flyagent | da211b361edc5870d5c771be27d2902c30bef4cf7bb4de386f2b63fd29cf4442

Analysis

max time kernel
27s
max time network
155s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
09/08/2026, 10:20

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General

Target
da211b361edc5870d5c771be27d2902c30bef4cf7bb4de386f2b63fd29cf4442.exe
Size 1.2MB
Sample260809-mdarfay1ay
SHA256 da211b361edc5870d5c771be27d2902c30bef4cf7bb4de386f2b63fd29cf4442
MD5 64baa2e9f7a45fd1e48dc1508d6b03b2
SHA1 62a0cbc42bedc854c1dd1752e49157f616164270
SHA512 799b30680c2f2aa0ecd1e1b6a86a588e7bf7b30fd2fe9a811f944d17a4c206bd21b98d36c81a8b133c865439d999cb49d22d3a9b333f3fa4d4e5f190c768669d
SSDEEP 24576:BjtC6RxD1hMbipXcvvX8wirRtcuO2hl5GdYquD+oHlG4Xt4JgPJCj8zDVpJEr:BjtxttI2vquflG4XtggPJMjr
TLSH
T1E245AE23F18280F2C728113118FB1735FEB897565A70CA9BE7D4DE781D63251AB6B21E
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

backdoor discovery execution flyagent persistence privilege_escalation

Malware Config

Signatures

Family: FlyAgent
FlyAgent is a backdoor written in C++.
backdoor flyagent

Detects FlyAgent Backdoor 9 IoCs

resource	yara_rule
behavioral2/memory/2336-0-0x0000000000400000-0x0000000000576000-memory.dmp	flyagent
behavioral2/files/0x000e00000001c52d-22.dat	flyagent
behavioral2/memory/2336-30-0x0000000000400000-0x0000000000576000-memory.dmp	flyagent
behavioral2/memory/2336-33-0x0000000000400000-0x0000000000576000-memory.dmp	flyagent
behavioral2/memory/2336-36-0x0000000000400000-0x0000000000576000-memory.dmp	flyagent
behavioral2/memory/2336-40-0x0000000000400000-0x0000000000576000-memory.dmp	flyagent
behavioral2/memory/2336-43-0x0000000000400000-0x0000000000576000-memory.dmp	flyagent
behavioral2/memory/2336-46-0x0000000000400000-0x0000000000576000-memory.dmp	flyagent
behavioral2/memory/2336-49-0x0000000000400000-0x0000000000576000-memory.dmp	flyagent

Creates a file in the Startup directory 1 TTPs 1 IoCs

A file was written to a Windows startup folder. Files in these directories are executed automatically when a user logs on or an application initializes.

persistence privilege_escalation

Registry Run Keys / Startup Folder

T1547.001

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\win.lnk	da211b361edc5870d5c771be27d2902c30bef4cf7bb4de386f2b63fd29cf4442.exe

Executes dropped EXE 1 IoCs

pid	Process
3548	svchcst.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\360safo = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\svchcst.exe"	da211b361edc5870d5c771be27d2902c30bef4cf7bb4de386f2b63fd29cf4442.exe

Executes a VBScript file via the Windows Script Host. 1 TTPs 3 IoCs

execution

Visual Basic

T1059.005

pid	Process
5608	WScript.exe
4800	WScript.exe
5116	WScript.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 5 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	svchcst.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	da211b361edc5870d5c771be27d2902c30bef4cf7bb4de386f2b63fd29cf4442.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-1-5-21-1875162379-3804078649-638427191-1000_Classes\Local Settings	da211b361edc5870d5c771be27d2902c30bef4cf7bb4de386f2b63fd29cf4442.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
2336	da211b361edc5870d5c771be27d2902c30bef4cf7bb4de386f2b63fd29cf4442.exe
2336	da211b361edc5870d5c771be27d2902c30bef4cf7bb4de386f2b63fd29cf4442.exe
2336	da211b361edc5870d5c771be27d2902c30bef4cf7bb4de386f2b63fd29cf4442.exe
2336	da211b361edc5870d5c771be27d2902c30bef4cf7bb4de386f2b63fd29cf4442.exe
2336	da211b361edc5870d5c771be27d2902c30bef4cf7bb4de386f2b63fd29cf4442.exe
2336	da211b361edc5870d5c771be27d2902c30bef4cf7bb4de386f2b63fd29cf4442.exe
2336	da211b361edc5870d5c771be27d2902c30bef4cf7bb4de386f2b63fd29cf4442.exe
2336	da211b361edc5870d5c771be27d2902c30bef4cf7bb4de386f2b63fd29cf4442.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
2336	da211b361edc5870d5c771be27d2902c30bef4cf7bb4de386f2b63fd29cf4442.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
2336	da211b361edc5870d5c771be27d2902c30bef4cf7bb4de386f2b63fd29cf4442.exe
2336	da211b361edc5870d5c771be27d2902c30bef4cf7bb4de386f2b63fd29cf4442.exe
3548	svchcst.exe
3548	svchcst.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2336 wrote to memory of 4800	2336	da211b361edc5870d5c771be27d2902c30bef4cf7bb4de386f2b63fd29cf4442.exe	89
PID 2336 wrote to memory of 5608	2336	da211b361edc5870d5c771be27d2902c30bef4cf7bb4de386f2b63fd29cf4442.exe	90
PID 2336 wrote to memory of 5116	2336	da211b361edc5870d5c771be27d2902c30bef4cf7bb4de386f2b63fd29cf4442.exe	91

C:\Users\Admin\AppData\Local\Temp\da211b361edc5870d5c771be27d2902c30bef4cf7bb4de386f2b63fd29cf4442.exe
"C:\Users\Admin\AppData\Local\Temp\da211b361edc5870d5c771be27d2902c30bef4cf7bb4de386f2b63fd29cf4442.exe"
1⤵
- Creates a file in the Startup directory
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: RenamesItself
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2336
- 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.
  - System Location Discovery: System Language Discovery
  PID:4800
- 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.
  - System Location Discovery: System Language Discovery
  PID:5608
- 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.
  - System Location Discovery: System Language Discovery
  PID:5116

C:\Users\Admin\AppData\Roaming\Microsoft\svchcst.exe
C:\Users\Admin\AppData\Roaming\Microsoft\svchcst.exe
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
PID:3548

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

Visual Basic

T1059.005

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

Config.ini

Path C:\Users\Admin\AppData\Roaming\Microsoft\Config.ini
Size 92B
SHA256 7bfcc2f0d3c25f895eac6676d4ce9f16713149206980fb97f4aa4272e82ed2b8
MD5 616ffedca89dfde66c19c781ec4933c5
SHA1 05d28ae3243fbaed0b925f218c1c7c71a5dbbca1
SHA512 8a6fa82b124203512e1ed3d4ad037df7a3c2ec3d8f1db6b5d4e591ccb08c1c44b2a8589d769697c0f1ea35e711b38eb8fbab3fa3a24be99d099782b9c6c25a8f
MD5 SHA1 SHA512

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VBS3.vbs

Path C:\Users\Admin\AppData\Roaming\Microsoft\VBS3.vbs
Size 753B
SHA256 7fbe66f53dec7f247c30187e2685319631e85f4bef61110c3a0dccf8f67a3e54
MD5 bd5b4f96a3254190d50cebfd3f4d7ea9
SHA1 fd1f53caedf24b7d913998f48fb5b322eb3dc733
SHA512 48c2039672c7cada03966d46d29f1fc30a37becf92c7d745b111d06e3fbe6c544815ef3a8173a4718fe8b49028c3007e7c1f8b0cd91e86c4d262f4c05a1240be
TLSH
T17C01C000DD4CC659503553B62432E40BF39A1453A3036CD8BC9AD1712F7075C9CB4A32
MD5 SHA1 SHA512 TLSH

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svchcst.exe

Path C:\Users\Admin\AppData\Roaming\Microsoft\svchcst.exe
Size 1.2MB
SHA256 d6ade5b84ecb8edb04b5860cd4a8b67f7641fa4a0385f9767e076fdbe44b1b0c
MD5 ad9b1af57b23e8a336fd819715957b54
SHA1 3905aed075c0b6bf7c4236ac5cd0d24bcd7b6b0f
SHA512 313e46294d25ace24167934c4b62d8e9e0fd64b96955839f08fbab0a0d3ab8414f05e9f224cba2a801763f78df5fe0872fbec0a54edba0555b84831fa634d9d1
SSDEEP 24576:BjtC6RxD1hMbipXcvvX8wirRtcuO2hl5GdYquD+oHlG4Xt4JgPJCj8zDVpJEQ:BjtxttI2vquflG4XtggPJMjQ
TLSH
T19B45AE23F18280F2C728113118FB1735FEB897565A70CA9BE7D4DE781D63251AB6B21E
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/2336-0-0x0000000000400000-0x0000000000576000-memory.dmp

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memory/2336-30-0x0000000000400000-0x0000000000576000-memory.dmp

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memory/2336-33-0x0000000000400000-0x0000000000576000-memory.dmp

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memory/2336-36-0x0000000000400000-0x0000000000576000-memory.dmp

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memory/2336-40-0x0000000000400000-0x0000000000576000-memory.dmp

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memory/2336-43-0x0000000000400000-0x0000000000576000-memory.dmp

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memory/2336-46-0x0000000000400000-0x0000000000576000-memory.dmp

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memory/2336-49-0x0000000000400000-0x0000000000576000-memory.dmp

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