duptwux | 8c99fa8d6046d4e280525881e86f09dbab16de9289eb00dc294fbd6a217e2b5b

Analysis

max time kernel
148s
max time network
142s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260911-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
15/10/2026, 22:31

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General

Target
jaffacakes118_Worm.Win32.Juched.fja.exe
Size 280KB
Sample261015-2fdcnset6j
SHA256 8c99fa8d6046d4e280525881e86f09dbab16de9289eb00dc294fbd6a217e2b5b
MD5 f19536645565a6c2e60dbc46cbe6e88a
SHA1 1c58b8e00be42b73f2f5ab395804dc5d1305e55c
SHA512 5b973d232effbb0eb3c18ed9a530688f36cb428405087bd3ef0ad45bbc9671f91179d03df3ca208cbfd6450e28cc0e6536cf5f983b7a011242203bc32f9f9b28
SSDEEP 1536:fwQBHvoYUWjzlZLX0T0mSBAgaIetc8DdXoaQ1:fBlvaWjzrLX0gmSBAVIetfXoaW
TLSH
T121543B31F201C07BF4D141BEC2DA8B76B5AC5F311B4420E7D3D0B9AD663A6E9B93158A
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

discovery duptwux worm

Malware Config

Signatures

Family: Duptwux
Duptwux is a Windows worm written in C++.
worm duptwux

Detects Duptwux 5 IoCs

resource	yara_rule
behavioral2/memory/5112-0-0x0000000000400000-0x0000000000458000-memory.dmp	family_duptwux
behavioral2/files/0x00030000000170ef-6.dat	family_duptwux
behavioral2/memory/5052-11-0x0000000000400000-0x0000000000458000-memory.dmp	family_duptwux
behavioral2/memory/5112-13-0x0000000000400000-0x0000000000458000-memory.dmp	family_duptwux
behavioral2/memory/5052-15-0x0000000000400000-0x0000000000458000-memory.dmp	family_duptwux

Executes dropped EXE 1 IoCs

pid	Process
5052	jusched.exe

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\b1b3c6f2\jusched.exe	jaffacakes118_Worm.Win32.Juched.fja.exe
File created	C:\Program Files (x86)\b1b3c6f2\b1b3c6f2	jaffacakes118_Worm.Win32.Juched.fja.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\Tasks\2tdU3eap.job	jaffacakes118_Worm.Win32.Juched.fja.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Program crash 2 IoCs

pid	pid_target	Process	procid_target
1200	5112	WerFault.exe	87
2508	5112	WerFault.exe	87

Reads the TCP/IP host and domain name from the registry 1 TTPs 2 IoCs

The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.

discovery

System Network Configuration Discovery

T1016

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Hostname	jusched.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Domain	jusched.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	jaffacakes118_Worm.Win32.Juched.fja.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	jusched.exe

Suspicious use of WriteProcessMemory 1 IoCs

description	pid	Process	procid_target
PID 5112 wrote to memory of 5052	5112	jaffacakes118_Worm.Win32.Juched.fja.exe	88

C:\Users\Admin\AppData\Local\Temp\jaffacakes118_Worm.Win32.Juched.fja.exe
"C:\Users\Admin\AppData\Local\Temp\jaffacakes118_Worm.Win32.Juched.fja.exe"
1⤵
- Drops file in Program Files directory
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5112
- C:\Program Files (x86)\b1b3c6f2\jusched.exe
  "C:\Program Files (x86)\b1b3c6f2\jusched.exe"
  2⤵
  - Executes dropped EXE
  - Reads the TCP/IP host and domain name from the registry
  - System Location Discovery: System Language Discovery
  PID:5052
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5112 -s 824
  2⤵
  - Program crash
  PID:1200
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5112 -s 824
  2⤵
  - Program crash
  PID:2508

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 5112 -ip 5112
1⤵
PID:3184

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 612 -p 5112 -ip 5112
1⤵
PID:2428

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

System Network Configuration Discovery

T1016

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

b1b3c6f2

Path C:\Program Files (x86)\b1b3c6f2\b1b3c6f2
Size 17B
SHA256 3506e286f6223ccaf1665d4e457b712abeb527266ff28327ce60e37b9fbeb404
MD5 2130fee70fc3f7c10d5279f96f98ad1e
SHA1 4307cef89171fa230048ea22546802198d888780
SHA512 67fa1bb31028ff3ba125f184207499b9205f58c9eef2ac948f5824475515c396b3d5f93e207cb96deffe1aedb286b1f935cc689c5d84449e51c517da1cffe2e5
MD5 SHA1 SHA512

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jusched.exe

Path C:\Program Files (x86)\b1b3c6f2\jusched.exe
Size 280KB
SHA256 6777704ccfce5b75297770fa4a56469dfc3f8e4f1f359db42494f8707a6a4bbd
MD5 34aff61341f5419bb523df881cf48fe2
SHA1 72d812a1c4e2b496223cff42d465e537a53361de
SHA512 d642ef390d96c3909208134b95ba254c23528df4d3a04763b390350d45ab74fc93b3a2ecf75d10f01ffad171caad26015787765ab87f22fb87353a15110a4e7a
SSDEEP 1536:fwQBHvoYUWjzlZLX0T0mSBAgaIetc8DdXoAQ9:fBlvaWjzrLX0gmSBAVIetfXoA6
TLSH
T1A2543B31F201C07BF4D141BEC2DA8B76B5AC5F311B0420E7D3D0B9AD663A6E9B93158A
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/5052-11-0x0000000000400000-0x0000000000458000-memory.dmp

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memory/5052-15-0x0000000000400000-0x0000000000458000-memory.dmp

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memory/5112-0-0x0000000000400000-0x0000000000458000-memory.dmp

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memory/5112-13-0x0000000000400000-0x0000000000458000-memory.dmp

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Analysis

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General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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Downloads