d55da147d54f001f69174db881fdc3ddb83a7173f87b8f960b8ca0a81dcabc51

Analysis

max time kernel
135s
max time network
126s
platform
windows10-2004_x64
resource
win10v2004-20240709-en
resource tags

arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
submitted
25/07/2024, 19:33

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General

Target

$SYSDIR/$SYSDIR/u_$_2_.exe
Size

56KB
MD5

5b14aa4f51f67af10cf159d6f583b5e0
SHA1

3f3b9ff3b830cbd89b6a9cede4d9ce04db3780f0
SHA256

d3036827d6e80c6efc873103ecc19553606e6a05114c7307cd7c7f525777adcb
SHA512

d3d3b5e48a04d7adbdf8a5b6ad2f899ef28871a07171901f8439e2da9286f37404cfc2edc090fa9c7a39be5b24852f77568b21d23c156b784b9ed2f1c5bc672c
SSDEEP

768:CHJd0TpH2+bQ2dUWVX9Hfv1JMWmtLEJOyuBxG0D3mjfS3XJxck6DZc/MwCaZ0fRE:CpgpHzb9dZVX9fHMvG0D3XJxck8aYf2z

Score

7^/10

discovery

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2056	Au_.exe

Loads dropped DLL 1 IoCs

pid	Process
2056	Au_.exe

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	u_$_2_.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Au_.exe

NSIS installer 2 IoCs

installer

resource	yara_rule
behavioral10/files/0x000b000000023469-3.dat	nsis_installer_1
behavioral10/files/0x000b000000023469-3.dat	nsis_installer_2

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3996 wrote to memory of 2056	3996	u_$_2_.exe	84
PID 3996 wrote to memory of 2056	3996	u_$_2_.exe	84
PID 3996 wrote to memory of 2056	3996	u_$_2_.exe	84

C:\Users\Admin\AppData\Local\Temp\$SYSDIR\$SYSDIR\u_$_2_.exe
"C:\Users\Admin\AppData\Local\Temp\$SYSDIR\$SYSDIR\u_$_2_.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3996
- C:\Users\Admin\AppData\Local\Temp\~nsu.tmp\Au_.exe
  "C:\Users\Admin\AppData\Local\Temp\~nsu.tmp\Au_.exe" _?=C:\Users\Admin\AppData\Local\Temp\$SYSDIR\$SYSDIR\
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  PID:2056

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\nsq955B.tmp\System.dll

Filesize
11KB

MD5
c17103ae9072a06da581dec998343fc1

SHA1
b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

SHA256
dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

SHA512
d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

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C:\Users\Admin\AppData\Local\Temp\~nsu.tmp\Au_.exe

Filesize
56KB

MD5
5b14aa4f51f67af10cf159d6f583b5e0

SHA1
3f3b9ff3b830cbd89b6a9cede4d9ce04db3780f0

SHA256
d3036827d6e80c6efc873103ecc19553606e6a05114c7307cd7c7f525777adcb

SHA512
d3d3b5e48a04d7adbdf8a5b6ad2f899ef28871a07171901f8439e2da9286f37404cfc2edc090fa9c7a39be5b24852f77568b21d23c156b784b9ed2f1c5bc672c

Download Submit