955387b03bed86e24be8f4940780114dfff1fe4f43050111b59f9d11e470790d

General

Target

更新文件工具3.exe
Size

1.6MB
MD5

6399ce4642cdd36c01e99fefe8adc0cc
SHA1

01f35bd2853a0b74faac167f83644a54a7c690d2
SHA256

955387b03bed86e24be8f4940780114dfff1fe4f43050111b59f9d11e470790d
SHA512

beb0f8f0d8496ae5e30c3e40ea161cfee8108a269b9bf83b9cc8e7d5797679bf98b1420a6e05d7794275c1dd4d066d6e5f50a92085f5c76f7c202f699292a399
SSDEEP

12288:GLMxhyxv664BtysdhIl4t4plpgUqdR5nWFpPoSRMGgVKMnnp+Myg:GajBUsdhk4iplCUqAbUGgZnnpXyg

Score

7^/10

aspackv2 upx

Malware Config

Signatures

ASPack v2.12-2.42 2 IoCs

Detects executables packed with ASPack v2.12-2.42

aspackv2

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\yEjxOr.exe	aspack_v212_v242
C:\Users\Admin\AppData\Local\Temp\yEjxOr.exe	aspack_v212_v242

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

Processes:

yEjxOr.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-4238149048-355649189-894321705-1000\Control Panel\International\Geo\Nation yEjxOr.exe
Executes dropped EXE 1 IoCs

Processes:

yEjxOr.exe

pid process

1516 yEjxOr.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-4238149048-355649189-894321705-1000\Control Panel\International\Geo\Nation	yEjxOr.exe

pid	process
1516	yEjxOr.exe

UPX packed file 25 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

Processes:

resource	yara_rule
behavioral2/memory/4412-140-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral2/memory/4412-142-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral2/memory/4412-141-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral2/memory/4412-144-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral2/memory/4412-146-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral2/memory/4412-148-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral2/memory/4412-150-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral2/memory/4412-152-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral2/memory/4412-154-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral2/memory/4412-156-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral2/memory/4412-158-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral2/memory/4412-160-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral2/memory/4412-162-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral2/memory/4412-164-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral2/memory/4412-166-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral2/memory/4412-171-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral2/memory/4412-175-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral2/memory/4412-177-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral2/memory/4412-180-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral2/memory/4412-183-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral2/memory/4412-185-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral2/memory/4412-187-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral2/memory/4412-189-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral2/memory/4412-197-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral2/memory/4412-226-0x0000000010000000-0x000000001003E000-memory.dmp	upx

Drops file in Program Files directory 64 IoCs

Processes:

yEjxOr.exe

description	ioc	process
File opened for modification	C:\Program Files\VideoLAN\VLC\vlc-cache-gen.exe	yEjxOr.exe
File opened for modification	C:\Program Files\Windows Security\BrowserCore\BrowserCore.exe	yEjxOr.exe
File opened for modification	C:\Program Files\7-Zip\7zG.exe	yEjxOr.exe
File opened for modification	C:\Program Files\Java\jdk1.8.0_66\bin\extcheck.exe	yEjxOr.exe
File opened for modification	C:\Program Files\Java\jdk1.8.0_66\bin\javaw.exe	yEjxOr.exe
File opened for modification	C:\Program Files\Java\jdk1.8.0_66\bin\javaws.exe	yEjxOr.exe
File opened for modification	C:\Program Files\Java\jdk1.8.0_66\bin\jrunscript.exe	yEjxOr.exe
File opened for modification	C:\Program Files\Java\jdk1.8.0_66\jre\bin\kinit.exe	yEjxOr.exe
File opened for modification	C:\Program Files\Mozilla Firefox\plugin-container.exe	yEjxOr.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.SkypeApp_14.53.77.0_x64__kzf8qxf38zg5c\SkypeBridge\SkypeBridge.exe	yEjxOr.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\excelcnv.exe	yEjxOr.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\MSOUC.EXE	yEjxOr.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.BingWeather_4.25.20211.0_x64__8wekyb3d8bbwe\Microsoft.Msn.Weather.exe	yEjxOr.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroRd32.exe	yEjxOr.exe
File opened for modification	C:\Program Files\Java\jdk1.8.0_66\jre\bin\tnameserv.exe	yEjxOr.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.MicrosoftSolitaireCollection_4.4.8204.0_x64__8wekyb3d8bbwe\Solitaire.exe	yEjxOr.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.XboxIdentityProvider_12.50.6001.0_x64__8wekyb3d8bbwe\XboxIdp.exe	yEjxOr.exe
File opened for modification	C:\Program Files (x86)\Google\Update\DisabledGoogleUpdate.exe	yEjxOr.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.XboxGameOverlay_1.46.11001.0_x64__8wekyb3d8bbwe\GameBar.exe	yEjxOr.exe
File opened for modification	C:\Program Files (x86)\Google\Update\1.3.36.151\GoogleUpdate.exe	yEjxOr.exe
File opened for modification	C:\Program Files\7-Zip\7zFM.exe	yEjxOr.exe
File opened for modification	C:\Program Files\Java\jdk1.8.0_66\jre\bin\keytool.exe	yEjxOr.exe
File opened for modification	C:\Program Files\Mozilla Firefox\maintenanceservice_installer.exe	yEjxOr.exe
File opened for modification	C:\Program Files\VideoLAN\VLC\vlc.exe	yEjxOr.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.549981C3F5F10_1.1911.21713.0_x64__8wekyb3d8bbwe\Win32Bridge.Server.exe	yEjxOr.exe
File opened for modification	C:\Program Files\Java\jdk1.8.0_66\bin\jabswitch.exe	yEjxOr.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Client\AppVDllSurrogate32.exe	yEjxOr.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.DesktopAppInstaller_1.0.30251.0_x64__8wekyb3d8bbwe\AppInstallerElevatedAppServiceClient.exe	yEjxOr.exe
File opened for modification	C:\Program Files\Java\jdk1.8.0_66\jre\bin\java.exe	yEjxOr.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\msoev.exe	yEjxOr.exe
File opened for modification	C:\Program Files\Google\Chrome\Application\chrome.exe	yEjxOr.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\SDXHelper.exe	yEjxOr.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\SETLANG.EXE	yEjxOr.exe
File opened for modification	C:\Program Files (x86)\Google\Update\1.3.36.151\GoogleUpdateOnDemand.exe	yEjxOr.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\ORGCHART.EXE	yEjxOr.exe
File opened for modification	C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Office\Office16\DCF\filecompare.exe	yEjxOr.exe
File opened for modification	C:\Program Files\Mozilla Firefox\firefox.exe	yEjxOr.exe
File opened for modification	C:\Program Files\Java\jre1.8.0_66\bin\unpack200.exe	yEjxOr.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\CLVIEW.EXE	yEjxOr.exe
File opened for modification	C:\Program Files\Mozilla Firefox\maintenanceservice.exe	yEjxOr.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\Browser\WCChromeExtn\WCChromeNativeMessagingHost.exe	yEjxOr.exe
File opened for modification	C:\Program Files\Java\jdk1.8.0_66\bin\javapackager.exe	yEjxOr.exe
File opened for modification	C:\Program Files\Java\jdk1.8.0_66\bin\orbd.exe	yEjxOr.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.Office.OneNote_16001.12026.20112.0_x64__8wekyb3d8bbwe\onenoteshare.exe	yEjxOr.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.WindowsAlarms_10.1906.2182.0_x64__8wekyb3d8bbwe\Time.exe	yEjxOr.exe
File opened for modification	C:\Program Files\Java\jdk1.8.0_66\bin\jdeps.exe	yEjxOr.exe
File opened for modification	C:\Program Files\Java\jdk1.8.0_66\bin\rmic.exe	yEjxOr.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\ADelRCP.exe	yEjxOr.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\Eula.exe	yEjxOr.exe
File opened for modification	C:\Program Files (x86)\Google\Update\Download\{8A69D345-D564-463C-AFF1-A69D9E530F96}\106.0.5249.119\chrome_installer.exe	yEjxOr.exe
File opened for modification	C:\Program Files\Java\jdk1.8.0_66\bin\idlj.exe	yEjxOr.exe
File opened for modification	C:\Program Files\Java\jdk1.8.0_66\jre\bin\servertool.exe	yEjxOr.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\misc.exe	yEjxOr.exe
File opened for modification	C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\HxAccounts.exe	yEjxOr.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroLayoutRecognizer\AcroLayoutRecognizer.exe	yEjxOr.exe
File opened for modification	C:\Program Files\Java\jdk1.8.0_66\jre\bin\policytool.exe	yEjxOr.exe
File opened for modification	C:\Program Files\Java\jdk1.8.0_66\jre\bin\rmiregistry.exe	yEjxOr.exe
File opened for modification	C:\Program Files\7-Zip\7z.exe	yEjxOr.exe
File opened for modification	C:\Program Files\Java\jre1.8.0_66\bin\tnameserv.exe	yEjxOr.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Client\AppVLP.exe	yEjxOr.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\msoadfsb.exe	yEjxOr.exe
File opened for modification	C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Office\Office16\MSOHTMED.EXE	yEjxOr.exe
File opened for modification	C:\Program Files\Mozilla Firefox\default-browser-agent.exe	yEjxOr.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.WindowsCalculator_10.1906.55.0_x64__8wekyb3d8bbwe\Calculator.exe	yEjxOr.exe

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

System Information Discovery
T1082
Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

更新文件工具3.exe

pid process

4412 更新文件工具3.exe
4412 更新文件工具3.exe
4412 更新文件工具3.exe

pid	process
4412	更新文件工具3.exe
4412	更新文件工具3.exe
4412	更新文件工具3.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

更新文件工具3.exeyEjxOr.exe

description	pid	process	target process
PID 4412 wrote to memory of 1516	4412	更新文件工具3.exe	yEjxOr.exe
PID 4412 wrote to memory of 1516	4412	更新文件工具3.exe	yEjxOr.exe
PID 4412 wrote to memory of 1516	4412	更新文件工具3.exe	yEjxOr.exe
PID 1516 wrote to memory of 2404	1516	yEjxOr.exe	cmd.exe
PID 1516 wrote to memory of 2404	1516	yEjxOr.exe	cmd.exe
PID 1516 wrote to memory of 2404	1516	yEjxOr.exe	cmd.exe

C:\Users\Admin\AppData\Local\Temp\更新文件工具3.exe
"C:\Users\Admin\AppData\Local\Temp\更新文件工具3.exe"
1⤵
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4412

C:\Users\Admin\AppData\Local\Temp\yEjxOr.exe
C:\Users\Admin\AppData\Local\Temp\yEjxOr.exe
2⤵
- Checks computer location settings
- Executes dropped EXE
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:1516

C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\28467a4c.bat" "
3⤵
PID:2404

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\28467a4c.bat
Filesize
187B

MD5
b169a40ded231a778435d944656605f4

SHA1
445a50aef44f1159e508cb4a407fcd41ccc6fc2e

SHA256
abe40397b8e34ee0a56b4f1cc3ed195c4c08f46a828c890cb5c8cb303d8b66b2

SHA512
632c8be07ce69c11998030fa813036f7de3db535366a4438ff01c567899351b1134e79fd849c2c074940e9fd7a43c345cc9c0f944fad14e600b0c9d60e493675

Download Submit
C:\Users\Admin\AppData\Local\Temp\437B72DE.exe
Filesize
4B

MD5
d3b07384d113edec49eaa6238ad5ff00

SHA1
f1d2d2f924e986ac86fdf7b36c94bcdf32beec15

SHA256
b5bb9d8014a0f9b1d61e21e796d78dccdf1352f23cd32812f4850b878ae4944c

SHA512
0cf9180a764aba863a67b6d72f0918bc131c6772642cb2dce5a34f0a702f9470ddc2bf125c12198b1995c233c34b4afd346c54a2334c350a948a51b6e8b4e6b6

Download Submit
C:\Users\Admin\AppData\Local\Temp\437B72DE.exe
Filesize
4B

MD5
20879c987e2f9a916e578386d499f629

SHA1
c7b33ddcc42361fdb847036fc07e880b81935d5d

SHA256
9f2981a7cc4d40a2a409dc895de64253acd819d7c0011c8e80b86fe899464e31

SHA512
bcdde1625364dd6dd143b45bdcec8d59cf8982aff33790d390b839f3869e0e815684568b14b555a596d616252aeeaa98dac2e6e551c9095ea11a575ff25ff84f

Download Submit
C:\Users\Admin\AppData\Local\Temp\yEjxOr.exe
Filesize
15KB

MD5
56b2c3810dba2e939a8bb9fa36d3cf96

SHA1
99ee31cd4b0d6a4b62779da36e0eeecdd80589fc

SHA256
4354970ccc7cd6bb16318f132c34f6a1b3d5c2ea7ff53e1c9271905527f2db07

SHA512
27812a9a034d7bd2ca73b337ae9e0b6dc79c38cfd1a2c6ac9d125d3cc8fa563c401a40d22155811d5054e5baa8cf8c8e7e03925f25fa856a9ba9dea708d15b4e

Download Submit
C:\Users\Admin\AppData\Local\Temp\yEjxOr.exe
Filesize
15KB

MD5
56b2c3810dba2e939a8bb9fa36d3cf96

SHA1
99ee31cd4b0d6a4b62779da36e0eeecdd80589fc

SHA256
4354970ccc7cd6bb16318f132c34f6a1b3d5c2ea7ff53e1c9271905527f2db07

SHA512
27812a9a034d7bd2ca73b337ae9e0b6dc79c38cfd1a2c6ac9d125d3cc8fa563c401a40d22155811d5054e5baa8cf8c8e7e03925f25fa856a9ba9dea708d15b4e

Download Submit
memory/1516-139-0x00000000004A0000-0x00000000004A9000-memory.dmp

Filesize
36KB

Download
memory/1516-224-0x00000000004A0000-0x00000000004A9000-memory.dmp

Filesize
36KB

Download
memory/1516-220-0x00000000004A0000-0x00000000004A9000-memory.dmp

Filesize
36KB

Download
memory/4412-162-0x0000000010000000-0x000000001003E000-memory.dmp

Filesize
248KB

Download
memory/4412-177-0x0000000010000000-0x000000001003E000-memory.dmp

Filesize
248KB

Download
memory/4412-150-0x0000000010000000-0x000000001003E000-memory.dmp

Filesize
248KB

Download
memory/4412-152-0x0000000010000000-0x000000001003E000-memory.dmp

Filesize
248KB

Download
memory/4412-154-0x0000000010000000-0x000000001003E000-memory.dmp

Filesize
248KB

Download
memory/4412-156-0x0000000010000000-0x000000001003E000-memory.dmp

Filesize
248KB

Download
memory/4412-158-0x0000000010000000-0x000000001003E000-memory.dmp

Filesize
248KB

Download
memory/4412-160-0x0000000010000000-0x000000001003E000-memory.dmp

Filesize
248KB

Download
memory/4412-133-0x0000000000400000-0x00000000005AA000-memory.dmp

Filesize
1.7MB

Download
memory/4412-164-0x0000000010000000-0x000000001003E000-memory.dmp

Filesize
248KB

Download
memory/4412-166-0x0000000010000000-0x000000001003E000-memory.dmp

Filesize
248KB

Download
memory/4412-171-0x0000000010000000-0x000000001003E000-memory.dmp

Filesize
248KB

Download
memory/4412-175-0x0000000010000000-0x000000001003E000-memory.dmp

Filesize
248KB

Download
memory/4412-148-0x0000000010000000-0x000000001003E000-memory.dmp

Filesize
248KB

Download
memory/4412-180-0x0000000010000000-0x000000001003E000-memory.dmp

Filesize
248KB

Download
memory/4412-183-0x0000000010000000-0x000000001003E000-memory.dmp

Filesize
248KB

Download
memory/4412-185-0x0000000010000000-0x000000001003E000-memory.dmp

Filesize
248KB

Download
memory/4412-187-0x0000000010000000-0x000000001003E000-memory.dmp

Filesize
248KB

Download
memory/4412-189-0x0000000010000000-0x000000001003E000-memory.dmp

Filesize
248KB

Download
memory/4412-146-0x0000000010000000-0x000000001003E000-memory.dmp

Filesize
248KB

Download
memory/4412-144-0x0000000010000000-0x000000001003E000-memory.dmp

Filesize
248KB

Download
memory/4412-197-0x0000000010000000-0x000000001003E000-memory.dmp

Filesize
248KB

Download
memory/4412-219-0x0000000000400000-0x00000000005AA000-memory.dmp

Filesize
1.7MB

Download
memory/4412-141-0x0000000010000000-0x000000001003E000-memory.dmp

Filesize
248KB

Download
memory/4412-142-0x0000000010000000-0x000000001003E000-memory.dmp

Filesize
248KB

Download
memory/4412-140-0x0000000010000000-0x000000001003E000-memory.dmp

Filesize
248KB

Download
memory/4412-226-0x0000000010000000-0x000000001003E000-memory.dmp

Filesize
248KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

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Downloads