719ce6fa8d023a0ecccf4c2caeda8961debacf6d23444f76e7c9a50274bcd33e

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21-05-2024 11:02

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21-05-2024 11:01

240521-m4sd6sbb38 3

21-05-2024 10:58

240521-m25xgsba9t 7

Analysis

max time kernel
233s
max time network
302s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
21-05-2024 10:58

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General

Target

$TEMP/uninstall_fc.exe
Size

59KB
MD5

9b5a8a1e1a13cb6f5d344cf5f92866f9
SHA1

db6e74fa5b1abbd8a412e21b437d03d173617bf9
SHA256

9c3e4cbf323170eaf1d82a59496557f8013b65d0853bb05b7c054f0d5d856889
SHA512

2dfc4dae9f743831e2e67861e5cd5a118a967fdba9b0c2655e9e71614fa76762b3fcc175feb98c7801d3f753cfe1156168f9125c905b14c28caa0babb4566aaa
SSDEEP

1536:spgpHzb9dZVX9fHMvG0D3XJzQEyS+EhuL0:6gXdZt9P6D3XJkiU0

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
3720	Au_.exe

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

System Information Discovery
T1082

NSIS installer 2 IoCs

installer

resource	yara_rule
behavioral8/files/0x0007000000023263-3.dat	nsis_installer_1
behavioral8/files/0x0007000000023263-3.dat	nsis_installer_2

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3404 wrote to memory of 3720	3404	uninstall_fc.exe	91
PID 3404 wrote to memory of 3720	3404	uninstall_fc.exe	91
PID 3404 wrote to memory of 3720	3404	uninstall_fc.exe	91

C:\Users\Admin\AppData\Local\Temp\$TEMP\uninstall_fc.exe
"C:\Users\Admin\AppData\Local\Temp\$TEMP\uninstall_fc.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:3404
- 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\$TEMP\
  2⤵
  - Executes dropped EXE
  PID:3720

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 --no-appcompat-clear --mojo-platform-channel-handle=4440 --field-trial-handle=2256,i,6670388345726423024,18382795228658886258,262144 --variations-seed-version /prefetch:8
1⤵
PID:3296

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

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\~nsu.tmp\Au_.exe

Filesize
59KB

MD5
9b5a8a1e1a13cb6f5d344cf5f92866f9

SHA1
db6e74fa5b1abbd8a412e21b437d03d173617bf9

SHA256
9c3e4cbf323170eaf1d82a59496557f8013b65d0853bb05b7c054f0d5d856889

SHA512
2dfc4dae9f743831e2e67861e5cd5a118a967fdba9b0c2655e9e71614fa76762b3fcc175feb98c7801d3f753cfe1156168f9125c905b14c28caa0babb4566aaa

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