64cb6993ea28946f3a5d6d39ad0c31bcd87368ab1e029e56b55ebad16240b505

Analysis

max time kernel
148s
max time network
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
04/08/2026, 15:18

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General

Target
64cb6993ea28946f3a5d6d39ad0c31bcd87368ab1e029e56b55ebad16240b505.exe
Size 88KB
Sample260804-splkzahl2v
SHA256 64cb6993ea28946f3a5d6d39ad0c31bcd87368ab1e029e56b55ebad16240b505
MD5 2de7159abbd4cf5cdea284c00a4824ed
SHA1 310c162626261c44a77ff1569571acc367de3468
SHA512 0ee4a234ff625956dca213d2b1d3b7843a9659967c06def67b45fa4742105a3be2efbe6346a6dbcd4c1f1876e44170e34c357a503faf657495bcf6f92a276489
SSDEEP 1536:2+gisi/OTW1bk3FwErVvHcT3BignpwLsO9NXw6dcz:2IZ1bk1FVvHcTBO4O9fcz
TLSH
T1FE936D0594129237E46344F5A6BA4EBDA17C5BE133822DDBC389FC294B35CE279B106F
MD5 SHA1 SHA512 SSDEEP TLSH

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
2480	bot1.exe
1236	bot1.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1452 set thread context of 5564	1452	64cb6993ea28946f3a5d6d39ad0c31bcd87368ab1e029e56b55ebad16240b505.exe	90
PID 2480 set thread context of 1236	2480	bot1.exe	91

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/memory/5564-10-0x0000000000400000-0x0000000000423000-memory.dmp	upx
behavioral2/memory/5564-16-0x0000000000400000-0x0000000000423000-memory.dmp	upx
behavioral2/memory/5564-11-0x0000000000400000-0x0000000000423000-memory.dmp	upx

Drops file in Windows directory 3 IoCs

description	ioc	Process
File created	C:\Windows\system\bot1.exe	64cb6993ea28946f3a5d6d39ad0c31bcd87368ab1e029e56b55ebad16240b505.exe
File opened for modification	C:\Windows\system\bot1.exe	64cb6993ea28946f3a5d6d39ad0c31bcd87368ab1e029e56b55ebad16240b505.exe
File opened for modification	C:\Windows\system\RCX99B.tmp	64cb6993ea28946f3a5d6d39ad0c31bcd87368ab1e029e56b55ebad16240b505.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	64cb6993ea28946f3a5d6d39ad0c31bcd87368ab1e029e56b55ebad16240b505.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	bot1.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 1452 wrote to memory of 2480	1452	64cb6993ea28946f3a5d6d39ad0c31bcd87368ab1e029e56b55ebad16240b505.exe	89
PID 1452 wrote to memory of 5564	1452	64cb6993ea28946f3a5d6d39ad0c31bcd87368ab1e029e56b55ebad16240b505.exe	90
PID 1452 wrote to memory of 5564	1452	64cb6993ea28946f3a5d6d39ad0c31bcd87368ab1e029e56b55ebad16240b505.exe	90
PID 1452 wrote to memory of 5564	1452	64cb6993ea28946f3a5d6d39ad0c31bcd87368ab1e029e56b55ebad16240b505.exe	90
PID 1452 wrote to memory of 5564	1452	64cb6993ea28946f3a5d6d39ad0c31bcd87368ab1e029e56b55ebad16240b505.exe	90
PID 2480 wrote to memory of 1236	2480	bot1.exe	91
PID 2480 wrote to memory of 1236	2480	bot1.exe	91
PID 2480 wrote to memory of 1236	2480	bot1.exe	91
PID 2480 wrote to memory of 1236	2480	bot1.exe	91

C:\Users\Admin\AppData\Local\Temp\64cb6993ea28946f3a5d6d39ad0c31bcd87368ab1e029e56b55ebad16240b505.exe
"C:\Users\Admin\AppData\Local\Temp\64cb6993ea28946f3a5d6d39ad0c31bcd87368ab1e029e56b55ebad16240b505.exe"
1⤵
- Suspicious use of SetThreadContext
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1452
- C:\Windows\system\bot1.exe
  "C:\Windows\system\bot1.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2480
- - C:\Windows\system\bot1.exe
    C:\Windows\system\bot1.exe
    3⤵
    - Executes dropped EXE
    PID:1236
- C:\Users\Admin\AppData\Local\Temp\64cb6993ea28946f3a5d6d39ad0c31bcd87368ab1e029e56b55ebad16240b505.exe
  "C:\Users\Admin\AppData\Local\Temp\64cb6993ea28946f3a5d6d39ad0c31bcd87368ab1e029e56b55ebad16240b505.exe" -cure -offset=90112 -rcline="C:\Users\Admin\AppData\Local\Temp\64cb6993ea28946f3a5d6d39ad0c31bcd87368ab1e029e56b55ebad16240b505.exe"
  2⤵
  PID:5564

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

bot1.exe

Path C:\Windows\System\bot1.exe
Size 88KB
SHA256 64cb6993ea28946f3a5d6d39ad0c31bcd87368ab1e029e56b55ebad16240b505
MD5 2de7159abbd4cf5cdea284c00a4824ed
SHA1 310c162626261c44a77ff1569571acc367de3468
SHA512 0ee4a234ff625956dca213d2b1d3b7843a9659967c06def67b45fa4742105a3be2efbe6346a6dbcd4c1f1876e44170e34c357a503faf657495bcf6f92a276489
SSDEEP 1536:2+gisi/OTW1bk3FwErVvHcT3BignpwLsO9NXw6dcz:2IZ1bk1FVvHcTBO4O9fcz
TLSH
T1FE936D0594129237E46344F5A6BA4EBDA17C5BE133822DDBC389FC294B35CE279B106F
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/1452-0-0x0000000000400000-0x0000000000418000-memory.dmp

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memory/1452-18-0x0000000000400000-0x0000000000418000-memory.dmp

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memory/5564-10-0x0000000000400000-0x0000000000423000-memory.dmp

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memory/5564-16-0x0000000000400000-0x0000000000423000-memory.dmp

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memory/5564-11-0x0000000000400000-0x0000000000423000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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Downloads