bf575ce1c9425bc44f5cabbc34366e0e92ef369db0a8b69942c5bdb1cca9b800

Analysis

max time kernel
26s
max time network
31s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
20-12-2022 10:41

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General

Target

bf575ce1c9425bc44f5cabbc34366e0e92ef369db0a8b69942c5bdb1cca9b800.exe
Size

138KB
MD5

f62bb82db62dd6b80908dcd79ea51fb2
SHA1

e635ba1b935adf31ffd055d71884098567b3dd4f
SHA256

bf575ce1c9425bc44f5cabbc34366e0e92ef369db0a8b69942c5bdb1cca9b800
SHA512

869863239f231d3bea636a98f7adb8d6f04f60fb2cacc5ef8d8d87bfaf327abc57668e0cc1e8f10adcb7156646ff75ff67fb3f06f22b25797220eccd91b93e08
SSDEEP

3072:dsFd0klDWOsja1mrT0CowNJ8s540uUf0WccH2hgcD:QWHrYNwNeQEBgc

Score

8^/10

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
3796	vFwHWlccClan.exe
4852	juzIfIFtSlan.exe

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-1-5-21-4246620582-653642754-1174164128-1000\Control Panel\International\Geo\Nation	bf575ce1c9425bc44f5cabbc34366e0e92ef369db0a8b69942c5bdb1cca9b800.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Runs net.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3228	bf575ce1c9425bc44f5cabbc34366e0e92ef369db0a8b69942c5bdb1cca9b800.exe
3228	bf575ce1c9425bc44f5cabbc34366e0e92ef369db0a8b69942c5bdb1cca9b800.exe
3228	bf575ce1c9425bc44f5cabbc34366e0e92ef369db0a8b69942c5bdb1cca9b800.exe
3228	bf575ce1c9425bc44f5cabbc34366e0e92ef369db0a8b69942c5bdb1cca9b800.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 3228 wrote to memory of 3796	3228	bf575ce1c9425bc44f5cabbc34366e0e92ef369db0a8b69942c5bdb1cca9b800.exe	88
PID 3228 wrote to memory of 3796	3228	bf575ce1c9425bc44f5cabbc34366e0e92ef369db0a8b69942c5bdb1cca9b800.exe	88
PID 3228 wrote to memory of 4852	3228	bf575ce1c9425bc44f5cabbc34366e0e92ef369db0a8b69942c5bdb1cca9b800.exe	89
PID 3228 wrote to memory of 4852	3228	bf575ce1c9425bc44f5cabbc34366e0e92ef369db0a8b69942c5bdb1cca9b800.exe	89
PID 3228 wrote to memory of 2604	3228	bf575ce1c9425bc44f5cabbc34366e0e92ef369db0a8b69942c5bdb1cca9b800.exe	45
PID 3228 wrote to memory of 4920	3228	bf575ce1c9425bc44f5cabbc34366e0e92ef369db0a8b69942c5bdb1cca9b800.exe	90
PID 3228 wrote to memory of 4920	3228	bf575ce1c9425bc44f5cabbc34366e0e92ef369db0a8b69942c5bdb1cca9b800.exe	90

C:\Windows\system32\sihost.exe
sihost.exe
1⤵
PID:2604

C:\Users\Admin\AppData\Local\Temp\bf575ce1c9425bc44f5cabbc34366e0e92ef369db0a8b69942c5bdb1cca9b800.exe
"C:\Users\Admin\AppData\Local\Temp\bf575ce1c9425bc44f5cabbc34366e0e92ef369db0a8b69942c5bdb1cca9b800.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3228
- C:\Users\Admin\AppData\Local\Temp\vFwHWlccClan.exe
  "C:\Users\Admin\AppData\Local\Temp\vFwHWlccClan.exe" 8 LAN
  2⤵
  - Executes dropped EXE
  PID:3796
- C:\Users\Admin\AppData\Local\Temp\juzIfIFtSlan.exe
  "C:\Users\Admin\AppData\Local\Temp\juzIfIFtSlan.exe" 8 LAN
  2⤵
  - Executes dropped EXE
  PID:4852
- C:\Windows\System32\net.exe
  "C:\Windows\System32\net.exe" stop "audioendpointbuilder" /y
  2⤵
  PID:4920
- - C:\Windows\system32\net1.exe
    C:\Windows\system32\net1 stop "audioendpointbuilder" /y
    3⤵
    PID:3876
- C:\Windows\System32\net.exe
  "C:\Windows\System32\net.exe" stop "samss" /y
  2⤵
  PID:220
- - C:\Windows\system32\net1.exe
    C:\Windows\system32\net1 stop "samss" /y
    3⤵
    PID:5104

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\juzIfIFtSlan.exe

Filesize
138KB

MD5
f62bb82db62dd6b80908dcd79ea51fb2

SHA1
e635ba1b935adf31ffd055d71884098567b3dd4f

SHA256
bf575ce1c9425bc44f5cabbc34366e0e92ef369db0a8b69942c5bdb1cca9b800

SHA512
869863239f231d3bea636a98f7adb8d6f04f60fb2cacc5ef8d8d87bfaf327abc57668e0cc1e8f10adcb7156646ff75ff67fb3f06f22b25797220eccd91b93e08

Download Submit
C:\Users\Admin\AppData\Local\Temp\juzIfIFtSlan.exe

Filesize
138KB

MD5
f62bb82db62dd6b80908dcd79ea51fb2

SHA1
e635ba1b935adf31ffd055d71884098567b3dd4f

SHA256
bf575ce1c9425bc44f5cabbc34366e0e92ef369db0a8b69942c5bdb1cca9b800

SHA512
869863239f231d3bea636a98f7adb8d6f04f60fb2cacc5ef8d8d87bfaf327abc57668e0cc1e8f10adcb7156646ff75ff67fb3f06f22b25797220eccd91b93e08

Download Submit
C:\Users\Admin\AppData\Local\Temp\vFwHWlccClan.exe

Filesize
138KB

MD5
f62bb82db62dd6b80908dcd79ea51fb2

SHA1
e635ba1b935adf31ffd055d71884098567b3dd4f

SHA256
bf575ce1c9425bc44f5cabbc34366e0e92ef369db0a8b69942c5bdb1cca9b800

SHA512
869863239f231d3bea636a98f7adb8d6f04f60fb2cacc5ef8d8d87bfaf327abc57668e0cc1e8f10adcb7156646ff75ff67fb3f06f22b25797220eccd91b93e08

Download Submit
C:\Users\Admin\AppData\Local\Temp\vFwHWlccClan.exe

Filesize
138KB

MD5
f62bb82db62dd6b80908dcd79ea51fb2

SHA1
e635ba1b935adf31ffd055d71884098567b3dd4f

SHA256
bf575ce1c9425bc44f5cabbc34366e0e92ef369db0a8b69942c5bdb1cca9b800

SHA512
869863239f231d3bea636a98f7adb8d6f04f60fb2cacc5ef8d8d87bfaf327abc57668e0cc1e8f10adcb7156646ff75ff67fb3f06f22b25797220eccd91b93e08

Download Submit
memory/2604-140-0x00007FF643620000-0x00007FF643784000-memory.dmp

Filesize
1.4MB

Download
memory/2788-143-0x00007FF643620000-0x00007FF643784000-memory.dmp

Filesize
1.4MB

Download