Analysis Overview
SHA256
b312190adff333d7172e87d01dbb298ad7dbac987a6ad489fca561366161ee98
Threat Level: Known bad
The file 28615260996f2ee3bf717734f6714014_JaffaCakes118 was found to be: Known bad.
Malicious Activity Summary
Remcos
Executes dropped EXE
Loads dropped DLL
Checks computer location settings
Adds Run key to start application
Suspicious use of SetThreadContext
Drops file in Windows directory
Enumerates physical storage devices
Unsigned PE
Suspicious use of SetWindowsHookEx
Modifies registry class
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-05-09 04:53
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-05-09 04:53
Reported
2024-05-09 04:57
Platform
win7-20240508-en
Max time kernel
150s
Max time network
121s
Command Line
Signatures
Remcos
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Rem5\Rem5.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\cmd.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\cmd.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-2737914667-933161113-3798636211-1000\Software\Microsoft\Windows\CurrentVersion\Run\LKJhgtYGS = "\"C:\\Users\\Admin\\AppData\\Roaming\\Rem5\\Rem5.exe\"" | C:\Users\Admin\AppData\Local\Temp\28615260996f2ee3bf717734f6714014_JaffaCakes118.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-2737914667-933161113-3798636211-1000\Software\Microsoft\Windows\CurrentVersion\Run\LKJhgtYGS = "\"C:\\Users\\Admin\\AppData\\Roaming\\Rem5\\Rem5.exe\"" | C:\Users\Admin\AppData\Roaming\Rem5\Rem5.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 2468 set thread context of 2628 | N/A | C:\Users\Admin\AppData\Roaming\Rem5\Rem5.exe | C:\Windows\SysWOW64\svchost.exe |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Windows\win.ini | C:\Users\Admin\AppData\Local\Temp\28615260996f2ee3bf717734f6714014_JaffaCakes118.exe | N/A |
| File opened for modification | C:\Windows\win.ini | C:\Users\Admin\AppData\Roaming\Rem5\Rem5.exe | N/A |
| File opened for modification | C:\Windows\win.ini | C:\Windows\SysWOW64\svchost.exe | N/A |
Enumerates physical storage devices
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\28615260996f2ee3bf717734f6714014_JaffaCakes118.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Rem5\Rem5.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Rem5\Rem5.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\svchost.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\28615260996f2ee3bf717734f6714014_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\28615260996f2ee3bf717734f6714014_JaffaCakes118.exe"
C:\Windows\SysWOW64\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\install.vbs"
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c "C:\Users\Admin\AppData\Roaming\Rem5\Rem5.exe"
C:\Users\Admin\AppData\Roaming\Rem5\Rem5.exe
C:\Users\Admin\AppData\Roaming\Rem5\Rem5.exe
C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | camglass.sytes.net | udp |
| US | 8.8.8.8:53 | camvips.ddns.net | udp |
Files
memory/2432-3-0x00000000004D0000-0x00000000005D0000-memory.dmp
memory/2432-5-0x0000000002B90000-0x0000000002C90000-memory.dmp
memory/2432-6-0x00000000771A1000-0x00000000772A2000-memory.dmp
memory/2432-7-0x00000000771A0000-0x0000000077349000-memory.dmp
memory/2432-8-0x0000000000400000-0x000000000045A000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\install.vbs
| MD5 | 4b309959125fb954b68968bad5bed9ac |
| SHA1 | b2b805fa81f1b82fa07b718031c9a89046731146 |
| SHA256 | 109742373d7cca30b46ef4b05d9b86694e2a54f862afd891e7bba50cf0f18830 |
| SHA512 | 9d90d6f5085ac7103aee6679272b677589afe3a50835152f3c1f799080e38b975f3c246d6649926a80a7ee3bbcabf755d6a20cf768083714a359bc9a5af9cf92 |
C:\Users\Admin\AppData\Roaming\Rem5\Rem5.exe
| MD5 | 28615260996f2ee3bf717734f6714014 |
| SHA1 | 4d974c30ad0b91bbb81a3f4684d4c8216b602608 |
| SHA256 | b312190adff333d7172e87d01dbb298ad7dbac987a6ad489fca561366161ee98 |
| SHA512 | af93cc53e0b2299c63247e44c9ad25d065f23a7409657d40e2326f578c10022f58bc2344574c85caad1bfdf3fce65ac18742726b1ed0983a91898a2d30ee75af |
C:\Windows\win.ini
| MD5 | 8e6100faa270f8b935ebba91ae814491 |
| SHA1 | 1b5d16ec7d3f2ed289fc4c079fed992275578257 |
| SHA256 | 293b109535400cdd3eb36c8a47dcdda245e8f48200aa59bfddb21d105923e93b |
| SHA512 | 78b36ef3fd77d991d7ef9aa4f900f653edb1df5ab6ddbc369e0b3b3430fba9074673bf67d208cbb885b41afd3a9cd26ae9c2b392c70df7d08f055a41318469e7 |
memory/2468-26-0x0000000000400000-0x000000000045A000-memory.dmp
memory/2628-38-0x0000000000400000-0x000000000045A000-memory.dmp
memory/2628-37-0x0000000000400000-0x000000000045A000-memory.dmp
memory/2628-28-0x0000000000400000-0x000000000045A000-memory.dmp
memory/2628-36-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
memory/2628-32-0x0000000000400000-0x000000000045A000-memory.dmp
memory/2628-30-0x0000000000400000-0x000000000045A000-memory.dmp
memory/2628-44-0x0000000000400000-0x000000000045A000-memory.dmp
C:\Users\Admin\AppData\Roaming\Rem5\logs.dat
| MD5 | 92f856c65b267b7d3aad33c26fb0d690 |
| SHA1 | eb1bb43829613f9013af46793784c67d4a8faad1 |
| SHA256 | 9cbcaa5d0bf91bdb48c540d45cd5d3c257f3ec56de6f40b01c8ed5d19b73ddf9 |
| SHA512 | 384bee97278cbd1f19717a1eb35b32c73b8ae34f4746c1782330c3328c5eea7d9cfb55051856c997cb55e7853e1050c8363c334d9dee127eaf2453775ddaac40 |
Analysis: behavioral2
Detonation Overview
Submitted
2024-05-09 04:53
Reported
2024-05-09 04:58
Platform
win10v2004-20240226-en
Max time kernel
153s
Max time network
163s
Command Line
Signatures
Remcos
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\28615260996f2ee3bf717734f6714014_JaffaCakes118.exe | N/A |
| Key value queried | \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation | C:\Windows\SysWOW64\WScript.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Rem5\Rem5.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\LKJhgtYGS = "\"C:\\Users\\Admin\\AppData\\Roaming\\Rem5\\Rem5.exe\"" | C:\Users\Admin\AppData\Local\Temp\28615260996f2ee3bf717734f6714014_JaffaCakes118.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\LKJhgtYGS = "\"C:\\Users\\Admin\\AppData\\Roaming\\Rem5\\Rem5.exe\"" | C:\Users\Admin\AppData\Roaming\Rem5\Rem5.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 4308 set thread context of 540 | N/A | C:\Users\Admin\AppData\Roaming\Rem5\Rem5.exe | C:\Windows\SysWOW64\svchost.exe |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Windows\win.ini | C:\Users\Admin\AppData\Local\Temp\28615260996f2ee3bf717734f6714014_JaffaCakes118.exe | N/A |
| File opened for modification | C:\Windows\win.ini | C:\Users\Admin\AppData\Roaming\Rem5\Rem5.exe | N/A |
| File opened for modification | C:\Windows\win.ini | C:\Windows\SysWOW64\svchost.exe | N/A |
Enumerates physical storage devices
Modifies registry class
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000_Classes\Local Settings | C:\Users\Admin\AppData\Local\Temp\28615260996f2ee3bf717734f6714014_JaffaCakes118.exe | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\28615260996f2ee3bf717734f6714014_JaffaCakes118.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Rem5\Rem5.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Rem5\Rem5.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\svchost.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\28615260996f2ee3bf717734f6714014_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\28615260996f2ee3bf717734f6714014_JaffaCakes118.exe"
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=4160 --field-trial-handle=3084,i,4016110471176367543,14287608422419064331,262144 --variations-seed-version /prefetch:8
C:\Windows\SysWOW64\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\install.vbs"
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c "C:\Users\Admin\AppData\Roaming\Rem5\Rem5.exe"
C:\Users\Admin\AppData\Roaming\Rem5\Rem5.exe
C:\Users\Admin\AppData\Roaming\Rem5\Rem5.exe
C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 241.150.49.20.in-addr.arpa | udp |
| US | 13.107.253.64:443 | tcp | |
| US | 8.8.8.8:53 | 103.169.127.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 198.187.3.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 24.121.18.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 159.113.53.23.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 178.223.142.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 64.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 228.249.119.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 154.239.44.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | camglass.sytes.net | udp |
| US | 8.8.8.8:53 | camvips.ddns.net | udp |
| US | 8.8.8.8:53 | camvips.ddns.net | udp |
| US | 8.8.8.8:53 | camvips.ddns.net | udp |
| US | 8.8.8.8:53 | camvips.ddns.net | udp |
| US | 8.8.8.8:53 | camvips.ddns.net | udp |
| US | 8.8.8.8:53 | camvips.ddns.net | udp |
| US | 8.8.8.8:53 | camvips.ddns.net | udp |
| US | 8.8.8.8:53 | 28.173.189.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | camvips.ddns.net | udp |
| US | 8.8.8.8:53 | camvips.ddns.net | udp |
| US | 8.8.8.8:53 | camvips.ddns.net | udp |
Files
memory/4452-3-0x0000000000630000-0x0000000000730000-memory.dmp
memory/4452-5-0x0000000002BF0000-0x0000000002CF0000-memory.dmp
memory/4452-6-0x0000000077751000-0x0000000077871000-memory.dmp
memory/4452-7-0x0000000000400000-0x000000000045A000-memory.dmp
memory/4452-9-0x0000000000401000-0x0000000000402000-memory.dmp
memory/4452-13-0x0000000000630000-0x0000000000730000-memory.dmp
memory/4452-15-0x0000000002BF0000-0x0000000002CF0000-memory.dmp
memory/4452-16-0x0000000077751000-0x0000000077871000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\install.vbs
| MD5 | 4b309959125fb954b68968bad5bed9ac |
| SHA1 | b2b805fa81f1b82fa07b718031c9a89046731146 |
| SHA256 | 109742373d7cca30b46ef4b05d9b86694e2a54f862afd891e7bba50cf0f18830 |
| SHA512 | 9d90d6f5085ac7103aee6679272b677589afe3a50835152f3c1f799080e38b975f3c246d6649926a80a7ee3bbcabf755d6a20cf768083714a359bc9a5af9cf92 |
C:\Users\Admin\AppData\Roaming\Rem5\Rem5.exe
| MD5 | 28615260996f2ee3bf717734f6714014 |
| SHA1 | 4d974c30ad0b91bbb81a3f4684d4c8216b602608 |
| SHA256 | b312190adff333d7172e87d01dbb298ad7dbac987a6ad489fca561366161ee98 |
| SHA512 | af93cc53e0b2299c63247e44c9ad25d065f23a7409657d40e2326f578c10022f58bc2344574c85caad1bfdf3fce65ac18742726b1ed0983a91898a2d30ee75af |
memory/4308-29-0x0000000000400000-0x000000000045A000-memory.dmp
C:\Windows\win.ini
| MD5 | d41d8cd98f00b204e9800998ecf8427e |
| SHA1 | da39a3ee5e6b4b0d3255bfef95601890afd80709 |
| SHA256 | e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855 |
| SHA512 | cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e |
memory/4308-32-0x0000000000400000-0x000000000045A000-memory.dmp
memory/4308-34-0x0000000000400000-0x000000000045A000-memory.dmp
memory/4308-36-0x0000000000400000-0x000000000045A000-memory.dmp
memory/4308-35-0x0000000000400000-0x000000000045A000-memory.dmp
memory/540-37-0x0000000000400000-0x000000000045A000-memory.dmp
memory/540-38-0x0000000000400000-0x000000000045A000-memory.dmp
C:\Windows\win.ini
| MD5 | fe0c4d84684551dc6429860c8e769578 |
| SHA1 | f181d3731695af4873cb9ccd41098b0bd7e7a98d |
| SHA256 | e5aeb321c075f20134653784a42065464384b29690205bb2333446ade115f690 |
| SHA512 | 74781dbc7d17392e43679b3f138885fa38bd040d9abbe676994df785877011d7dc75a9066f00c06d5020cdae461b76fa562888484fc53ef79414c54e035971c2 |
memory/540-44-0x0000000000400000-0x000000000045A000-memory.dmp
memory/4308-51-0x0000000000400000-0x000000000045A000-memory.dmp
memory/4308-52-0x0000000000400000-0x000000000045A000-memory.dmp
memory/4308-53-0x0000000000400000-0x000000000045A000-memory.dmp
C:\Users\Admin\AppData\Roaming\Rem5\logs.dat
| MD5 | e73f523f12c59e8f942d3bab6d2856f1 |
| SHA1 | 3b6da83a2b6137714778ae13ee0d5cb68af1bdb1 |
| SHA256 | cf8af72752d55e70fbf56ab62915710fb0f1f3fdc75a163022cedf99cc9ecc59 |
| SHA512 | 2154d2b502440da69a5688df3f7473371045caa3f1f0fc078a68ae7edeefab0fdd83c52a5f06f83dfb73f6e146fab9ffc37a1c1794623c24d6b319d19fdc0bc8 |