floxif | 09c2c9134b76b67cc412cfec9f6da6b4384a265e088c1b4dd7f8390614f6f957

General

Target

09c2c9134b76b67cc412cfec9f6da6b4384a265e088c1b4dd7f8390614f6f957N.exe
Size

197KB
MD5

ab11e14712b8eefde139fa5169127780
SHA1

38ffdc09e855876881079895e6d97d700dc8674d
SHA256

09c2c9134b76b67cc412cfec9f6da6b4384a265e088c1b4dd7f8390614f6f957
SHA512

30ebf89a057906db78106be4974f6b6a0bf2288ae3956a910139ca141d947c5651a44a33542ad44c015ef8e860073678a86271bced68255ffcb3d33fea878de2
SSDEEP

6144:T2VH0SLpXCFCcgEwT6+gXEwT6+gXkEBV+UdvrEFp7hK1nw:iVH0S0FC1S5EBjvrEH7gw

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
behavioral1/files/0x000c0000000122e7-1.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
behavioral1/files/0x000c0000000122e7-1.dat	acprotect

Loads dropped DLL 2 IoCs

pid	Process
2344	09c2c9134b76b67cc412cfec9f6da6b4384a265e088c1b4dd7f8390614f6f957N.exe
2292	schtasks.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/files/0x000c0000000122e7-1.dat	upx
behavioral1/memory/2344-3-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral1/memory/2344-7-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral1/memory/2292-10-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral1/memory/2292-12-0x0000000010000000-0x0000000010030000-memory.dmp	upx

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\System\symsrv.dll	09c2c9134b76b67cc412cfec9f6da6b4384a265e088c1b4dd7f8390614f6f957N.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	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	09c2c9134b76b67cc412cfec9f6da6b4384a265e088c1b4dd7f8390614f6f957N.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2344	09c2c9134b76b67cc412cfec9f6da6b4384a265e088c1b4dd7f8390614f6f957N.exe
Token: SeDebugPrivilege	2292	schtasks.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2344 wrote to memory of 2292	2344	09c2c9134b76b67cc412cfec9f6da6b4384a265e088c1b4dd7f8390614f6f957N.exe	31
PID 2344 wrote to memory of 2292	2344	09c2c9134b76b67cc412cfec9f6da6b4384a265e088c1b4dd7f8390614f6f957N.exe	31
PID 2344 wrote to memory of 2292	2344	09c2c9134b76b67cc412cfec9f6da6b4384a265e088c1b4dd7f8390614f6f957N.exe	31
PID 2344 wrote to memory of 2292	2344	09c2c9134b76b67cc412cfec9f6da6b4384a265e088c1b4dd7f8390614f6f957N.exe	31

C:\Users\Admin\AppData\Local\Temp\09c2c9134b76b67cc412cfec9f6da6b4384a265e088c1b4dd7f8390614f6f957N.exe
"C:\Users\Admin\AppData\Local\Temp\09c2c9134b76b67cc412cfec9f6da6b4384a265e088c1b4dd7f8390614f6f957N.exe"
1⤵
- Loads dropped DLL
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2344
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /delete /tn "SmadavSecondaryUpdater" /f
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:2292

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

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

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

Filesize
67KB

MD5
7574cf2c64f35161ab1292e2f532aabf

SHA1
14ba3fa927a06224dfe587014299e834def4644f

SHA256
de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085

SHA512
4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

Download Submit
memory/2292-10-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/2292-12-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/2344-3-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/2344-5-0x0000000000850000-0x000000000086F000-memory.dmp

Filesize
124KB

Download
memory/2344-7-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download

Analysis

Sharing