floxif | 9dbf8090bef3225eb8839530793bc595441e4b4c9ef6944756cbb19a375e2948

Analysis

max time kernel
15s
max time network
16s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
26/12/2024, 01:33 UTC

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General

Target

9dbf8090bef3225eb8839530793bc595441e4b4c9ef6944756cbb19a375e2948N.exe
Size

2.5MB
MD5

c3bd4545eb50e05ec43597e749e6f940
SHA1

65621231d4289ca3125d6113abab660dabf1e7dd
SHA256

9dbf8090bef3225eb8839530793bc595441e4b4c9ef6944756cbb19a375e2948
SHA512

a7f369b807ec51393f6ffe36ca1dea330c846798e12100b9b77ebefe75c3d680bc4d16774e26ae45ae8c9f702fe5fe21d3d43e66ca80cf07ba7aaa6789e2daa0
SSDEEP

49152:FB1S7nZzOH8s343A/aT9C0DZonjpy5aoSKrBda7xJ1qX:6Ocs34Q/WyuBda7xJUX

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/0x0007000000012117-1.dat	floxif

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral1/files/0x0007000000012117-1.dat	acprotect

Loads dropped DLL 1 IoCs

pid	Process
2696	9dbf8090bef3225eb8839530793bc595441e4b4c9ef6944756cbb19a375e2948N.exe

Network Service Discovery 1 TTPs 3 IoCs

Attempt to gather information on host's network.

discovery

Network Service Discovery

T1046

pid	Process
2104	arp.exe
2368	arp.exe
2372	arp.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral1/files/0x0007000000012117-1.dat	upx
behavioral1/memory/2696-3-0x0000000010000000-0x0000000010033000-memory.dmp	upx
behavioral1/memory/2696-5-0x0000000010000000-0x0000000010033000-memory.dmp	upx

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\System\symsrv.dll	9dbf8090bef3225eb8839530793bc595441e4b4c9ef6944756cbb19a375e2948N.exe

System Location Discovery: System Language Discovery 1 TTPs 3 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	9dbf8090bef3225eb8839530793bc595441e4b4c9ef6944756cbb19a375e2948N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	arp.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	arp.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2696	9dbf8090bef3225eb8839530793bc595441e4b4c9ef6944756cbb19a375e2948N.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2696 wrote to memory of 2104	2696	9dbf8090bef3225eb8839530793bc595441e4b4c9ef6944756cbb19a375e2948N.exe	30
PID 2696 wrote to memory of 2104	2696	9dbf8090bef3225eb8839530793bc595441e4b4c9ef6944756cbb19a375e2948N.exe	30
PID 2696 wrote to memory of 2104	2696	9dbf8090bef3225eb8839530793bc595441e4b4c9ef6944756cbb19a375e2948N.exe	30
PID 2696 wrote to memory of 2104	2696	9dbf8090bef3225eb8839530793bc595441e4b4c9ef6944756cbb19a375e2948N.exe	30
PID 2696 wrote to memory of 2368	2696	9dbf8090bef3225eb8839530793bc595441e4b4c9ef6944756cbb19a375e2948N.exe	32
PID 2696 wrote to memory of 2368	2696	9dbf8090bef3225eb8839530793bc595441e4b4c9ef6944756cbb19a375e2948N.exe	32
PID 2696 wrote to memory of 2368	2696	9dbf8090bef3225eb8839530793bc595441e4b4c9ef6944756cbb19a375e2948N.exe	32
PID 2696 wrote to memory of 2368	2696	9dbf8090bef3225eb8839530793bc595441e4b4c9ef6944756cbb19a375e2948N.exe	32

C:\Users\Admin\AppData\Local\Temp\9dbf8090bef3225eb8839530793bc595441e4b4c9ef6944756cbb19a375e2948N.exe
"C:\Users\Admin\AppData\Local\Temp\9dbf8090bef3225eb8839530793bc595441e4b4c9ef6944756cbb19a375e2948N.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:2696
- C:\Windows\SysWOW64\arp.exe
  arp -a
  2⤵
  - Network Service Discovery
  - System Location Discovery: System Language Discovery
  PID:2104
- C:\Windows\SysWOW64\arp.exe
  arp -s 10.127.0.1 6e-1a-08-43-d9-db
  2⤵
  - Network Service Discovery
  - System Location Discovery: System Language Discovery
  PID:2368
- C:\Windows\SysWOW64\arp.exe
  arp -s 10.127.255.255 47-4b-be-33-f6-c5
  2⤵
  - Network Service Discovery
  PID:2372

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/2696-3-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

Download
memory/2696-5-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

Download