floxif | ed4e3a26d49cfdfce3c734d35bead1aef612614c1ec6ab7ce4110d936ec2e43c

General

Target

2024-11-23_55d0dadc4feb5873b80d1a61d7a8c622_floxif_mafia.exe
Size

268KB
MD5

55d0dadc4feb5873b80d1a61d7a8c622
SHA1

afff011f61f629d240865389298f60465384f468
SHA256

ed4e3a26d49cfdfce3c734d35bead1aef612614c1ec6ab7ce4110d936ec2e43c
SHA512

1f3162c2dbf1bf040549986d256ba36c835bf8ab5aa22536cd50ae31a1c4385f1aac5412d935b2752be039ccdddb302f2e0e03edf192de67aca5a83abe0a2ce1
SSDEEP

6144:n147gBGl86ggtZEvDQ9u7JaSBV+UdvrEFp7hKcR0:nmIGBggtZEvDQwJnBjvrEH7/R0

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/0x0007000000012119-1.dat	floxif

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral1/files/0x0007000000012119-1.dat	acprotect

Loads dropped DLL 1 IoCs

pid	Process
1792	2024-11-23_55d0dadc4feb5873b80d1a61d7a8c622_floxif_mafia.exe

Enumerates connected drives 3 TTPs 1 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\e:	2024-11-23_55d0dadc4feb5873b80d1a61d7a8c622_floxif_mafia.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral1/files/0x0007000000012119-1.dat	upx
behavioral1/memory/1792-3-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral1/memory/1792-29-0x0000000010000000-0x0000000010030000-memory.dmp	upx

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\System\symsrv.dll	2024-11-23_55d0dadc4feb5873b80d1a61d7a8c622_floxif_mafia.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 2 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	2024-11-23_55d0dadc4feb5873b80d1a61d7a8c622_floxif_mafia.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	NOTEPAD.EXE

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
2944	NOTEPAD.EXE

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1792	2024-11-23_55d0dadc4feb5873b80d1a61d7a8c622_floxif_mafia.exe
1792	2024-11-23_55d0dadc4feb5873b80d1a61d7a8c622_floxif_mafia.exe
1792	2024-11-23_55d0dadc4feb5873b80d1a61d7a8c622_floxif_mafia.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1792	2024-11-23_55d0dadc4feb5873b80d1a61d7a8c622_floxif_mafia.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1792 wrote to memory of 2944	1792	2024-11-23_55d0dadc4feb5873b80d1a61d7a8c622_floxif_mafia.exe	32
PID 1792 wrote to memory of 2944	1792	2024-11-23_55d0dadc4feb5873b80d1a61d7a8c622_floxif_mafia.exe	32
PID 1792 wrote to memory of 2944	1792	2024-11-23_55d0dadc4feb5873b80d1a61d7a8c622_floxif_mafia.exe	32
PID 1792 wrote to memory of 2944	1792	2024-11-23_55d0dadc4feb5873b80d1a61d7a8c622_floxif_mafia.exe	32

C:\Users\Admin\AppData\Local\Temp\2024-11-23_55d0dadc4feb5873b80d1a61d7a8c622_floxif_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2024-11-23_55d0dadc4feb5873b80d1a61d7a8c622_floxif_mafia.exe"
1⤵
- Loads dropped DLL
- Enumerates connected drives
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1792
- C:\Windows\SysWOW64\NOTEPAD.EXE
  "C:\Windows\system32\NOTEPAD.EXE" C:\HWID.txt
  2⤵
  - System Location Discovery: System Language Discovery
  - Opens file in notepad (likely ransom note)
  PID:2944

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\HWID.txt

Filesize
271B

MD5
646543e447aab1cd29cccf5a5937430e

SHA1
133741173c21f50ddee60b4f10beb1a6e088c7d7

SHA256
2edce3248875c8543cadee2244c098359818590fd53d2bc021f931079480c366

SHA512
78abd615f2094a0971807fd41f84500d833b6d7d800ccd7ea1d3d9c04b379a7145da5cf58981b25f0dbd2140788f8a7c3ed771220d05c1cb6be49e8ca6d02c03

Download Submit
\Program Files\Common Files\System\symsrv.dll

Filesize
67KB

MD5
7574cf2c64f35161ab1292e2f532aabf

SHA1
14ba3fa927a06224dfe587014299e834def4644f

SHA256
de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085

SHA512
4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

Download Submit
memory/1792-3-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/1792-5-0x00000000008D1000-0x00000000008D2000-memory.dmp

Filesize
4KB

Download
memory/1792-29-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/1792-27-0x00000000008D0000-0x00000000009FA000-memory.dmp

Filesize
1.2MB

Download

Analysis

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