2aa9f15810e2c55dbc8522e386d76d1a8fb3a63a712b33e17bd2139a7b45c76b

Resubmissions

14-05-2024 18:33

240514-w7fzzsac5z 7

19-02-2024 06:44

240219-hhfq2aba64 7

Analysis

max time kernel
125s
max time network
133s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
14-05-2024 18:33

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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
4916	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
behavioral16/files/0x00080000000235ba-3.dat	nsis_installer_1
behavioral16/files/0x00080000000235ba-3.dat	nsis_installer_2

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4912 wrote to memory of 4916	4912	uninstall_fc.exe	90
PID 4912 wrote to memory of 4916	4912	uninstall_fc.exe	90
PID 4912 wrote to memory of 4916	4912	uninstall_fc.exe	90

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:4912
- 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:4916

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 --field-trial-handle=4160,i,11746347647270949551,7786733067759450703,262144 --variations-seed-version --mojo-platform-channel-handle=1288 /prefetch:8
1⤵
PID:2856

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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