floxif | 99311778b99d56777ce6f121953b95ee0d4d2a7ac960f1b4740f4ac6417ef7e4

General

Target

99311778b99d56777ce6f121953b95ee0d4d2a7ac960f1b4740f4ac6417ef7e4.exe
Size

665KB
MD5

369370d67ab3a5342dabacea246ea3d9
SHA1

4e82f5f73a18bd00d16d261c40050299c87f2af5
SHA256

99311778b99d56777ce6f121953b95ee0d4d2a7ac960f1b4740f4ac6417ef7e4
SHA512

ef242599cff955b1cf0ca7882f9c002748dd4d858ad5e6d215056dd65c42a8dd9066b6f40eeadc72799308ede33974f4e81079fc908bf44266b6a6961dffffbe
SSDEEP

12288:XubXcPafJcLlnvrQwnVWqqPIBONhxsU/EbBjvrEH7i:XurI9Or/xsU/EhrEH7i

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/0x000c000000023d09-1.dat	floxif

Downloads MZ/PE file 1 IoCs

flow	pid	Process
40	1428	Process not Found

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral2/files/0x000c000000023d09-1.dat	acprotect

Loads dropped DLL 4 IoCs

pid	Process
2608	99311778b99d56777ce6f121953b95ee0d4d2a7ac960f1b4740f4ac6417ef7e4.exe
2608	99311778b99d56777ce6f121953b95ee0d4d2a7ac960f1b4740f4ac6417ef7e4.exe
2164	Process not Found
4652	MicrosoftEdgeUpdate.exe

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:	99311778b99d56777ce6f121953b95ee0d4d2a7ac960f1b4740f4ac6417ef7e4.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000c000000023d09-1.dat	upx
behavioral2/memory/2608-3-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral2/memory/2608-68-0x0000000010000000-0x0000000010030000-memory.dmp	upx

Drops file in Program Files directory 5 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\Microsoft\EdgeUpdate\1.3.195.43\msedgeupdate.dll.tmp	99311778b99d56777ce6f121953b95ee0d4d2a7ac960f1b4740f4ac6417ef7e4.exe
File opened for modification	C:\Program Files (x86)\Microsoft\EdgeUpdate\1.3.195.43\msedgeupdate.dll.dat	99311778b99d56777ce6f121953b95ee0d4d2a7ac960f1b4740f4ac6417ef7e4.exe
File created	\??\c:\program files\common files\system\symsrv.dll.000	99311778b99d56777ce6f121953b95ee0d4d2a7ac960f1b4740f4ac6417ef7e4.exe
File created	C:\Program Files\Common Files\System\symsrv.dll	99311778b99d56777ce6f121953b95ee0d4d2a7ac960f1b4740f4ac6417ef7e4.exe
File opened for modification	C:\Program Files (x86)\Microsoft\EdgeUpdate\1.3.195.43\msedgeupdate.dll	99311778b99d56777ce6f121953b95ee0d4d2a7ac960f1b4740f4ac6417ef7e4.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
2760	2164	WerFault.exe	91
2284	4652	WerFault.exe	95

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	99311778b99d56777ce6f121953b95ee0d4d2a7ac960f1b4740f4ac6417ef7e4.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	MicrosoftEdgeUpdate.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
4652	MicrosoftEdgeUpdate.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2608	99311778b99d56777ce6f121953b95ee0d4d2a7ac960f1b4740f4ac6417ef7e4.exe
2608	99311778b99d56777ce6f121953b95ee0d4d2a7ac960f1b4740f4ac6417ef7e4.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2608	99311778b99d56777ce6f121953b95ee0d4d2a7ac960f1b4740f4ac6417ef7e4.exe

C:\Users\Admin\AppData\Local\Temp\99311778b99d56777ce6f121953b95ee0d4d2a7ac960f1b4740f4ac6417ef7e4.exe
"C:\Users\Admin\AppData\Local\Temp\99311778b99d56777ce6f121953b95ee0d4d2a7ac960f1b4740f4ac6417ef7e4.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:2608

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 360 -p 2164 -ip 2164
1⤵
PID:2372

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2164 -s 520
1⤵
- Program crash
PID:2760

C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe
"C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe" /ping 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-PGFwcCBhcHBpZD0iezhBNjlEMzQ1LUQ1NjQtNDYzYy1BRkYxLUE2OUQ5RTUzMEY5Nn0iIHZlcnNpb249IjEyMy4wLjYzMTIuMTIzIiBuZXh0dmVyc2lvbj0iIiBsYW5nPSJlbiIgYnJhbmQ9IkdHTFMiIGNsaWVudD0iIiBpbnN0YWxsYWdlPSIxIiBpbnN0YWxsZGF0ZXRpbWU9IjE3Mzg5NDU4NjAiIG9vYmVfaW5zdGFsbF90aW1lPSIxMzM4MzQxODIxNjMwOTAwMDAiPjxldmVudCBldmVudHR5cGU9IjMxIiBldmVudHJlc3VsdD0iMSIgZXJyb3Jjb2RlPSIwIiBleHRyYWNvZGUxPSIyMTc5ODYyIiBzeXN0ZW1fdXB0aW1lX3RpY2tzPSI1MjgzMjg3NzEzIi8-PC9hcHA-PC9yZXF1ZXN0Pg
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- System Network Configuration Discovery: Internet Connection Discovery
PID:4652
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4652 -s 520
  2⤵
  - Program crash
  PID:2284

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 4652 -ip 4652
1⤵
PID:1620

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

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 (x86)\Microsoft\EdgeUpdate\1.3.195.43\msedgeupdate.dll.tmp

Filesize
2.2MB

MD5
0b30c73792c65abad9e00e9295ff7a98

SHA1
549207513dc2967ec1a9f4dbd9d0e4cac16eed93

SHA256
6515fb1139b72d073163f23a55b3d8faf63b445bdd23321a9f911bd99c3694a8

SHA512
6a5627a5c8179a519df3dbacb24c17498e6c5d3c4a017f7a37dba761356e4c2c3cec44b7e66dcdd6deaa7b9495c663851279c5a9efd2dbbe4a7317af36f857da

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

Filesize
67KB

MD5
7574cf2c64f35161ab1292e2f532aabf

SHA1
14ba3fa927a06224dfe587014299e834def4644f

SHA256
de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085

SHA512
4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

Download Submit
C:\Users\Admin\AppData\Local\Temp\log.txt

Filesize
6KB

MD5
eda7bc90f2cef20630404da62003f2c7

SHA1
1785a1d7721350fedda7017eb9a47c53937fdb2b

SHA256
5916b7a29df560e10f2ec62a8a770157593e414d399bb51f4df21b07756faaa0

SHA512
71cb5dd967470ab4ead14620bb87181fb4b076ce0f257f5e3eb63d6603239091c41c9d1944b7254fa55f053a4ba1d5422981764cbc38be313d5fce339c0fd367

Download Submit
memory/2608-3-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/2608-68-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/2608-66-0x0000000000230000-0x00000000002CA000-memory.dmp

Filesize
616KB

Download

Analysis

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