floxif | e15a34af8596dbb3b4f88968bbf6e892a1f193abf5906fb26c0e7c2d9ccdf9a1

General

Target

e15a34af8596dbb3b4f88968bbf6e892a1f193abf5906fb26c0e7c2d9ccdf9a1.exe
Size

2.7MB
MD5

0bacd8621b781a35693e3f23ef8cb423
SHA1

94d6637ca3e75f659e5a74e9bf1f89b354119c30
SHA256

e15a34af8596dbb3b4f88968bbf6e892a1f193abf5906fb26c0e7c2d9ccdf9a1
SHA512

044888be9caa25dfa923f1fa4d66985b9175a83512779b4ef46fda33663f6dd5d695f8091085a0a025ad88a3993e028409b24120776f9e2c90c57e38529e73f1
SSDEEP

49152:2Pf6VdMQTNRbc3shkNw//7vgseqziRS1UsrzoeNFZe05c71y9Bx4M3W/KMZKWKKT:2q1R43ssw//7vgVqziRS1Usrzppv5y1N

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
behavioral2/files/0x000c000000023cd3-1.dat	floxif

Downloads MZ/PE file 1 IoCs

flow	pid	Process
20	4236	Process not Found

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral2/files/0x000c000000023cd3-1.dat	acprotect

Loads dropped DLL 1 IoCs

pid	Process
3860	e15a34af8596dbb3b4f88968bbf6e892a1f193abf5906fb26c0e7c2d9ccdf9a1.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000c000000023cd3-1.dat	upx
behavioral2/memory/3860-4-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral2/memory/3860-9-0x0000000010000000-0x0000000010030000-memory.dmp	upx

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\System\symsrv.dll	e15a34af8596dbb3b4f88968bbf6e892a1f193abf5906fb26c0e7c2d9ccdf9a1.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1976	3860	WerFault.exe	84

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	MicrosoftEdgeUpdate.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	e15a34af8596dbb3b4f88968bbf6e892a1f193abf5906fb26c0e7c2d9ccdf9a1.exe

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
2228	MicrosoftEdgeUpdate.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3860	e15a34af8596dbb3b4f88968bbf6e892a1f193abf5906fb26c0e7c2d9ccdf9a1.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3860	e15a34af8596dbb3b4f88968bbf6e892a1f193abf5906fb26c0e7c2d9ccdf9a1.exe

C:\Users\Admin\AppData\Local\Temp\e15a34af8596dbb3b4f88968bbf6e892a1f193abf5906fb26c0e7c2d9ccdf9a1.exe
"C:\Users\Admin\AppData\Local\Temp\e15a34af8596dbb3b4f88968bbf6e892a1f193abf5906fb26c0e7c2d9ccdf9a1.exe"
1⤵
- Loads dropped DLL
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:3860
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3860 -s 812
  2⤵
  - Program crash
  PID:1976

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 3860 -ip 3860
1⤵
PID:3408

C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe
"C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe" /ping 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-PGFwcCBhcHBpZD0iezhBNjlEMzQ1LUQ1NjQtNDYzYy1BRkYxLUE2OUQ5RTUzMEY5Nn0iIHZlcnNpb249IjEyMy4wLjYzMTIuMTIzIiBuZXh0dmVyc2lvbj0iIiBsYW5nPSJlbiIgYnJhbmQ9IkdHTFMiIGNsaWVudD0iIiBpbnN0YWxsYWdlPSIxIiBpbnN0YWxsZGF0ZXRpbWU9IjE3Mzg5NDU1NzgiIG9vYmVfaW5zdGFsbF90aW1lPSIxMzM4MzQxODAxNjUyMzAwMDAiPjxldmVudCBldmVudHR5cGU9IjMxIiBldmVudHJlc3VsdD0iMSIgZXJyb3Jjb2RlPSIwIiBleHRyYWNvZGUxPSIyMTc5ODYyIiBzeXN0ZW1fdXB0aW1lX3RpY2tzPSI1MDk0OTU5MDgwIi8-PC9hcHA-PC9yZXF1ZXN0Pg
1⤵
- System Location Discovery: System Language Discovery
- System Network Configuration Discovery: Internet Connection Discovery
PID:2228

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

System Network Configuration Discovery

1

T1016

Internet Connection Discovery

1

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
67KB

MD5
7574cf2c64f35161ab1292e2f532aabf

SHA1
14ba3fa927a06224dfe587014299e834def4644f

SHA256
de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085

SHA512
4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

Download Submit
memory/3860-4-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/3860-6-0x00000000002A1000-0x00000000002A2000-memory.dmp

Filesize
4KB

Download
memory/3860-9-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/3860-7-0x00000000002A0000-0x0000000000548000-memory.dmp

Filesize
2.7MB

Download

Analysis

Sharing