6edf4b4fd4c9444373d4cc6a9d1022a174c7088361c7212d5e7877eb030d150c

Analysis

max time kernel
95s
max time network
96s
platform
windows10-2004_x64
resource
win10v2004-20240730-en
resource tags

arch:x64arch:x86image:win10v2004-20240730-enlocale:en-usos:windows10-2004-x64system
submitted
31-07-2024 07:42

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General

Target

8b539a06f73be7631c06097dd2537e00N.exe
Size

154KB
MD5

8b539a06f73be7631c06097dd2537e00
SHA1

465f3410bf356c5d1cacc35137722a2096e2a4a3
SHA256

6edf4b4fd4c9444373d4cc6a9d1022a174c7088361c7212d5e7877eb030d150c
SHA512

9223f280ef96221a827bad46c882d2c64db08aed65c1c8426988948119cba803730f7936548768c7d030e3579f04057a6e2a7a319b24e2967d3a6d28b3c901c8
SSDEEP

3072:Ntbqvi9nMKxQbZ5x66EfACsxfcYvQd2Oew:Nt2vsx+AV4LfLOD

Score

7^/10

discovery

Malware Config

Signatures

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

Processes:

8b539a06f73be7631c06097dd2537e00N.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1266786182-1874524688-71015548-1000\Control Panel\International\Geo\Nation	8b539a06f73be7631c06097dd2537e00N.exe

Executes dropped EXE 1 IoCs

Processes:

biudfw.exe

pid process

3268 biudfw.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
3268	biudfw.exe

System Location Discovery: System Language Discovery 1 TTPs 3 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

Processes:

biudfw.execmd.exe8b539a06f73be7631c06097dd2537e00N.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	biudfw.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	8b539a06f73be7631c06097dd2537e00N.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

8b539a06f73be7631c06097dd2537e00N.exe

description	pid	process	target process
PID 3712 wrote to memory of 3268	3712	8b539a06f73be7631c06097dd2537e00N.exe	biudfw.exe
PID 3712 wrote to memory of 3268	3712	8b539a06f73be7631c06097dd2537e00N.exe	biudfw.exe
PID 3712 wrote to memory of 3268	3712	8b539a06f73be7631c06097dd2537e00N.exe	biudfw.exe
PID 3712 wrote to memory of 4512	3712	8b539a06f73be7631c06097dd2537e00N.exe	cmd.exe
PID 3712 wrote to memory of 4512	3712	8b539a06f73be7631c06097dd2537e00N.exe	cmd.exe
PID 3712 wrote to memory of 4512	3712	8b539a06f73be7631c06097dd2537e00N.exe	cmd.exe

C:\Users\Admin\AppData\Local\Temp\8b539a06f73be7631c06097dd2537e00N.exe
"C:\Users\Admin\AppData\Local\Temp\8b539a06f73be7631c06097dd2537e00N.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3712
- C:\Users\Admin\AppData\Local\Temp\biudfw.exe
  "C:\Users\Admin\AppData\Local\Temp\biudfw.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:3268
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\sanfdr.bat" "
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4512

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
154KB

MD5
168eb6fbac21f9ee4c6c8bdffb92b0c9

SHA1
a8ae033932a7e85d4921e01345796dc1eb441fa7

SHA256
3a76d440cb8a2e4ac952ce3c38016bb74d5d4cdbf06e4bb5ef70ff1267839ca6

SHA512
c20ad48fa8bbd8043126c6580e34cdfd7cf5948c969de1debd101b7ab73d33d6605d611ef83989f3791ad4d4f339c6b5675c1f530feca6b8f83063df76cb62bc

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C:\Users\Admin\AppData\Local\Temp\golfinfo.ini

Filesize
512B

MD5
2930c042c9ee5e07f321f2134a0c7edc

SHA1
ee39f41eaf6ce3c8d917a89e65959414ae0088e6

SHA256
a328475bbb730da292b83ed6cabbdbfc0616f042296f0c6fa356c5368ffc1309

SHA512
2da91d5effc116d8c8661c2a99f1d9c2aaffda0f776551dc7ad1911fdb2765591e5b441b9a1fe0090bcda8ed24d180b563ed2c127676cf1de40001e4b15b5506

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C:\Users\Admin\AppData\Local\Temp\sanfdr.bat

Filesize
276B

MD5
31429775ef6629e8cfb9db58991f6b72

SHA1
ab996535ed2155db6bb71fe93aa58f2b97517117

SHA256
44e501989e3e5bd3c85d7fd4dad7cb4c5f2110bf1986084b1251124ad03884f7

SHA512
8174bbbee728ac71f41b6a1fc24b9ad53b4444f5ca64652672d35a14e80f1bc0c8ea3c8ee64385d1c76063a11a4a53c8acdbbcf9b82abe4a155cce68556f16c7

Download Submit