floxif | c8979eda937db005ab257214717d41aa31de3d6f93750fabea6905ddfe86f973

Analysis

max time kernel
101s
max time network
102s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
25/08/2024, 23:47

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General

Target

29f3f594dc3b8b7ff2743be4db5cd510N.exe
Size

809KB
MD5

29f3f594dc3b8b7ff2743be4db5cd510
SHA1

e5974c9813348734683af5613fa7c6619914f282
SHA256

c8979eda937db005ab257214717d41aa31de3d6f93750fabea6905ddfe86f973
SHA512

bbef8697b7f82cf6bad929dc3f559bd6c103b056247c6f2122aa1a42e5bc500965d2cd704f96dbc925f36f1de7c5e3090f612924950b59e2754dc1d31f09abbd
SSDEEP

24576:bV5s52aTTUJtySrl3RerElTwsI4xUrEH7c0:brnaYySr3iV0

Score

10^/10

floxif backdoor discovery 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/0x00090000000233c8-2.dat	floxif

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral2/files/0x00090000000233c8-2.dat	acprotect

Loads dropped DLL 1 IoCs

pid	Process
3380	29f3f594dc3b8b7ff2743be4db5cd510N.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3380-0-0x00000000006C0000-0x00000000008AD000-memory.dmp	upx
behavioral2/files/0x00090000000233c8-2.dat	upx
behavioral2/memory/3380-5-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral2/memory/3380-11-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral2/memory/3380-10-0x00000000006C0000-0x00000000008AD000-memory.dmp	upx

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\System\symsrv.dll	29f3f594dc3b8b7ff2743be4db5cd510N.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
640	3380	WerFault.exe	83

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	29f3f594dc3b8b7ff2743be4db5cd510N.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3380	29f3f594dc3b8b7ff2743be4db5cd510N.exe

C:\Users\Admin\AppData\Local\Temp\29f3f594dc3b8b7ff2743be4db5cd510N.exe
"C:\Users\Admin\AppData\Local\Temp\29f3f594dc3b8b7ff2743be4db5cd510N.exe"
1⤵
- Loads dropped DLL
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:3380
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3380 -s 656
  2⤵
  - Program crash
  PID:640

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3380 -ip 3380
1⤵
PID:4452

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/3380-0-0x00000000006C0000-0x00000000008AD000-memory.dmp

Filesize
1.9MB

Download
memory/3380-5-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/3380-7-0x0000000000899000-0x000000000089A000-memory.dmp

Filesize
4KB

Download
memory/3380-11-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/3380-10-0x00000000006C0000-0x00000000008AD000-memory.dmp

Filesize
1.9MB

Download