Analysis Overview
SHA256
052afe5a2734aec7ab6c4e3e847f322ff11e7ed63a85baa9b185dbbbb658a089
Threat Level: Likely malicious
The file 052afe5a2734aec7ab6c4e3e847f322ff11e7ed63a85baa9b185dbbbb658a089 was found to be: Likely malicious.
Malicious Activity Summary
Modifies AppInit DLL entries
Executes dropped EXE
Drops file in Program Files directory
Unsigned PE
Suspicious use of UnmapMainImage
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-04-07 18:15
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-04-07 18:15
Reported
2024-04-07 18:17
Platform
win7-20240221-en
Max time kernel
117s
Max time network
120s
Command Line
Signatures
Modifies AppInit DLL entries
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\PROGRA~3\Mozilla\xobykzk.exe | N/A |
Drops file in Program Files directory
| Description | Indicator | Process | Target |
| File created | C:\PROGRA~3\Mozilla\xobykzk.exe | C:\Users\Admin\AppData\Local\Temp\052afe5a2734aec7ab6c4e3e847f322ff11e7ed63a85baa9b185dbbbb658a089.exe | N/A |
| File created | C:\PROGRA~3\Mozilla\yvzxgmj.dll | C:\PROGRA~3\Mozilla\xobykzk.exe | N/A |
Suspicious use of UnmapMainImage
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\052afe5a2734aec7ab6c4e3e847f322ff11e7ed63a85baa9b185dbbbb658a089.exe | N/A |
| N/A | N/A | C:\PROGRA~3\Mozilla\xobykzk.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 2976 wrote to memory of 2052 | N/A | C:\Windows\system32\taskeng.exe | C:\PROGRA~3\Mozilla\xobykzk.exe |
| PID 2976 wrote to memory of 2052 | N/A | C:\Windows\system32\taskeng.exe | C:\PROGRA~3\Mozilla\xobykzk.exe |
| PID 2976 wrote to memory of 2052 | N/A | C:\Windows\system32\taskeng.exe | C:\PROGRA~3\Mozilla\xobykzk.exe |
| PID 2976 wrote to memory of 2052 | N/A | C:\Windows\system32\taskeng.exe | C:\PROGRA~3\Mozilla\xobykzk.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\052afe5a2734aec7ab6c4e3e847f322ff11e7ed63a85baa9b185dbbbb658a089.exe
"C:\Users\Admin\AppData\Local\Temp\052afe5a2734aec7ab6c4e3e847f322ff11e7ed63a85baa9b185dbbbb658a089.exe"
C:\Windows\system32\taskeng.exe
taskeng.exe {E78D1E7E-674B-429F-AB9C-3430F23C017E} S-1-5-18:NT AUTHORITY\System:Service:
C:\PROGRA~3\Mozilla\xobykzk.exe
C:\PROGRA~3\Mozilla\xobykzk.exe -clyupje
Network
Files
memory/3024-0-0x0000000000400000-0x000000000045E000-memory.dmp
memory/3024-1-0x00000000002C0000-0x000000000031B000-memory.dmp
memory/3024-2-0x0000000000400000-0x000000000045B000-memory.dmp
memory/3024-4-0x0000000000400000-0x000000000045B000-memory.dmp
C:\PROGRA~3\Mozilla\xobykzk.exe
| MD5 | e7d9c85911ddef9c8a6689a2502c1f59 |
| SHA1 | 49f8fa5f1b72ff76a818a056fad706d4c472b69f |
| SHA256 | 13575da0e77a7e764503dcb592b7f4bf42b9f260bae2ce45e0caf43c2eb6d398 |
| SHA512 | 40a9c8f98a9bef9770933ec8f753fbf367bdf14371b673d5313fb25bf9b724e7807aa70a797b6b4d03cd8c5cdfc406fff29961d3af57a8b0c834a5ec918db134 |
memory/2052-7-0x0000000000460000-0x00000000004BB000-memory.dmp
memory/2052-8-0x0000000000400000-0x000000000045B000-memory.dmp
memory/2052-10-0x0000000000400000-0x000000000045B000-memory.dmp
memory/2052-11-0x0000000000460000-0x00000000004BB000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-04-07 18:15
Reported
2024-04-07 18:17
Platform
win10v2004-20240319-en
Max time kernel
147s
Max time network
154s
Command Line
Signatures
Modifies AppInit DLL entries
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\PROGRA~3\Mozilla\jhifwqk.exe | N/A |
Drops file in Program Files directory
| Description | Indicator | Process | Target |
| File created | C:\PROGRA~3\Mozilla\jhifwqk.exe | C:\Users\Admin\AppData\Local\Temp\052afe5a2734aec7ab6c4e3e847f322ff11e7ed63a85baa9b185dbbbb658a089.exe | N/A |
| File created | C:\PROGRA~3\Mozilla\biclnte.dll | C:\PROGRA~3\Mozilla\jhifwqk.exe | N/A |
Processes
C:\Users\Admin\AppData\Local\Temp\052afe5a2734aec7ab6c4e3e847f322ff11e7ed63a85baa9b185dbbbb658a089.exe
"C:\Users\Admin\AppData\Local\Temp\052afe5a2734aec7ab6c4e3e847f322ff11e7ed63a85baa9b185dbbbb658a089.exe"
C:\PROGRA~3\Mozilla\jhifwqk.exe
C:\PROGRA~3\Mozilla\jhifwqk.exe -zmqutfb
C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4168 --field-trial-handle=2288,i,11069632825633797559,14829202121434726371,262144 --variations-seed-version /prefetch:8
Network
| Country | Destination | Domain | Proto |
| US | 20.231.121.79:80 | tcp | |
| US | 8.8.8.8:53 | 133.32.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 228.249.119.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 241.154.82.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 241.197.17.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 21.114.53.23.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 149.220.183.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 133.211.185.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 183.59.114.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 198.187.3.20.in-addr.arpa | udp |
| GB | 13.105.221.16:443 | tcp | |
| US | 8.8.8.8:53 | 42.56.20.217.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 216.197.17.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 55.36.223.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 13.227.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | tse1.mm.bing.net | udp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 8.8.8.8:53 | 26.35.223.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 89.65.42.20.in-addr.arpa | udp |
Files
memory/2076-0-0x0000000000400000-0x000000000045E000-memory.dmp
memory/2076-1-0x0000000002200000-0x000000000225B000-memory.dmp
memory/2076-2-0x0000000000400000-0x000000000045B000-memory.dmp
C:\ProgramData\Mozilla\jhifwqk.exe
| MD5 | 1cdb08de669e583aeaa0c9984dbea2a7 |
| SHA1 | 3d0d872febba28ca3c1993abac0fcea11a5b654a |
| SHA256 | 9d3cbe8c0968542c5bdb855fc98ba204e2cabf625d302d51610c3017e75f9117 |
| SHA512 | 7660f9d87d18b6bbcb473d9dfdbbc47fd24b3f050933c4fc7b224069f9955ad3e2e44fb1ff1890a7d8e4a35f9d9b6e65b3d5d17606cdab4568079980973bdc81 |
memory/2076-6-0x0000000000400000-0x000000000045B000-memory.dmp
memory/2076-8-0x0000000002200000-0x000000000225B000-memory.dmp
memory/5032-9-0x0000000000D70000-0x0000000000DCB000-memory.dmp
memory/5032-10-0x0000000000400000-0x000000000045B000-memory.dmp
memory/5032-12-0x0000000000400000-0x000000000045B000-memory.dmp