e0a2114a167eb8a90418cfd46f7af3272c72d0bd036b2046165ac85827113748

Analysis

max time kernel
142s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
21/03/2024, 00:43

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General

Target
da40347139bc3f538ce1712786975973.dll
Size 49KB
Sample240321-a225dafe98
SHA256 e0a2114a167eb8a90418cfd46f7af3272c72d0bd036b2046165ac85827113748
MD5 da40347139bc3f538ce1712786975973
SHA1 069ef334c01933d727c8228e870e4015b0b1fdbf
SHA512 03264a3630b2652ae013651ce64d2ef9e76c38b118b840b4eba1c25d787642c85b0e09c8cb3fef587717dbae17822b8162b956d01459b38ec41d394d6bb760a6
SSDEEP 768:qXxSxs2rslXxYxQcZDCZvyYEc7UtRX6rouUA0KrnCkwYHv:q+sEsP+ZDaDKJMPB0mn4Kv
MD5 SHA1 SHA512 SSDEEP

Score

7^/10

adware stealer upx

Malware Config

Signatures

UPX packed file 2 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/2108-0-0x0000000010000000-0x000000001001E000-memory.dmp	upx
behavioral2/memory/2108-1-0x0000000010000000-0x000000001001E000-memory.dmp	upx

Installs/modifies Browser Helper Object 2 TTPs 1 IoCs

BHOs are DLL modules which act as plugins for Internet Explorer.

stealer adware

Modify Registry

T1112

Browser Extensions

T1176

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{1557B435-8242-4686-9AA3-9265BF7525A4}	rundll32.exe

Modifies registry class 4 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1557B435-8242-4686-9AA3-9265BF7525A4}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\da40347139bc3f538ce1712786975973.dll"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1557B435-8242-4686-9AA3-9265BF7525A4}\InprocServer32\ThreadingModel = "Both"	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1557B435-8242-4686-9AA3-9265BF7525A4}	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1557B435-8242-4686-9AA3-9265BF7525A4}\InprocServer32	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1548 wrote to memory of 2108	1548	rundll32.exe	96
PID 1548 wrote to memory of 2108	1548	rundll32.exe	96
PID 1548 wrote to memory of 2108	1548	rundll32.exe	96

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\da40347139bc3f538ce1712786975973.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1548
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\da40347139bc3f538ce1712786975973.dll,#1
  2⤵
  - Installs/modifies Browser Helper Object
  - Modifies registry class
  PID:2108

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=3952 --field-trial-handle=2656,i,16940681401824032220,151921362336696246,262144 --variations-seed-version /prefetch:8
1⤵
PID:2228

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Browser Extensions

T1176

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2108-0-0x0000000010000000-0x000000001001E000-memory.dmp

Download

memory/2108-1-0x0000000010000000-0x000000001001E000-memory.dmp