a17a425915f6029d4064fb28acee1e781b9272b0010cbadc731c7a58cd8eb4b4

Analysis

max time kernel
150s
max time network
125s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260911-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
14/10/2026, 04:03

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General

Target
jaffacakes118_not-a-virus.HEUR.AdWare.Win32.BrainInst.heur.exe
Size 388KB
Sample261014-eml7tsyscs
SHA256 a17a425915f6029d4064fb28acee1e781b9272b0010cbadc731c7a58cd8eb4b4
MD5 94c90357fe28aaefd854ca95eec076e8
SHA1 72570c453ca114cf56fca1ec92be18a085e8b397
SHA512 0b0506d90faabc75e108c76dcf17700992b3443f4edacff2ca3cbf7b1802689078cb39aececaa45d57d0ad91f3a601fb5735afb166e435df48bd0f721d399826
SSDEEP 6144:9805yHbwOUo6RwLfurlHiIsmyh5yCuCak3vSGo4cFpdc/eekNpoSHzeez:q05OyrfRHiXhquv7Ypdc/eeqpoSTeez
TLSH
T11784BD6F4B280AF4D522B1F41B7E5E425D1C2EB4B99B2DCA143470B5643319BEDA22CF
MD5 SHA1 SHA512 SSDEEP TLSH

Score

7^/10

discovery execution spyware stealer upx

Malware Config

Signatures

Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4208-0-0x0000000000900000-0x0000000000A50000-memory.dmp	upx
behavioral2/memory/4208-6-0x0000000000900000-0x0000000000A50000-memory.dmp	upx

Executes a command shell one-liner 1 TTPs 1 IoCs

Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

execution

Windows Command Shell

T1059.003

pid	Process
5068	cmd.exe

Reads the TCP/IP host and domain name from the registry 1 TTPs 2 IoCs

The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.

discovery

System Network Configuration Discovery

T1016

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Hostname	jaffacakes118_not-a-virus.HEUR.AdWare.Win32.BrainInst.heur.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Domain	jaffacakes118_not-a-virus.HEUR.AdWare.Win32.BrainInst.heur.exe

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	jaffacakes118_not-a-virus.HEUR.AdWare.Win32.BrainInst.heur.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 1 IoCs

description	pid	Process	procid_target
PID 4208 wrote to memory of 5068	4208	jaffacakes118_not-a-virus.HEUR.AdWare.Win32.BrainInst.heur.exe	89

C:\Users\Admin\AppData\Local\Temp\jaffacakes118_not-a-virus.HEUR.AdWare.Win32.BrainInst.heur.exe
"C:\Users\Admin\AppData\Local\Temp\jaffacakes118_not-a-virus.HEUR.AdWare.Win32.BrainInst.heur.exe"
1⤵
- Reads the TCP/IP host and domain name from the registry
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4208
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\546.bat
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  PID:5068

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

Windows Command Shell

T1059.003

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

System Network Configuration Discovery

T1016

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

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Downloads

546.bat

Path C:\Users\Admin\AppData\Local\Temp\546.bat
Size 175B
SHA256 7c1537e2eb4d4a2510eabb60c3c2d8eb504bf30877eba971cf9d6497d4ad08ee
MD5 966547573b3d87bb0b01ab04f7ece197
SHA1 fbc526df7e32a971b73aef34cb1e820812401873
SHA512 3e73df30c4b24a7bd6e1969c4902f2adadd3a09e75f554e7f76a3b322cebbdf4e37c2ff4cc3667861485decf88cb42f4270af94a931f3e475d6ac6c041fb8389
TLSH
T180C0122A538AC65B144C905706A1654DC0A4885D3F4E3F119772C848218180DB9C3741
MD5 SHA1 SHA512 TLSH

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memory/4208-0-0x0000000000900000-0x0000000000A50000-memory.dmp

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memory/4208-1-0x0000000000A4F000-0x0000000000A50000-memory.dmp

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memory/4208-6-0x0000000000900000-0x0000000000A50000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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Downloads