marsstealer | 82cdcebe9f06866b53f0c2db61c180adb9b6ec53ded69a714265bbf7d8035311

Analysis

max time kernel
137s
max time network
139s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
26-07-2024 04:10

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General

Target

82cdcebe9f06866b53f0c2db61c180adb9b6ec53ded69a714265bbf7d8035311.exe
Size

176KB
MD5

734cb9648d95999c2d4d1221140825aa
SHA1

f606a5e69cd8bae807c2d16e36875ab4ce239e34
SHA256

82cdcebe9f06866b53f0c2db61c180adb9b6ec53ded69a714265bbf7d8035311
SHA512

bdadf6df0be7695d0a4d7dffc54c8d087c00f88c4a2b9a5d4a3cc44b16d0183b9838ef5d45a5900f3ddb6a39d3a76fb99265120f7cb6a4962422b3629b344350
SSDEEP

3072:3Y3/H9YArDiGiDSDCosstkZtqJSp8Bb8EGEGCH:o3/WuDi3stJ8EGZ

Score

10^/10

marsstealer default aspackv2 discovery stealer

Malware Config

Extracted

Family

marsstealer

Botnet

Default

Signatures

Mars Stealer
An infostealer written in C++ based on other infostealers.
stealer marsstealer

ASPack v2.12-2.42 1 IoCs

Detects executables packed with ASPack v2.12-2.42

aspackv2

resource	yara_rule
behavioral1/files/0x0008000000012115-7.dat	aspack_v212_v242

Executes dropped EXE 1 IoCs

pid	Process
2772	nvMLUo.exe

Loads dropped DLL 2 IoCs

pid	Process
2672	82cdcebe9f06866b53f0c2db61c180adb9b6ec53ded69a714265bbf7d8035311.exe
2672	82cdcebe9f06866b53f0c2db61c180adb9b6ec53ded69a714265bbf7d8035311.exe

Drops file in Program Files directory 64 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Google\Update\1.3.36.151\GoogleCrashHandler64.exe	nvMLUo.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\1033\ONELEV.EXE	nvMLUo.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\MSTORDB.EXE	nvMLUo.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\OUTLOOK.EXE	nvMLUo.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\bin\unpack200.exe	nvMLUo.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\bin\javah.exe	nvMLUo.exe
File opened for modification	C:\Program Files\Java\jre7\bin\ktab.exe	nvMLUo.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\NAMECONTROLSERVER.EXE	nvMLUo.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\bin\extcheck.exe	nvMLUo.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\bin\javac.exe	nvMLUo.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\platform\lib\nbexec64.exe	nvMLUo.exe
File opened for modification	C:\Program Files\Java\jre7\bin\java.exe	nvMLUo.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\bin\java.exe	nvMLUo.exe
File opened for modification	C:\Program Files\VideoLAN\VLC\vlc.exe	nvMLUo.exe
File opened for modification	C:\Program Files\Microsoft Office\Office14\MSOHTMED.EXE	nvMLUo.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\bin\jps.exe	nvMLUo.exe
File opened for modification	C:\Program Files\Java\jre7\bin\klist.exe	nvMLUo.exe
File opened for modification	C:\Program Files\Windows Journal\PDIALOG.exe	nvMLUo.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\VPREVIEW.EXE	nvMLUo.exe
File opened for modification	C:\Program Files (x86)\Windows Mail\wabmig.exe	nvMLUo.exe
File opened for modification	C:\Program Files\Google\Chrome\Application\chrome_proxy.exe	nvMLUo.exe
File opened for modification	C:\Program Files\Java\jre7\bin\kinit.exe	nvMLUo.exe
File opened for modification	C:\Program Files\Microsoft Games\Minesweeper\MineSweeper.exe	nvMLUo.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\bin\jdb.exe	nvMLUo.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\IEContentService.exe	nvMLUo.exe
File opened for modification	C:\Program Files (x86)\Adobe\Reader 9.0\Reader\reader_sl.exe	nvMLUo.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\bin\schemagen.exe	nvMLUo.exe
File opened for modification	C:\Program Files\Mozilla Firefox\maintenanceservice_installer.exe	nvMLUo.exe
File opened for modification	C:\Program Files (x86)\Adobe\Reader 9.0\Setup Files\{AC76BA86-7AD7-1033-7B44-A90000000001}\Setup.exe	nvMLUo.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE	nvMLUo.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\bin\pack200.exe	nvMLUo.exe
File opened for modification	C:\Program Files (x86)\Adobe\Reader 9.0\Reader\LogTransport2.exe	nvMLUo.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\MSOHTMED.EXE	nvMLUo.exe
File opened for modification	C:\Program Files\Mozilla Firefox\firefox.exe	nvMLUo.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\bin\jstat.exe	nvMLUo.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\bin\rmic.exe	nvMLUo.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\bin\tnameserv.exe	nvMLUo.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\bin\wsgen.exe	nvMLUo.exe
File opened for modification	C:\Program Files\Java\jre7\bin\orbd.exe	nvMLUo.exe
File opened for modification	C:\Program Files\Java\jre7\bin\servertool.exe	nvMLUo.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\bin\jarsigner.exe	nvMLUo.exe
File opened for modification	C:\Program Files\Google\Chrome\Application\106.0.5249.119\elevation_service.exe	nvMLUo.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\bin\idlj.exe	nvMLUo.exe
File opened for modification	C:\Program Files\Java\jre7\bin\unpack200.exe	nvMLUo.exe
File opened for modification	C:\Program Files\Microsoft Games\FreeCell\FreeCell.exe	nvMLUo.exe
File opened for modification	C:\Program Files\DVD Maker\DVDMaker.exe	nvMLUo.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\jre\bin\rmid.exe	nvMLUo.exe
File opened for modification	C:\Program Files\Windows Mail\WinMail.exe	nvMLUo.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\jre\bin\javaw.exe	nvMLUo.exe
File opened for modification	C:\Program Files\Google\Chrome\Application\106.0.5249.119\notification_helper.exe	nvMLUo.exe
File opened for modification	C:\Program Files\Java\jre7\bin\javaw.exe	nvMLUo.exe
File opened for modification	C:\Program Files\Microsoft Games\Multiplayer\Checkers\chkrzm.exe	nvMLUo.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\ONENOTE.EXE	nvMLUo.exe
File opened for modification	C:\Program Files\Google\Chrome\Application\106.0.5249.119\Installer\setup.exe	nvMLUo.exe
File opened for modification	C:\Program Files (x86)\Google\Update\1.3.36.151\GoogleUpdateBroker.exe	nvMLUo.exe
File opened for modification	C:\Program Files\Java\jre7\bin\ssvagent.exe	nvMLUo.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\bin\keytool.exe	nvMLUo.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\bin\ktab.exe	nvMLUo.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\ACCICONS.EXE	nvMLUo.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\bin\appletviewer.exe	nvMLUo.exe
File opened for modification	C:\Program Files\Java\jre7\bin\jabswitch.exe	nvMLUo.exe
File opened for modification	C:\Program Files\Microsoft Games\Mahjong\Mahjong.exe	nvMLUo.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\jre\bin\jp2launcher.exe	nvMLUo.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\platform\lib\nbexec.exe	nvMLUo.exe

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 3 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	82cdcebe9f06866b53f0c2db61c180adb9b6ec53ded69a714265bbf7d8035311.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	nvMLUo.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2672 wrote to memory of 2772	2672	82cdcebe9f06866b53f0c2db61c180adb9b6ec53ded69a714265bbf7d8035311.exe	30
PID 2672 wrote to memory of 2772	2672	82cdcebe9f06866b53f0c2db61c180adb9b6ec53ded69a714265bbf7d8035311.exe	30
PID 2672 wrote to memory of 2772	2672	82cdcebe9f06866b53f0c2db61c180adb9b6ec53ded69a714265bbf7d8035311.exe	30
PID 2672 wrote to memory of 2772	2672	82cdcebe9f06866b53f0c2db61c180adb9b6ec53ded69a714265bbf7d8035311.exe	30
PID 2772 wrote to memory of 1192	2772	nvMLUo.exe	32
PID 2772 wrote to memory of 1192	2772	nvMLUo.exe	32
PID 2772 wrote to memory of 1192	2772	nvMLUo.exe	32
PID 2772 wrote to memory of 1192	2772	nvMLUo.exe	32

C:\Users\Admin\AppData\Local\Temp\82cdcebe9f06866b53f0c2db61c180adb9b6ec53ded69a714265bbf7d8035311.exe
"C:\Users\Admin\AppData\Local\Temp\82cdcebe9f06866b53f0c2db61c180adb9b6ec53ded69a714265bbf7d8035311.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2672
- C:\Users\Admin\AppData\Local\Temp\nvMLUo.exe
  C:\Users\Admin\AppData\Local\Temp\nvMLUo.exe
  2⤵
  - Executes dropped EXE
  - Drops file in Program Files directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2772
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c ""C:\Users\Admin\AppData\Local\Temp\016d48b7.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    PID:1192

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\NT8UAXPK\k2[1].rar

Filesize
4B

MD5
d3b07384d113edec49eaa6238ad5ff00

SHA1
f1d2d2f924e986ac86fdf7b36c94bcdf32beec15

SHA256
b5bb9d8014a0f9b1d61e21e796d78dccdf1352f23cd32812f4850b878ae4944c

SHA512
0cf9180a764aba863a67b6d72f0918bc131c6772642cb2dce5a34f0a702f9470ddc2bf125c12198b1995c233c34b4afd346c54a2334c350a948a51b6e8b4e6b6

Download Submit
C:\Users\Admin\AppData\Local\Temp\016d48b7.bat

Filesize
187B

MD5
ab1e68dd7a17cad0dc5d4326975f1187

SHA1
5e06f96e0e426314f6f4f0f38312b5e6af23acbc

SHA256
44aecdb66334b41fc8a1f3ef3f5b9639e15fd38179d0d922aff8ed6be88ef0a0

SHA512
b6803893cdd7ac09b9778cf99b5f754f7fe51dfd2b4a716a52146ec5f826199ea46c1909730ac6e45d57e04388f08fb8d06fbca3c90f02497643c901c61758f7

Download Submit
C:\Users\Admin\AppData\Local\Temp\1A3752F1.exe

Filesize
4B

MD5
20879c987e2f9a916e578386d499f629

SHA1
c7b33ddcc42361fdb847036fc07e880b81935d5d

SHA256
9f2981a7cc4d40a2a409dc895de64253acd819d7c0011c8e80b86fe899464e31

SHA512
bcdde1625364dd6dd143b45bdcec8d59cf8982aff33790d390b839f3869e0e815684568b14b555a596d616252aeeaa98dac2e6e551c9095ea11a575ff25ff84f

Download Submit
C:\Users\Admin\AppData\Local\Temp\nvMLUo.exe

Filesize
15KB

MD5
f7d21de5c4e81341eccd280c11ddcc9a

SHA1
d4e9ef10d7685d491583c6fa93ae5d9105d815bd

SHA256
4485df22c627fa0bb899d79aa6ff29bc5be1dbc3caa2b7a490809338d54b7794

SHA512
e4553b86b083996038bacfb979ad0b86f578f95185d8efac34a77f6cc73e491d4f70e1449bbc9eb1d62f430800c1574101b270e1cb0eeed43a83049a79b636a3

Download Submit
memory/2672-10-0x0000000000860000-0x0000000000869000-memory.dmp

Filesize
36KB

Download
memory/2672-9-0x0000000000860000-0x0000000000869000-memory.dmp

Filesize
36KB

Download
memory/2672-8-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/2772-11-0x0000000000860000-0x0000000000869000-memory.dmp

Filesize
36KB

Download
memory/2772-53-0x0000000000860000-0x0000000000869000-memory.dmp

Filesize
36KB

Download