flyagent | e18bb79ad25cfea01faed56dbd10cd4ba8200fdf6bf8655c8fd20af9423c1108

Analysis

max time kernel
42s
max time network
124s
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, 12:57

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General

Target
e18bb79ad25cfea01faed56dbd10cd4ba8200fdf6bf8655c8fd20af9423c1108.exe
Size 1.1MB
Sample260803-p67b8aydkf
SHA256 e18bb79ad25cfea01faed56dbd10cd4ba8200fdf6bf8655c8fd20af9423c1108
MD5 eb227553ab5c3b8664e9f9d0f822a998
SHA1 0967e63eeeed2f077040961fd5da6b2c18a1bb1a
SHA512 29a1b173df722a0573d0c73d948d122273c337b8d44e7be08282264bdcdeca94f06506671ce35cb28ddf0ef36ab79e97e90d73234de8ed5881160ec7ff9f21c7
SSDEEP 24576:aH0dl8myX9Bg42QoXFkrzkmplSgRDYo0lG4Z8r7Qfbkiu5Qh:acallSllG4ZM7QzMY
TLSH
T111458C13F292C0F1E61C227124FB6339BE749B450A71CAC7E795DD791C32691ABA720E
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

backdoor discovery execution flyagent

Malware Config

Signatures

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

Detects FlyAgent Backdoor 3 IoCs

resource	yara_rule
behavioral2/memory/5024-0-0x0000000000400000-0x000000000055F000-memory.dmp	flyagent
behavioral2/memory/5024-18-0x0000000000400000-0x000000000055F000-memory.dmp	flyagent
behavioral2/memory/5024-19-0x0000000000400000-0x000000000055F000-memory.dmp	flyagent

Executes a VBScript file via the Windows Script Host. 1 TTPs 2 IoCs

execution

Visual Basic

T1059.005

pid	Process
4320	WScript.exe
4324	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 3 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	e18bb79ad25cfea01faed56dbd10cd4ba8200fdf6bf8655c8fd20af9423c1108.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1875162379-3804078649-638427191-1000_Classes\Local Settings	e18bb79ad25cfea01faed56dbd10cd4ba8200fdf6bf8655c8fd20af9423c1108.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
5024	e18bb79ad25cfea01faed56dbd10cd4ba8200fdf6bf8655c8fd20af9423c1108.exe
5024	e18bb79ad25cfea01faed56dbd10cd4ba8200fdf6bf8655c8fd20af9423c1108.exe
5024	e18bb79ad25cfea01faed56dbd10cd4ba8200fdf6bf8655c8fd20af9423c1108.exe
5024	e18bb79ad25cfea01faed56dbd10cd4ba8200fdf6bf8655c8fd20af9423c1108.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
5024	e18bb79ad25cfea01faed56dbd10cd4ba8200fdf6bf8655c8fd20af9423c1108.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
5024	e18bb79ad25cfea01faed56dbd10cd4ba8200fdf6bf8655c8fd20af9423c1108.exe
5024	e18bb79ad25cfea01faed56dbd10cd4ba8200fdf6bf8655c8fd20af9423c1108.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 5024 wrote to memory of 4320	5024	e18bb79ad25cfea01faed56dbd10cd4ba8200fdf6bf8655c8fd20af9423c1108.exe	90
PID 5024 wrote to memory of 4324	5024	e18bb79ad25cfea01faed56dbd10cd4ba8200fdf6bf8655c8fd20af9423c1108.exe	91

C:\Users\Admin\AppData\Local\Temp\e18bb79ad25cfea01faed56dbd10cd4ba8200fdf6bf8655c8fd20af9423c1108.exe
"C:\Users\Admin\AppData\Local\Temp\e18bb79ad25cfea01faed56dbd10cd4ba8200fdf6bf8655c8fd20af9423c1108.exe"
1⤵
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: RenamesItself
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:5024
- 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:4320
- 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:4324

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

Visual Basic

T1059.005

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

VBS3.vbs

Path C:\Users\Admin\AppData\Roaming\Microsoft\VBS3.vbs
Size 753B
SHA256 91bf0fa653bf62f2b0a3a37be4d7a3be6e604e68209dcac83b2a092d407ba4a2
MD5 f89533cc5c5b7b46d14753f9a1b31908
SHA1 e04d8942b5492d544ef423783d191efa54a08015
SHA512 d274e2ed679144a8d0228002a3d1d6a754d4e14ee22dae0c6f64d3338ad04c3b0371e0b99a32ae07ed91cd23e432276c7aac933e7f398343e55adbab3799254a
TLSH
T19301C010DD4C825C503553772432A48EF7EA255363036CD9B896D1652FB07689C74A3A
MD5 SHA1 SHA512 TLSH

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memory/5024-0-0x0000000000400000-0x000000000055F000-memory.dmp

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memory/5024-18-0x0000000000400000-0x000000000055F000-memory.dmp

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memory/5024-19-0x0000000000400000-0x000000000055F000-memory.dmp

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