floxif | c4e612f3c482feda78f127325af7208ddb5fd23b459bc654501b0a31edd3a88b

Analysis

max time kernel
117s
max time network
117s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
23/12/2024, 18:24

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General

Target

2024-12-23_24f745c3920c3d03c02ed8e5fe485a50_floxif_mafia.exe
Size

272KB
MD5

24f745c3920c3d03c02ed8e5fe485a50
SHA1

e07481d7cd26b1533de5f2ebaad69aff7d68e4d1
SHA256

c4e612f3c482feda78f127325af7208ddb5fd23b459bc654501b0a31edd3a88b
SHA512

7563ff646e44345ed7882a6b91a2b59b19c8db080c27cc09020241aa6ac928a4e27401b2251ba2b72af471a160bebdff1adbfb29a0b0064ba4ae0519cdcdfdb0
SSDEEP

6144:2MMZlyfkrMgDikTEUET+l2AbpLk0cusQvMRlkM4RD/qzMfU2CH:zMZlU5kT1KG2qk0nMRGM4h/qofhI

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/0x0008000000012117-1.dat	floxif

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral1/files/0x0008000000012117-1.dat	acprotect

Loads dropped DLL 1 IoCs

pid	Process
2688	2024-12-23_24f745c3920c3d03c02ed8e5fe485a50_floxif_mafia.exe

Network Service Discovery 1 TTPs 1 IoCs

Attempt to gather information on host's network.

discovery

Network Service Discovery

T1046

pid	Process
2544	arp.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral1/files/0x0008000000012117-1.dat	upx
behavioral1/memory/2688-3-0x0000000010000000-0x0000000010033000-memory.dmp	upx
behavioral1/memory/2688-7-0x0000000010000000-0x0000000010033000-memory.dmp	upx

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\System\symsrv.dll	2024-12-23_24f745c3920c3d03c02ed8e5fe485a50_floxif_mafia.exe

System Location Discovery: System Language Discovery 1 TTPs 2 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	2024-12-23_24f745c3920c3d03c02ed8e5fe485a50_floxif_mafia.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	arp.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2688	2024-12-23_24f745c3920c3d03c02ed8e5fe485a50_floxif_mafia.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2688 wrote to memory of 2544	2688	2024-12-23_24f745c3920c3d03c02ed8e5fe485a50_floxif_mafia.exe	30
PID 2688 wrote to memory of 2544	2688	2024-12-23_24f745c3920c3d03c02ed8e5fe485a50_floxif_mafia.exe	30
PID 2688 wrote to memory of 2544	2688	2024-12-23_24f745c3920c3d03c02ed8e5fe485a50_floxif_mafia.exe	30
PID 2688 wrote to memory of 2544	2688	2024-12-23_24f745c3920c3d03c02ed8e5fe485a50_floxif_mafia.exe	30

C:\Users\Admin\AppData\Local\Temp\2024-12-23_24f745c3920c3d03c02ed8e5fe485a50_floxif_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2024-12-23_24f745c3920c3d03c02ed8e5fe485a50_floxif_mafia.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:2688
- C:\Windows\SysWOW64\arp.exe
  arp -a
  2⤵
  - Network Service Discovery
  - System Location Discovery: System Language Discovery
  PID:2544

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Discovery

T1046

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
71KB

MD5
4fcd7574537cebec8e75b4e646996643

SHA1
efa59bb9050fb656b90d5d40c942fb2a304f2a8b

SHA256
8ea3b17e4b783ffc0bc387b81b823bf87af0d57da74541d88ba85314bb232a5d

SHA512
7f1a7ef64d332a735db82506b47d84853af870785066d29ccaf4fdeab114079a9f0db400e01ba574776a0d652a248658fe1e8f9659cdced19ad6eea09644ea3e

Download Submit
memory/2688-3-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

Download
memory/2688-7-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

Download
memory/2688-5-0x0000000000FE0000-0x0000000001012000-memory.dmp

Filesize
200KB

Download