44961945bd5c37d15f427f4c75d66bc663c9de351c42f866db54e939864564e0

Analysis

max time kernel
29s
max time network
74s
platform
windows10-2004_x64
resource
win10v2004-20230703-en
resource tags

arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
submitted
14-08-2023 06:01

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General

Target

bf575ce1c9425bc44f5cabbc34366e0e92ef369db0a8b69942c5bdb1cca9b800.exe
Size

138KB
MD5

f62bb82db62dd6b80908dcd79ea51fb2
SHA1

e635ba1b935adf31ffd055d71884098567b3dd4f
SHA256

bf575ce1c9425bc44f5cabbc34366e0e92ef369db0a8b69942c5bdb1cca9b800
SHA512

869863239f231d3bea636a98f7adb8d6f04f60fb2cacc5ef8d8d87bfaf327abc57668e0cc1e8f10adcb7156646ff75ff67fb3f06f22b25797220eccd91b93e08
SSDEEP

3072:dsFd0klDWOsja1mrT0CowNJ8s540uUf0WccH2hgcD:QWHrYNwNeQEBgc

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

Processes:

RthfOCoLflan.exe

pid process

4100 RthfOCoLflan.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Runs net.exe

pid	process
4100	RthfOCoLflan.exe

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

bf575ce1c9425bc44f5cabbc34366e0e92ef369db0a8b69942c5bdb1cca9b800.exe

description	pid	process	target process
PID 1548 wrote to memory of 4100	1548	bf575ce1c9425bc44f5cabbc34366e0e92ef369db0a8b69942c5bdb1cca9b800.exe	RthfOCoLflan.exe
PID 1548 wrote to memory of 4100	1548	bf575ce1c9425bc44f5cabbc34366e0e92ef369db0a8b69942c5bdb1cca9b800.exe	RthfOCoLflan.exe

C:\Users\Admin\AppData\Local\Temp\bf575ce1c9425bc44f5cabbc34366e0e92ef369db0a8b69942c5bdb1cca9b800.exe
"C:\Users\Admin\AppData\Local\Temp\bf575ce1c9425bc44f5cabbc34366e0e92ef369db0a8b69942c5bdb1cca9b800.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1548

C:\Users\Admin\AppData\Local\Temp\RthfOCoLflan.exe
"C:\Users\Admin\AppData\Local\Temp\RthfOCoLflan.exe" 8 LAN
2⤵
- Executes dropped EXE
PID:4100

C:\Users\Admin\AppData\Local\Temp\BiefZxsFBlan.exe
"C:\Users\Admin\AppData\Local\Temp\BiefZxsFBlan.exe" 8 LAN
2⤵
PID:2544

C:\Windows\System32\net.exe
"C:\Windows\System32\net.exe" stop "audioendpointbuilder" /y
2⤵
PID:3296

C:\Windows\system32\net1.exe
C:\Windows\system32\net1 stop "audioendpointbuilder" /y
3⤵
PID:764

C:\Windows\System32\net.exe
"C:\Windows\System32\net.exe" stop "samss" /y
2⤵
PID:3324

C:\Windows\system32\net1.exe
C:\Windows\system32\net1 stop "samss" /y
3⤵
PID:4440

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\BiefZxsFBlan.exe
Filesize
138KB

MD5
f62bb82db62dd6b80908dcd79ea51fb2

SHA1
e635ba1b935adf31ffd055d71884098567b3dd4f

SHA256
bf575ce1c9425bc44f5cabbc34366e0e92ef369db0a8b69942c5bdb1cca9b800

SHA512
869863239f231d3bea636a98f7adb8d6f04f60fb2cacc5ef8d8d87bfaf327abc57668e0cc1e8f10adcb7156646ff75ff67fb3f06f22b25797220eccd91b93e08

Download Submit
C:\Users\Admin\AppData\Local\Temp\BiefZxsFBlan.exe
Filesize
138KB

MD5
f62bb82db62dd6b80908dcd79ea51fb2

SHA1
e635ba1b935adf31ffd055d71884098567b3dd4f

SHA256
bf575ce1c9425bc44f5cabbc34366e0e92ef369db0a8b69942c5bdb1cca9b800

SHA512
869863239f231d3bea636a98f7adb8d6f04f60fb2cacc5ef8d8d87bfaf327abc57668e0cc1e8f10adcb7156646ff75ff67fb3f06f22b25797220eccd91b93e08

Download Submit
C:\Users\Admin\AppData\Local\Temp\RthfOCoLflan.exe
Filesize
138KB

MD5
f62bb82db62dd6b80908dcd79ea51fb2

SHA1
e635ba1b935adf31ffd055d71884098567b3dd4f

SHA256
bf575ce1c9425bc44f5cabbc34366e0e92ef369db0a8b69942c5bdb1cca9b800

SHA512
869863239f231d3bea636a98f7adb8d6f04f60fb2cacc5ef8d8d87bfaf327abc57668e0cc1e8f10adcb7156646ff75ff67fb3f06f22b25797220eccd91b93e08

Download Submit
C:\Users\Admin\AppData\Local\Temp\RthfOCoLflan.exe
Filesize
138KB

MD5
f62bb82db62dd6b80908dcd79ea51fb2

SHA1
e635ba1b935adf31ffd055d71884098567b3dd4f

SHA256
bf575ce1c9425bc44f5cabbc34366e0e92ef369db0a8b69942c5bdb1cca9b800

SHA512
869863239f231d3bea636a98f7adb8d6f04f60fb2cacc5ef8d8d87bfaf327abc57668e0cc1e8f10adcb7156646ff75ff67fb3f06f22b25797220eccd91b93e08

Download Submit
C:\Users\Admin\AppData\Local\Temp\RthfOCoLflan.exe
Filesize
138KB

MD5
f62bb82db62dd6b80908dcd79ea51fb2

SHA1
e635ba1b935adf31ffd055d71884098567b3dd4f

SHA256
bf575ce1c9425bc44f5cabbc34366e0e92ef369db0a8b69942c5bdb1cca9b800

SHA512
869863239f231d3bea636a98f7adb8d6f04f60fb2cacc5ef8d8d87bfaf327abc57668e0cc1e8f10adcb7156646ff75ff67fb3f06f22b25797220eccd91b93e08

Download Submit
memory/2436-151-0x00007FF6365D0000-0x00007FF636734000-memory.dmp

Filesize
1.4MB

Download
memory/2468-152-0x00007FF6365D0000-0x00007FF636734000-memory.dmp

Filesize
1.4MB

Download