a80e21cec31c92c88b9758b6a45e28823ec55c82ad68c97a66e3c8f430ceed13

Analysis

max time kernel
148s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
31/07/2026, 12:23

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General

Target
fs.exe
Size 778KB
Sample260731-pkt5rssfpg
SHA256 a80e21cec31c92c88b9758b6a45e28823ec55c82ad68c97a66e3c8f430ceed13
MD5 9f5743002a86c5ac2cca20b5a7bb4071
SHA1 57ce051987123db2405b1fadda9e97a7c245bb45
SHA512 f97464d5d3eebe94cbce81019c9c1c981cd351d51134162777558b200174f4c29d4250884725e1652aded1bd2dd60900b1006e6cc12a473878d5d47782a2a15e
SSDEEP 12288:AYJ6wOXaPivkgc3QH7/r4fxK4dJNYzu34DuniHE4AemaecF3imgw4vTtGOu65:H6hi/gIQb/0f44dJNah+ik4Aemnw4J
TLSH
T1A0052359EDB1318EC76CA23B48577DAF5FF82884271D53412F52880EEB8D86A53E017B
MD5 SHA1 SHA512 SSDEEP TLSH

Score

5^/10

discovery upx

Malware Config

Signatures

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3872 set thread context of 3296	3872	fs.exe	88

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3872-0-0x0000000000400000-0x00000000005ED000-memory.dmp	upx
behavioral2/memory/3872-11-0x0000000000400000-0x00000000005ED000-memory.dmp	upx

System Location Discovery: System Language Discovery 1 TTPs 1 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	fs.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 3872 wrote to memory of 3296	3872	fs.exe	88
PID 3872 wrote to memory of 3296	3872	fs.exe	88
PID 3872 wrote to memory of 3296	3872	fs.exe	88
PID 3872 wrote to memory of 3296	3872	fs.exe	88
PID 3872 wrote to memory of 3296	3872	fs.exe	88
PID 3872 wrote to memory of 3296	3872	fs.exe	88
PID 3872 wrote to memory of 3296	3872	fs.exe	88
PID 3872 wrote to memory of 3296	3872	fs.exe	88

C:\Users\Admin\AppData\Local\Temp\fs.exe
"C:\Users\Admin\AppData\Local\Temp\fs.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3872
- C:\Users\Admin\AppData\Local\Temp\fs.exe
  C:\Users\Admin\AppData\Local\Temp\fs.exe
  2⤵
  PID:3296

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/3296-2-0x0000000000400000-0x0000000000467000-memory.dmp

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memory/3296-9-0x0000000000400000-0x0000000000467000-memory.dmp

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memory/3296-6-0x0000000000400000-0x0000000000467000-memory.dmp

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memory/3296-7-0x0000000000400000-0x0000000000467000-memory.dmp

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memory/3296-4-0x0000000000400000-0x0000000000467000-memory.dmp

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memory/3296-1-0x0000000000400000-0x0000000000467000-memory.dmp

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memory/3872-0-0x0000000000400000-0x00000000005ED000-memory.dmp

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memory/3872-11-0x0000000000400000-0x00000000005ED000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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Downloads