flyagent | 64f6f815cdb0fa421b6b2267ebd9d265c5273fd9679624646eaf42a4e7cecc0d

Analysis

max time kernel
149s
max time network
150s
platform
windows11-21h2_x64
resource
win11-20260130-en
resource tags

arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows
submitted
06/05/2026, 07:55

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General

Target
64f6f815cdb0fa421b6b2267ebd9d265c5273fd9679624646eaf42a4e7cecc0d.exe
Size 1.1MB
Sample260506-jsfdpads71
SHA256 64f6f815cdb0fa421b6b2267ebd9d265c5273fd9679624646eaf42a4e7cecc0d
MD5 7fbac7f114227c762dd47bf622f110b5
SHA1 8e417284cea4246c32124f552f21c62152f7f98b
SHA512 4ac765259b848396e80c12fe05d33b3799e35d50f34dab7c88d6043284cff50381d5fa4d43586bb81d84a0e1d358af21a2660e7dff57691b80e9f036a2218f80
SSDEEP 24576:aH0dl8myX9Bg42QoXFkrzkmplSgRDYo0lG4Z8r7Qfbkiu5Qt:acallSllG4ZM7QzMU
TLSH
T144458D13F292C0F1E61C227124FB6739BE749B450A71CAC7E794DD791C32691ABA720E
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 7 IoCs

resource	yara_rule
behavioral2/memory/5060-0-0x0000000000400000-0x000000000055F000-memory.dmp	flyagent
behavioral2/memory/5060-12-0x0000000000400000-0x000000000055F000-memory.dmp	flyagent
behavioral2/memory/5060-15-0x0000000000400000-0x000000000055F000-memory.dmp	flyagent
behavioral2/files/0x000b000000029ef3-16.dat	flyagent
behavioral2/memory/5568-19-0x0000000000400000-0x000000000055F000-memory.dmp	flyagent
behavioral2/memory/1108-20-0x0000000000400000-0x000000000055F000-memory.dmp	flyagent
behavioral2/memory/5568-21-0x0000000000400000-0x000000000055F000-memory.dmp	flyagent

Deletes itself 1 IoCs

pid	Process
5568	svchcst.exe

Executes dropped EXE 2 IoCs

pid	Process
1108	svchcst.exe
5568	svchcst.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	64f6f815cdb0fa421b6b2267ebd9d265c5273fd9679624646eaf42a4e7cecc0d.exe
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	svchcst.exe

Modifies registry class 3 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	WScript.exe
Key created	\REGISTRY\USER\S-1-5-21-650218026-1419908266-2856590055-1000_Classes\Local Settings	64f6f815cdb0fa421b6b2267ebd9d265c5273fd9679624646eaf42a4e7cecc0d.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	WScript.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
5060	64f6f815cdb0fa421b6b2267ebd9d265c5273fd9679624646eaf42a4e7cecc0d.exe
5060	64f6f815cdb0fa421b6b2267ebd9d265c5273fd9679624646eaf42a4e7cecc0d.exe
5060	64f6f815cdb0fa421b6b2267ebd9d265c5273fd9679624646eaf42a4e7cecc0d.exe
5060	64f6f815cdb0fa421b6b2267ebd9d265c5273fd9679624646eaf42a4e7cecc0d.exe
5568	svchcst.exe
5568	svchcst.exe
5568	svchcst.exe
5568	svchcst.exe
5568	svchcst.exe
5568	svchcst.exe
5568	svchcst.exe
5568	svchcst.exe
5568	svchcst.exe
5568	svchcst.exe
5568	svchcst.exe
5568	svchcst.exe
5568	svchcst.exe
5568	svchcst.exe
5568	svchcst.exe
5568	svchcst.exe
5568	svchcst.exe
5568	svchcst.exe
5568	svchcst.exe
5568	svchcst.exe
5568	svchcst.exe
5568	svchcst.exe
5568	svchcst.exe
5568	svchcst.exe
5568	svchcst.exe
5568	svchcst.exe
5568	svchcst.exe
5568	svchcst.exe
5568	svchcst.exe
5568	svchcst.exe
5568	svchcst.exe
5568	svchcst.exe
5568	svchcst.exe
5568	svchcst.exe
5568	svchcst.exe
5568	svchcst.exe
5568	svchcst.exe
5568	svchcst.exe
5568	svchcst.exe
5568	svchcst.exe
5568	svchcst.exe
5568	svchcst.exe
5568	svchcst.exe
5568	svchcst.exe
5568	svchcst.exe
5568	svchcst.exe
5568	svchcst.exe
5568	svchcst.exe
5568	svchcst.exe
5568	svchcst.exe
5568	svchcst.exe
5568	svchcst.exe
5568	svchcst.exe
5568	svchcst.exe
5568	svchcst.exe
5568	svchcst.exe
5568	svchcst.exe
5568	svchcst.exe
5568	svchcst.exe
5568	svchcst.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
5060	64f6f815cdb0fa421b6b2267ebd9d265c5273fd9679624646eaf42a4e7cecc0d.exe

Suspicious use of SetWindowsHookEx 6 IoCs

pid	Process
5060	64f6f815cdb0fa421b6b2267ebd9d265c5273fd9679624646eaf42a4e7cecc0d.exe
5060	64f6f815cdb0fa421b6b2267ebd9d265c5273fd9679624646eaf42a4e7cecc0d.exe
5568	svchcst.exe
5568	svchcst.exe
1108	svchcst.exe
1108	svchcst.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 5060 wrote to memory of 6080	5060	64f6f815cdb0fa421b6b2267ebd9d265c5273fd9679624646eaf42a4e7cecc0d.exe	78
PID 5060 wrote to memory of 5812	5060	64f6f815cdb0fa421b6b2267ebd9d265c5273fd9679624646eaf42a4e7cecc0d.exe	79
PID 6080 wrote to memory of 1108	6080	WScript.exe	81
PID 5812 wrote to memory of 5568	5812	WScript.exe	82

C:\Users\Admin\AppData\Local\Temp\64f6f815cdb0fa421b6b2267ebd9d265c5273fd9679624646eaf42a4e7cecc0d.exe
"C:\Users\Admin\AppData\Local\Temp\64f6f815cdb0fa421b6b2267ebd9d265c5273fd9679624646eaf42a4e7cecc0d.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:5060
- 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
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:6080
- - C:\Users\Admin\AppData\Roaming\Microsoft\svchcst.exe
    "C:\Users\Admin\AppData\Roaming\Microsoft\svchcst.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    PID:1108
- 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
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:5812
- - C:\Users\Admin\AppData\Roaming\Microsoft\svchcst.exe
    "C:\Users\Admin\AppData\Roaming\Microsoft\svchcst.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of SetWindowsHookEx
    PID:5568

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 cee66905a1b4829471e624a0317834e5b9eed2841c054f147cbbb1123a35da6d
MD5 a0b41cdb6455e2a1547cc741e6bdacfa
SHA1 ede3690ce56a141f031984093e503e7244c60ef2
SHA512 92c936d77898b34500cdb8e63e7aef376f5412700c4d042cdc6f305a3e06fdbda2e55377c7d52985f46a0d978cef1316ce173b72f8a6dff1cc7fddddc838309a
TLSH
T12C01F410DD4CC25C503543B62532D40EF7EE1557E3039CD5B895D0612F707688CB4A37
MD5 SHA1 SHA512 TLSH

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svchcst.exe

Path C:\Users\Admin\AppData\Roaming\Microsoft\svchcst.exe
Size 1.1MB
SHA256 21c71670647c9a5712fd834a2a5915615bf188b954f9e79750baae955f961b66
MD5 a76bc3a462cfdb506a86a6681d29a419
SHA1 ff535e76b8362ec92034eb338e41312737b10ef1
SHA512 b75186c29ff9edd121f539e71722d818d8ac42c33a5630718f93bd146e6f128d123548d113161416339d11da49c68f08d9a4680db06eb795ec88a693ddf46d30
SSDEEP 24576:aH0dl8myX9Bg42QoXFkrzkmplSgRDYo0lG4Z8r7Qfbkiu5Qe:acallSllG4ZM7QzMb
TLSH
T18D458D13F292C0F1E61C227124FB6739BE749B450A71CAC7E794DD791C32691ABA720E
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/1108-20-0x0000000000400000-0x000000000055F000-memory.dmp

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memory/5060-0-0x0000000000400000-0x000000000055F000-memory.dmp

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memory/5060-12-0x0000000000400000-0x000000000055F000-memory.dmp

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memory/5060-15-0x0000000000400000-0x000000000055F000-memory.dmp

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memory/5568-19-0x0000000000400000-0x000000000055F000-memory.dmp

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memory/5568-21-0x0000000000400000-0x000000000055F000-memory.dmp

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