floxif | 11d734b55aa2a817f941a11d2f649abb3ce7cdbaf2eb0d9ae12d735c60fef3b4

Analysis

max time kernel
121s
max time network
123s
platform
windows7_x64
resource
win7-20241023-en
resource tags

arch:x64arch:x86image:win7-20241023-enlocale:en-usos:windows7-x64system
submitted
10/12/2024, 06:33

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General

Target

11d734b55aa2a817f941a11d2f649abb3ce7cdbaf2eb0d9ae12d735c60fef3b4.exe
Size

808KB
MD5

23f088575f563a95b6845d301dcc3d8f
SHA1

73b8900f0aaa72be44e68f0ada533a08406b8bb4
SHA256

11d734b55aa2a817f941a11d2f649abb3ce7cdbaf2eb0d9ae12d735c60fef3b4
SHA512

d13453b8082c97c5c2e2e6dc20673a472069047633f255d62861e98a967834a493b080f6f6f6e6d938570acce2dbf45bc55c09036258be651001896843c3549f
SSDEEP

12288:MJKCRsK2SYNPG2Nl4ySBCGdo6hcXBW3CMYxHiUALEQ2BjvrEH7Esz:LVPNl4yh8DhcXBW3CM48grEH7P

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/0x000d0000000122de-1.dat	floxif

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral1/files/0x000d0000000122de-1.dat	acprotect

Loads dropped DLL 1 IoCs

pid	Process
2600	11d734b55aa2a817f941a11d2f649abb3ce7cdbaf2eb0d9ae12d735c60fef3b4.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:	11d734b55aa2a817f941a11d2f649abb3ce7cdbaf2eb0d9ae12d735c60fef3b4.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2600-3-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral1/files/0x000d0000000122de-1.dat	upx
behavioral1/memory/2600-11-0x0000000010000000-0x0000000010030000-memory.dmp	upx

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\System\symsrv.dll	11d734b55aa2a817f941a11d2f649abb3ce7cdbaf2eb0d9ae12d735c60fef3b4.exe
File created	\??\c:\program files\common files\system\symsrv.dll.000	11d734b55aa2a817f941a11d2f649abb3ce7cdbaf2eb0d9ae12d735c60fef3b4.exe

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	11d734b55aa2a817f941a11d2f649abb3ce7cdbaf2eb0d9ae12d735c60fef3b4.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2600	11d734b55aa2a817f941a11d2f649abb3ce7cdbaf2eb0d9ae12d735c60fef3b4.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2600	11d734b55aa2a817f941a11d2f649abb3ce7cdbaf2eb0d9ae12d735c60fef3b4.exe
Token: SeBackupPrivilege	2600	11d734b55aa2a817f941a11d2f649abb3ce7cdbaf2eb0d9ae12d735c60fef3b4.exe
Token: SeRestorePrivilege	2600	11d734b55aa2a817f941a11d2f649abb3ce7cdbaf2eb0d9ae12d735c60fef3b4.exe

C:\Users\Admin\AppData\Local\Temp\11d734b55aa2a817f941a11d2f649abb3ce7cdbaf2eb0d9ae12d735c60fef3b4.exe
"C:\Users\Admin\AppData\Local\Temp\11d734b55aa2a817f941a11d2f649abb3ce7cdbaf2eb0d9ae12d735c60fef3b4.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:2600

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
67KB

MD5
7574cf2c64f35161ab1292e2f532aabf

SHA1
14ba3fa927a06224dfe587014299e834def4644f

SHA256
de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085

SHA512
4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

Download Submit
memory/2600-3-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/2600-5-0x0000000000481000-0x0000000000484000-memory.dmp

Filesize
12KB

Download
memory/2600-11-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download