3a08fd6f31042a3e3a7c14448c589290a0003bcc84a519e8ad9e9853f52aa6c3

Analysis

max time kernel
123s
max time network
157s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
25-11-2022 02:43

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General

Target

3a08fd6f31042a3e3a7c14448c589290a0003bcc84a519e8ad9e9853f52aa6c3.exe
Size

492KB
MD5

a6986c0e2a4d5cc5a4bfdc681f3bc84f
SHA1

1c504c1381b0a6728bcf830c0bcf0254a38b8059
SHA256

3a08fd6f31042a3e3a7c14448c589290a0003bcc84a519e8ad9e9853f52aa6c3
SHA512

c95010c175f740612ab013af8c276d390b21ad12f78b71dbf568d70603cf37ee441c059c03d1f63ba88463b84dd912786ace74382b20ba639a02e8e5fb52d955
SSDEEP

6144:+7zp1f7p3gtzRqZqMt69NuSIoLhrOER0u+GIIIIIIIhIIIIIIIIIIIIIIIUz:+7zpt7p2zRmquY0uhhm5z

Score

8^/10

persistence

Malware Config

Signatures

Executes dropped EXE 1 IoCs

Processes:

steamwebhelper.exe

pid process

3048 steamwebhelper.exe

pid	process
3048	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:

3a08fd6f31042a3e3a7c14448c589290a0003bcc84a519e8ad9e9853f52aa6c3.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation	3a08fd6f31042a3e3a7c14448c589290a0003bcc84a519e8ad9e9853f52aa6c3.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

3a08fd6f31042a3e3a7c14448c589290a0003bcc84a519e8ad9e9853f52aa6c3.exesteamwebhelper.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\steamwebhelper = "C:\\Users\\Admin\\AppData\\Roaming\\steamwebhelper2\\steamwebhelper.exe"	3a08fd6f31042a3e3a7c14448c589290a0003bcc84a519e8ad9e9853f52aa6c3.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:

3a08fd6f31042a3e3a7c14448c589290a0003bcc84a519e8ad9e9853f52aa6c3.exesteamwebhelper.exe

pid process

1944 3a08fd6f31042a3e3a7c14448c589290a0003bcc84a519e8ad9e9853f52aa6c3.exe
3048 steamwebhelper.exe

pid	process
1944	3a08fd6f31042a3e3a7c14448c589290a0003bcc84a519e8ad9e9853f52aa6c3.exe
3048	steamwebhelper.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

3a08fd6f31042a3e3a7c14448c589290a0003bcc84a519e8ad9e9853f52aa6c3.exesteamwebhelper.exe

description	pid	process
Token: SeDebugPrivilege	1944	3a08fd6f31042a3e3a7c14448c589290a0003bcc84a519e8ad9e9853f52aa6c3.exe
Token: SeDebugPrivilege	3048	steamwebhelper.exe

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

3a08fd6f31042a3e3a7c14448c589290a0003bcc84a519e8ad9e9853f52aa6c3.exe

description	pid	process	target process
PID 1944 wrote to memory of 3048	1944	3a08fd6f31042a3e3a7c14448c589290a0003bcc84a519e8ad9e9853f52aa6c3.exe	steamwebhelper.exe
PID 1944 wrote to memory of 3048	1944	3a08fd6f31042a3e3a7c14448c589290a0003bcc84a519e8ad9e9853f52aa6c3.exe	steamwebhelper.exe

C:\Users\Admin\AppData\Local\Temp\3a08fd6f31042a3e3a7c14448c589290a0003bcc84a519e8ad9e9853f52aa6c3.exe
"C:\Users\Admin\AppData\Local\Temp\3a08fd6f31042a3e3a7c14448c589290a0003bcc84a519e8ad9e9853f52aa6c3.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1944

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:3048

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

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Downloads

C:\Users\Admin\AppData\Roaming\steamwebhelper2\steamwebhelper.exe
Filesize
492KB

MD5
a6986c0e2a4d5cc5a4bfdc681f3bc84f

SHA1
1c504c1381b0a6728bcf830c0bcf0254a38b8059

SHA256
3a08fd6f31042a3e3a7c14448c589290a0003bcc84a519e8ad9e9853f52aa6c3

SHA512
c95010c175f740612ab013af8c276d390b21ad12f78b71dbf568d70603cf37ee441c059c03d1f63ba88463b84dd912786ace74382b20ba639a02e8e5fb52d955

Download Submit
C:\Users\Admin\AppData\Roaming\steamwebhelper2\steamwebhelper.exe
Filesize
492KB

MD5
a6986c0e2a4d5cc5a4bfdc681f3bc84f

SHA1
1c504c1381b0a6728bcf830c0bcf0254a38b8059

SHA256
3a08fd6f31042a3e3a7c14448c589290a0003bcc84a519e8ad9e9853f52aa6c3

SHA512
c95010c175f740612ab013af8c276d390b21ad12f78b71dbf568d70603cf37ee441c059c03d1f63ba88463b84dd912786ace74382b20ba639a02e8e5fb52d955

Download Submit
memory/1944-132-0x00000000000B0000-0x0000000000130000-memory.dmp

Filesize
512KB

Download
memory/1944-133-0x00007FF997050000-0x00007FF997B11000-memory.dmp

Filesize
10.8MB

Download
memory/1944-137-0x00007FF997050000-0x00007FF997B11000-memory.dmp

Filesize
10.8MB

Download
memory/3048-134-0x0000000000000000-mapping.dmp

Download
memory/3048-138-0x00007FF997050000-0x00007FF997B11000-memory.dmp

Filesize
10.8MB

Download
memory/3048-139-0x00007FF997050000-0x00007FF997B11000-memory.dmp

Filesize
10.8MB

Download