floxif | 504a223f37d9f7602f656dc532d99631d2ea4a0569a87e7458fb6c2f41fe19dd

General

Target

0b69282e5c27a58d7a7e96890fef4c70N.exe
Size

231KB
MD5

0b69282e5c27a58d7a7e96890fef4c70
SHA1

2973e5e1e0c4305f420b7b3e06b6298b0dcdadf3
SHA256

504a223f37d9f7602f656dc532d99631d2ea4a0569a87e7458fb6c2f41fe19dd
SHA512

b62f6e01196e8270da8c81e39e627b598fac1dc32707fe52c1bc88b0e454d007d1dce6219b883e688de118cdee294bc87cb9701fb561df4d05e5665c6b1b1fd9
SSDEEP

6144:uQ5hOl0WpmgRi4nwL0zHcStWxXQHBV+UdvrEFp7hKD1:uQmjmKLnw0z8wgXQHBjvrEH72

Score

10^/10

floxif backdoor discovery persistence privilege_escalation trojan upx

Malware Config

Signatures

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/0x00090000000120f9-2.dat	floxif

Event Triggered Execution: AppInit DLLs 1 TTPs
Adversaries may establish persistence and/or elevate privileges by executing malicious content triggered by AppInit DLLs loaded into processes.
persistence privilege_escalation

AppInit DLLs
T1546.010

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral1/files/0x00090000000120f9-2.dat	acprotect

Loads dropped DLL 1 IoCs

pid	Process
1976	0b69282e5c27a58d7a7e96890fef4c70N.exe

UPX packed file 11 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1976-1-0x0000000000400000-0x000000000046B000-memory.dmp	upx
behavioral1/files/0x00090000000120f9-2.dat	upx
behavioral1/memory/1976-4-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral1/memory/1976-7-0x0000000000400000-0x000000000046B000-memory.dmp	upx
behavioral1/memory/1976-13-0x0000000000400000-0x000000000046B000-memory.dmp	upx
behavioral1/memory/1976-14-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral1/memory/1976-17-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral1/memory/1976-23-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral1/memory/1976-27-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral1/memory/1976-33-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral1/memory/1976-35-0x0000000010000000-0x0000000010030000-memory.dmp	upx

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:	0b69282e5c27a58d7a7e96890fef4c70N.exe

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\System\symsrv.dll	0b69282e5c27a58d7a7e96890fef4c70N.exe
File created	\??\c:\program files\common files\system\symsrv.dll.000	0b69282e5c27a58d7a7e96890fef4c70N.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	0b69282e5c27a58d7a7e96890fef4c70N.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1976	0b69282e5c27a58d7a7e96890fef4c70N.exe
1976	0b69282e5c27a58d7a7e96890fef4c70N.exe
1976	0b69282e5c27a58d7a7e96890fef4c70N.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1976	0b69282e5c27a58d7a7e96890fef4c70N.exe

C:\Users\Admin\AppData\Local\Temp\0b69282e5c27a58d7a7e96890fef4c70N.exe
"C:\Users\Admin\AppData\Local\Temp\0b69282e5c27a58d7a7e96890fef4c70N.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:1976

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Event Triggered Execution

1

T1546

AppInit DLLs

1

T1546.010

Privilege Escalation

Event Triggered Execution

1

T1546

AppInit DLLs

1

T1546.010

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.000

Filesize
175B

MD5
1130c911bf5db4b8f7cf9b6f4b457623

SHA1
48e734c4bc1a8b5399bff4954e54b268bde9d54c

SHA256
eba08cc8182f379392a97f542b350ea0dbbe5e4009472f35af20e3d857eafdf1

SHA512
94e2511ef2c53494c2aff0960266491ffc0e54e75185427d1ccedae27c286992c754ca94cbb0c9ea36e3f04cd4eb7f032c551cf2d4b309f292906303f1a75fa0

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

Filesize
67KB

MD5
7574cf2c64f35161ab1292e2f532aabf

SHA1
14ba3fa927a06224dfe587014299e834def4644f

SHA256
de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085

SHA512
4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

Download Submit
memory/1976-14-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/1976-6-0x000000000044C000-0x0000000000450000-memory.dmp

Filesize
16KB

Download
memory/1976-7-0x0000000000400000-0x000000000046B000-memory.dmp

Filesize
428KB

Download
memory/1976-13-0x0000000000400000-0x000000000046B000-memory.dmp

Filesize
428KB

Download
memory/1976-1-0x0000000000400000-0x000000000046B000-memory.dmp

Filesize
428KB

Download
memory/1976-17-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/1976-23-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/1976-27-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/1976-4-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/1976-33-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/1976-35-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download

Analysis

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