165ac0d8f6f51bd819214693a4dbd43dc4cf56f76a30c8f22636725d5c4ab786

Analysis

max time kernel
174s
max time network
186s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
04-10-2022 02:30

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General

Target

165ac0d8f6f51bd819214693a4dbd43dc4cf56f76a30c8f22636725d5c4ab786.exe
Size

201KB
MD5

424641f17d69abf134d2bd862a2a5f80
SHA1

b648bbb3cb58b61c3eb1827cadbd61350297d805
SHA256

165ac0d8f6f51bd819214693a4dbd43dc4cf56f76a30c8f22636725d5c4ab786
SHA512

6bb4e91353560762a9e3c201e835625611b0dc1e26bb6fa09f78323e3e659a93c37a912833ab59b93c7507d428f74edcb28412ebb8f1f1be17b2c16a535d0b63
SSDEEP

3072:NK4pAKaF0+xVf/qLkmpZ+rjmuHLBKeAYs5FT0nvvgJZdsVNwoCAY:NlaF0uV6LkmLgmbws5FT0ngJZ6NwonY

Score

8^/10

persistence

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2004	steamwebhelper.exe

Loads dropped DLL 1 IoCs

pid	Process
1456	165ac0d8f6f51bd819214693a4dbd43dc4cf56f76a30c8f22636725d5c4ab786.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\steamwebhelper = "C:\\Users\\Admin\\AppData\\Roaming\\steamwebhelper2\\steamwebhelper.exe"	steamwebhelper.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\steamwebhelper = "C:\\Users\\Admin\\AppData\\Roaming\\steamwebhelper2\\steamwebhelper.exe"	165ac0d8f6f51bd819214693a4dbd43dc4cf56f76a30c8f22636725d5c4ab786.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

pid	Process
1456	165ac0d8f6f51bd819214693a4dbd43dc4cf56f76a30c8f22636725d5c4ab786.exe
2004	steamwebhelper.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1456	165ac0d8f6f51bd819214693a4dbd43dc4cf56f76a30c8f22636725d5c4ab786.exe
Token: SeDebugPrivilege	2004	steamwebhelper.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1456 wrote to memory of 2004	1456	165ac0d8f6f51bd819214693a4dbd43dc4cf56f76a30c8f22636725d5c4ab786.exe	27
PID 1456 wrote to memory of 2004	1456	165ac0d8f6f51bd819214693a4dbd43dc4cf56f76a30c8f22636725d5c4ab786.exe	27
PID 1456 wrote to memory of 2004	1456	165ac0d8f6f51bd819214693a4dbd43dc4cf56f76a30c8f22636725d5c4ab786.exe	27
PID 1456 wrote to memory of 2004	1456	165ac0d8f6f51bd819214693a4dbd43dc4cf56f76a30c8f22636725d5c4ab786.exe	27

C:\Users\Admin\AppData\Local\Temp\165ac0d8f6f51bd819214693a4dbd43dc4cf56f76a30c8f22636725d5c4ab786.exe
"C:\Users\Admin\AppData\Local\Temp\165ac0d8f6f51bd819214693a4dbd43dc4cf56f76a30c8f22636725d5c4ab786.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1456
- 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:2004

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

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Downloads

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

Filesize
201KB

MD5
424641f17d69abf134d2bd862a2a5f80

SHA1
b648bbb3cb58b61c3eb1827cadbd61350297d805

SHA256
165ac0d8f6f51bd819214693a4dbd43dc4cf56f76a30c8f22636725d5c4ab786

SHA512
6bb4e91353560762a9e3c201e835625611b0dc1e26bb6fa09f78323e3e659a93c37a912833ab59b93c7507d428f74edcb28412ebb8f1f1be17b2c16a535d0b63

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

Filesize
201KB

MD5
424641f17d69abf134d2bd862a2a5f80

SHA1
b648bbb3cb58b61c3eb1827cadbd61350297d805

SHA256
165ac0d8f6f51bd819214693a4dbd43dc4cf56f76a30c8f22636725d5c4ab786

SHA512
6bb4e91353560762a9e3c201e835625611b0dc1e26bb6fa09f78323e3e659a93c37a912833ab59b93c7507d428f74edcb28412ebb8f1f1be17b2c16a535d0b63

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

Filesize
201KB

MD5
424641f17d69abf134d2bd862a2a5f80

SHA1
b648bbb3cb58b61c3eb1827cadbd61350297d805

SHA256
165ac0d8f6f51bd819214693a4dbd43dc4cf56f76a30c8f22636725d5c4ab786

SHA512
6bb4e91353560762a9e3c201e835625611b0dc1e26bb6fa09f78323e3e659a93c37a912833ab59b93c7507d428f74edcb28412ebb8f1f1be17b2c16a535d0b63

Download Submit
memory/1456-54-0x0000000000350000-0x0000000000388000-memory.dmp

Filesize
224KB

Download
memory/1456-55-0x0000000000200000-0x0000000000206000-memory.dmp

Filesize
24KB

Download
memory/1456-56-0x0000000075021000-0x0000000075023000-memory.dmp

Filesize
8KB

Download
memory/2004-58-0x0000000000000000-mapping.dmp

Download
memory/2004-61-0x0000000000B60000-0x0000000000B98000-memory.dmp

Filesize
224KB

Download