floxif | cd815791fd1eb8848f80fbed218eee2b528c318a8ae0e4f47352ab67208f51b2

General

Target

cd815791fd1eb8848f80fbed218eee2b528c318a8ae0e4f47352ab67208f51b2N.exe
Size

672KB
MD5

9bb5209a5492fb2cf086526a3531a410
SHA1

56844c3775e2e6f8c18c2cdb444e6ca623710d4a
SHA256

cd815791fd1eb8848f80fbed218eee2b528c318a8ae0e4f47352ab67208f51b2
SHA512

7b242b38132d0c851cf1d343901ce8020c0c574e6d94c01bd9e3d4d5775e24a77ddaa98f8f22ac33b5aabb1bb1e301651ae390556bc3ef527a1031f4694eb0de
SSDEEP

12288:uYV6MorX7qO+C3QHO9FQVHPF51jgcE7px7r5UBzzhB1CZHxx9jLkc/VABjvrEH7I:NBd9HGaVHjFCZX9z/VirEH7I

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/0x000c000000023b0b-2.dat	floxif

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral2/files/0x000c000000023b0b-2.dat	acprotect

Loads dropped DLL 1 IoCs

pid	Process
3700	cd815791fd1eb8848f80fbed218eee2b528c318a8ae0e4f47352ab67208f51b2N.exe

Enumerates connected drives 3 TTPs 23 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)	\??\i:	cd815791fd1eb8848f80fbed218eee2b528c318a8ae0e4f47352ab67208f51b2N.exe
File opened (read-only)	\??\o:	cd815791fd1eb8848f80fbed218eee2b528c318a8ae0e4f47352ab67208f51b2N.exe
File opened (read-only)	\??\r:	cd815791fd1eb8848f80fbed218eee2b528c318a8ae0e4f47352ab67208f51b2N.exe
File opened (read-only)	\??\z:	cd815791fd1eb8848f80fbed218eee2b528c318a8ae0e4f47352ab67208f51b2N.exe
File opened (read-only)	\??\a:	cd815791fd1eb8848f80fbed218eee2b528c318a8ae0e4f47352ab67208f51b2N.exe
File opened (read-only)	\??\q:	cd815791fd1eb8848f80fbed218eee2b528c318a8ae0e4f47352ab67208f51b2N.exe
File opened (read-only)	\??\s:	cd815791fd1eb8848f80fbed218eee2b528c318a8ae0e4f47352ab67208f51b2N.exe
File opened (read-only)	\??\t:	cd815791fd1eb8848f80fbed218eee2b528c318a8ae0e4f47352ab67208f51b2N.exe
File opened (read-only)	\??\w:	cd815791fd1eb8848f80fbed218eee2b528c318a8ae0e4f47352ab67208f51b2N.exe
File opened (read-only)	\??\x:	cd815791fd1eb8848f80fbed218eee2b528c318a8ae0e4f47352ab67208f51b2N.exe
File opened (read-only)	\??\g:	cd815791fd1eb8848f80fbed218eee2b528c318a8ae0e4f47352ab67208f51b2N.exe
File opened (read-only)	\??\h:	cd815791fd1eb8848f80fbed218eee2b528c318a8ae0e4f47352ab67208f51b2N.exe
File opened (read-only)	\??\k:	cd815791fd1eb8848f80fbed218eee2b528c318a8ae0e4f47352ab67208f51b2N.exe
File opened (read-only)	\??\l:	cd815791fd1eb8848f80fbed218eee2b528c318a8ae0e4f47352ab67208f51b2N.exe
File opened (read-only)	\??\n:	cd815791fd1eb8848f80fbed218eee2b528c318a8ae0e4f47352ab67208f51b2N.exe
File opened (read-only)	\??\u:	cd815791fd1eb8848f80fbed218eee2b528c318a8ae0e4f47352ab67208f51b2N.exe
File opened (read-only)	\??\v:	cd815791fd1eb8848f80fbed218eee2b528c318a8ae0e4f47352ab67208f51b2N.exe
File opened (read-only)	\??\y:	cd815791fd1eb8848f80fbed218eee2b528c318a8ae0e4f47352ab67208f51b2N.exe
File opened (read-only)	\??\e:	cd815791fd1eb8848f80fbed218eee2b528c318a8ae0e4f47352ab67208f51b2N.exe
File opened (read-only)	\??\b:	cd815791fd1eb8848f80fbed218eee2b528c318a8ae0e4f47352ab67208f51b2N.exe
File opened (read-only)	\??\j:	cd815791fd1eb8848f80fbed218eee2b528c318a8ae0e4f47352ab67208f51b2N.exe
File opened (read-only)	\??\m:	cd815791fd1eb8848f80fbed218eee2b528c318a8ae0e4f47352ab67208f51b2N.exe
File opened (read-only)	\??\p:	cd815791fd1eb8848f80fbed218eee2b528c318a8ae0e4f47352ab67208f51b2N.exe

AutoIT Executable 1 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral2/memory/3700-21-0x00000000009F0000-0x0000000000B47000-memory.dmp	autoit_exe

UPX packed file 9 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3700-0-0x00000000009F0000-0x0000000000B47000-memory.dmp	upx
behavioral2/files/0x000c000000023b0b-2.dat	upx
behavioral2/memory/3700-4-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral2/memory/3700-21-0x00000000009F0000-0x0000000000B47000-memory.dmp	upx
behavioral2/memory/3700-22-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral2/memory/3700-24-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral2/memory/3700-30-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral2/memory/3700-36-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral2/memory/3700-49-0x0000000010000000-0x0000000010030000-memory.dmp	upx

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\System\symsrv.dll	cd815791fd1eb8848f80fbed218eee2b528c318a8ae0e4f47352ab67208f51b2N.exe
File created	\??\c:\program files\common files\system\symsrv.dll.000	cd815791fd1eb8848f80fbed218eee2b528c318a8ae0e4f47352ab67208f51b2N.exe

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	cd815791fd1eb8848f80fbed218eee2b528c318a8ae0e4f47352ab67208f51b2N.exe

Checks SCSI registry key(s) 3 TTPs 4 IoCs

SCSI information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\DISK&VEN_WDC&PROD_WDS100T2B0A\4&215468A5&0&000000	vds.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\FriendlyName	vds.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CDROM&VEN_QEMU&PROD_QEMU_DVD-ROM\4&215468A5&0&010000	vds.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_QEMU&Prod_QEMU_DVD-ROM\4&215468a5&0&010000\FriendlyName	vds.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
3700	cd815791fd1eb8848f80fbed218eee2b528c318a8ae0e4f47352ab67208f51b2N.exe
3700	cd815791fd1eb8848f80fbed218eee2b528c318a8ae0e4f47352ab67208f51b2N.exe
3700	cd815791fd1eb8848f80fbed218eee2b528c318a8ae0e4f47352ab67208f51b2N.exe
3700	cd815791fd1eb8848f80fbed218eee2b528c318a8ae0e4f47352ab67208f51b2N.exe
3700	cd815791fd1eb8848f80fbed218eee2b528c318a8ae0e4f47352ab67208f51b2N.exe
3700	cd815791fd1eb8848f80fbed218eee2b528c318a8ae0e4f47352ab67208f51b2N.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3700	cd815791fd1eb8848f80fbed218eee2b528c318a8ae0e4f47352ab67208f51b2N.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3700	cd815791fd1eb8848f80fbed218eee2b528c318a8ae0e4f47352ab67208f51b2N.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3700 wrote to memory of 3368	3700	cd815791fd1eb8848f80fbed218eee2b528c318a8ae0e4f47352ab67208f51b2N.exe	83
PID 3700 wrote to memory of 3368	3700	cd815791fd1eb8848f80fbed218eee2b528c318a8ae0e4f47352ab67208f51b2N.exe	83
PID 3368 wrote to memory of 2364	3368	cmd.exe	85
PID 3368 wrote to memory of 2364	3368	cmd.exe	85

C:\Users\Admin\AppData\Local\Temp\cd815791fd1eb8848f80fbed218eee2b528c318a8ae0e4f47352ab67208f51b2N.exe
"C:\Users\Admin\AppData\Local\Temp\cd815791fd1eb8848f80fbed218eee2b528c318a8ae0e4f47352ab67208f51b2N.exe"
1⤵
- Loads dropped DLL
- Enumerates connected drives
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3700
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c diskpart /s Script.txt > log.txt
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3368
- - C:\Windows\system32\diskpart.exe
    diskpart /s Script.txt
    3⤵
    PID:2364

C:\Windows\System32\vdsldr.exe
C:\Windows\System32\vdsldr.exe -Embedding
1⤵
PID:1576

C:\Windows\System32\vds.exe
C:\Windows\System32\vds.exe
1⤵
- Checks SCSI registry key(s)
PID:1260

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

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
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\T.Diskpart\Script.txt

Filesize
11B

MD5
66e1cfbc5c9185251ff5a869d5b1a545

SHA1
94b1a6e9b6be538f595f9049365604dc45af9bda

SHA256
9644150875d4825f8e823f22c4103115ed26e8fecc1c1bf54da77f976d6eda44

SHA512
137197e17a26df0dec8dd1cb15e7a723b8e74cc888912820dc6dac518a0c4becc277d67c5e2c069d5dd9ea1e33f1970080a717fca63697483d1795d988d4554f

Download Submit
C:\Users\Admin\AppData\Local\Temp\T.Diskpart\log.txt

Filesize
274B

MD5
3f854b5d84006506f461063f8619063b

SHA1
74c9b0632206a0907e3a2af4d7522595f209d57e

SHA256
a53c8e77ed6499b0d1874221c4bf6610ed8fc388352deab7c82028855524b442

SHA512
d950e1dfb3e8e20c35d2d0a42040cc7d19f54c0cc6916dd6c81f07d4769cbd6179ebecdf4e418852ebf099a33b688d5564274ae1c8e6baa09a298533befc0083

Download Submit
memory/3700-21-0x00000000009F0000-0x0000000000B47000-memory.dmp

Filesize
1.3MB

Download
memory/3700-6-0x0000000000B07000-0x0000000000B08000-memory.dmp

Filesize
4KB

Download
memory/3700-0-0x00000000009F0000-0x0000000000B47000-memory.dmp

Filesize
1.3MB

Download
memory/3700-22-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/3700-24-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/3700-30-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/3700-4-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/3700-36-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/3700-49-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads