floxif | 529df1c138c0d318d99c7382f3dcb436ae6c35867a8817b77cdf414e62931c09

General

Target

529df1c138c0d318d99c7382f3dcb436ae6c35867a8817b77cdf414e62931c09.exe
Size

554KB
MD5

781e95c9482fd23e0b76231913f2e2af
SHA1

e5b32570c837b1dfc2ee5d7edba98e2505a53939
SHA256

529df1c138c0d318d99c7382f3dcb436ae6c35867a8817b77cdf414e62931c09
SHA512

cb0918c48d5c97f114e4c17f2df9a212bb4f1f49b35d8075f93ca4314fc59ef04b7217fa97c3f6aab6a3b50b9babcb167bf08b4db035b1d095d8bf8b9b86b035
SSDEEP

12288:dNaDfsMMSsMMfBvMcsCMcs/7Ekx0+RT/S1QLUtnu3R1MZEJIXBjvrEH7g:dIDfsMMSsMMfBvMcsCMcs/h0+RT/p4tx

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/0x0011000000011c2c-1.dat	floxif

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral1/files/0x0011000000011c2c-1.dat	acprotect

Loads dropped DLL 1 IoCs

pid	Process
2272	529df1c138c0d318d99c7382f3dcb436ae6c35867a8817b77cdf414e62931c09.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:	529df1c138c0d318d99c7382f3dcb436ae6c35867a8817b77cdf414e62931c09.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral1/files/0x0011000000011c2c-1.dat	upx
behavioral1/memory/2272-3-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral1/memory/2272-30-0x0000000010000000-0x0000000010030000-memory.dmp	upx

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\System\symsrv.dll	529df1c138c0d318d99c7382f3dcb436ae6c35867a8817b77cdf414e62931c09.exe
File created	\??\c:\program files\common files\system\symsrv.dll.000	529df1c138c0d318d99c7382f3dcb436ae6c35867a8817b77cdf414e62931c09.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	529df1c138c0d318d99c7382f3dcb436ae6c35867a8817b77cdf414e62931c09.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2272	529df1c138c0d318d99c7382f3dcb436ae6c35867a8817b77cdf414e62931c09.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2272	529df1c138c0d318d99c7382f3dcb436ae6c35867a8817b77cdf414e62931c09.exe
Token: SeDebugPrivilege	2272	529df1c138c0d318d99c7382f3dcb436ae6c35867a8817b77cdf414e62931c09.exe

C:\Users\Admin\AppData\Local\Temp\529df1c138c0d318d99c7382f3dcb436ae6c35867a8817b77cdf414e62931c09.exe
"C:\Users\Admin\AppData\Local\Temp\529df1c138c0d318d99c7382f3dcb436ae6c35867a8817b77cdf414e62931c09.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:2272

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:\Users\Admin\AppData\Local\Temp\mass.dat

Filesize
335B

MD5
dc9c30ec668ed2e5638505162d865a27

SHA1
9e44bbe2ab69decf2ca17d58efd209e99d01f7ce

SHA256
94a779a2c5839e72d777a1116e36cc90cb75e415893a626c49d84fc8ba777fcf

SHA512
a85a3ef7139959bdc0e3eeace45e03b6141e23acdfafde4ef305382e3533934c34c6609a2f79c61d206b02b9eb7ff53677b6f1691558babe87492763dabb536d

Download Submit
C:\Users\Admin\AppData\Local\Temp\mass.dat

Filesize
620B

MD5
b59bf61830d0982fcb7a6476b478309d

SHA1
4cbfc05a657daead154e69fde66bfc07cabace9e

SHA256
ccb0d25c0d41d1f34f3d31fc98df09595d76fb34b53c6affd3bff957392243fb

SHA512
e5ba86452d8686acf211a7590cd711db964209f6cb5a04bc2078c7f0acd235cef91ef1a7f06a1300328eb55360297ca1253c8cb71e3f919bddef5d815d784745

Download Submit
C:\Users\Admin\AppData\Local\Temp\mass.dat

Filesize
912B

MD5
eadbc8824685652e455a8878752c8ff8

SHA1
06610d1e673ad6c628b3994244affc6c2c716a94

SHA256
4b8b0095137cb1eb567e7ed35a4c13d68bc990d53cc87063d464851b8b84f4f7

SHA512
c11d44d6a8dfabc25805dbd5e31d9916c7dca6ac1ea476797ef17b8b61d8cd75285deb3ef0d7ae4bee050ed63a26fdb7bad0ac20a81504a1b7ca297b3f252d24

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

Filesize
67KB

MD5
7574cf2c64f35161ab1292e2f532aabf

SHA1
14ba3fa927a06224dfe587014299e834def4644f

SHA256
de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085

SHA512
4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

Download Submit
memory/2272-3-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/2272-5-0x000000000040A000-0x000000000040D000-memory.dmp

Filesize
12KB

Download
memory/2272-30-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download

Analysis

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