floxif | 72c6cd8143d74905d77ec1d21b4bf907cddaa20abc09af9eb723113d828541e0

Analysis

max time kernel
94s
max time network
140s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
26-12-2024 23:34

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General

Target

72c6cd8143d74905d77ec1d21b4bf907cddaa20abc09af9eb723113d828541e0.exe
Size

874KB
MD5

68b407588b192c9e90ac75c8007707da
SHA1

e05f539c073f7f0e1a99ccf953f2e213fc63c054
SHA256

72c6cd8143d74905d77ec1d21b4bf907cddaa20abc09af9eb723113d828541e0
SHA512

c3ec94e08a4de34ef9d27554060c33655fc41b5e4a8a55b130a9acf74368cdb5343d4a7d47116c1520dd5090479a0f0dac50d574d714ce8049c1476c96bbb72f
SSDEEP

12288:rsEPciMysMpbtB8511ACuPBLL3+NK/q0QBjvrEH7Is:w8FsMBte5CPBLLu50SrEH77

Score

10^/10

floxif backdoor discovery persistence privilege_escalation 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
behavioral2/files/0x000c000000023ba7-1.dat	floxif

Event Triggered Execution: AppInit DLLs 1 TTPs
Adversaries may establish persistence and/or elevate privileges by executing malicious content triggered by AppInit DLLs loaded into processes.
persistence privilege_escalation

AppInit DLLs
T1546.010

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral2/files/0x000c000000023ba7-1.dat	acprotect

Loads dropped DLL 3 IoCs

pid	Process
3928	72c6cd8143d74905d77ec1d21b4bf907cddaa20abc09af9eb723113d828541e0.exe
1680	WerFault.exe
1388	WerFault.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000c000000023ba7-1.dat	upx
behavioral2/memory/3928-4-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral2/memory/3928-11-0x0000000010000000-0x0000000010030000-memory.dmp	upx

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\System\symsrv.dll	72c6cd8143d74905d77ec1d21b4bf907cddaa20abc09af9eb723113d828541e0.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1388	3928	WerFault.exe	81

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	72c6cd8143d74905d77ec1d21b4bf907cddaa20abc09af9eb723113d828541e0.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3928	72c6cd8143d74905d77ec1d21b4bf907cddaa20abc09af9eb723113d828541e0.exe

C:\Users\Admin\AppData\Local\Temp\72c6cd8143d74905d77ec1d21b4bf907cddaa20abc09af9eb723113d828541e0.exe
"C:\Users\Admin\AppData\Local\Temp\72c6cd8143d74905d77ec1d21b4bf907cddaa20abc09af9eb723113d828541e0.exe"
1⤵
- Loads dropped DLL
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:3928
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3928 -s 548
  2⤵
  - Loads dropped DLL
  - Program crash
  PID:1388

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 3928 -ip 3928
1⤵
- Loads dropped DLL
PID:1680

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Event Triggered Execution

T1546

AppInit DLLs

T1546.010

Privilege Escalation

Event Triggered Execution

T1546

AppInit DLLs

T1546.010

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

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

Filesize
67KB

MD5
7574cf2c64f35161ab1292e2f532aabf

SHA1
14ba3fa927a06224dfe587014299e834def4644f

SHA256
de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085

SHA512
4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

Download Submit
memory/3928-4-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/3928-6-0x0000000000663000-0x0000000000664000-memory.dmp

Filesize
4KB

Download
memory/3928-9-0x0000000000660000-0x000000000094F000-memory.dmp

Filesize
2.9MB

Download
memory/3928-11-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download