637344293eb30ac44482b6cf7f3fd1704a0c9c22a1271999a7d57898b2dd4c8e

Analysis

max time kernel
150s
max time network
126s
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, 05:14

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General

Target
jaffacakes118_637344293eb30ac44482b6cf7f3fd1704a0c9c22a1271999a7d57898b2dd4c8e.exe
Size 48KB
Sample260924-fxar8ast2m
SHA256 637344293eb30ac44482b6cf7f3fd1704a0c9c22a1271999a7d57898b2dd4c8e
MD5 dde85e09bcc1f632f11e9d996329352c
SHA1 fb1de640d70c9a66cb85b75aacd5bc6325c0c991
SHA512 f784d60544235b015acedf21f1f43d1aa362f8f6a29db9ed0d280ef6d8b8e23510f3514efd3e6a9cc2353b2adde3b6bbd95c39878724cffa8ec5b6136588aa87
SSDEEP 384:RuoB9tC/Nsya+tvYSYuSnngnD8ESw3qRqwTydvKJqc3S:ooB/C/Ns/mYSYLngDf3qRJTydvKJqc
TLSH
T1E5235D4A544664F1C9ED493031D9A81B6BFE8E3836EC20DBDFB788887F2504B9598F07
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
4276	zesttnsk.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\zesttns.dll	jaffacakes118_637344293eb30ac44482b6cf7f3fd1704a0c9c22a1271999a7d57898b2dd4c8e.exe
File created	C:\Windows\SysWOW64\zesttnsk.exe	jaffacakes118_637344293eb30ac44482b6cf7f3fd1704a0c9c22a1271999a7d57898b2dd4c8e.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
2336	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_637344293eb30ac44482b6cf7f3fd1704a0c9c22a1271999a7d57898b2dd4c8e.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	zesttnsk.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1592	jaffacakes118_637344293eb30ac44482b6cf7f3fd1704a0c9c22a1271999a7d57898b2dd4c8e.exe
1592	jaffacakes118_637344293eb30ac44482b6cf7f3fd1704a0c9c22a1271999a7d57898b2dd4c8e.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 1592 wrote to memory of 4276	1592	jaffacakes118_637344293eb30ac44482b6cf7f3fd1704a0c9c22a1271999a7d57898b2dd4c8e.exe	89
PID 1592 wrote to memory of 2336	1592	jaffacakes118_637344293eb30ac44482b6cf7f3fd1704a0c9c22a1271999a7d57898b2dd4c8e.exe	90

C:\Users\Admin\AppData\Local\Temp\jaffacakes118_637344293eb30ac44482b6cf7f3fd1704a0c9c22a1271999a7d57898b2dd4c8e.exe
"C:\Users\Admin\AppData\Local\Temp\jaffacakes118_637344293eb30ac44482b6cf7f3fd1704a0c9c22a1271999a7d57898b2dd4c8e.exe"
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1592
- C:\Windows\SysWOW64\zesttnsk.exe
  C:\Windows\system32\zesttnsk.exe ˜‰
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:4276
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\jaffacakes118_637344293eb30ac44482b6cf7f3fd1704a0c9c22a1271999a7d57898b2dd4c8e.exe.bat
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  PID:2336

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_637344293eb30ac44482b6cf7f3fd1704a0c9c22a1271999a7d57898b2dd4c8e.exe.bat

Path C:\Users\Admin\AppData\Local\Temp\jaffacakes118_637344293eb30ac44482b6cf7f3fd1704a0c9c22a1271999a7d57898b2dd4c8e.exe.bat
Size 274B
SHA256 1f423eff608685067765665bf4a6512e0e8feecb09429365b25c291308139b51
MD5 d41e6c25085af100f13801befc868af2
SHA1 75bce5befbe75aa466fe08794dec5bba61148115
SHA512 6450e0edfe360827186e0460a699c82264ff464c5500f4f7f7913ab5aeb601ea3e610c1d10d193a21050339aea9d1eeb898c316390506044128158ec732fce9a
TLSH
T17AD02BD0A007474A1808CC2F01269F1C90D26DA96FC81F31136080C910A203C72D3E07
MD5 SHA1 SHA512 TLSH

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zesttnsk.exe

Path C:\Windows\SysWOW64\zesttnsk.exe
Size 48KB
SHA256 637344293eb30ac44482b6cf7f3fd1704a0c9c22a1271999a7d57898b2dd4c8e
MD5 dde85e09bcc1f632f11e9d996329352c
SHA1 fb1de640d70c9a66cb85b75aacd5bc6325c0c991
SHA512 f784d60544235b015acedf21f1f43d1aa362f8f6a29db9ed0d280ef6d8b8e23510f3514efd3e6a9cc2353b2adde3b6bbd95c39878724cffa8ec5b6136588aa87
SSDEEP 384:RuoB9tC/Nsya+tvYSYuSnngnD8ESw3qRqwTydvKJqc3S:ooB/C/Ns/mYSYLngDf3qRJTydvKJqc
TLSH
T1E5235D4A544664F1C9ED493031D9A81B6BFE8E3836EC20DBDFB788887F2504B9598F07
MD5 SHA1 SHA512 SSDEEP TLSH

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