Analysis Overview
SHA256
8a37cfdf9c3d4beca639ead3b11688360333a550aedb60d4dbff82140b9b417e
Threat Level: Known bad
The file stub.exe was found to be: Known bad.
Malicious Activity Summary
Stealerium
Stealerium family
Checks computer location settings
Unsigned PE
Enumerates physical storage devices
Suspicious use of WriteProcessMemory
Delays execution with timeout.exe
Kills process with taskkill
Suspicious use of AdjustPrivilegeToken
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2023-05-31 18:32
Signatures
Stealerium family
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2023-05-31 18:32
Reported
2023-05-31 18:35
Platform
win7-20230220-en
Max time kernel
29s
Max time network
33s
Command Line
Signatures
Stealerium
Enumerates physical storage devices
Delays execution with timeout.exe
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\timeout.exe | N/A |
Kills process with taskkill
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\taskkill.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\stub.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\SysWOW64\taskkill.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\stub.exe
"C:\Users\Admin\AppData\Local\Temp\stub.exe"
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C C:\Users\Admin\AppData\Local\Temp\tmp3FCF.tmp.bat
C:\Windows\SysWOW64\chcp.com
chcp 65001
C:\Windows\SysWOW64\taskkill.exe
TaskKill /F /IM 2016
C:\Windows\SysWOW64\timeout.exe
Timeout /T 2 /Nobreak
Network
Files
memory/2016-54-0x0000000000AF0000-0x0000000000C82000-memory.dmp
memory/2016-55-0x0000000004A30000-0x0000000004A70000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\tmp3FCF.tmp.bat
| MD5 | 42e52bfaa667927b4b613a222f3a6f4c |
| SHA1 | b699abc4ef08a6dfaf5ea210762057e1ecee0aa5 |
| SHA256 | ce07a3388114fc1f709a8fdf5b196d62771a3a79b2aafc9cf1aeedd9d32d7969 |
| SHA512 | af20cdc34fe0795d09ebd35816e3b294b37c9fc1a74800aa8347da33625e39d49556d59eff426d1de0753279d7f0a782492e072157cbf1d358fc4b653737d2bb |
Analysis: behavioral2
Detonation Overview
Submitted
2023-05-31 18:32
Reported
2023-05-31 18:35
Platform
win10v2004-20230220-en
Max time kernel
145s
Max time network
154s
Command Line
Signatures
Stealerium
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\stub.exe | N/A |
Enumerates physical storage devices
Delays execution with timeout.exe
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\timeout.exe | N/A |
Kills process with taskkill
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\taskkill.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\stub.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\SysWOW64\taskkill.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\stub.exe
"C:\Users\Admin\AppData\Local\Temp\stub.exe"
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C C:\Users\Admin\AppData\Local\Temp\tmpCE80.tmp.bat
C:\Windows\SysWOW64\chcp.com
chcp 65001
C:\Windows\SysWOW64\taskkill.exe
TaskKill /F /IM 1788
C:\Windows\SysWOW64\timeout.exe
Timeout /T 2 /Nobreak
Network
| Country | Destination | Domain | Proto |
| US | 52.242.101.226:443 | tcp | |
| US | 8.8.8.8:53 | 97.17.167.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 133.211.185.52.in-addr.arpa | udp |
| US | 52.242.101.226:443 | tcp | |
| US | 52.242.101.226:443 | tcp | |
| US | 8.8.8.8:53 | 44.8.109.52.in-addr.arpa | udp |
| US | 52.242.101.226:443 | tcp | |
| US | 52.242.101.226:443 | tcp | |
| NL | 8.238.179.126:80 | tcp | |
| NL | 173.223.113.164:443 | tcp | |
| NL | 173.223.113.131:80 | tcp | |
| US | 131.253.33.203:80 | tcp | |
| US | 52.242.101.226:443 | tcp | |
| US | 13.107.42.16:443 | tcp | |
| US | 52.242.101.226:443 | tcp | |
| US | 52.242.101.226:443 | tcp |
Files
memory/1788-133-0x0000000000380000-0x0000000000512000-memory.dmp
memory/1788-134-0x0000000004ED0000-0x0000000004F36000-memory.dmp
memory/1788-135-0x0000000004E50000-0x0000000004E60000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\tmpCE80.tmp.bat
| MD5 | 89ee111f1c68257274ce6d32fc411dc4 |
| SHA1 | 2bd2825dc2a7dd3635bdad31df5da31a001b22dd |
| SHA256 | 1c0b9a3dfd0b4c2a18e50e11591cbf2bfcdf5ad80045fc44b5089b6cce8f3c7a |
| SHA512 | e77838db0447abe2ff8c3e255281e0685b35128376fb553c349e1b36cbfc44494a5f99727bc4910c6ec7b7960f9a7f041c0d29c1badd869ba9633b1f092915ca |