upatre | f855ae77f9eae20b44e1a9df1cc8f78d5f5e886d70138ca76d624b73844b998b

Analysis

max time kernel
160s
max time network
145s
platform
windows10-2004_x64
resource
win10v2004-en-20220113
submitted
19-02-2022 18:43

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General

Target

f855ae77f9eae20b44e1a9df1cc8f78d5f5e886d70138ca76d624b73844b998b.exe
Size

35KB
MD5

4634508e493e2caa4e329c9757c9ad57
SHA1

b409510960c04881d234065e1c3267686e70916b
SHA256

f855ae77f9eae20b44e1a9df1cc8f78d5f5e886d70138ca76d624b73844b998b
SHA512

708083daf894720de5c0e3d2c1a738d5da09704b8a2e2b5b0d418f99503b161023f2521d53b34c91881f2a90d339410cb851f6d550fcb54cb310b74c195ad0d6

Score

10^/10

upatre downloader

Malware Config

Signatures

Upatre
Upatre is a generic malware downloader.
downloader upatre

Executes dropped EXE 1 IoCs

pid	Process
4368	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	f855ae77f9eae20b44e1a9df1cc8f78d5f5e886d70138ca76d624b73844b998b.exe

Drops file in Windows directory 6 IoCs

description	ioc	Process
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
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

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	2984	svchost.exe
Token: SeCreatePagefilePrivilege	2984	svchost.exe
Token: SeShutdownPrivilege	2984	svchost.exe
Token: SeCreatePagefilePrivilege	2984	svchost.exe
Token: SeShutdownPrivilege	2984	svchost.exe
Token: SeCreatePagefilePrivilege	2984	svchost.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 448 wrote to memory of 4368	448	f855ae77f9eae20b44e1a9df1cc8f78d5f5e886d70138ca76d624b73844b998b.exe	82
PID 448 wrote to memory of 4368	448	f855ae77f9eae20b44e1a9df1cc8f78d5f5e886d70138ca76d624b73844b998b.exe	82
PID 448 wrote to memory of 4368	448	f855ae77f9eae20b44e1a9df1cc8f78d5f5e886d70138ca76d624b73844b998b.exe	82

C:\Users\Admin\AppData\Local\Temp\f855ae77f9eae20b44e1a9df1cc8f78d5f5e886d70138ca76d624b73844b998b.exe
"C:\Users\Admin\AppData\Local\Temp\f855ae77f9eae20b44e1a9df1cc8f78d5f5e886d70138ca76d624b73844b998b.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:448
- C:\Users\Admin\AppData\Local\Temp\szgfw.exe
  "C:\Users\Admin\AppData\Local\Temp\szgfw.exe"
  2⤵
  - Executes dropped EXE
  PID:4368

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:2984

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/448-130-0x00000000006A0000-0x00000000006A1000-memory.dmp

Filesize
4KB

Download
memory/2984-133-0x000001EB7F560000-0x000001EB7F570000-memory.dmp

Filesize
64KB

Download
memory/2984-134-0x000001EB7FB20000-0x000001EB7FB30000-memory.dmp

Filesize
64KB

Download
memory/2984-135-0x000001EB7FE70000-0x000001EB7FE74000-memory.dmp

Filesize
16KB

Download