floxif | 7bc9ea42a7c6dfa968d75090ccbf46bf98859f7e38a6370f3a73592403dc1466

General

Target

7bc9ea42a7c6dfa968d75090ccbf46bf98859f7e38a6370f3a73592403dc1466N.exe
Size

2.1MB
MD5

21430de3812d209f6d98008fbb46c620
SHA1

dcb01a51091e0f215d60f4fc4c40aea452b67274
SHA256

7bc9ea42a7c6dfa968d75090ccbf46bf98859f7e38a6370f3a73592403dc1466
SHA512

172eab0029b685858fcced31d57cbfe12e190e3190f0da3e5187ff201e06219cbfafc7f2709a43997fe3da26c79963515b73113348edf1561fc2fc56e75a730f
SSDEEP

49152:cVlvpIwwozsEbQfXvBIsyBjuv11f1jKwsRAVnB77:8hpRzsE0vJTCjut1qyVnh

Score

10^/10

floxif backdoor discovery persistence 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/0x000c000000023b3a-1.dat	floxif

Drops file in Drivers directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system32\Drivers\PROCMON24.SYS	7bc9ea42a7c6dfa968d75090ccbf46bf98859f7e38a6370f3a73592403dc1466N64.exe
File created	C:\Windows\system32\Drivers\PROCMON24.SYS	7bc9ea42a7c6dfa968d75090ccbf46bf98859f7e38a6370f3a73592403dc1466N64.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\PROCMON24\ImagePath = "\\??\\C:\\Windows\\system32\\Drivers\\PROCMON24.SYS"	7bc9ea42a7c6dfa968d75090ccbf46bf98859f7e38a6370f3a73592403dc1466N64.exe

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral2/files/0x000c000000023b3a-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-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	7bc9ea42a7c6dfa968d75090ccbf46bf98859f7e38a6370f3a73592403dc1466N.exe

Executes dropped EXE 1 IoCs

pid	Process
748	7bc9ea42a7c6dfa968d75090ccbf46bf98859f7e38a6370f3a73592403dc1466N64.exe

Loads dropped DLL 1 IoCs

pid	Process
5012	7bc9ea42a7c6dfa968d75090ccbf46bf98859f7e38a6370f3a73592403dc1466N.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:	7bc9ea42a7c6dfa968d75090ccbf46bf98859f7e38a6370f3a73592403dc1466N.exe

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000c000000023b3a-1.dat	upx
behavioral2/memory/5012-3-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral2/memory/5012-74-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral2/memory/5012-80-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral2/memory/5012-86-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral2/memory/5012-99-0x0000000010000000-0x0000000010030000-memory.dmp	upx

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\System\symsrv.dll	7bc9ea42a7c6dfa968d75090ccbf46bf98859f7e38a6370f3a73592403dc1466N.exe
File created	\??\c:\program files\common files\system\symsrv.dll.000	7bc9ea42a7c6dfa968d75090ccbf46bf98859f7e38a6370f3a73592403dc1466N.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 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	7bc9ea42a7c6dfa968d75090ccbf46bf98859f7e38a6370f3a73592403dc1466N.exe

Modifies registry class 11 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	7bc9ea42a7c6dfa968d75090ccbf46bf98859f7e38a6370f3a73592403dc1466N.exe
Key created	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000_Classes\.PML	7bc9ea42a7c6dfa968d75090ccbf46bf98859f7e38a6370f3a73592403dc1466N64.exe
Key created	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000_Classes\ProcMon.Logfile.1	7bc9ea42a7c6dfa968d75090ccbf46bf98859f7e38a6370f3a73592403dc1466N64.exe
Key created	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000_Classes\ProcMon.Logfile.1\shell\open\command	7bc9ea42a7c6dfa968d75090ccbf46bf98859f7e38a6370f3a73592403dc1466N64.exe
Key created	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000_Classes\ProcMon.Logfile.1\DefaultIcon	7bc9ea42a7c6dfa968d75090ccbf46bf98859f7e38a6370f3a73592403dc1466N64.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000_Classes\ProcMon.Logfile.1\DefaultIcon\ = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\7bc9ea42a7c6dfa968d75090ccbf46bf98859f7e38a6370f3a73592403dc1466N.exe\",0"	7bc9ea42a7c6dfa968d75090ccbf46bf98859f7e38a6370f3a73592403dc1466N64.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000_Classes\.PML\ = "ProcMon.Logfile.1"	7bc9ea42a7c6dfa968d75090ccbf46bf98859f7e38a6370f3a73592403dc1466N64.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000_Classes\ProcMon.Logfile.1\ = "ProcMon Log File"	7bc9ea42a7c6dfa968d75090ccbf46bf98859f7e38a6370f3a73592403dc1466N64.exe
Key created	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000_Classes\ProcMon.Logfile.1\shell	7bc9ea42a7c6dfa968d75090ccbf46bf98859f7e38a6370f3a73592403dc1466N64.exe
Key created	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000_Classes\ProcMon.Logfile.1\shell\open	7bc9ea42a7c6dfa968d75090ccbf46bf98859f7e38a6370f3a73592403dc1466N64.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000_Classes\ProcMon.Logfile.1\shell\open\command\ = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\7bc9ea42a7c6dfa968d75090ccbf46bf98859f7e38a6370f3a73592403dc1466N.exe\" /OpenLog \"%1\""	7bc9ea42a7c6dfa968d75090ccbf46bf98859f7e38a6370f3a73592403dc1466N64.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
5012	7bc9ea42a7c6dfa968d75090ccbf46bf98859f7e38a6370f3a73592403dc1466N.exe
5012	7bc9ea42a7c6dfa968d75090ccbf46bf98859f7e38a6370f3a73592403dc1466N.exe
5012	7bc9ea42a7c6dfa968d75090ccbf46bf98859f7e38a6370f3a73592403dc1466N.exe
5012	7bc9ea42a7c6dfa968d75090ccbf46bf98859f7e38a6370f3a73592403dc1466N.exe
5012	7bc9ea42a7c6dfa968d75090ccbf46bf98859f7e38a6370f3a73592403dc1466N.exe
5012	7bc9ea42a7c6dfa968d75090ccbf46bf98859f7e38a6370f3a73592403dc1466N.exe

Suspicious behavior: LoadsDriver 1 IoCs

pid	Process
748	7bc9ea42a7c6dfa968d75090ccbf46bf98859f7e38a6370f3a73592403dc1466N64.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	5012	7bc9ea42a7c6dfa968d75090ccbf46bf98859f7e38a6370f3a73592403dc1466N.exe
Token: SeDebugPrivilege	748	7bc9ea42a7c6dfa968d75090ccbf46bf98859f7e38a6370f3a73592403dc1466N64.exe
Token: SeLoadDriverPrivilege	748	7bc9ea42a7c6dfa968d75090ccbf46bf98859f7e38a6370f3a73592403dc1466N64.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 5012 wrote to memory of 748	5012	7bc9ea42a7c6dfa968d75090ccbf46bf98859f7e38a6370f3a73592403dc1466N.exe	82
PID 5012 wrote to memory of 748	5012	7bc9ea42a7c6dfa968d75090ccbf46bf98859f7e38a6370f3a73592403dc1466N.exe	82

C:\Users\Admin\AppData\Local\Temp\7bc9ea42a7c6dfa968d75090ccbf46bf98859f7e38a6370f3a73592403dc1466N.exe
"C:\Users\Admin\AppData\Local\Temp\7bc9ea42a7c6dfa968d75090ccbf46bf98859f7e38a6370f3a73592403dc1466N.exe"
1⤵
- Checks computer location settings
- Loads dropped DLL
- Enumerates connected drives
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:5012
- C:\Users\Admin\AppData\Local\Temp\7bc9ea42a7c6dfa968d75090ccbf46bf98859f7e38a6370f3a73592403dc1466N64.exe
  "C:\Users\Admin\AppData\Local\Temp\7bc9ea42a7c6dfa968d75090ccbf46bf98859f7e38a6370f3a73592403dc1466N64.exe" /originalpath "C:\Users\Admin\AppData\Local\Temp\7bc9ea42a7c6dfa968d75090ccbf46bf98859f7e38a6370f3a73592403dc1466N.exe"
  2⤵
  - Drops file in Drivers directory
  - Sets service image path in registry
  - Executes dropped EXE
  - Modifies registry class
  - Suspicious behavior: LoadsDriver
  - Suspicious use of AdjustPrivilegeToken
  PID:748

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

3

T1082

System Location Discovery

1

T1614

System Language Discovery

1

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:\Program Files\Common Files\System\symsrv.dll.000

Filesize
175B

MD5
1130c911bf5db4b8f7cf9b6f4b457623

SHA1
48e734c4bc1a8b5399bff4954e54b268bde9d54c

SHA256
eba08cc8182f379392a97f542b350ea0dbbe5e4009472f35af20e3d857eafdf1

SHA512
94e2511ef2c53494c2aff0960266491ffc0e54e75185427d1ccedae27c286992c754ca94cbb0c9ea36e3f04cd4eb7f032c551cf2d4b309f292906303f1a75fa0

Download Submit
C:\Users\Admin\AppData\Local\Temp\7bc9ea42a7c6dfa968d75090ccbf46bf98859f7e38a6370f3a73592403dc1466N64.exe

Filesize
1.1MB

MD5
11b0b711d25b7b047f1f7f08de19c102

SHA1
8b298412ec523b7d261b460682688d903a226a89

SHA256
eeb9eee57fc9198c95b8a8a762ffb7d4959363ef2747d3271d53b32c8f7f0e49

SHA512
58c562458795fa7b10d61b186b1c974b224c2eeee1b25d1216b0bc64ccfcc52808506bcfb8589ac7c152772d62ccfd8e2958f41691529e81b7eefc3d93ea6382

Download Submit
memory/5012-3-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/5012-74-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/5012-72-0x0000000000320000-0x0000000000537000-memory.dmp

Filesize
2.1MB

Download
memory/5012-80-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/5012-86-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/5012-99-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads