floxif | 767b08d7d498ef765835a26fd6d7b7a94fdb66206727a1307d4407bded87a741

General

Target
bbe839b44f8af8300ee86da3cb123c00N.exe
Size 3.6MB
Sample240909-qjrtpascmc
SHA256 767b08d7d498ef765835a26fd6d7b7a94fdb66206727a1307d4407bded87a741
MD5 bbe839b44f8af8300ee86da3cb123c00
SHA1 6df4b5ca73c2db4caf4db0542b62a56ea68bea9c
SHA512 782c34a7c26ef6fc1fa8a2e474b465e2938f0200d3d9af6d8aa895dc4d952c7a4e8595cad107ae74910999966d8cfcbfc85ff31ee626dde724703d741fb9a8a4
SSDEEP 98304:Z6TJTfvpoNTDxxRb9pJuC9KiBD7ioML9y92mRnFDZtW:4tpoJdtpIa1ByoML9yzXtW
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/0x0008000000023439-2.dat	floxif

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral2/files/0x0008000000023439-2.dat	acprotect

Loads dropped DLL 1 IoCs

pid	Process
392	bbe839b44f8af8300ee86da3cb123c00N.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x0008000000023439-2.dat	upx
behavioral2/memory/392-5-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral2/memory/392-22-0x0000000010000000-0x0000000010030000-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:	bbe839b44f8af8300ee86da3cb123c00N.exe

AutoIT Executable 2 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral2/memory/392-16-0x0000000000660000-0x0000000000BB6000-memory.dmp	autoit_exe
behavioral2/memory/392-21-0x0000000000660000-0x0000000000BB6000-memory.dmp	autoit_exe

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\System\symsrv.dll	bbe839b44f8af8300ee86da3cb123c00N.exe
File created	\??\c:\program files\common files\system\symsrv.dll.000	bbe839b44f8af8300ee86da3cb123c00N.exe

System Location Discovery: System Language Discovery 1 TTPs 5 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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	bbe839b44f8af8300ee86da3cb123c00N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\Nls\Language	bbe839b44f8af8300ee86da3cb123c00N.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\Nls\Language\InstallLanguage	bbe839b44f8af8300ee86da3cb123c00N.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
392	bbe839b44f8af8300ee86da3cb123c00N.exe
392	bbe839b44f8af8300ee86da3cb123c00N.exe
392	bbe839b44f8af8300ee86da3cb123c00N.exe
392	bbe839b44f8af8300ee86da3cb123c00N.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	392	bbe839b44f8af8300ee86da3cb123c00N.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 392 wrote to memory of 2700	392	bbe839b44f8af8300ee86da3cb123c00N.exe	86
PID 392 wrote to memory of 2700	392	bbe839b44f8af8300ee86da3cb123c00N.exe	86
PID 392 wrote to memory of 2700	392	bbe839b44f8af8300ee86da3cb123c00N.exe	86
PID 392 wrote to memory of 5076	392	bbe839b44f8af8300ee86da3cb123c00N.exe	94
PID 392 wrote to memory of 5076	392	bbe839b44f8af8300ee86da3cb123c00N.exe	94
PID 392 wrote to memory of 5076	392	bbe839b44f8af8300ee86da3cb123c00N.exe	94

C:\Users\Admin\AppData\Local\Temp\bbe839b44f8af8300ee86da3cb123c00N.exe
"C:\Users\Admin\AppData\Local\Temp\bbe839b44f8af8300ee86da3cb123c00N.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
- Suspicious use of WriteProcessMemory
PID:392
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ver
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2700
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c rd /s /q "C:\~WanDrv6.Temp.UdqQu"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:5076

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

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

Submit Download

memory/392-0-0x0000000000660000-0x0000000000BB6000-memory.dmp

Download

memory/392-5-0x0000000010000000-0x0000000010030000-memory.dmp

Download

memory/392-7-0x0000000000B8C000-0x0000000000B8D000-memory.dmp

Download

memory/392-16-0x0000000000660000-0x0000000000BB6000-memory.dmp

Download

memory/392-22-0x0000000010000000-0x0000000010030000-memory.dmp

Download

memory/392-21-0x0000000000660000-0x0000000000BB6000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads