403d35d0c528677370a85cf61a7e2c5e1bc5054bf8be26f547e5122413fef64f

General

Target

403d35d0c528677370a85cf61a7e2c5e1bc5054bf8be26f547e5122413fef64f.exe
Size

43KB
MD5

61f18931625617c97d09a31916cee96b
SHA1

72e7a1e17a7032b6e7981a00170f1f3b57c381e5
SHA256

403d35d0c528677370a85cf61a7e2c5e1bc5054bf8be26f547e5122413fef64f
SHA512

5366b559179b16f2b25465fb2785729df9df59c59d1ca11c0212b29feabb9482fc39faadad67eef1d3b4230bc94414bd49cd3996b9beaa68e6fd04a8235d25ba
SSDEEP

768:gMDOh8Xl0/FSg/qIvqr+9VTP2at5T146HLjHHgqvtq1QRtJ1dedNmnMiHCCjPkau:i53VyOtHHW+gduHCCrk

Score

8^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2004	winlogon.exe

Modifies Windows Firewall 1 TTPs 1 IoCs

evasion

Modify Existing Service

T1031

pid	Process
1424	netsh.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\8fec47ea2031d7c684beb0d0a36361b8.exe	winlogon.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\8fec47ea2031d7c684beb0d0a36361b8.exe	winlogon.exe

Loads dropped DLL 1 IoCs

pid	Process
1068	403d35d0c528677370a85cf61a7e2c5e1bc5054bf8be26f547e5122413fef64f.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\8fec47ea2031d7c684beb0d0a36361b8 = "\"C:\\Users\\Admin\\AppData\\Roaming\\winlogon.exe\" .."	winlogon.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\8fec47ea2031d7c684beb0d0a36361b8 = "\"C:\\Users\\Admin\\AppData\\Roaming\\winlogon.exe\" .."	winlogon.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2004	winlogon.exe
2004	winlogon.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2004	winlogon.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1068 wrote to memory of 2004	1068	403d35d0c528677370a85cf61a7e2c5e1bc5054bf8be26f547e5122413fef64f.exe	28
PID 1068 wrote to memory of 2004	1068	403d35d0c528677370a85cf61a7e2c5e1bc5054bf8be26f547e5122413fef64f.exe	28
PID 1068 wrote to memory of 2004	1068	403d35d0c528677370a85cf61a7e2c5e1bc5054bf8be26f547e5122413fef64f.exe	28
PID 1068 wrote to memory of 2004	1068	403d35d0c528677370a85cf61a7e2c5e1bc5054bf8be26f547e5122413fef64f.exe	28
PID 2004 wrote to memory of 1424	2004	winlogon.exe	29
PID 2004 wrote to memory of 1424	2004	winlogon.exe	29
PID 2004 wrote to memory of 1424	2004	winlogon.exe	29
PID 2004 wrote to memory of 1424	2004	winlogon.exe	29

C:\Users\Admin\AppData\Local\Temp\403d35d0c528677370a85cf61a7e2c5e1bc5054bf8be26f547e5122413fef64f.exe
"C:\Users\Admin\AppData\Local\Temp\403d35d0c528677370a85cf61a7e2c5e1bc5054bf8be26f547e5122413fef64f.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1068
- C:\Users\Admin\AppData\Roaming\winlogon.exe
  "C:\Users\Admin\AppData\Roaming\winlogon.exe"
  2⤵
  - Executes dropped EXE
  - Drops startup file
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2004
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\winlogon.exe" "winlogon.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    PID:1424

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Modify Existing Service

1

T1031

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\winlogon.exe

Filesize
43KB

MD5
61f18931625617c97d09a31916cee96b

SHA1
72e7a1e17a7032b6e7981a00170f1f3b57c381e5

SHA256
403d35d0c528677370a85cf61a7e2c5e1bc5054bf8be26f547e5122413fef64f

SHA512
5366b559179b16f2b25465fb2785729df9df59c59d1ca11c0212b29feabb9482fc39faadad67eef1d3b4230bc94414bd49cd3996b9beaa68e6fd04a8235d25ba

Download Submit
C:\Users\Admin\AppData\Roaming\winlogon.exe

Filesize
43KB

MD5
61f18931625617c97d09a31916cee96b

SHA1
72e7a1e17a7032b6e7981a00170f1f3b57c381e5

SHA256
403d35d0c528677370a85cf61a7e2c5e1bc5054bf8be26f547e5122413fef64f

SHA512
5366b559179b16f2b25465fb2785729df9df59c59d1ca11c0212b29feabb9482fc39faadad67eef1d3b4230bc94414bd49cd3996b9beaa68e6fd04a8235d25ba

Download Submit
\Users\Admin\AppData\Roaming\winlogon.exe

Filesize
43KB

MD5
61f18931625617c97d09a31916cee96b

SHA1
72e7a1e17a7032b6e7981a00170f1f3b57c381e5

SHA256
403d35d0c528677370a85cf61a7e2c5e1bc5054bf8be26f547e5122413fef64f

SHA512
5366b559179b16f2b25465fb2785729df9df59c59d1ca11c0212b29feabb9482fc39faadad67eef1d3b4230bc94414bd49cd3996b9beaa68e6fd04a8235d25ba

Download Submit
memory/1068-54-0x0000000075A91000-0x0000000075A93000-memory.dmp

Filesize
8KB

Download
memory/1068-61-0x0000000074110000-0x00000000746BB000-memory.dmp

Filesize
5.7MB

Download
memory/2004-62-0x0000000074110000-0x00000000746BB000-memory.dmp

Filesize
5.7MB

Download
memory/2004-64-0x0000000074110000-0x00000000746BB000-memory.dmp

Filesize
5.7MB

Download

Analysis

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