Analysis Overview
SHA256
224f9ca9a8c26292e61e2143a3c0e47ebbd443bc67991f588f4cd3073ede3d96
Threat Level: Known bad
The file 1b3af5962c2fd7b169c9134c74753094_JaffaCakes118 was found to be: Known bad.
Malicious Activity Summary
Emotet
Drops file in System32 directory
Unsigned PE
Enumerates physical storage devices
Program crash
Suspicious behavior: RenamesItself
Modifies data under HKEY_USERS
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-05-06 06:39
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-05-06 06:39
Reported
2024-05-06 06:41
Platform
win7-20240221-en
Max time kernel
146s
Max time network
153s
Command Line
Signatures
Emotet
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\rebrandskip.exe | N/A |
Enumerates physical storage devices
Modifies data under HKEY_USERS
| Description | Indicator | Process | Target |
| Set value (data) | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 | C:\Windows\SysWOW64\rebrandskip.exe | N/A |
| Set value (int) | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\fe-1b-e0-db-da-20\WpadDecisionReason = "1" | C:\Windows\SysWOW64\rebrandskip.exe | N/A |
| Set value (int) | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\fe-1b-e0-db-da-20\WpadDecision = "0" | C:\Windows\SysWOW64\rebrandskip.exe | N/A |
| Set value (data) | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000004000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f008a000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 | C:\Windows\SysWOW64\rebrandskip.exe | N/A |
| Key created | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections | C:\Windows\SysWOW64\rebrandskip.exe | N/A |
| Set value (int) | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0" | C:\Windows\SysWOW64\rebrandskip.exe | N/A |
| Key created | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\fe-1b-e0-db-da-20 | C:\Windows\SysWOW64\rebrandskip.exe | N/A |
| Key created | \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings | C:\Windows\SysWOW64\rebrandskip.exe | N/A |
| Set value (str) | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix | C:\Windows\SysWOW64\rebrandskip.exe | N/A |
| Set value (data) | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{9DCF05A0-8F7B-4B9B-8D02-882E3DA5E092}\WpadDecisionTime = 40711d67809fda01 | C:\Windows\SysWOW64\rebrandskip.exe | N/A |
| Set value (data) | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\fe-1b-e0-db-da-20\WpadDecisionTime = 40711d67809fda01 | C:\Windows\SysWOW64\rebrandskip.exe | N/A |
| Set value (int) | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{9DCF05A0-8F7B-4B9B-8D02-882E3DA5E092}\WpadDecisionReason = "1" | C:\Windows\SysWOW64\rebrandskip.exe | N/A |
| Set value (data) | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{9DCF05A0-8F7B-4B9B-8D02-882E3DA5E092}\WpadDecisionTime = 200b832d809fda01 | C:\Windows\SysWOW64\rebrandskip.exe | N/A |
| Set value (int) | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{9DCF05A0-8F7B-4B9B-8D02-882E3DA5E092}\WpadDecision = "0" | C:\Windows\SysWOW64\rebrandskip.exe | N/A |
| Set value (str) | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:" | C:\Windows\SysWOW64\rebrandskip.exe | N/A |
| Set value (data) | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\fe-1b-e0-db-da-20\WpadDecisionTime = 200b832d809fda01 | C:\Windows\SysWOW64\rebrandskip.exe | N/A |
| Set value (data) | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f008a000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 | C:\Windows\SysWOW64\rebrandskip.exe | N/A |
| Key created | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{9DCF05A0-8F7B-4B9B-8D02-882E3DA5E092} | C:\Windows\SysWOW64\rebrandskip.exe | N/A |
| Set value (data) | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 | C:\Windows\SysWOW64\rebrandskip.exe | N/A |
| Key created | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings | C:\Windows\SysWOW64\rebrandskip.exe | N/A |
| Key created | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{9DCF05A0-8F7B-4B9B-8D02-882E3DA5E092}\fe-1b-e0-db-da-20 | C:\Windows\SysWOW64\rebrandskip.exe | N/A |
| Set value (str) | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\fe-1b-e0-db-da-20\WpadDetectedUrl | C:\Windows\SysWOW64\rebrandskip.exe | N/A |
| Set value (str) | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:" | C:\Windows\SysWOW64\rebrandskip.exe | N/A |
| Key created | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad | C:\Windows\SysWOW64\rebrandskip.exe | N/A |
| Set value (str) | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{9DCF05A0-8F7B-4B9B-8D02-882E3DA5E092}\WpadNetworkName = "Network 3" | C:\Windows\SysWOW64\rebrandskip.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\rebrandskip.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\rebrandskip.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\rebrandskip.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\rebrandskip.exe | N/A |
Suspicious behavior: RenamesItself
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\1b3af5962c2fd7b169c9134c74753094_jaffacakes118.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\1b3af5962c2fd7b169c9134c74753094_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\1b3af5962c2fd7b169c9134c74753094_JaffaCakes118.exe"
C:\Users\Admin\AppData\Local\Temp\1b3af5962c2fd7b169c9134c74753094_jaffacakes118.exe
--2cecd7fb
C:\Windows\SysWOW64\rebrandskip.exe
"C:\Windows\SysWOW64\rebrandskip.exe"
C:\Windows\SysWOW64\rebrandskip.exe
--1315b2c9
Network
| Country | Destination | Domain | Proto |
| US | 69.162.169.173:8080 | tcp | |
| US | 69.162.169.173:8080 | tcp | |
| SG | 68.183.190.199:8080 | tcp | |
| SG | 68.183.190.199:8080 | tcp | |
| ID | 103.31.232.93:443 | tcp | |
| ID | 103.31.232.93:443 | tcp | |
| DE | 5.1.86.195:8080 | tcp | |
| DE | 5.1.86.195:8080 | tcp |
Files
memory/2232-0-0x00000000003C0000-0x00000000003D7000-memory.dmp
memory/2232-5-0x00000000003B0000-0x00000000003C0000-memory.dmp
memory/2916-11-0x0000000000280000-0x0000000000297000-memory.dmp
memory/2180-16-0x0000000000400000-0x0000000000432000-memory.dmp
memory/2532-17-0x00000000003E0000-0x00000000003F7000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-05-06 06:39
Reported
2024-05-06 06:41
Platform
win10v2004-20240419-en
Max time kernel
133s
Max time network
101s
Command Line
Signatures
Emotet
Enumerates physical storage devices
Program crash
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\Windows\SysWOW64\kdscrypto.exe |
Suspicious behavior: RenamesItself
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\1b3af5962c2fd7b169c9134c74753094_jaffacakes118.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 2296 wrote to memory of 4532 | N/A | C:\Users\Admin\AppData\Local\Temp\1b3af5962c2fd7b169c9134c74753094_JaffaCakes118.exe | C:\Users\Admin\AppData\Local\Temp\1b3af5962c2fd7b169c9134c74753094_jaffacakes118.exe |
| PID 2296 wrote to memory of 4532 | N/A | C:\Users\Admin\AppData\Local\Temp\1b3af5962c2fd7b169c9134c74753094_JaffaCakes118.exe | C:\Users\Admin\AppData\Local\Temp\1b3af5962c2fd7b169c9134c74753094_jaffacakes118.exe |
| PID 2296 wrote to memory of 4532 | N/A | C:\Users\Admin\AppData\Local\Temp\1b3af5962c2fd7b169c9134c74753094_JaffaCakes118.exe | C:\Users\Admin\AppData\Local\Temp\1b3af5962c2fd7b169c9134c74753094_jaffacakes118.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\1b3af5962c2fd7b169c9134c74753094_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\1b3af5962c2fd7b169c9134c74753094_JaffaCakes118.exe"
C:\Users\Admin\AppData\Local\Temp\1b3af5962c2fd7b169c9134c74753094_jaffacakes118.exe
--2cecd7fb
C:\Windows\SysWOW64\kdscrypto.exe
"C:\Windows\SysWOW64\kdscrypto.exe"
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 4140 -ip 4140
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4140 -s 300
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | g.bing.com | udp |
| US | 204.79.197.237:443 | g.bing.com | tcp |
| US | 8.8.8.8:53 | 149.220.183.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 77.190.18.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 237.197.79.204.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 76.32.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 26.35.223.20.in-addr.arpa | udp |
| NL | 23.62.61.155:443 | www.bing.com | tcp |
| US | 8.8.8.8:53 | 155.61.62.23.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 103.169.127.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 15.164.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 139.53.16.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 49.15.97.104.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 205.47.74.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 14.227.111.52.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 |
Files
memory/2296-0-0x0000000002300000-0x0000000002317000-memory.dmp
memory/2296-5-0x0000000002260000-0x0000000002270000-memory.dmp
memory/4532-6-0x00000000021D0000-0x00000000021E7000-memory.dmp
memory/4532-11-0x0000000000400000-0x0000000000432000-memory.dmp