fc592b5fecf2141694ce28a79d7bbc1afb2ea8bc9eb80feb6bf0c218e8f8b81c

Analysis

max time kernel
140s
max time network
102s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
21/05/2024, 13:25

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General

Target

2024-05-21_091466242bd0c382222bed589183ab61_bkransomware_wapomi.exe
Size

215KB
MD5

091466242bd0c382222bed589183ab61
SHA1

efa05495f51372c50ced5c8279d8ad19eae6855a
SHA256

fc592b5fecf2141694ce28a79d7bbc1afb2ea8bc9eb80feb6bf0c218e8f8b81c
SHA512

eb7e769a8dbe7c2718a89cb63e90fe0511b0faacb0e9bf7342e58b1b0e23bdce9a97bf1aee0c45c5e1b894b1d210598b99666cbbf45c9f8d0244f3dbe07cd5e3
SSDEEP

3072:R666SmGgfYMSLpt690O4EHIsxeqvrvuSUdybQHoAw3MVDdVY3KiGCH:R2SSI60OhHLjv1nt3KD

Score

9^/10

aspackv2

Malware Config

Signatures

Detects executables packed with ASPack 3 IoCs

resource	yara_rule
behavioral2/memory/2740-4-0x0000000000A60000-0x0000000000A69000-memory.dmp	INDICATOR_EXE_Packed_ASPack
behavioral2/files/0x0008000000022f51-3.dat	INDICATOR_EXE_Packed_ASPack
behavioral2/memory/2740-47-0x0000000000A60000-0x0000000000A69000-memory.dmp	INDICATOR_EXE_Packed_ASPack

ASPack v2.12-2.42 1 IoCs

Detects executables packed with ASPack v2.12-2.42

aspackv2

resource	yara_rule
behavioral2/files/0x0008000000022f51-3.dat	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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation	yssPyJ.exe

Executes dropped EXE 1 IoCs

pid	Process
2740	yssPyJ.exe

Drops file in Program Files directory 64 IoCs

description	ioc	Process
File opened for modification	C:\Program Files\Java\jre-1.8\bin\keytool.exe	yssPyJ.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\XLICONS.EXE	yssPyJ.exe
File opened for modification	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\createdump.exe	yssPyJ.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\jabswitch.exe	yssPyJ.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\java.exe	yssPyJ.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\GRAPH.EXE	yssPyJ.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.MixedReality.Portal_2000.19081.1301.0_x64__8wekyb3d8bbwe\MixedRealityPortal.exe	yssPyJ.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\javah.exe	yssPyJ.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\serialver.exe	yssPyJ.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\VPREVIEW.EXE	yssPyJ.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.DesktopAppInstaller_1.0.30251.0_x64__8wekyb3d8bbwe\AppInstallerElevatedAppServiceClient.exe	yssPyJ.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.MicrosoftOfficeHub_18.1903.1152.0_x64__8wekyb3d8bbwe\LocalBridge.exe	yssPyJ.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.Wallet_2.4.18324.0_x64__8wekyb3d8bbwe\Microsoft.Wallet.exe	yssPyJ.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.YourPhone_0.19051.7.0_x64__8wekyb3d8bbwe\YourPhone.exe	yssPyJ.exe
File opened for modification	C:\Program Files (x86)\Google\Update\1.3.36.151\GoogleUpdateCore.exe	yssPyJ.exe
File opened for modification	C:\Program Files\7-Zip\7z.exe	yssPyJ.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\jre\bin\rmiregistry.exe	yssPyJ.exe
File opened for modification	C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Office\Office16\DCF\SPREADSHEETCOMPARE.EXE	yssPyJ.exe
File opened for modification	C:\Program Files (x86)\Google\Update\1.3.36.151\GoogleUpdateSetup.exe	yssPyJ.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\javac.exe	yssPyJ.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\msoia.exe	yssPyJ.exe
File opened for modification	C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX64\Microsoft Analysis Services\AS OLEDB\140\SQLDumper.exe	yssPyJ.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\javafxpackager.exe	yssPyJ.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\msotd.exe	yssPyJ.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\jjs.exe	yssPyJ.exe
File opened for modification	C:\Program Files\Mozilla Firefox\maintenanceservice.exe	yssPyJ.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\javadoc.exe	yssPyJ.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\jsadebugd.exe	yssPyJ.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\ktab.exe	yssPyJ.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\Wordconv.exe	yssPyJ.exe
File opened for modification	C:\Program Files\dotnet\dotnet.exe	yssPyJ.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\java-rmi.exe	yssPyJ.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\native2ascii.exe	yssPyJ.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\jre\bin\klist.exe	yssPyJ.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\ssvagent.exe	yssPyJ.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.SkypeApp_14.53.77.0_x64__kzf8qxf38zg5c\SkypeApp.exe	yssPyJ.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.SkypeApp_14.53.77.0_x64__kzf8qxf38zg5c\SkypeBridge\SkypeBridge.exe	yssPyJ.exe
File opened for modification	C:\Program Files\7-Zip\7zG.exe	yssPyJ.exe
File opened for modification	C:\Program Files\Google\Chrome\Application\110.0.5481.104\elevation_service.exe	yssPyJ.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\idlj.exe	yssPyJ.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.Windows.Photos_2019.19071.12548.0_x64__8wekyb3d8bbwe\Microsoft.Photos.exe	yssPyJ.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Client\AppVLP.exe	yssPyJ.exe
File opened for modification	C:\Program Files\VideoLAN\VLC\vlc-cache-gen.exe	yssPyJ.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.WindowsFeedbackHub_1.1907.3152.0_x64__8wekyb3d8bbwe\PilotshubApp.exe	yssPyJ.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\servertool.exe	yssPyJ.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\jre\bin\unpack200.exe	yssPyJ.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\ORGCHART.EXE	yssPyJ.exe
File opened for modification	C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\OFFICE16\MSOXMLED.EXE	yssPyJ.exe
File opened for modification	C:\Program Files\Mozilla Firefox\maintenanceservice_installer.exe	yssPyJ.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\jre\bin\orbd.exe	yssPyJ.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\jre\bin\policytool.exe	yssPyJ.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\jre\bin\jjs.exe	yssPyJ.exe
File opened for modification	C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Office\Office16\DCF\Common.ShowHelp.exe	yssPyJ.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.MixedReality.Portal_2000.19081.1301.0_x64__8wekyb3d8bbwe\MixedRealityPortal.Brokered.exe	yssPyJ.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\FullTrustNotifier.exe	yssPyJ.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\jarsigner.exe	yssPyJ.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\jre\bin\javaws.exe	yssPyJ.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\xjc.exe	yssPyJ.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.WindowsSoundRecorder_10.1906.1972.0_x64__8wekyb3d8bbwe\SoundRec.exe	yssPyJ.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Client\AppVDllSurrogate32.exe	yssPyJ.exe
File opened for modification	C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\Smart Tag\SmartTagInstall.exe	yssPyJ.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.SkypeApp_14.53.77.0_x64__kzf8qxf38zg5c\SkypeBackgroundHost.exe	yssPyJ.exe
File opened for modification	C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\HxAccounts.exe	yssPyJ.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\rmic.exe	yssPyJ.exe

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

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4408 wrote to memory of 2740	4408	2024-05-21_091466242bd0c382222bed589183ab61_bkransomware_wapomi.exe	84
PID 4408 wrote to memory of 2740	4408	2024-05-21_091466242bd0c382222bed589183ab61_bkransomware_wapomi.exe	84
PID 4408 wrote to memory of 2740	4408	2024-05-21_091466242bd0c382222bed589183ab61_bkransomware_wapomi.exe	84
PID 2740 wrote to memory of 1768	2740	yssPyJ.exe	88
PID 2740 wrote to memory of 1768	2740	yssPyJ.exe	88
PID 2740 wrote to memory of 1768	2740	yssPyJ.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-05-21_091466242bd0c382222bed589183ab61_bkransomware_wapomi.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-21_091466242bd0c382222bed589183ab61_bkransomware_wapomi.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:4408
- C:\Users\Admin\AppData\Local\Temp\yssPyJ.exe
  C:\Users\Admin\AppData\Local\Temp\yssPyJ.exe
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - Drops file in Program Files directory
  - Suspicious use of WriteProcessMemory
  PID:2740
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\3ae853fc.bat" "
    3⤵
    PID:1768

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
4B

MD5
d3b07384d113edec49eaa6238ad5ff00

SHA1
f1d2d2f924e986ac86fdf7b36c94bcdf32beec15

SHA256
b5bb9d8014a0f9b1d61e21e796d78dccdf1352f23cd32812f4850b878ae4944c

SHA512
0cf9180a764aba863a67b6d72f0918bc131c6772642cb2dce5a34f0a702f9470ddc2bf125c12198b1995c233c34b4afd346c54a2334c350a948a51b6e8b4e6b6

Download Submit
C:\Users\Admin\AppData\Local\Temp\13601E06.exe

Filesize
4B

MD5
20879c987e2f9a916e578386d499f629

SHA1
c7b33ddcc42361fdb847036fc07e880b81935d5d

SHA256
9f2981a7cc4d40a2a409dc895de64253acd819d7c0011c8e80b86fe899464e31

SHA512
bcdde1625364dd6dd143b45bdcec8d59cf8982aff33790d390b839f3869e0e815684568b14b555a596d616252aeeaa98dac2e6e551c9095ea11a575ff25ff84f

Download Submit
C:\Users\Admin\AppData\Local\Temp\3ae853fc.bat

Filesize
187B

MD5
68c8774e54ab7a795ae7c955930e8279

SHA1
d0e52988aef8db08f1815b218a3dbd2831a170ce

SHA256
b64726827f64bc21495d4c233c0e2321a230cd4eb2b75c6c1a9b360ad3d70ed9

SHA512
55768a80c0714ad4f00dafe89b1147f61c61140e54dca5af13c8eeaf3fe1d63547e53a933f5641c2689228d33e65f9c41eee103861edb23d2a4447fd19b28575

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

Filesize
15KB

MD5
56b2c3810dba2e939a8bb9fa36d3cf96

SHA1
99ee31cd4b0d6a4b62779da36e0eeecdd80589fc

SHA256
4354970ccc7cd6bb16318f132c34f6a1b3d5c2ea7ff53e1c9271905527f2db07

SHA512
27812a9a034d7bd2ca73b337ae9e0b6dc79c38cfd1a2c6ac9d125d3cc8fa563c401a40d22155811d5054e5baa8cf8c8e7e03925f25fa856a9ba9dea708d15b4e

Download Submit
memory/2740-4-0x0000000000A60000-0x0000000000A69000-memory.dmp

Filesize
36KB

Download
memory/2740-47-0x0000000000A60000-0x0000000000A69000-memory.dmp

Filesize
36KB

Download
memory/4408-0-0x0000000000110000-0x000000000014C000-memory.dmp

Filesize
240KB

Download
memory/4408-7-0x0000000000110000-0x000000000014C000-memory.dmp

Filesize
240KB

Download