337a646e6f1a641d9471b840ee21bff858e6ba24538a4f815191be85e5003e70

Analysis

max time kernel
143s
max time network
32s
platform
windows7_x64
resource
win7-20230220-en
resource tags

arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
submitted
05/05/2023, 18:44

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General

Target

A.exe
Size

222KB
MD5

8104093918b6f2d2004535b24b1533ba
SHA1

f9cf4ae46a44ab7a39f35614167b2be9f1d66460
SHA256

337a646e6f1a641d9471b840ee21bff858e6ba24538a4f815191be85e5003e70
SHA512

d43dc6e765a528755d1004b591d580c8d3e5a49800980dab1073848f26c67c0350fe560762b46a3602e799ea8ee861bcc4f829020d5479e48c8ed6871fd139a1
SSDEEP

6144:O1vaKFbcprS5qlrCkxLjgmOA05HTr7N1DPz:SaKFbcVS5FUOAe7r

Score

9^/10

spyware stealer upx

Malware Config

Signatures

NirSoft WebBrowserPassView 3 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral1/memory/944-54-0x0000000000400000-0x0000000000482000-memory.dmp	WebBrowserPassView
behavioral1/memory/944-55-0x0000000000400000-0x0000000000482000-memory.dmp	WebBrowserPassView
behavioral1/memory/944-56-0x0000000000400000-0x0000000000482000-memory.dmp	WebBrowserPassView

Nirsoft 3 IoCs

resource	yara_rule
behavioral1/memory/944-54-0x0000000000400000-0x0000000000482000-memory.dmp	Nirsoft
behavioral1/memory/944-55-0x0000000000400000-0x0000000000482000-memory.dmp	Nirsoft
behavioral1/memory/944-56-0x0000000000400000-0x0000000000482000-memory.dmp	Nirsoft

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral1/memory/944-54-0x0000000000400000-0x0000000000482000-memory.dmp	upx
behavioral1/memory/944-55-0x0000000000400000-0x0000000000482000-memory.dmp	upx
behavioral1/memory/944-56-0x0000000000400000-0x0000000000482000-memory.dmp	upx

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
944	A.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
944	A.exe

C:\Users\Admin\AppData\Local\Temp\A.exe
"C:\Users\Admin\AppData\Local\Temp\A.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
PID:944

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

T1081

Discovery

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/944-54-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/944-55-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/944-56-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download