netwalker | aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17

Analysis

max time kernel
81s
max time network
84s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
24-11-2024 22:57

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General

Target

aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
Size

282KB
MD5

38f3d7cdc3ec83dfd3b8309b569481bc
SHA1

4398b03f857a45af838f0d2b8094a367708c0968
SHA256

aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17
SHA512

14d6d4c611a910c5e9b83c58f42acdee9dd69356066dabdef7386d5c8dc67ab9e153f2e906097f44324babfbf8c5ea0b7156c0befeecb39eaf639fefa24c0858
SSDEEP

3072:uvgIGSgSWSQ2qobyyBPgKlBkqdX2z6oXo:SgIGSgpSQ2J7PLlBkYXxoY

Score

10^/10

netwalker defense_evasion discovery execution impact ransomware spyware stealer

Malware Config

Extracted

Path

C:\Program Files (x86)\MSBuild\BA3AAF-Readme.txt

Family

netwalker

Ransom Note

Hi! Your files are encrypted by Netwalker. All encrypted files for this computer has extension: .ba3aaf -- If for some reason you read this text before the encryption ended, this can be understood by the fact that the computer slows down, and your heart rate has increased due to the ability to turn it off, then we recommend that you move away from the computer and accept that you have been compromised. Rebooting/shutdown will cause you to lose files without the possibility of recovery. -- Our encryption algorithms are very strong and your files are very well protected, the only way to get your files back is to cooperate with us and get the decrypter program. Do not try to recover your files without a decrypter program, you may damage them and then they will be impossible to recover. For us this is just business and to prove to you our seriousness, we will decrypt you one file for free. Just open our website, upload the encrypted file and get the decrypted file for free. -- Steps to get access on our website: 1.Download and install tor-browser: https://torproject.org/ 2.Open our website: rnfdsgm6wb6j6su5txkekw4u4y47kp2eatvu7d6xhyn5cs4lt4pdrqqd.onion 3.Put your personal code in the input form: {code_ba3aaf: kPowKQX10aXt/INXPlQa2DQsbQ541dhNK7Ng0ivZViSJ5L/JiE cVUFLPYQoS6aQT3buiJXAbR1FkeHYfl9HT2G5jbnvIxExR41Zj AiU7RZyEAfvOsFbFIs+WUNrVSHkf8eQY8Hxyj4DkWlQugZAucv Z63VZOTYp3t0E/d1JScMa6wbdDvUNlb7o/UlQb+7o80SfdRL1x x43ImJbrBn7PQ2At5NLG+RzsLsAyEFq3dGfvk9tUBEtThwbxbk hUFaLvFcBYVuH4uJj2g4TURz/8morbvD9I8kZb1Q==}

URLs

http://rnfdsgm6wb6j6su5txkekw4u4y47kp2eatvu7d6xhyn5cs4lt4pdrqqd.onion

Signatures

Detected Netwalker Ransomware 11 IoCs

Detected unpacked Netwalker executable.

resource	yara_rule
behavioral1/memory/2236-1-0x0000000000400000-0x0000000000414000-memory.dmp	netwalker_ransomware
behavioral1/memory/2236-6-0x0000000000400000-0x0000000000414000-memory.dmp	netwalker_ransomware
behavioral1/memory/2236-15-0x0000000000400000-0x0000000000448000-memory.dmp	netwalker_ransomware
behavioral1/memory/2236-804-0x0000000000400000-0x0000000000448000-memory.dmp	netwalker_ransomware
behavioral1/memory/2236-1377-0x0000000000400000-0x0000000000448000-memory.dmp	netwalker_ransomware
behavioral1/memory/2236-2194-0x0000000000400000-0x0000000000448000-memory.dmp	netwalker_ransomware
behavioral1/memory/2236-3321-0x0000000000400000-0x0000000000448000-memory.dmp	netwalker_ransomware
behavioral1/memory/2236-4988-0x0000000000400000-0x0000000000448000-memory.dmp	netwalker_ransomware
behavioral1/memory/2236-7135-0x0000000000400000-0x0000000000448000-memory.dmp	netwalker_ransomware
behavioral1/memory/2236-8235-0x0000000000400000-0x0000000000414000-memory.dmp	netwalker_ransomware
behavioral1/memory/2236-8234-0x0000000000400000-0x0000000000448000-memory.dmp	netwalker_ransomware

Netwalker Ransomware
Ransomware family with multiple versions. Also known as MailTo.
ransomware netwalker
Netwalker family
netwalker
Deletes shadow copies 3 TTPs
Ransomware often targets backup files to inhibit system recovery.
ransomware defense_evasion impact execution

File Deletion
T1070.004

Inhibit System Recovery
T1490

Windows Management Instrumentation
T1047
Renames multiple (7385) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
ransomware

Deletes itself 1 IoCs

pid	Process
4428	cmd.exe

Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003

Drops file in Program Files directory 64 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\J0107132.WMF	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
File opened for modification	C:\Program Files\Java\jre7\lib\zi\EST	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\1033\GrooveForms5\FormsStyles\STS2\background.gif	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
File opened for modification	C:\Program Files\Java\jre7\lib\zi\Etc\GMT-11	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\1033\PUBFTSCM\SCHEME17.CSS	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\org.eclipse.equinox.p2.updatechecker.nl_zh_4.4.0.v20140623020002.jar	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\OneNote\SendToOneNoteNames.gpd	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
File opened for modification	C:\Program Files\Java\jre7\lib\zi\Asia\Oral	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\jre\lib\charsets.jar	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\J0341455.JPG	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
File opened for modification	C:\Program Files\VideoLAN\VLC\lua\http\css\ui-lightness\images\ui-bg_glass_65_ffffff_1x400.png	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\SO02790_.WMF	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\J0182898.WMF	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\MEDIA\OFFICE14\BULLETS\BD21302_.GIF	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\NA00932_.WMF	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\NA00487_.WMF	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\J0382950.JPG	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\BS00441_.WMF	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\PUBWIZ\PROGRAM.DPV	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
File opened for modification	C:\Program Files\7-Zip\Lang\sw.txt	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\MEDIA\OFFICE14\AUTOSHAP\BD18255_.WMF	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\HM00426_.WMF	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
File created	C:\Program Files\Java\jdk1.7.0_80\jre\lib\amd64\BA3AAF-Readme.txt	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Document Themes 14\Theme Colors\Trek.xml	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
File created	C:\Program Files\VideoLAN\VLC\locale\my\LC_MESSAGES\BA3AAF-Readme.txt	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\1033\PUBSPAPR\PDIR43B.GIF	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\features\org.eclipse.ecf.filetransfer.feature_3.9.0.v20140827-1444\feature.xml	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\profiler\modules\locale\org-netbeans-modules-profiler-snaptracer_ja.jar	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\org.eclipse.osgi.compatibility.state_1.0.1.v20140709-1414.jar	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\PH01236U.BMP	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\Groove\ToolData\groove.net\GrooveForms\AddToViewArrowMask.bmp	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\MEDIA\OFFICE14\BULLETS\BD14754_.GIF	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\CMNTY_01.MID	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\org.eclipse.ui.themes_1.0.1.v20140819-1717\css\e4_default_mru_on_win7.css	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\BCSEvents.man	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
File created	C:\Program Files\VideoLAN\VLC\locale\ca\LC_MESSAGES\BA3AAF-Readme.txt	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
File created	C:\Program Files (x86)\Adobe\Reader 9.0\Reader\plug_ins\AcroForm\PMP\BA3AAF-Readme.txt	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\MEDIA\OFFICE14\BULLETS\BD14578_.GIF	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
File opened for modification	C:\Program Files\Windows Journal\Templates\blank.jtp	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
File opened for modification	C:\Program Files\VideoLAN\VLC\lua\http\vlm_export.html	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
File opened for modification	C:\Program Files\Java\jre7\lib\zi\America\Argentina\Buenos_Aires	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\MEDIA\OFFICE14\BULLETS\BD21482_.GIF	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\org.eclipse.e4.ui.workbench_1.2.1.v20140901-1244.jar	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\IN00346_.WMF	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\Library\Analysis\ATPVBAEN.XLAM	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\PUBWIZ\BS2BARB.POC	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\PAGESIZE\PGMN026.XML	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
File opened for modification	C:\Program Files\VideoLAN\VLC\locale\nn\LC_MESSAGES\vlc.mo	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\com.jrockit.mc.browser.jdp_5.5.0.165303.jar	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\PUBWIZ\FEZIP.POC	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\CLIPART\Publisher\Backgrounds\J0143750.GIF	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\Groove\ToolData\groove.net\CommonData\AlertImage_ContactLow.jpg	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
File opened for modification	C:\Program Files (x86)\Adobe\Reader 9.0\Reader\plug_ins\Annotations\Stamps\ENU\SignHere.pdf	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
File opened for modification	C:\Program Files\CompressShow.xsl	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\OutlookAutoDiscover\YAHOO.NO.XML	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\org.eclipse.equinox.p2.core.nl_zh_4.4.0.v20140623020002.jar	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Templates\1033\BloodPressureTracker.xltx	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\visualvm\modules\locale\org-netbeans-core-windows_visualvm.jar	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\org.eclipse.osgi.services.nl_ja_4.4.0.v20140623020002.jar	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\features\org.eclipse.ecf.filetransfer.feature_3.9.0.v20140827-1444\META-INF\MANIFEST.MF	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
File opened for modification	C:\Program Files\Java\jre7\lib\zi\Pacific\Tahiti	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\platform\modules\locale\org-netbeans-swing-outline_zh_CN.jar	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\visualvm\modules\locale\com-sun-tools-visualvm-jvm_zh_CN.jar	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\MEDIA\OFFICE14\BULLETS\BD15135_.GIF	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe

System Location Discovery: System Language Discovery 1 TTPs 4 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	notepad.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	taskkill.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe

Interacts with shadow copies 3 TTPs 1 IoCs

Shadow copies are often targeted by ransomware to inhibit system recovery.

ransomware

File Deletion

T1070.004

Inhibit System Recovery

T1490

Direct Volume Access

T1006

pid	Process
2260	vssadmin.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
6720	taskkill.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2236	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
2236	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
2236	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
2236	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
2236	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
2236	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
2236	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
2236	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
2236	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
2236	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
2236	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
2236	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
2236	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
2236	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
2236	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
2236	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
2236	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
2236	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
2236	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
2236	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
2236	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
2236	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
2236	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
2236	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
2236	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
2236	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
2236	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
2236	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
2236	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
2236	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
2236	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
2236	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
2236	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
2236	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
2236	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
2236	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
2236	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
2236	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
2236	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
2236	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
2236	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
2236	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
2236	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
2236	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
2236	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
2236	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
2236	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
2236	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
2236	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
2236	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
2236	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
2236	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
2236	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
2236	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
2236	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
2236	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
2236	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
2236	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
2236	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
2236	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
2236	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
2236	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
2236	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
2236	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	2236	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
Token: SeImpersonatePrivilege	2236	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
Token: SeBackupPrivilege	4396	vssvc.exe
Token: SeRestorePrivilege	4396	vssvc.exe
Token: SeAuditPrivilege	4396	vssvc.exe
Token: SeDebugPrivilege	6720	taskkill.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 2236 wrote to memory of 2260	2236	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe	29
PID 2236 wrote to memory of 2260	2236	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe	29
PID 2236 wrote to memory of 2260	2236	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe	29
PID 2236 wrote to memory of 2260	2236	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe	29
PID 2236 wrote to memory of 5060	2236	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe	34
PID 2236 wrote to memory of 5060	2236	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe	34
PID 2236 wrote to memory of 5060	2236	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe	34
PID 2236 wrote to memory of 5060	2236	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe	34
PID 2236 wrote to memory of 4428	2236	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe	35
PID 2236 wrote to memory of 4428	2236	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe	35
PID 2236 wrote to memory of 4428	2236	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe	35
PID 2236 wrote to memory of 4428	2236	aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe	35
PID 4428 wrote to memory of 6720	4428	cmd.exe	37
PID 4428 wrote to memory of 6720	4428	cmd.exe	37
PID 4428 wrote to memory of 6720	4428	cmd.exe	37
PID 4428 wrote to memory of 6720	4428	cmd.exe	37

Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
ransomware

C:\Users\Admin\AppData\Local\Temp\aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe
"C:\Users\Admin\AppData\Local\Temp\aee5f898961105ff97a05c7f847b15ae2e29c9270a20f46caf24e525216d6a17.exe"
1⤵
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2236
- C:\Windows\system32\vssadmin.exe
  C:\Windows\system32\vssadmin.exe delete shadows /all /quiet
  2⤵
  - Interacts with shadow copies
  PID:2260
- C:\Windows\SysWOW64\notepad.exe
  C:\Windows\system32\notepad.exe "C:\Users\Admin\Desktop\BA3AAF-Readme.txt"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:5060
- C:\Windows\SysWOW64\cmd.exe
  cmd /c "C:\Users\Admin\AppData\Local\Temp\FC3A.tmp.bat"
  2⤵
  - Deletes itself
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4428
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /F /PID 2236
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:6720

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:4396

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Windows Management Instrumentation

T1047

Persistence

Privilege Escalation

Defense Evasion

Direct Volume Access

T1006

Indicator Removal

T1070

File Deletion

T1070.004

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Inhibit System Recovery

T1490

Replay Monitor

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Downloads

C:\Program Files (x86)\MSBuild\BA3AAF-Readme.txt

Filesize
1KB

MD5
6a138ced4f4aa6fb80604fa3fc11b829

SHA1
b4ee892831ba33ad9d3c0feae05cf81c9208493c

SHA256
4b1c4914f34302c1d7d1df62c462a9e5726ab1b745cd014740e14a59126803fe

SHA512
80dc25f60a5825d7fe7ed489a03c939865444898becf61b42c7c7d52f6ed0dcf137128f6f565f03cc89b2785dbc6c67eca23ad83de14af01ef1c6d4cb9073253

Download Submit
C:\ProgramData\Microsoft\Assistance\Client\1.0\es-ES\Help_CValidator.H1D.ba3aaf

Filesize
12KB

MD5
6a0423e0d1bc83d6b161a9174f89ed0c

SHA1
4a36fc9dfbf01f678e27a3a171e2261ce8f95bb1

SHA256
13f9c535275af19149310bff6d0536d1555f772e281950942bef3fa00436ccbe

SHA512
cb5f8dcf0043f2f4266cb9e71a11ffa84da8e01b93563d213e028cd4bebfe874c75093d2f223d1cb2125b25818ad62cfeea73095aca2a67c337353c41b2bed9f

Download Submit
C:\ProgramData\Microsoft\Assistance\Client\1.0\fr-FR\Help_MValidator.Lck.ba3aaf

Filesize
284B

MD5
031c82116a2ae3fe1c35feb8f76f54a5

SHA1
2c3fbc2a6b6bdc997ee1ed0d4d08e2767215c589

SHA256
209e0d92e906bb3ad246d9eab3bfd613515a7d4f55b933f20ebb1ee79bdf6c2a

SHA512
a595464bed78d9fbedcf2aa4e9045caefe68ab3b57a01e7cfaa08082bff5d0d5957cab2e21651d7fa8300617032c6e4846144d882a63dbc0945a8c0bf1c454f0

Download Submit
C:\Users\Admin\AppData\Local\Temp\FC3A.tmp.bat

Filesize
141B

MD5
8de2f7f6237739c4bbd86bea97e0bc47

SHA1
bf3e975104f9cce022a4897ac69ee7c341315dce

SHA256
1dbf1c918053c7d1040913ce5b7004cc5931d41b746ade4b87cef1fee2f5cf7a

SHA512
cd06856735fbaff24d12fde83eadaea231140b45663d796a047e80ee85f401c7b4f8f4516dca6d21c9ab3961de40763ab02590bcc98280519182049a11e1953a

Download Submit
memory/2236-4988-0x0000000000400000-0x0000000000448000-memory.dmp

Filesize
288KB

Download
memory/2236-804-0x0000000000400000-0x0000000000448000-memory.dmp

Filesize
288KB

Download
memory/2236-1377-0x0000000000400000-0x0000000000448000-memory.dmp

Filesize
288KB

Download
memory/2236-2194-0x0000000000400000-0x0000000000448000-memory.dmp

Filesize
288KB

Download
memory/2236-3321-0x0000000000400000-0x0000000000448000-memory.dmp

Filesize
288KB

Download
memory/2236-15-0x0000000000400000-0x0000000000448000-memory.dmp

Filesize
288KB

Download
memory/2236-7135-0x0000000000400000-0x0000000000448000-memory.dmp

Filesize
288KB

Download
memory/2236-0-0x00000000001B0000-0x00000000001D6000-memory.dmp

Filesize
152KB

Download
memory/2236-1-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2236-6-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2236-8235-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2236-8234-0x0000000000400000-0x0000000000448000-memory.dmp

Filesize
288KB

Download