989d185b44a90c517cb91880b18ececd8c9f4391245f5572d7cb32b95dd11d36

Analysis

max time kernel
167s
max time network
182s
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 21:52

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

989d185b44a90c517cb91880b18ececd8c9f4391245f5572d7cb32b95dd11d36.exe
Size

492KB
MD5

7b975db0eab44098894af51289d1de3e
SHA1

e50cb9e8158d0cfdb1e548408c2429b2bb58e441
SHA256

989d185b44a90c517cb91880b18ececd8c9f4391245f5572d7cb32b95dd11d36
SHA512

996144a67a882505f96d64dec4690d074d420e9103f3a42eceb0bacdd96439254f9eaa38f6d9d3e54c2470ff33e26cb0274e419028c7d5dcb0ab0b204cf36caa
SSDEEP

6144:1xrODPXAkZEOp3iDvrpyd//9SAr5dbCRmywzc/wFnXKER0u+GIIIIIIIhIIIIIIA:1xrZ7pOTldbCRCikm5Q

Score

8^/10

persistence

Malware Config

Signatures

Executes dropped EXE 1 IoCs

Processes:

steamwebhelper.exe

pid process

4320 steamwebhelper.exe

pid	process
4320	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:

989d185b44a90c517cb91880b18ececd8c9f4391245f5572d7cb32b95dd11d36.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation	989d185b44a90c517cb91880b18ececd8c9f4391245f5572d7cb32b95dd11d36.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

989d185b44a90c517cb91880b18ececd8c9f4391245f5572d7cb32b95dd11d36.exesteamwebhelper.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\steamwebhelper = "C:\\Users\\Admin\\AppData\\Roaming\\steamwebhelper2\\steamwebhelper.exe"	989d185b44a90c517cb91880b18ececd8c9f4391245f5572d7cb32b95dd11d36.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\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:

989d185b44a90c517cb91880b18ececd8c9f4391245f5572d7cb32b95dd11d36.exesteamwebhelper.exe

pid process

4772 989d185b44a90c517cb91880b18ececd8c9f4391245f5572d7cb32b95dd11d36.exe
4320 steamwebhelper.exe

pid	process
4772	989d185b44a90c517cb91880b18ececd8c9f4391245f5572d7cb32b95dd11d36.exe
4320	steamwebhelper.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

989d185b44a90c517cb91880b18ececd8c9f4391245f5572d7cb32b95dd11d36.exesteamwebhelper.exe

description	pid	process
Token: SeDebugPrivilege	4772	989d185b44a90c517cb91880b18ececd8c9f4391245f5572d7cb32b95dd11d36.exe
Token: SeDebugPrivilege	4320	steamwebhelper.exe

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

989d185b44a90c517cb91880b18ececd8c9f4391245f5572d7cb32b95dd11d36.exe

description	pid	process	target process
PID 4772 wrote to memory of 4320	4772	989d185b44a90c517cb91880b18ececd8c9f4391245f5572d7cb32b95dd11d36.exe	steamwebhelper.exe
PID 4772 wrote to memory of 4320	4772	989d185b44a90c517cb91880b18ececd8c9f4391245f5572d7cb32b95dd11d36.exe	steamwebhelper.exe

C:\Users\Admin\AppData\Local\Temp\989d185b44a90c517cb91880b18ececd8c9f4391245f5572d7cb32b95dd11d36.exe
"C:\Users\Admin\AppData\Local\Temp\989d185b44a90c517cb91880b18ececd8c9f4391245f5572d7cb32b95dd11d36.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4772

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:4320

Network

MITRE ATT&CK Enterprise 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

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Roaming\steamwebhelper2\steamwebhelper.exe

Filesize
492KB

MD5
7b975db0eab44098894af51289d1de3e

SHA1
e50cb9e8158d0cfdb1e548408c2429b2bb58e441

SHA256
989d185b44a90c517cb91880b18ececd8c9f4391245f5572d7cb32b95dd11d36

SHA512
996144a67a882505f96d64dec4690d074d420e9103f3a42eceb0bacdd96439254f9eaa38f6d9d3e54c2470ff33e26cb0274e419028c7d5dcb0ab0b204cf36caa

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

Filesize
492KB

MD5
7b975db0eab44098894af51289d1de3e

SHA1
e50cb9e8158d0cfdb1e548408c2429b2bb58e441

SHA256
989d185b44a90c517cb91880b18ececd8c9f4391245f5572d7cb32b95dd11d36

SHA512
996144a67a882505f96d64dec4690d074d420e9103f3a42eceb0bacdd96439254f9eaa38f6d9d3e54c2470ff33e26cb0274e419028c7d5dcb0ab0b204cf36caa

Download Submit
memory/4320-134-0x0000000000000000-mapping.dmp

Download
memory/4320-138-0x00007FFC87780000-0x00007FFC88241000-memory.dmp

Filesize
10.8MB

Download
memory/4320-139-0x00007FFC87780000-0x00007FFC88241000-memory.dmp

Filesize
10.8MB

Download
memory/4772-132-0x0000000000230000-0x00000000002B0000-memory.dmp

Filesize
512KB

Download
memory/4772-133-0x00007FFC87780000-0x00007FFC88241000-memory.dmp

Filesize
10.8MB

Download
memory/4772-137-0x00007FFC87780000-0x00007FFC88241000-memory.dmp

Filesize
10.8MB

Download