acfac8ee2e2e47c1427e64dbf61c69e77ddeff41ff9bbf312351aa09d0b026f0

Analysis

max time kernel
150s
max time network
129s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260911-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
24/09/2026, 23:39

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General

Target
jaffacakes118_acfac8ee2e2e47c1427e64dbf61c69e77ddeff41ff9bbf312351aa09d0b026f0.exe
Size 48KB
Sample260924-3nfcnsvcnc
SHA256 acfac8ee2e2e47c1427e64dbf61c69e77ddeff41ff9bbf312351aa09d0b026f0
MD5 02daefb2d29b8ed1a21eb4ac307470e6
SHA1 1fca992e45163bdc8c10b709ad6e7dbb39236fb4
SHA512 642901354695ebf3f654608465b4cbcedc5d32e4847683c372b159c278a9f016c21f8444cb995635e6decfa642a805a4a34e4967242d2d198deee68614aaae3a
SSDEEP 384:l9O79rvNgW/jM7BUX7ndtUO0QRLclCHpct5JSyG+EE:zwzNgWwVM+O0KclCHat50yGK
TLSH
T16D23289B9A204CB2C7DE047C31DD67221FBA5D342B22D8D2EBF364C69C25A878935917
MD5 SHA1 SHA512 SSDEEP TLSH

Score

8^/10

discovery execution persistence privilege_escalation

Malware Config

Signatures

Event Triggered Execution: AppInit DLLs 1 TTPs
Adversaries may establish persistence and/or elevate privileges by executing malicious content triggered by AppInit DLLs loaded into processes.
persistence privilege_escalation

AppInit DLLs
T1546.010

Executes dropped EXE 1 IoCs

pid	Process
5712	welyczk.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\welycz.dll	jaffacakes118_acfac8ee2e2e47c1427e64dbf61c69e77ddeff41ff9bbf312351aa09d0b026f0.exe
File created	C:\Windows\SysWOW64\welyczk.exe	jaffacakes118_acfac8ee2e2e47c1427e64dbf61c69e77ddeff41ff9bbf312351aa09d0b026f0.exe

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
2856	cmd.exe

System Location Discovery: System Language Discovery 1 TTPs 3 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_acfac8ee2e2e47c1427e64dbf61c69e77ddeff41ff9bbf312351aa09d0b026f0.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	welyczk.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 3500 wrote to memory of 5712	3500	jaffacakes118_acfac8ee2e2e47c1427e64dbf61c69e77ddeff41ff9bbf312351aa09d0b026f0.exe	90
PID 3500 wrote to memory of 2856	3500	jaffacakes118_acfac8ee2e2e47c1427e64dbf61c69e77ddeff41ff9bbf312351aa09d0b026f0.exe	92

C:\Users\Admin\AppData\Local\Temp\jaffacakes118_acfac8ee2e2e47c1427e64dbf61c69e77ddeff41ff9bbf312351aa09d0b026f0.exe
"C:\Users\Admin\AppData\Local\Temp\jaffacakes118_acfac8ee2e2e47c1427e64dbf61c69e77ddeff41ff9bbf312351aa09d0b026f0.exe"
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3500
- C:\Windows\SysWOW64\welyczk.exe
  C:\Windows\system32\welyczk.exe ˜‰
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:5712
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\jaffacakes118_acfac8ee2e2e47c1427e64dbf61c69e77ddeff41ff9bbf312351aa09d0b026f0.exe.bat
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  PID:2856

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

Windows Command Shell

T1059.003

Persistence

Event Triggered Execution

T1546

AppInit DLLs

T1546.010

Privilege Escalation

Event Triggered Execution

T1546

AppInit DLLs

T1546.010

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

jaffacakes118_acfac8ee2e2e47c1427e64dbf61c69e77ddeff41ff9bbf312351aa09d0b026f0.exe.bat

Path C:\Users\Admin\AppData\Local\Temp\jaffacakes118_acfac8ee2e2e47c1427e64dbf61c69e77ddeff41ff9bbf312351aa09d0b026f0.exe.bat
Size 274B
SHA256 d8cb23a99158449ce7c7b74439734d861f66c0f5f2e5e318c011f5787ed06ae0
MD5 a6c2011045392c0fcc7a7bde15e861ac
SHA1 258a2ba830a8facce1bf699962023230fc830a9f
SHA512 d205803a90b06e824e95a74cb187e7799f672afbd80ddb62e396c5cc569bb2f1322241faf9b88b68fded12e84bc517a06e1380a53f5d109ac0414129438dc9f4
TLSH
T198D02B83410A865D5885DC3FC275274E60389D1517C92F456A64D8FCA043C2CFFC32C4
MD5 SHA1 SHA512 TLSH

Submit Download

welyczk.exe

Path C:\Windows\SysWOW64\welyczk.exe
Size 48KB
SHA256 acfac8ee2e2e47c1427e64dbf61c69e77ddeff41ff9bbf312351aa09d0b026f0
MD5 02daefb2d29b8ed1a21eb4ac307470e6
SHA1 1fca992e45163bdc8c10b709ad6e7dbb39236fb4
SHA512 642901354695ebf3f654608465b4cbcedc5d32e4847683c372b159c278a9f016c21f8444cb995635e6decfa642a805a4a34e4967242d2d198deee68614aaae3a
SSDEEP 384:l9O79rvNgW/jM7BUX7ndtUO0QRLclCHpct5JSyG+EE:zwzNgWwVM+O0KclCHat50yGK
TLSH
T16D23289B9A204CB2C7DE047C31DD67221FBA5D342B22D8D2EBF364C69C25A878935917
MD5 SHA1 SHA512 SSDEEP TLSH