92eca52aaecf0081ff4b9291632b0dc438c301af47ea30d54e8d91d25a7ad8a2

Analysis

max time kernel
141s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
24-11-2022 22:09

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General

Target

92eca52aaecf0081ff4b9291632b0dc438c301af47ea30d54e8d91d25a7ad8a2.exe
Size

233KB
MD5

a3e0c2ed8c7c5d4cac4cd8f7f6da8fde
SHA1

f1d13115a55702fa8a536c042a1872e6c3105b5f
SHA256

92eca52aaecf0081ff4b9291632b0dc438c301af47ea30d54e8d91d25a7ad8a2
SHA512

0d7d9fe6f9130b7f26d4ca2553cc319c72dc0463d07e2b085edd376338153721a56f59aa13f77f994a1c898f810c95e2758f94530c7020a022d5acf59d565c73
SSDEEP

6144:rSgCxWRq4OQek7opB4cEM0oYO76SFycdR:rUU3584G0i6SIcdR

Score

8^/10

persistence

Malware Config

Signatures

Executes dropped EXE 1 IoCs

Processes:

steamwebhelper.exe

pid process

1564 steamwebhelper.exe

pid	process
1564	steamwebhelper.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

Processes:

92eca52aaecf0081ff4b9291632b0dc438c301af47ea30d54e8d91d25a7ad8a2.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation	92eca52aaecf0081ff4b9291632b0dc438c301af47ea30d54e8d91d25a7ad8a2.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

92eca52aaecf0081ff4b9291632b0dc438c301af47ea30d54e8d91d25a7ad8a2.exesteamwebhelper.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\steamwebhelper = "C:\\Users\\Admin\\AppData\\Roaming\\steamwebhelper2\\steamwebhelper.exe"	92eca52aaecf0081ff4b9291632b0dc438c301af47ea30d54e8d91d25a7ad8a2.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\steamwebhelper = "C:\\Users\\Admin\\AppData\\Roaming\\steamwebhelper2\\steamwebhelper.exe"	steamwebhelper.exe

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

System Information Discovery
T1082
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

92eca52aaecf0081ff4b9291632b0dc438c301af47ea30d54e8d91d25a7ad8a2.exesteamwebhelper.exe

pid process

3416 92eca52aaecf0081ff4b9291632b0dc438c301af47ea30d54e8d91d25a7ad8a2.exe
1564 steamwebhelper.exe

pid	process
3416	92eca52aaecf0081ff4b9291632b0dc438c301af47ea30d54e8d91d25a7ad8a2.exe
1564	steamwebhelper.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

92eca52aaecf0081ff4b9291632b0dc438c301af47ea30d54e8d91d25a7ad8a2.exesteamwebhelper.exe

description	pid	process
Token: SeDebugPrivilege	3416	92eca52aaecf0081ff4b9291632b0dc438c301af47ea30d54e8d91d25a7ad8a2.exe
Token: SeDebugPrivilege	1564	steamwebhelper.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

92eca52aaecf0081ff4b9291632b0dc438c301af47ea30d54e8d91d25a7ad8a2.exe

description	pid	process	target process
PID 3416 wrote to memory of 1564	3416	92eca52aaecf0081ff4b9291632b0dc438c301af47ea30d54e8d91d25a7ad8a2.exe	steamwebhelper.exe
PID 3416 wrote to memory of 1564	3416	92eca52aaecf0081ff4b9291632b0dc438c301af47ea30d54e8d91d25a7ad8a2.exe	steamwebhelper.exe
PID 3416 wrote to memory of 1564	3416	92eca52aaecf0081ff4b9291632b0dc438c301af47ea30d54e8d91d25a7ad8a2.exe	steamwebhelper.exe

C:\Users\Admin\AppData\Local\Temp\92eca52aaecf0081ff4b9291632b0dc438c301af47ea30d54e8d91d25a7ad8a2.exe
"C:\Users\Admin\AppData\Local\Temp\92eca52aaecf0081ff4b9291632b0dc438c301af47ea30d54e8d91d25a7ad8a2.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3416

C:\Users\Admin\AppData\Roaming\steamwebhelper2\steamwebhelper.exe
"C:\Users\Admin\AppData\Roaming\steamwebhelper2\steamwebhelper.exe"
2⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1564

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\steamwebhelper2\steamwebhelper.exe
Filesize
233KB

MD5
a3e0c2ed8c7c5d4cac4cd8f7f6da8fde

SHA1
f1d13115a55702fa8a536c042a1872e6c3105b5f

SHA256
92eca52aaecf0081ff4b9291632b0dc438c301af47ea30d54e8d91d25a7ad8a2

SHA512
0d7d9fe6f9130b7f26d4ca2553cc319c72dc0463d07e2b085edd376338153721a56f59aa13f77f994a1c898f810c95e2758f94530c7020a022d5acf59d565c73

Download Submit
C:\Users\Admin\AppData\Roaming\steamwebhelper2\steamwebhelper.exe
Filesize
233KB

MD5
a3e0c2ed8c7c5d4cac4cd8f7f6da8fde

SHA1
f1d13115a55702fa8a536c042a1872e6c3105b5f

SHA256
92eca52aaecf0081ff4b9291632b0dc438c301af47ea30d54e8d91d25a7ad8a2

SHA512
0d7d9fe6f9130b7f26d4ca2553cc319c72dc0463d07e2b085edd376338153721a56f59aa13f77f994a1c898f810c95e2758f94530c7020a022d5acf59d565c73

Download Submit
memory/1564-136-0x0000000000000000-mapping.dmp

Download
memory/3416-132-0x0000000000220000-0x0000000000260000-memory.dmp

Filesize
256KB

Download
memory/3416-133-0x00000000055B0000-0x0000000005B54000-memory.dmp

Filesize
5.6MB

Download
memory/3416-134-0x00000000050E0000-0x0000000005172000-memory.dmp

Filesize
584KB

Download
memory/3416-135-0x00000000050D0000-0x00000000050DA000-memory.dmp

Filesize
40KB

Download