flyagent | b70d1b30552e0cdf9d45b6812efd22336218fa785a369c72153f6f4e77677b65

Analysis

max time kernel
76s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20260130-en
resource tags

arch:x64arch:x86image:win10v2004-20260130-enlocale:en-usos:windows10-2004-x64systemwindows
submitted
29/04/2026, 10:02

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General

Target
b70d1b30552e0cdf9d45b6812efd22336218fa785a369c72153f6f4e77677b65.exe
Size 1.4MB
Sample260429-l2whdaev4m
SHA256 b70d1b30552e0cdf9d45b6812efd22336218fa785a369c72153f6f4e77677b65
MD5 3e944d00c52dc57629870d6b46959ccc
SHA1 6e5786dedb4c44f87f1ecef851dc9102a6c6a8ae
SHA512 23d67884744e4da190107d77db4802dcdbdb5919e5426d865c134aa20328fb64a49dee1700168820dee2c745f9e70626760e41f50638bbad499a4d5d522be8a1
SSDEEP 24576:GH0dl8myX9Bg42QoXFkrzkmplSgRDYo0lG4Z8r7Qfbkiu5Qc:GcallSllG4ZM7QzMb
TLSH
T182658D13F292C0F1E61C227124FB6339BE749B450A71CAC7EB95DD791C32691AB6720E
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 2 IoCs

resource	yara_rule
behavioral1/memory/400-0-0x0000000000400000-0x000000000055F000-memory.dmp	flyagent
behavioral1/memory/400-11-0x0000000000400000-0x000000000055F000-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-1-5-21-312252282-3884318443-358092420-1000\Control Panel\International\Geo\Nation	b70d1b30552e0cdf9d45b6812efd22336218fa785a369c72153f6f4e77677b65.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	b70d1b30552e0cdf9d45b6812efd22336218fa785a369c72153f6f4e77677b65.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-1-5-21-312252282-3884318443-358092420-1000_Classes\Local Settings	b70d1b30552e0cdf9d45b6812efd22336218fa785a369c72153f6f4e77677b65.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
400	b70d1b30552e0cdf9d45b6812efd22336218fa785a369c72153f6f4e77677b65.exe
400	b70d1b30552e0cdf9d45b6812efd22336218fa785a369c72153f6f4e77677b65.exe
400	b70d1b30552e0cdf9d45b6812efd22336218fa785a369c72153f6f4e77677b65.exe
400	b70d1b30552e0cdf9d45b6812efd22336218fa785a369c72153f6f4e77677b65.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
400	b70d1b30552e0cdf9d45b6812efd22336218fa785a369c72153f6f4e77677b65.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
400	b70d1b30552e0cdf9d45b6812efd22336218fa785a369c72153f6f4e77677b65.exe
400	b70d1b30552e0cdf9d45b6812efd22336218fa785a369c72153f6f4e77677b65.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 400 wrote to memory of 4572	400	b70d1b30552e0cdf9d45b6812efd22336218fa785a369c72153f6f4e77677b65.exe	85
PID 400 wrote to memory of 2344	400	b70d1b30552e0cdf9d45b6812efd22336218fa785a369c72153f6f4e77677b65.exe	86

C:\Users\Admin\AppData\Local\Temp\b70d1b30552e0cdf9d45b6812efd22336218fa785a369c72153f6f4e77677b65.exe
"C:\Users\Admin\AppData\Local\Temp\b70d1b30552e0cdf9d45b6812efd22336218fa785a369c72153f6f4e77677b65.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:400
- 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:4572
- 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:2344

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 ff805df989697cd38782f4c5b7d102649d50093b50f3be7ae5d97dce16178021
MD5 02bd6c6ddfea3054b139642c693a6a80
SHA1 596ebabb90773c61ca8b28c64914e839f7d6a270
SHA512 9c2dab8286c1324c24ee18e0b435622cea06b42f6a680278b7ed595d9996b6fad02c5a1916f268c2e52538c9aa3610d7f675933cbbbe489654fae9c4e0fbe5ad
TLSH
T10C01F400DD9CC21D503553761472E44FF7AA1913A3039CD9B98AD0A12F7076C9C70E77
MD5 SHA1 SHA512 TLSH

Submit Download

memory/400-0-0x0000000000400000-0x000000000055F000-memory.dmp

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memory/400-11-0x0000000000400000-0x000000000055F000-memory.dmp

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memory/400-12-0x0000000002270000-0x00000000022CF000-memory.dmp

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memory/2344-14-0x0000000000760000-0x00000000007BF000-memory.dmp

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memory/4572-13-0x00000000009D0000-0x0000000000A2F000-memory.dmp

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