floxif | 130d39f3fe6df2df5eb2ebb038cd52aa2aff99ecf2089b1016af86f9bbb480d0

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
30-01-2025 15:46

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General

Target

130d39f3fe6df2df5eb2ebb038cd52aa2aff99ecf2089b1016af86f9bbb480d0.dll
Size

1.1MB
MD5

559f096c9c19d2468327ab3094a64310
SHA1

62ef10826091502ee13c1a427f63f61bb186f466
SHA256

130d39f3fe6df2df5eb2ebb038cd52aa2aff99ecf2089b1016af86f9bbb480d0
SHA512

7b971aae9cca181e4742c7497aefd10320ccd86d73c1b66c0658e15f3e30f9f945ce8c5cb56e70b02b2319243daae70063bb026f6ba001401b5baeb2dd68aa9e
SSDEEP

24576:V2mj42MEVQPGEorkSYcuX/7DkbSrj/qtoT/cgB8SnLyaP:xjnMEVQuFkSEvkurrqtoTkgCSneU

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/0x00080000000120f9-1.dat	floxif

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral1/files/0x00080000000120f9-1.dat	acprotect

Loads dropped DLL 1 IoCs

pid	Process
2580	rundll32.exe

Network Service Discovery 1 TTPs 1 IoCs

Attempt to gather information on host's network.

discovery

Network Service Discovery

T1046

pid	Process
1216	arp.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral1/files/0x00080000000120f9-1.dat	upx
behavioral1/memory/2580-3-0x0000000010000000-0x0000000010033000-memory.dmp	upx
behavioral1/memory/2580-6-0x0000000010000000-0x0000000010033000-memory.dmp	upx

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\System\symsrv.dll	rundll32.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	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2580	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1736 wrote to memory of 2580	1736	rundll32.exe	30
PID 1736 wrote to memory of 2580	1736	rundll32.exe	30
PID 1736 wrote to memory of 2580	1736	rundll32.exe	30
PID 1736 wrote to memory of 2580	1736	rundll32.exe	30
PID 1736 wrote to memory of 2580	1736	rundll32.exe	30
PID 1736 wrote to memory of 2580	1736	rundll32.exe	30
PID 1736 wrote to memory of 2580	1736	rundll32.exe	30

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\130d39f3fe6df2df5eb2ebb038cd52aa2aff99ecf2089b1016af86f9bbb480d0.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1736
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\130d39f3fe6df2df5eb2ebb038cd52aa2aff99ecf2089b1016af86f9bbb480d0.dll,#1
  2⤵
  - Loads dropped DLL
  - Drops file in Program Files directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:2580
- - C:\Windows\SysWOW64\arp.exe
    arp -a
    3⤵
    - Network Service Discovery
    PID:1216

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
1458e1451cf701b363c99cfb81317789

SHA1
0dc90bc9a49f5d973e1649c0db09087ef3e0bb3f

SHA256
ace427ef87c8c1a9457e122c787d0b0c3b5a04d45f6df4d9a337e215def47c13

SHA512
b9ac9af373a93c6db20000bfe4d8c85a9df0c97a15d4989501f719a84f0cef2b72d3697a9a8b927b1cdc9a687cde6f1603fc9e5ba6bc4f63d461a8fadfd67e34

Download Submit
memory/2580-3-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

Download
memory/2580-6-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

Download