1996f3a3651f87fa34498cfae77b89da8ce9e584b6bfd6abbdc95e5e54a59eef

Analysis

max time kernel
147s
max time network
166s
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 04:25

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

1996f3a3651f87fa34498cfae77b89da8ce9e584b6bfd6abbdc95e5e54a59eef.exe
Size

194KB
MD5

c4e9f3a491245e724403df57c11aad84
SHA1

b8dd9be808b8381949f2bc70f9f03342445b981e
SHA256

1996f3a3651f87fa34498cfae77b89da8ce9e584b6bfd6abbdc95e5e54a59eef
SHA512

e269af0eb2113c0b3858227f1923176d808f6698b77d6d7c5eec89deb070f4e441fbc26740671602d45566b9418cc7420a785e7c2f041f52d9a05fa3f6db485e
SSDEEP

6144:HDHyVG/j8MmXN6DV5sPYOI+oZCSaRpJ/mig:jSs/AMmXoD3uYOImSaRHuig

Score

8^/10

persistence

Malware Config

Signatures

Executes dropped EXE 1 IoCs

Processes:

steamwebhelper.exe

pid process

4732 steamwebhelper.exe

pid	process
4732	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:

1996f3a3651f87fa34498cfae77b89da8ce9e584b6bfd6abbdc95e5e54a59eef.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation	1996f3a3651f87fa34498cfae77b89da8ce9e584b6bfd6abbdc95e5e54a59eef.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

1996f3a3651f87fa34498cfae77b89da8ce9e584b6bfd6abbdc95e5e54a59eef.exesteamwebhelper.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\steamwebhelper = "C:\\Users\\Admin\\AppData\\Roaming\\steamwebhelper2\\steamwebhelper.exe"	1996f3a3651f87fa34498cfae77b89da8ce9e584b6bfd6abbdc95e5e54a59eef.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:

1996f3a3651f87fa34498cfae77b89da8ce9e584b6bfd6abbdc95e5e54a59eef.exesteamwebhelper.exe

pid process

1664 1996f3a3651f87fa34498cfae77b89da8ce9e584b6bfd6abbdc95e5e54a59eef.exe
4732 steamwebhelper.exe

pid	process
1664	1996f3a3651f87fa34498cfae77b89da8ce9e584b6bfd6abbdc95e5e54a59eef.exe
4732	steamwebhelper.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

1996f3a3651f87fa34498cfae77b89da8ce9e584b6bfd6abbdc95e5e54a59eef.exesteamwebhelper.exe

description	pid	process
Token: SeDebugPrivilege	1664	1996f3a3651f87fa34498cfae77b89da8ce9e584b6bfd6abbdc95e5e54a59eef.exe
Token: SeDebugPrivilege	4732	steamwebhelper.exe

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

1996f3a3651f87fa34498cfae77b89da8ce9e584b6bfd6abbdc95e5e54a59eef.exe

description	pid	process	target process
PID 1664 wrote to memory of 4732	1664	1996f3a3651f87fa34498cfae77b89da8ce9e584b6bfd6abbdc95e5e54a59eef.exe	steamwebhelper.exe
PID 1664 wrote to memory of 4732	1664	1996f3a3651f87fa34498cfae77b89da8ce9e584b6bfd6abbdc95e5e54a59eef.exe	steamwebhelper.exe

C:\Users\Admin\AppData\Local\Temp\1996f3a3651f87fa34498cfae77b89da8ce9e584b6bfd6abbdc95e5e54a59eef.exe
"C:\Users\Admin\AppData\Local\Temp\1996f3a3651f87fa34498cfae77b89da8ce9e584b6bfd6abbdc95e5e54a59eef.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1664

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:4732

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Roaming\steamwebhelper2\steamwebhelper.exe
Filesize
194KB

MD5
c4e9f3a491245e724403df57c11aad84

SHA1
b8dd9be808b8381949f2bc70f9f03342445b981e

SHA256
1996f3a3651f87fa34498cfae77b89da8ce9e584b6bfd6abbdc95e5e54a59eef

SHA512
e269af0eb2113c0b3858227f1923176d808f6698b77d6d7c5eec89deb070f4e441fbc26740671602d45566b9418cc7420a785e7c2f041f52d9a05fa3f6db485e

Download Submit
C:\Users\Admin\AppData\Roaming\steamwebhelper2\steamwebhelper.exe
Filesize
194KB

MD5
c4e9f3a491245e724403df57c11aad84

SHA1
b8dd9be808b8381949f2bc70f9f03342445b981e

SHA256
1996f3a3651f87fa34498cfae77b89da8ce9e584b6bfd6abbdc95e5e54a59eef

SHA512
e269af0eb2113c0b3858227f1923176d808f6698b77d6d7c5eec89deb070f4e441fbc26740671602d45566b9418cc7420a785e7c2f041f52d9a05fa3f6db485e

Download Submit
memory/1664-132-0x0000000000730000-0x0000000000766000-memory.dmp

Filesize
216KB

Download
memory/1664-133-0x00007FFA67360000-0x00007FFA67E21000-memory.dmp

Filesize
10.8MB

Download
memory/1664-137-0x00007FFA67360000-0x00007FFA67E21000-memory.dmp

Filesize
10.8MB

Download
memory/4732-134-0x0000000000000000-mapping.dmp

Download
memory/4732-138-0x00007FFA67360000-0x00007FFA67E21000-memory.dmp

Filesize
10.8MB

Download
memory/4732-139-0x00007FFA67360000-0x00007FFA67E21000-memory.dmp

Filesize
10.8MB

Download