887b7a1171e448b32b0bb29891ed454dd4672b01e4a2259ed26804322091b676

Analysis

max time kernel
149s
max time network
122s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
28/09/2024, 21:17

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General

Target

b4asetup.exe
Size

7.4MB
MD5

dd79ef12603e3e4ba8d32ec754802784
SHA1

c4c1c4b73ed32237401e93a8c496296c624fa722
SHA256

615544ec1d5e7b20989398f8ddd0d9f68085ec13d9a006698c665575ac307216
SHA512

ca380d68d5e77b78181a79232db7b6f2d88a94058a4d42d892fb463a601ef55a8cacea390844b455508f743e133b5cde07d155c1a998fb6ab6f23be8d0b98f40
SSDEEP

196608:TMBQ8nhblY8pzCUe1T7lJPeMwp8O5HCBtdW9MkOujwDd5cX+:cjYe+XPeMwp8OI1W9MkH6++

Score

7^/10

discovery

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
5036	is-61LCU.tmp

Loads dropped DLL 2 IoCs

pid	Process
5036	is-61LCU.tmp
5036	is-61LCU.tmp

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 2 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	b4asetup.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	is-61LCU.tmp

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 736 wrote to memory of 980	736	b4asetup.exe	83
PID 736 wrote to memory of 980	736	b4asetup.exe	83
PID 736 wrote to memory of 5036	736	b4asetup.exe	84
PID 736 wrote to memory of 5036	736	b4asetup.exe	84
PID 736 wrote to memory of 5036	736	b4asetup.exe	84

C:\Users\Admin\AppData\Local\Temp\b4asetup.exe
"C:\Users\Admin\AppData\Local\Temp\b4asetup.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:736
- C:\Windows\system32\pcaui.exe
  "C:\Windows\system32\pcaui.exe" -g {11111111-1111-1111-1111-111111111111} -x {00e60f9e-fa5a-4787-807c-aacc0d142a94} -a "Backup4all" -v "Softland" -s "This app can't run because it causes security or performance issues on Windows. A new version may be available. Check with your software provider for an updated version that runs on this version of Windows." -n 1 -f 0 -k 0 -e "C:\Users\Admin\AppData\Local\Temp\b4asetup.exe"
  2⤵
  PID:980
- C:\Users\Admin\AppData\Local\Temp\is-5SM0D.tmp\is-61LCU.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-5SM0D.tmp\is-61LCU.tmp" /SL4 $60258 "C:\Users\Admin\AppData\Local\Temp\b4asetup.exe" 7454727 77824
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  PID:5036

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\is-5SM0D.tmp\is-61LCU.tmp

Filesize
673KB

MD5
752ef985185a3dd3f3f7e8682be9aa57

SHA1
9503f8e217582ec6b472f8c5cfc89d8de02d4685

SHA256
55112b8c6dcc15e3bd9a1a6594e4fab83c26f9fd0f39927fd9d075ab32470179

SHA512
5a4345149a05b303398eb2e3383989894803539ba626d6f4e4e28574be0a7e667136437828df170f675eb5892c9ee20c4048b76ba5c8c9ff97c553d82f477e1f

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-HNMBD.tmp\_isetup\_isdecmp.dll

Filesize
13KB

MD5
a813d18268affd4763dde940246dc7e5

SHA1
c7366e1fd925c17cc6068001bd38eaef5b42852f

SHA256
e19781aabe466dd8779cb9c8fa41bbb73375447066bb34e876cf388a6ed63c64

SHA512
b310ed4cd2e94381c00a6a370fcb7cc867ebe425d705b69caaaaffdafbab91f72d357966916053e72e68ecf712f2af7585500c58bb53ec3e1d539179fcb45fb4

Download Submit
memory/736-19-0x0000000000400000-0x0000000000419000-memory.dmp

Filesize
100KB

Download
memory/736-0-0x0000000000400000-0x0000000000419000-memory.dmp

Filesize
100KB

Download
memory/736-2-0x0000000000401000-0x000000000040A000-memory.dmp

Filesize
36KB

Download
memory/5036-28-0x0000000000400000-0x00000000004B8000-memory.dmp

Filesize
736KB

Download
memory/5036-32-0x0000000000400000-0x00000000004B8000-memory.dmp

Filesize
736KB

Download
memory/5036-22-0x0000000000400000-0x00000000004B8000-memory.dmp

Filesize
736KB

Download
memory/5036-24-0x0000000000400000-0x00000000004B8000-memory.dmp

Filesize
736KB

Download
memory/5036-26-0x0000000000400000-0x00000000004B8000-memory.dmp

Filesize
736KB

Download
memory/5036-7-0x0000000000400000-0x00000000004B8000-memory.dmp

Filesize
736KB

Download
memory/5036-30-0x0000000000400000-0x00000000004B8000-memory.dmp

Filesize
736KB

Download
memory/5036-20-0x0000000000400000-0x00000000004B8000-memory.dmp

Filesize
736KB

Download
memory/5036-34-0x0000000000400000-0x00000000004B8000-memory.dmp

Filesize
736KB

Download
memory/5036-36-0x0000000000400000-0x00000000004B8000-memory.dmp

Filesize
736KB

Download
memory/5036-38-0x0000000000400000-0x00000000004B8000-memory.dmp

Filesize
736KB

Download
memory/5036-40-0x0000000000400000-0x00000000004B8000-memory.dmp

Filesize
736KB

Download
memory/5036-42-0x0000000000400000-0x00000000004B8000-memory.dmp

Filesize
736KB

Download
memory/5036-44-0x0000000000400000-0x00000000004B8000-memory.dmp

Filesize
736KB

Download
memory/5036-46-0x0000000000400000-0x00000000004B8000-memory.dmp

Filesize
736KB

Download