Analysis Overview
SHA256
fe270757a9e04664508fa0caa16ac1c01f228b37c68fd7a0b6fd12f17bf4fe5e
Threat Level: Known bad
The file fe270757a9e04664508fa0caa16ac1c01f228b37c68fd7a0b6fd12f17bf4fe5e was found to be: Known bad.
Malicious Activity Summary
Detects executables packed with eXPressor
Detects executables packed with eXPressor
Modifies Installed Components in the registry
Executes dropped EXE
Loads dropped DLL
Deletes itself
Drops file in System32 directory
Program crash
Unsigned PE
Suspicious use of WriteProcessMemory
Runs .reg file with regedit
Suspicious use of AdjustPrivilegeToken
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-06-02 04:57
Signatures
Detects executables packed with eXPressor
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-06-02 04:57
Reported
2024-06-02 05:00
Platform
win7-20240508-en
Max time kernel
121s
Max time network
122s
Command Line
Signatures
Detects executables packed with eXPressor
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Modifies Installed Components in the registry
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\|BGG7GE77./6EA.58:1,:3@:./FF4GEEC8AGF| | C:\Windows\SysWOW64\regedit.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\|BGG7GE77./6EA.58:1,:3@:./FF4GEEC8AGF|\stubpath = "C:\\Windows\\system32\\WinHelp48.exe" | C:\Windows\SysWOW64\regedit.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\|BGG7GE77./6EA.58:1,:3@:./FF4GEEC8AGF| | C:\Windows\SysWOW64\regedit.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\|BGG7GE77./6EA.58:1,:3@:./FF4GEEC8AGF|\stubpath = "C:\\Windows\\system32\\WinHelp4.exe" | C:\Windows\SysWOW64\regedit.exe | N/A |
Deletes itself
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WinHelp48.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WinHelp48.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\WinHelp4.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\fe270757a9e04664508fa0caa16ac1c01f228b37c68fd7a0b6fd12f17bf4fe5e.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\fe270757a9e04664508fa0caa16ac1c01f228b37c68fd7a0b6fd12f17bf4fe5e.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\WinHelp48.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\WinHelp48.exe | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\SysWOW64\WinHelp48.exe | C:\Users\Admin\AppData\Local\Temp\fe270757a9e04664508fa0caa16ac1c01f228b37c68fd7a0b6fd12f17bf4fe5e.exe | N/A |
| File created | C:\Windows\SysWOW64\WinHelp4.exe | C:\Windows\SysWOW64\WinHelp48.exe | N/A |
Runs .reg file with regedit
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\regedit.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\regedit.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeShutdownPrivilege | N/A | C:\Windows\SysWOW64\WinHelp4.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\fe270757a9e04664508fa0caa16ac1c01f228b37c68fd7a0b6fd12f17bf4fe5e.exe
"C:\Users\Admin\AppData\Local\Temp\fe270757a9e04664508fa0caa16ac1c01f228b37c68fd7a0b6fd12f17bf4fe5e.exe"
C:\Windows\SysWOW64\regedit.exe
regedit.exe /s C:\Users\Admin\AppData\Local\Temp\259399648.reg
C:\Windows\SysWOW64\WinHelp48.exe
C:\Windows\system32\WinHelp48.exe kowdgjttgC:\Users\Admin\AppData\Local\Temp\fe270757a9e04664508fa0caa16ac1c01f228b37c68fd7a0b6fd12f17bf4fe5e.exe
C:\Windows\SysWOW64\regedit.exe
regedit.exe /s C:\Users\Admin\AppData\Local\Temp\259399804.reg
C:\Windows\SysWOW64\WinHelp4.exe
C:\Windows\system32\WinHelp4.exe kowdgjttgC:\Windows\SysWOW64\WinHelp48.exe
C:\Windows\SysWOW64\svchost.exe
C:\Windows\system32\svchost.exe
Network
Files
\Windows\SysWOW64\WinHelp48.exe
| MD5 | 662155a9d892a12179e788f7fc98b6a2 |
| SHA1 | 92cd5f483b873875108af2c8490b08d9a4a6ea07 |
| SHA256 | ff44b9714eceac61d302f35247cfc9b8b20615b4ce390eaa09a2f80e000eb848 |
| SHA512 | aed0a9ccc249d9256efcc6f2c79a6a65007864e672e0237d6038f7f63ee19f206cd4b8f601cfccba8b3b29a01f567e501e72267516d6ac192b37d1512f28896d |
C:\Users\Admin\AppData\Local\Temp\259399648.reg
| MD5 | 9086c2ad9d684ad830c07b1706582372 |
| SHA1 | 8ed1a09fb27fe1c67454b6766b8f652aa71c5861 |
| SHA256 | 96f6992faa0dc9b46d97e3390b19eb703e500ed1e87811f754151543b20055c9 |
| SHA512 | 4a3ab38e5e94e529d6cc2070c45c4b6dd012655fe3acde37df6d0a2a3c61bd6e2a9cc5ec0686acae9cf0b75e25945292426451e77984c219c7cf93e842aae6f6 |
C:\Users\Admin\AppData\Local\Temp\259399804.reg
| MD5 | a1c689d90871f371ac1eeef543e78af9 |
| SHA1 | b856582707581132fd9b47d0d4503902632ac907 |
| SHA256 | cca5af20484ba7cf4a97919ae1a6ac8f668791cffd9fe8b48366adb7c277680e |
| SHA512 | 77280d4131c2138b28b35bed64db9ca18cd38996b9ba36bb074831079fd828bf57b68f1df4a68c0a79047f464098a0a423c0be77ddced8cc5a1c82d22025f2eb |
\Windows\SysWOW64\WinHelp4.exe
| MD5 | 45f37c1a42c85e222711e1dafe0ec5ab |
| SHA1 | 66e023f6c4c09c423f36f0296b8a35503e176dfc |
| SHA256 | b1a3a146805023b0a72e91734b5e6b5b18c08259cfef5d148d605258c2ad2a63 |
| SHA512 | 818f85a2c7c402c2baf48f9dd208262c5d9eb636cac05793ada03b3e1173d90375510a80d920909cd289d15db3ce5293c17053955587d127614a2d5e4c0f2fc6 |
memory/2336-22-0x0000000013150000-0x0000000013167000-memory.dmp
memory/2336-23-0x0000000013150000-0x0000000013167000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-06-02 04:57
Reported
2024-06-02 05:00
Platform
win10v2004-20240426-en
Max time kernel
92s
Max time network
96s
Command Line
Signatures
Detects executables packed with eXPressor
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Modifies Installed Components in the registry
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\|BGG7GE77./6EA.58:1,:3@:./FF4GEEC8AGF| | C:\Windows\SysWOW64\regedit.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\|BGG7GE77./6EA.58:1,:3@:./FF4GEEC8AGF|\stubpath = "C:\\Windows\\system32\\WinHelp65.exe" | C:\Windows\SysWOW64\regedit.exe | N/A |
Deletes itself
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WinHelp65.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WinHelp65.exe | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\SysWOW64\WinHelp65.exe | C:\Users\Admin\AppData\Local\Temp\fe270757a9e04664508fa0caa16ac1c01f228b37c68fd7a0b6fd12f17bf4fe5e.exe | N/A |
Program crash
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\Windows\SysWOW64\svchost.exe |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\Windows\SysWOW64\svchost.exe |
Runs .reg file with regedit
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\regedit.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeShutdownPrivilege | N/A | C:\Windows\SysWOW64\WinHelp65.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\fe270757a9e04664508fa0caa16ac1c01f228b37c68fd7a0b6fd12f17bf4fe5e.exe
"C:\Users\Admin\AppData\Local\Temp\fe270757a9e04664508fa0caa16ac1c01f228b37c68fd7a0b6fd12f17bf4fe5e.exe"
C:\Windows\SysWOW64\regedit.exe
regedit.exe /s C:\Users\Admin\AppData\Local\Temp\240597265.reg
C:\Windows\SysWOW64\WinHelp65.exe
C:\Windows\system32\WinHelp65.exe kowdgjttgC:\Users\Admin\AppData\Local\Temp\fe270757a9e04664508fa0caa16ac1c01f228b37c68fd7a0b6fd12f17bf4fe5e.exe
C:\Windows\SysWOW64\svchost.exe
C:\Windows\system32\svchost.exe
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2156 -ip 2156
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2156 -s 204
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 488 -p 2156 -ip 2156
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2156 -s 212
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 58.55.71.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 22.160.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 91.90.14.23.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 149.220.183.52.in-addr.arpa | udp |
| NL | 52.142.223.178:80 | tcp | |
| US | 8.8.8.8:53 | 86.23.85.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 15.164.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.210.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 98.58.20.217.in-addr.arpa | udp |
Files
C:\Windows\SysWOW64\WinHelp65.exe
| MD5 | e1d841e767c86a2040999ab85c2524a2 |
| SHA1 | 502026ab19d886c5963dd51380c045460410b24b |
| SHA256 | 8fe6efc9cbe057c80c1b787635d2be69c81a1cd245d9c58015258ae147d05d85 |
| SHA512 | 5449b63633c7a7a77506e7ef5206f41c43f8fdcfeeca547f9b29604bd444873a45f3a76c8108441d6a2df54d40e14b47d0b092f1a037fd510308b4dd1aae70ea |
C:\Users\Admin\AppData\Local\Temp\240597265.reg
| MD5 | 3f6a6dfbe9006c162a83ce98be407903 |
| SHA1 | 56cf8e116970f4209e2317f61a15c89c48d66b14 |
| SHA256 | bc285a9dd73b745bde4223d046ca6fc398797b79a62bb5a99b19ea4e5fe2ff4e |
| SHA512 | 0a9d2030555ba64b0275881b5d96858313df91aee384ffacee519fbcf57c05dedf448bf65de5243359de1a013b79c28571d24499d6598d3741a6044d4addc03b |
memory/2156-6-0x0000000013150000-0x0000000013167000-memory.dmp