floxif | 0b649bdbcace3770edece68d2af338f2a346ab7c5fcf788f41eb588f6b7afb93

General

Target

0b649bdbcace3770edece68d2af338f2a346ab7c5fcf788f41eb588f6b7afb93N.exe
Size

3.6MB
MD5

96885f4875e33b7e5bbc0f1e763b5500
SHA1

90b6c3f8f5b8d84bb3dfecede41084fea7e96704
SHA256

0b649bdbcace3770edece68d2af338f2a346ab7c5fcf788f41eb588f6b7afb93
SHA512

bc1e84a358093ae344ad7fe90aa13253be4507f72f4440f1cc010475660aea61c993b06c02e1b6f6fd9c98d9b31ab8f14aaa173165cf752057c30eac07d35e62
SSDEEP

98304:P6TJTfvpoNTDxxRb9pJuC9KiBD7ioML9y92mRnFDlti:CtpoJdtpIa1ByoML9yzLti

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
behavioral2/files/0x000c000000023b23-2.dat	floxif

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral2/files/0x000c000000023b23-2.dat	acprotect

Loads dropped DLL 1 IoCs

pid	Process
3592	0b649bdbcace3770edece68d2af338f2a346ab7c5fcf788f41eb588f6b7afb93N.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:	0b649bdbcace3770edece68d2af338f2a346ab7c5fcf788f41eb588f6b7afb93N.exe

AutoIT Executable 2 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral2/memory/3592-16-0x0000000000BD0000-0x000000000111E000-memory.dmp	autoit_exe
behavioral2/memory/3592-21-0x0000000000BD0000-0x000000000111E000-memory.dmp	autoit_exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000c000000023b23-2.dat	upx
behavioral2/memory/3592-5-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral2/memory/3592-22-0x0000000010000000-0x0000000010030000-memory.dmp	upx

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\System\symsrv.dll	0b649bdbcace3770edece68d2af338f2a346ab7c5fcf788f41eb588f6b7afb93N.exe
File created	\??\c:\program files\common files\system\symsrv.dll.000	0b649bdbcace3770edece68d2af338f2a346ab7c5fcf788f41eb588f6b7afb93N.exe

System Location Discovery: System Language Discovery 1 TTPs 5 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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	0b649bdbcace3770edece68d2af338f2a346ab7c5fcf788f41eb588f6b7afb93N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\Nls\Language	0b649bdbcace3770edece68d2af338f2a346ab7c5fcf788f41eb588f6b7afb93N.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\Nls\Language\InstallLanguage	0b649bdbcace3770edece68d2af338f2a346ab7c5fcf788f41eb588f6b7afb93N.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3592	0b649bdbcace3770edece68d2af338f2a346ab7c5fcf788f41eb588f6b7afb93N.exe
3592	0b649bdbcace3770edece68d2af338f2a346ab7c5fcf788f41eb588f6b7afb93N.exe
3592	0b649bdbcace3770edece68d2af338f2a346ab7c5fcf788f41eb588f6b7afb93N.exe
3592	0b649bdbcace3770edece68d2af338f2a346ab7c5fcf788f41eb588f6b7afb93N.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3592	0b649bdbcace3770edece68d2af338f2a346ab7c5fcf788f41eb588f6b7afb93N.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3592 wrote to memory of 3996	3592	0b649bdbcace3770edece68d2af338f2a346ab7c5fcf788f41eb588f6b7afb93N.exe	82
PID 3592 wrote to memory of 3996	3592	0b649bdbcace3770edece68d2af338f2a346ab7c5fcf788f41eb588f6b7afb93N.exe	82
PID 3592 wrote to memory of 3996	3592	0b649bdbcace3770edece68d2af338f2a346ab7c5fcf788f41eb588f6b7afb93N.exe	82
PID 3592 wrote to memory of 3912	3592	0b649bdbcace3770edece68d2af338f2a346ab7c5fcf788f41eb588f6b7afb93N.exe	84
PID 3592 wrote to memory of 3912	3592	0b649bdbcace3770edece68d2af338f2a346ab7c5fcf788f41eb588f6b7afb93N.exe	84
PID 3592 wrote to memory of 3912	3592	0b649bdbcace3770edece68d2af338f2a346ab7c5fcf788f41eb588f6b7afb93N.exe	84

C:\Users\Admin\AppData\Local\Temp\0b649bdbcace3770edece68d2af338f2a346ab7c5fcf788f41eb588f6b7afb93N.exe
"C:\Users\Admin\AppData\Local\Temp\0b649bdbcace3770edece68d2af338f2a346ab7c5fcf788f41eb588f6b7afb93N.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:3592
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ver
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3996
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c rd /s /q "C:\~WanDrv6.Temp.BpevM"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3912

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

1

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

Filesize
67KB

MD5
7574cf2c64f35161ab1292e2f532aabf

SHA1
14ba3fa927a06224dfe587014299e834def4644f

SHA256
de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085

SHA512
4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

Download Submit
memory/3592-0-0x0000000000BD0000-0x000000000111E000-memory.dmp

Filesize
5.3MB

Download
memory/3592-5-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/3592-7-0x00000000010FC000-0x00000000010FD000-memory.dmp

Filesize
4KB

Download
memory/3592-16-0x0000000000BD0000-0x000000000111E000-memory.dmp

Filesize
5.3MB

Download
memory/3592-21-0x0000000000BD0000-0x000000000111E000-memory.dmp

Filesize
5.3MB

Download
memory/3592-22-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download

Analysis

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