flyagent | 3fa0962be2ca2ecddf85d64135db0bd309a34569f36d9a549a1c8dea6668b0c8

Analysis

max time kernel
118s
max time network
142s
platform
windows10-2004_x64
resource
win10v2004-20260130-en
resource tags

arch:x64arch:x86image:win10v2004-20260130-enlocale:en-usos:windows10-2004-x64systemwindows
submitted
23/04/2026, 22:38

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General

Target
3fa0962be2ca2ecddf85d64135db0bd309a34569f36d9a549a1c8dea6668b0c8.exe
Size 1.3MB
Sample260423-2kb1eahv6j
SHA256 3fa0962be2ca2ecddf85d64135db0bd309a34569f36d9a549a1c8dea6668b0c8
MD5 fe2e1ebd88e66c264b50f61758019499
SHA1 ecc171ccad06d4787da717727f27769aff58ffc1
SHA512 030f2547b3e0b6047f6a77f9d97ce4b862f580ab4bb346e0082a6cdf152fac1295cd48b16fb2019c6d636db99761c2bd18dfabd28bc40f4db676d3034d2f23df
SSDEEP 24576:WBS9qQEK6QywlBqH82QoXFkrzkmmlSgRDko0lG4Z8r7Qfd7iu5q:WZaClSFlG4ZM7QlVM
TLSH
T1B1557C13F692C0F1E61C227124FB6339BE7497450A71CACBE794DD791C32691ABA720E
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 1 IoCs

resource	yara_rule
behavioral1/memory/3600-10-0x0000000000400000-0x0000000000551000-memory.dmp	flyagent

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-745935970-1373868228-562466063-1000\Control Panel\International\Geo\Nation	3fa0962be2ca2ecddf85d64135db0bd309a34569f36d9a549a1c8dea6668b0c8.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	3fa0962be2ca2ecddf85d64135db0bd309a34569f36d9a549a1c8dea6668b0c8.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-745935970-1373868228-562466063-1000_Classes\Local Settings	3fa0962be2ca2ecddf85d64135db0bd309a34569f36d9a549a1c8dea6668b0c8.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3600	3fa0962be2ca2ecddf85d64135db0bd309a34569f36d9a549a1c8dea6668b0c8.exe
3600	3fa0962be2ca2ecddf85d64135db0bd309a34569f36d9a549a1c8dea6668b0c8.exe
3600	3fa0962be2ca2ecddf85d64135db0bd309a34569f36d9a549a1c8dea6668b0c8.exe
3600	3fa0962be2ca2ecddf85d64135db0bd309a34569f36d9a549a1c8dea6668b0c8.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
3600	3fa0962be2ca2ecddf85d64135db0bd309a34569f36d9a549a1c8dea6668b0c8.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
3600	3fa0962be2ca2ecddf85d64135db0bd309a34569f36d9a549a1c8dea6668b0c8.exe
3600	3fa0962be2ca2ecddf85d64135db0bd309a34569f36d9a549a1c8dea6668b0c8.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 3600 wrote to memory of 520	3600	3fa0962be2ca2ecddf85d64135db0bd309a34569f36d9a549a1c8dea6668b0c8.exe	86
PID 3600 wrote to memory of 3800	3600	3fa0962be2ca2ecddf85d64135db0bd309a34569f36d9a549a1c8dea6668b0c8.exe	87

C:\Users\Admin\AppData\Local\Temp\3fa0962be2ca2ecddf85d64135db0bd309a34569f36d9a549a1c8dea6668b0c8.exe
"C:\Users\Admin\AppData\Local\Temp\3fa0962be2ca2ecddf85d64135db0bd309a34569f36d9a549a1c8dea6668b0c8.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: RenamesItself
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3600
- 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:520
- 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:3800

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

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 a7950d77f9dddf4dcb2ecf720f80fbd97bd5fcfad2284b96db961aa7946af236
MD5 2ed9e41fe9187b274afdccc72378b219
SHA1 c518b2e7b16d6552a028bd383203b6a4fa5685f6
SHA512 100629650729ed402125079f5d676bd2f0a322a2a39f29d8ca701a08889089574c8153a5106c2e8f81ff52c42e2a7af4985aa11845dd47f81fbdd4743906c401
TLSH
T14001CB00DD4CC22C503593762573E40EF7AA2543A313ACD9B895D1A52FB0B689CB4E36
MD5 SHA1 SHA512 TLSH

Submit Download

memory/520-12-0x0000000002C20000-0x0000000002C83000-memory.dmp

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memory/3600-10-0x0000000000400000-0x0000000000551000-memory.dmp

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memory/3600-11-0x00000000006C0000-0x00000000006E5000-memory.dmp

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memory/3800-13-0x0000000003670000-0x00000000036D3000-memory.dmp

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