64c665b2dbdaca4a20aaef96d625091757008c88b49d71070e4eefcd45d986d8

Resubmissions

10-05-2024 17:13

240510-vrrk4sgd7t 10

10-05-2024 17:09

240510-vphv7abd29 10

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
10-05-2024 17:09

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General

Target

High Priority/OnlineInstaller.exe
Size

3.6MB
MD5

4b042bfd9c11ab6a3fb78fa5c34f55d0
SHA1

b0f506640c205d3fbcfe90bde81e49934b870eab
SHA256

59c662a5207c6806046205348b22ee45da3f685fe022556716dbbd6643e61834
SHA512

dae5957c8eee5ae7dd106346f7ea349771b693598f3d4d54abb39940c3d1a0b5731c8d4e07c29377838988a1e93dcd8c2946ce0515af87de61bca6de450409d3
SSDEEP

98304:ghXqJiXwwhwvxR7FI6wYroMUQrYeoFj6bjsKzZx7T7:ghXqsX3hs79bxiEbgKX7

Score

8^/10

Malware Config

Signatures

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File created	C:\Windows\system32\drivers\iaStorE.sys	OnlineInstaller.tmp

Executes dropped EXE 1 IoCs

pid	Process
3224	OnlineInstaller.tmp

Checks for any installed AV software in registry 1 TTPs 1 IoCs

Security Software Discovery

T1518.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Avira	OnlineInstaller.exe

Drops file in System32 directory 6 IoCs

description	ioc	Process
File created	C:\Windows\system32\KeyHook64.dll	OnlineInstaller.tmp
File created	C:\Windows\system32\KH.dat	OnlineInstaller.tmp
File created	C:\Windows\system32\usp20.dll	OnlineInstaller.tmp
File created	C:\Windows\system32\UP.dat	OnlineInstaller.tmp
File created	C:\Windows\system32\spoolsr.exe	OnlineInstaller.tmp
File created	C:\Windows\system32\MS.dat	OnlineInstaller.tmp

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	1108	OnlineInstaller.exe
Token: SeLoadDriverPrivilege	1108	OnlineInstaller.exe
Token: SeDebugPrivilege	3224	OnlineInstaller.tmp
Token: SeLoadDriverPrivilege	3224	OnlineInstaller.tmp

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1108 wrote to memory of 3224	1108	OnlineInstaller.exe	83
PID 1108 wrote to memory of 3224	1108	OnlineInstaller.exe	83
PID 1108 wrote to memory of 3224	1108	OnlineInstaller.exe	83

C:\Users\Admin\AppData\Local\Temp\High Priority\OnlineInstaller.exe
"C:\Users\Admin\AppData\Local\Temp\High Priority\OnlineInstaller.exe"
1⤵
- Checks for any installed AV software in registry
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1108
- C:\Users\Admin\AppData\Local\Temp\OnlineInstaller.tmp
  C:\Users\Admin\AppData\Local\Temp\OnlineInstaller.tmp -install
  2⤵
  - Drops file in Drivers directory
  - Executes dropped EXE
  - Drops file in System32 directory
  - Suspicious use of AdjustPrivilegeToken
  PID:3224

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Software Discovery

T1518

Security Software Discovery

T1518.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\OnlineInstaller.tmp

Filesize
3.6MB

MD5
4b042bfd9c11ab6a3fb78fa5c34f55d0

SHA1
b0f506640c205d3fbcfe90bde81e49934b870eab

SHA256
59c662a5207c6806046205348b22ee45da3f685fe022556716dbbd6643e61834

SHA512
dae5957c8eee5ae7dd106346f7ea349771b693598f3d4d54abb39940c3d1a0b5731c8d4e07c29377838988a1e93dcd8c2946ce0515af87de61bca6de450409d3

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