floxif | 163465920fd1a8d28e92b7144be15c67e2d299e7cfe3c188525ab57192845c08

General

Target

163465920fd1a8d28e92b7144be15c67e2d299e7cfe3c188525ab57192845c08.exe
Size

2.5MB
MD5

ef1a6b20bcca4e835952577c6a6a01d6
SHA1

76e95366357f0de070bb29a68869c0f58d7bc33a
SHA256

163465920fd1a8d28e92b7144be15c67e2d299e7cfe3c188525ab57192845c08
SHA512

ea324651087821bc93f187316795156a0a84cd470051a9276db1a6fe64435202c226da27f0cc115719eca990bf505ee7abbc3300e600ecc70b0e43c313eb08e0
SSDEEP

49152:D5ChFIsxUbi++Ze9hDrXpkoam/b6XDI5l8WRv+be1naxRsgt6eqnyjCy:D52FIs2Ie9hnXGoamD6X3WJ7sjsU6S+y

Score

10^/10

floxif backdoor discovery trojan upx

Malware Config

Signatures

Floxif family
floxif
Floxif, Floodfix
Floxif aka FloodFix is a file-changing trojan and backdoor written in C++.
backdoor trojan floxif

Detects Floxif payload 1 IoCs

backdoor

resource	yara_rule
behavioral1/files/0x000c000000012267-1.dat	floxif

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral1/files/0x000c000000012267-1.dat	acprotect

Executes dropped EXE 1 IoCs

pid	Process
676	Notepad3.exe

Loads dropped DLL 2 IoCs

pid	Process
372	163465920fd1a8d28e92b7144be15c67e2d299e7cfe3c188525ab57192845c08.exe
372	163465920fd1a8d28e92b7144be15c67e2d299e7cfe3c188525ab57192845c08.exe

UPX packed file 3 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/files/0x000c000000012267-1.dat	upx
behavioral1/memory/372-3-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral1/memory/372-274-0x0000000010000000-0x0000000010030000-memory.dmp	upx

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\System\symsrv.dll	163465920fd1a8d28e92b7144be15c67e2d299e7cfe3c188525ab57192845c08.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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	163465920fd1a8d28e92b7144be15c67e2d299e7cfe3c188525ab57192845c08.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	372	163465920fd1a8d28e92b7144be15c67e2d299e7cfe3c188525ab57192845c08.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
676	Notepad3.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 372 wrote to memory of 676	372	163465920fd1a8d28e92b7144be15c67e2d299e7cfe3c188525ab57192845c08.exe	30
PID 372 wrote to memory of 676	372	163465920fd1a8d28e92b7144be15c67e2d299e7cfe3c188525ab57192845c08.exe	30
PID 372 wrote to memory of 676	372	163465920fd1a8d28e92b7144be15c67e2d299e7cfe3c188525ab57192845c08.exe	30
PID 372 wrote to memory of 676	372	163465920fd1a8d28e92b7144be15c67e2d299e7cfe3c188525ab57192845c08.exe	30

C:\Users\Admin\AppData\Local\Temp\163465920fd1a8d28e92b7144be15c67e2d299e7cfe3c188525ab57192845c08.exe
"C:\Users\Admin\AppData\Local\Temp\163465920fd1a8d28e92b7144be15c67e2d299e7cfe3c188525ab57192845c08.exe"
1⤵
- Loads dropped DLL
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:372
- C:\Users\Admin\AppData\Local\Temp\Notepad3\Notepad3.exe
  "C:\Users\Admin\AppData\Local\Temp\Notepad3\Notepad3.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetWindowsHookEx
  PID:676

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\Notepad3\Notepad3.ini

Filesize
4KB

MD5
5f7ae552048542a94d992168a985d490

SHA1
5b016ac8a2774905ac6bdc8c5ec79d90a6aa2185

SHA256
72af5f892eea942bcf6da08e6a3c27db22df0efc01da5675d89c352c7ebcaf87

SHA512
491b4cd8c11fdccb67abccf392cc506a6891a39bed1f5b2f2236b6966b8e5f99453e6ec01f1340ccccc43382f81a45a710bf20f6330d33c20e5a260e7fc2e9b8

Download Submit
C:\Users\Admin\AppData\Local\Temp\Notepad3\grepWinNP3.exe

Filesize
1.2MB

MD5
5de94310bdeb110008eee5d5e20c6bb5

SHA1
9c2179c7bcb8e63e6a9110463e9b21170fba5124

SHA256
c0b608681fa4f8b9b87600fe09e73fc091216d1524c5203743d8738aa6238c83

SHA512
8d4159bb0adedbcea8acdb620dada7a092a55e0c969f1dc6435ded8098ed1253374559793cc7c8adfc6a60b5f39e966ccec01208fce3f7b4ee1e1016c720d19c

Download Submit
C:\Users\Admin\AppData\Local\Temp\Notepad3\minipath.exe

Filesize
1.1MB

MD5
37bff3a336486ea2fa08d10cfcee6e1e

SHA1
30bc5c339eddc9b5b7a0e499586e68338d59cdfb

SHA256
3d5bc157a83685357b6ed2cab97cfb0e5d60503deb410c6cf76a4360f2327ad0

SHA512
b95d89c8d940199c401f1347563cc28f650d077489240688bbc0b6beb5b32bbf36daf45c74a7100e4f8f17f2ab8f1224f7097d4e3bfa4c0ce6c4953fb315c9f6

Download Submit
\Program Files\Common Files\System\symsrv.dll

Filesize
67KB

MD5
7574cf2c64f35161ab1292e2f532aabf

SHA1
14ba3fa927a06224dfe587014299e834def4644f

SHA256
de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085

SHA512
4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

Download Submit
\Users\Admin\AppData\Local\Temp\Notepad3\Notepad3.exe

Filesize
4.1MB

MD5
57eb2e970ae2f788591b8c084c7aeedd

SHA1
7e833a4a6ccdc08ccb87c941265789cf26fc770d

SHA256
6e55dfcdee820069e6668c23aa6e9f5ac043923cd4872fdf2f3ce330c0ad4815

SHA512
0c94862344f9f4a4b1b258e31502381f6e9197aafdf7fb6c9db0caf1c628ba89064ade8cf06b8dd3dd0b2057ca8eb357ff5b290e8ff2956da49f78acae3f20ba

Download Submit
memory/372-3-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/372-5-0x0000000000402000-0x0000000000406000-memory.dmp

Filesize
16KB

Download
memory/372-274-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download

Analysis

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