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
behavioral1/files/0x000c00000001225c-2.dat	floxif

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral1/files/0x000c00000001225c-2.dat	acprotect

Loads dropped DLL 1 IoCs

pid	Process
2376	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)	\??\u:	cd815791fd1eb8848f80fbed218eee2b528c318a8ae0e4f47352ab67208f51b2N.exe
File opened (read-only)	\??\x:	cd815791fd1eb8848f80fbed218eee2b528c318a8ae0e4f47352ab67208f51b2N.exe
File opened (read-only)	\??\a:	cd815791fd1eb8848f80fbed218eee2b528c318a8ae0e4f47352ab67208f51b2N.exe
File opened (read-only)	\??\h:	cd815791fd1eb8848f80fbed218eee2b528c318a8ae0e4f47352ab67208f51b2N.exe
File opened (read-only)	\??\t:	cd815791fd1eb8848f80fbed218eee2b528c318a8ae0e4f47352ab67208f51b2N.exe
File opened (read-only)	\??\m:	cd815791fd1eb8848f80fbed218eee2b528c318a8ae0e4f47352ab67208f51b2N.exe
File opened (read-only)	\??\q:	cd815791fd1eb8848f80fbed218eee2b528c318a8ae0e4f47352ab67208f51b2N.exe
File opened (read-only)	\??\r:	cd815791fd1eb8848f80fbed218eee2b528c318a8ae0e4f47352ab67208f51b2N.exe
File opened (read-only)	\??\s:	cd815791fd1eb8848f80fbed218eee2b528c318a8ae0e4f47352ab67208f51b2N.exe
File opened (read-only)	\??\e:	cd815791fd1eb8848f80fbed218eee2b528c318a8ae0e4f47352ab67208f51b2N.exe
File opened (read-only)	\??\g:	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)	\??\o:	cd815791fd1eb8848f80fbed218eee2b528c318a8ae0e4f47352ab67208f51b2N.exe
File opened (read-only)	\??\p:	cd815791fd1eb8848f80fbed218eee2b528c318a8ae0e4f47352ab67208f51b2N.exe
File opened (read-only)	\??\b:	cd815791fd1eb8848f80fbed218eee2b528c318a8ae0e4f47352ab67208f51b2N.exe
File opened (read-only)	\??\i:	cd815791fd1eb8848f80fbed218eee2b528c318a8ae0e4f47352ab67208f51b2N.exe
File opened (read-only)	\??\j:	cd815791fd1eb8848f80fbed218eee2b528c318a8ae0e4f47352ab67208f51b2N.exe
File opened (read-only)	\??\z:	cd815791fd1eb8848f80fbed218eee2b528c318a8ae0e4f47352ab67208f51b2N.exe
File opened (read-only)	\??\v:	cd815791fd1eb8848f80fbed218eee2b528c318a8ae0e4f47352ab67208f51b2N.exe
File opened (read-only)	\??\w:	cd815791fd1eb8848f80fbed218eee2b528c318a8ae0e4f47352ab67208f51b2N.exe
File opened (read-only)	\??\y:	cd815791fd1eb8848f80fbed218eee2b528c318a8ae0e4f47352ab67208f51b2N.exe

AutoIT Executable 1 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral1/memory/2376-19-0x00000000008F0000-0x0000000000A47000-memory.dmp	autoit_exe

UPX packed file 13 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2376-0-0x00000000008F0000-0x0000000000A47000-memory.dmp	upx
behavioral1/memory/2376-4-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral1/files/0x000c00000001225c-2.dat	upx
behavioral1/memory/2376-19-0x00000000008F0000-0x0000000000A47000-memory.dmp	upx
behavioral1/memory/2376-20-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral1/memory/2376-22-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral1/memory/2376-26-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral1/memory/2376-30-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral1/memory/2376-34-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral1/memory/2376-38-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral1/memory/2376-42-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral1/memory/2376-44-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral1/memory/2376-52-0x0000000010000000-0x0000000010030000-memory.dmp	upx

Drops file in Program Files directory 2 IoCs

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

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2376	cd815791fd1eb8848f80fbed218eee2b528c318a8ae0e4f47352ab67208f51b2N.exe
2376	cd815791fd1eb8848f80fbed218eee2b528c318a8ae0e4f47352ab67208f51b2N.exe
2376	cd815791fd1eb8848f80fbed218eee2b528c318a8ae0e4f47352ab67208f51b2N.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2376	cd815791fd1eb8848f80fbed218eee2b528c318a8ae0e4f47352ab67208f51b2N.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2376	cd815791fd1eb8848f80fbed218eee2b528c318a8ae0e4f47352ab67208f51b2N.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2376 wrote to memory of 1952	2376	cd815791fd1eb8848f80fbed218eee2b528c318a8ae0e4f47352ab67208f51b2N.exe	29
PID 2376 wrote to memory of 1952	2376	cd815791fd1eb8848f80fbed218eee2b528c318a8ae0e4f47352ab67208f51b2N.exe	29
PID 2376 wrote to memory of 1952	2376	cd815791fd1eb8848f80fbed218eee2b528c318a8ae0e4f47352ab67208f51b2N.exe	29
PID 2376 wrote to memory of 1952	2376	cd815791fd1eb8848f80fbed218eee2b528c318a8ae0e4f47352ab67208f51b2N.exe	29
PID 1952 wrote to memory of 3020	1952	cmd.exe	31
PID 1952 wrote to memory of 3020	1952	cmd.exe	31
PID 1952 wrote to memory of 3020	1952	cmd.exe	31

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:2376
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c diskpart /s Script.txt > log.txt
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1952
- - C:\Windows\system32\diskpart.exe
    diskpart /s Script.txt
    3⤵
    PID:3020

C:\Windows\System32\vdsldr.exe
C:\Windows\System32\vdsldr.exe -Embedding
1⤵
PID:2952

C:\Windows\System32\vds.exe
C:\Windows\System32\vds.exe
1⤵
PID:2520

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

1

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.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
276B

MD5
a1ea8487d5c8711199123f7298f8b4b7

SHA1
602c4eea93ccef7b39be2879de75d6988c88cd77

SHA256
8545db96288bb874cdfbca3eba68614cb7ede39662139c26cb24890d485444b7

SHA512
f4bcbfeaeb12de7d186c4016ef94e32b60370cadeec3aec55d002ced47e397ee82c5a08b1461090959292c513e7fe18b1867f3c12d9c566b1143e8ab96e52007

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

Filesize
67KB

MD5
7574cf2c64f35161ab1292e2f532aabf

SHA1
14ba3fa927a06224dfe587014299e834def4644f

SHA256
de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085

SHA512
4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

Download Submit
memory/2376-20-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/2376-26-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/2376-19-0x00000000008F0000-0x0000000000A47000-memory.dmp

Filesize
1.3MB

Download
memory/2376-0-0x00000000008F0000-0x0000000000A47000-memory.dmp

Filesize
1.3MB

Download
memory/2376-22-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/2376-6-0x0000000000A07000-0x0000000000A08000-memory.dmp

Filesize
4KB

Download
memory/2376-30-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/2376-34-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/2376-4-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/2376-38-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/2376-42-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/2376-44-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/2376-52-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download

Analysis

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