1b8621d6e97ce87a8a5664699d285f417a5a08c40fb658aac9178dc5a6d4826c

Analysis

max time kernel
9s
max time network
4s
platform
windows7_x64
resource
win7v20210410
submitted
28-05-2021 09:57

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General

Target

4fefb51009b09d77ae3300be1f350dd0d301cbaac75b50053dcf1a39673302b7.bin.sample.exe
Size

87KB
MD5

3f52b4b4c36af074135666480cd1b65e
SHA1

66d1435061a72556fff47e6676d5531b48f883da
SHA256

4fefb51009b09d77ae3300be1f350dd0d301cbaac75b50053dcf1a39673302b7
SHA512

d5c9e97d0733c6a938f90b45c236abd2cbb0b756246920c30c2e8e615588237a11e52904a26acc3d1dd7496943060158239b60d2665ba53637bf0df8b2b6b11e

Score

10^/10

evasion persistence ransomware trojan

Malware Config

Signatures

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1004

Modify Registry

T1112

Processes:

reg.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Userinit = "C:\\Users\\Admin\\AppData\\Local\\Temp\\4fefb51009b09d77ae3300be1f350dd0d301cbaac75b50053dcf1a39673302b7.bin.sample.exe,C:\\Windows\\system32\\userinit.exe"	reg.exe

Modifies Windows Defender Real-time Protection settings 3 TTPs
evasion trojan

Modify Registry
T1112

Modify Existing Service
T1031

Disabling Security Tools
T1089
Modifies boot configuration data using bcdedit 1 TTPs 1 IoCs
ransomware evasion

Inhibit System Recovery
T1490

Processes:

bcdedit.exe

pid process

1964 bcdedit.exe

pid	process
1964	bcdedit.exe

Windows security modification 2 TTPs 1 IoCs

evasion trojan

Disabling Security Tools

T1089

Modify Registry

T1112

Processes:

4fefb51009b09d77ae3300be1f350dd0d301cbaac75b50053dcf1a39673302b7.bin.sample.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Features	4fefb51009b09d77ae3300be1f350dd0d301cbaac75b50053dcf1a39673302b7.bin.sample.exe

Modifies registry key 1 TTPs 1 IoCs

Modify Registry
T1112

Processes:

reg.exe

pid process

1160 reg.exe
Runs net.exe

pid	process
1160	reg.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

4fefb51009b09d77ae3300be1f350dd0d301cbaac75b50053dcf1a39673302b7.bin.sample.exe

pid	process
1056	4fefb51009b09d77ae3300be1f350dd0d301cbaac75b50053dcf1a39673302b7.bin.sample.exe
1056	4fefb51009b09d77ae3300be1f350dd0d301cbaac75b50053dcf1a39673302b7.bin.sample.exe
1056	4fefb51009b09d77ae3300be1f350dd0d301cbaac75b50053dcf1a39673302b7.bin.sample.exe
1056	4fefb51009b09d77ae3300be1f350dd0d301cbaac75b50053dcf1a39673302b7.bin.sample.exe
1056	4fefb51009b09d77ae3300be1f350dd0d301cbaac75b50053dcf1a39673302b7.bin.sample.exe
1056	4fefb51009b09d77ae3300be1f350dd0d301cbaac75b50053dcf1a39673302b7.bin.sample.exe
1056	4fefb51009b09d77ae3300be1f350dd0d301cbaac75b50053dcf1a39673302b7.bin.sample.exe
1056	4fefb51009b09d77ae3300be1f350dd0d301cbaac75b50053dcf1a39673302b7.bin.sample.exe
1056	4fefb51009b09d77ae3300be1f350dd0d301cbaac75b50053dcf1a39673302b7.bin.sample.exe
1056	4fefb51009b09d77ae3300be1f350dd0d301cbaac75b50053dcf1a39673302b7.bin.sample.exe
1056	4fefb51009b09d77ae3300be1f350dd0d301cbaac75b50053dcf1a39673302b7.bin.sample.exe
1056	4fefb51009b09d77ae3300be1f350dd0d301cbaac75b50053dcf1a39673302b7.bin.sample.exe
1056	4fefb51009b09d77ae3300be1f350dd0d301cbaac75b50053dcf1a39673302b7.bin.sample.exe
1056	4fefb51009b09d77ae3300be1f350dd0d301cbaac75b50053dcf1a39673302b7.bin.sample.exe
1056	4fefb51009b09d77ae3300be1f350dd0d301cbaac75b50053dcf1a39673302b7.bin.sample.exe
1056	4fefb51009b09d77ae3300be1f350dd0d301cbaac75b50053dcf1a39673302b7.bin.sample.exe
1056	4fefb51009b09d77ae3300be1f350dd0d301cbaac75b50053dcf1a39673302b7.bin.sample.exe
1056	4fefb51009b09d77ae3300be1f350dd0d301cbaac75b50053dcf1a39673302b7.bin.sample.exe
1056	4fefb51009b09d77ae3300be1f350dd0d301cbaac75b50053dcf1a39673302b7.bin.sample.exe
1056	4fefb51009b09d77ae3300be1f350dd0d301cbaac75b50053dcf1a39673302b7.bin.sample.exe
1056	4fefb51009b09d77ae3300be1f350dd0d301cbaac75b50053dcf1a39673302b7.bin.sample.exe
1056	4fefb51009b09d77ae3300be1f350dd0d301cbaac75b50053dcf1a39673302b7.bin.sample.exe
1056	4fefb51009b09d77ae3300be1f350dd0d301cbaac75b50053dcf1a39673302b7.bin.sample.exe
1056	4fefb51009b09d77ae3300be1f350dd0d301cbaac75b50053dcf1a39673302b7.bin.sample.exe
1056	4fefb51009b09d77ae3300be1f350dd0d301cbaac75b50053dcf1a39673302b7.bin.sample.exe
1056	4fefb51009b09d77ae3300be1f350dd0d301cbaac75b50053dcf1a39673302b7.bin.sample.exe
1056	4fefb51009b09d77ae3300be1f350dd0d301cbaac75b50053dcf1a39673302b7.bin.sample.exe
1056	4fefb51009b09d77ae3300be1f350dd0d301cbaac75b50053dcf1a39673302b7.bin.sample.exe
1056	4fefb51009b09d77ae3300be1f350dd0d301cbaac75b50053dcf1a39673302b7.bin.sample.exe
1056	4fefb51009b09d77ae3300be1f350dd0d301cbaac75b50053dcf1a39673302b7.bin.sample.exe
1056	4fefb51009b09d77ae3300be1f350dd0d301cbaac75b50053dcf1a39673302b7.bin.sample.exe
1056	4fefb51009b09d77ae3300be1f350dd0d301cbaac75b50053dcf1a39673302b7.bin.sample.exe
1056	4fefb51009b09d77ae3300be1f350dd0d301cbaac75b50053dcf1a39673302b7.bin.sample.exe
1056	4fefb51009b09d77ae3300be1f350dd0d301cbaac75b50053dcf1a39673302b7.bin.sample.exe
1056	4fefb51009b09d77ae3300be1f350dd0d301cbaac75b50053dcf1a39673302b7.bin.sample.exe
1056	4fefb51009b09d77ae3300be1f350dd0d301cbaac75b50053dcf1a39673302b7.bin.sample.exe
1056	4fefb51009b09d77ae3300be1f350dd0d301cbaac75b50053dcf1a39673302b7.bin.sample.exe
1056	4fefb51009b09d77ae3300be1f350dd0d301cbaac75b50053dcf1a39673302b7.bin.sample.exe
1056	4fefb51009b09d77ae3300be1f350dd0d301cbaac75b50053dcf1a39673302b7.bin.sample.exe
1056	4fefb51009b09d77ae3300be1f350dd0d301cbaac75b50053dcf1a39673302b7.bin.sample.exe
1056	4fefb51009b09d77ae3300be1f350dd0d301cbaac75b50053dcf1a39673302b7.bin.sample.exe
1056	4fefb51009b09d77ae3300be1f350dd0d301cbaac75b50053dcf1a39673302b7.bin.sample.exe
1056	4fefb51009b09d77ae3300be1f350dd0d301cbaac75b50053dcf1a39673302b7.bin.sample.exe
1056	4fefb51009b09d77ae3300be1f350dd0d301cbaac75b50053dcf1a39673302b7.bin.sample.exe
1056	4fefb51009b09d77ae3300be1f350dd0d301cbaac75b50053dcf1a39673302b7.bin.sample.exe
1056	4fefb51009b09d77ae3300be1f350dd0d301cbaac75b50053dcf1a39673302b7.bin.sample.exe
1056	4fefb51009b09d77ae3300be1f350dd0d301cbaac75b50053dcf1a39673302b7.bin.sample.exe
1056	4fefb51009b09d77ae3300be1f350dd0d301cbaac75b50053dcf1a39673302b7.bin.sample.exe
1056	4fefb51009b09d77ae3300be1f350dd0d301cbaac75b50053dcf1a39673302b7.bin.sample.exe
1056	4fefb51009b09d77ae3300be1f350dd0d301cbaac75b50053dcf1a39673302b7.bin.sample.exe
1056	4fefb51009b09d77ae3300be1f350dd0d301cbaac75b50053dcf1a39673302b7.bin.sample.exe
1056	4fefb51009b09d77ae3300be1f350dd0d301cbaac75b50053dcf1a39673302b7.bin.sample.exe
1056	4fefb51009b09d77ae3300be1f350dd0d301cbaac75b50053dcf1a39673302b7.bin.sample.exe
1056	4fefb51009b09d77ae3300be1f350dd0d301cbaac75b50053dcf1a39673302b7.bin.sample.exe
1056	4fefb51009b09d77ae3300be1f350dd0d301cbaac75b50053dcf1a39673302b7.bin.sample.exe
1056	4fefb51009b09d77ae3300be1f350dd0d301cbaac75b50053dcf1a39673302b7.bin.sample.exe
1056	4fefb51009b09d77ae3300be1f350dd0d301cbaac75b50053dcf1a39673302b7.bin.sample.exe
1056	4fefb51009b09d77ae3300be1f350dd0d301cbaac75b50053dcf1a39673302b7.bin.sample.exe
1056	4fefb51009b09d77ae3300be1f350dd0d301cbaac75b50053dcf1a39673302b7.bin.sample.exe
1056	4fefb51009b09d77ae3300be1f350dd0d301cbaac75b50053dcf1a39673302b7.bin.sample.exe
1056	4fefb51009b09d77ae3300be1f350dd0d301cbaac75b50053dcf1a39673302b7.bin.sample.exe
1056	4fefb51009b09d77ae3300be1f350dd0d301cbaac75b50053dcf1a39673302b7.bin.sample.exe
1056	4fefb51009b09d77ae3300be1f350dd0d301cbaac75b50053dcf1a39673302b7.bin.sample.exe
1056	4fefb51009b09d77ae3300be1f350dd0d301cbaac75b50053dcf1a39673302b7.bin.sample.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

4fefb51009b09d77ae3300be1f350dd0d301cbaac75b50053dcf1a39673302b7.bin.sample.exeshutdown.exe

description	pid	process
Token: SeDebugPrivilege	1056	4fefb51009b09d77ae3300be1f350dd0d301cbaac75b50053dcf1a39673302b7.bin.sample.exe
Token: SeShutdownPrivilege	1756	shutdown.exe
Token: SeRemoteShutdownPrivilege	1756	shutdown.exe

Suspicious use of WriteProcessMemory 21 IoCs

Processes:

4fefb51009b09d77ae3300be1f350dd0d301cbaac75b50053dcf1a39673302b7.bin.sample.exenet.exe

description	pid	process	target process
PID 1056 wrote to memory of 1160	1056	4fefb51009b09d77ae3300be1f350dd0d301cbaac75b50053dcf1a39673302b7.bin.sample.exe	reg.exe
PID 1056 wrote to memory of 1160	1056	4fefb51009b09d77ae3300be1f350dd0d301cbaac75b50053dcf1a39673302b7.bin.sample.exe	reg.exe
PID 1056 wrote to memory of 1160	1056	4fefb51009b09d77ae3300be1f350dd0d301cbaac75b50053dcf1a39673302b7.bin.sample.exe	reg.exe
PID 1056 wrote to memory of 1964	1056	4fefb51009b09d77ae3300be1f350dd0d301cbaac75b50053dcf1a39673302b7.bin.sample.exe	bcdedit.exe
PID 1056 wrote to memory of 1964	1056	4fefb51009b09d77ae3300be1f350dd0d301cbaac75b50053dcf1a39673302b7.bin.sample.exe	bcdedit.exe
PID 1056 wrote to memory of 1964	1056	4fefb51009b09d77ae3300be1f350dd0d301cbaac75b50053dcf1a39673302b7.bin.sample.exe	bcdedit.exe
PID 1056 wrote to memory of 1072	1056	4fefb51009b09d77ae3300be1f350dd0d301cbaac75b50053dcf1a39673302b7.bin.sample.exe	reg.exe
PID 1056 wrote to memory of 1072	1056	4fefb51009b09d77ae3300be1f350dd0d301cbaac75b50053dcf1a39673302b7.bin.sample.exe	reg.exe
PID 1056 wrote to memory of 1072	1056	4fefb51009b09d77ae3300be1f350dd0d301cbaac75b50053dcf1a39673302b7.bin.sample.exe	reg.exe
PID 1056 wrote to memory of 1400	1056	4fefb51009b09d77ae3300be1f350dd0d301cbaac75b50053dcf1a39673302b7.bin.sample.exe	net.exe
PID 1056 wrote to memory of 1400	1056	4fefb51009b09d77ae3300be1f350dd0d301cbaac75b50053dcf1a39673302b7.bin.sample.exe	net.exe
PID 1056 wrote to memory of 1400	1056	4fefb51009b09d77ae3300be1f350dd0d301cbaac75b50053dcf1a39673302b7.bin.sample.exe	net.exe
PID 1056 wrote to memory of 1756	1056	4fefb51009b09d77ae3300be1f350dd0d301cbaac75b50053dcf1a39673302b7.bin.sample.exe	shutdown.exe
PID 1056 wrote to memory of 1756	1056	4fefb51009b09d77ae3300be1f350dd0d301cbaac75b50053dcf1a39673302b7.bin.sample.exe	shutdown.exe
PID 1056 wrote to memory of 1756	1056	4fefb51009b09d77ae3300be1f350dd0d301cbaac75b50053dcf1a39673302b7.bin.sample.exe	shutdown.exe
PID 1400 wrote to memory of 1744	1400	net.exe	net1.exe
PID 1400 wrote to memory of 1744	1400	net.exe	net1.exe
PID 1400 wrote to memory of 1744	1400	net.exe	net1.exe
PID 1056 wrote to memory of 1572	1056	4fefb51009b09d77ae3300be1f350dd0d301cbaac75b50053dcf1a39673302b7.bin.sample.exe	powershell.exe
PID 1056 wrote to memory of 1572	1056	4fefb51009b09d77ae3300be1f350dd0d301cbaac75b50053dcf1a39673302b7.bin.sample.exe	powershell.exe
PID 1056 wrote to memory of 1572	1056	4fefb51009b09d77ae3300be1f350dd0d301cbaac75b50053dcf1a39673302b7.bin.sample.exe	powershell.exe

C:\Users\Admin\AppData\Local\Temp\4fefb51009b09d77ae3300be1f350dd0d301cbaac75b50053dcf1a39673302b7.bin.sample.exe
"C:\Users\Admin\AppData\Local\Temp\4fefb51009b09d77ae3300be1f350dd0d301cbaac75b50053dcf1a39673302b7.bin.sample.exe"
1⤵
- Windows security modification
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1056
- C:\Windows\system32\reg.exe
  "reg.exe" delete HKLM\System\CurrentControlSet\Control\SafeBoot\Minimal\WinDefend /f
  2⤵
  - Modifies registry key
  PID:1160
- C:\Windows\system32\bcdedit.exe
  "bcdedit.exe" /set {default} safeboot network
  2⤵
  - Modifies boot configuration data using bcdedit
  PID:1964
- C:\Windows\system32\net.exe
  "net.exe" user Admin ""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1400
- - C:\Windows\system32\net1.exe
    C:\Windows\system32\net1 user Admin ""
    3⤵
    PID:1744
- C:\Windows\system32\reg.exe
  "reg.exe" add "HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon" /v Userinit /t REG_SZ /d "C:\Users\Admin\AppData\Local\Temp\4fefb51009b09d77ae3300be1f350dd0d301cbaac75b50053dcf1a39673302b7.bin.sample.exe","C:\Windows\system32\userinit.exe" /f
  2⤵
  - Modifies WinLogon for persistence
  PID:1072
- C:\Windows\system32\shutdown.exe
  "shutdown.exe" /r /t 0
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1756
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell" Get-MpPreference -verbose
  2⤵
  PID:1572

C:\Windows\system32\LogonUI.exe
"LogonUI.exe" /flags:0x0
1⤵
PID:368

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Modify Existing Service

T1031

Winlogon Helper DLL

T1004

Privilege Escalation

Defense Evasion

Disabling Security Tools

T1089

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Inhibit System Recovery

T1490

Replay Monitor

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Downloads

memory/368-69-0x000007FEFBFF1000-0x000007FEFBFF3000-memory.dmp

Filesize
8KB

Download
memory/368-72-0x00000000027C0000-0x00000000027C1000-memory.dmp

Filesize
4KB

Download
memory/1056-60-0x0000000000150000-0x0000000000151000-memory.dmp

Filesize
4KB

Download
memory/1056-71-0x000000001AE80000-0x000000001AE82000-memory.dmp

Filesize
8KB

Download
memory/1072-64-0x0000000000000000-mapping.dmp

Download
memory/1160-62-0x0000000000000000-mapping.dmp

Download
memory/1400-65-0x0000000000000000-mapping.dmp

Download
memory/1572-68-0x0000000000000000-mapping.dmp

Download
memory/1744-67-0x0000000000000000-mapping.dmp

Download
memory/1756-66-0x0000000000000000-mapping.dmp

Download
memory/1964-63-0x0000000000000000-mapping.dmp

Download