Analysis Overview
SHA256
a323a9891c15a533b2356c710a9610dcd764931b2122404d1278952d6a2611e1
Threat Level: Known bad
The file 0fb77a7f91ccadcee16b1f264b0a53df was found to be: Known bad.
Malicious Activity Summary
Quasar payload
Quasar RAT
Suspicious use of SetThreadContext
Unsigned PE
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Checks processor information in registry
Enumerates system info in registry
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2023-12-30 05:13
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2023-12-30 05:13
Reported
2024-01-01 00:46
Platform
win7-20231215-en
Max time kernel
119s
Max time network
120s
Command Line
Signatures
Quasar RAT
Quasar payload
| 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 |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 2212 set thread context of 2196 | N/A | C:\Users\Admin\AppData\Local\Temp\0fb77a7f91ccadcee16b1f264b0a53df.exe | C:\Users\Admin\AppData\Local\Temp\0fb77a7f91ccadcee16b1f264b0a53df.exe |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\0fb77a7f91ccadcee16b1f264b0a53df.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\0fb77a7f91ccadcee16b1f264b0a53df.exe
"C:\Users\Admin\AppData\Local\Temp\0fb77a7f91ccadcee16b1f264b0a53df.exe"
C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe
dw20.exe -x -s 388
C:\Users\Admin\AppData\Local\Temp\0fb77a7f91ccadcee16b1f264b0a53df.exe
C:\Users\Admin\AppData\Local\Temp\0fb77a7f91ccadcee16b1f264b0a53df.exe
Network
Files
memory/2212-0-0x0000000074B80000-0x000000007512B000-memory.dmp
memory/2196-2-0x0000000000400000-0x000000000045E000-memory.dmp
memory/2196-10-0x0000000002190000-0x00000000021D0000-memory.dmp
memory/2196-9-0x0000000074B80000-0x000000007512B000-memory.dmp
memory/2980-11-0x0000000002790000-0x0000000002791000-memory.dmp
memory/2212-8-0x0000000074B80000-0x000000007512B000-memory.dmp
memory/2196-7-0x0000000000400000-0x000000000045E000-memory.dmp
memory/2196-5-0x0000000000400000-0x000000000045E000-memory.dmp
memory/2212-3-0x0000000002060000-0x00000000020A0000-memory.dmp
memory/2212-1-0x0000000074B80000-0x000000007512B000-memory.dmp
memory/2196-13-0x0000000002190000-0x00000000021D0000-memory.dmp
memory/2196-12-0x0000000074B80000-0x000000007512B000-memory.dmp
memory/2980-14-0x0000000002790000-0x0000000002791000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2023-12-30 05:13
Reported
2024-01-01 00:47
Platform
win10v2004-20231215-en
Max time kernel
146s
Max time network
155s
Command Line
Signatures
Quasar RAT
Quasar payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 3960 set thread context of 1648 | N/A | C:\Users\Admin\AppData\Local\Temp\0fb77a7f91ccadcee16b1f264b0a53df.exe | C:\Users\Admin\AppData\Local\Temp\0fb77a7f91ccadcee16b1f264b0a53df.exe |
Checks processor information in registry
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz | C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString | C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe | N/A |
| Key opened | \REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0 | C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe | N/A |
Enumerates system info in registry
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU | C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe | N/A |
| Key opened | \REGISTRY\MACHINE\Hardware\Description\System\BIOS | C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\0fb77a7f91ccadcee16b1f264b0a53df.exe | N/A |
| Token: SeRestorePrivilege | N/A | C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe | N/A |
| Token: SeBackupPrivilege | N/A | C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe | N/A |
| Token: SeBackupPrivilege | N/A | C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe | N/A |
| Token: SeBackupPrivilege | N/A | C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\0fb77a7f91ccadcee16b1f264b0a53df.exe
"C:\Users\Admin\AppData\Local\Temp\0fb77a7f91ccadcee16b1f264b0a53df.exe"
C:\Users\Admin\AppData\Local\Temp\0fb77a7f91ccadcee16b1f264b0a53df.exe
C:\Users\Admin\AppData\Local\Temp\0fb77a7f91ccadcee16b1f264b0a53df.exe
C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe
dw20.exe -x -s 784
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 19.177.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | g.bing.com | udp |
| US | 204.79.197.200:443 | g.bing.com | tcp |
| US | 8.8.8.8:53 | 146.78.124.51.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 0.205.248.87.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 0.205.248.87.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 241.154.82.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 86.23.85.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 5.181.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 15.164.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 18.134.221.88.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 41.110.16.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 205.47.74.20.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 | 8.8.8.8:53 | 130.211.222.173.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 119.110.54.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 104.241.123.92.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 217.135.221.88.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 176.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 211.135.221.88.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 174.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 77.239.69.13.in-addr.arpa | udp |
Files
memory/3960-0-0x0000000074C60000-0x0000000075211000-memory.dmp
memory/3960-1-0x0000000074C60000-0x0000000075211000-memory.dmp
memory/3960-2-0x0000000001A20000-0x0000000001A30000-memory.dmp
memory/1648-3-0x0000000000400000-0x000000000045E000-memory.dmp
C:\Users\Admin\AppData\Local\Microsoft\CLR_v2.0_32\UsageLogs\0fb77a7f91ccadcee16b1f264b0a53df.exe.log
| MD5 | 687357bfbb063545265a73281a2bc5ba |
| SHA1 | ee498b21b89f9f47abd477ff19120f3b9cf43c69 |
| SHA256 | 23988e78ff35f3785d21d4d7e35336c4b9fea2b550a6252b9e19a460e8963a90 |
| SHA512 | 49b803bcbe231263eb5c5c188f69180ff56c520bb3021102dbdf731400c16ed3df70b3d3d2832919536c55bddd3a49cdfa26a565d264fe2b8e70d69d8d26a4a5 |
memory/1648-6-0x0000000074C60000-0x0000000075211000-memory.dmp
memory/3960-7-0x0000000074C60000-0x0000000075211000-memory.dmp
memory/1648-8-0x00000000014D0000-0x00000000014E0000-memory.dmp
memory/1648-9-0x0000000074C60000-0x0000000075211000-memory.dmp
memory/1648-16-0x0000000074C60000-0x0000000075211000-memory.dmp