Analysis Overview
SHA256
caf8a53c2a1bbc6169474702cd71a047176f4e4c78244e2a1c2a82352ca97c25
Threat Level: Known bad
The file 1e96b55fdd95824b3f3c5f2156be44c5_JaffaCakes118 was found to be: Known bad.
Malicious Activity Summary
Formbook family
Formbook
Formbook payload
Formbook payload
Executes dropped EXE
Loads dropped DLL
Suspicious use of SetThreadContext
Program crash
Unsigned PE
Suspicious use of AdjustPrivilegeToken
Suspicious behavior: MapViewOfSection
Suspicious use of WriteProcessMemory
Suspicious behavior: EnumeratesProcesses
MITRE ATT&CK
Analysis: static1
Detonation Overview
Reported
2024-05-06 22:36
Signatures
Formbook family
Formbook payload
| 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
2024-05-06 22:36
Reported
2024-05-06 22:38
Platform
win7-20240419-en
Max time kernel
150s
Max time network
120s
Command Line
Signatures
Formbook
Formbook payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
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Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\RegAsm.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\1e96b55fdd95824b3f3c5f2156be44c5_JaffaCakes118.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\RegAsm.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 2284 set thread context of 2748 | N/A | C:\Users\Admin\AppData\Local\Temp\1e96b55fdd95824b3f3c5f2156be44c5_JaffaCakes118.exe | C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe |
| PID 2748 set thread context of 3060 | N/A | C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe | C:\Users\Admin\AppData\Local\Temp\RegAsm.exe |
| PID 3060 set thread context of 1188 | N/A | C:\Users\Admin\AppData\Local\Temp\RegAsm.exe | C:\Windows\Explorer.EXE |
| PID 3060 set thread context of 1188 | N/A | C:\Users\Admin\AppData\Local\Temp\RegAsm.exe | C:\Windows\Explorer.EXE |
| PID 1452 set thread context of 1188 | N/A | C:\Windows\SysWOW64\cmstp.exe | C:\Windows\Explorer.EXE |
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\RegAsm.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\RegAsm.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\RegAsm.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\RegAsm.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\cmstp.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\cmstp.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\1e96b55fdd95824b3f3c5f2156be44c5_JaffaCakes118.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\RegAsm.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\SysWOW64\cmstp.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
C:\Users\Admin\AppData\Local\Temp\1e96b55fdd95824b3f3c5f2156be44c5_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\1e96b55fdd95824b3f3c5f2156be44c5_JaffaCakes118.exe"
C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe
"C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe"
C:\Users\Admin\AppData\Local\Temp\RegAsm.exe
"C:\Users\Admin\AppData\Local\Temp\RegAsm.exe"
C:\Windows\SysWOW64\cmstp.exe
"C:\Windows\SysWOW64\cmstp.exe"
C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\RegAsm.exe"
Network
Files
memory/2284-0-0x0000000073FBE000-0x0000000073FBF000-memory.dmp
memory/2284-1-0x0000000001140000-0x000000000127E000-memory.dmp
memory/2284-2-0x00000000004D0000-0x00000000004DA000-memory.dmp
memory/2284-3-0x0000000073FB0000-0x000000007469E000-memory.dmp
memory/2284-5-0x0000000073FB0000-0x000000007469E000-memory.dmp
memory/2284-6-0x0000000073FBE000-0x0000000073FBF000-memory.dmp
memory/2284-7-0x0000000073FB0000-0x000000007469E000-memory.dmp
memory/2284-8-0x00000000005C0000-0x00000000005C8000-memory.dmp
\Users\Admin\AppData\Local\Temp\InstallUtil.exe
| MD5 | 91c9ae9c9a17a9db5e08b120e668c74c |
| SHA1 | 50770954c1ceb0bb6f1d5d3f2de2a0a065773723 |
| SHA256 | e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f |
| SHA512 | ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e |
memory/2748-12-0x0000000000400000-0x000000000048E000-memory.dmp
memory/2748-19-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
memory/2748-18-0x0000000000400000-0x000000000048E000-memory.dmp
memory/2748-16-0x0000000000400000-0x000000000048E000-memory.dmp
memory/2748-14-0x0000000000400000-0x000000000048E000-memory.dmp
memory/2748-21-0x0000000000400000-0x000000000048E000-memory.dmp
memory/2748-24-0x0000000000400000-0x000000000048E000-memory.dmp
memory/2748-47-0x0000000000400000-0x000000000048E000-memory.dmp
memory/2748-50-0x0000000073FB0000-0x000000007469E000-memory.dmp
memory/2284-48-0x0000000073FB0000-0x000000007469E000-memory.dmp
memory/2748-45-0x0000000000400000-0x000000000048E000-memory.dmp
memory/2748-44-0x0000000000400000-0x000000000048E000-memory.dmp
memory/2748-41-0x0000000000400000-0x000000000048E000-memory.dmp
memory/2748-40-0x0000000000400000-0x000000000048E000-memory.dmp
memory/2748-38-0x0000000000400000-0x000000000048E000-memory.dmp
memory/2748-36-0x0000000000400000-0x000000000048E000-memory.dmp
memory/2748-28-0x0000000000400000-0x000000000048E000-memory.dmp
memory/2748-51-0x0000000073FB0000-0x000000007469E000-memory.dmp
memory/2748-52-0x0000000073FB0000-0x000000007469E000-memory.dmp
\Users\Admin\AppData\Local\Temp\RegAsm.exe
| MD5 | b58b926c3574d28d5b7fdd2ca3ec30d5 |
| SHA1 | d260c4ffd603a9cfc057fcb83d678b1cecdf86f9 |
| SHA256 | 6e70b56d748c4ccab13cc8a055d3795ea0dd95fe3b70568d7d3ac0c6621140a3 |
| SHA512 | b13cb998822b716b695013bcd6dec62a2290567d0d1743b2d982ca084235cf69c6ea1fc91c9d4e62657c6f9e102c7c60e81296ab055ffe43b887c5f8ec8958ab |
memory/3060-60-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
memory/3060-58-0x0000000000400000-0x000000000042D000-memory.dmp
memory/3060-56-0x0000000000400000-0x000000000042D000-memory.dmp
memory/3060-62-0x0000000000400000-0x000000000042D000-memory.dmp
memory/2748-66-0x0000000073FB0000-0x000000007469E000-memory.dmp
memory/1188-71-0x00000000046A0000-0x000000000475F000-memory.dmp
memory/3060-70-0x00000000001A0000-0x00000000001B4000-memory.dmp
memory/3060-69-0x0000000002730000-0x0000000002A33000-memory.dmp
memory/1188-68-0x0000000003AE0000-0x0000000003BE0000-memory.dmp
memory/3060-72-0x0000000000400000-0x000000000042D000-memory.dmp
memory/3060-74-0x0000000000230000-0x0000000000244000-memory.dmp
memory/1188-73-0x00000000046A0000-0x000000000475F000-memory.dmp
memory/1188-75-0x0000000004D70000-0x0000000004E89000-memory.dmp
memory/1452-76-0x0000000000AA0000-0x0000000000AB8000-memory.dmp
memory/3060-77-0x0000000000400000-0x000000000042D000-memory.dmp
memory/1452-78-0x0000000000AA0000-0x0000000000AB8000-memory.dmp
memory/1188-80-0x0000000004D70000-0x0000000004E89000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-05-06 22:36
Reported
2024-05-06 22:38
Platform
win10v2004-20240419-en
Max time kernel
138s
Max time network
151s
Command Line
Signatures
Formbook
Formbook 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 |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\RegAsm.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 3092 set thread context of 1940 | N/A | C:\Users\Admin\AppData\Local\Temp\1e96b55fdd95824b3f3c5f2156be44c5_JaffaCakes118.exe | C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe |
| PID 1940 set thread context of 4348 | N/A | C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe | C:\Users\Admin\AppData\Local\Temp\RegAsm.exe |
Program crash
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\Users\Admin\AppData\Local\Temp\RegAsm.exe |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\1e96b55fdd95824b3f3c5f2156be44c5_JaffaCakes118.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\1e96b55fdd95824b3f3c5f2156be44c5_JaffaCakes118.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\1e96b55fdd95824b3f3c5f2156be44c5_JaffaCakes118.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\1e96b55fdd95824b3f3c5f2156be44c5_JaffaCakes118.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\1e96b55fdd95824b3f3c5f2156be44c5_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\1e96b55fdd95824b3f3c5f2156be44c5_JaffaCakes118.exe"
C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe
"C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe"
C:\Users\Admin\AppData\Local\Temp\RegAsm.exe
"C:\Users\Admin\AppData\Local\Temp\RegAsm.exe"
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4348 -ip 4348
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4348 -s 540
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | g.bing.com | udp |
| US | 8.8.8.8:53 | 217.106.137.52.in-addr.arpa | udp |
| US | 204.79.197.237:443 | g.bing.com | tcp |
| US | 8.8.8.8:53 | 237.197.79.204.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 73.31.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 183.142.211.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 103.169.127.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 56.126.166.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 240.221.184.93.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 26.35.223.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 51.15.97.104.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 30.243.111.52.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 | 8.8.8.8:53 | 200.197.79.204.in-addr.arpa | udp |
Files
memory/3092-0-0x0000000074F2E000-0x0000000074F2F000-memory.dmp
memory/3092-1-0x0000000000E40000-0x0000000000F7E000-memory.dmp
memory/3092-2-0x0000000005F30000-0x00000000064D4000-memory.dmp
memory/3092-3-0x0000000003200000-0x000000000320A000-memory.dmp
memory/3092-4-0x0000000005A60000-0x0000000005AF2000-memory.dmp
memory/3092-5-0x0000000074F20000-0x00000000756D0000-memory.dmp
memory/3092-7-0x0000000074F20000-0x00000000756D0000-memory.dmp
memory/3092-8-0x0000000074F2E000-0x0000000074F2F000-memory.dmp
memory/3092-9-0x0000000074F20000-0x00000000756D0000-memory.dmp
memory/3092-10-0x0000000005C80000-0x0000000005C88000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe
| MD5 | 5d4073b2eb6d217c19f2b22f21bf8d57 |
| SHA1 | f0209900fbf08d004b886a0b3ba33ea2b0bf9da8 |
| SHA256 | ac1a3f21fcc88f9cee7bf51581eafba24cc76c924f0821deb2afdf1080ddf3d3 |
| SHA512 | 9ac94880684933ba3407cdc135abc3047543436567af14cd9269c4adc5a6535db7b867d6de0d6238a21b94e69f9890dbb5739155871a624520623a7e56872159 |
memory/1940-12-0x0000000000400000-0x000000000048E000-memory.dmp
memory/1940-27-0x0000000000400000-0x000000000048E000-memory.dmp
memory/3092-35-0x0000000074F20000-0x00000000756D0000-memory.dmp
memory/1940-36-0x0000000074F20000-0x00000000756D0000-memory.dmp
memory/1940-34-0x0000000000400000-0x000000000048E000-memory.dmp
memory/1940-32-0x0000000000400000-0x000000000048E000-memory.dmp
memory/1940-31-0x0000000000400000-0x000000000048E000-memory.dmp
memory/1940-28-0x0000000000400000-0x000000000048E000-memory.dmp
memory/1940-37-0x0000000074F20000-0x00000000756D0000-memory.dmp
memory/1940-25-0x0000000000400000-0x000000000048E000-memory.dmp
memory/1940-23-0x0000000000400000-0x000000000048E000-memory.dmp
memory/1940-39-0x0000000074F20000-0x00000000756D0000-memory.dmp
memory/1940-40-0x0000000074F20000-0x00000000756D0000-memory.dmp
memory/4348-43-0x0000000000580000-0x00000000005AD000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\RegAsm.exe
| MD5 | 0d5df43af2916f47d00c1573797c1a13 |
| SHA1 | 230ab5559e806574d26b4c20847c368ed55483b0 |
| SHA256 | c066aee7aa3aa83f763ebc5541daa266ed6c648fbffcde0d836a13b221bb2adc |
| SHA512 | f96cf9e1890746b12daf839a6d0f16f062b72c1b8a40439f96583f242980f10f867720232a6fa0f7d4d7ac0a7a6143981a5a130d6417ea98b181447134c7cfe2 |
memory/1940-47-0x0000000074F20000-0x00000000756D0000-memory.dmp