floxif | b415b10da57a83b479f5499f3508ad9c1e8a1fba5cc873b91c152a7c834b8e22

Analysis

max time kernel
135s
max time network
139s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
24-12-2024 06:44

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General

Target

b415b10da57a83b479f5499f3508ad9c1e8a1fba5cc873b91c152a7c834b8e22.exe
Size

230KB
MD5

5777788390d4209f695c08c19be8abb8
SHA1

ca401893f4c9d4a76910f33d17e95dc1693486df
SHA256

b415b10da57a83b479f5499f3508ad9c1e8a1fba5cc873b91c152a7c834b8e22
SHA512

ad63f46255184d8d3dbb0b5e62ce140c199158f15247c2d601192fcda9f1fc4eebf82992b3928f3bb2068b27ae543f29a9e4470ad41d137f833f4cc29a7056f6
SSDEEP

3072:MwW8LMLnlXVMdN3X6ZtLohOxmU6GtqGTUM06qnMfxCFxUs2lQBV+UdE+rECWp7hI:tQLl6H3KjTrvqnyKBV+UdvrEFp7hKMA3

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
behavioral2/files/0x000d000000023af9-1.dat	floxif

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral2/files/0x000d000000023af9-1.dat	acprotect

Loads dropped DLL 1 IoCs

pid	Process
2500	b415b10da57a83b479f5499f3508ad9c1e8a1fba5cc873b91c152a7c834b8e22.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000d000000023af9-1.dat	upx
behavioral2/memory/2500-4-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral2/memory/2500-8-0x0000000010000000-0x0000000010030000-memory.dmp	upx

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\System\symsrv.dll	b415b10da57a83b479f5499f3508ad9c1e8a1fba5cc873b91c152a7c834b8e22.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
4816	2500	WerFault.exe	84
3460	2500	WerFault.exe	84

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	b415b10da57a83b479f5499f3508ad9c1e8a1fba5cc873b91c152a7c834b8e22.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2500	b415b10da57a83b479f5499f3508ad9c1e8a1fba5cc873b91c152a7c834b8e22.exe

C:\Users\Admin\AppData\Local\Temp\b415b10da57a83b479f5499f3508ad9c1e8a1fba5cc873b91c152a7c834b8e22.exe
"C:\Users\Admin\AppData\Local\Temp\b415b10da57a83b479f5499f3508ad9c1e8a1fba5cc873b91c152a7c834b8e22.exe"
1⤵
- Loads dropped DLL
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:2500
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2500 -s 584
  2⤵
  - Program crash
  PID:4816
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2500 -s 636
  2⤵
  - Program crash
  PID:3460

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 2500 -ip 2500
1⤵
PID:2776

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 2500 -ip 2500
1⤵
PID:2652

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

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

Filesize
67KB

MD5
7574cf2c64f35161ab1292e2f532aabf

SHA1
14ba3fa927a06224dfe587014299e834def4644f

SHA256
de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085

SHA512
4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

Download Submit
memory/2500-4-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/2500-6-0x0000000000AC0000-0x0000000000AE5000-memory.dmp

Filesize
148KB

Download
memory/2500-8-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download