floxif | 2038f7322b5e721f5e01b8d7a36924e123345600ae23c3f46217febde006ad90

General

Target

2038f7322b5e721f5e01b8d7a36924e123345600ae23c3f46217febde006ad90N.exe
Size

3.6MB
MD5

93d7ef6c2b4ae941590b5e57431efc50
SHA1

bb4e2c03cf01129a0ffbeb6fd2e4a1db5860e782
SHA256

2038f7322b5e721f5e01b8d7a36924e123345600ae23c3f46217febde006ad90
SHA512

27688a315ec4f35676278dc46efab592a708457240a5be4faf0f8273e6cc73d87733de613c43854d3a5245d8c187551d7731a43053ef09ed12743ed80b927aba
SSDEEP

98304:P6TJsfvpoNTDxxRb9pJuC9KiBD7ioML9y92mRnFDZtv:CopoJdtpIa1ByoML9yzXtv

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/0x000c000000023b0b-2.dat	floxif

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral2/files/0x000c000000023b0b-2.dat	acprotect

Loads dropped DLL 1 IoCs

pid	Process
3396	2038f7322b5e721f5e01b8d7a36924e123345600ae23c3f46217febde006ad90N.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:	2038f7322b5e721f5e01b8d7a36924e123345600ae23c3f46217febde006ad90N.exe

AutoIT Executable 2 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral2/memory/3396-16-0x0000000000F10000-0x000000000145E000-memory.dmp	autoit_exe
behavioral2/memory/3396-19-0x0000000000F10000-0x000000000145E000-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/0x000c000000023b0b-2.dat	upx
behavioral2/memory/3396-5-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral2/memory/3396-20-0x0000000010000000-0x0000000010030000-memory.dmp	upx

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\System\symsrv.dll	2038f7322b5e721f5e01b8d7a36924e123345600ae23c3f46217febde006ad90N.exe
File created	\??\c:\program files\common files\system\symsrv.dll.000	2038f7322b5e721f5e01b8d7a36924e123345600ae23c3f46217febde006ad90N.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	2038f7322b5e721f5e01b8d7a36924e123345600ae23c3f46217febde006ad90N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\Nls\Language	2038f7322b5e721f5e01b8d7a36924e123345600ae23c3f46217febde006ad90N.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\Nls\Language\InstallLanguage	2038f7322b5e721f5e01b8d7a36924e123345600ae23c3f46217febde006ad90N.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3396	2038f7322b5e721f5e01b8d7a36924e123345600ae23c3f46217febde006ad90N.exe
3396	2038f7322b5e721f5e01b8d7a36924e123345600ae23c3f46217febde006ad90N.exe
3396	2038f7322b5e721f5e01b8d7a36924e123345600ae23c3f46217febde006ad90N.exe
3396	2038f7322b5e721f5e01b8d7a36924e123345600ae23c3f46217febde006ad90N.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3396	2038f7322b5e721f5e01b8d7a36924e123345600ae23c3f46217febde006ad90N.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3396 wrote to memory of 1632	3396	2038f7322b5e721f5e01b8d7a36924e123345600ae23c3f46217febde006ad90N.exe	83
PID 3396 wrote to memory of 1632	3396	2038f7322b5e721f5e01b8d7a36924e123345600ae23c3f46217febde006ad90N.exe	83
PID 3396 wrote to memory of 1632	3396	2038f7322b5e721f5e01b8d7a36924e123345600ae23c3f46217febde006ad90N.exe	83
PID 3396 wrote to memory of 1376	3396	2038f7322b5e721f5e01b8d7a36924e123345600ae23c3f46217febde006ad90N.exe	86
PID 3396 wrote to memory of 1376	3396	2038f7322b5e721f5e01b8d7a36924e123345600ae23c3f46217febde006ad90N.exe	86
PID 3396 wrote to memory of 1376	3396	2038f7322b5e721f5e01b8d7a36924e123345600ae23c3f46217febde006ad90N.exe	86

C:\Users\Admin\AppData\Local\Temp\2038f7322b5e721f5e01b8d7a36924e123345600ae23c3f46217febde006ad90N.exe
"C:\Users\Admin\AppData\Local\Temp\2038f7322b5e721f5e01b8d7a36924e123345600ae23c3f46217febde006ad90N.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:3396
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ver
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1632
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c rd /s /q "C:\~WanDrv6.Temp.C9p1F"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1376

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/3396-0-0x0000000000F10000-0x000000000145E000-memory.dmp

Filesize
5.3MB

Download
memory/3396-5-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/3396-7-0x000000000143C000-0x000000000143D000-memory.dmp

Filesize
4KB

Download
memory/3396-16-0x0000000000F10000-0x000000000145E000-memory.dmp

Filesize
5.3MB

Download
memory/3396-19-0x0000000000F10000-0x000000000145E000-memory.dmp

Filesize
5.3MB

Download
memory/3396-20-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download

Analysis

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