floxif | b8aaa6a67559587b414b1cc90c7822c92470c6e422df5703b2deeea1d8f9a5f9

Analysis

max time kernel
114s
max time network
119s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
04-10-2024 20:36

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General

Target

b8aaa6a67559587b414b1cc90c7822c92470c6e422df5703b2deeea1d8f9a5f9N.exe
Size

4.6MB
MD5

8b506b0dee7103dc626aa76589145830
SHA1

d597ff82b222c34524708eeb5782ed8e67fbd0c7
SHA256

b8aaa6a67559587b414b1cc90c7822c92470c6e422df5703b2deeea1d8f9a5f9
SHA512

3d020bb808240e91f59b360da09529b53c3be6206658cd3c8e47b9cc8320c923ed7141b24c5a2ca0d97154171d225f2da1405e29b456d23757644c01f053bc22
SSDEEP

98304:wWomUGcy1ou3iKENRYu2AYvTloZqZFV44VD7sia+B9AVIgLkzU:x9cGt3ijRr+Tlgqv7N4izBmV4Q

Score

10^/10

floxif backdoor discovery trojan upx

Malware Config

Signatures

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/0x000900000002360b-1.dat	floxif

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral2/files/0x000900000002360b-1.dat	acprotect

Loads dropped DLL 1 IoCs

pid	Process
5560	b8aaa6a67559587b414b1cc90c7822c92470c6e422df5703b2deeea1d8f9a5f9N.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:	b8aaa6a67559587b414b1cc90c7822c92470c6e422df5703b2deeea1d8f9a5f9N.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000900000002360b-1.dat	upx
behavioral2/memory/5560-2-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral2/memory/5560-175-0x0000000010000000-0x0000000010030000-memory.dmp	upx

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\System\symsrv.dll	b8aaa6a67559587b414b1cc90c7822c92470c6e422df5703b2deeea1d8f9a5f9N.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
2616	5560	WerFault.exe	88
3140	5560	WerFault.exe	88

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	b8aaa6a67559587b414b1cc90c7822c92470c6e422df5703b2deeea1d8f9a5f9N.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
5560	b8aaa6a67559587b414b1cc90c7822c92470c6e422df5703b2deeea1d8f9a5f9N.exe
5560	b8aaa6a67559587b414b1cc90c7822c92470c6e422df5703b2deeea1d8f9a5f9N.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	5560	b8aaa6a67559587b414b1cc90c7822c92470c6e422df5703b2deeea1d8f9a5f9N.exe

C:\Users\Admin\AppData\Local\Temp\b8aaa6a67559587b414b1cc90c7822c92470c6e422df5703b2deeea1d8f9a5f9N.exe
"C:\Users\Admin\AppData\Local\Temp\b8aaa6a67559587b414b1cc90c7822c92470c6e422df5703b2deeea1d8f9a5f9N.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:5560
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5560 -s 460
  2⤵
  - Program crash
  PID:2616
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5560 -s 452
  2⤵
  - Program crash
  PID:3140

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 5560 -ip 5560
1⤵
PID:5940

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 544 -p 5560 -ip 5560
1⤵
PID:5564

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=4300,i,2904906934812054273,11716976550456127484,262144 --variations-seed-version --mojo-platform-channel-handle=4384 /prefetch:8
1⤵
PID:4916

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

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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
C:\Users\Admin\AppData\Local\Temp\e588047\Latest_WIA\Setup\Data\LicenseWeb\WEB_LICENSE_FN.rtf

Filesize
34KB

MD5
c0cab97837ec485cab68f38cca20765b

SHA1
a817263dd2e5d6186e3e02962dff5be075633f0e

SHA256
60986fdcf5a5e6e23850693ea3a1e45c0ad5a7298f80ce980e5a2a5484d75742

SHA512
fe96e886f421c8315eb28a090cff7445f1b54acf7e6508aa0079ca3cac2f6ff1d8ab0b8a727500d0ceddccd0439d01a761c4fc7576a20808408a31ad377c55ca

Download Submit
memory/5560-2-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/5560-175-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/5560-173-0x00000000006C0000-0x0000000000B47000-memory.dmp

Filesize
4.5MB

Download