floxif | b7c025073b59ee78cf04102574bb13afe9c56286026bb5aae8b51d01797a7793

General

Target

b7c025073b59ee78cf04102574bb13afe9c56286026bb5aae8b51d01797a7793.exe
Size

281KB
MD5

13a7e71ca69f3530f2df1fcc6048e341
SHA1

c1fb132de2c04eb32a0e6860193d9703a358b041
SHA256

b7c025073b59ee78cf04102574bb13afe9c56286026bb5aae8b51d01797a7793
SHA512

4fe8469922ed86c4b29d7b23965049eb92256f2d883af5ffbfaceb36ac6798a0abd7ad1860e53c6c8c66c96710e42ec75fb8b7a4f2f3e84b8d6a365cc07c3efb
SSDEEP

6144:BAIl/DRfkkPa3dM7B+GCyusQvMRlkM4RD/qzMfUx8:BAIlbRfkk26B+GCyUMRGM4h/qofc8

Score

10^/10

floxif backdoor discovery persistence privilege_escalation 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/0x000c000000012280-1.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/0x000c000000012280-1.dat	acprotect

Loads dropped DLL 2 IoCs

pid	Process
2324	b7c025073b59ee78cf04102574bb13afe9c56286026bb5aae8b51d01797a7793.exe
2084	arp.exe

Network Service Discovery 1 TTPs 1 IoCs

Attempt to gather information on host's network.

discovery

Network Service Discovery

T1046

pid	Process
2084	arp.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/files/0x000c000000012280-1.dat	upx
behavioral1/memory/2324-3-0x0000000010000000-0x0000000010033000-memory.dmp	upx
behavioral1/memory/2084-7-0x0000000010000000-0x0000000010033000-memory.dmp	upx
behavioral1/memory/2324-10-0x0000000010000000-0x0000000010033000-memory.dmp	upx
behavioral1/memory/2084-11-0x0000000010000000-0x0000000010033000-memory.dmp	upx

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\System\symsrv.dll	b7c025073b59ee78cf04102574bb13afe9c56286026bb5aae8b51d01797a7793.exe

System Location Discovery: System Language Discovery 1 TTPs 2 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	b7c025073b59ee78cf04102574bb13afe9c56286026bb5aae8b51d01797a7793.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	arp.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2324	b7c025073b59ee78cf04102574bb13afe9c56286026bb5aae8b51d01797a7793.exe
Token: SeDebugPrivilege	2084	arp.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2324 wrote to memory of 2084	2324	b7c025073b59ee78cf04102574bb13afe9c56286026bb5aae8b51d01797a7793.exe	30
PID 2324 wrote to memory of 2084	2324	b7c025073b59ee78cf04102574bb13afe9c56286026bb5aae8b51d01797a7793.exe	30
PID 2324 wrote to memory of 2084	2324	b7c025073b59ee78cf04102574bb13afe9c56286026bb5aae8b51d01797a7793.exe	30
PID 2324 wrote to memory of 2084	2324	b7c025073b59ee78cf04102574bb13afe9c56286026bb5aae8b51d01797a7793.exe	30

C:\Users\Admin\AppData\Local\Temp\b7c025073b59ee78cf04102574bb13afe9c56286026bb5aae8b51d01797a7793.exe
"C:\Users\Admin\AppData\Local\Temp\b7c025073b59ee78cf04102574bb13afe9c56286026bb5aae8b51d01797a7793.exe"
1⤵
- Loads dropped DLL
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2324
- C:\Windows\SysWOW64\arp.exe
  arp -a
  2⤵
  - Loads dropped DLL
  - Network Service Discovery
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:2084

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

Network Service Discovery

1

T1046

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

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

Filesize
71KB

MD5
4fcd7574537cebec8e75b4e646996643

SHA1
efa59bb9050fb656b90d5d40c942fb2a304f2a8b

SHA256
8ea3b17e4b783ffc0bc387b81b823bf87af0d57da74541d88ba85314bb232a5d

SHA512
7f1a7ef64d332a735db82506b47d84853af870785066d29ccaf4fdeab114079a9f0db400e01ba574776a0d652a248658fe1e8f9659cdced19ad6eea09644ea3e

Download Submit
memory/2084-7-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

Download
memory/2084-11-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

Download
memory/2324-3-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

Download
memory/2324-10-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

Download
memory/2324-8-0x00000000011C0000-0x00000000011F5000-memory.dmp

Filesize
212KB

Download

Analysis

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