c804f4c59cc354e8a1b7fc43385baea9236d3ba688fa26f4537317ffc99a6c67

Analysis

max time kernel
150s
max time network
112s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260629-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260629-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
01/07/2026, 02:20

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General

Target
boykisser.exe
Size 4.0MB
Sample260701-csxjmscx2k
SHA256 c804f4c59cc354e8a1b7fc43385baea9236d3ba688fa26f4537317ffc99a6c67
MD5 25ab0045a52d8ee469da23c067b71934
SHA1 7807831c21405581c3b792d0866badba4c1a2a93
SHA512 7dcd4dd962dbe4b8eb596d36b9c744b1e244676c230a92a85068b5fbc11eee2106c27e065d522b62b2dac1f709a39b5f19f92bc16aaad19b75a5f88174f8281f
SSDEEP 98304:FrhrFFq5fxia8xcYqyc7tOL4Eyn76PrKCfP6BZNEEU6E6PLS:FdRFyfxia8xw7cUEy7UxP6BZNEEE6P+
TLSH
T18116334CCF719A3BFE7802B4C97265A155DA5A183DA6038F4A74EFC5DE5F0A218A0B07
MD5 SHA1 SHA512 SSDEEP TLSH

Score

9^/10

defense_evasion

Malware Config

Signatures

Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs

defense_evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	reg.exe

Looks for VirtualBox Guest Additions in registry 2 TTPs 1 IoCs

defense_evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\Oracle\VirtualBox Guest Additions	reg.exe

Kills process with taskkill 1 IoCs

defense_evasion

pid	Process
1200	taskkill.exe

Modifies registry key 1 TTPs 4 IoCs

Modify Registry

T1112

pid	Process
4276	reg.exe
2728	reg.exe
780	reg.exe
4408	reg.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1200	taskkill.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 796 wrote to memory of 1200	796	boykisser.exe	87
PID 796 wrote to memory of 4276	796	boykisser.exe	90
PID 796 wrote to memory of 2728	796	boykisser.exe	92
PID 796 wrote to memory of 780	796	boykisser.exe	94
PID 796 wrote to memory of 4408	796	boykisser.exe	96
PID 796 wrote to memory of 1944	796	boykisser.exe	98
PID 796 wrote to memory of 1492	796	boykisser.exe	100

C:\Users\Admin\AppData\Local\Temp\boykisser.exe
"C:\Users\Admin\AppData\Local\Temp\boykisser.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:796
- C:\Windows\system32\taskkill.exe
  "taskkill" /f /im javaw.exe
  2⤵
  - Kills process with taskkill
  - Suspicious use of AdjustPrivilegeToken
  PID:1200
- C:\Windows\system32\reg.exe
  "reg" query HKLM\SOFTWARE\VMware
  2⤵
  - Modifies registry key
  PID:4276
- C:\Windows\system32\reg.exe
  "reg" query HKLM\SOFTWARE\VirtualBox
  2⤵
  - Modifies registry key
  PID:2728
- C:\Windows\system32\reg.exe
  "reg" query HKLM\HARDWARE\ACPI\DSDT\VBOX__
  2⤵
  - Identifies VirtualBox via ACPI registry values (likely anti-VM)
  - Modifies registry key
  PID:780
- C:\Windows\system32\reg.exe
  "reg" query HKLM\HARDWARE\ACPI\DSDT\VMWARE__
  2⤵
  - Modifies registry key
  PID:4408
- C:\Windows\system32\reg.exe
  "reg" query "HKLM\SOFTWARE\Oracle\VirtualBox Guest Additions"
  2⤵
  - Looks for VirtualBox Guest Additions in registry
  PID:1944
- C:\Windows\system32\reg.exe
  "reg" query "HKLM\SOFTWARE\Microsoft\Virtual Machine\Guest"
  2⤵
  PID:1492

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Virtualization/Sandbox Evasion

T1497

Credential Access

Discovery

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/796-0-0x00007FF775290000-0x00007FF77581A000-memory.dmp

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memory/796-1-0x00007FF775290000-0x00007FF77581A000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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Downloads