flyagent | bb06860b18b0a9b9accaf959a3b1d2773f1fa3085ed2dcfca05fb9c271a05a97

Analysis

max time kernel
56s
max time network
151s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260710-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260710-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
22/07/2026, 10:19

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General

Target
bb06860b18b0a9b9accaf959a3b1d2773f1fa3085ed2dcfca05fb9c271a05a97.exe
Size 1.2MB
Sample260722-mcghlade83
SHA256 bb06860b18b0a9b9accaf959a3b1d2773f1fa3085ed2dcfca05fb9c271a05a97
MD5 6c2cde9adc97ad4dbfe1f8eb1e19e92c
SHA1 f6b50df967cd52325b957e18293a7c525c2259fe
SHA512 5bd571f68b3bcc9b24e6e64cff30324ebc9427bfaf96c03faac7e22f9eb6d2a1fd9f28d1d614b462b31c65c80dc1fe49b38ca49795585489c0ce1f449d34de86
SSDEEP 24576:vaMoNmfTEs86C9r5m84DVTh22rFvGf9VLegQEollG4uXpeTR6R:v0NeEs86FvMLejlG4uYC
TLSH
T1E0459E27E9C180F2C198007168AB1F35FEB456912E358B87E7D4EEB85E72790DA3721D
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 2 IoCs

resource	yara_rule
behavioral2/memory/6128-16-0x0000000000400000-0x000000000056D000-memory.dmp	flyagent
behavioral2/memory/6128-23-0x0000000000400000-0x000000000056D000-memory.dmp	flyagent

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

execution

Visual Basic

T1059.005

pid	Process
4792	WScript.exe
4368	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	bb06860b18b0a9b9accaf959a3b1d2773f1fa3085ed2dcfca05fb9c271a05a97.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	WScript.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	WScript.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2301830172-776172150-2531349243-1000_Classes\Local Settings	bb06860b18b0a9b9accaf959a3b1d2773f1fa3085ed2dcfca05fb9c271a05a97.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
6128	bb06860b18b0a9b9accaf959a3b1d2773f1fa3085ed2dcfca05fb9c271a05a97.exe
6128	bb06860b18b0a9b9accaf959a3b1d2773f1fa3085ed2dcfca05fb9c271a05a97.exe
6128	bb06860b18b0a9b9accaf959a3b1d2773f1fa3085ed2dcfca05fb9c271a05a97.exe
6128	bb06860b18b0a9b9accaf959a3b1d2773f1fa3085ed2dcfca05fb9c271a05a97.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
6128	bb06860b18b0a9b9accaf959a3b1d2773f1fa3085ed2dcfca05fb9c271a05a97.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
6128	bb06860b18b0a9b9accaf959a3b1d2773f1fa3085ed2dcfca05fb9c271a05a97.exe
6128	bb06860b18b0a9b9accaf959a3b1d2773f1fa3085ed2dcfca05fb9c271a05a97.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 6128 wrote to memory of 4368	6128	bb06860b18b0a9b9accaf959a3b1d2773f1fa3085ed2dcfca05fb9c271a05a97.exe	89
PID 6128 wrote to memory of 4792	6128	bb06860b18b0a9b9accaf959a3b1d2773f1fa3085ed2dcfca05fb9c271a05a97.exe	90

C:\Users\Admin\AppData\Local\Temp\bb06860b18b0a9b9accaf959a3b1d2773f1fa3085ed2dcfca05fb9c271a05a97.exe
"C:\Users\Admin\AppData\Local\Temp\bb06860b18b0a9b9accaf959a3b1d2773f1fa3085ed2dcfca05fb9c271a05a97.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:6128
- 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:4368
- 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:4792

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 89665946e44d8a52f6a9d5075ed1d69f263b727d7858523c1b657e68dbafe8d0
MD5 070e2698e9c850c7dbd183d3e17c1a0d
SHA1 cf74d808b65f921fef40d487fb9541bbdbb44e10
SHA512 bbfec18622aecbe1db13bd564a8675e4a010d4c86079be98793e52b385695323505844d243a448c8f5ba51c19cf9db6927f9c845fc3a84db7ff2cf8794fe3f82
TLSH
T1FC01C010DE4CC25D503557B22533D40FF7AA15136303ACE9784DD1612F706688CB0A37
MD5 SHA1 SHA512 TLSH

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memory/6128-16-0x0000000000400000-0x000000000056D000-memory.dmp

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memory/6128-23-0x0000000000400000-0x000000000056D000-memory.dmp

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