upatre | be91b041933508206e8b701af5ba0505a043f128f58487e85d70076c63c81361

Analysis

max time kernel
154s
max time network
145s
platform
windows10-2004_x64
resource
win10v2004-en-20220113
submitted
19-02-2022 19:22

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General

Target

be91b041933508206e8b701af5ba0505a043f128f58487e85d70076c63c81361.exe
Size

271KB
MD5

936cd80874b5b6ff61a4b032fda7b952
SHA1

4cb82bf92aa5dd75a2550c762cadd1734af560ab
SHA256

be91b041933508206e8b701af5ba0505a043f128f58487e85d70076c63c81361
SHA512

6c272365437e9de566e74f29c7cd500e551fb8414b961cbe89375be9fc61303fedfe1bb9217a55b75d4c8405540840fc54e46795831019e56f29fe809fba05fc

Score

10^/10

upatre downloader

Malware Config

Signatures

Upatre
Upatre is a generic malware downloader.
downloader upatre

Executes dropped EXE 1 IoCs

pid	Process
4656	szgfw.exe

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-1-5-21-1346565761-3498240568-4147300184-1000\Control Panel\International\Geo\Nation	be91b041933508206e8b701af5ba0505a043f128f58487e85d70076c63c81361.exe

Drops file in Windows directory 6 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SoftwareDistribution\DataStore\DataStore.edb	svchost.exe
File opened for modification	C:\Windows\SoftwareDistribution\DataStore\DataStore.jfm	svchost.exe
File opened for modification	C:\Windows\SoftwareDistribution\ReportingEvents.log	svchost.exe
File opened for modification	C:\Windows\WindowsUpdate.log	svchost.exe
File opened for modification	C:\Windows\SoftwareDistribution\DataStore\Logs\edb.chk	svchost.exe
File opened for modification	C:\Windows\SoftwareDistribution\DataStore\Logs\edb.log	svchost.exe

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

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeShutdownPrivilege	1256	svchost.exe
Token: SeCreatePagefilePrivilege	1256	svchost.exe
Token: SeShutdownPrivilege	1256	svchost.exe
Token: SeCreatePagefilePrivilege	1256	svchost.exe
Token: SeShutdownPrivilege	1256	svchost.exe
Token: SeCreatePagefilePrivilege	1256	svchost.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 420 wrote to memory of 4656	420	be91b041933508206e8b701af5ba0505a043f128f58487e85d70076c63c81361.exe	87
PID 420 wrote to memory of 4656	420	be91b041933508206e8b701af5ba0505a043f128f58487e85d70076c63c81361.exe	87
PID 420 wrote to memory of 4656	420	be91b041933508206e8b701af5ba0505a043f128f58487e85d70076c63c81361.exe	87

C:\Users\Admin\AppData\Local\Temp\be91b041933508206e8b701af5ba0505a043f128f58487e85d70076c63c81361.exe
"C:\Users\Admin\AppData\Local\Temp\be91b041933508206e8b701af5ba0505a043f128f58487e85d70076c63c81361.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:420
- C:\Users\Admin\AppData\Local\Temp\szgfw.exe
  "C:\Users\Admin\AppData\Local\Temp\szgfw.exe"
  2⤵
  - Executes dropped EXE
  PID:4656

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k netsvcs -p -s wuauserv
1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
PID:1256

Network

MITRE ATT&CK Enterprise v6

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

memory/420-133-0x0000000000480000-0x0000000000481000-memory.dmp

Filesize
4KB

Download
memory/1256-130-0x000001BA97170000-0x000001BA97180000-memory.dmp

Filesize
64KB

Download
memory/1256-131-0x000001BA97820000-0x000001BA97830000-memory.dmp

Filesize
64KB

Download
memory/1256-132-0x000001BA99EF0000-0x000001BA99EF4000-memory.dmp

Filesize
16KB

Download