525a2eb43f2a4c702213723541335dc0391b42a01177e1faf5873e0cb7540ce0

Analysis

max time kernel
146s
max time network
160s
platform
windows10-2004_x64
resource
win10v2004-20240704-en
resource tags

arch:x64arch:x86image:win10v2004-20240704-enlocale:en-usos:windows10-2004-x64system
submitted
28-07-2024 09:54

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General

Target

Tftpd64-4.64-setup.exe
Size

633KB
MD5

044cc568b52ce2e65eb82d3d3b7ffa2f
SHA1

e53df45b9994f7d02b48b0e002d5e06f00535bc6
SHA256

525a2eb43f2a4c702213723541335dc0391b42a01177e1faf5873e0cb7540ce0
SHA512

1ee71ba4ba71faf0f1bc4fc4b3f5292ffef6cfa19d08b169534260daaf2bf99960db364382039f45fb17e44295d9c2473a747779a21cb35375666c08af3ed4be
SSDEEP

12288:slKyxovP4Jw+ULNC0IVfG5IAeKPOFwTM84qpcy+qtv2tSoTqLQby4q:sMyavP4Jhg7IWWFA4qphN28o+LQe4q

Score

7^/10

discovery

Malware Config

Signatures

Executes dropped EXE 1 IoCs

Processes:

Tftpd64.exe

pid process

1188 Tftpd64.exe
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

pid	process
1188	Tftpd64.exe

Drops file in Program Files directory 5 IoCs

Processes:

Tftpd64-4.64-setup.exe

description	ioc	process
File created	C:\Program Files\Tftpd64\tftpd64.exe	Tftpd64-4.64-setup.exe
File created	C:\Program Files\Tftpd64\tftpd32.chm	Tftpd64-4.64-setup.exe
File created	C:\Program Files\Tftpd64\EUPL-EN.pdf	Tftpd64-4.64-setup.exe
File created	C:\Program Files\Tftpd64\tftpd32.ini	Tftpd64-4.64-setup.exe
File created	C:\Program Files\Tftpd64\uninstall.exe	Tftpd64-4.64-setup.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 1 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

Processes:

Tftpd64-4.64-setup.exe

description ioc process

Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language Tftpd64-4.64-setup.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Tftpd64.exe

description pid process

Token: 33 1188 Tftpd64.exe
Token: SeIncBasePriorityPrivilege 1188 Tftpd64.exe
Suspicious use of FindShellTrayWindow 3 IoCs

Processes:

Tftpd64.exe

pid process

1188 Tftpd64.exe
1188 Tftpd64.exe
1188 Tftpd64.exe
Suspicious use of SendNotifyMessage 2 IoCs

Processes:

Tftpd64.exe

pid process

1188 Tftpd64.exe
1188 Tftpd64.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Tftpd64-4.64-setup.exe

description	pid	process
Token: 33	1188	Tftpd64.exe
Token: SeIncBasePriorityPrivilege	1188	Tftpd64.exe

pid	process
1188	Tftpd64.exe
1188	Tftpd64.exe
1188	Tftpd64.exe

pid	process
1188	Tftpd64.exe
1188	Tftpd64.exe

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

Tftpd64-4.64-setup.exe

description	pid	process	target process
PID 4416 wrote to memory of 1188	4416	Tftpd64-4.64-setup.exe	Tftpd64.exe
PID 4416 wrote to memory of 1188	4416	Tftpd64-4.64-setup.exe	Tftpd64.exe

C:\Users\Admin\AppData\Local\Temp\Tftpd64-4.64-setup.exe
"C:\Users\Admin\AppData\Local\Temp\Tftpd64-4.64-setup.exe"
1⤵
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4416
- C:\Program Files\Tftpd64\Tftpd64.exe
  "C:\Program Files\Tftpd64\Tftpd64.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  PID:1188

Network

MITRE ATT&CK Enterprise v15

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

C:\Program Files\Tftpd64\Tftpd32.ini

Filesize
616B

MD5
c973075d00b0bf2d5c4cb18155ad92fb

SHA1
0b1d0a6c40da12b81e6bab942a6631f19e18f1fc

SHA256
0c00cbdae4e3f2f430ca803e2e08bb3cbba4e83cf9024dbb64da212b8034e60d

SHA512
b987aa69a90fc14d0c4e7ebcd7db6a3c9580f705ce6753104163017975b4e8a1f09c302123c83421943e33a591b509f8edc398a00fe4932132d32c169db34fc9

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C:\Program Files\Tftpd64\tftpd64.exe

Filesize
383KB

MD5
3c1e3215acc69f06f044802ed4695333

SHA1
ea34a6bad04bc5a1fcb494668347cd302557f327

SHA256
34de53b43c32e3ed5231a57683103acad1aebeef08309cf8e770c27acc90e4e7

SHA512
82ed2edbb7286aac00b946f7f4c79e59079994fe8385e961abd1291440fdf26e14c724943eaabebb517e921ece4b384b9d50905898d71f2efaa427be7082d2d0

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