flyagent | 7b75c820e88e604a28bda151ea53067e3dab6ca9347ac608e4ea477d7ecd332f

Analysis

max time kernel
97s
max time network
93s
platform
windows11-21h2_x64
resource
win11-20260130-en
resource tags

arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows
submitted
28/04/2026, 10:38

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General

Target
7b75c820e88e604a28bda151ea53067e3dab6ca9347ac608e4ea477d7ecd332f.exe
Size 1.4MB
Sample260428-mpff3ab13l
SHA256 7b75c820e88e604a28bda151ea53067e3dab6ca9347ac608e4ea477d7ecd332f
MD5 61ea47f46729c102ef97ec508ebea1b7
SHA1 6d0e00ffa8305d756983f29ba807c810982a6895
SHA512 f0f2d56327534caba2e25ea9fc211236905b91b8d111fc755e07fa3ed5954d348edab4a65473034508918ad89a33f42578c61b37a5b38aa70cd7b08d71de79d8
SSDEEP 24576:GH0dl8myX9Bg42QoXFkrzkmplSgRDYo0lG4Z8r7Qfbkiu5Qq:GcallSllG4ZM7QzMZ
TLSH
T199658D13F292C0F1E61C227124FB6339BE749B450A71CAC7EB95DD791C32691AB6720E
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

backdoor discovery 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/5196-0-0x0000000000400000-0x000000000055F000-memory.dmp	flyagent
behavioral2/memory/5196-11-0x0000000000400000-0x000000000055F000-memory.dmp	flyagent
behavioral2/memory/5196-13-0x0000000000400000-0x000000000055F000-memory.dmp	flyagent

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	7b75c820e88e604a28bda151ea53067e3dab6ca9347ac608e4ea477d7ecd332f.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-1-5-21-2397528088-2630719772-1129911217-1000_Classes\Local Settings	7b75c820e88e604a28bda151ea53067e3dab6ca9347ac608e4ea477d7ecd332f.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
5196	7b75c820e88e604a28bda151ea53067e3dab6ca9347ac608e4ea477d7ecd332f.exe
5196	7b75c820e88e604a28bda151ea53067e3dab6ca9347ac608e4ea477d7ecd332f.exe
5196	7b75c820e88e604a28bda151ea53067e3dab6ca9347ac608e4ea477d7ecd332f.exe
5196	7b75c820e88e604a28bda151ea53067e3dab6ca9347ac608e4ea477d7ecd332f.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
5196	7b75c820e88e604a28bda151ea53067e3dab6ca9347ac608e4ea477d7ecd332f.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
5196	7b75c820e88e604a28bda151ea53067e3dab6ca9347ac608e4ea477d7ecd332f.exe
5196	7b75c820e88e604a28bda151ea53067e3dab6ca9347ac608e4ea477d7ecd332f.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 5196 wrote to memory of 4996	5196	7b75c820e88e604a28bda151ea53067e3dab6ca9347ac608e4ea477d7ecd332f.exe	79
PID 5196 wrote to memory of 4992	5196	7b75c820e88e604a28bda151ea53067e3dab6ca9347ac608e4ea477d7ecd332f.exe	80

C:\Users\Admin\AppData\Local\Temp\7b75c820e88e604a28bda151ea53067e3dab6ca9347ac608e4ea477d7ecd332f.exe
"C:\Users\Admin\AppData\Local\Temp\7b75c820e88e604a28bda151ea53067e3dab6ca9347ac608e4ea477d7ecd332f.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:5196
- C:\Windows\SysWOW64\WScript.exe
  "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\Microsoft\VBS3.vbs"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4996
- C:\Windows\SysWOW64\WScript.exe
  "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\Microsoft\VBS3.vbs"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4992

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

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 d50e460a7211b8ac8fb86e8636312cae11559b999a2d4b2b95dd0b0739d60fba
MD5 2f0e6f64ebfefa16f167a0c1b05ad109
SHA1 db94ded2d0de4fbc9ac2d8d665640e8fd0bc1856
SHA512 40bfc0bf97b9517861b3e64efd2ab7003a6fddcbb11c2a4ca4988d7d3427bbf53f157c8424268c84b3c106b27d6a030a5821c7ce3a96a789a21ef7fd6881a403
TLSH
T13701C001DD4C825D507593752532D44BF7EA15236303ACD8B955D1B12F707A89D75A32
MD5 SHA1 SHA512 TLSH

Submit Download

memory/5196-0-0x0000000000400000-0x000000000055F000-memory.dmp

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memory/5196-11-0x0000000000400000-0x000000000055F000-memory.dmp

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memory/5196-12-0x0000000000AE0000-0x0000000000BA1000-memory.dmp

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memory/5196-13-0x0000000000400000-0x000000000055F000-memory.dmp

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memory/5196-18-0x0000000000AE0000-0x0000000000BA1000-memory.dmp

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