floxif | 1e9e1f1b72dd42d723c8d9ba5fa1fb70c3a1845fa53595fafdaaa65b698cea96

General

Target

1e9e1f1b72dd42d723c8d9ba5fa1fb70c3a1845fa53595fafdaaa65b698cea96N.exe
Size

114KB
MD5

d99a9a62503c5a9688caa85bbc4435a0
SHA1

606c43e319034d7c2a2fc778a50fe35e3ef4d99d
SHA256

1e9e1f1b72dd42d723c8d9ba5fa1fb70c3a1845fa53595fafdaaa65b698cea96
SHA512

7d20e3734e0720054b5e71e615a4496b355fee30f5568f256eebeb59b6e41ad257e8ad1fd2dd9518302d5463e149fe21fcf981e742135e97d45dcee909e2162f
SSDEEP

3072:aOXHI80Dout/R8V3D2lQBV+UdE+rECWp7hKUPw:r4toS/IHBV+UdvrEFp7hKkw

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/0x000b0000000122cf-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/0x000b0000000122cf-2.dat	acprotect

Loads dropped DLL 2 IoCs

pid	Process
2324	1e9e1f1b72dd42d723c8d9ba5fa1fb70c3a1845fa53595fafdaaa65b698cea96N.exe
2808	cmd.exe

UPX packed file 7 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2324-0-0x0000000000400000-0x0000000000418000-memory.dmp	upx
behavioral1/files/0x000b0000000122cf-2.dat	upx
behavioral1/memory/2324-4-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral1/memory/2808-22-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral1/memory/2808-25-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral1/memory/2324-29-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral1/memory/2324-28-0x0000000000400000-0x0000000000418000-memory.dmp	upx

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\System\symsrv.dll	1e9e1f1b72dd42d723c8d9ba5fa1fb70c3a1845fa53595fafdaaa65b698cea96N.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 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	1e9e1f1b72dd42d723c8d9ba5fa1fb70c3a1845fa53595fafdaaa65b698cea96N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2324	1e9e1f1b72dd42d723c8d9ba5fa1fb70c3a1845fa53595fafdaaa65b698cea96N.exe
Token: SeDebugPrivilege	2808	cmd.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2324 wrote to memory of 2808	2324	1e9e1f1b72dd42d723c8d9ba5fa1fb70c3a1845fa53595fafdaaa65b698cea96N.exe	30
PID 2324 wrote to memory of 2808	2324	1e9e1f1b72dd42d723c8d9ba5fa1fb70c3a1845fa53595fafdaaa65b698cea96N.exe	30
PID 2324 wrote to memory of 2808	2324	1e9e1f1b72dd42d723c8d9ba5fa1fb70c3a1845fa53595fafdaaa65b698cea96N.exe	30
PID 2324 wrote to memory of 2808	2324	1e9e1f1b72dd42d723c8d9ba5fa1fb70c3a1845fa53595fafdaaa65b698cea96N.exe	30

C:\Users\Admin\AppData\Local\Temp\1e9e1f1b72dd42d723c8d9ba5fa1fb70c3a1845fa53595fafdaaa65b698cea96N.exe
"C:\Users\Admin\AppData\Local\Temp\1e9e1f1b72dd42d723c8d9ba5fa1fb70c3a1845fa53595fafdaaa65b698cea96N.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\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\2C6D.tmp\½Ï¾µÀÌ.cmd" "
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:2808

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

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\2C6D.tmp\½Ï¾µÀÌ.cmd

Filesize
192B

MD5
8957624b7388cdaeac02c93890946dd6

SHA1
cfa90330f48c7b09c5c688ef686bf85be8003919

SHA256
c3d9b52369385e57562db2fe43c2443fd5accd41f1e50bf3f33f45dc51ef6daa

SHA512
f9b17ef67be185a03a06d0406cc6afd50f788cb24ef235e99fa1cdeaf1471a1e97bdde7a6cc0e240c47ea42190a8a698edfb9d3ebf28bea6db73b75e2665d5db

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

Filesize
67KB

MD5
7574cf2c64f35161ab1292e2f532aabf

SHA1
14ba3fa927a06224dfe587014299e834def4644f

SHA256
de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085

SHA512
4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

Download Submit
memory/2324-0-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download
memory/2324-4-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/2324-29-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/2324-28-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download
memory/2808-22-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/2808-25-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download

Analysis

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