d2c2a3a97602dce6d7bfdf2281370b99aa1db01d2ef2987e864ec9dc95952316

Analysis

max time kernel
125s
max time network
127s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
03/10/2024, 21:36

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General

Target

uninst.exe
Size

36KB
MD5

ca840c1e2f582ddd65e3592b1d109de8
SHA1

39e2f2b272abcc08c2c4594cc3cca7bacfa13b97
SHA256

9649e5f6e8044919460176d64da5d5fc670a60fddeee7d65ee07d021481b55af
SHA512

e2d6e73d2a4853430e5420538ccc30d846c0f5ff5259d6f45f26c12627e096c22d4d78730e6911a6e79783d45b89987ec69f76bae935d04537a05449183bb0cc
SSDEEP

768:USup23EQCjlQRB8/ewZ1iU6nyYFxbssT/F/O71mJ5+N86:Ru4EQalMK/ewGnh0mJE7

Score

7^/10

discovery

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
2536	Au_.exe

Executes dropped EXE 1 IoCs

pid	Process
2536	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	Au_.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	uninst.exe

NSIS installer 2 IoCs

installer

resource	yara_rule
behavioral8/files/0x00070000000235b6-4.dat	nsis_installer_1
behavioral8/files/0x00070000000235b6-4.dat	nsis_installer_2

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2020 wrote to memory of 2536	2020	uninst.exe	89
PID 2020 wrote to memory of 2536	2020	uninst.exe	89
PID 2020 wrote to memory of 2536	2020	uninst.exe	89

C:\Users\Admin\AppData\Local\Temp\uninst.exe
"C:\Users\Admin\AppData\Local\Temp\uninst.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2020
- 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\
  2⤵
  - Deletes itself
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:2536

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=4444,i,1330210614411927383,9239043499051775691,262144 --variations-seed-version --mojo-platform-channel-handle=4464 /prefetch:8
1⤵
PID:2744

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\~nsu.tmp\Au_.exe

Filesize
36KB

MD5
ca840c1e2f582ddd65e3592b1d109de8

SHA1
39e2f2b272abcc08c2c4594cc3cca7bacfa13b97

SHA256
9649e5f6e8044919460176d64da5d5fc670a60fddeee7d65ee07d021481b55af

SHA512
e2d6e73d2a4853430e5420538ccc30d846c0f5ff5259d6f45f26c12627e096c22d4d78730e6911a6e79783d45b89987ec69f76bae935d04537a05449183bb0cc

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