floxif | e640e74d70036e8d76c06825cd97ef345822194abaa14c7b72a88c13312ac732

General

Target

1896e6bf0579c2e5f8ae55b8e24d3c10N.exe
Size

6.1MB
MD5

1896e6bf0579c2e5f8ae55b8e24d3c10
SHA1

a8e88616f310fb578cdcc2b8bdb4d597f08bcdad
SHA256

e640e74d70036e8d76c06825cd97ef345822194abaa14c7b72a88c13312ac732
SHA512

12f37704c50918933d612ba9c4dcb42c60b7f75461ef27cdf9a053e5c05439ce1328623376c27c456321b275c446b079db46e6b49514f445fd88b04958e5b493
SSDEEP

49152:3haPxbaewRMF46KEGzUUwu0KM+v8YS+DG4EqJtCAza9j+D5NUOWWuvks97zPokaL:3ha5batRvXBwu0d67CAza9s5YH9S

Score

10^/10

floxif backdoor 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
behavioral1/files/0x00080000000120fb-7.dat	floxif

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral1/files/0x00080000000120fb-7.dat	acprotect

Loads dropped DLL 1 IoCs

pid	Process
2080	1896e6bf0579c2e5f8ae55b8e24d3c10N.exe

UPX packed file 8 IoCs

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

upx

resource	yara_rule
behavioral1/files/0x00080000000120fb-7.dat	upx
behavioral1/memory/2080-3-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral1/memory/2080-12-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral1/memory/2080-16-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral1/memory/2080-20-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral1/memory/2080-24-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral1/memory/2080-28-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral1/memory/2080-32-0x0000000010000000-0x0000000010030000-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:	1896e6bf0579c2e5f8ae55b8e24d3c10N.exe

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\System\symsrv.dll	1896e6bf0579c2e5f8ae55b8e24d3c10N.exe
File created	\??\c:\program files\common files\system\symsrv.dll.000	1896e6bf0579c2e5f8ae55b8e24d3c10N.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2080	1896e6bf0579c2e5f8ae55b8e24d3c10N.exe
2080	1896e6bf0579c2e5f8ae55b8e24d3c10N.exe
2080	1896e6bf0579c2e5f8ae55b8e24d3c10N.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2080	1896e6bf0579c2e5f8ae55b8e24d3c10N.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2080 wrote to memory of 1792	2080	1896e6bf0579c2e5f8ae55b8e24d3c10N.exe	31
PID 2080 wrote to memory of 1792	2080	1896e6bf0579c2e5f8ae55b8e24d3c10N.exe	31
PID 2080 wrote to memory of 1792	2080	1896e6bf0579c2e5f8ae55b8e24d3c10N.exe	31
PID 2080 wrote to memory of 1792	2080	1896e6bf0579c2e5f8ae55b8e24d3c10N.exe	31

C:\Users\Admin\AppData\Local\Temp\1896e6bf0579c2e5f8ae55b8e24d3c10N.exe
"C:\Users\Admin\AppData\Local\Temp\1896e6bf0579c2e5f8ae55b8e24d3c10N.exe"
1⤵
- Loads dropped DLL
- Enumerates connected drives
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2080
- C:\Windows\splwow64.exe
  C:\Windows\splwow64.exe 12288
  2⤵
  PID:1792

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

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
memory/2080-3-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/2080-12-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/2080-11-0x0000000000400000-0x0000000000AF0000-memory.dmp

Filesize
6.9MB

Download
memory/2080-16-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/2080-20-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/2080-24-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/2080-28-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/2080-32-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download

Analysis

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