smokeloader | 53bcd8239258dcbb10f9d3b6d057103c18fe3dd614c5809053426b01b741500d

General

Target

53bcd8239258dcbb10f9d3b6d057103c18fe3dd614c5809053426b01b741500d.exe
Size

270KB
MD5

49d7edc4f51e03058654bdaffdfe9992
SHA1

8f6831a72019f1361e1174e1dbaa00113a034618
SHA256

53bcd8239258dcbb10f9d3b6d057103c18fe3dd614c5809053426b01b741500d
SHA512

05795d5a19f24bd6a14a8942730e588d5a5ef5b186d3f65ed3821efeb9d0e29c49352867bf8d8d7bc933f3f5356b55d40dd2e39080847d564bf0c24afd7a36d7
SSDEEP

6144:SzrS9ZldfBpR/xV/tlTUEuA38xplKK9/2Y/Um4voF:ScdfBpR/xV/tuTa85K4JU

Score

10^/10

smokeloader pub1 aspackv2 backdoor discovery trojan

Malware Config

Extracted

Family

smokeloader

Botnet

pub1

Signatures

SmokeLoader
Modular backdoor trojan in use since 2014.
trojan backdoor smokeloader

ASPack v2.12-2.42 1 IoCs

Detects executables packed with ASPack v2.12-2.42

aspackv2

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\bkmRoO.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:

bkmRoO.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-1750093773-264148664-1320403265-1000\Control Panel\International\Geo\Nation bkmRoO.exe
Executes dropped EXE 1 IoCs

Processes:

bkmRoO.exe

pid process

3460 bkmRoO.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1750093773-264148664-1320403265-1000\Control Panel\International\Geo\Nation	bkmRoO.exe

pid	process
3460	bkmRoO.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

53bcd8239258dcbb10f9d3b6d057103c18fe3dd614c5809053426b01b741500d.exe

description	pid	process	target process
PID 944 set thread context of 2696	944	53bcd8239258dcbb10f9d3b6d057103c18fe3dd614c5809053426b01b741500d.exe	53bcd8239258dcbb10f9d3b6d057103c18fe3dd614c5809053426b01b741500d.exe

Drops file in Program Files directory 64 IoCs

Processes:

bkmRoO.exe

description	ioc	process
File opened for modification	C:\Program Files\Google\Chrome\Application\123.0.6312.106\chrome_pwa_launcher.exe	bkmRoO.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\javapackager.exe	bkmRoO.exe
File opened for modification	C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\OFFICE16\OLicenseHeartbeat.exe	bkmRoO.exe
File opened for modification	C:\Program Files (x86)\Google\Update\1.3.36.371\GoogleUpdateComRegisterShell64.exe	bkmRoO.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.WindowsAlarms_10.1906.2182.0_x64__8wekyb3d8bbwe\Time.exe	bkmRoO.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\jabswitch.exe	bkmRoO.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\MSOSYNC.EXE	bkmRoO.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\VPREVIEW.EXE	bkmRoO.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.Getstarted_8.2.22942.0_x64__8wekyb3d8bbwe\WhatsNew.Store.exe	bkmRoO.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\policytool.exe	bkmRoO.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\rmid.exe	bkmRoO.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.ZuneVideo_10.19071.19011.0_x64__8wekyb3d8bbwe\Video.UI.exe	bkmRoO.exe
File opened for modification	C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Office\Office16\DCF\filecompare.exe	bkmRoO.exe
File opened for modification	C:\Program Files\VideoLAN\VLC\uninstall.exe	bkmRoO.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.MixedReality.Portal_2000.19081.1301.0_x64__8wekyb3d8bbwe\MixedRealityPortal.exe	bkmRoO.exe
File opened for modification	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\createdump.exe	bkmRoO.exe
File opened for modification	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\createdump.exe	bkmRoO.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\serialver.exe	bkmRoO.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\GRAPH.EXE	bkmRoO.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.People_10.1902.633.0_x64__8wekyb3d8bbwe\PeopleApp.exe	bkmRoO.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\ADelRCP.exe	bkmRoO.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\Browser\WCChromeExtn\WCChromeNativeMessagingHost.exe	bkmRoO.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.XboxGamingOverlay_2.34.28001.0_x64__8wekyb3d8bbwe\GameBar.exe	bkmRoO.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\RdrCEF.exe	bkmRoO.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Integration\Integrator.exe	bkmRoO.exe
File opened for modification	C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Office\Office16\DCF\SPREADSHEETCOMPARE.EXE	bkmRoO.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.DesktopAppInstaller_1.0.30251.0_x64__8wekyb3d8bbwe\AppInstallerElevatedAppServiceClient.exe	bkmRoO.exe
File opened for modification	C:\Program Files (x86)\Google\Update\1.3.36.371\GoogleCrashHandler.exe	bkmRoO.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\jarsigner.exe	bkmRoO.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\MSQRY32.EXE	bkmRoO.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\SDXHelperBgt.exe	bkmRoO.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.XboxSpeechToTextOverlay_1.17.29001.0_x64__8wekyb3d8bbwe\SpeechToTextOverlay64-Retail.exe	bkmRoO.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\servertool.exe	bkmRoO.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\keytool.exe	bkmRoO.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\javah.exe	bkmRoO.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroTextExtractor.exe	bkmRoO.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\native2ascii.exe	bkmRoO.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.WindowsStore_11910.1002.5.0_x64__8wekyb3d8bbwe\WinStore.App.exe	bkmRoO.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\unpack200.exe	bkmRoO.exe
File opened for modification	C:\Program Files\Mozilla Firefox\private_browsing.exe	bkmRoO.exe
File opened for modification	C:\Program Files\VideoLAN\VLC\vlc-cache-gen.exe	bkmRoO.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.MicrosoftOfficeHub_18.1903.1152.0_x64__8wekyb3d8bbwe\LocalBridge.exe	bkmRoO.exe
File opened for modification	C:\Program Files\7-Zip\7zFM.exe	bkmRoO.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\jrunscript.exe	bkmRoO.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\jsadebugd.exe	bkmRoO.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\jre\bin\servertool.exe	bkmRoO.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.Xbox.TCUI_1.23.28002.0_x64__8wekyb3d8bbwe\TCUI-App.exe	bkmRoO.exe
File opened for modification	C:\Program Files\7-Zip\7z.exe	bkmRoO.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\tnameserv.exe	bkmRoO.exe
File opened for modification	C:\Program Files\Mozilla Firefox\updater.exe	bkmRoO.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.Wallet_2.4.18324.0_x64__8wekyb3d8bbwe\Microsoft.Wallet.exe	bkmRoO.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\idlj.exe	bkmRoO.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\ADDINS\Microsoft Power Query for Excel Integrated\bin\Microsoft.Mashup.Container.exe	bkmRoO.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.WindowsMaps_5.1906.1972.0_x64__8wekyb3d8bbwe\Maps.exe	bkmRoO.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.ZuneMusic_10.19071.19011.0_x64__8wekyb3d8bbwe\Music.UI.exe	bkmRoO.exe
File opened for modification	C:\Program Files (x86)\Google\Update\Download\{8A69D345-D564-463C-AFF1-A69D9E530F96}\123.0.6312.106\chrome_installer.exe	bkmRoO.exe
File opened for modification	C:\Program Files (x86)\Google\Update\Install\{04733A16-1E1C-4429-8CB3-9E461F0CABA4}\chrome_installer.exe	bkmRoO.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\pack200.exe	bkmRoO.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Integration\Addons\OneDriveSetup.exe	bkmRoO.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.ScreenSketch_10.1907.2471.0_x64__8wekyb3d8bbwe\ScreenSketch.exe	bkmRoO.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.SkypeApp_14.53.77.0_x64__kzf8qxf38zg5c\SkypeBackgroundHost.exe	bkmRoO.exe
File opened for modification	C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\Source Engine\OSE.EXE	bkmRoO.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\javac.exe	bkmRoO.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\jdeps.exe	bkmRoO.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

Processes:

53bcd8239258dcbb10f9d3b6d057103c18fe3dd614c5809053426b01b741500d.exebkmRoO.execmd.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	53bcd8239258dcbb10f9d3b6d057103c18fe3dd614c5809053426b01b741500d.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	bkmRoO.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Checks SCSI registry key(s) 3 TTPs 3 IoCs

SCSI information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Processes:

53bcd8239258dcbb10f9d3b6d057103c18fe3dd614c5809053426b01b741500d.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	53bcd8239258dcbb10f9d3b6d057103c18fe3dd614c5809053426b01b741500d.exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	53bcd8239258dcbb10f9d3b6d057103c18fe3dd614c5809053426b01b741500d.exe
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	53bcd8239258dcbb10f9d3b6d057103c18fe3dd614c5809053426b01b741500d.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

53bcd8239258dcbb10f9d3b6d057103c18fe3dd614c5809053426b01b741500d.exebkmRoO.exe

description	pid	process	target process
PID 944 wrote to memory of 3460	944	53bcd8239258dcbb10f9d3b6d057103c18fe3dd614c5809053426b01b741500d.exe	bkmRoO.exe
PID 944 wrote to memory of 3460	944	53bcd8239258dcbb10f9d3b6d057103c18fe3dd614c5809053426b01b741500d.exe	bkmRoO.exe
PID 944 wrote to memory of 3460	944	53bcd8239258dcbb10f9d3b6d057103c18fe3dd614c5809053426b01b741500d.exe	bkmRoO.exe
PID 944 wrote to memory of 2696	944	53bcd8239258dcbb10f9d3b6d057103c18fe3dd614c5809053426b01b741500d.exe	53bcd8239258dcbb10f9d3b6d057103c18fe3dd614c5809053426b01b741500d.exe
PID 944 wrote to memory of 2696	944	53bcd8239258dcbb10f9d3b6d057103c18fe3dd614c5809053426b01b741500d.exe	53bcd8239258dcbb10f9d3b6d057103c18fe3dd614c5809053426b01b741500d.exe
PID 944 wrote to memory of 2696	944	53bcd8239258dcbb10f9d3b6d057103c18fe3dd614c5809053426b01b741500d.exe	53bcd8239258dcbb10f9d3b6d057103c18fe3dd614c5809053426b01b741500d.exe
PID 944 wrote to memory of 2696	944	53bcd8239258dcbb10f9d3b6d057103c18fe3dd614c5809053426b01b741500d.exe	53bcd8239258dcbb10f9d3b6d057103c18fe3dd614c5809053426b01b741500d.exe
PID 944 wrote to memory of 2696	944	53bcd8239258dcbb10f9d3b6d057103c18fe3dd614c5809053426b01b741500d.exe	53bcd8239258dcbb10f9d3b6d057103c18fe3dd614c5809053426b01b741500d.exe
PID 944 wrote to memory of 2696	944	53bcd8239258dcbb10f9d3b6d057103c18fe3dd614c5809053426b01b741500d.exe	53bcd8239258dcbb10f9d3b6d057103c18fe3dd614c5809053426b01b741500d.exe
PID 3460 wrote to memory of 3500	3460	bkmRoO.exe	cmd.exe
PID 3460 wrote to memory of 3500	3460	bkmRoO.exe	cmd.exe
PID 3460 wrote to memory of 3500	3460	bkmRoO.exe	cmd.exe

C:\Users\Admin\AppData\Local\Temp\53bcd8239258dcbb10f9d3b6d057103c18fe3dd614c5809053426b01b741500d.exe
"C:\Users\Admin\AppData\Local\Temp\53bcd8239258dcbb10f9d3b6d057103c18fe3dd614c5809053426b01b741500d.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:944

C:\Users\Admin\AppData\Local\Temp\bkmRoO.exe
C:\Users\Admin\AppData\Local\Temp\bkmRoO.exe
2⤵
- Checks computer location settings
- Executes dropped EXE
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3460

C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\4c13363b.bat" "
3⤵
- System Location Discovery: System Language Discovery
PID:3500

C:\Users\Admin\AppData\Local\Temp\53bcd8239258dcbb10f9d3b6d057103c18fe3dd614c5809053426b01b741500d.exe
"C:\Users\Admin\AppData\Local\Temp\53bcd8239258dcbb10f9d3b6d057103c18fe3dd614c5809053426b01b741500d.exe"
2⤵
- Checks SCSI registry key(s)
PID:2696

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

3

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\A4F1OTIC\k2[1].rar

Filesize
4B

MD5
d3b07384d113edec49eaa6238ad5ff00

SHA1
f1d2d2f924e986ac86fdf7b36c94bcdf32beec15

SHA256
b5bb9d8014a0f9b1d61e21e796d78dccdf1352f23cd32812f4850b878ae4944c

SHA512
0cf9180a764aba863a67b6d72f0918bc131c6772642cb2dce5a34f0a702f9470ddc2bf125c12198b1995c233c34b4afd346c54a2334c350a948a51b6e8b4e6b6

Download Submit
C:\Users\Admin\AppData\Local\Temp\4c13363b.bat

Filesize
187B

MD5
963597da807bd3d68a02cd3f59307f0c

SHA1
65a88e908904a6e60044946669081b43f0899415

SHA256
0444e3bebf81ef1fdad51114d49a9432daea4e9353b928295fda9347271ebd7d

SHA512
6269bd14d9e825053fa956eda7e52f06efd95279d5226bf05dbaef32d35f59a14aceab85c1228f6d7f5e399e4f456afce4b3283696c68fe7613a70f9ef705f42

Download Submit
C:\Users\Admin\AppData\Local\Temp\6A0A14C6.exe

Filesize
4B

MD5
20879c987e2f9a916e578386d499f629

SHA1
c7b33ddcc42361fdb847036fc07e880b81935d5d

SHA256
9f2981a7cc4d40a2a409dc895de64253acd819d7c0011c8e80b86fe899464e31

SHA512
bcdde1625364dd6dd143b45bdcec8d59cf8982aff33790d390b839f3869e0e815684568b14b555a596d616252aeeaa98dac2e6e551c9095ea11a575ff25ff84f

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

Filesize
15KB

MD5
f7d21de5c4e81341eccd280c11ddcc9a

SHA1
d4e9ef10d7685d491583c6fa93ae5d9105d815bd

SHA256
4485df22c627fa0bb899d79aa6ff29bc5be1dbc3caa2b7a490809338d54b7794

SHA512
e4553b86b083996038bacfb979ad0b86f578f95185d8efac34a77f6cc73e491d4f70e1449bbc9eb1d62f430800c1574101b270e1cb0eeed43a83049a79b636a3

Download Submit
memory/944-0-0x0000000000400000-0x0000000000470000-memory.dmp

Filesize
448KB

Download
memory/944-15-0x0000000002070000-0x0000000002079000-memory.dmp

Filesize
36KB

Download
memory/944-14-0x0000000000660000-0x0000000000760000-memory.dmp

Filesize
1024KB

Download
memory/944-18-0x0000000000400000-0x0000000000470000-memory.dmp

Filesize
448KB

Download
memory/2696-17-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2696-19-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/3460-5-0x0000000000EA0000-0x0000000000EA9000-memory.dmp

Filesize
36KB

Download
memory/3460-51-0x0000000000EA0000-0x0000000000EA9000-memory.dmp

Filesize
36KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads