floxif | 0d2bb04de18496f4a31668160d90a97ed8b7222ab680a675929c42fcd14e6c3e

Analysis

max time kernel
93s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
02/09/2024, 16:53

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General

Target
2024090248fd4e2b7eaf5a0efc47cc7dd1dfad61floxifmafia.exe
Size 2.5MB
Sample240902-vebzwsvfla
SHA256 0d2bb04de18496f4a31668160d90a97ed8b7222ab680a675929c42fcd14e6c3e
MD5 48fd4e2b7eaf5a0efc47cc7dd1dfad61
SHA1 38c47ae34b007565a3fa8e8b391ffa66b3fc736d
SHA512 bd08c1ba055a958f5df7d2151e44c28508cfc606deef598e4f8fad00c6a5b338ed4776697fbac58e87bc01e1b3fe451eccf5d2e3193b6a850b844bb4a8271acc
SSDEEP 49152:tJIIKrofs2hPd2l177BTK2VbDsar1YDjR:tCqfs2hPIl1/6
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

floxif backdoor discovery 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
behavioral2/files/0x0009000000023342-1.dat	floxif

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral2/files/0x0009000000023342-1.dat	acprotect

Loads dropped DLL 1 IoCs

pid	Process
232	2024090248fd4e2b7eaf5a0efc47cc7dd1dfad61floxifmafia.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/memory/232-4-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral2/files/0x0009000000023342-1.dat	upx
behavioral2/memory/232-13-0x0000000010000000-0x0000000010030000-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:	2024090248fd4e2b7eaf5a0efc47cc7dd1dfad61floxifmafia.exe

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\System\symsrv.dll	2024090248fd4e2b7eaf5a0efc47cc7dd1dfad61floxifmafia.exe

Program crash 3 IoCs

pid	pid_target	Process	procid_target
4772	232	WerFault.exe	82
4228	232	WerFault.exe	82
2572	232	WerFault.exe	82

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	2024090248fd4e2b7eaf5a0efc47cc7dd1dfad61floxifmafia.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
232	2024090248fd4e2b7eaf5a0efc47cc7dd1dfad61floxifmafia.exe
232	2024090248fd4e2b7eaf5a0efc47cc7dd1dfad61floxifmafia.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	232	2024090248fd4e2b7eaf5a0efc47cc7dd1dfad61floxifmafia.exe

C:\Users\Admin\AppData\Local\Temp\2024090248fd4e2b7eaf5a0efc47cc7dd1dfad61floxifmafia.exe
"C:\Users\Admin\AppData\Local\Temp\2024090248fd4e2b7eaf5a0efc47cc7dd1dfad61floxifmafia.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:232
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 232 -s 836
  2⤵
  - Program crash
  PID:4772
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 232 -s 912
  2⤵
  - Program crash
  PID:4228
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 232 -s 948
  2⤵
  - Program crash
  PID:2572

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 464 -p 232 -ip 232
1⤵
PID:4080

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 232 -ip 232
1⤵
PID:2224

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 476 -p 232 -ip 232
1⤵
PID:3324

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

symsrv.dll

Path C:\Program Files\Common Files\System\symsrv.dll
Size 67KB
SHA256 de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085
MD5 7574cf2c64f35161ab1292e2f532aabf
SHA1 14ba3fa927a06224dfe587014299e834def4644f
SHA512 4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab
SSDEEP 1536:YjV8y93KQpFQmPLRk7G50zy/riF12jvRyo0hQk7ZL:c8y93KQjy7G55riF1cMo03V
MD5 SHA1 SHA512 SSDEEP

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memory/232-4-0x0000000010000000-0x0000000010030000-memory.dmp

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memory/232-6-0x0000000000C21000-0x0000000000C22000-memory.dmp

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memory/232-13-0x0000000010000000-0x0000000010030000-memory.dmp

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memory/232-11-0x0000000000C20000-0x0000000000E8A000-memory.dmp

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