flyagent | c9452793037e50cc713349f23bfacc2fb5da05a95342a62cf44559c57088c3d8

General

Target
c9452793037e50cc713349f23bfacc2fb5da05a95342a62cf44559c57088c3d8.exe
Size 1.3MB
Sample261014-kt2trafd29
SHA256 c9452793037e50cc713349f23bfacc2fb5da05a95342a62cf44559c57088c3d8
MD5 96f2b04f0750d7bc165ffd752407d073
SHA1 9d16dbc2aeeb126b3f8758d9aed2428e206cd5bf
SHA512 9a5fc5d50b52693cb64e1b1369cbd541d15596e012f35e3a352f4958802af687a3c0e0dcb59adafa6e14244bccb2a5a42f50a5f65ca8795d66ec01b78c392566
SSDEEP 24576:WBS9qQEK6QywlBqH82QoXFkrzkmmlSgRDko0lG4Z8r7Qfd7iu5Q:WZaClSFlG4ZM7QlVO
TLSH
T1CC557C13F692C0F1E61C227124FB6339BE7497450A71CACBE794DD791C32691ABA720E
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

backdoor discovery execution flyagent

Malware Config

Signatures

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

Detects FlyAgent Backdoor 1 IoCs

resource	yara_rule
behavioral2/memory/1096-17-0x0000000000400000-0x0000000000551000-memory.dmp	flyagent

Executes a VBScript file via the Windows Script Host. 1 TTPs 2 IoCs

execution

Visual Basic

T1059.005

pid	Process
5500	WScript.exe
5488	WScript.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Reads the TCP/IP host and domain name from the registry 1 TTPs 4 IoCs

The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.

discovery

System Network Configuration Discovery

T1016

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Hostname	WScript.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Domain	WScript.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Hostname	WScript.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Domain	WScript.exe

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	c9452793037e50cc713349f23bfacc2fb5da05a95342a62cf44559c57088c3d8.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-1-5-21-53044966-3830981193-2402648431-1000_Classes\Local Settings	c9452793037e50cc713349f23bfacc2fb5da05a95342a62cf44559c57088c3d8.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1096	c9452793037e50cc713349f23bfacc2fb5da05a95342a62cf44559c57088c3d8.exe
1096	c9452793037e50cc713349f23bfacc2fb5da05a95342a62cf44559c57088c3d8.exe
1096	c9452793037e50cc713349f23bfacc2fb5da05a95342a62cf44559c57088c3d8.exe
1096	c9452793037e50cc713349f23bfacc2fb5da05a95342a62cf44559c57088c3d8.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
1096	c9452793037e50cc713349f23bfacc2fb5da05a95342a62cf44559c57088c3d8.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1096	c9452793037e50cc713349f23bfacc2fb5da05a95342a62cf44559c57088c3d8.exe
1096	c9452793037e50cc713349f23bfacc2fb5da05a95342a62cf44559c57088c3d8.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 1096 wrote to memory of 5500	1096	c9452793037e50cc713349f23bfacc2fb5da05a95342a62cf44559c57088c3d8.exe	89
PID 1096 wrote to memory of 5488	1096	c9452793037e50cc713349f23bfacc2fb5da05a95342a62cf44559c57088c3d8.exe	90

C:\Users\Admin\AppData\Local\Temp\c9452793037e50cc713349f23bfacc2fb5da05a95342a62cf44559c57088c3d8.exe
"C:\Users\Admin\AppData\Local\Temp\c9452793037e50cc713349f23bfacc2fb5da05a95342a62cf44559c57088c3d8.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:1096
- 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.
  - Reads the TCP/IP host and domain name from the registry
  - System Location Discovery: System Language Discovery
  PID:5500
- 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.
  - Reads the TCP/IP host and domain name from the registry
  - System Location Discovery: System Language Discovery
  PID:5488

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

Visual Basic

1

T1059.005

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

System Network Configuration Discovery

1

T1016

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 d6d635c14136176a88638fb6c334558ecd143bf0c630698725f85fc15f274096
MD5 8de216f765d2cc415fa6d8293c814a4a
SHA1 04911c0b484756e59453cd8f1d0e0406d5f729fd
SHA512 8276dcdaf2cdac7d53026ea6b8f679d36b62424e0d18a6c3d9014016bac060765f21d7e8a3fed535ac56b05e4021282445dbeb02c0dee0283e7a3a8649327819
TLSH
T14701FE10DD5C8659613943F63672A44FF7EA1453B343ACD8B989C0A52FB07A89CB4A33
MD5 SHA1 SHA512 TLSH

Submit Download

memory/1096-17-0x0000000000400000-0x0000000000551000-memory.dmp

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Analysis

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