Analysis
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max time kernel
86s -
max time network
142s -
platform
windows10_x64 -
resource
win10 -
submitted
08-07-2020 16:18
Static task
static1
Behavioral task
behavioral1
Sample
e212e5bc428a0bca4615205f07c10d4e57dc881a2f32a9b8aeec040169435aa1.exe
Resource
win7v200430
Behavioral task
behavioral2
Sample
e212e5bc428a0bca4615205f07c10d4e57dc881a2f32a9b8aeec040169435aa1.exe
Resource
win10
General
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Target
e212e5bc428a0bca4615205f07c10d4e57dc881a2f32a9b8aeec040169435aa1.exe
Malware Config
Extracted
buer
https://162.244.81.87/
http://162.244.81.87:8080/
Signatures
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Modifies WinLogon for persistence 2 TTPs 1 IoCs
Processes:
gennt.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\ProgramData\\19aedf2a284d49ff442c\\gennt.exe\"" gennt.exe -
Buer Loader 1 IoCs
Detects Buer loader in memory or disk.
Processes:
resource yara_rule behavioral2/memory/2460-0-0x00000000001D0000-0x00000000001DC000-memory.dmp buer -
Executes dropped EXE 1 IoCs
Processes:
gennt.exepid process 3820 gennt.exe -
Deletes itself 1 IoCs
Processes:
gennt.exepid process 3820 gennt.exe -
Enumerates connected drives 3 TTPs 24 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
Processes:
gennt.exedescription ioc process File opened (read-only) \??\K: gennt.exe File opened (read-only) \??\V: gennt.exe File opened (read-only) \??\X: gennt.exe File opened (read-only) \??\Z: gennt.exe File opened (read-only) \??\E: gennt.exe File opened (read-only) \??\H: gennt.exe File opened (read-only) \??\J: gennt.exe File opened (read-only) \??\L: gennt.exe File opened (read-only) \??\M: gennt.exe File opened (read-only) \??\N: gennt.exe File opened (read-only) \??\Q: gennt.exe File opened (read-only) \??\A: gennt.exe File opened (read-only) \??\B: gennt.exe File opened (read-only) \??\I: gennt.exe File opened (read-only) \??\O: gennt.exe File opened (read-only) \??\P: gennt.exe File opened (read-only) \??\T: gennt.exe File opened (read-only) \??\W: gennt.exe File opened (read-only) \??\F: gennt.exe File opened (read-only) \??\G: gennt.exe File opened (read-only) \??\R: gennt.exe File opened (read-only) \??\S: gennt.exe File opened (read-only) \??\U: gennt.exe File opened (read-only) \??\Y: gennt.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Program crash 1 IoCs
Processes:
WerFault.exepid pid_target process target process 804 3768 WerFault.exe secinit.exe -
Suspicious behavior: EnumeratesProcesses 15 IoCs
Processes:
WerFault.exegennt.exepid process 804 WerFault.exe 804 WerFault.exe 804 WerFault.exe 804 WerFault.exe 804 WerFault.exe 804 WerFault.exe 804 WerFault.exe 804 WerFault.exe 804 WerFault.exe 804 WerFault.exe 804 WerFault.exe 804 WerFault.exe 804 WerFault.exe 3820 gennt.exe 3820 gennt.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
Processes:
WerFault.exedescription pid process Token: SeRestorePrivilege 804 WerFault.exe Token: SeBackupPrivilege 804 WerFault.exe Token: SeDebugPrivilege 804 WerFault.exe -
Suspicious use of WriteProcessMemory 16 IoCs
Processes:
e212e5bc428a0bca4615205f07c10d4e57dc881a2f32a9b8aeec040169435aa1.exegennt.exedescription pid process target process PID 2460 wrote to memory of 3820 2460 e212e5bc428a0bca4615205f07c10d4e57dc881a2f32a9b8aeec040169435aa1.exe gennt.exe PID 2460 wrote to memory of 3820 2460 e212e5bc428a0bca4615205f07c10d4e57dc881a2f32a9b8aeec040169435aa1.exe gennt.exe PID 2460 wrote to memory of 3820 2460 e212e5bc428a0bca4615205f07c10d4e57dc881a2f32a9b8aeec040169435aa1.exe gennt.exe PID 3820 wrote to memory of 3768 3820 gennt.exe secinit.exe PID 3820 wrote to memory of 3768 3820 gennt.exe secinit.exe PID 3820 wrote to memory of 3768 3820 gennt.exe secinit.exe PID 3820 wrote to memory of 3768 3820 gennt.exe secinit.exe PID 3820 wrote to memory of 3768 3820 gennt.exe secinit.exe PID 3820 wrote to memory of 3768 3820 gennt.exe secinit.exe PID 3820 wrote to memory of 3768 3820 gennt.exe secinit.exe PID 3820 wrote to memory of 3768 3820 gennt.exe secinit.exe PID 3820 wrote to memory of 3768 3820 gennt.exe secinit.exe PID 3820 wrote to memory of 3768 3820 gennt.exe secinit.exe PID 3820 wrote to memory of 1188 3820 gennt.exe cmd.exe PID 3820 wrote to memory of 1188 3820 gennt.exe cmd.exe PID 3820 wrote to memory of 1188 3820 gennt.exe cmd.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\e212e5bc428a0bca4615205f07c10d4e57dc881a2f32a9b8aeec040169435aa1.exe"C:\Users\Admin\AppData\Local\Temp\e212e5bc428a0bca4615205f07c10d4e57dc881a2f32a9b8aeec040169435aa1.exe"1⤵
- Suspicious use of WriteProcessMemory
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C:\ProgramData\19aedf2a284d49ff442c\gennt.exeC:\ProgramData\19aedf2a284d49ff442c\gennt.exe "C:\Users\Admin\AppData\Local\Temp\e212e5bc428a0bca4615205f07c10d4e57dc881a2f32a9b8aeec040169435aa1.exe" ensgJJ2⤵
- Modifies WinLogon for persistence
- Executes dropped EXE
- Deletes itself
- Enumerates connected drives
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\secinit.exeC:\ProgramData\19aedf2a284d49ff442c\gennt.exe3⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 3768 -s 3604⤵
- Program crash
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" powershell.exe -Command "& {Add-MpPreference -ExclusionPath C:\ProgramData\19aedf2a284d49ff442c}"3⤵
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\ProgramData\19aedf2a284d49ff442c\gennt.exeMD5
db3c2530d727bac602e6c41cb3e60562
SHA10d62d5a5fba84c1e826591f27892466a1cd59257
SHA256e212e5bc428a0bca4615205f07c10d4e57dc881a2f32a9b8aeec040169435aa1
SHA51203e25d32a262c88ec2cf9303b7835da93b321a1d2a092531c96df8d95065944250f63c075792ca72b6d2a12d60c492782ba516712fbca0bf3b0239477b6b06e8
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C:\ProgramData\19aedf2a284d49ff442c\gennt.exeMD5
db3c2530d727bac602e6c41cb3e60562
SHA10d62d5a5fba84c1e826591f27892466a1cd59257
SHA256e212e5bc428a0bca4615205f07c10d4e57dc881a2f32a9b8aeec040169435aa1
SHA51203e25d32a262c88ec2cf9303b7835da93b321a1d2a092531c96df8d95065944250f63c075792ca72b6d2a12d60c492782ba516712fbca0bf3b0239477b6b06e8
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memory/804-12-0x0000000005780000-0x0000000005781000-memory.dmpFilesize
4KB
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memory/804-6-0x0000000004F20000-0x0000000004F21000-memory.dmpFilesize
4KB
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memory/1188-13-0x0000000000000000-mapping.dmp
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memory/2460-0-0x00000000001D0000-0x00000000001DC000-memory.dmpFilesize
48KB
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memory/3768-7-0x0000000000000000-mapping.dmp
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memory/3768-8-0x0000000000000000-mapping.dmp
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memory/3768-9-0x0000000000000000-mapping.dmp
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memory/3768-10-0x0000000000000000-mapping.dmp
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memory/3768-11-0x0000000000000000-mapping.dmp
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memory/3768-5-0x0000000000000000-mapping.dmp
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memory/3820-1-0x0000000000000000-mapping.dmp