b931c903ff14d82dce6daf9934209b5c71f982359847ed3e342e25fa88c99f03

Analysis

max time kernel
122s
max time network
122s
platform
windows7_x64
resource
win7-en-20211208
submitted
01/01/2022, 14:36

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General

Target
rUtfalBbvXy6eEmMrseqpFHx.exe
Size 2.0MB
Sample220101-ryw8dsgbhj
SHA256 c6ac7d4850131a5422da8170ed1a51f939c4b3b1f312478498e8aa7df374e840
MD5 93156ea35c0014003d9e87bf82a79b33
SHA1 1eacd5ec484996a4dab233cd569c54d1594fb3a9
SHA512 024611682daf2ca96112253d1b2cf8afed22639363c9684353a89e396a89e032a4f7ce8236557416e27dd635e3ee82b332aa3e0bfeba0affc439bdd28a3ea322
MD5 SHA1 SHA512

Score

9^/10

spyware stealer

Malware Config

Signatures

NirSoft WebBrowserPassView 2 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral5/files/0x0008000000012220-55.dat	WebBrowserPassView
behavioral5/memory/772-57-0x0000000000400000-0x000000000047C000-memory.dmp	WebBrowserPassView

Nirsoft 2 IoCs

resource	yara_rule
behavioral5/files/0x0008000000012220-55.dat	Nirsoft
behavioral5/memory/772-57-0x0000000000400000-0x000000000047C000-memory.dmp	Nirsoft

Executes dropped EXE 1 IoCs

pid	Process
772	11111.exe

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

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
4	ip-api.com

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
772	11111.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2008 wrote to memory of 772	2008	rUtfalBbvXy6eEmMrseqpFHx.exe	27
PID 2008 wrote to memory of 772	2008	rUtfalBbvXy6eEmMrseqpFHx.exe	27
PID 2008 wrote to memory of 772	2008	rUtfalBbvXy6eEmMrseqpFHx.exe	27
PID 2008 wrote to memory of 772	2008	rUtfalBbvXy6eEmMrseqpFHx.exe	27

C:\Users\Admin\AppData\Local\Temp\rUtfalBbvXy6eEmMrseqpFHx.exe
"C:\Users\Admin\AppData\Local\Temp\rUtfalBbvXy6eEmMrseqpFHx.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2008
- C:\Users\Admin\AppData\Local\Temp\11111.exe
  C:\Users\Admin\AppData\Local\Temp\11111.exe /stab C:\Users\Admin\AppData\Local\Temp\fj4ghga23_fsa.txt
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  PID:772

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/772-56-0x00000000760F1000-0x00000000760F3000-memory.dmp

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memory/772-57-0x0000000000400000-0x000000000047C000-memory.dmp

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