floxif | c7f8de00647ea90d7381835b6473cdb9fee36eaee9f0bb5a4b79457034e4bdef

General

Target

c7f8de00647ea90d7381835b6473cdb9fee36eaee9f0bb5a4b79457034e4bdef.exe
Size

554KB
MD5

0bb06148fac3c563604b98644a0e5f76
SHA1

d34b61347864c40bb900357467318f7f6e50a296
SHA256

c7f8de00647ea90d7381835b6473cdb9fee36eaee9f0bb5a4b79457034e4bdef
SHA512

ea2a9b03861beb22228ddc7504cfb0d9f988579936aec6825a83a1a01a52f4c6f98c7ccaa2174d15e377ba8532f77f741995eb4dff11edb7b898b0413eef69c6
SSDEEP

12288:dNaDfsMMSsMMfBvMcsCMcs/fzQ0+RT/S1QLxtnu3R1MZEJIXBjvrEH75:dIDfsMMSsMMfBvMcsCMcs/c0+RT/pltY

Score

10^/10

floxif backdoor discovery persistence privilege_escalation 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/0x00080000000120f9-1.dat	floxif

Event Triggered Execution: AppInit DLLs 1 TTPs
Adversaries may establish persistence and/or elevate privileges by executing malicious content triggered by AppInit DLLs loaded into processes.
persistence privilege_escalation

AppInit DLLs
T1546.010

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral1/files/0x00080000000120f9-1.dat	acprotect

Loads dropped DLL 1 IoCs

pid	Process
2168	c7f8de00647ea90d7381835b6473cdb9fee36eaee9f0bb5a4b79457034e4bdef.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:	c7f8de00647ea90d7381835b6473cdb9fee36eaee9f0bb5a4b79457034e4bdef.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral1/files/0x00080000000120f9-1.dat	upx
behavioral1/memory/2168-3-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral1/memory/2168-30-0x0000000010000000-0x0000000010030000-memory.dmp	upx

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\System\symsrv.dll	c7f8de00647ea90d7381835b6473cdb9fee36eaee9f0bb5a4b79457034e4bdef.exe
File created	\??\c:\program files\common files\system\symsrv.dll.000	c7f8de00647ea90d7381835b6473cdb9fee36eaee9f0bb5a4b79457034e4bdef.exe

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	c7f8de00647ea90d7381835b6473cdb9fee36eaee9f0bb5a4b79457034e4bdef.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2168	c7f8de00647ea90d7381835b6473cdb9fee36eaee9f0bb5a4b79457034e4bdef.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2168	c7f8de00647ea90d7381835b6473cdb9fee36eaee9f0bb5a4b79457034e4bdef.exe
Token: SeDebugPrivilege	2168	c7f8de00647ea90d7381835b6473cdb9fee36eaee9f0bb5a4b79457034e4bdef.exe

C:\Users\Admin\AppData\Local\Temp\c7f8de00647ea90d7381835b6473cdb9fee36eaee9f0bb5a4b79457034e4bdef.exe
"C:\Users\Admin\AppData\Local\Temp\c7f8de00647ea90d7381835b6473cdb9fee36eaee9f0bb5a4b79457034e4bdef.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:2168

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Event Triggered Execution

1

T1546

AppInit DLLs

1

T1546.010

Privilege Escalation

Event Triggered Execution

1

T1546

AppInit DLLs

1

T1546.010

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\mass.dat

Filesize
620B

MD5
874e4ca7cd2434b26d34fcdd102cad07

SHA1
1cee49d9265fbb5acb8a964633d140027f0fbb4d

SHA256
c301f3cc3655031cc40c2793a46bd1c41834d10634d54c8dd386039cca1f4e27

SHA512
50f36ff64c00c58083ab062ba50adb9b7cd27349db57820aa54f384549292d6acd21f69b10bd9529724c5dbfb1cfdf4eef264bed6249ca4aebe4179cf3959bc8

Download Submit
C:\Users\Admin\AppData\Local\Temp\mass.dat

Filesize
912B

MD5
1f0f073856c0ed4ad886f734e72153b1

SHA1
c08856a072e1e8d46b94a9be5e596148a106f504

SHA256
1916f62f014b14f92965ced9b2d8254cc28e17168be363e8704365b574b23b2b

SHA512
c2cdd62c638e863e9747150186b29ed5a76cdd1ed14129145afe4668d7ec87420b2694dc88c55aae17780d502687ce7bc187905f1f4a7977f05e611bf8f6f772

Download Submit
C:\Users\Admin\AppData\Local\Temp\mass.dat

Filesize
335B

MD5
157196a80259923fd263a6db921ba557

SHA1
51dda0d19f7b6d0f1de3db4c8f229fbbcae8264d

SHA256
e1652e2f3581ae530327d409c1b7d088ca8cc36323fa3086f1b8d541dca5b7d5

SHA512
25b9f13fa221673713e3101c25c5250bf00bb779323c7123724fd86e8096b4947abdcbd6b09c1b4ffab5ced5d84c601f584c2634052ae3aa0dfb8ae208121eac

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

Filesize
67KB

MD5
7574cf2c64f35161ab1292e2f532aabf

SHA1
14ba3fa927a06224dfe587014299e834def4644f

SHA256
de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085

SHA512
4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

Download Submit
memory/2168-3-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/2168-17-0x0000000000414000-0x0000000000417000-memory.dmp

Filesize
12KB

Download
memory/2168-30-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download

Analysis

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