flyagent | 85c31266d54af9b6617baa7aa13a1043e4aa062dd899043173e716d26b8b49b4

Analysis

max time kernel
56s
max time network
127s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260911-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
09/10/2026, 04:34

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General

Target
85c31266d54af9b6617baa7aa13a1043e4aa062dd899043173e716d26b8b49b4.exe
Size 1.1MB
Sample261009-e647rayvfz
SHA256 85c31266d54af9b6617baa7aa13a1043e4aa062dd899043173e716d26b8b49b4
MD5 bea6cd2222202ec6065e3a96e8ecfe70
SHA1 557e13fee103ec24f2a7c1da2fc6afa055b60b65
SHA512 981d2ee91082f6c613c63cc6b6bafc3aa7b8af583f5b9e4bf3b3d6d3d4b5ae42190cf38ce0d6fcaa91dfee00cb90ff913e0bb7e15ffa52ba9997b70a0af5056d
SSDEEP 24576:aH0dl8myX9Bg42QoXFkrzkmplSgRDYo0lG4Z8r7Qfbkiu5Q0:acallSllG4ZM7QzMj
TLSH
T1D2458D13F292C0F1E61C227124FB6339BE749B450A71CAC7E795DD791C32691ABA720E
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/3152-0-0x0000000000400000-0x000000000055F000-memory.dmp	flyagent
behavioral2/memory/3152-19-0x0000000000400000-0x000000000055F000-memory.dmp	flyagent

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

execution

Visual Basic

T1059.005

pid	Process
5012	WScript.exe
3180	WScript.exe

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

System Information Discovery
T1082

Reads the TCP/IP host and domain name from the registry 1 TTPs 4 IoCs

The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.

discovery

System Network Configuration Discovery

T1016

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Hostname	WScript.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Hostname	WScript.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Domain	WScript.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Domain	WScript.exe

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	85c31266d54af9b6617baa7aa13a1043e4aa062dd899043173e716d26b8b49b4.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-1-5-21-53044966-3830981193-2402648431-1000_Classes\Local Settings	85c31266d54af9b6617baa7aa13a1043e4aa062dd899043173e716d26b8b49b4.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3152	85c31266d54af9b6617baa7aa13a1043e4aa062dd899043173e716d26b8b49b4.exe
3152	85c31266d54af9b6617baa7aa13a1043e4aa062dd899043173e716d26b8b49b4.exe
3152	85c31266d54af9b6617baa7aa13a1043e4aa062dd899043173e716d26b8b49b4.exe
3152	85c31266d54af9b6617baa7aa13a1043e4aa062dd899043173e716d26b8b49b4.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
3152	85c31266d54af9b6617baa7aa13a1043e4aa062dd899043173e716d26b8b49b4.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
3152	85c31266d54af9b6617baa7aa13a1043e4aa062dd899043173e716d26b8b49b4.exe
3152	85c31266d54af9b6617baa7aa13a1043e4aa062dd899043173e716d26b8b49b4.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 3152 wrote to memory of 3180	3152	85c31266d54af9b6617baa7aa13a1043e4aa062dd899043173e716d26b8b49b4.exe	89
PID 3152 wrote to memory of 5012	3152	85c31266d54af9b6617baa7aa13a1043e4aa062dd899043173e716d26b8b49b4.exe	90

C:\Users\Admin\AppData\Local\Temp\85c31266d54af9b6617baa7aa13a1043e4aa062dd899043173e716d26b8b49b4.exe
"C:\Users\Admin\AppData\Local\Temp\85c31266d54af9b6617baa7aa13a1043e4aa062dd899043173e716d26b8b49b4.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:3152
- 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.
  - Reads the TCP/IP host and domain name from the registry
  - System Location Discovery: System Language Discovery
  PID:3180
- 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.
  - Reads the TCP/IP host and domain name from the registry
  - System Location Discovery: System Language Discovery
  PID:5012

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

System Network Configuration Discovery

T1016

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

VBS3.vbs

Path C:\Users\Admin\AppData\Roaming\Microsoft\VBS3.vbs
Size 753B
SHA256 a8132fdf74e2cb78ffe4f270f143d5382b5f55d5efd818de7e3363bc4ea73b87
MD5 2ed3d8e88838ea86a386182626ceef83
SHA1 d033cff357a164ee01cb792c0b84dfc60f8b10be
SHA512 b69e4a025bb061b71f465f527525b4053d73396098eec0470460612bbd712bffae016cc3fbef5601457fb1a8b0d02e1e09e9db9d88cf0d7d8f345ee2aa0ca3e4
TLSH
T1D001FE10ED9CC25D603543B66532E44EF7EA1543A303ACE9B859D1B13F70B6C9DB4A36
MD5 SHA1 SHA512 TLSH

Submit Download

memory/3152-0-0x0000000000400000-0x000000000055F000-memory.dmp

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memory/3152-19-0x0000000000400000-0x000000000055F000-memory.dmp

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