Analysis Overview
SHA256
45093c0dc63f8296007722dc4b67fb8100f2033784307a5b463e3e7abfa76255
Threat Level: Known bad
The file 9b3f4d6a9bae4d7f9cfe45e706db8fe4baef51ae12353941e8b1532b231e6eac.exe.zip was found to be: Known bad.
Malicious Activity Summary
AmmyyAdmin payload
FlawedAmmyy RAT
Ammyyadmin family
Checks computer location settings
Drops file in System32 directory
Modifies data under HKEY_USERS
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2023-10-31 14:04
Signatures
AmmyyAdmin payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Ammyyadmin family
Analysis: behavioral1
Detonation Overview
Submitted
2023-10-31 14:04
Reported
2023-10-31 14:32
Platform
win7-20231020-en
Max time kernel
151s
Max time network
162s
Command Line
Signatures
FlawedAmmyy RAT
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-2084844033-2744876406-2053742436-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\9b3f4d6a9bae4d7f9cfe45e706db8fe4baef51ae12353941e8b1532b231e6eac.exe | N/A |
Modifies data under HKEY_USERS
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy\Admin | C:\Users\Admin\AppData\Local\Temp\9b3f4d6a9bae4d7f9cfe45e706db8fe4baef51ae12353941e8b1532b231e6eac.exe | N/A |
| Key created | \REGISTRY\USER\.DEFAULT\SOFTWARE | C:\Users\Admin\AppData\Local\Temp\9b3f4d6a9bae4d7f9cfe45e706db8fe4baef51ae12353941e8b1532b231e6eac.exe | N/A |
| Key created | \REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy | C:\Users\Admin\AppData\Local\Temp\9b3f4d6a9bae4d7f9cfe45e706db8fe4baef51ae12353941e8b1532b231e6eac.exe | N/A |
| Set value (data) | \REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy\Admin\hr = 537d56736608796e5f5e4c105953876cee9f4e53b26b | C:\Users\Admin\AppData\Local\Temp\9b3f4d6a9bae4d7f9cfe45e706db8fe4baef51ae12353941e8b1532b231e6eac.exe | N/A |
| Set value (data) | \REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy\Admin\hr3 = 6151e3a5ab050eeb5f5c8892055463c47daec48c81cabe1b67fb6a1ec5a076b04708b3feffd4bc470abb20da99db9432afcea4c6d0dbe84b7718a4613f76443dd64e514a | C:\Users\Admin\AppData\Local\Temp\9b3f4d6a9bae4d7f9cfe45e706db8fe4baef51ae12353941e8b1532b231e6eac.exe | N/A |
| Key created | \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings | C:\Users\Admin\AppData\Local\Temp\9b3f4d6a9bae4d7f9cfe45e706db8fe4baef51ae12353941e8b1532b231e6eac.exe | N/A |
Suspicious use of FindShellTrayWindow
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\9b3f4d6a9bae4d7f9cfe45e706db8fe4baef51ae12353941e8b1532b231e6eac.exe | N/A |
Suspicious use of SendNotifyMessage
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\9b3f4d6a9bae4d7f9cfe45e706db8fe4baef51ae12353941e8b1532b231e6eac.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\9b3f4d6a9bae4d7f9cfe45e706db8fe4baef51ae12353941e8b1532b231e6eac.exe
"C:\Users\Admin\AppData\Local\Temp\9b3f4d6a9bae4d7f9cfe45e706db8fe4baef51ae12353941e8b1532b231e6eac.exe"
C:\Users\Admin\AppData\Local\Temp\9b3f4d6a9bae4d7f9cfe45e706db8fe4baef51ae12353941e8b1532b231e6eac.exe
"C:\Users\Admin\AppData\Local\Temp\9b3f4d6a9bae4d7f9cfe45e706db8fe4baef51ae12353941e8b1532b231e6eac.exe" -service -lunch
C:\Users\Admin\AppData\Local\Temp\9b3f4d6a9bae4d7f9cfe45e706db8fe4baef51ae12353941e8b1532b231e6eac.exe
"C:\Users\Admin\AppData\Local\Temp\9b3f4d6a9bae4d7f9cfe45e706db8fe4baef51ae12353941e8b1532b231e6eac.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | rl.ammyy.com | udp |
| NL | 188.42.129.148:80 | rl.ammyy.com | tcp |
| DE | 136.243.104.242:443 | tcp |
Files
C:\ProgramData\AMMYY\settings3.bin
| MD5 | 714f2508d4227f74b6adacfef73815d8 |
| SHA1 | a35c8a796e4453c0c09d011284b806d25bdad04c |
| SHA256 | a5579945f23747541c0e80b79e79375d4ca44feafcd425ee9bd9302e35312480 |
| SHA512 | 1171a6eac6d237053815a40c2bcc2df9f4209902d6157777377228f3b618cad50c88a9519444ed5c447cf744e4655272fb42dabb567df85b4b19b1a2f1d086d8 |
C:\ProgramData\AMMYY\hr
| MD5 | ae755a91f460fe578758814db5165e91 |
| SHA1 | d13f9214508e1de6c478a413893773773126a612 |
| SHA256 | 7005438678e6008a55d692f1a1f74542c06f2cb3377515d3941a056b218d2931 |
| SHA512 | 5387afd32cd3245d71259af2ff197b5ea303baeac7b70bef6e3cf563234559c0b70ca0d6c37e4c39748e2518687fd298f6f96805b636e62f29dc4aca0c09b5b3 |
C:\ProgramData\AMMYY\hr3
| MD5 | fe2ba18140e805671140aad5cd310471 |
| SHA1 | ab3ff3d42f986c06109209ffc0190d2fe46880cf |
| SHA256 | 7a280742606335372670be6eb9737503e2d2d1ddcf6468cc335b99fd53fcf33b |
| SHA512 | d268b82db34f4c69de4fa18a7d614ab679ebce13076a39bf78783066ecb3ac6ee8dc835c113d6922a69a7e55a39a6ddb215863b7a9ee7b5654abec94c62329bd |
Analysis: behavioral2
Detonation Overview
Submitted
2023-10-31 14:04
Reported
2023-10-31 14:33
Platform
win10v2004-20231023-en
Max time kernel
161s
Max time network
160s
Command Line
Signatures
FlawedAmmyy RAT
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5 | C:\Users\Admin\AppData\Local\Temp\9b3f4d6a9bae4d7f9cfe45e706db8fe4baef51ae12353941e8b1532b231e6eac.exe | N/A |
| File opened for modification | C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE | C:\Users\Admin\AppData\Local\Temp\9b3f4d6a9bae4d7f9cfe45e706db8fe4baef51ae12353941e8b1532b231e6eac.exe | N/A |
| File opened for modification | C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies | C:\Users\Admin\AppData\Local\Temp\9b3f4d6a9bae4d7f9cfe45e706db8fe4baef51ae12353941e8b1532b231e6eac.exe | N/A |
| File opened for modification | C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5 | C:\Users\Admin\AppData\Local\Temp\9b3f4d6a9bae4d7f9cfe45e706db8fe4baef51ae12353941e8b1532b231e6eac.exe | N/A |
Modifies data under HKEY_USERS
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:" | C:\Users\Admin\AppData\Local\Temp\9b3f4d6a9bae4d7f9cfe45e706db8fe4baef51ae12353941e8b1532b231e6eac.exe | N/A |
| Key created | \REGISTRY\USER\.DEFAULT\SOFTWARE | C:\Users\Admin\AppData\Local\Temp\9b3f4d6a9bae4d7f9cfe45e706db8fe4baef51ae12353941e8b1532b231e6eac.exe | N/A |
| Key created | \REGISTRY\USER\.DEFAULT\Software\Ammyy\Admin | C:\Users\Admin\AppData\Local\Temp\9b3f4d6a9bae4d7f9cfe45e706db8fe4baef51ae12353941e8b1532b231e6eac.exe | N/A |
| Set value (data) | \REGISTRY\USER\.DEFAULT\Software\Ammyy\Admin\hr3 = 44dadb38ea0392a31db739e9e5bc37cdabd023e25345ce026d2aa07ef3fb9ac106d58549430887fcb74bab04f1253a7a1fbcf01e1c4c39d3d39da07d37937e30a6a951ae | C:\Users\Admin\AppData\Local\Temp\9b3f4d6a9bae4d7f9cfe45e706db8fe4baef51ae12353941e8b1532b231e6eac.exe | N/A |
| Set value (str) | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix | C:\Users\Admin\AppData\Local\Temp\9b3f4d6a9bae4d7f9cfe45e706db8fe4baef51ae12353941e8b1532b231e6eac.exe | N/A |
| Set value (str) | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:" | C:\Users\Admin\AppData\Local\Temp\9b3f4d6a9bae4d7f9cfe45e706db8fe4baef51ae12353941e8b1532b231e6eac.exe | N/A |
| Key created | \REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy\Admin | C:\Users\Admin\AppData\Local\Temp\9b3f4d6a9bae4d7f9cfe45e706db8fe4baef51ae12353941e8b1532b231e6eac.exe | N/A |
| Key created | \REGISTRY\USER\.DEFAULT\Software\Ammyy | C:\Users\Admin\AppData\Local\Temp\9b3f4d6a9bae4d7f9cfe45e706db8fe4baef51ae12353941e8b1532b231e6eac.exe | N/A |
| Set value (data) | \REGISTRY\USER\.DEFAULT\Software\Ammyy\Admin\hr = 537d56736608796d5b5b4e155253645f21c34e53b26b | C:\Users\Admin\AppData\Local\Temp\9b3f4d6a9bae4d7f9cfe45e706db8fe4baef51ae12353941e8b1532b231e6eac.exe | N/A |
Suspicious use of FindShellTrayWindow
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\9b3f4d6a9bae4d7f9cfe45e706db8fe4baef51ae12353941e8b1532b231e6eac.exe | N/A |
Suspicious use of SendNotifyMessage
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\9b3f4d6a9bae4d7f9cfe45e706db8fe4baef51ae12353941e8b1532b231e6eac.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 2812 wrote to memory of 2312 | N/A | C:\Users\Admin\AppData\Local\Temp\9b3f4d6a9bae4d7f9cfe45e706db8fe4baef51ae12353941e8b1532b231e6eac.exe | C:\Users\Admin\AppData\Local\Temp\9b3f4d6a9bae4d7f9cfe45e706db8fe4baef51ae12353941e8b1532b231e6eac.exe |
| PID 2812 wrote to memory of 2312 | N/A | C:\Users\Admin\AppData\Local\Temp\9b3f4d6a9bae4d7f9cfe45e706db8fe4baef51ae12353941e8b1532b231e6eac.exe | C:\Users\Admin\AppData\Local\Temp\9b3f4d6a9bae4d7f9cfe45e706db8fe4baef51ae12353941e8b1532b231e6eac.exe |
| PID 2812 wrote to memory of 2312 | N/A | C:\Users\Admin\AppData\Local\Temp\9b3f4d6a9bae4d7f9cfe45e706db8fe4baef51ae12353941e8b1532b231e6eac.exe | C:\Users\Admin\AppData\Local\Temp\9b3f4d6a9bae4d7f9cfe45e706db8fe4baef51ae12353941e8b1532b231e6eac.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\9b3f4d6a9bae4d7f9cfe45e706db8fe4baef51ae12353941e8b1532b231e6eac.exe
"C:\Users\Admin\AppData\Local\Temp\9b3f4d6a9bae4d7f9cfe45e706db8fe4baef51ae12353941e8b1532b231e6eac.exe"
C:\Users\Admin\AppData\Local\Temp\9b3f4d6a9bae4d7f9cfe45e706db8fe4baef51ae12353941e8b1532b231e6eac.exe
"C:\Users\Admin\AppData\Local\Temp\9b3f4d6a9bae4d7f9cfe45e706db8fe4baef51ae12353941e8b1532b231e6eac.exe" -service -lunch
C:\Users\Admin\AppData\Local\Temp\9b3f4d6a9bae4d7f9cfe45e706db8fe4baef51ae12353941e8b1532b231e6eac.exe
"C:\Users\Admin\AppData\Local\Temp\9b3f4d6a9bae4d7f9cfe45e706db8fe4baef51ae12353941e8b1532b231e6eac.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 1.202.248.87.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 4.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 9.228.82.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 26.35.223.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 198.1.85.104.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 157.123.68.40.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 |
| US | 8.8.8.8:53 | 138.201.86.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | rl.ammyy.com | udp |
| NL | 188.42.129.148:80 | rl.ammyy.com | tcp |
| DE | 136.243.104.235:443 | tcp | |
| US | 8.8.8.8:53 | 148.129.42.188.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 235.104.243.136.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 | 22.236.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 208.194.73.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 22.236.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 23.173.189.20.in-addr.arpa | udp |
Files
C:\ProgramData\AMMYY\settings3.bin
| MD5 | 714f2508d4227f74b6adacfef73815d8 |
| SHA1 | a35c8a796e4453c0c09d011284b806d25bdad04c |
| SHA256 | a5579945f23747541c0e80b79e79375d4ca44feafcd425ee9bd9302e35312480 |
| SHA512 | 1171a6eac6d237053815a40c2bcc2df9f4209902d6157777377228f3b618cad50c88a9519444ed5c447cf744e4655272fb42dabb567df85b4b19b1a2f1d086d8 |
C:\ProgramData\AMMYY\hr
| MD5 | d3311efe9b561edfc212df93083b3478 |
| SHA1 | 2d0eebcb95f16898e588d23a033f7d35946422b6 |
| SHA256 | fe62a8974fd82cf211cd8a66e6d77b87a6ccb7713447f6e7843cae12ce7a0818 |
| SHA512 | 5a50dea6e5c46ccbd956f01b809545dd572193a460925c18c48fe0402f7eacbc92f99e715b573f5345138f236bf136745b3e90ec1a4e73f4605d07f53140e02a |
C:\ProgramData\AMMYY\hr3
| MD5 | bee852d357f5c23f2241fa9a7c555bc9 |
| SHA1 | 843a0d9a17c278ecd81e2c27aaca0ef3afd51543 |
| SHA256 | 0c9772bff00700f072e94aea25ad75392a441317c92eb482f47ebb8d7c950a10 |
| SHA512 | 1d5d97d492cc7c4228dd5c14a629c90a0696ad0b69c634c42b5008ce88be0feab71ae90c4211c205a2d34840a956aa813ee5ce4b5f3b6dc5655f1a279102c96b |