floxif | a191a7d996be959670329d452a119ab9f3046360d8f399aebc4f02c7eb02cd60

General

Target

a191a7d996be959670329d452a119ab9f3046360d8f399aebc4f02c7eb02cd60N.exe
Size

993KB
MD5

145ce192307e0acaa8c8d3389372d7e0
SHA1

2902eac9ac21b7b981ce1f7369b3408cf5d3f581
SHA256

a191a7d996be959670329d452a119ab9f3046360d8f399aebc4f02c7eb02cd60
SHA512

48ea5a79248569d7037208fefa09024138894436b8c10e79d350739c65ccb6bbc60e71f49f47de8c32e20ca0cfd5282782e6a825e05b2cc79765fa5fd663c8b0
SSDEEP

24576:T2KwafSfnqHVglk+VIRgmzI84WhMfnXsqtvlSKrEH7k:KKwafSyHoVgtzx6n8qtv0m

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/0x0007000000012117-1.dat	floxif

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral1/files/0x0007000000012117-1.dat	acprotect

Loads dropped DLL 2 IoCs

pid	Process
2696	a191a7d996be959670329d452a119ab9f3046360d8f399aebc4f02c7eb02cd60N.exe
2696	a191a7d996be959670329d452a119ab9f3046360d8f399aebc4f02c7eb02cd60N.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:	a191a7d996be959670329d452a119ab9f3046360d8f399aebc4f02c7eb02cd60N.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/files/0x0007000000012117-1.dat	upx
behavioral1/memory/2696-4-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral1/memory/2696-3-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2696-36-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2696-38-0x0000000010000000-0x0000000010030000-memory.dmp	upx

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\System\symsrv.dll	a191a7d996be959670329d452a119ab9f3046360d8f399aebc4f02c7eb02cd60N.exe
File created	\??\c:\program files\common files\system\symsrv.dll.000	a191a7d996be959670329d452a119ab9f3046360d8f399aebc4f02c7eb02cd60N.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	a191a7d996be959670329d452a119ab9f3046360d8f399aebc4f02c7eb02cd60N.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2696	a191a7d996be959670329d452a119ab9f3046360d8f399aebc4f02c7eb02cd60N.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2696	a191a7d996be959670329d452a119ab9f3046360d8f399aebc4f02c7eb02cd60N.exe

C:\Users\Admin\AppData\Local\Temp\a191a7d996be959670329d452a119ab9f3046360d8f399aebc4f02c7eb02cd60N.exe
"C:\Users\Admin\AppData\Local\Temp\a191a7d996be959670329d452a119ab9f3046360d8f399aebc4f02c7eb02cd60N.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
PID:2696

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:\Users\Admin\AppData\Local\Temp\7ZipSfx.000\JPGHider.exe

Filesize
228KB

MD5
f834ea4d49e8e757b19991d595fdb447

SHA1
198361dbd2c4d0b718af6618a0dc2964e2cf886f

SHA256
64ad7ed94e2a7c8ca84417f20dc076cb7b77977dba1a7f2403ee5d4479d5c005

SHA512
bd8a67951ae7f8842b5b3e38886c9f4446acd3b41b7ffcb4967b00dbf10faecbcbbb7507203ef55b5c847e3552b1ffc5048e70903ce387e5c9f789d879d7832e

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

Filesize
67KB

MD5
7574cf2c64f35161ab1292e2f532aabf

SHA1
14ba3fa927a06224dfe587014299e834def4644f

SHA256
de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085

SHA512
4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

Download Submit
\Users\Admin\AppData\Local\Temp\7ZipSfx.000\JPGHider.exe.tmp

Filesize
304KB

MD5
3eeabc74cb2e44862113eff095d89537

SHA1
2032cef5d5e0106a15d960e41c6b6fe27e379d1f

SHA256
d12ec7cb839ae45c03de9ebc6834ed1ef7ad36b274c7c27dcea0bf2e83942e32

SHA512
3c266effd024c374603d1b8228aa7b05dca7e5384a595870ced5923110c7ff07b6dfa75cd8e0351a5996c374a225a5555adc57333927cd3be513ed30631b1bd5

Download Submit
memory/2696-4-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/2696-3-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2696-36-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2696-38-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download

Analysis

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