floxif | c91213067b475912cd5378b79ea5cdd03099dba0c227cfa81bdf0e9edcea6a09

Analysis

max time kernel
94s
max time network
103s
platform
windows10-2004_x64
resource
win10v2004-20240704-en
resource tags

arch:x64arch:x86image:win10v2004-20240704-enlocale:en-usos:windows10-2004-x64system
submitted
07/07/2024, 03:28

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General

Target

c91213067b475912cd5378b79ea5cdd03099dba0c227cfa81bdf0e9edcea6a09.exe
Size

441KB
MD5

e00de5eafb10fdffd111b5bbe4b82721
SHA1

96a5029a135f721f1ee2c52fa7a0261a164268f5
SHA256

c91213067b475912cd5378b79ea5cdd03099dba0c227cfa81bdf0e9edcea6a09
SHA512

2e5ac2bb2bb4ab0fb78b8d597bd462f887e568e04ed10c1c4fb808ee75334c6543017c136ba2f3009b3e0ebac3a6a66dc2c2400cb50003b79b646411f52ab612
SSDEEP

12288:boonMw7CEW2nhpDxxJrrMMDMMM6Xg18bMZBjvrEH7Vh:L3hpDxrrMMDMMM65bMHrEH7Vh

Score

10^/10

floxif backdoor trojan upx

Malware Config

Signatures

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/0x000900000002325a-1.dat	floxif

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral2/files/0x000900000002325a-1.dat	acprotect

Loads dropped DLL 1 IoCs

pid	Process
744	c91213067b475912cd5378b79ea5cdd03099dba0c227cfa81bdf0e9edcea6a09.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000900000002325a-1.dat	upx
behavioral2/memory/744-5-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral2/memory/744-9-0x0000000010000000-0x0000000010030000-memory.dmp	upx

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\System\symsrv.dll	c91213067b475912cd5378b79ea5cdd03099dba0c227cfa81bdf0e9edcea6a09.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
1144	744	WerFault.exe	81
1148	744	WerFault.exe	81

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	744	c91213067b475912cd5378b79ea5cdd03099dba0c227cfa81bdf0e9edcea6a09.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
744	c91213067b475912cd5378b79ea5cdd03099dba0c227cfa81bdf0e9edcea6a09.exe

C:\Users\Admin\AppData\Local\Temp\c91213067b475912cd5378b79ea5cdd03099dba0c227cfa81bdf0e9edcea6a09.exe
"C:\Users\Admin\AppData\Local\Temp\c91213067b475912cd5378b79ea5cdd03099dba0c227cfa81bdf0e9edcea6a09.exe"
1⤵
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:744
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 744 -s 632
  2⤵
  - Program crash
  PID:1144
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 744 -s 640
  2⤵
  - Program crash
  PID:1148

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 744 -ip 744
1⤵
PID:2180

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 484 -p 744 -ip 744
1⤵
PID:3424

Network

MITRE ATT&CK Matrix

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/744-5-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/744-6-0x0000000000F91000-0x0000000000F92000-memory.dmp

Filesize
4KB

Download
memory/744-7-0x0000000000F90000-0x0000000000FF1000-memory.dmp

Filesize
388KB

Download
memory/744-9-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download