Analysis
- max time kernel
148s - max time network
145s - platform
windows10-2004_x64 - resource
win10v2004-20230703-en - resource tags
arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system - submitted
27/07/2023, 12:58
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
KALU.exe
Resource
win7-20230712-en
windows7-x64
9 signatures
150 seconds
Behavioral task
behavioral2
Sample
KALU.exe
Resource
win10v2004-20230703-en
windows10-2004-x64
9 signatures
150 seconds
General
- Target KALU.exe
- Size 286KB
- Sample230727-p7gsysfc4v
- SHA256 75a4391b44c120e8b7e67e7c8de8d2fc5bd5dd2e4f23c24ee49ada56491dfd23
- MD5 59dbc3eaecf075aca9d1df869c7caa03
- SHA1 5814f54df3716f2eace019e4830591b849b74f86
- SHA512 15288598cfaf69d20090964002ef249eb3b99d44d5ad6063b9684f82653debfda5b95712605ab71ec243bee948391cba6d5786a85474625e8c1c67dd6542d940
- SSDEEP 6144:vYa69J7ns4jLW380KTy4gkxCcAZDVzdLjwv60fgp:vY/BfjL2wTrWZDD6XIp
- MD5 SHA1 SHA512 SSDEEP
Score
7/10
Malware Config
Signatures
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-1498570331-2313266200-788959944-1000\Control Panel\International\Geo\Nation KALU.exe - Loads dropped DLL 1 IoCs
pid Process 2844 KALU.exe - Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-1498570331-2313266200-788959944-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\wgplueajenwsc = "C:\\Users\\Admin\\AppData\\Roaming\\fjsoxh\\dmvrb.exe \"C:\\Users\\Admin\\AppData\\Local\\Temp\\KALU.exe\"" KALU.exe - Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 2844 set thread context of 4164 2844 KALU.exe 88 - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Suspicious behavior: EnumeratesProcesses 58 IoCs
pid Process 4164 KALU.exe 4164 KALU.exe 4164 KALU.exe 4164 KALU.exe 4164 KALU.exe 4164 KALU.exe 4164 KALU.exe 4164 KALU.exe 4164 KALU.exe 4164 KALU.exe 4164 KALU.exe 4164 KALU.exe 4164 KALU.exe 4164 KALU.exe 4164 KALU.exe 4164 KALU.exe 4164 KALU.exe 4164 KALU.exe 4164 KALU.exe 4164 KALU.exe 4164 KALU.exe 4164 KALU.exe 4164 KALU.exe 4164 KALU.exe 4164 KALU.exe 4164 KALU.exe 4164 KALU.exe 4164 KALU.exe 4164 KALU.exe 4164 KALU.exe 4164 KALU.exe 4164 KALU.exe 4164 KALU.exe 4164 KALU.exe 4164 KALU.exe 4164 KALU.exe 4164 KALU.exe 4164 KALU.exe 4164 KALU.exe 4164 KALU.exe 4164 KALU.exe 4164 KALU.exe 4164 KALU.exe 4164 KALU.exe 4164 KALU.exe 4164 KALU.exe 4164 KALU.exe 4164 KALU.exe 4164 KALU.exe 4164 KALU.exe 4164 KALU.exe 4164 KALU.exe 4164 KALU.exe 4164 KALU.exe 4164 KALU.exe 4164 KALU.exe 4164 KALU.exe 4164 KALU.exe - Suspicious behavior: MapViewOfSection 1 IoCs
pid Process 2844 KALU.exe - Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 4164 KALU.exe - Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 2844 wrote to memory of 4164 2844 KALU.exe 88 PID 2844 wrote to memory of 4164 2844 KALU.exe 88 PID 2844 wrote to memory of 4164 2844 KALU.exe 88 PID 2844 wrote to memory of 4164 2844 KALU.exe 88
Processes
-
C:\Users\Admin\AppData\Local\Temp\KALU.exe"C:\Users\Admin\AppData\Local\Temp\KALU.exe"1⤵
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:2844 -
C:\Users\Admin\AppData\Local\Temp\KALU.exe"C:\Users\Admin\AppData\Local\Temp\KALU.exe"2⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4164
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
- Path C:\Users\Admin\AppData\Local\Temp\nsjCF96.tmp\vyrgei.dll
- Size 116KB
- SHA256 8eee7f27e2ca74c7411d478f983712da26d4cedd0a5f76e60f2dba17188a9095
- MD5 80493f190ffcd3713e608318bbb155aa
- SHA1 6b6a3d63292a469520c85b99b0febecde16c7f7e
- SHA512 617ea171d941c99af6fedd69faefcf096158d8ed1d4edad39d3d72b52d5325b24f14136d2171d50ef2016f4b1701428480903b57ff0f465e0ad445269e190a3c
- SSDEEP 3072:NXJiDIXJMkKVStoBT0Bxb51QrXboxgG95:N03BUxjQrXbox
- MD5 SHA1 SHA512 SSDEEP