floxif | 170962bab6f892e1135d9cc1ec018fd9a0bc907cda04783991992df238067174

General

Target

170962bab6f892e1135d9cc1ec018fd9a0bc907cda04783991992df238067174N.exe
Size

448KB
MD5

f1eae90e001f427eeac5712a65ae3900
SHA1

1477b49f2647c45ea0ca2387ecbba7a095866406
SHA256

170962bab6f892e1135d9cc1ec018fd9a0bc907cda04783991992df238067174
SHA512

7a965766522d045fe6e9093f49bf12a78d5f148badb06d9f0d10cf955b2b3923591c9a7dedc5a3d80d2fdd1a5bcc01f82d648455d93240a95bb1bfc968dfa1b7
SSDEEP

12288:Sda3U2wVxocZ+X9Hwg4HpKIi7rDMO7JeBjvrEH7b:vqxZZ+XFL4HpKIVIJYrEH7b

Score

10^/10

floxif backdoor discovery persistence privilege_escalation 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/0x00090000000233f9-1.dat	floxif

Event Triggered Execution: AppInit DLLs 1 TTPs
Adversaries may establish persistence and/or elevate privileges by executing malicious content triggered by AppInit DLLs loaded into processes.
persistence privilege_escalation

AppInit DLLs
T1546.010

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral2/files/0x00090000000233f9-1.dat	acprotect

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1194130065-3471212556-1656947724-1000\Control Panel\International\Geo\Nation	170962bab6f892e1135d9cc1ec018fd9a0bc907cda04783991992df238067174N.exe

Loads dropped DLL 2 IoCs

pid	Process
3056	170962bab6f892e1135d9cc1ec018fd9a0bc907cda04783991992df238067174N.exe
3636	170962bab6f892e1135d9cc1ec018fd9a0bc907cda04783991992df238067174N.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3056-4-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral2/files/0x00090000000233f9-1.dat	upx
behavioral2/memory/3056-11-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral2/memory/3636-12-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral2/memory/3636-14-0x0000000010000000-0x0000000010030000-memory.dmp	upx

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\System\symsrv.dll	170962bab6f892e1135d9cc1ec018fd9a0bc907cda04783991992df238067174N.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 2 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	170962bab6f892e1135d9cc1ec018fd9a0bc907cda04783991992df238067174N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	170962bab6f892e1135d9cc1ec018fd9a0bc907cda04783991992df238067174N.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3056	170962bab6f892e1135d9cc1ec018fd9a0bc907cda04783991992df238067174N.exe
Token: SeDebugPrivilege	3636	170962bab6f892e1135d9cc1ec018fd9a0bc907cda04783991992df238067174N.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3056 wrote to memory of 3636	3056	170962bab6f892e1135d9cc1ec018fd9a0bc907cda04783991992df238067174N.exe	82
PID 3056 wrote to memory of 3636	3056	170962bab6f892e1135d9cc1ec018fd9a0bc907cda04783991992df238067174N.exe	82
PID 3056 wrote to memory of 3636	3056	170962bab6f892e1135d9cc1ec018fd9a0bc907cda04783991992df238067174N.exe	82

C:\Users\Admin\AppData\Local\Temp\170962bab6f892e1135d9cc1ec018fd9a0bc907cda04783991992df238067174N.exe
"C:\Users\Admin\AppData\Local\Temp\170962bab6f892e1135d9cc1ec018fd9a0bc907cda04783991992df238067174N.exe"
1⤵
- Checks computer location settings
- Loads dropped DLL
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3056
- C:\Users\Admin\AppData\Local\Temp\170962bab6f892e1135d9cc1ec018fd9a0bc907cda04783991992df238067174N.exe
  "C:\Users\Admin\AppData\Local\Temp\170962bab6f892e1135d9cc1ec018fd9a0bc907cda04783991992df238067174N.exe" -uninstall
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:3636

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Event Triggered Execution

1

T1546

AppInit DLLs

1

T1546.010

Privilege Escalation

Event Triggered Execution

1

T1546

AppInit DLLs

1

T1546.010

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

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/3056-4-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/3056-6-0x0000000000551000-0x0000000000552000-memory.dmp

Filesize
4KB

Download
memory/3056-11-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/3056-7-0x0000000000550000-0x00000000005B2000-memory.dmp

Filesize
392KB

Download
memory/3636-12-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/3636-13-0x0000000000550000-0x00000000005B2000-memory.dmp

Filesize
392KB

Download
memory/3636-14-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download

Analysis

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