Analysis Overview
SHA256
3a5d3ccbe1161064dd4900cbd8ca11797b13b9692fc66d3a632e53767b4fdc34
Threat Level: Known bad
The file b1cad1540ecb290088252635f8e130022eed7486eb128c0ca3d676945d60a9fc.zip was found to be: Known bad.
Malicious Activity Summary
Emotet
Drops file in System32 directory
Unsigned PE
Enumerates physical storage devices
Modifies data under HKEY_USERS
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: RenamesItself
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-04-02 09:52
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-04-02 09:52
Reported
2024-04-02 09:55
Platform
win7-20240221-en
Max time kernel
140s
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\rebrandrebrand.exe | N/A |
Enumerates physical storage devices
Modifies data under HKEY_USERS
| Description | Indicator | Process | Target |
| Set value (int) | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{064763DF-A25E-4BED-A124-A3EF5B565EB6}\WpadDecisionReason = "1" | C:\Windows\SysWOW64\rebrandrebrand.exe | N/A |
| Set value (data) | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000004000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f008e000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 | C:\Windows\SysWOW64\rebrandrebrand.exe | N/A |
| Set value (str) | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:" | C:\Windows\SysWOW64\rebrandrebrand.exe | N/A |
| Set value (data) | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 | C:\Windows\SysWOW64\rebrandrebrand.exe | N/A |
| Set value (int) | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0" | C:\Windows\SysWOW64\rebrandrebrand.exe | N/A |
| Key created | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections | C:\Windows\SysWOW64\rebrandrebrand.exe | N/A |
| Set value (str) | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:" | C:\Windows\SysWOW64\rebrandrebrand.exe | N/A |
| Key created | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad | C:\Windows\SysWOW64\rebrandrebrand.exe | N/A |
| Set value (data) | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{064763DF-A25E-4BED-A124-A3EF5B565EB6}\WpadDecisionTime = 80f6c89ee384da01 | C:\Windows\SysWOW64\rebrandrebrand.exe | N/A |
| Set value (data) | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 | C:\Windows\SysWOW64\rebrandrebrand.exe | N/A |
| Set value (str) | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix | C:\Windows\SysWOW64\rebrandrebrand.exe | N/A |
| Set value (data) | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\2a-4c-bf-fa-c7-32\WpadDecisionTime = e01f78dee384da01 | C:\Windows\SysWOW64\rebrandrebrand.exe | N/A |
| Key created | \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings | C:\Windows\SysWOW64\rebrandrebrand.exe | N/A |
| Key created | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings | C:\Windows\SysWOW64\rebrandrebrand.exe | N/A |
| Set value (int) | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\2a-4c-bf-fa-c7-32\WpadDecisionReason = "1" | C:\Windows\SysWOW64\rebrandrebrand.exe | N/A |
| Set value (int) | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\2a-4c-bf-fa-c7-32\WpadDecision = "0" | C:\Windows\SysWOW64\rebrandrebrand.exe | N/A |
| Set value (data) | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{064763DF-A25E-4BED-A124-A3EF5B565EB6}\WpadDecisionTime = e01f78dee384da01 | C:\Windows\SysWOW64\rebrandrebrand.exe | N/A |
| Set value (str) | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{064763DF-A25E-4BED-A124-A3EF5B565EB6}\WpadNetworkName = "Network 3" | C:\Windows\SysWOW64\rebrandrebrand.exe | N/A |
| Key created | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{064763DF-A25E-4BED-A124-A3EF5B565EB6}\2a-4c-bf-fa-c7-32 | C:\Windows\SysWOW64\rebrandrebrand.exe | N/A |
| Key created | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\2a-4c-bf-fa-c7-32 | C:\Windows\SysWOW64\rebrandrebrand.exe | N/A |
| Set value (data) | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\2a-4c-bf-fa-c7-32\WpadDecisionTime = 80f6c89ee384da01 | C:\Windows\SysWOW64\rebrandrebrand.exe | N/A |
| Set value (str) | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\2a-4c-bf-fa-c7-32\WpadDetectedUrl | C:\Windows\SysWOW64\rebrandrebrand.exe | N/A |
| Set value (data) | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f008e000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 | C:\Windows\SysWOW64\rebrandrebrand.exe | N/A |
| Set value (int) | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{064763DF-A25E-4BED-A124-A3EF5B565EB6}\WpadDecision = "0" | C:\Windows\SysWOW64\rebrandrebrand.exe | N/A |
| Key created | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{064763DF-A25E-4BED-A124-A3EF5B565EB6} | C:\Windows\SysWOW64\rebrandrebrand.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\rebrandrebrand.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\rebrandrebrand.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\rebrandrebrand.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\rebrandrebrand.exe | N/A |
Suspicious behavior: RenamesItself
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\b1cad1540ecb290088252635f8e130022eed7486eb128c0ca3d676945d60a9fc.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\b1cad1540ecb290088252635f8e130022eed7486eb128c0ca3d676945d60a9fc.exe
"C:\Users\Admin\AppData\Local\Temp\b1cad1540ecb290088252635f8e130022eed7486eb128c0ca3d676945d60a9fc.exe"
C:\Users\Admin\AppData\Local\Temp\b1cad1540ecb290088252635f8e130022eed7486eb128c0ca3d676945d60a9fc.exe
--34872623
C:\Windows\SysWOW64\rebrandrebrand.exe
"C:\Windows\SysWOW64\rebrandrebrand.exe"
C:\Windows\SysWOW64\rebrandrebrand.exe
--da5a7012
Network
| Country | Destination | Domain | Proto |
| PE | 190.117.206.153:443 | tcp | |
| PE | 190.117.206.153:443 | tcp | |
| PK | 203.99.187.137:443 | tcp | |
| PK | 203.99.187.137:443 | tcp | |
| CU | 200.55.168.82:20 | tcp | |
| CU | 200.55.168.82:20 | tcp | |
| US | 70.32.94.58:8080 | tcp |
Files
memory/3008-0-0x0000000000240000-0x0000000000256000-memory.dmp
memory/3008-5-0x0000000000230000-0x0000000000240000-memory.dmp
memory/2636-11-0x00000000001D0000-0x00000000001E6000-memory.dmp
memory/3008-21-0x0000000000230000-0x0000000000240000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-04-02 09:52
Reported
2024-04-02 09:55
Platform
win10v2004-20240226-en
Max time kernel
141s
Max time network
165s
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\INetCookies | C:\Windows\SysWOW64\capminimum.exe | N/A |
| File opened for modification | C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5 | C:\Windows\SysWOW64\capminimum.exe | N/A |
| File opened for modification | C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5 | C:\Windows\SysWOW64\capminimum.exe | N/A |
| File opened for modification | C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE | C:\Windows\SysWOW64\capminimum.exe | N/A |
Enumerates physical storage devices
Modifies data under HKEY_USERS
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix | C:\Windows\SysWOW64\capminimum.exe | N/A |
| Set value (str) | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:" | C:\Windows\SysWOW64\capminimum.exe | N/A |
| Set value (str) | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:" | C:\Windows\SysWOW64\capminimum.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\capminimum.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\capminimum.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\capminimum.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\capminimum.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\capminimum.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\capminimum.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\capminimum.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\capminimum.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\capminimum.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\capminimum.exe | N/A |
Suspicious behavior: RenamesItself
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\b1cad1540ecb290088252635f8e130022eed7486eb128c0ca3d676945d60a9fc.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\b1cad1540ecb290088252635f8e130022eed7486eb128c0ca3d676945d60a9fc.exe
"C:\Users\Admin\AppData\Local\Temp\b1cad1540ecb290088252635f8e130022eed7486eb128c0ca3d676945d60a9fc.exe"
C:\Users\Admin\AppData\Local\Temp\b1cad1540ecb290088252635f8e130022eed7486eb128c0ca3d676945d60a9fc.exe
--34872623
C:\Windows\SysWOW64\capminimum.exe
"C:\Windows\SysWOW64\capminimum.exe"
C:\Windows\SysWOW64\capminimum.exe
--8827b70e
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=3928 --field-trial-handle=2252,i,16504368816373493055,9578615028378602855,262144 --variations-seed-version /prefetch:8
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 28.118.140.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 218.110.86.104.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 73.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 13.107.253.64:443 | tcp | |
| US | 8.8.8.8:53 | 232.168.11.51.in-addr.arpa | udp |
| 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 | 57.162.23.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 9.66.18.2.in-addr.arpa | udp |
| PE | 190.117.206.153:443 | tcp | |
| US | 8.8.8.8:53 | 130.211.222.173.in-addr.arpa | udp |
| PK | 203.99.187.137:443 | tcp | |
| US | 8.8.8.8:53 | 79.121.231.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 29.243.111.52.in-addr.arpa | udp |
| CU | 200.55.168.82:20 | tcp | |
| US | 70.32.94.58:8080 | tcp | |
| GB | 213.138.100.98:8080 | tcp | |
| US | 8.8.8.8:53 | 5.173.189.20.in-addr.arpa | udp |
Files
memory/3768-1-0x0000000000550000-0x0000000000560000-memory.dmp
memory/3768-0-0x00000000021E0000-0x00000000021F6000-memory.dmp
memory/2588-6-0x0000000000520000-0x0000000000536000-memory.dmp
memory/4908-11-0x0000000000E50000-0x0000000000E66000-memory.dmp
memory/2080-16-0x0000000000C60000-0x0000000000C76000-memory.dmp