Analysis Overview
SHA256
4b88ca8115abf6400f900d9eeadd9793806c3c4314868bb6080e88b697ecef1a
Threat Level: Known bad
The file NA_4b88ca8115abf6400f900d9ee_JC.js was found to be: Known bad.
Malicious Activity Summary
WSHRAT payload
WSHRAT
Blocklisted process makes network request
Executes dropped EXE
Checks computer location settings
Drops startup file
Adds Run key to start application
Looks up external IP address via web service
Suspicious use of SetThreadContext
Enumerates physical storage devices
Modifies registry class
Suspicious use of WriteProcessMemory
Suspicious use of AdjustPrivilegeToken
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2023-07-26 13:36
Signatures
Analysis: behavioral2
Detonation Overview
Submitted
2023-07-26 13:36
Reported
2023-07-26 13:38
Platform
win10v2004-20230703-en
Max time kernel
12s
Max time network
27s
Command Line
Signatures
WSHRAT
WSHRAT payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Blocklisted process makes network request
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system32\wscript.exe | N/A |
| N/A | N/A | C:\Windows\system32\wscript.exe | N/A |
| N/A | N/A | C:\Windows\system32\wscript.exe | N/A |
| N/A | N/A | C:\Windows\System32\WScript.exe | N/A |
| N/A | N/A | C:\Windows\System32\WScript.exe | N/A |
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-1043950675-1972537973-2972532878-1000\Control Panel\International\Geo\Nation | C:\Windows\system32\wscript.exe | N/A |
| Key value queried | \REGISTRY\USER\S-1-5-21-1043950675-1972537973-2972532878-1000\Control Panel\International\Geo\Nation | C:\Windows\System32\WScript.exe | N/A |
Drops startup file
| Description | Indicator | Process | Target |
| File created | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\TDSRZR.vbs | C:\Windows\System32\WScript.exe | N/A |
| File opened for modification | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\TDSRZR.vbs | C:\Windows\System32\WScript.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\svchost.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\svchost.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\TDSRZR = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Local\\Temp\\TDSRZR.vbs\"" | C:\Windows\System32\WScript.exe | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-1043950675-1972537973-2972532878-1000\software\microsoft\windows\currentversion\run | C:\Windows\System32\WScript.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-1043950675-1972537973-2972532878-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\TDSRZR = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Local\\Temp\\TDSRZR.vbs\"" | C:\Windows\System32\WScript.exe | N/A |
| Key created | \REGISTRY\MACHINE\software\microsoft\windows\currentversion\run | C:\Windows\System32\WScript.exe | N/A |
Looks up external IP address via web service
| Description | Indicator | Process | Target |
| N/A | ip-api.com | N/A | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 2140 set thread context of 1540 | N/A | C:\Users\Admin\AppData\Local\Temp\svchost.exe | C:\Users\Admin\AppData\Local\Temp\svchost.exe |
Enumerates physical storage devices
Modifies registry class
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\USER\S-1-5-21-1043950675-1972537973-2972532878-1000_Classes\Local Settings | C:\Windows\system32\wscript.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\svchost.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\NA_4b88ca8115abf6400f900d9ee_JC.js
C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\TDSRZR.vbs"
C:\Users\Admin\AppData\Local\Temp\svchost.exe
"C:\Users\Admin\AppData\Local\Temp\svchost.exe"
C:\Users\Admin\AppData\Local\Temp\svchost.exe
"C:\Users\Admin\AppData\Local\Temp\svchost.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | grapemundo.com | udp |
| IN | 103.50.163.157:443 | grapemundo.com | tcp |
| US | 8.8.8.8:53 | 158.240.127.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 8.3.197.209.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 157.163.50.103.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 139.228.2.23.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 215.74.101.95.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 73.31.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | ip-api.com | udp |
| US | 208.95.112.1:80 | ip-api.com | tcp |
| US | 8.8.8.8:53 | chongmei33.publicvm.com | udp |
| US | 8.8.8.8:53 | 1.112.95.208.in-addr.arpa | udp |
| SG | 103.47.144.81:7045 | chongmei33.publicvm.com | tcp |
| US | 8.8.8.8:53 | 146.78.124.51.in-addr.arpa | udp |
Files
C:\Users\Admin\AppData\Local\Temp\TDSRZR.vbs
| MD5 | b4e275c4a325bf17b288ea6c854bd212 |
| SHA1 | ddce3daa82a4015984bce3299df5d271b1323818 |
| SHA256 | 038338d42952e0223dbdd077fa5b0cc4b0fe7309767a3ee5afebbbc34325fede |
| SHA512 | 92a0d1052f0b0b38e691ef5858cdcdd29a41bdea29a91eeccd1f2c1c0eccfceeddfdd34d500c6a5be806db46d297bdc6e0a0ec81e64131bd837c28daac5ea452 |
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\TDSRZR.vbs
| MD5 | b4e275c4a325bf17b288ea6c854bd212 |
| SHA1 | ddce3daa82a4015984bce3299df5d271b1323818 |
| SHA256 | 038338d42952e0223dbdd077fa5b0cc4b0fe7309767a3ee5afebbbc34325fede |
| SHA512 | 92a0d1052f0b0b38e691ef5858cdcdd29a41bdea29a91eeccd1f2c1c0eccfceeddfdd34d500c6a5be806db46d297bdc6e0a0ec81e64131bd837c28daac5ea452 |
C:\Users\Admin\AppData\Local\Temp\svchost.exe
| MD5 | fa69bac4daea669b2d78160d164e64c9 |
| SHA1 | 77e7fbdba131f0cc1fbbf3d717dc38041e6ad84f |
| SHA256 | dcea423e04900e53f42a70574841d10cb7b3cd168d64d92a58da864079dc394e |
| SHA512 | ddf7f040d0d8a3f98dee9591220bd208b83b0f2aa3fd4b783446c72e8d07a73a2826964a98b512f41796f2d2cc11b4ce18df0c989a45f60bfbbacdc60ea14b45 |
C:\Users\Admin\AppData\Local\Temp\svchost.exe
| MD5 | fa69bac4daea669b2d78160d164e64c9 |
| SHA1 | 77e7fbdba131f0cc1fbbf3d717dc38041e6ad84f |
| SHA256 | dcea423e04900e53f42a70574841d10cb7b3cd168d64d92a58da864079dc394e |
| SHA512 | ddf7f040d0d8a3f98dee9591220bd208b83b0f2aa3fd4b783446c72e8d07a73a2826964a98b512f41796f2d2cc11b4ce18df0c989a45f60bfbbacdc60ea14b45 |
C:\Users\Admin\AppData\Local\Temp\svchost.exe
| MD5 | fa69bac4daea669b2d78160d164e64c9 |
| SHA1 | 77e7fbdba131f0cc1fbbf3d717dc38041e6ad84f |
| SHA256 | dcea423e04900e53f42a70574841d10cb7b3cd168d64d92a58da864079dc394e |
| SHA512 | ddf7f040d0d8a3f98dee9591220bd208b83b0f2aa3fd4b783446c72e8d07a73a2826964a98b512f41796f2d2cc11b4ce18df0c989a45f60bfbbacdc60ea14b45 |
memory/2140-157-0x00000000750A0000-0x0000000075850000-memory.dmp
memory/2140-158-0x0000000000C40000-0x0000000000CFA000-memory.dmp
memory/2140-159-0x00000000063B0000-0x0000000006954000-memory.dmp
memory/2140-161-0x0000000005E00000-0x0000000005E92000-memory.dmp
memory/2140-162-0x0000000006320000-0x0000000006332000-memory.dmp
memory/2140-163-0x0000000006A00000-0x0000000006A9C000-memory.dmp
memory/2140-164-0x0000000006340000-0x0000000006363000-memory.dmp
memory/2140-165-0x0000000006340000-0x0000000006363000-memory.dmp
memory/2140-169-0x0000000006340000-0x0000000006363000-memory.dmp
memory/2140-167-0x0000000006340000-0x0000000006363000-memory.dmp
memory/2140-171-0x0000000006340000-0x0000000006363000-memory.dmp
memory/2140-173-0x0000000006340000-0x0000000006363000-memory.dmp
memory/2140-175-0x0000000006340000-0x0000000006363000-memory.dmp
memory/2140-177-0x0000000006340000-0x0000000006363000-memory.dmp
memory/2140-179-0x0000000006340000-0x0000000006363000-memory.dmp
memory/2140-181-0x0000000006340000-0x0000000006363000-memory.dmp
memory/2140-183-0x0000000006340000-0x0000000006363000-memory.dmp
memory/2140-185-0x0000000006340000-0x0000000006363000-memory.dmp
memory/2140-187-0x0000000006340000-0x0000000006363000-memory.dmp
memory/2140-189-0x0000000006340000-0x0000000006363000-memory.dmp
memory/2140-193-0x0000000006340000-0x0000000006363000-memory.dmp
memory/2140-191-0x0000000006340000-0x0000000006363000-memory.dmp
memory/2140-195-0x0000000006340000-0x0000000006363000-memory.dmp
memory/2140-197-0x0000000006340000-0x0000000006363000-memory.dmp
memory/2140-199-0x0000000006340000-0x0000000006363000-memory.dmp
memory/2140-201-0x0000000006340000-0x0000000006363000-memory.dmp
memory/2140-203-0x0000000006340000-0x0000000006363000-memory.dmp
memory/2140-205-0x0000000006340000-0x0000000006363000-memory.dmp
memory/2140-207-0x0000000006340000-0x0000000006363000-memory.dmp
memory/2140-209-0x0000000006340000-0x0000000006363000-memory.dmp
memory/2140-211-0x0000000006340000-0x0000000006363000-memory.dmp
memory/2140-213-0x0000000006340000-0x0000000006363000-memory.dmp
memory/2140-214-0x0000000006380000-0x0000000006381000-memory.dmp
memory/1540-215-0x0000000000400000-0x0000000000444000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\svchost.exe
| MD5 | fa69bac4daea669b2d78160d164e64c9 |
| SHA1 | 77e7fbdba131f0cc1fbbf3d717dc38041e6ad84f |
| SHA256 | dcea423e04900e53f42a70574841d10cb7b3cd168d64d92a58da864079dc394e |
| SHA512 | ddf7f040d0d8a3f98dee9591220bd208b83b0f2aa3fd4b783446c72e8d07a73a2826964a98b512f41796f2d2cc11b4ce18df0c989a45f60bfbbacdc60ea14b45 |
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\svchost.exe.log
| MD5 | add49c9ba7072711d6da25976d348247 |
| SHA1 | 754edca64e1a053a8ca357b40e8a7a4ff5fea217 |
| SHA256 | 361f4c916558316756d415bd64821ef1eead2d451e5d9cc38fe533b0f56574a6 |
| SHA512 | a95f88d0ca27b69636ed9a12f5b40d0abe1568415f41c57848f251dc55a5b0dbd015f15a2ff1c7aa4bc92b98d0d9c99a4bb814f49ff2319132b552af09a533ef |
memory/2140-219-0x00000000750A0000-0x0000000075850000-memory.dmp
memory/1540-220-0x00000000750A0000-0x0000000075850000-memory.dmp
Analysis: behavioral1
Detonation Overview
Submitted
2023-07-26 13:36
Reported
2023-07-26 13:38
Platform
win7-20230712-en
Max time kernel
120s
Max time network
123s
Command Line
Signatures
Blocklisted process makes network request
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system32\wscript.exe | N/A |
| N/A | N/A | C:\Windows\system32\wscript.exe | N/A |
| N/A | N/A | C:\Windows\system32\wscript.exe | N/A |
| N/A | N/A | C:\Windows\system32\wscript.exe | N/A |
Processes
C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\NA_4b88ca8115abf6400f900d9ee_JC.js
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | grapemundo.com | udp |
| IN | 103.50.163.157:443 | grapemundo.com | tcp |
| IN | 103.50.163.157:443 | grapemundo.com | tcp |
| IN | 103.50.163.157:443 | grapemundo.com | tcp |
| IN | 103.50.163.157:443 | grapemundo.com | tcp |