Analysis Overview
SHA256
4a417963968601bbe8f9311d779d1a022a380829bed4b7af4daf934eeba5c70f
Threat Level: Known bad
The file ac4ad219921aa13ac020f5dc460ad503_JaffaCakes118 was found to be: Known bad.
Malicious Activity Summary
Emotet
Drops file in System32 directory
Enumerates physical storage devices
Unsigned PE
Modifies data under HKEY_USERS
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: RenamesItself
Suspicious use of WriteProcessMemory
MITRE ATT&CK Matrix V13
Analysis: static1
Detonation Overview
Reported
2024-06-15 00:47
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-06-15 00:47
Reported
2024-06-15 00:49
Platform
win7-20240221-en
Max time kernel
149s
Max time network
150s
Command Line
Signatures
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\Temporary Internet Files\counters.dat | C:\Windows\SysWOW64\stepsimp.exe | N/A |
Enumerates physical storage devices
Modifies data under HKEY_USERS
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\b6-eb-7e-51-d1-c6 | C:\Windows\SysWOW64\stepsimp.exe | N/A |
| Key created | \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings | C:\Windows\SysWOW64\stepsimp.exe | N/A |
| Set value (data) | \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 | C:\Windows\SysWOW64\stepsimp.exe | N/A |
| Key created | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings | C:\Windows\SysWOW64\stepsimp.exe | N/A |
| Key created | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad | C:\Windows\SysWOW64\stepsimp.exe | N/A |
| Set value (data) | \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f0117000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 | C:\Windows\SysWOW64\stepsimp.exe | N/A |
| Set value (int) | \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0" | C:\Windows\SysWOW64\stepsimp.exe | N/A |
| Set value (data) | \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 | C:\Windows\SysWOW64\stepsimp.exe | N/A |
| Set value (int) | \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{E38402DF-3D1C-46FF-9F71-7B7F06D441B3}\WpadDecisionReason = "1" | C:\Windows\SysWOW64\stepsimp.exe | N/A |
| Set value (data) | \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{E38402DF-3D1C-46FF-9F71-7B7F06D441B3}\WpadDecisionTime = d06bad9fbdbeda01 | C:\Windows\SysWOW64\stepsimp.exe | N/A |
| Set value (data) | \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\b6-eb-7e-51-d1-c6\WpadDecisionTime = d06bad9fbdbeda01 | C:\Windows\SysWOW64\stepsimp.exe | N/A |
| Set value (int) | \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{E38402DF-3D1C-46FF-9F71-7B7F06D441B3}\WpadDecision = "0" | C:\Windows\SysWOW64\stepsimp.exe | N/A |
| Set value (str) | \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\b6-eb-7e-51-d1-c6\WpadDetectedUrl | C:\Windows\SysWOW64\stepsimp.exe | N/A |
| Set value (int) | \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\b6-eb-7e-51-d1-c6\WpadDecision = "0" | C:\Windows\SysWOW64\stepsimp.exe | N/A |
| Key created | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections | C:\Windows\SysWOW64\stepsimp.exe | N/A |
| Key created | \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{E38402DF-3D1C-46FF-9F71-7B7F06D441B3} | C:\Windows\SysWOW64\stepsimp.exe | N/A |
| Set value (str) | \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{E38402DF-3D1C-46FF-9F71-7B7F06D441B3}\WpadNetworkName = "Network 3" | C:\Windows\SysWOW64\stepsimp.exe | N/A |
| Key created | \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{E38402DF-3D1C-46FF-9F71-7B7F06D441B3}\b6-eb-7e-51-d1-c6 | C:\Windows\SysWOW64\stepsimp.exe | N/A |
| Set value (int) | \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\b6-eb-7e-51-d1-c6\WpadDecisionReason = "1" | C:\Windows\SysWOW64\stepsimp.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\ac4ad219921aa13ac020f5dc460ad503_JaffaCakes118.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\ac4ad219921aa13ac020f5dc460ad503_JaffaCakes118.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\stepsimp.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\stepsimp.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\stepsimp.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\stepsimp.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\stepsimp.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\stepsimp.exe | N/A |
Suspicious behavior: RenamesItself
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\ac4ad219921aa13ac020f5dc460ad503_JaffaCakes118.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\ac4ad219921aa13ac020f5dc460ad503_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\ac4ad219921aa13ac020f5dc460ad503_JaffaCakes118.exe"
C:\Users\Admin\AppData\Local\Temp\ac4ad219921aa13ac020f5dc460ad503_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\ac4ad219921aa13ac020f5dc460ad503_JaffaCakes118.exe"
C:\Windows\SysWOW64\stepsimp.exe
"C:\Windows\SysWOW64\stepsimp.exe"
C:\Windows\SysWOW64\stepsimp.exe
"C:\Windows\SysWOW64\stepsimp.exe"
Network
| Country | Destination | Domain | Proto |
| US | 98.6.40.86:8080 | tcp | |
| US | 98.6.40.86:8080 | tcp | |
| CN | 114.55.106.210:443 | tcp | |
| CN | 114.55.106.210:443 | tcp | |
| CA | 54.39.179.152:80 | tcp | |
| CA | 54.39.179.152:80 | tcp | |
| SA | 128.234.190.116:8090 | tcp |
Files
memory/2164-0-0x00000000008D0000-0x00000000008E7000-memory.dmp
memory/2164-4-0x00000000008D0000-0x00000000008E7000-memory.dmp
memory/2164-6-0x0000000000230000-0x0000000000240000-memory.dmp
memory/2164-5-0x0000000000210000-0x0000000000227000-memory.dmp
memory/2572-7-0x00000000001B0000-0x00000000001C7000-memory.dmp
memory/2572-13-0x00000000001E0000-0x00000000001F0000-memory.dmp
memory/2572-12-0x0000000000190000-0x00000000001A7000-memory.dmp
memory/2572-11-0x00000000001B0000-0x00000000001C7000-memory.dmp
memory/2164-14-0x0000000000210000-0x0000000000227000-memory.dmp
memory/2600-19-0x0000000000270000-0x0000000000287000-memory.dmp
memory/2600-15-0x0000000000270000-0x0000000000287000-memory.dmp
memory/2600-21-0x0000000000290000-0x00000000002A0000-memory.dmp
memory/2600-20-0x0000000000250000-0x0000000000267000-memory.dmp
memory/2540-27-0x0000000000290000-0x00000000002A7000-memory.dmp
memory/2540-26-0x00000000002B0000-0x00000000002C7000-memory.dmp
memory/2540-28-0x00000000002D0000-0x00000000002E0000-memory.dmp
memory/2540-22-0x00000000002B0000-0x00000000002C7000-memory.dmp
memory/2600-29-0x0000000000250000-0x0000000000267000-memory.dmp
memory/2572-30-0x0000000000CE0000-0x0000000000D44000-memory.dmp
memory/2572-31-0x0000000000190000-0x00000000001A7000-memory.dmp
memory/2540-32-0x0000000000290000-0x00000000002A7000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-06-15 00:47
Reported
2024-06-15 00:49
Platform
win10v2004-20240611-en
Max time kernel
144s
Max time network
140s
Command Line
Signatures
Emotet
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: RenamesItself
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\ac4ad219921aa13ac020f5dc460ad503_JaffaCakes118.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 3380 wrote to memory of 652 | N/A | C:\Users\Admin\AppData\Local\Temp\ac4ad219921aa13ac020f5dc460ad503_JaffaCakes118.exe | C:\Users\Admin\AppData\Local\Temp\ac4ad219921aa13ac020f5dc460ad503_JaffaCakes118.exe |
| PID 3380 wrote to memory of 652 | N/A | C:\Users\Admin\AppData\Local\Temp\ac4ad219921aa13ac020f5dc460ad503_JaffaCakes118.exe | C:\Users\Admin\AppData\Local\Temp\ac4ad219921aa13ac020f5dc460ad503_JaffaCakes118.exe |
| PID 3380 wrote to memory of 652 | N/A | C:\Users\Admin\AppData\Local\Temp\ac4ad219921aa13ac020f5dc460ad503_JaffaCakes118.exe | C:\Users\Admin\AppData\Local\Temp\ac4ad219921aa13ac020f5dc460ad503_JaffaCakes118.exe |
| PID 3188 wrote to memory of 3800 | N/A | C:\Windows\SysWOW64\readmerunning.exe | C:\Windows\SysWOW64\readmerunning.exe |
| PID 3188 wrote to memory of 3800 | N/A | C:\Windows\SysWOW64\readmerunning.exe | C:\Windows\SysWOW64\readmerunning.exe |
| PID 3188 wrote to memory of 3800 | N/A | C:\Windows\SysWOW64\readmerunning.exe | C:\Windows\SysWOW64\readmerunning.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\ac4ad219921aa13ac020f5dc460ad503_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\ac4ad219921aa13ac020f5dc460ad503_JaffaCakes118.exe"
C:\Users\Admin\AppData\Local\Temp\ac4ad219921aa13ac020f5dc460ad503_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\ac4ad219921aa13ac020f5dc460ad503_JaffaCakes118.exe"
C:\Windows\SysWOW64\readmerunning.exe
"C:\Windows\SysWOW64\readmerunning.exe"
C:\Windows\SysWOW64\readmerunning.exe
"C:\Windows\SysWOW64\readmerunning.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | g.bing.com | udp |
| US | 13.107.21.237:443 | g.bing.com | tcp |
| NL | 23.62.61.194:443 | www.bing.com | tcp |
| US | 8.8.8.8:53 | 8.8.8.8.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 200.131.50.23.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 23.159.190.20.in-addr.arpa | udp |
| NL | 23.62.61.194:443 | www.bing.com | tcp |
| US | 8.8.8.8:53 | 43.58.199.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 194.61.62.23.in-addr.arpa | udp |
| US | 98.6.40.86:8080 | tcp | |
| US | 8.8.8.8:53 | 26.165.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 206.23.85.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 240.221.184.93.in-addr.arpa | udp |
| CN | 114.55.106.210:443 | tcp | |
| CA | 54.39.179.152:80 | tcp | |
| SA | 128.234.190.116:8090 | tcp | |
| US | 8.8.8.8:53 | 21.236.111.52.in-addr.arpa | udp |
| EC | 186.68.82.19:80 | tcp | |
| US | 173.17.134.231:8080 | tcp |
Files
memory/3380-4-0x00000000015C0000-0x00000000015D7000-memory.dmp
memory/3380-0-0x00000000015C0000-0x00000000015D7000-memory.dmp
memory/3380-6-0x00000000015E0000-0x00000000015F0000-memory.dmp
memory/3380-5-0x00000000015A0000-0x00000000015B7000-memory.dmp
memory/652-11-0x00000000012A0000-0x00000000012B7000-memory.dmp
memory/652-7-0x00000000012A0000-0x00000000012B7000-memory.dmp
memory/652-13-0x00000000012C0000-0x00000000012D0000-memory.dmp
memory/652-12-0x0000000001280000-0x0000000001297000-memory.dmp
memory/3188-14-0x0000000001670000-0x0000000001687000-memory.dmp
memory/3188-18-0x0000000001670000-0x0000000001687000-memory.dmp
memory/3188-19-0x0000000001650000-0x0000000001667000-memory.dmp
memory/3188-20-0x0000000001690000-0x00000000016A0000-memory.dmp
memory/3800-25-0x0000000001120000-0x0000000001137000-memory.dmp
memory/3800-21-0x0000000001120000-0x0000000001137000-memory.dmp
memory/3800-27-0x0000000001140000-0x0000000001150000-memory.dmp
memory/3800-26-0x0000000001100000-0x0000000001117000-memory.dmp
memory/3188-28-0x0000000001650000-0x0000000001667000-memory.dmp
memory/652-29-0x0000000000DE0000-0x0000000000E44000-memory.dmp
memory/652-30-0x0000000001280000-0x0000000001297000-memory.dmp
memory/3800-31-0x0000000001100000-0x0000000001117000-memory.dmp