floxif | a776ad2fc9bf7e2c4c8d24f22fc77ba22355164f87b8fc4b91dcb258133183b9

Analysis

max time kernel
121s
max time network
122s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
20-01-2025 20:50

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General

Target

a776ad2fc9bf7e2c4c8d24f22fc77ba22355164f87b8fc4b91dcb258133183b9.exe
Size

665KB
MD5

1fd08767128fb46493e942c9fb204004
SHA1

93b05c2b4a3171923711d38dc38069761d6971f6
SHA256

a776ad2fc9bf7e2c4c8d24f22fc77ba22355164f87b8fc4b91dcb258133183b9
SHA512

14351009e042716323b4af1059bfa130964345170aa636f180faae56f546e178d907fa674aab532a35783ca8605bf3831882110175b8d778b8cf339bf2ffd8da
SSDEEP

12288:Xu1zXcsafJcLln5QwnVWqqPIBONhxsU/EbBjvrEH7uA0:Xu9P90r/xsU/EhrEH7/0

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/0x00080000000120ff-1.dat	floxif

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral1/files/0x00080000000120ff-1.dat	acprotect

Loads dropped DLL 1 IoCs

pid	Process
2472	a776ad2fc9bf7e2c4c8d24f22fc77ba22355164f87b8fc4b91dcb258133183b9.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:	a776ad2fc9bf7e2c4c8d24f22fc77ba22355164f87b8fc4b91dcb258133183b9.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2472-3-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral1/files/0x00080000000120ff-1.dat	upx
behavioral1/memory/2472-63-0x0000000010000000-0x0000000010030000-memory.dmp	upx

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	\??\c:\program files\common files\system\symsrv.dll.000	a776ad2fc9bf7e2c4c8d24f22fc77ba22355164f87b8fc4b91dcb258133183b9.exe
File created	C:\Program Files\Common Files\System\symsrv.dll	a776ad2fc9bf7e2c4c8d24f22fc77ba22355164f87b8fc4b91dcb258133183b9.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	a776ad2fc9bf7e2c4c8d24f22fc77ba22355164f87b8fc4b91dcb258133183b9.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2472	a776ad2fc9bf7e2c4c8d24f22fc77ba22355164f87b8fc4b91dcb258133183b9.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2472	a776ad2fc9bf7e2c4c8d24f22fc77ba22355164f87b8fc4b91dcb258133183b9.exe

C:\Users\Admin\AppData\Local\Temp\a776ad2fc9bf7e2c4c8d24f22fc77ba22355164f87b8fc4b91dcb258133183b9.exe
"C:\Users\Admin\AppData\Local\Temp\a776ad2fc9bf7e2c4c8d24f22fc77ba22355164f87b8fc4b91dcb258133183b9.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:2472

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

C:\Users\Admin\AppData\Local\Temp\log.txt

Filesize
6KB

MD5
ef4c9aacf02e0630cdade948053558f6

SHA1
927925bb0a948f7399fecf6a645d5842444e655e

SHA256
98e28b41fa63f56436df817a51567592f49989e90e58c9ed9f252b89b4995631

SHA512
5de57c3117ac25eb544168f49d9eed259404c4485895f3708fd7f26b222d2c8d34826fd7132d37fb1bda4fbbccf525c778e12ee996a7bf9a30498b6149faf2b7

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

Filesize
67KB

MD5
7574cf2c64f35161ab1292e2f532aabf

SHA1
14ba3fa927a06224dfe587014299e834def4644f

SHA256
de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085

SHA512
4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

Download Submit
memory/2472-3-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/2472-61-0x0000000001290000-0x000000000132A000-memory.dmp

Filesize
616KB

Download
memory/2472-63-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download