Analysis Overview
SHA256
6133a328e01379d6e45f954db62359ec9217b220a1e359253dd479bce7905b19
Threat Level: Known bad
The file 4fdee5a59295dca9f41205a51b593c35_JaffaCakes118 was found to be: Known bad.
Malicious Activity Summary
Formbook
Formbook payload
Loads dropped DLL
Suspicious use of SetThreadContext
Enumerates physical storage devices
Program crash
Unsigned PE
NSIS installer
Suspicious behavior: MapViewOfSection
Suspicious use of WriteProcessMemory
Suspicious behavior: EnumeratesProcesses
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-07-16 20:11
Signatures
Unsigned PE
| 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 |
NSIS installer
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Analysis: behavioral6
Detonation Overview
Submitted
2024-07-16 20:11
Reported
2024-07-16 20:14
Platform
win10v2004-20240709-en
Max time kernel
138s
Max time network
108s
Command Line
Signatures
Program crash
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\Windows\SysWOW64\rundll32.exe |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1976 wrote to memory of 4464 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 1976 wrote to memory of 4464 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 1976 wrote to memory of 4464 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
Processes
C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\yrcvb.dll,#1
C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\yrcvb.dll,#1
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 4464 -ip 4464
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4464 -s 696
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 |
| US | 8.8.8.8:53 | 8.8.8.8.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 23.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 237.21.107.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 240.143.123.92.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 43.58.199.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 183.59.114.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 198.187.3.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 192.142.123.92.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 26.35.223.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 240.221.184.93.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 48.229.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | tse1.mm.bing.net | udp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 8.8.8.8:53 | 55.36.223.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 10.27.171.150.in-addr.arpa | udp |
Files
memory/4464-0-0x0000000075680000-0x0000000075686000-memory.dmp
memory/4464-1-0x0000000075680000-0x0000000075686000-memory.dmp
Analysis: behavioral1
Detonation Overview
Submitted
2024-07-16 20:11
Reported
2024-07-16 20:14
Platform
win7-20240704-en
Max time kernel
119s
Max time network
120s
Command Line
Signatures
Formbook
Formbook payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\4fdee5a59295dca9f41205a51b593c35_JaffaCakes118.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\4fdee5a59295dca9f41205a51b593c35_JaffaCakes118.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 1720 set thread context of 2528 | N/A | C:\Users\Admin\AppData\Local\Temp\4fdee5a59295dca9f41205a51b593c35_JaffaCakes118.exe | C:\Users\Admin\AppData\Local\Temp\4fdee5a59295dca9f41205a51b593c35_JaffaCakes118.exe |
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\4fdee5a59295dca9f41205a51b593c35_JaffaCakes118.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\4fdee5a59295dca9f41205a51b593c35_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\4fdee5a59295dca9f41205a51b593c35_JaffaCakes118.exe"
C:\Users\Admin\AppData\Local\Temp\4fdee5a59295dca9f41205a51b593c35_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\4fdee5a59295dca9f41205a51b593c35_JaffaCakes118.exe"
Network
Files
\Users\Admin\AppData\Local\Temp\nsjC18C.tmp\System.dll
| MD5 | fccff8cb7a1067e23fd2e2b63971a8e1 |
| SHA1 | 30e2a9e137c1223a78a0f7b0bf96a1c361976d91 |
| SHA256 | 6fcea34c8666b06368379c6c402b5321202c11b00889401c743fb96c516c679e |
| SHA512 | f4335e84e6f8d70e462a22f1c93d2998673a7616c868177cac3e8784a3be1d7d0bb96f2583fa0ed82f4f2b6b8f5d9b33521c279a42e055d80a94b4f3f1791e0c |
memory/1720-11-0x0000000074730000-0x0000000074736000-memory.dmp
\Users\Admin\AppData\Local\Temp\yrcvb.dll
| MD5 | 2072ef8fa8d7b21c6710dd45329ed960 |
| SHA1 | c37e442611dca9cba6af656c1f570432eb1f8d34 |
| SHA256 | 74c0cbf5666dfdd57165bf6ec429d69b1b471ee10d9451d059099c9a4af0453a |
| SHA512 | 198aacdc2178a5ce7cbf834346f7c97b9c95f19796879281472c9c582bae2a7cb850e37d76b553f84601563ff2d225b10db26213c4f12eb5f0b3392d93585b61 |
memory/2528-12-0x0000000000400000-0x000000000042E000-memory.dmp
memory/1720-13-0x0000000074730000-0x0000000074736000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-07-16 20:11
Reported
2024-07-16 20:14
Platform
win10v2004-20240709-en
Max time kernel
143s
Max time network
111s
Command Line
Signatures
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\4fdee5a59295dca9f41205a51b593c35_JaffaCakes118.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\4fdee5a59295dca9f41205a51b593c35_JaffaCakes118.exe | N/A |
Enumerates physical storage devices
Program crash
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\Users\Admin\AppData\Local\Temp\4fdee5a59295dca9f41205a51b593c35_JaffaCakes118.exe |
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 2480 wrote to memory of 1728 | N/A | C:\Users\Admin\AppData\Local\Temp\4fdee5a59295dca9f41205a51b593c35_JaffaCakes118.exe | C:\Users\Admin\AppData\Local\Temp\4fdee5a59295dca9f41205a51b593c35_JaffaCakes118.exe |
| PID 2480 wrote to memory of 1728 | N/A | C:\Users\Admin\AppData\Local\Temp\4fdee5a59295dca9f41205a51b593c35_JaffaCakes118.exe | C:\Users\Admin\AppData\Local\Temp\4fdee5a59295dca9f41205a51b593c35_JaffaCakes118.exe |
| PID 2480 wrote to memory of 1728 | N/A | C:\Users\Admin\AppData\Local\Temp\4fdee5a59295dca9f41205a51b593c35_JaffaCakes118.exe | C:\Users\Admin\AppData\Local\Temp\4fdee5a59295dca9f41205a51b593c35_JaffaCakes118.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\4fdee5a59295dca9f41205a51b593c35_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\4fdee5a59295dca9f41205a51b593c35_JaffaCakes118.exe"
C:\Users\Admin\AppData\Local\Temp\4fdee5a59295dca9f41205a51b593c35_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\4fdee5a59295dca9f41205a51b593c35_JaffaCakes118.exe"
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 2480 -ip 2480
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2480 -s 1012
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 |
| US | 8.8.8.8:53 | 237.21.107.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 68.32.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 101.58.20.217.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 43.58.199.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 86.23.85.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 240.143.123.92.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 15.164.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 192.142.123.92.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.210.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 55.36.223.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 240.221.184.93.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 23.236.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | tse1.mm.bing.net | udp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 8.8.8.8:53 | 10.27.171.150.in-addr.arpa | udp |
Files
C:\Users\Admin\AppData\Local\Temp\nsu9F1F.tmp\System.dll
| MD5 | fccff8cb7a1067e23fd2e2b63971a8e1 |
| SHA1 | 30e2a9e137c1223a78a0f7b0bf96a1c361976d91 |
| SHA256 | 6fcea34c8666b06368379c6c402b5321202c11b00889401c743fb96c516c679e |
| SHA512 | f4335e84e6f8d70e462a22f1c93d2998673a7616c868177cac3e8784a3be1d7d0bb96f2583fa0ed82f4f2b6b8f5d9b33521c279a42e055d80a94b4f3f1791e0c |
C:\Users\Admin\AppData\Local\Temp\yrcvb.dll
| MD5 | 2072ef8fa8d7b21c6710dd45329ed960 |
| SHA1 | c37e442611dca9cba6af656c1f570432eb1f8d34 |
| SHA256 | 74c0cbf5666dfdd57165bf6ec429d69b1b471ee10d9451d059099c9a4af0453a |
| SHA512 | 198aacdc2178a5ce7cbf834346f7c97b9c95f19796879281472c9c582bae2a7cb850e37d76b553f84601563ff2d225b10db26213c4f12eb5f0b3392d93585b61 |
memory/2480-8-0x00000000749A0000-0x00000000749A6000-memory.dmp
memory/2480-10-0x00000000749A0000-0x00000000749A6000-memory.dmp
Analysis: behavioral3
Detonation Overview
Submitted
2024-07-16 20:11
Reported
2024-07-16 20:14
Platform
win7-20240705-en
Max time kernel
118s
Max time network
119s
Command Line
Signatures
Program crash
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\Windows\SysWOW64\rundll32.exe |
Suspicious use of WriteProcessMemory
Processes
C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\System.dll,#1
C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\System.dll,#1
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1836 -s 220
Network
Files
Analysis: behavioral4
Detonation Overview
Submitted
2024-07-16 20:11
Reported
2024-07-16 20:14
Platform
win10v2004-20240709-en
Max time kernel
141s
Max time network
150s
Command Line
Signatures
Program crash
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\Windows\SysWOW64\rundll32.exe |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1140 wrote to memory of 4456 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 1140 wrote to memory of 4456 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 1140 wrote to memory of 4456 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
Processes
C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\System.dll,#1
C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\System.dll,#1
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4456 -ip 4456
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4456 -s 616
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 71.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.210.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 205.47.74.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 183.59.114.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 15.164.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 147.142.123.92.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 240.143.123.92.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 26.35.223.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 25.140.123.92.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 | 150.171.28.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.28.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.28.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.28.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.28.10:443 | tse1.mm.bing.net | tcp |
| US | 8.8.8.8:53 | 55.36.223.20.in-addr.arpa | udp |
Files
Analysis: behavioral5
Detonation Overview
Submitted
2024-07-16 20:11
Reported
2024-07-16 20:14
Platform
win7-20240708-en
Max time kernel
122s
Max time network
127s
Command Line
Signatures
Program crash
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\Windows\SysWOW64\rundll32.exe |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\yrcvb.dll,#1
C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\yrcvb.dll,#1
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2140 -s 276
Network
Files
memory/2140-1-0x0000000074920000-0x0000000074926000-memory.dmp
memory/2140-3-0x00000000749C0000-0x00000000749C6000-memory.dmp
memory/2140-2-0x0000000074910000-0x0000000074916000-memory.dmp
memory/2140-0-0x00000000749C0000-0x00000000749C6000-memory.dmp
memory/2140-4-0x0000000074920000-0x0000000074926000-memory.dmp
memory/2140-6-0x0000000074910000-0x0000000074916000-memory.dmp
memory/2140-5-0x00000000749C0000-0x00000000749C6000-memory.dmp