ef0e45386099ac22d091da175ab13238372fac83448424046d64eb535349e7d0

Analysis

max time kernel
150s
max time network
118s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
05/10/2024, 20:03

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General

Target

ef0e45386099ac22d091da175ab13238372fac83448424046d64eb535349e7d0N.exe
Size

36KB
MD5

3d1869a0c38b13e8e469225bf6098110
SHA1

bd6dab87cc7f33e86b19548e45ecc5a8f66e767e
SHA256

ef0e45386099ac22d091da175ab13238372fac83448424046d64eb535349e7d0
SHA512

2912b639aa84e184c49497842585195765d9376f3965ee0eec32e96cbd69d1e6e77eab2299b5ceaaef14c302c5af0c6c80e9e79d0b8362a7972dc05998068279
SSDEEP

768:kBT37CPKKdJJ1EXBwzEXBwdcMcwBcCBcw/tio/titPdP6:CTW7JJ7TTQoQtFS

Score

9^/10

discovery ransomware upx

Malware Config

Signatures

Renames multiple (4108) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
ransomware

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2720-0-0x0000000000400000-0x000000000040A000-memory.dmp	upx
behavioral1/files/0x000b000000012281-2.dat	upx
behavioral1/files/0x000200000001067f-6.dat	upx
behavioral1/memory/2720-75-0x0000000000400000-0x000000000040A000-memory.dmp	upx

Drops file in Program Files directory 64 IoCs

description	ioc	Process
File created	C:\Program Files\Java\jdk1.7.0_80\jre\lib\security\javaws.policy.tmp	ef0e45386099ac22d091da175ab13238372fac83448424046d64eb535349e7d0N.exe
File created	C:\Program Files\Java\jdk1.7.0_80\jre\lib\zi\Europe\Monaco.tmp	ef0e45386099ac22d091da175ab13238372fac83448424046d64eb535349e7d0N.exe
File created	C:\Program Files (x86)\Common Files\microsoft shared\Smart Tag\1033\MCABOUT.HTM.tmp	ef0e45386099ac22d091da175ab13238372fac83448424046d64eb535349e7d0N.exe
File created	C:\Program Files (x86)\Adobe\Reader 9.0\Reader\PDFPrevHndlr.dll.tmp	ef0e45386099ac22d091da175ab13238372fac83448424046d64eb535349e7d0N.exe
File created	C:\Program Files (x86)\Common Files\microsoft shared\OFFICE14\Csi.dll.tmp	ef0e45386099ac22d091da175ab13238372fac83448424046d64eb535349e7d0N.exe
File created	C:\Program Files\DVD Maker\Shared\DvdStyles\Pets\Pets_notes-txt-background.png.tmp	ef0e45386099ac22d091da175ab13238372fac83448424046d64eb535349e7d0N.exe
File created	C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\com.jrockit.mc.rjmx_5.5.0.165303\lib\smtp.jar.tmp	ef0e45386099ac22d091da175ab13238372fac83448424046d64eb535349e7d0N.exe
File created	C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\org.eclipse.equinox.p2.transport.ecf.nl_zh_4.4.0.v20140623020002.jar.tmp	ef0e45386099ac22d091da175ab13238372fac83448424046d64eb535349e7d0N.exe
File created	C:\Program Files\Mozilla Firefox\fonts\TwemojiMozilla.ttf.tmp	ef0e45386099ac22d091da175ab13238372fac83448424046d64eb535349e7d0N.exe
File created	C:\Program Files\VideoLAN\VLC\locale\ko\LC_MESSAGES\vlc.mo.tmp	ef0e45386099ac22d091da175ab13238372fac83448424046d64eb535349e7d0N.exe
File created	C:\Program Files\Windows Sidebar\Gadgets\Weather.Gadget\images\10.png.tmp	ef0e45386099ac22d091da175ab13238372fac83448424046d64eb535349e7d0N.exe
File created	C:\Program Files\Reference Assemblies\Microsoft\Framework\v3.0\de\WindowsBase.resources.dll.tmp	ef0e45386099ac22d091da175ab13238372fac83448424046d64eb535349e7d0N.exe
File created	C:\Program Files\Windows Journal\Templates\Shorthand.jtp.tmp	ef0e45386099ac22d091da175ab13238372fac83448424046d64eb535349e7d0N.exe
File created	C:\Program Files\Google\Chrome\Application\106.0.5249.119\Locales\mr.pak.tmp	ef0e45386099ac22d091da175ab13238372fac83448424046d64eb535349e7d0N.exe
File created	C:\Program Files\Java\jdk1.7.0_80\jre\lib\zi\America\Winnipeg.tmp	ef0e45386099ac22d091da175ab13238372fac83448424046d64eb535349e7d0N.exe
File created	C:\Program Files\Java\jdk1.7.0_80\jre\lib\zi\Europe\Paris.tmp	ef0e45386099ac22d091da175ab13238372fac83448424046d64eb535349e7d0N.exe
File created	C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\org.eclipse.equinox.jsp.jasper_1.0.400.v20130327-1442.jar.tmp	ef0e45386099ac22d091da175ab13238372fac83448424046d64eb535349e7d0N.exe
File created	C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\platform\lib\locale\boot_zh_CN.jar.tmp	ef0e45386099ac22d091da175ab13238372fac83448424046d64eb535349e7d0N.exe
File created	C:\Program Files\Microsoft Games\Multiplayer\Backgammon\en-US\bckgRes.dll.mui.tmp	ef0e45386099ac22d091da175ab13238372fac83448424046d64eb535349e7d0N.exe
File created	C:\Program Files\Windows Sidebar\Gadgets\PicturePuzzle.Gadget\Images\11.png.tmp	ef0e45386099ac22d091da175ab13238372fac83448424046d64eb535349e7d0N.exe
File created	C:\Program Files (x86)\Common Files\microsoft shared\THEMES14\IRIS\IRIS.INF.tmp	ef0e45386099ac22d091da175ab13238372fac83448424046d64eb535349e7d0N.exe
File created	C:\Program Files\VideoLAN\VLC\plugins\access\libaccess_imem_plugin.dll.tmp	ef0e45386099ac22d091da175ab13238372fac83448424046d64eb535349e7d0N.exe
File created	C:\Program Files\Windows Sidebar\es-ES\Sidebar.exe.mui.tmp	ef0e45386099ac22d091da175ab13238372fac83448424046d64eb535349e7d0N.exe
File created	C:\Program Files\Common Files\Microsoft Shared\ink\it-IT\InkWatson.exe.mui.tmp	ef0e45386099ac22d091da175ab13238372fac83448424046d64eb535349e7d0N.exe
File created	C:\Program Files\DVD Maker\Shared\DvdStyles\HueCycle\15x15dot.png.tmp	ef0e45386099ac22d091da175ab13238372fac83448424046d64eb535349e7d0N.exe
File created	C:\Program Files\Internet Explorer\DiagnosticsHub_is.dll.tmp	ef0e45386099ac22d091da175ab13238372fac83448424046d64eb535349e7d0N.exe
File created	C:\Program Files\Java\jre7\lib\zi\Africa\Maputo.tmp	ef0e45386099ac22d091da175ab13238372fac83448424046d64eb535349e7d0N.exe
File created	C:\Program Files\Mozilla Firefox\api-ms-win-crt-string-l1-1-0.dll.tmp	ef0e45386099ac22d091da175ab13238372fac83448424046d64eb535349e7d0N.exe
File created	C:\Program Files\Reference Assemblies\Microsoft\Framework\v3.5\de\System.Data.Services.resources.dll.tmp	ef0e45386099ac22d091da175ab13238372fac83448424046d64eb535349e7d0N.exe
File created	C:\Program Files (x86)\Adobe\Reader 9.0\Reader\plug_ins\VDKHome\VDK10.SYX.tmp	ef0e45386099ac22d091da175ab13238372fac83448424046d64eb535349e7d0N.exe
File created	C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\org.eclipse.help.webapp.nl_ja_4.4.0.v20140623020002.jar.tmp	ef0e45386099ac22d091da175ab13238372fac83448424046d64eb535349e7d0N.exe
File created	C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\org.eclipse.update.configurator_3.3.300.v20140518-1928.jar.tmp	ef0e45386099ac22d091da175ab13238372fac83448424046d64eb535349e7d0N.exe
File created	C:\Program Files\7-Zip\Lang\lt.txt.tmp	ef0e45386099ac22d091da175ab13238372fac83448424046d64eb535349e7d0N.exe
File created	C:\Program Files\DVD Maker\Shared\DvdStyles\BabyGirl\flower_PreComp_MATTE_PAL.wmv.tmp	ef0e45386099ac22d091da175ab13238372fac83448424046d64eb535349e7d0N.exe
File created	C:\Program Files\DVD Maker\Shared\DvdStyles\OldAge\NavigationRight_SelectionSubpicture.png.tmp	ef0e45386099ac22d091da175ab13238372fac83448424046d64eb535349e7d0N.exe
File created	C:\Program Files\DVD Maker\Shared\DvdStyles\Pets\Pets_btn-back-static.png.tmp	ef0e45386099ac22d091da175ab13238372fac83448424046d64eb535349e7d0N.exe
File created	C:\Program Files\Java\jdk1.7.0_80\bin\java.exe.tmp	ef0e45386099ac22d091da175ab13238372fac83448424046d64eb535349e7d0N.exe
File created	C:\Program Files\Java\jdk1.7.0_80\jre\lib\zi\Asia\Chita.tmp	ef0e45386099ac22d091da175ab13238372fac83448424046d64eb535349e7d0N.exe
File created	C:\Program Files\Java\jre7\lib\zi\America\Argentina\San_Luis.tmp	ef0e45386099ac22d091da175ab13238372fac83448424046d64eb535349e7d0N.exe
File created	C:\Program Files\Java\jre7\lib\zi\America\Lima.tmp	ef0e45386099ac22d091da175ab13238372fac83448424046d64eb535349e7d0N.exe
File created	C:\Program Files\Windows Journal\fr-FR\PDIALOG.exe.mui.tmp	ef0e45386099ac22d091da175ab13238372fac83448424046d64eb535349e7d0N.exe
File created	C:\Program Files (x86)\Common Files\microsoft shared\THEMES14\QUAD\QUAD.INF.tmp	ef0e45386099ac22d091da175ab13238372fac83448424046d64eb535349e7d0N.exe
File created	C:\Program Files\DVD Maker\Shared\DvdStyles\Rectangles\NavigationLeft_ButtonGraphic.png.tmp	ef0e45386099ac22d091da175ab13238372fac83448424046d64eb535349e7d0N.exe
File created	C:\Program Files\DVD Maker\Shared\DvdStyles\Sports\NextMenuButtonIcon.png.tmp	ef0e45386099ac22d091da175ab13238372fac83448424046d64eb535349e7d0N.exe
File created	C:\Program Files\Java\jdk1.7.0_80\COPYRIGHT.tmp	ef0e45386099ac22d091da175ab13238372fac83448424046d64eb535349e7d0N.exe
File created	C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\org.eclipse.ui.themes_1.0.1.v20140819-1717\images\gtkHandle.png.tmp	ef0e45386099ac22d091da175ab13238372fac83448424046d64eb535349e7d0N.exe
File created	C:\Program Files\Mozilla Firefox\api-ms-win-crt-convert-l1-1-0.dll.tmp	ef0e45386099ac22d091da175ab13238372fac83448424046d64eb535349e7d0N.exe
File created	C:\Program Files (x86)\Adobe\Reader 9.0\Resource\Font\MyriadPro-Regular.otf.tmp	ef0e45386099ac22d091da175ab13238372fac83448424046d64eb535349e7d0N.exe
File created	C:\Program Files\DVD Maker\Shared\DvdStyles\Vignette\NavigationUp_ButtonGraphic.png.tmp	ef0e45386099ac22d091da175ab13238372fac83448424046d64eb535349e7d0N.exe
File created	C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\org.eclipse.e4.ui.workbench.addons.swt_1.1.1.v20140903-0821.jar.tmp	ef0e45386099ac22d091da175ab13238372fac83448424046d64eb535349e7d0N.exe
File created	C:\Program Files\Java\jre7\bin\server\classes.jsa.tmp	ef0e45386099ac22d091da175ab13238372fac83448424046d64eb535349e7d0N.exe
File created	C:\Program Files\Java\jre7\lib\zi\Etc\GMT+8.tmp	ef0e45386099ac22d091da175ab13238372fac83448424046d64eb535349e7d0N.exe
File created	C:\Program Files\Windows Sidebar\Gadgets\Clock.Gadget\images\trad_s.png.tmp	ef0e45386099ac22d091da175ab13238372fac83448424046d64eb535349e7d0N.exe
File created	C:\Program Files\Common Files\SpeechEngines\Microsoft\TTS20\MSTTSCommon.dll.tmp	ef0e45386099ac22d091da175ab13238372fac83448424046d64eb535349e7d0N.exe
File created	C:\Program Files\Microsoft Games\Multiplayer\Checkers\ChkrRes.dll.tmp	ef0e45386099ac22d091da175ab13238372fac83448424046d64eb535349e7d0N.exe
File created	C:\Program Files\Windows Sidebar\Gadgets\PicturePuzzle.Gadget\Images\setting_back.png.tmp	ef0e45386099ac22d091da175ab13238372fac83448424046d64eb535349e7d0N.exe
File created	C:\Program Files\Windows Sidebar\Gadgets\RSSFeeds.Gadget\es-ES\js\settings.js.tmp	ef0e45386099ac22d091da175ab13238372fac83448424046d64eb535349e7d0N.exe
File created	C:\Program Files (x86)\Common Files\microsoft shared\THEMES14\SATIN\PREVIEW.GIF.tmp	ef0e45386099ac22d091da175ab13238372fac83448424046d64eb535349e7d0N.exe
File created	C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\platform\modules\ext\locale\updater_zh_CN.jar.tmp	ef0e45386099ac22d091da175ab13238372fac83448424046d64eb535349e7d0N.exe
File created	C:\Program Files\Java\jre7\bin\glib-lite.dll.tmp	ef0e45386099ac22d091da175ab13238372fac83448424046d64eb535349e7d0N.exe
File created	C:\Program Files\Java\jre7\lib\zi\Europe\Madrid.tmp	ef0e45386099ac22d091da175ab13238372fac83448424046d64eb535349e7d0N.exe
File created	C:\Program Files\Java\jre7\lib\zi\Europe\Simferopol.tmp	ef0e45386099ac22d091da175ab13238372fac83448424046d64eb535349e7d0N.exe
File created	C:\Program Files\VideoLAN\VLC\plugins\video_filter\libcroppadd_plugin.dll.tmp	ef0e45386099ac22d091da175ab13238372fac83448424046d64eb535349e7d0N.exe
File created	C:\Program Files\Windows Sidebar\Gadgets\Clock.Gadget\images\square.png.tmp	ef0e45386099ac22d091da175ab13238372fac83448424046d64eb535349e7d0N.exe

System Location Discovery: System Language Discovery 1 TTPs 1 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	ef0e45386099ac22d091da175ab13238372fac83448424046d64eb535349e7d0N.exe

C:\Users\Admin\AppData\Local\Temp\ef0e45386099ac22d091da175ab13238372fac83448424046d64eb535349e7d0N.exe
"C:\Users\Admin\AppData\Local\Temp\ef0e45386099ac22d091da175ab13238372fac83448424046d64eb535349e7d0N.exe"
1⤵
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
PID:2720

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\$Recycle.Bin\S-1-5-21-1488793075-819845221-1497111674-1000\desktop.ini.tmp

Filesize
36KB

MD5
ac093e44bd9f1a9102f4fa6d13873c59

SHA1
5a7602cafe183de1f9d31d6c27f4a1dc4f6b2135

SHA256
d41d95148b29dd1b86d63eb94bdc3d62a814ec0af7dbbd2c225466bed3d01825

SHA512
64bc9c3d792b87cb723fdb9a014d6034cb9e0d999059548556512d2eea677e07b2bef6a2095ec83c78865a05c24eefdcddce9bb1f72af63d0b7e0b0b8a146add

Download Submit
C:\MSOCache\All Users\{90140000-0011-0000-0000-0000000FF1CE}-C\Office64WW.xml.tmp

Filesize
45KB

MD5
665a1bf69a8c45b0d86a83636385604d

SHA1
c1b0101485fbcd276492b24f55c3b635a9722f9c

SHA256
38a07196dffcbc7a5006091a020360f21b45c8321331704455f3f629cb893c61

SHA512
cd99c9a5fc2048353f9c153cb08d04f0d9d060dbe0d682bfce6fbb3a6103100aea8b43e9766de401a39bdad0586f9a3a4d2f1e6598e289f9ef37c55bfd2c1aae

Download Submit
memory/2720-0-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download
memory/2720-75-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download