flyagent | 1a779acde1b26fa9a6e63a2977b5696d99180579c0c4d62300f47dae74f231cf

Analysis

max time kernel
118s
max time network
151s
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, 11:15

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General

Target
1a779acde1b26fa9a6e63a2977b5696d99180579c0c4d62300f47dae74f231cf.exe
Size 1.3MB
Sample260423-nczvlsa151
SHA256 1a779acde1b26fa9a6e63a2977b5696d99180579c0c4d62300f47dae74f231cf
MD5 5ca87c104ea1c67f4ef8475546aed20a
SHA1 b1d0e5c9afdfead5adc2593d2e3a47e2bbd7f19f
SHA512 1569f409eef7b413740e3d8808e3f7ec987d5ca1a81fd526e592b856cfec8768313bd2bd0d8805509d2e371609ba8823020dcfee03b92e068d370eec9e24b083
SSDEEP 24576:WBS9qQEK6QywlBqH82QoXFkrzkmmlSgRDko0lG4Z8r7Qfd7iu5B:WZaClSFlG4ZM7QlVz
TLSH
T1C1557C13F692C0F1E61C227124FB6339BE7497450A71CACBE794DD791C32691ABA720E
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/2044-10-0x0000000000400000-0x0000000000551000-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-1-5-21-721190819-434563495-2007910846-1000\Control Panel\International\Geo\Nation	1a779acde1b26fa9a6e63a2977b5696d99180579c0c4d62300f47dae74f231cf.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	1a779acde1b26fa9a6e63a2977b5696d99180579c0c4d62300f47dae74f231cf.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-1-5-21-721190819-434563495-2007910846-1000_Classes\Local Settings	1a779acde1b26fa9a6e63a2977b5696d99180579c0c4d62300f47dae74f231cf.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2044	1a779acde1b26fa9a6e63a2977b5696d99180579c0c4d62300f47dae74f231cf.exe
2044	1a779acde1b26fa9a6e63a2977b5696d99180579c0c4d62300f47dae74f231cf.exe
2044	1a779acde1b26fa9a6e63a2977b5696d99180579c0c4d62300f47dae74f231cf.exe
2044	1a779acde1b26fa9a6e63a2977b5696d99180579c0c4d62300f47dae74f231cf.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
2044	1a779acde1b26fa9a6e63a2977b5696d99180579c0c4d62300f47dae74f231cf.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2044	1a779acde1b26fa9a6e63a2977b5696d99180579c0c4d62300f47dae74f231cf.exe
2044	1a779acde1b26fa9a6e63a2977b5696d99180579c0c4d62300f47dae74f231cf.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 2044 wrote to memory of 1136	2044	1a779acde1b26fa9a6e63a2977b5696d99180579c0c4d62300f47dae74f231cf.exe	84
PID 2044 wrote to memory of 4932	2044	1a779acde1b26fa9a6e63a2977b5696d99180579c0c4d62300f47dae74f231cf.exe	85

C:\Users\Admin\AppData\Local\Temp\1a779acde1b26fa9a6e63a2977b5696d99180579c0c4d62300f47dae74f231cf.exe
"C:\Users\Admin\AppData\Local\Temp\1a779acde1b26fa9a6e63a2977b5696d99180579c0c4d62300f47dae74f231cf.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:2044
- 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:1136
- 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:4932

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 0fc13e6fe45031c4c85372f906029b501138203180ab45741a8967400175ef9e
MD5 2605c76e6d252f22bdd9e50f1a233e15
SHA1 318f409d6b5c02faa7b9e3629df4ffcc9260b3c6
SHA512 c0745c9c10d6f3c14cdf313391608502cb1a931be5d1690fa091e7c8de9e3dd609411c3afa758b806ff97c9fa8b7c8ccd8c1869c059a172044c5e8ee327186ae
TLSH
T13001C000DD5C825C9034577A2432E44EF7DE1553A303ACD87899C1652F70768ADB1A33
MD5 SHA1 SHA512 TLSH

Submit Download

memory/1136-12-0x0000000002930000-0x0000000002A03000-memory.dmp

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memory/2044-10-0x0000000000400000-0x0000000000551000-memory.dmp

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memory/2044-11-0x0000000002430000-0x0000000002503000-memory.dmp

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memory/4932-13-0x0000000003530000-0x0000000003603000-memory.dmp

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