b8d6705ee853b6f830e6487419e13f4a1d95537dbb360534b744b2fca738726e

Analysis

max time kernel
138s
max time network
97s
platform
windows10_x64
resource
win10v200722
submitted
09/10/2020, 11:15

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General

Target

osno-crypted.bin.exe

Score

8^/10

ransomware

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
3800	Osno Decryptor.exe

Modifies extensions of user files 3 IoCs

Ransomware generally changes the extension on encrypted files.

ransomware

description	ioc	Process
File opened for modification	\??\c:\users\admin\pictures\newlimit.tiff	MSBuild.exe
File opened for modification	\??\c:\users\admin\pictures\selectenter.tiff	MSBuild.exe
File opened for modification	\??\c:\users\admin\pictures\traceremove.tiff	MSBuild.exe

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
11	ip-api.com

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2096 set thread context of 3524	2096	osno-crypted.bin.exe	75

Drops file in Program Files directory 64 IoCs

description	ioc	Process
File opened for modification	\??\c:\program files\java\jdk1.8.0_66\bin\java.exe	MSBuild.exe
File opened for modification	\??\c:\program files\java\jdk1.8.0_66\lib\missioncontrol\features\org.eclipse.equinox.p2.rcp.feature_1.2.0.v20140523-0116\feature.xml	MSBuild.exe
File opened for modification	\??\c:\program files\java\jdk1.8.0_66\lib\visualvm\visualvm\config\modules\com-sun-tools-visualvm-attach.xml	MSBuild.exe
File opened for modification	\??\c:\program files\java\jdk1.8.0_66\lib\visualvm\visualvm\config\modules\com-sun-tools-visualvm-core.xml	MSBuild.exe
File opened for modification	\??\c:\program files\java\jdk1.8.0_66\lib\missioncontrol\plugins\org.eclipse.ui.themes_1.0.1.v20140819-1717\plugin.xml	MSBuild.exe
File opened for modification	\??\c:\program files\java\jdk1.8.0_66\lib\visualvm\platform\config\modules\org-netbeans-modules-options-keymap.xml	MSBuild.exe
File opened for modification	\??\c:\program files\java\jdk1.8.0_66\lib\visualvm\platform\update_tracking\org-netbeans-modules-spi-actions.xml	MSBuild.exe
File opened for modification	\??\c:\program files\java\jdk1.8.0_66\lib\visualvm\platform\update_tracking\org-openide-nodes.xml	MSBuild.exe
File opened for modification	\??\c:\program files\java\jdk1.8.0_66\lib\missioncontrol\plugins\com.jrockit.mc.console.ui.notification_5.5.0.165303\html\dcommon\gifs\feedbck2.gif	MSBuild.exe
File opened for modification	\??\c:\program files\java\jdk1.8.0_66\lib\missioncontrol\plugins\org.eclipse.ui.themes_1.0.1.v20140819-1717\images\macgrey.png	MSBuild.exe
File opened for modification	\??\c:\program files\java\jre1.8.0_66\bin\java.exe	MSBuild.exe
File opened for modification	\??\c:\program files\java\jre1.8.0_66\lib\images\cursors\win32_linknodrop32x32.gif	MSBuild.exe
File opened for modification	\??\c:\program files\common files\microsoft shared\ink\alphabet.xml	MSBuild.exe
File opened for modification	\??\c:\program files\java\jdk1.8.0_66\lib\missioncontrol\features\org.eclipse.ecf.filetransfer.httpclient4.ssl.feature_1.0.0.v20140827-1444\license.html	MSBuild.exe
File opened for modification	\??\c:\program files\java\jdk1.8.0_66\lib\missioncontrol\features\org.eclipse.emf.ecore_2.10.1.v20140901-1043\epl-v10.html	MSBuild.exe
File opened for modification	\??\c:\program files\java\jdk1.8.0_66\lib\missioncontrol\features\org.eclipse.equinox.p2.rcp.feature_1.2.0.v20140523-0116\epl-v10.html	MSBuild.exe
File opened for modification	\??\c:\program files\microsoft office\root\document themes 16\theme colors\red orange.xml	MSBuild.exe
File opened for modification	\??\c:\program files\microsoft office\root\document themes 16\theme fonts\franklin gothic.xml	MSBuild.exe
File opened for modification	\??\c:\program files\internet explorer\extexport.exe	MSBuild.exe
File opened for modification	\??\c:\program files\java\jdk1.8.0_66\bin\unpack200.exe	MSBuild.exe
File opened for modification	\??\c:\program files\java\jdk1.8.0_66\lib\visualvm\platform\config\modules\org-openide-compat.xml	MSBuild.exe
File opened for modification	\??\c:\program files\java\jdk1.8.0_66\lib\visualvm\platform\config\modules\org-openide-dialogs.xml	MSBuild.exe
File opened for modification	\??\c:\program files\java\jdk1.8.0_66\lib\visualvm\platform\update_tracking\org-netbeans-modules-masterfs-nio2.xml	MSBuild.exe
File opened for modification	\??\c:\program files\java\jdk1.8.0_66\lib\visualvm\platform\update_tracking\org-openide-explorer.xml	MSBuild.exe
File opened for modification	\??\c:\program files\common files\microsoft shared\clicktorun\appvcleaner.exe	MSBuild.exe
File created	\??\c:\program files\common files\microsoft shared\ink\fsdefinitions\main\base.xml	MSBuild.exe
File opened for modification	\??\c:\program files\java\jdk1.8.0_66\jre\bin\server\xusage.txt	MSBuild.exe
File opened for modification	\??\c:\program files\java\jdk1.8.0_66\lib\visualvm\platform\config\modules\org-openide-io.xml	MSBuild.exe
File opened for modification	\??\c:\program files\microsoft office\root\document themes 16\theme colors\slipstream.xml	MSBuild.exe
File opened for modification	\??\c:\program files\microsoft office\root\document themes 16\theme fonts\candara.xml	MSBuild.exe
File opened for modification	\??\c:\program files\java\jdk1.8.0_66\lib\missioncontrol\plugins\com.jrockit.mc.console.ui.notification_5.5.0.165303\com.jrockit.mc.console.ui.notification_contexts.xml	MSBuild.exe
File opened for modification	\??\c:\program files\java\jdk1.8.0_66\lib\missioncontrol\plugins\org.eclipse.ui.themes_1.0.1.v20140819-1717\images\winclassictsframe.png	MSBuild.exe
File opened for modification	\??\c:\program files\java\jdk1.8.0_66\lib\visualvm\platform\update_tracking\org-netbeans-modules-templates.xml	MSBuild.exe
File opened for modification	\??\c:\program files\java\jdk1.8.0_66\lib\visualvm\visualvm\update_tracking\com-sun-tools-visualvm-sampler.xml	MSBuild.exe
File opened for modification	\??\c:\program files\java\jdk1.8.0_66\lib\missioncontrol\plugins\com.jrockit.mc.console.ui.notification_5.5.0.165303\html\dcommon\gifs\bookbig.gif	MSBuild.exe
File opened for modification	\??\c:\program files\java\jdk1.8.0_66\lib\visualvm\platform\config\modules\org-netbeans-core-ui.xml	MSBuild.exe
File opened for modification	\??\c:\program files\java\jdk1.8.0_66\lib\visualvm\platform\config\modules\org-netbeans-modules-options-api.xml	MSBuild.exe
File opened for modification	\??\c:\program files\java\jdk1.8.0_66\lib\visualvm\visualvm\config\modules\com-sun-tools-visualvm-heapdump.xml	MSBuild.exe
File opened for modification	\??\c:\program files\common files\microsoft shared\ink\fsdefinitions\oskpred\oskpredbase.xml	MSBuild.exe
File opened for modification	\??\c:\program files\java\jdk1.8.0_66\bin\jinfo.exe	MSBuild.exe
File opened for modification	\??\c:\program files\java\jdk1.8.0_66\include\jawt.h	MSBuild.exe
File opened for modification	\??\c:\program files\java\jdk1.8.0_66\lib\missioncontrol\features\org.eclipse.babel.nls_eclipse_ja_4.4.0.v20140623020002\license.html	MSBuild.exe
File opened for modification	\??\c:\program files\microsoft office\root\flattener\flattener.exe	MSBuild.exe
File opened for modification	\??\c:\program files\common files\microsoft shared\ink\fsdefinitions\auxpad.xml	MSBuild.exe
File opened for modification	\??\c:\program files\java\jdk1.8.0_66\lib\missioncontrol\plugins\com.jrockit.mc.console.ui.notification_5.5.0.165303\plugin.xml	MSBuild.exe
File opened for modification	\??\c:\program files\java\jre1.8.0_66\bin\jabswitch.exe	MSBuild.exe
File opened for modification	\??\c:\program files\microsoft office\root\document themes 16\theme colors\blue warm.xml	MSBuild.exe
File opened for modification	\??\c:\program files\java\jdk1.8.0_66\lib\missioncontrol\plugins\com.jrockit.mc.console.ui.notification_5.5.0.165303\html\dcommon\gifs\help.gif	MSBuild.exe
File opened for modification	\??\c:\program files\java\jdk1.8.0_66\lib\missioncontrol\plugins\org.eclipse.ui.themes_1.0.1.v20140819-1717\css\e4_classic_winxp.css	MSBuild.exe
File opened for modification	\??\c:\program files\java\jdk1.8.0_66\lib\visualvm\platform\config\modules\org-netbeans-modules-masterfs.xml	MSBuild.exe
File opened for modification	\??\c:\program files\microsoft office\root\document themes 16\theme colors\paper.xml	MSBuild.exe
File opened for modification	\??\c:\program files\7-zip\lang\tr.txt	MSBuild.exe
File opened for modification	\??\c:\program files\common files\microsoft shared\msinfo\msinfo32.exe	MSBuild.exe
File opened for modification	\??\c:\program files\java\jdk1.8.0_66\jre\thirdpartylicensereadme.txt	MSBuild.exe
File opened for modification	\??\c:\program files\java\jdk1.8.0_66\lib\missioncontrol\features\com.jrockit.mc.feature.console_5.5.0.165303\feature.xml	MSBuild.exe
File opened for modification	\??\c:\program files\java\jdk1.8.0_66\lib\visualvm\platform\update_tracking\org-openide-options.xml	MSBuild.exe
File opened for modification	\??\c:\program files\java\jre1.8.0_66\bin\javaws.exe	MSBuild.exe
File opened for modification	\??\c:\program files\microsoft office\appxmanifest.xml	MSBuild.exe
File opened for modification	\??\c:\program files\microsoft office\root\document themes 16\theme fonts\times new roman-arial.xml	MSBuild.exe
File opened for modification	\??\c:\program files\7-zip\lang\pl.txt	MSBuild.exe
File opened for modification	\??\c:\program files\common files\microsoft shared\stationery\bears.jpg	MSBuild.exe
File opened for modification	\??\c:\program files\java\jdk1.8.0_66\javafx-src.zip	MSBuild.exe
File opened for modification	\??\c:\program files\java\jdk1.8.0_66\lib\missioncontrol\plugins\com.jrockit.mc.console.ui.notification_5.5.0.165303\html\dcommon\gifs\indxicon.gif	MSBuild.exe
File opened for modification	\??\c:\program files\java\jdk1.8.0_66\lib\visualvm\platform\update_tracking\org-openide-actions.xml	MSBuild.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4040	3800	WerFault.exe	85

Enumerates processes with tasklist 1 TTPs 1 IoCs

Process Discovery

T1057

pid	Process
1960	tasklist.exe

Suspicious behavior: EnumeratesProcesses 17 IoCs

pid	Process
3524	MSBuild.exe
3524	MSBuild.exe
3524	MSBuild.exe
4040	WerFault.exe
4040	WerFault.exe
4040	WerFault.exe
4040	WerFault.exe
4040	WerFault.exe
4040	WerFault.exe
4040	WerFault.exe
4040	WerFault.exe
4040	WerFault.exe
4040	WerFault.exe
4040	WerFault.exe
4040	WerFault.exe
4040	WerFault.exe
4040	WerFault.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	3524	MSBuild.exe
Token: SeDebugPrivilege	1960	tasklist.exe
Token: SeRestorePrivilege	4040	WerFault.exe
Token: SeBackupPrivilege	4040	WerFault.exe
Token: SeDebugPrivilege	4040	WerFault.exe

Suspicious use of WriteProcessMemory 29 IoCs

description	pid	Process	procid_target
PID 2096 wrote to memory of 3524	2096	osno-crypted.bin.exe	75
PID 2096 wrote to memory of 3524	2096	osno-crypted.bin.exe	75
PID 2096 wrote to memory of 3524	2096	osno-crypted.bin.exe	75
PID 2096 wrote to memory of 3524	2096	osno-crypted.bin.exe	75
PID 2096 wrote to memory of 3524	2096	osno-crypted.bin.exe	75
PID 2096 wrote to memory of 3524	2096	osno-crypted.bin.exe	75
PID 2096 wrote to memory of 3524	2096	osno-crypted.bin.exe	75
PID 2096 wrote to memory of 3524	2096	osno-crypted.bin.exe	75
PID 3524 wrote to memory of 3716	3524	MSBuild.exe	76
PID 3524 wrote to memory of 3716	3524	MSBuild.exe	76
PID 3524 wrote to memory of 3716	3524	MSBuild.exe	76
PID 3716 wrote to memory of 4060	3716	cmd.exe	78
PID 3716 wrote to memory of 4060	3716	cmd.exe	78
PID 3716 wrote to memory of 4060	3716	cmd.exe	78
PID 3716 wrote to memory of 2736	3716	cmd.exe	79
PID 3716 wrote to memory of 2736	3716	cmd.exe	79
PID 3716 wrote to memory of 2736	3716	cmd.exe	79
PID 3716 wrote to memory of 3964	3716	cmd.exe	80
PID 3716 wrote to memory of 3964	3716	cmd.exe	80
PID 3716 wrote to memory of 3964	3716	cmd.exe	80
PID 3524 wrote to memory of 3152	3524	MSBuild.exe	82
PID 3524 wrote to memory of 3152	3524	MSBuild.exe	82
PID 3524 wrote to memory of 3152	3524	MSBuild.exe	82
PID 3152 wrote to memory of 1960	3152	cmd.exe	84
PID 3152 wrote to memory of 1960	3152	cmd.exe	84
PID 3152 wrote to memory of 1960	3152	cmd.exe	84
PID 3524 wrote to memory of 3800	3524	MSBuild.exe	85
PID 3524 wrote to memory of 3800	3524	MSBuild.exe	85
PID 3524 wrote to memory of 3800	3524	MSBuild.exe	85

C:\Users\Admin\AppData\Local\Temp\osno-crypted.bin.exe
"C:\Users\Admin\AppData\Local\Temp\osno-crypted.bin.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2096
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
  2⤵
  - Modifies extensions of user files
  - Drops file in Program Files directory
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3524
- - C:\Windows\SysWOW64\cmd.exe
    "cmd.exe" /C chcp 65001 && netsh wlan show profile | findstr All
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:3716
  - - C:\Windows\SysWOW64\chcp.com
      chcp 65001
      4⤵
      PID:4060
  - - C:\Windows\SysWOW64\netsh.exe
      netsh wlan show profile
      4⤵
      PID:2736
  - - C:\Windows\SysWOW64\findstr.exe
      findstr All
      4⤵
      PID:3964
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /C tasklist /FO TABLE > "C:\Users\Admin\AppData\Local\Temp\3873d8888a3836bc92341667cb978e5e\e490a4874391a1e4ab67cdcda1604a77\processes.txt"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:3152
  - - C:\Windows\SysWOW64\tasklist.exe
      tasklist /FO TABLE
      4⤵
      Enumerates processes with tasklist
      Suspicious use of AdjustPrivilegeToken
      PID:1960
- - C:\Users\Admin\Desktop\Osno Decryptor.exe
    "C:\Users\Admin\Desktop\Osno Decryptor.exe"
    3⤵
    - Executes dropped EXE
    PID:3800
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3800 -s 1128
      4⤵
      Program crash
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:4040

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Process Discovery

T1057

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2096-1-0x0000000000610000-0x0000000000611000-memory.dmp

Filesize
4KB

Download
memory/2096-3-0x0000000004F50000-0x0000000004F51000-memory.dmp

Filesize
4KB

Download
memory/2096-4-0x00000000029B0000-0x00000000029BC000-memory.dmp

Filesize
48KB

Download
memory/2096-5-0x00000000051A0000-0x00000000052E1000-memory.dmp

Filesize
1.3MB

Download
memory/2096-0-0x0000000073380000-0x0000000073A6E000-memory.dmp

Filesize
6.9MB

Download
memory/3524-11-0x0000000005BF0000-0x0000000005BF1000-memory.dmp

Filesize
4KB

Download
memory/3524-6-0x0000000000400000-0x00000000004D6000-memory.dmp

Filesize
856KB

Download
memory/3524-8-0x0000000073380000-0x0000000073A6E000-memory.dmp

Filesize
6.9MB

Download
memory/3524-18-0x00000000063A0000-0x00000000063A1000-memory.dmp

Filesize
4KB

Download
memory/3524-13-0x0000000005D10000-0x0000000005D11000-memory.dmp

Filesize
4KB

Download
memory/3524-12-0x0000000005C20000-0x0000000005C21000-memory.dmp

Filesize
4KB

Download
memory/3524-21-0x0000000006940000-0x0000000006941000-memory.dmp

Filesize
4KB

Download
memory/3800-27-0x0000000073380000-0x0000000073A6E000-memory.dmp

Filesize
6.9MB

Download
memory/3800-28-0x0000000000630000-0x0000000000631000-memory.dmp

Filesize
4KB

Download
memory/3800-32-0x0000000004EA0000-0x0000000004EA1000-memory.dmp

Filesize
4KB

Download
memory/4040-33-0x00000000045D0000-0x00000000045D1000-memory.dmp

Filesize
4KB

Download
memory/4040-40-0x0000000004D10000-0x0000000004D11000-memory.dmp

Filesize
4KB

Download