flyagent | 8b405babdd7993d80bce30bc180457946b5ddf614510f9a1372c647ccec3278c

Analysis

max time kernel
90s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20260130-en
resource tags

arch:x64arch:x86image:win10v2004-20260130-enlocale:en-usos:windows10-2004-x64systemwindows
submitted
28/04/2026, 14:59

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General

Target
8b405babdd7993d80bce30bc180457946b5ddf614510f9a1372c647ccec3278c.exe
Size 1.3MB
Sample260428-sc6qdabs2x
SHA256 8b405babdd7993d80bce30bc180457946b5ddf614510f9a1372c647ccec3278c
MD5 897d5f47c3c3f514030ebac05cc8db8c
SHA1 5d3ac8533ca2bbb379c547ca852985d4d6b4207b
SHA512 155d421a17a1e46467b96942487a2214d8a850a796fb60ddaa1e8fa6c379f79fcd34d3d77ff6a47fb42b9cd3f44998498c2ae8c9f04a4f7c383aac0d711409f4
SSDEEP 24576:WBS9qQEK6QywlBqH82QoXFkrzkmmlSgRDko0lG4Z8r7Qfd7iu5P:WZaClSFlG4ZM7QlV9
TLSH
T16C557C13F692C0F1E61C227124FB6339BE7497450A71CACBE794DD791C32691ABA720E
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/4304-12-0x0000000000400000-0x0000000000551000-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-1-5-21-1609746302-1884177235-1125644204-1000\Control Panel\International\Geo\Nation	8b405babdd7993d80bce30bc180457946b5ddf614510f9a1372c647ccec3278c.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 4 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	8b405babdd7993d80bce30bc180457946b5ddf614510f9a1372c647ccec3278c.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	WScript.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1609746302-1884177235-1125644204-1000_Classes\Local Settings	8b405babdd7993d80bce30bc180457946b5ddf614510f9a1372c647ccec3278c.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
4304	8b405babdd7993d80bce30bc180457946b5ddf614510f9a1372c647ccec3278c.exe
4304	8b405babdd7993d80bce30bc180457946b5ddf614510f9a1372c647ccec3278c.exe
4304	8b405babdd7993d80bce30bc180457946b5ddf614510f9a1372c647ccec3278c.exe
4304	8b405babdd7993d80bce30bc180457946b5ddf614510f9a1372c647ccec3278c.exe
4304	8b405babdd7993d80bce30bc180457946b5ddf614510f9a1372c647ccec3278c.exe
4304	8b405babdd7993d80bce30bc180457946b5ddf614510f9a1372c647ccec3278c.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
4304	8b405babdd7993d80bce30bc180457946b5ddf614510f9a1372c647ccec3278c.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4304	8b405babdd7993d80bce30bc180457946b5ddf614510f9a1372c647ccec3278c.exe
4304	8b405babdd7993d80bce30bc180457946b5ddf614510f9a1372c647ccec3278c.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4304 wrote to memory of 5776	4304	8b405babdd7993d80bce30bc180457946b5ddf614510f9a1372c647ccec3278c.exe	83
PID 4304 wrote to memory of 4540	4304	8b405babdd7993d80bce30bc180457946b5ddf614510f9a1372c647ccec3278c.exe	84
PID 4304 wrote to memory of 4364	4304	8b405babdd7993d80bce30bc180457946b5ddf614510f9a1372c647ccec3278c.exe	85

C:\Users\Admin\AppData\Local\Temp\8b405babdd7993d80bce30bc180457946b5ddf614510f9a1372c647ccec3278c.exe
"C:\Users\Admin\AppData\Local\Temp\8b405babdd7993d80bce30bc180457946b5ddf614510f9a1372c647ccec3278c.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:4304
- 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:5776
- 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:4540
- 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:4364

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

Replay Monitor

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Downloads

VBS3.vbs

Path C:\Users\Admin\AppData\Roaming\Microsoft\VBS3.vbs
Size 753B
SHA256 54f10e6286d78d86dd8fe77e6a0c9045e83999bc9568bd94f7a49bfdc64446dd
MD5 d13f2f261c94c6e24b35f775bdf47a27
SHA1 f5489008852849883f7ba1cf8694b85f41c76c4c
SHA512 1f75a54340773086f4429bda1471e5b86ca5023663d46acfec37f1e4510ac7a7c47d0bcd95a3f1c2f24f0f7bee920e2ba33b0804e81c9a8e758d08f195300776
TLSH
T1EB01CB10ED8C8258603957B92432A44EE7EA2457A3039CE9B999D0652FB076CCCB4A32
MD5 SHA1 SHA512 TLSH

Submit Download

memory/4304-12-0x0000000000400000-0x0000000000551000-memory.dmp

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memory/4304-13-0x0000000000A40000-0x0000000000AEF000-memory.dmp

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