Analysis Overview
SHA256
80e0fad3bd2c2640bcb4aa073e7195a8fac77ac92b1085ca71cf975da3de6f9d
Threat Level: Known bad
The file 3a4fc843fea55ee700af9ca739e690e0.exe was found to be: Known bad.
Malicious Activity Summary
NyMaim
Deletes itself
Checks computer location settings
Program crash
Enumerates physical storage devices
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Kills process with taskkill
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2022-12-29 12:15
Signatures
Analysis: behavioral1
Detonation Overview
Submitted
2022-12-29 12:15
Reported
2022-12-29 12:18
Platform
win7-20220812-en
Max time kernel
41s
Max time network
45s
Command Line
Signatures
NyMaim
Deletes itself
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\cmd.exe | N/A |
Enumerates physical storage devices
Kills process with taskkill
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\taskkill.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Windows\SysWOW64\taskkill.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 2044 wrote to memory of 584 | N/A | C:\Users\Admin\AppData\Local\Temp\3a4fc843fea55ee700af9ca739e690e0.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 2044 wrote to memory of 584 | N/A | C:\Users\Admin\AppData\Local\Temp\3a4fc843fea55ee700af9ca739e690e0.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 2044 wrote to memory of 584 | N/A | C:\Users\Admin\AppData\Local\Temp\3a4fc843fea55ee700af9ca739e690e0.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 2044 wrote to memory of 584 | N/A | C:\Users\Admin\AppData\Local\Temp\3a4fc843fea55ee700af9ca739e690e0.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 584 wrote to memory of 468 | N/A | C:\Windows\SysWOW64\cmd.exe | C:\Windows\SysWOW64\taskkill.exe |
| PID 584 wrote to memory of 468 | N/A | C:\Windows\SysWOW64\cmd.exe | C:\Windows\SysWOW64\taskkill.exe |
| PID 584 wrote to memory of 468 | N/A | C:\Windows\SysWOW64\cmd.exe | C:\Windows\SysWOW64\taskkill.exe |
| PID 584 wrote to memory of 468 | N/A | C:\Windows\SysWOW64\cmd.exe | C:\Windows\SysWOW64\taskkill.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\3a4fc843fea55ee700af9ca739e690e0.exe
"C:\Users\Admin\AppData\Local\Temp\3a4fc843fea55ee700af9ca739e690e0.exe"
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c taskkill /im "3a4fc843fea55ee700af9ca739e690e0.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\3a4fc843fea55ee700af9ca739e690e0.exe" & exit
C:\Windows\SysWOW64\taskkill.exe
taskkill /im "3a4fc843fea55ee700af9ca739e690e0.exe" /f
Network
| Country | Destination | Domain | Proto |
| N/A | 45.139.105.171:80 | 45.139.105.171 | tcp |
Files
memory/2044-54-0x0000000075F81000-0x0000000075F83000-memory.dmp
memory/2044-55-0x00000000005FA000-0x0000000000620000-memory.dmp
memory/2044-56-0x0000000000250000-0x0000000000290000-memory.dmp
memory/2044-57-0x0000000000400000-0x0000000000462000-memory.dmp
memory/584-58-0x0000000000000000-mapping.dmp
memory/2044-59-0x00000000005FA000-0x0000000000620000-memory.dmp
memory/2044-60-0x0000000000400000-0x0000000000462000-memory.dmp
memory/468-61-0x0000000000000000-mapping.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2022-12-29 12:15
Reported
2022-12-29 12:18
Platform
win10v2004-20220901-en
Max time kernel
61s
Max time network
124s
Command Line
Signatures
NyMaim
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\3a4fc843fea55ee700af9ca739e690e0.exe | N/A |
Enumerates physical storage devices
Program crash
Kills process with taskkill
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\taskkill.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Windows\SysWOW64\taskkill.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 3540 wrote to memory of 1532 | N/A | C:\Users\Admin\AppData\Local\Temp\3a4fc843fea55ee700af9ca739e690e0.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 3540 wrote to memory of 1532 | N/A | C:\Users\Admin\AppData\Local\Temp\3a4fc843fea55ee700af9ca739e690e0.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 3540 wrote to memory of 1532 | N/A | C:\Users\Admin\AppData\Local\Temp\3a4fc843fea55ee700af9ca739e690e0.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 1532 wrote to memory of 3564 | N/A | C:\Windows\SysWOW64\cmd.exe | C:\Windows\SysWOW64\taskkill.exe |
| PID 1532 wrote to memory of 3564 | N/A | C:\Windows\SysWOW64\cmd.exe | C:\Windows\SysWOW64\taskkill.exe |
| PID 1532 wrote to memory of 3564 | N/A | C:\Windows\SysWOW64\cmd.exe | C:\Windows\SysWOW64\taskkill.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\3a4fc843fea55ee700af9ca739e690e0.exe
"C:\Users\Admin\AppData\Local\Temp\3a4fc843fea55ee700af9ca739e690e0.exe"
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 3540 -ip 3540
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3540 -s 456
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 384 -p 3540 -ip 3540
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3540 -s 764
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 476 -p 3540 -ip 3540
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3540 -s 772
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 476 -p 3540 -ip 3540
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3540 -s 772
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 540 -p 3540 -ip 3540
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3540 -s 820
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 556 -p 3540 -ip 3540
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3540 -s 928
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 580 -p 3540 -ip 3540
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3540 -s 1004
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 3540 -ip 3540
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3540 -s 1372
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c taskkill /im "3a4fc843fea55ee700af9ca739e690e0.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\3a4fc843fea55ee700af9ca739e690e0.exe" & exit
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 596 -p 3540 -ip 3540
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3540 -s 516
C:\Windows\SysWOW64\taskkill.exe
taskkill /im "3a4fc843fea55ee700af9ca739e690e0.exe" /f
Network
| Country | Destination | Domain | Proto |
| N/A | 45.139.105.171:80 | 45.139.105.171 | tcp |
| N/A | 20.189.173.15:443 | tcp | |
| N/A | 2.18.109.224:443 | tcp |
Files
memory/3540-132-0x0000000000697000-0x00000000006BE000-memory.dmp
memory/3540-133-0x00000000005C0000-0x0000000000600000-memory.dmp
memory/3540-134-0x0000000000400000-0x0000000000462000-memory.dmp
memory/1532-135-0x0000000000000000-mapping.dmp
memory/3564-136-0x0000000000000000-mapping.dmp
memory/3540-137-0x0000000000697000-0x00000000006BE000-memory.dmp
memory/3540-138-0x0000000000400000-0x0000000000462000-memory.dmp