989d185b44a90c517cb91880b18ececd8c9f4391245f5572d7cb32b95dd11d36

Analysis

max time kernel
93s
max time network
215s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-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

1640 steamwebhelper.exe

pid	process
1640	steamwebhelper.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

steamwebhelper.exe989d185b44a90c517cb91880b18ececd8c9f4391245f5572d7cb32b95dd11d36.exe

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

1248 989d185b44a90c517cb91880b18ececd8c9f4391245f5572d7cb32b95dd11d36.exe
1640 steamwebhelper.exe

pid	process
1248	989d185b44a90c517cb91880b18ececd8c9f4391245f5572d7cb32b95dd11d36.exe
1640	steamwebhelper.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

989d185b44a90c517cb91880b18ececd8c9f4391245f5572d7cb32b95dd11d36.exesteamwebhelper.exe

description	pid	process
Token: SeDebugPrivilege	1248	989d185b44a90c517cb91880b18ececd8c9f4391245f5572d7cb32b95dd11d36.exe
Token: SeDebugPrivilege	1640	steamwebhelper.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

989d185b44a90c517cb91880b18ececd8c9f4391245f5572d7cb32b95dd11d36.exe

description	pid	process	target process
PID 1248 wrote to memory of 1640	1248	989d185b44a90c517cb91880b18ececd8c9f4391245f5572d7cb32b95dd11d36.exe	steamwebhelper.exe
PID 1248 wrote to memory of 1640	1248	989d185b44a90c517cb91880b18ececd8c9f4391245f5572d7cb32b95dd11d36.exe	steamwebhelper.exe
PID 1248 wrote to memory of 1640	1248	989d185b44a90c517cb91880b18ececd8c9f4391245f5572d7cb32b95dd11d36.exe	steamwebhelper.exe

C:\Users\Admin\AppData\Local\Temp\989d185b44a90c517cb91880b18ececd8c9f4391245f5572d7cb32b95dd11d36.exe
"C:\Users\Admin\AppData\Local\Temp\989d185b44a90c517cb91880b18ececd8c9f4391245f5572d7cb32b95dd11d36.exe"
1⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1248

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:1640

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

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/1248-54-0x0000000000C50000-0x0000000000CD0000-memory.dmp

Filesize
512KB

Download
memory/1248-55-0x0000000000BC0000-0x0000000000BF6000-memory.dmp

Filesize
216KB

Download
memory/1248-56-0x00000000001E0000-0x00000000001E6000-memory.dmp

Filesize
24KB

Download
memory/1248-57-0x000007FEFC461000-0x000007FEFC463000-memory.dmp

Filesize
8KB

Download
memory/1640-58-0x0000000000000000-mapping.dmp

Download
memory/1640-61-0x0000000000CF0000-0x0000000000D70000-memory.dmp

Filesize
512KB

Download