floxif | 502d374b2967fe0ac0057e620f5b543671df21d1c7d414d8a4bfdc3922a392cc

General

Target

502d374b2967fe0ac0057e620f5b543671df21d1c7d414d8a4bfdc3922a392cc.exe
Size

9.8MB
MD5

18034a901eaf8fb3717e23a57ee81d8c
SHA1

a3673ad2b501a88a198a79a89e87e538a65905aa
SHA256

502d374b2967fe0ac0057e620f5b543671df21d1c7d414d8a4bfdc3922a392cc
SHA512

dac4d7ba866cd1f152d50e915ef60c66b69d1d241effd9f6063087ebe9e301f1f08e5f512d638b36ffd7a26ec42d49d86553cb9141d36b45b9a2643110758552
SSDEEP

196608:qwOYT73A/PCDoWzN87yZqLcbUm4CzknrnbELh19M8pjx6gO0EMT2:Fl7SqDhqyZqLwqqk3E39npjZO0Em2

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/0x000c000000023b29-1.dat	floxif

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral2/files/0x000c000000023b29-1.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-1-5-21-2436272344-4274332273-444425594-1000\Control Panel\International\Geo\Nation	gpuz_installer.tmp

Executes dropped EXE 3 IoCs

pid	Process
1200	gpuz_installer.exe
3668	gpuz_installer.tmp
2464	GPU-Z.exe

Loads dropped DLL 2 IoCs

pid	Process
2912	502d374b2967fe0ac0057e620f5b543671df21d1c7d414d8a4bfdc3922a392cc.exe
2912	502d374b2967fe0ac0057e620f5b543671df21d1c7d414d8a4bfdc3922a392cc.exe

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

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:	502d374b2967fe0ac0057e620f5b543671df21d1c7d414d8a4bfdc3922a392cc.exe

UPX packed file 14 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000c000000023b29-1.dat	upx
behavioral2/memory/2912-5-0x0000000000400000-0x00000000030E8000-memory.dmp	upx
behavioral2/memory/2912-7-0x0000000000400000-0x00000000030E8000-memory.dmp	upx
behavioral2/memory/2912-10-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral2/memory/2912-14-0x0000000000400000-0x00000000030E8000-memory.dmp	upx
behavioral2/files/0x000e000000023b85-19.dat	upx
behavioral2/memory/2912-32-0x0000000000400000-0x00000000030E8000-memory.dmp	upx
behavioral2/memory/2912-36-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral2/memory/2912-44-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral2/memory/2912-68-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral2/memory/2464-79-0x0000000000930000-0x0000000003618000-memory.dmp	upx
behavioral2/memory/2912-84-0x0000000000400000-0x00000000030E8000-memory.dmp	upx
behavioral2/memory/2912-86-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral2/memory/2464-95-0x0000000000930000-0x0000000003618000-memory.dmp	upx

Drops file in Program Files directory 9 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\GPU-Z\unins000.dat	gpuz_installer.tmp
File opened for modification	C:\Program Files (x86)\Common Files\microsoft shared\ink\tiptsf.dll	502d374b2967fe0ac0057e620f5b543671df21d1c7d414d8a4bfdc3922a392cc.exe
File created	\??\c:\program files\common files\system\symsrv.dll.000	502d374b2967fe0ac0057e620f5b543671df21d1c7d414d8a4bfdc3922a392cc.exe
File created	C:\Program Files (x86)\GPU-Z\unins000.dat	gpuz_installer.tmp
File created	C:\Program Files (x86)\GPU-Z\is-COV7K.tmp	gpuz_installer.tmp
File created	C:\Program Files (x86)\Common Files\microsoft shared\ink\tiptsf.dll.tmp	502d374b2967fe0ac0057e620f5b543671df21d1c7d414d8a4bfdc3922a392cc.exe
File created	C:\Program Files\Common Files\System\symsrv.dll	502d374b2967fe0ac0057e620f5b543671df21d1c7d414d8a4bfdc3922a392cc.exe
File opened for modification	C:\Program Files (x86)\GPU-Z\GPU-Z.exe	gpuz_installer.tmp
File created	C:\Program Files (x86)\GPU-Z\is-MA7DJ.tmp	gpuz_installer.tmp

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 4 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	gpuz_installer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	gpuz_installer.tmp
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	GPU-Z.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	502d374b2967fe0ac0057e620f5b543671df21d1c7d414d8a4bfdc3922a392cc.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2912	502d374b2967fe0ac0057e620f5b543671df21d1c7d414d8a4bfdc3922a392cc.exe
2912	502d374b2967fe0ac0057e620f5b543671df21d1c7d414d8a4bfdc3922a392cc.exe
3668	gpuz_installer.tmp
3668	gpuz_installer.tmp
2912	502d374b2967fe0ac0057e620f5b543671df21d1c7d414d8a4bfdc3922a392cc.exe
2912	502d374b2967fe0ac0057e620f5b543671df21d1c7d414d8a4bfdc3922a392cc.exe

Suspicious behavior: LoadsDriver 1 IoCs

pid	Process
660	Process not Found

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2912	502d374b2967fe0ac0057e620f5b543671df21d1c7d414d8a4bfdc3922a392cc.exe
Token: SeDebugPrivilege	2912	502d374b2967fe0ac0057e620f5b543671df21d1c7d414d8a4bfdc3922a392cc.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
3668	gpuz_installer.tmp

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
2912	502d374b2967fe0ac0057e620f5b543671df21d1c7d414d8a4bfdc3922a392cc.exe
2464	GPU-Z.exe
2464	GPU-Z.exe
2464	GPU-Z.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2912 wrote to memory of 1200	2912	502d374b2967fe0ac0057e620f5b543671df21d1c7d414d8a4bfdc3922a392cc.exe	86
PID 2912 wrote to memory of 1200	2912	502d374b2967fe0ac0057e620f5b543671df21d1c7d414d8a4bfdc3922a392cc.exe	86
PID 2912 wrote to memory of 1200	2912	502d374b2967fe0ac0057e620f5b543671df21d1c7d414d8a4bfdc3922a392cc.exe	86
PID 1200 wrote to memory of 3668	1200	gpuz_installer.exe	87
PID 1200 wrote to memory of 3668	1200	gpuz_installer.exe	87
PID 1200 wrote to memory of 3668	1200	gpuz_installer.exe	87
PID 3668 wrote to memory of 2464	3668	gpuz_installer.tmp	91
PID 3668 wrote to memory of 2464	3668	gpuz_installer.tmp	91
PID 3668 wrote to memory of 2464	3668	gpuz_installer.tmp	91

C:\Users\Admin\AppData\Local\Temp\502d374b2967fe0ac0057e620f5b543671df21d1c7d414d8a4bfdc3922a392cc.exe
"C:\Users\Admin\AppData\Local\Temp\502d374b2967fe0ac0057e620f5b543671df21d1c7d414d8a4bfdc3922a392cc.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
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2912
- C:\Users\Admin\AppData\Local\Temp\gpuz_installer.exe
  "C:\Users\Admin\AppData\Local\Temp\\gpuz_installer.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1200
- - C:\Users\Admin\AppData\Local\Temp\is-GQ5M3.tmp\gpuz_installer.tmp
    "C:\Users\Admin\AppData\Local\Temp\is-GQ5M3.tmp\gpuz_installer.tmp" /SL5="$80238,832512,832512,C:\Users\Admin\AppData\Local\Temp\gpuz_installer.exe"
    3⤵
    - Checks computer location settings
    - Executes dropped EXE
    - Drops file in Program Files directory
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of FindShellTrayWindow
    - Suspicious use of WriteProcessMemory
    PID:3668
  - - C:\Program Files (x86)\GPU-Z\GPU-Z.exe
      "C:\Program Files (x86)\GPU-Z\GPU-Z.exe"
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      Suspicious use of SetWindowsHookEx
      PID:2464

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

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

Replay Monitor

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Downloads

C:\Program Files (x86)\Common Files\Microsoft Shared\ink\tiptsf.dll.tmp

Filesize
589KB

MD5
1f962bf087e2e95a36dd453c7ab6707a

SHA1
58aabdde1fead45c819c17996ae1af5863dfaa85

SHA256
0562e5a48381ffe49e6de435cca7369f4546858890f4a177d0d9af924c8e2195

SHA512
1eb59a6423204f8b33cc7d547fb963e064e209a67ec825c94e7cbd536649e566a91ccc6af03b831378cf519848f7a71396c854ed7f42bb08ea0c1a4ce428b3d6

Download Submit
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\A1D26E2\B6DC348B60.tmp

Filesize
9.7MB

MD5
b82658cbad5e3d2c7190b722da5fcd83

SHA1
1cb6cdbb6e00f9a2aa8524c0b6553282f27b6f58

SHA256
96aabf20230d32fbdbe0953ac75df213b3930eec357143dc69cdf88e7b8c2b7d

SHA512
b668acf14931c8b931e692dd54e0b9f71b901e1442168a10d0309e21e1c1aeea6590cdbd2b5e05217c3438f9f59061da557ebfc32c21def37f4d205fd79fa05e

Download Submit
C:\Users\Admin\AppData\Local\Temp\GPU-Z-v2.sys

Filesize
50KB

MD5
d4320487bf3021f2f2afcfc43d652a69

SHA1
f94503fea3fa7c526a70187444affd7f0e0e8926

SHA256
9af0b89c5c54eb66e5a660b61aee7c1a25b1c92e20a310d8b16552abcf90c0b5

SHA512
38cbfb45ebfbb95a5bb67060792331fde6ef471e1e98434027d73025a10c8dd071141fe44c268015b73855fda1380c8b6024a08cb4fec6b443ae24d38fdcf6e6

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

Filesize
1.6MB

MD5
adb15bf5d30c7139d1a4c4f161ad80d0

SHA1
57b97530e668d75e1b0451822ae36897f889dc65

SHA256
ffe80b378485e6ba258911f5dedf292640ee378221f62eec9d60e84914bd0798

SHA512
014f4318c40009127671dac7d5826ca81bab813a3cdf4e998ea96861aa6c57e3366e47c8961b75834d877bc4cdeff5476d85993b67d4e00e99d511045f0c7638

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-GQ5M3.tmp\gpuz_installer.tmp

Filesize
3.1MB

MD5
4c9111b5058cb0a71da1c566e6b15de5

SHA1
cdf0963572c509ecc8651a7081dd5aca44886007

SHA256
ff02cd92b07585423ef7bdd0a873374922767fe21f93fcebc24181a5ee2111fa

SHA512
3dc28a3f0a1404b67dd5374e2c5e13f1c1b0250c1e07666dbbd4bf31b400ee549c3beb7b872dd7d10dd54ce401b01a362a59bca54b2c7209cbedd97caa7cea46

Download Submit
memory/1200-39-0x0000000000400000-0x00000000004D8000-memory.dmp

Filesize
864KB

Download
memory/1200-26-0x0000000000400000-0x00000000004D8000-memory.dmp

Filesize
864KB

Download
memory/1200-23-0x0000000000400000-0x00000000004D8000-memory.dmp

Filesize
864KB

Download
memory/1200-83-0x0000000000400000-0x00000000004D8000-memory.dmp

Filesize
864KB

Download
memory/2464-95-0x0000000000930000-0x0000000003618000-memory.dmp

Filesize
44.9MB

Download
memory/2464-79-0x0000000000930000-0x0000000003618000-memory.dmp

Filesize
44.9MB

Download
memory/2912-68-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/2912-7-0x0000000000400000-0x00000000030E8000-memory.dmp

Filesize
44.9MB

Download
memory/2912-44-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/2912-6-0x00000000030D1000-0x00000000030D2000-memory.dmp

Filesize
4KB

Download
memory/2912-14-0x0000000000400000-0x00000000030E8000-memory.dmp

Filesize
44.9MB

Download
memory/2912-5-0x0000000000400000-0x00000000030E8000-memory.dmp

Filesize
44.9MB

Download
memory/2912-10-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/2912-36-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/2912-86-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/2912-32-0x0000000000400000-0x00000000030E8000-memory.dmp

Filesize
44.9MB

Download
memory/2912-84-0x0000000000400000-0x00000000030E8000-memory.dmp

Filesize
44.9MB

Download
memory/3668-40-0x0000000000400000-0x000000000071C000-memory.dmp

Filesize
3.1MB

Download
memory/3668-81-0x0000000000400000-0x000000000071C000-memory.dmp

Filesize
3.1MB

Download
memory/3668-60-0x0000000000400000-0x000000000071C000-memory.dmp

Filesize
3.1MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads