floxif | 733858d5069ac7cc7f457c9987791d5b1825b85f5303e219b7364fe7547712ba

General

Target

733858d5069ac7cc7f457c9987791d5b1825b85f5303e219b7364fe7547712ba.exe
Size

294KB
MD5

bc7fbed19f45347b8467c7253e411158
SHA1

7739ef2b5f8dc5960bb10d8a5e1b2e8dd602c567
SHA256

733858d5069ac7cc7f457c9987791d5b1825b85f5303e219b7364fe7547712ba
SHA512

01ef175bdc01ba99c8b88f166d1721a790fb1043b2580f61b5c06c3127ea5d508fb126e8749342c87d178e2c2c49b06c2c8ed25eab622363566bf12af0515156
SSDEEP

6144:ieSIs0j1vOFnYi7V8QUTmu/cnlLQBV+UdvrEFp7hK2Gpm:mRa1v+nY2VraaKBjvrEH7DG0

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
behavioral1/files/0x000c00000001202c-2.dat	floxif

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral1/files/0x000c00000001202c-2.dat	acprotect

Loads dropped DLL 4 IoCs

pid	Process
2556	733858d5069ac7cc7f457c9987791d5b1825b85f5303e219b7364fe7547712ba.exe
2556	733858d5069ac7cc7f457c9987791d5b1825b85f5303e219b7364fe7547712ba.exe
2556	733858d5069ac7cc7f457c9987791d5b1825b85f5303e219b7364fe7547712ba.exe
2556	733858d5069ac7cc7f457c9987791d5b1825b85f5303e219b7364fe7547712ba.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:	733858d5069ac7cc7f457c9987791d5b1825b85f5303e219b7364fe7547712ba.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2556-4-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral1/files/0x000c00000001202c-2.dat	upx
behavioral1/memory/2556-48-0x0000000010000000-0x0000000010030000-memory.dmp	upx

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\System\symsrv.dll	733858d5069ac7cc7f457c9987791d5b1825b85f5303e219b7364fe7547712ba.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 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	733858d5069ac7cc7f457c9987791d5b1825b85f5303e219b7364fe7547712ba.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2556	733858d5069ac7cc7f457c9987791d5b1825b85f5303e219b7364fe7547712ba.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2556	733858d5069ac7cc7f457c9987791d5b1825b85f5303e219b7364fe7547712ba.exe

C:\Users\Admin\AppData\Local\Temp\733858d5069ac7cc7f457c9987791d5b1825b85f5303e219b7364fe7547712ba.exe
"C:\Users\Admin\AppData\Local\Temp\733858d5069ac7cc7f457c9987791d5b1825b85f5303e219b7364fe7547712ba.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:2556

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

2

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

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

Filesize
67KB

MD5
7574cf2c64f35161ab1292e2f532aabf

SHA1
14ba3fa927a06224dfe587014299e834def4644f

SHA256
de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085

SHA512
4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

Download Submit
\Users\Admin\AppData\Local\Temp\nsjB952.tmp\System.dll

Filesize
11KB

MD5
c17103ae9072a06da581dec998343fc1

SHA1
b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

SHA256
dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

SHA512
d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

Download Submit
\Users\Admin\AppData\Local\Temp\nsjB952.tmp\UAC.dll

Filesize
13KB

MD5
bcec2a6095d38abc192a68d094c302d0

SHA1
9e88c5b957b45524690513b75d81dee259d5d599

SHA256
446000200eff4f9c20761ce1680902daba190c81a57154f4917b1741d7800e3c

SHA512
b48e85a17904a104eef573358763a0b1215eec96f72f83ff544d2dab22737bc42411ca505adf3f7e95c6f7e7997ad3e408f258093727105b678d5eee8d8e6278

Download Submit
\Users\Admin\AppData\Local\Temp\nsjB952.tmp\time.dll

Filesize
10KB

MD5
38977533750fe69979b2c2ac801f96e6

SHA1
74643c30cda909e649722ed0c7f267903558e92a

SHA256
b4a95a455e53372c59f91bc1b5fb9e5c8e4a10a506fa04aaf7be27048b30ae35

SHA512
e17069395ad4a17e24f7cd3c532670d40244bd5ae3887c82e3b2e4a68c250cd55e2d8b329d6ff0e2d758955ab7470534e6307779e49fe331c1fd2242ea73fd53

Download Submit
memory/2556-0-0x0000000000403000-0x0000000000404000-memory.dmp

Filesize
4KB

Download
memory/2556-4-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/2556-6-0x0000000000400000-0x000000000045E000-memory.dmp

Filesize
376KB

Download
memory/2556-49-0x0000000000400000-0x000000000045E000-memory.dmp

Filesize
376KB

Download
memory/2556-48-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download

Analysis

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