floxif | b5dcf07c19fbe94c163a1c39cd3a361f05b01c211a7958314c29f526d25025e4

Analysis

max time kernel
120s
max time network
120s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
19/01/2025, 04:32

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General

Target

b5dcf07c19fbe94c163a1c39cd3a361f05b01c211a7958314c29f526d25025e4.exe
Size

234KB
MD5

e36ec77c1e7e16256e09e0ea82ed7e93
SHA1

07cf0f812eaa1acff1ccda40603a9d5c39344e73
SHA256

b5dcf07c19fbe94c163a1c39cd3a361f05b01c211a7958314c29f526d25025e4
SHA512

617063cad30c29ebb9c4340f2736184150a4566373e2ff6bb0ed4028bb987e2729d505fec9e9cd65772850f2fad2da3cf8a65559a8e7e3ca58cc2b296b02d65f
SSDEEP

3072:uwzvOYT95YP/aKavT/DvbEvhnI2B+flkL7OjUuxGftPyhdY55s2ZUuyNFhyzzZiL:b9iP/aK2Wn/B+/kBV+UdvrEFp7hKA

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/0x000a00000001225c-1.dat	floxif

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral1/files/0x000a00000001225c-1.dat	acprotect

Loads dropped DLL 1 IoCs

pid	Process
2284	b5dcf07c19fbe94c163a1c39cd3a361f05b01c211a7958314c29f526d25025e4.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral1/files/0x000a00000001225c-1.dat	upx
behavioral1/memory/2284-3-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral1/memory/2284-7-0x0000000010000000-0x0000000010030000-memory.dmp	upx

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\System\symsrv.dll	b5dcf07c19fbe94c163a1c39cd3a361f05b01c211a7958314c29f526d25025e4.exe

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	b5dcf07c19fbe94c163a1c39cd3a361f05b01c211a7958314c29f526d25025e4.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2284	b5dcf07c19fbe94c163a1c39cd3a361f05b01c211a7958314c29f526d25025e4.exe

C:\Users\Admin\AppData\Local\Temp\b5dcf07c19fbe94c163a1c39cd3a361f05b01c211a7958314c29f526d25025e4.exe
"C:\Users\Admin\AppData\Local\Temp\b5dcf07c19fbe94c163a1c39cd3a361f05b01c211a7958314c29f526d25025e4.exe"
1⤵
- Loads dropped DLL
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:2284

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
67KB

MD5
7574cf2c64f35161ab1292e2f532aabf

SHA1
14ba3fa927a06224dfe587014299e834def4644f

SHA256
de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085

SHA512
4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

Download Submit
memory/2284-3-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/2284-5-0x0000000000C70000-0x0000000000C99000-memory.dmp

Filesize
164KB

Download
memory/2284-7-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download