floxif | 91bbe0850cd8ba0bbe38f3a756f8d16918e1e465af6d45428e55e9d4916087a4

General

Target

91bbe0850cd8ba0bbe38f3a756f8d16918e1e465af6d45428e55e9d4916087a4N.exe
Size

772KB
MD5

050100011329a398cc16587663211d00
SHA1

2e6484d1b3b20a95ce455cb23de3f3d7deda94d3
SHA256

91bbe0850cd8ba0bbe38f3a756f8d16918e1e465af6d45428e55e9d4916087a4
SHA512

eee670080d753f4539dedf8f35b75fa86b8f328a66bbe0f4f066b28cc88b2414d51b058f778ba5d8a91df1071963b20f689f0f0d26b236f02508c073cdb5bea9
SSDEEP

24576:eKWs7L6NuGpVUg71KEJ5wTqLdNXrEH78G:7F72Nlp6EQ6xdc

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/0x000c000000023b35-1.dat	floxif

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral2/files/0x000c000000023b35-1.dat	acprotect

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	91bbe0850cd8ba0bbe38f3a756f8d16918e1e465af6d45428e55e9d4916087a4N.exe

Executes dropped EXE 1 IoCs

pid	Process
264	78RePack.exe

Loads dropped DLL 4 IoCs

pid	Process
4632	91bbe0850cd8ba0bbe38f3a756f8d16918e1e465af6d45428e55e9d4916087a4N.exe
3648	91bbe0850cd8ba0bbe38f3a756f8d16918e1e465af6d45428e55e9d4916087a4N.exe
4632	91bbe0850cd8ba0bbe38f3a756f8d16918e1e465af6d45428e55e9d4916087a4N.exe
4632	91bbe0850cd8ba0bbe38f3a756f8d16918e1e465af6d45428e55e9d4916087a4N.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:	91bbe0850cd8ba0bbe38f3a756f8d16918e1e465af6d45428e55e9d4916087a4N.exe

UPX packed file 9 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000c000000023b35-1.dat	upx
behavioral2/memory/4632-3-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral2/memory/3648-15-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral2/memory/4632-68-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral2/memory/3648-69-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral2/memory/4632-76-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral2/memory/4632-83-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral2/memory/4632-89-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral2/memory/4632-101-0x0000000010000000-0x0000000010030000-memory.dmp	upx

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	\??\c:\program files\common files\system\symsrv.dll.000	91bbe0850cd8ba0bbe38f3a756f8d16918e1e465af6d45428e55e9d4916087a4N.exe
File created	C:\Program Files\Common Files\System\symsrv.dll	91bbe0850cd8ba0bbe38f3a756f8d16918e1e465af6d45428e55e9d4916087a4N.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 3 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	91bbe0850cd8ba0bbe38f3a756f8d16918e1e465af6d45428e55e9d4916087a4N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	91bbe0850cd8ba0bbe38f3a756f8d16918e1e465af6d45428e55e9d4916087a4N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	78RePack.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
4632	91bbe0850cd8ba0bbe38f3a756f8d16918e1e465af6d45428e55e9d4916087a4N.exe
4632	91bbe0850cd8ba0bbe38f3a756f8d16918e1e465af6d45428e55e9d4916087a4N.exe
3648	91bbe0850cd8ba0bbe38f3a756f8d16918e1e465af6d45428e55e9d4916087a4N.exe
3648	91bbe0850cd8ba0bbe38f3a756f8d16918e1e465af6d45428e55e9d4916087a4N.exe
4632	91bbe0850cd8ba0bbe38f3a756f8d16918e1e465af6d45428e55e9d4916087a4N.exe
4632	91bbe0850cd8ba0bbe38f3a756f8d16918e1e465af6d45428e55e9d4916087a4N.exe
4632	91bbe0850cd8ba0bbe38f3a756f8d16918e1e465af6d45428e55e9d4916087a4N.exe
4632	91bbe0850cd8ba0bbe38f3a756f8d16918e1e465af6d45428e55e9d4916087a4N.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	4632	91bbe0850cd8ba0bbe38f3a756f8d16918e1e465af6d45428e55e9d4916087a4N.exe
Token: SeDebugPrivilege	3648	91bbe0850cd8ba0bbe38f3a756f8d16918e1e465af6d45428e55e9d4916087a4N.exe
Token: 33	264	78RePack.exe
Token: SeIncBasePriorityPrivilege	264	78RePack.exe
Token: 33	264	78RePack.exe
Token: SeIncBasePriorityPrivilege	264	78RePack.exe
Token: 33	264	78RePack.exe
Token: SeIncBasePriorityPrivilege	264	78RePack.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4632 wrote to memory of 3648	4632	91bbe0850cd8ba0bbe38f3a756f8d16918e1e465af6d45428e55e9d4916087a4N.exe	83
PID 4632 wrote to memory of 3648	4632	91bbe0850cd8ba0bbe38f3a756f8d16918e1e465af6d45428e55e9d4916087a4N.exe	83
PID 4632 wrote to memory of 3648	4632	91bbe0850cd8ba0bbe38f3a756f8d16918e1e465af6d45428e55e9d4916087a4N.exe	83
PID 3648 wrote to memory of 264	3648	91bbe0850cd8ba0bbe38f3a756f8d16918e1e465af6d45428e55e9d4916087a4N.exe	84
PID 3648 wrote to memory of 264	3648	91bbe0850cd8ba0bbe38f3a756f8d16918e1e465af6d45428e55e9d4916087a4N.exe	84
PID 3648 wrote to memory of 264	3648	91bbe0850cd8ba0bbe38f3a756f8d16918e1e465af6d45428e55e9d4916087a4N.exe	84

C:\Users\Admin\AppData\Local\Temp\91bbe0850cd8ba0bbe38f3a756f8d16918e1e465af6d45428e55e9d4916087a4N.exe
"C:\Users\Admin\AppData\Local\Temp\91bbe0850cd8ba0bbe38f3a756f8d16918e1e465af6d45428e55e9d4916087a4N.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:4632
- C:\Users\Admin\AppData\Local\Temp\91bbe0850cd8ba0bbe38f3a756f8d16918e1e465af6d45428e55e9d4916087a4N.exe
  "C:\Users\Admin\AppData\Local\Temp\91bbe0850cd8ba0bbe38f3a756f8d16918e1e465af6d45428e55e9d4916087a4N.exe" -sfxwaitall:0 "78RePack.exe"
  2⤵
  - Checks computer location settings
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3648
- - C:\Users\Admin\AppData\Local\Temp\7ZipSfx.000\78RePack.exe
    "C:\Users\Admin\AppData\Local\Temp\7ZipSfx.000\78RePack.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    PID:264

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

3

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

Filesize
67KB

MD5
7574cf2c64f35161ab1292e2f532aabf

SHA1
14ba3fa927a06224dfe587014299e834def4644f

SHA256
de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085

SHA512
4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

Download Submit
C:\Program Files\Common Files\System\symsrv.dll.000

Filesize
175B

MD5
1130c911bf5db4b8f7cf9b6f4b457623

SHA1
48e734c4bc1a8b5399bff4954e54b268bde9d54c

SHA256
eba08cc8182f379392a97f542b350ea0dbbe5e4009472f35af20e3d857eafdf1

SHA512
94e2511ef2c53494c2aff0960266491ffc0e54e75185427d1ccedae27c286992c754ca94cbb0c9ea36e3f04cd4eb7f032c551cf2d4b309f292906303f1a75fa0

Download Submit
C:\Users\Admin\AppData\Local\Temp\7ZipSfx.000\78RePack.exe

Filesize
570KB

MD5
fac525b2b1acc757f0eb9bf994f4f331

SHA1
4435e0192f26eb23d9af0e1765e83946771d3673

SHA256
f93f45c6b40e3c09194df572a334b8da3556f4e7cf022508fee049f5bcf5f287

SHA512
cccb17e71be31d89548d531b658557ace5253126d119d1906769028d08b25312c0d041d4f8828184d46c15082013310e3094717700c6d14ef3d8e2c09d8b8cff

Download Submit
C:\Users\Admin\AppData\Local\Temp\7ZipSfx.000\78RePack.exe.tmp

Filesize
646KB

MD5
c492d92ff82b193d388a50e427ec613b

SHA1
4b1c76c9c4a9e5fcf687ecfb930f21f435a95eb9

SHA256
b84561a1ea273ad5c789207975c270a1a3407ce2a0fe853d355116e748d0b0ca

SHA512
8e984566713ec47166ecd60821bc954df2cce9abe8825bc7f41ef0207e0d2d3d6b6a78e9d6f8b2b5e45bfb38c86a90a95c1d928ad9e950c8518381b6eec3bd78

Download Submit
memory/264-64-0x0000000000400000-0x0000000000494000-memory.dmp

Filesize
592KB

Download
memory/264-74-0x0000000000400000-0x0000000000494000-memory.dmp

Filesize
592KB

Download
memory/264-36-0x0000000000400000-0x0000000000494000-memory.dmp

Filesize
592KB

Download
memory/264-56-0x0000000000400000-0x0000000000494000-memory.dmp

Filesize
592KB

Download
memory/264-55-0x0000000000400000-0x0000000000494000-memory.dmp

Filesize
592KB

Download
memory/264-53-0x0000000000400000-0x0000000000494000-memory.dmp

Filesize
592KB

Download
memory/264-51-0x0000000000400000-0x0000000000494000-memory.dmp

Filesize
592KB

Download
memory/264-57-0x0000000000400000-0x0000000000494000-memory.dmp

Filesize
592KB

Download
memory/264-28-0x0000000000400000-0x0000000000494000-memory.dmp

Filesize
592KB

Download
memory/264-78-0x0000000000400000-0x0000000000494000-memory.dmp

Filesize
592KB

Download
memory/264-75-0x0000000000400000-0x0000000000494000-memory.dmp

Filesize
592KB

Download
memory/264-21-0x0000000000400000-0x0000000000494000-memory.dmp

Filesize
592KB

Download
memory/264-73-0x0000000000400000-0x0000000000494000-memory.dmp

Filesize
592KB

Download
memory/264-70-0x0000000000400000-0x0000000000494000-memory.dmp

Filesize
592KB

Download
memory/3648-69-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/3648-15-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/4632-68-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/4632-66-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/4632-5-0x000000000040D000-0x0000000000410000-memory.dmp

Filesize
12KB

Download
memory/4632-76-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/4632-83-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/4632-3-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/4632-89-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/4632-101-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads