182ed66336253400a72f1a11ba34c14951fe236a06d89dff16eb6d791627549d

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Overview

overview

Static

static

Duolingo E....2.exe

windows10-2004-x64

$PLUGINSDI...er.dll

windows10-2004-x64

$PLUGINSDI...ls.dll

windows10-2004-x64

$PLUGINSDI...em.dll

windows10-2004-x64

$PLUGINSDI...ll.dll

windows10-2004-x64

$PLUGINSDIR/app-32.7z

windows10-2004-x64

resources/...ve.dll

windows10-2004-x64

resources/elevate.exe

windows10-2004-x64

resources/...-0.dll

windows10-2004-x64

resources/...rp.dll

windows10-2004-x64

resources/...86.dll

windows10-2004-x64

resources/...re.dll

windows10-2004-x64

resources/...ic.dll

windows10-2004-x64

resources/...DME.md

windows10-2004-x64

resources/...er.exe

windows10-2004-x64

resources/...er.exe

windows10-2004-x64

resources/...er.pdb

windows10-2004-x64

resources/...g.json

windows10-2004-x64

resources/...xr.dll

windows10-2004-x64

resources/...cy.dll

windows10-2004-x64

resources/...re.dll

windows10-2004-x64

resources/...06.dll

windows10-2004-x64

resources/...01.dll

windows10-2004-x64

resources/...bi.dll

windows10-2004-x64

resources/...ib.dll

windows10-2004-x64

resources/...ug.dll

windows10-2004-x64

snapshot_blob.bin

windows10-2004-x64

v8_context...ot.bin

windows10-2004-x64

vk_swiftsh...d.json

windows10-2004-x64

$PLUGINSDI...ec.dll

windows10-2004-x64

$PLUGINSDI...7z.dll

windows10-2004-x64

$R0/Uninst...st.exe

windows10-2004-x64

Analysis

max time kernel
1716s
max time network
1172s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
28/04/2024, 18:39

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Static task

static1

1 signatures

Behavioral task

behavioral1

Sample

Duolingo English Test 3.11.2.exe

Resource

win10v2004-20240419-en

discovery

windows10-2004-x64

19 signatures

1800 seconds

Behavioral task

behavioral2

Sample

$PLUGINSDIR/SpiderBanner.dll

Resource

win10v2004-20240419-en

windows10-2004-x64

1 signatures

1800 seconds

Behavioral task

behavioral3

Sample

$PLUGINSDIR/StdUtils.dll

Resource

win10v2004-20240419-en

windows10-2004-x64

2 signatures

1800 seconds

Behavioral task

behavioral4

Sample

$PLUGINSDIR/System.dll

Resource

win10v2004-20240419-en

windows10-2004-x64

2 signatures

1800 seconds

Behavioral task

behavioral5

Sample

$PLUGINSDIR/WinShell.dll

Resource

win10v2004-20240419-en

windows10-2004-x64

2 signatures

1800 seconds

Behavioral task

behavioral6

Sample

$PLUGINSDIR/app-32.7z

Resource

win10v2004-20240419-en

windows10-2004-x64

3 signatures

1800 seconds

Behavioral task

behavioral7

Sample

resources/app.asar.unpacked/node_modules/@duolingo/det_native-win32-ia32/det_native.dll

Resource

win10v2004-20240426-en

windows10-2004-x64

2 signatures

1800 seconds

Behavioral task

behavioral8

Sample

resources/elevate.exe

Resource

win10v2004-20240419-en

windows10-2004-x64

0 signatures

1800 seconds

Behavioral task

behavioral9

Sample

resources/extra_resources/duolingo_english_test_helper/API-MS-Win-core-xstate-l2-1-0.dll

Resource

win10v2004-20240426-en

windows10-2004-x64

1 signatures

1800 seconds

Behavioral task

behavioral10

Sample

resources/extra_resources/duolingo_english_test_helper/Microsoft.CSharp.dll

Resource

win10v2004-20240426-en

windows10-2004-x64

1 signatures

1800 seconds

Behavioral task

behavioral11

Sample

resources/extra_resources/duolingo_english_test_helper/Microsoft.DiaSymReader.Native.x86.dll

Resource

win10v2004-20240426-en

windows10-2004-x64

0 signatures

1800 seconds

Behavioral task

behavioral12

Sample

resources/extra_resources/duolingo_english_test_helper/Microsoft.VisualBasic.Core.dll

Resource

win10v2004-20240426-en

windows10-2004-x64

1 signatures

1800 seconds

Behavioral task

behavioral13

Sample

resources/extra_resources/duolingo_english_test_helper/Microsoft.VisualBasic.dll

Resource

win10v2004-20240426-en

windows10-2004-x64

1 signatures

1800 seconds

Behavioral task

behavioral14

Sample

resources/extra_resources/duolingo_english_test_helper/SOS_README.md

Resource

win10v2004-20240419-en

windows10-2004-x64

3 signatures

1800 seconds

Behavioral task

behavioral15

Sample

resources/extra_resources/duolingo_english_test_helper/duolingo_english_test_helper.exe

Resource

win10v2004-20240426-en

windows10-2004-x64

0 signatures

1800 seconds

Behavioral task

behavioral16

Sample

resources/extra_resources/duolingo_english_test_helper/duolingo_english_test_helper.exe

Resource

win10v2004-20240419-en

windows10-2004-x64

2 signatures

1800 seconds

Behavioral task

behavioral17

Sample

resources/extra_resources/duolingo_english_test_helper/duolingo_english_test_helper.pdb

Resource

win10v2004-20240419-en

windows10-2004-x64

3 signatures

1800 seconds

Behavioral task

behavioral18

Sample

resources/extra_resources/duolingo_english_test_helper/duolingo_english_test_helper.runtimeconfig.json

Resource

win10v2004-20240426-en

windows10-2004-x64

3 signatures

1800 seconds

Behavioral task

behavioral19

Sample

resources/extra_resources/duolingo_english_test_helper/hostfxr.dll

Resource

win10v2004-20240426-en

windows10-2004-x64

2 signatures

1800 seconds

Behavioral task

behavioral20

Sample

resources/extra_resources/duolingo_english_test_helper/hostpolicy.dll

Resource

win10v2004-20240419-en

windows10-2004-x64

1 signatures

1800 seconds

Behavioral task

behavioral21

Sample

resources/extra_resources/duolingo_english_test_helper/mscordaccore.dll

Resource

win10v2004-20240426-en

windows10-2004-x64

2 signatures

1800 seconds

Behavioral task

behavioral22

Sample

resources/extra_resources/duolingo_english_test_helper/mscordaccore_x86_x86_4.700.21.31506.dll

Resource

win10v2004-20240426-en

windows10-2004-x64

2 signatures

1800 seconds

Behavioral task

behavioral23

Sample

resources/extra_resources/duolingo_english_test_helper/mscordaccore_x86_x86_4.700.22.11601.dll

Resource

win10v2004-20240419-en

windows10-2004-x64

2 signatures

1800 seconds

Behavioral task

behavioral24

Sample

resources/extra_resources/duolingo_english_test_helper/mscordbi.dll

Resource

win10v2004-20240419-en

windows10-2004-x64

1 signatures

1800 seconds

Behavioral task

behavioral25

Sample

resources/extra_resources/duolingo_english_test_helper/mscorlib.dll

Resource

win10v2004-20240426-en

windows10-2004-x64

0 signatures

1800 seconds

Behavioral task

behavioral26

Sample

resources/extra_resources/duolingo_english_test_helper/mscorrc.debug.dll

Resource

win10v2004-20240426-en

windows10-2004-x64

0 signatures

1800 seconds

Behavioral task

behavioral27

Sample

snapshot_blob.bin

Resource

win10v2004-20240226-en

windows10-2004-x64

3 signatures

1800 seconds

Behavioral task

behavioral28

Sample

v8_context_snapshot.bin

Resource

win10v2004-20240226-en

windows10-2004-x64

3 signatures

1800 seconds

Behavioral task

behavioral29

Sample

vk_swiftshader_icd.json

Resource

win10v2004-20240419-en

windows10-2004-x64

3 signatures

1800 seconds

Behavioral task

behavioral30

Sample

$PLUGINSDIR/nsExec.dll

Resource

win10v2004-20240419-en

windows10-2004-x64

2 signatures

1800 seconds

Behavioral task

behavioral31

Sample

$PLUGINSDIR/nsis7z.dll

Resource

win10v2004-20240419-en

windows10-2004-x64

2 signatures

1800 seconds

Behavioral task

behavioral32

Sample

$R0/Uninstall Duolingo English Test.exe

Resource

win10v2004-20240419-en

windows10-2004-x64

8 signatures

1800 seconds

Report Analysis Logs

General

Target

resources/extra_resources/duolingo_english_test_helper/hostfxr.dll
Size

460KB
MD5

e7195dceba254db4f405afefc24a9b3d
SHA1

a85fab0a14939b68c55b602bb17a77e23d83f86f
SHA256

7b37962672071a78eb2f6a17fefd7efaec813a806525beec8fbf6379507c91c2
SHA512

f31cc66d29d582bdc7111cd2b0e0fd0ae19d7836566b0118b3c0411d6e4972ee9177abd864a473c03b174ccf8d14febc9587f01de37bc20374acc7b3894bd04a
SSDEEP

12288:4/Xo28+cQ1YB+1Ktg6P4UHS2hKaI24LTYy0K:4/PKtV4UHSgK+4LTTN

Score

3^/10

Malware Config

Signatures

Program crash 1 IoCs

pid	pid_target	Process	procid_target
864	5032	WerFault.exe	84

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 556 wrote to memory of 5032	556	rundll32.exe	84
PID 556 wrote to memory of 5032	556	rundll32.exe	84
PID 556 wrote to memory of 5032	556	rundll32.exe	84

Processes

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\resources\extra_resources\duolingo_english_test_helper\hostfxr.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:556
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\resources\extra_resources\duolingo_english_test_helper\hostfxr.dll,#1
  2⤵
  PID:5032
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 5032 -s 620
    3⤵
    - Program crash
    PID:864

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 5032 -ip 5032
1⤵
PID:1908

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads