floxif | a1192cd8bd5802387cf650ca41b174b5f6bd4e1e455ad51eaec86f585ac0cf36

General

Target
2024-12-28_7cdf75a683aa467119eb73bb796a2f78_floxif_mafia.exe
Size 2.5MB
Sample241228-pk3rxaylen
SHA256 a1192cd8bd5802387cf650ca41b174b5f6bd4e1e455ad51eaec86f585ac0cf36
MD5 7cdf75a683aa467119eb73bb796a2f78
SHA1 6a34303c3b3cf6a7266ba0d8611e173acc52ec6d
SHA512 6422848f643a588cbec6835b9a37d10c8e1de4487cd35d3e3e5a7b7cddc8a1813de6efd78f8d3e013e2000968ab0d382342fea20f3dd8002dc7f9658f0c8ca27
SSDEEP 49152:1uIIKcofs2hPd2l177BTK2VbDsar1YDjs:1jZfs2hPIl1/v
MD5 SHA1 SHA512 SSDEEP

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/0x000c000000023b5a-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/0x000c000000023b5a-1.dat	acprotect

Loads dropped DLL 7 IoCs

pid	Process
2300	2024-12-28_7cdf75a683aa467119eb73bb796a2f78_floxif_mafia.exe
2424	WerFault.exe
2220	WerFault.exe
2932	WerFault.exe
1728	WerFault.exe
3056	WerFault.exe
880	WerFault.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:	2024-12-28_7cdf75a683aa467119eb73bb796a2f78_floxif_mafia.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000c000000023b5a-1.dat	upx
behavioral2/memory/2300-4-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral2/memory/2300-19-0x0000000010000000-0x0000000010030000-memory.dmp	upx

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\System\symsrv.dll	2024-12-28_7cdf75a683aa467119eb73bb796a2f78_floxif_mafia.exe

Program crash 3 IoCs

pid	pid_target	Process	procid_target
2932	2300	WerFault.exe	82
3056	2300	WerFault.exe	82
880	2300	WerFault.exe	82

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	2024-12-28_7cdf75a683aa467119eb73bb796a2f78_floxif_mafia.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2300	2024-12-28_7cdf75a683aa467119eb73bb796a2f78_floxif_mafia.exe
2300	2024-12-28_7cdf75a683aa467119eb73bb796a2f78_floxif_mafia.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2300	2024-12-28_7cdf75a683aa467119eb73bb796a2f78_floxif_mafia.exe

C:\Users\Admin\AppData\Local\Temp\2024-12-28_7cdf75a683aa467119eb73bb796a2f78_floxif_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2024-12-28_7cdf75a683aa467119eb73bb796a2f78_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
PID:2300
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2300 -s 836
  2⤵
  - Loads dropped DLL
  - Program crash
  PID:2932
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2300 -s 928
  2⤵
  - Loads dropped DLL
  - Program crash
  PID:3056
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2300 -s 844
  2⤵
  - Loads dropped DLL
  - Program crash
  PID:880

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 2300 -ip 2300
1⤵
- Loads dropped DLL
PID:2220

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 2300 -ip 2300
1⤵
- Loads dropped DLL
PID:2424

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 552 -p 2300 -ip 2300
1⤵
- Loads dropped DLL
PID:1728

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Event Triggered Execution

1

T1546

AppInit DLLs

1

T1546.010

Privilege Escalation

Event Triggered Execution

1

T1546

AppInit DLLs

1

T1546.010

Defense Evasion

Credential Access

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

symsrv.dll

Path C:\Program Files\Common Files\System\symsrv.dll
Size 67KB
SHA256 de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085
MD5 7574cf2c64f35161ab1292e2f532aabf
SHA1 14ba3fa927a06224dfe587014299e834def4644f
SHA512 4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab
SSDEEP 1536:YjV8y93KQpFQmPLRk7G50zy/riF12jvRyo0hQk7ZL:c8y93KQjy7G55riF1cMo03V
MD5 SHA1 SHA512 SSDEEP

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memory/2300-4-0x0000000010000000-0x0000000010030000-memory.dmp

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memory/2300-6-0x00000000006C1000-0x00000000006C2000-memory.dmp

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memory/2300-19-0x0000000010000000-0x0000000010030000-memory.dmp

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memory/2300-17-0x00000000006C0000-0x000000000092A000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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