floxif | 040825bd8ce268933ca4ab4ef184f97cf34d2dd2e4ccbd681e7a17dea8047626

General

Target

040825bd8ce268933ca4ab4ef184f97cf34d2dd2e4ccbd681e7a17dea8047626.exe
Size

2.0MB
MD5

cd2a7350df1a868944be18205675df73
SHA1

b11d264eeeba15e99e33a5e9a08250ae954ff4f1
SHA256

040825bd8ce268933ca4ab4ef184f97cf34d2dd2e4ccbd681e7a17dea8047626
SHA512

e99cd22a4c7c49cfd321526bec4ed0f4ac01781381abb88d2163c98c39eaeda5efbfd676130ed6c56c1c95f29d767cd7b6a22fccf1d649e5b5e855174b57212f
SSDEEP

49152:Dk0e05nJIioHlq+c6gXR92IISNbecXxHDoVf3M7sSZOZVVNa6Zp:Dka5nHoHlq+c6y92IBRecXxHUVf3M7sx

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/0x000e000000023ce7-1.dat	floxif

Downloads MZ/PE file 1 IoCs

flow	pid	Process
31	4100	Process not Found

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral2/files/0x000e000000023ce7-1.dat	acprotect

Loads dropped DLL 1 IoCs

pid	Process
2708	040825bd8ce268933ca4ab4ef184f97cf34d2dd2e4ccbd681e7a17dea8047626.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2708-4-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral2/files/0x000e000000023ce7-1.dat	upx
behavioral2/memory/2708-9-0x0000000010000000-0x0000000010030000-memory.dmp	upx

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\System\symsrv.dll	040825bd8ce268933ca4ab4ef184f97cf34d2dd2e4ccbd681e7a17dea8047626.exe

System Location Discovery: System Language Discovery 1 TTPs 3 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	MicrosoftEdgeUpdate.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	040825bd8ce268933ca4ab4ef184f97cf34d2dd2e4ccbd681e7a17dea8047626.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	MicrosoftEdgeUpdate.exe

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
4908	MicrosoftEdgeUpdate.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2708	040825bd8ce268933ca4ab4ef184f97cf34d2dd2e4ccbd681e7a17dea8047626.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2708	040825bd8ce268933ca4ab4ef184f97cf34d2dd2e4ccbd681e7a17dea8047626.exe

C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe
"C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe" /ua /installsource core
1⤵
- System Location Discovery: System Language Discovery
PID:2956

C:\Users\Admin\AppData\Local\Temp\040825bd8ce268933ca4ab4ef184f97cf34d2dd2e4ccbd681e7a17dea8047626.exe
"C:\Users\Admin\AppData\Local\Temp\040825bd8ce268933ca4ab4ef184f97cf34d2dd2e4ccbd681e7a17dea8047626.exe"
1⤵
- Loads dropped DLL
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:2708

C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe
"C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe" /ping 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-PGFwcCBhcHBpZD0iezhBNjlEMzQ1LUQ1NjQtNDYzYy1BRkYxLUE2OUQ5RTUzMEY5Nn0iIHZlcnNpb249IjEyMy4wLjYzMTIuMTIzIiBuZXh0dmVyc2lvbj0iIiBsYW5nPSJlbiIgYnJhbmQ9IkdHTFMiIGNsaWVudD0iIiBpbnN0YWxsYWdlPSIxIiBpbnN0YWxsZGF0ZXRpbWU9IjE3Mzg5NDU5MjEiIG9vYmVfaW5zdGFsbF90aW1lPSIxMzM4MzQxODE5ODA3NzAwMDAiPjxldmVudCBldmVudHR5cGU9IjMxIiBldmVudHJlc3VsdD0iMSIgZXJyb3Jjb2RlPSIwIiBleHRyYWNvZGUxPSIyMTc5ODYyIiBzeXN0ZW1fdXB0aW1lX3RpY2tzPSI1MTM4NjM1NzMyIi8-PC9hcHA-PC9yZXF1ZXN0Pg
1⤵
- System Location Discovery: System Language Discovery
- System Network Configuration Discovery: Internet Connection Discovery
PID:4908

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

System Network Configuration Discovery

1

T1016

Internet Connection Discovery

1

T1016.001

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
C:\ProgramData\Microsoft\EdgeUpdate\Log\MicrosoftEdgeUpdate.log

Filesize
402KB

MD5
ff83c006f10a86a462bc7fe86eb0826d

SHA1
940ca60696d39647ed5d686c6162071aca4b90c1

SHA256
34f82ba9652293b2cde3ecc0d4d213b54f86002fc176de2f1dea6d7518529681

SHA512
c33f5dfce400e1a80f32a7febd05819702c92b17a55af9f112aa06ed70c7bd2d734290c61e7670377cf147768ab8f03c37a81d2bb9475d237563eff32edefa13

Download Submit
memory/2708-4-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/2708-7-0x00000000005B0000-0x00000000007B2000-memory.dmp

Filesize
2.0MB

Download
memory/2708-9-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download

Analysis

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