d9814.exe

Executes a VBScript file via the Windows Script Host. 1 TTPs 3 IoCs

execution

Visual Basic

T1059.005

pid	Process
3388	WScript.exe
3588	WScript.exe
5068	WScript.exe

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	WScript.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	WScript.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	WScript.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchcst.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	7f40a9cbae07170be38d5ad5dcbbee8c6c51e55c9fc9d63bf37e930e879d9814.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-552508041-2681165170-3229858294-1000_Classes\Local Settings	7f40a9cbae07170be38d5ad5dcbbee8c6c51e55c9fc9d63bf37e930e879d9814.exe

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
4344	7f40a9cbae07170be38d5ad5dcbbee8c6c51e55c9fc9d63bf37e930e879d9814.exe
4344	7f40a9cbae07170be38d5ad5dcbbee8c6c51e55c9fc9d63bf37e930e879d9814.exe
4344	7f40a9cbae07170be38d5ad5dcbbee8c6c51e55c9fc9d63bf37e930e879d9814.exe
4344	7f40a9cbae07170be38d5ad5dcbbee8c6c51e55c9fc9d63bf37e930e879d9814.exe
4344	7f40a9cbae07170be38d5ad5dcbbee8c6c51e55c9fc9d63bf37e930e879d9814.exe
4344	7f40a9cbae07170be38d5ad5dcbbee8c6c51e55c9fc9d63bf37e930e879d9814.exe
4344	7f40a9cbae07170be38d5ad5dcbbee8c6c51e55c9fc9d63bf37e930e879d9814.exe
4344	7f40a9cbae07170be38d5ad5dcbbee8c6c51e55c9fc9d63bf37e930e879d9814.exe
4344	7f40a9cbae07170be38d5ad5dcbbee8c6c51e55c9fc9d63bf37e930e879d9814.exe
4344	7f40a9cbae07170be38d5ad5dcbbee8c6c51e55c9fc9d63bf37e930e879d9814.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
4344	7f40a9cbae07170be38d5ad5dcbbee8c6c51e55c9fc9d63bf37e930e879d9814.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
4344	7f40a9cbae07170be38d5ad5dcbbee8c6c51e55c9fc9d63bf37e930e879d9814.exe
4344	7f40a9cbae07170be38d5ad5dcbbee8c6c51e55c9fc9d63bf37e930e879d9814.exe
4828	svchcst.exe
4828	svchcst.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4344 wrote to memory of 3588	4344	7f40a9cbae07170be38d5ad5dcbbee8c6c51e55c9fc9d63bf37e930e879d9814.exe	89
PID 4344 wrote to memory of 3388	4344	7f40a9cbae07170be38d5ad5dcbbee8c6c51e55c9fc9d63bf37e930e879d9814.exe	90
PID 4344 wrote to memory of 5068	4344	7f40a9cbae07170be38d5ad5dcbbee8c6c51e55c9fc9d63bf37e930e879d9814.exe	91

C:\Users\Admin\AppData\Local\Temp\7f40a9cbae07170be38d5ad5dcbbee8c6c51e55c9fc9d63bf37e930e879d9814.exe
"C:\Users\Admin\AppData\Local\Temp\7f40a9cbae07170be38d5ad5dcbbee8c6c51e55c9fc9d63bf37e930e879d9814.exe"
1⤵
- Creates a file in the Startup directory
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: RenamesItself
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4344
- C:\Windows\SysWOW64\WScript.exe
  "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\Microsoft\VBS3.vbs"
  2⤵
  - Executes a VBScript file via the Windows Script Host.
  - System Location Discovery: System Language Discovery
  PID:3588
- C:\Windows\SysWOW64\WScript.exe
  "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\Microsoft\VBS3.vbs"
  2⤵
  - Executes a VBScript file via the Windows Script Host.
  - System Location Discovery: System Language Discovery
  PID:3388
- C:\Windows\SysWOW64\WScript.exe
  "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\Microsoft\VBS3.vbs"
  2⤵
  - Executes a VBScript file via the Windows Script Host.
  - System Location Discovery: System Language Discovery
  PID:5068

C:\Users\Admin\AppData\Roaming\Microsoft\svchcst.exe
C:\Users\Admin\AppData\Roaming\Microsoft\svchcst.exe
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
PID:4828

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

Visual Basic

T1059.005

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

Config.ini

Path C:\Users\Admin\AppData\Roaming\Microsoft\Config.ini
Size 92B
SHA256 7bfcc2f0d3c25f895eac6676d4ce9f16713149206980fb97f4aa4272e82ed2b8
MD5 616ffedca89dfde66c19c781ec4933c5
SHA1 05d28ae3243fbaed0b925f218c1c7c71a5dbbca1
SHA512 8a6fa82b124203512e1ed3d4ad037df7a3c2ec3d8f1db6b5d4e591ccb08c1c44b2a8589d769697c0f1ea35e711b38eb8fbab3fa3a24be99d099782b9c6c25a8f
MD5 SHA1 SHA512

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VBS3.vbs

Path C:\Users\Admin\AppData\Roaming\Microsoft\VBS3.vbs
Size 753B
SHA256 fcc6878f45a8ffe562a826555adfe261e6bae2056434b249e994affeb595b252
MD5 b2da42ba5e5db1a4f245be89f0591ac1
SHA1 eb9a977844640c42f87297ca460662d2937747b3
SHA512 45a36df86c04a244b5663b25c1574f62ee9465ca9e6f1e2c0e3086ec0a9fbebdfdd91bc355dcfafbb6c16986002c9a94aa5d2fa8216626823c60807277e679e0
TLSH
T1E001C000DE5C8259503543B62533A44EE3AA19536703ECD8B855D1B52F706688C75A33
MD5 SHA1 SHA512 TLSH

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svchcst.exe

Path C:\Users\Admin\AppData\Roaming\Microsoft\svchcst.exe
Size 1.2MB
SHA256 d6e6cc5d9a901db3e31567b01549ca2a679131d7228750898a282e714e6c798f
MD5 0524498b378974724fbc1af7375da7c9
SHA1 5f8ed19323a2735c062095d84387d46e1f1dadea
SHA512 d7e1dd0c273009df719c634dcde5233dc02b8b5ba550707201755bcec63b3d1ba6ca9ee73c06ad094035786c7059e930e7aca88060dd1108c630ca57b8ae17c2
SSDEEP 24576:BjtC6RxD1hMbipXcvvX8wirRtcuO2hl5GdYquD+oHlG4Xt4JgPJCj8zDVpJEr:BjtxttI2vquflG4XtggPJMjr
TLSH
T13A45AE23F18280F2C728113118FB1735FEB897565A70CA9BE7D4DE781D63251AB6B21E
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/4344-0-0x0000000000400000-0x0000000000576000-memory.dmp

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memory/4344-30-0x0000000000400000-0x0000000000576000-memory.dmp

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memory/4344-33-0x0000000000400000-0x0000000000576000-memory.dmp

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memory/4344-36-0x0000000000400000-0x0000000000576000-memory.dmp

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memory/4344-40-0x0000000000400000-0x0000000000576000-memory.dmp

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memory/4344-43-0x0000000000400000-0x0000000000576000-memory.dmp

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memory/4344-46-0x0000000000400000-0x0000000000576000-memory.dmp

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memory/4344-49-0x0000000000400000-0x0000000000576000-memory.dmp

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