duptwux | 49271352e40f41eb21105da066a371c77b2492370401054c69edd33683f8b5f8

Analysis

max time kernel
149s
max time network
137s
platform
windows10-2004_x64
resource
win10v2004-20260911-en
resource tags

arch:x64arch:x86image:win10v2004-20260911-enlocale:en-usos:windows10-2004-x64systemwindows
submitted
18/10/2026, 16:00

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General

Target
jaffacakes118_Worm.Win32.Juched.fkf.exe
Size 316KB
Sample261018-tf3cssgs2s
SHA256 49271352e40f41eb21105da066a371c77b2492370401054c69edd33683f8b5f8
MD5 b3df2862e57c392ca494500f6f745078
SHA1 4bd47cfc8cfa08854897eedae65757ffbe584fb2
SHA512 65f1be6746de836f25b25e938d7851eeae6e1bd5eaf361c55820562ce3809bfc12d66db4235bc873c7dbb65463d43879678afa64ea2096d7e2abbd2bf28140bf
SSDEEP 3072:wVHgCc4xGvbwcU9KQ2BBAHmaPxiVohb5EBgY3+W:NCc4xGxWKQ2Bonxaf+W
TLSH
T19F646C21E301C02BE8D140FED6A78B79B5AC6F301B5820D793E07AE9673A1E5BD3155B
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
behavioral1/memory/3476-0-0x0000000000400000-0x000000000045F000-memory.dmp	family_duptwux
behavioral1/files/0x00070000000243b7-6.dat	family_duptwux
behavioral1/memory/4656-13-0x0000000000400000-0x000000000045F000-memory.dmp	family_duptwux
behavioral1/memory/3476-15-0x0000000000400000-0x000000000045F000-memory.dmp	family_duptwux
behavioral1/memory/4656-17-0x0000000000400000-0x000000000045F000-memory.dmp	family_duptwux

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-939655444-3071939294-1401108526-1000\Control Panel\International\Geo\Nation	jaffacakes118_Worm.Win32.Juched.fkf.exe

Executes dropped EXE 1 IoCs

pid	Process
4656	jusched.exe

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\a277571\jusched.exe	jaffacakes118_Worm.Win32.Juched.fkf.exe
File created	C:\Program Files (x86)\a277571\a277571	jaffacakes118_Worm.Win32.Juched.fkf.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\Tasks\Update23.job	jaffacakes118_Worm.Win32.Juched.fkf.exe

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

System Information Discovery
T1082

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.fkf.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	jusched.exe

Suspicious use of WriteProcessMemory 1 IoCs

description	pid	Process	procid_target
PID 3476 wrote to memory of 4656	3476	jaffacakes118_Worm.Win32.Juched.fkf.exe	90

C:\Users\Admin\AppData\Local\Temp\jaffacakes118_Worm.Win32.Juched.fkf.exe
"C:\Users\Admin\AppData\Local\Temp\jaffacakes118_Worm.Win32.Juched.fkf.exe"
1⤵
- Checks computer location settings
- Drops file in Program Files directory
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3476
- C:\Program Files (x86)\a277571\jusched.exe
  "C:\Program Files (x86)\a277571\jusched.exe"
  2⤵
  - Executes dropped EXE
  - Reads the TCP/IP host and domain name from the registry
  - System Location Discovery: System Language Discovery
  PID:4656

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

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

a277571

Path C:\Program Files (x86)\a277571\a277571
Size 17B
SHA256 54f9150d1268f7b4b83dd9fc3ec32274bf749715a5806ff3ca5262f5427d6781
MD5 134c1d489094d6d3399f65b0e9aebc1f
SHA1 612a57fbe6ed3ab9c15b39451171d813314a28d5
SHA512 b09bf60e4850d05261d81a124a647dd111f42480224eae8a3bd2f64736c38119953703f868ad34194a7ae6dad6aabff4081ba73df262bbe9f5327867c56a48ed
MD5 SHA1 SHA512

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jusched.exe

Path C:\Program Files (x86)\a277571\jusched.exe
Size 316KB
SHA256 cce4788117702c9519cda9cefab9ee0a9649cb82ef17f10e18b3486d387e7130
MD5 956c6c806a628561e43727aef9aca0a6
SHA1 3a6f8e737590cc869d1618c29ef00dc3b55c9eaf
SHA512 8d24810d232c9cb9e85c76f68bc8574aad4c488735bdc40e2c4f36d525d31b7935c6f7d5d2f02f0bcab46869c90c2d9eb8c5095fbdc93411d617207b29d94e7a
SSDEEP 3072:IVHgCc4xGvbwcU9KQ2BBAHmaPxvVo5b5EWgY3+D:VCc4xGxWKQ2BonxOf+D
TLSH
T19C646C21E701C02BE8D140FED6A78B79B5AC6F301B5820D793E03AE9673A1E5BD3155B
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/3476-0-0x0000000000400000-0x000000000045F000-memory.dmp

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memory/3476-15-0x0000000000400000-0x000000000045F000-memory.dmp

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memory/4656-13-0x0000000000400000-0x000000000045F000-memory.dmp

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memory/4656-17-0x0000000000400000-0x000000000045F000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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Downloads