floxif | 9070fc163e22fb487f93ad3eaf4aa05bcfa7c504e9bb52a164bebe9d8ea0adaa

General

Target

9070fc163e22fb487f93ad3eaf4aa05bcfa7c504e9bb52a164bebe9d8ea0adaa.exe
Size

2.3MB
MD5

a7d1622e1cdc6a6dc97a968a3cd407fe
SHA1

a0b7fb182e29cdea22a2ed95ef97b4fb5385169a
SHA256

9070fc163e22fb487f93ad3eaf4aa05bcfa7c504e9bb52a164bebe9d8ea0adaa
SHA512

d1fb2657f5ac7e0227db2d7d0a59726f28bc3f4b3361760244e5ce672f78e87931dfbcafcf3d1a9f26f30b45bf9b45e9ece9523e7f54689b4c72cddf89802986
SSDEEP

49152:00dRSt4+iCJSmPI/6qGlbT4fmRJ4y9dYp:0xSmPI+lAK9dC

Score

10^/10

floxif backdoor discovery persistence privilege_escalation 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/0x0009000000023d98-2.dat	floxif

Downloads MZ/PE file 1 IoCs

flow	pid	Process
73	3068	Process not Found

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\Drivers\AsrDrv202.sys	9070fc163e22fb487f93ad3eaf4aa05bcfa7c504e9bb52a164bebe9d8ea0adaa.exe

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/0x0009000000023d98-2.dat	acprotect

Loads dropped DLL 10 IoCs

pid	Process
3520	9070fc163e22fb487f93ad3eaf4aa05bcfa7c504e9bb52a164bebe9d8ea0adaa.exe
3520	9070fc163e22fb487f93ad3eaf4aa05bcfa7c504e9bb52a164bebe9d8ea0adaa.exe
1904	Process not Found
1904	Process not Found
1724	WerFault.exe
5104	WerFault.exe
1944	MicrosoftEdgeUpdate.exe
1944	MicrosoftEdgeUpdate.exe
1232	WerFault.exe
1000	WerFault.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:	9070fc163e22fb487f93ad3eaf4aa05bcfa7c504e9bb52a164bebe9d8ea0adaa.exe

UPX packed file 7 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3520-5-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral2/files/0x0009000000023d98-2.dat	upx
behavioral2/memory/3520-21-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral2/memory/3520-20-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral2/memory/3520-24-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral2/memory/1944-31-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral2/memory/1944-36-0x0000000010000000-0x0000000010030000-memory.dmp	upx

Drops file in Program Files directory 5 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Microsoft\EdgeUpdate\1.3.195.43\msedgeupdate.dll	9070fc163e22fb487f93ad3eaf4aa05bcfa7c504e9bb52a164bebe9d8ea0adaa.exe
File created	C:\Program Files (x86)\Microsoft\EdgeUpdate\1.3.195.43\msedgeupdate.dll.tmp	9070fc163e22fb487f93ad3eaf4aa05bcfa7c504e9bb52a164bebe9d8ea0adaa.exe
File opened for modification	C:\Program Files (x86)\Microsoft\EdgeUpdate\1.3.195.43\msedgeupdate.dll.dat	9070fc163e22fb487f93ad3eaf4aa05bcfa7c504e9bb52a164bebe9d8ea0adaa.exe
File created	\??\c:\program files\common files\system\symsrv.dll.000	9070fc163e22fb487f93ad3eaf4aa05bcfa7c504e9bb52a164bebe9d8ea0adaa.exe
File created	C:\Program Files\Common Files\System\symsrv.dll	9070fc163e22fb487f93ad3eaf4aa05bcfa7c504e9bb52a164bebe9d8ea0adaa.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
5104	1904	WerFault.exe	94
1000	1944	WerFault.exe	98

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	9070fc163e22fb487f93ad3eaf4aa05bcfa7c504e9bb52a164bebe9d8ea0adaa.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
1944	MicrosoftEdgeUpdate.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3520	9070fc163e22fb487f93ad3eaf4aa05bcfa7c504e9bb52a164bebe9d8ea0adaa.exe
3520	9070fc163e22fb487f93ad3eaf4aa05bcfa7c504e9bb52a164bebe9d8ea0adaa.exe

Suspicious behavior: LoadsDriver 1 IoCs

pid	Process
648	Process not Found

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3520	9070fc163e22fb487f93ad3eaf4aa05bcfa7c504e9bb52a164bebe9d8ea0adaa.exe

C:\Users\Admin\AppData\Local\Temp\9070fc163e22fb487f93ad3eaf4aa05bcfa7c504e9bb52a164bebe9d8ea0adaa.exe
"C:\Users\Admin\AppData\Local\Temp\9070fc163e22fb487f93ad3eaf4aa05bcfa7c504e9bb52a164bebe9d8ea0adaa.exe"
1⤵
- Drops file in Drivers directory
- 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:3520

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 204 -p 1904 -ip 1904
1⤵
- Loads dropped DLL
PID:1724

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1904 -s 624
1⤵
- Loads dropped DLL
- Program crash
PID:5104

C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe
"C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe" /ping 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-PGFwcCBhcHBpZD0iezhBNjlEMzQ1LUQ1NjQtNDYzYy1BRkYxLUE2OUQ5RTUzMEY5Nn0iIHZlcnNpb249IjEyMy4wLjYzMTIuMTIzIiBuZXh0dmVyc2lvbj0iIiBsYW5nPSJlbiIgYnJhbmQ9IkdHTFMiIGNsaWVudD0iIiBpbnN0YWxsYWdlPSIxIiBpbnN0YWxsZGF0ZXRpbWU9IjE3Mzg5NDQ5MjgiIG9vYmVfaW5zdGFsbF90aW1lPSIxMzM4MzQxNzQzMjM4OTAwMDAiPjxldmVudCBldmVudHR5cGU9IjMxIiBldmVudHJlc3VsdD0iMSIgZXJyb3Jjb2RlPSIwIiBleHRyYWNvZGUxPSIyMTc5ODYyIiBzeXN0ZW1fdXB0aW1lX3RpY2tzPSI1MjQxNTY2MDAyIi8-PC9hcHA-PC9yZXF1ZXN0Pg
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- System Network Configuration Discovery: Internet Connection Discovery
PID:1944
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1944 -s 528
  2⤵
  - Loads dropped DLL
  - Program crash
  PID:1000

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 464 -p 1944 -ip 1944
1⤵
- Loads dropped DLL
PID:1232

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

Peripheral Device Discovery

Query Registry

System Information Discovery

1

T1082

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 (x86)\Microsoft\EdgeUpdate\1.3.195.43\msedgeupdate.dll.tmp

Filesize
2.2MB

MD5
64424ebc51e654b3652659a4af8c104d

SHA1
145b158a40d3e20cf8c7a915012f0ba7aef6fde3

SHA256
85898a05a57c88db21d009f621a2d0ee4f9abe0a9114fda88cde384904c3f8b5

SHA512
46932271c0043710ab76dd8e08822cf683868c333c1af67d1e2bccfbb3ad0d8fe260da4a892ed778efb4b1079dcf0e04b2e4d2a3574a165a3a0b7cf64fa8c1b7

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

Filesize
67KB

MD5
7574cf2c64f35161ab1292e2f532aabf

SHA1
14ba3fa927a06224dfe587014299e834def4644f

SHA256
de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085

SHA512
4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

Download Submit
memory/1944-31-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/1944-36-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/3520-0-0x0000000000400000-0x000000000064E000-memory.dmp

Filesize
2.3MB

Download
memory/3520-5-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/3520-21-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/3520-20-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/3520-19-0x0000000000400000-0x000000000064E000-memory.dmp

Filesize
2.3MB

Download
memory/3520-24-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/3520-22-0x0000000000400000-0x000000000064E000-memory.dmp

Filesize
2.3MB

Download

Analysis

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