1b8621d6e97ce87a8a5664699d285f417a5a08c40fb658aac9178dc5a6d4826c

Analysis

max time kernel
11s
max time network
51s
platform
windows7_x64
resource
win7v20210408
submitted
28-05-2021 09:57

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General

Target

21dd66ef4b2d0bf877fd6386c3dbc43457f982f5f67eed23c8b7c34234cda448.bin.sample.exe
Size

87KB
MD5

f889c06ea602eb23ff52c32fe68a2681
SHA1

0a65a614602f220e2c16aeb6b849b1cd86cc748c
SHA256

21dd66ef4b2d0bf877fd6386c3dbc43457f982f5f67eed23c8b7c34234cda448
SHA512

caf4bc0ed5195d882d84dc8c6b431fb0aefe001a724d022f846f423983cbaf3d8753f849e58f1b91406d2905798d41b4f4f53540024b5c6fe2edc3eb254276dc

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\\21dd66ef4b2d0bf877fd6386c3dbc43457f982f5f67eed23c8b7c34234cda448.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

1492 bcdedit.exe

pid	process
1492	bcdedit.exe

Windows security modification 2 TTPs 1 IoCs

evasion trojan

Disabling Security Tools

T1089

Modify Registry

T1112

Processes:

21dd66ef4b2d0bf877fd6386c3dbc43457f982f5f67eed23c8b7c34234cda448.bin.sample.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Features	21dd66ef4b2d0bf877fd6386c3dbc43457f982f5f67eed23c8b7c34234cda448.bin.sample.exe

Modifies registry key 1 TTPs 1 IoCs

Modify Registry
T1112

Processes:

reg.exe

pid process

1640 reg.exe
Runs net.exe

pid	process
1640	reg.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

21dd66ef4b2d0bf877fd6386c3dbc43457f982f5f67eed23c8b7c34234cda448.bin.sample.exe

pid	process
800	21dd66ef4b2d0bf877fd6386c3dbc43457f982f5f67eed23c8b7c34234cda448.bin.sample.exe
800	21dd66ef4b2d0bf877fd6386c3dbc43457f982f5f67eed23c8b7c34234cda448.bin.sample.exe
800	21dd66ef4b2d0bf877fd6386c3dbc43457f982f5f67eed23c8b7c34234cda448.bin.sample.exe
800	21dd66ef4b2d0bf877fd6386c3dbc43457f982f5f67eed23c8b7c34234cda448.bin.sample.exe
800	21dd66ef4b2d0bf877fd6386c3dbc43457f982f5f67eed23c8b7c34234cda448.bin.sample.exe
800	21dd66ef4b2d0bf877fd6386c3dbc43457f982f5f67eed23c8b7c34234cda448.bin.sample.exe
800	21dd66ef4b2d0bf877fd6386c3dbc43457f982f5f67eed23c8b7c34234cda448.bin.sample.exe
800	21dd66ef4b2d0bf877fd6386c3dbc43457f982f5f67eed23c8b7c34234cda448.bin.sample.exe
800	21dd66ef4b2d0bf877fd6386c3dbc43457f982f5f67eed23c8b7c34234cda448.bin.sample.exe
800	21dd66ef4b2d0bf877fd6386c3dbc43457f982f5f67eed23c8b7c34234cda448.bin.sample.exe
800	21dd66ef4b2d0bf877fd6386c3dbc43457f982f5f67eed23c8b7c34234cda448.bin.sample.exe
800	21dd66ef4b2d0bf877fd6386c3dbc43457f982f5f67eed23c8b7c34234cda448.bin.sample.exe
800	21dd66ef4b2d0bf877fd6386c3dbc43457f982f5f67eed23c8b7c34234cda448.bin.sample.exe
800	21dd66ef4b2d0bf877fd6386c3dbc43457f982f5f67eed23c8b7c34234cda448.bin.sample.exe
800	21dd66ef4b2d0bf877fd6386c3dbc43457f982f5f67eed23c8b7c34234cda448.bin.sample.exe
800	21dd66ef4b2d0bf877fd6386c3dbc43457f982f5f67eed23c8b7c34234cda448.bin.sample.exe
800	21dd66ef4b2d0bf877fd6386c3dbc43457f982f5f67eed23c8b7c34234cda448.bin.sample.exe
800	21dd66ef4b2d0bf877fd6386c3dbc43457f982f5f67eed23c8b7c34234cda448.bin.sample.exe
800	21dd66ef4b2d0bf877fd6386c3dbc43457f982f5f67eed23c8b7c34234cda448.bin.sample.exe
800	21dd66ef4b2d0bf877fd6386c3dbc43457f982f5f67eed23c8b7c34234cda448.bin.sample.exe
800	21dd66ef4b2d0bf877fd6386c3dbc43457f982f5f67eed23c8b7c34234cda448.bin.sample.exe
800	21dd66ef4b2d0bf877fd6386c3dbc43457f982f5f67eed23c8b7c34234cda448.bin.sample.exe
800	21dd66ef4b2d0bf877fd6386c3dbc43457f982f5f67eed23c8b7c34234cda448.bin.sample.exe
800	21dd66ef4b2d0bf877fd6386c3dbc43457f982f5f67eed23c8b7c34234cda448.bin.sample.exe
800	21dd66ef4b2d0bf877fd6386c3dbc43457f982f5f67eed23c8b7c34234cda448.bin.sample.exe
800	21dd66ef4b2d0bf877fd6386c3dbc43457f982f5f67eed23c8b7c34234cda448.bin.sample.exe
800	21dd66ef4b2d0bf877fd6386c3dbc43457f982f5f67eed23c8b7c34234cda448.bin.sample.exe
800	21dd66ef4b2d0bf877fd6386c3dbc43457f982f5f67eed23c8b7c34234cda448.bin.sample.exe
800	21dd66ef4b2d0bf877fd6386c3dbc43457f982f5f67eed23c8b7c34234cda448.bin.sample.exe
800	21dd66ef4b2d0bf877fd6386c3dbc43457f982f5f67eed23c8b7c34234cda448.bin.sample.exe
800	21dd66ef4b2d0bf877fd6386c3dbc43457f982f5f67eed23c8b7c34234cda448.bin.sample.exe
800	21dd66ef4b2d0bf877fd6386c3dbc43457f982f5f67eed23c8b7c34234cda448.bin.sample.exe
800	21dd66ef4b2d0bf877fd6386c3dbc43457f982f5f67eed23c8b7c34234cda448.bin.sample.exe
800	21dd66ef4b2d0bf877fd6386c3dbc43457f982f5f67eed23c8b7c34234cda448.bin.sample.exe
800	21dd66ef4b2d0bf877fd6386c3dbc43457f982f5f67eed23c8b7c34234cda448.bin.sample.exe
800	21dd66ef4b2d0bf877fd6386c3dbc43457f982f5f67eed23c8b7c34234cda448.bin.sample.exe
800	21dd66ef4b2d0bf877fd6386c3dbc43457f982f5f67eed23c8b7c34234cda448.bin.sample.exe
800	21dd66ef4b2d0bf877fd6386c3dbc43457f982f5f67eed23c8b7c34234cda448.bin.sample.exe
800	21dd66ef4b2d0bf877fd6386c3dbc43457f982f5f67eed23c8b7c34234cda448.bin.sample.exe
800	21dd66ef4b2d0bf877fd6386c3dbc43457f982f5f67eed23c8b7c34234cda448.bin.sample.exe
800	21dd66ef4b2d0bf877fd6386c3dbc43457f982f5f67eed23c8b7c34234cda448.bin.sample.exe
800	21dd66ef4b2d0bf877fd6386c3dbc43457f982f5f67eed23c8b7c34234cda448.bin.sample.exe
800	21dd66ef4b2d0bf877fd6386c3dbc43457f982f5f67eed23c8b7c34234cda448.bin.sample.exe
800	21dd66ef4b2d0bf877fd6386c3dbc43457f982f5f67eed23c8b7c34234cda448.bin.sample.exe
800	21dd66ef4b2d0bf877fd6386c3dbc43457f982f5f67eed23c8b7c34234cda448.bin.sample.exe
800	21dd66ef4b2d0bf877fd6386c3dbc43457f982f5f67eed23c8b7c34234cda448.bin.sample.exe
800	21dd66ef4b2d0bf877fd6386c3dbc43457f982f5f67eed23c8b7c34234cda448.bin.sample.exe
800	21dd66ef4b2d0bf877fd6386c3dbc43457f982f5f67eed23c8b7c34234cda448.bin.sample.exe
800	21dd66ef4b2d0bf877fd6386c3dbc43457f982f5f67eed23c8b7c34234cda448.bin.sample.exe
800	21dd66ef4b2d0bf877fd6386c3dbc43457f982f5f67eed23c8b7c34234cda448.bin.sample.exe
800	21dd66ef4b2d0bf877fd6386c3dbc43457f982f5f67eed23c8b7c34234cda448.bin.sample.exe
800	21dd66ef4b2d0bf877fd6386c3dbc43457f982f5f67eed23c8b7c34234cda448.bin.sample.exe
800	21dd66ef4b2d0bf877fd6386c3dbc43457f982f5f67eed23c8b7c34234cda448.bin.sample.exe
800	21dd66ef4b2d0bf877fd6386c3dbc43457f982f5f67eed23c8b7c34234cda448.bin.sample.exe
800	21dd66ef4b2d0bf877fd6386c3dbc43457f982f5f67eed23c8b7c34234cda448.bin.sample.exe
800	21dd66ef4b2d0bf877fd6386c3dbc43457f982f5f67eed23c8b7c34234cda448.bin.sample.exe
800	21dd66ef4b2d0bf877fd6386c3dbc43457f982f5f67eed23c8b7c34234cda448.bin.sample.exe
800	21dd66ef4b2d0bf877fd6386c3dbc43457f982f5f67eed23c8b7c34234cda448.bin.sample.exe
800	21dd66ef4b2d0bf877fd6386c3dbc43457f982f5f67eed23c8b7c34234cda448.bin.sample.exe
800	21dd66ef4b2d0bf877fd6386c3dbc43457f982f5f67eed23c8b7c34234cda448.bin.sample.exe
800	21dd66ef4b2d0bf877fd6386c3dbc43457f982f5f67eed23c8b7c34234cda448.bin.sample.exe
800	21dd66ef4b2d0bf877fd6386c3dbc43457f982f5f67eed23c8b7c34234cda448.bin.sample.exe
800	21dd66ef4b2d0bf877fd6386c3dbc43457f982f5f67eed23c8b7c34234cda448.bin.sample.exe
800	21dd66ef4b2d0bf877fd6386c3dbc43457f982f5f67eed23c8b7c34234cda448.bin.sample.exe

Suspicious use of AdjustPrivilegeToken 7 IoCs

Processes:

21dd66ef4b2d0bf877fd6386c3dbc43457f982f5f67eed23c8b7c34234cda448.bin.sample.exeshutdown.exeAUDIODG.EXE

description	pid	process
Token: SeDebugPrivilege	800	21dd66ef4b2d0bf877fd6386c3dbc43457f982f5f67eed23c8b7c34234cda448.bin.sample.exe
Token: SeShutdownPrivilege	1076	shutdown.exe
Token: SeRemoteShutdownPrivilege	1076	shutdown.exe
Token: 33	864	AUDIODG.EXE
Token: SeIncBasePriorityPrivilege	864	AUDIODG.EXE
Token: 33	864	AUDIODG.EXE
Token: SeIncBasePriorityPrivilege	864	AUDIODG.EXE

Suspicious use of WriteProcessMemory 21 IoCs

Processes:

21dd66ef4b2d0bf877fd6386c3dbc43457f982f5f67eed23c8b7c34234cda448.bin.sample.exenet.exe

description	pid	process	target process
PID 800 wrote to memory of 1640	800	21dd66ef4b2d0bf877fd6386c3dbc43457f982f5f67eed23c8b7c34234cda448.bin.sample.exe	reg.exe
PID 800 wrote to memory of 1640	800	21dd66ef4b2d0bf877fd6386c3dbc43457f982f5f67eed23c8b7c34234cda448.bin.sample.exe	reg.exe
PID 800 wrote to memory of 1640	800	21dd66ef4b2d0bf877fd6386c3dbc43457f982f5f67eed23c8b7c34234cda448.bin.sample.exe	reg.exe
PID 800 wrote to memory of 1492	800	21dd66ef4b2d0bf877fd6386c3dbc43457f982f5f67eed23c8b7c34234cda448.bin.sample.exe	bcdedit.exe
PID 800 wrote to memory of 1492	800	21dd66ef4b2d0bf877fd6386c3dbc43457f982f5f67eed23c8b7c34234cda448.bin.sample.exe	bcdedit.exe
PID 800 wrote to memory of 1492	800	21dd66ef4b2d0bf877fd6386c3dbc43457f982f5f67eed23c8b7c34234cda448.bin.sample.exe	bcdedit.exe
PID 800 wrote to memory of 1604	800	21dd66ef4b2d0bf877fd6386c3dbc43457f982f5f67eed23c8b7c34234cda448.bin.sample.exe	reg.exe
PID 800 wrote to memory of 1604	800	21dd66ef4b2d0bf877fd6386c3dbc43457f982f5f67eed23c8b7c34234cda448.bin.sample.exe	reg.exe
PID 800 wrote to memory of 1604	800	21dd66ef4b2d0bf877fd6386c3dbc43457f982f5f67eed23c8b7c34234cda448.bin.sample.exe	reg.exe
PID 800 wrote to memory of 824	800	21dd66ef4b2d0bf877fd6386c3dbc43457f982f5f67eed23c8b7c34234cda448.bin.sample.exe	net.exe
PID 800 wrote to memory of 824	800	21dd66ef4b2d0bf877fd6386c3dbc43457f982f5f67eed23c8b7c34234cda448.bin.sample.exe	net.exe
PID 800 wrote to memory of 824	800	21dd66ef4b2d0bf877fd6386c3dbc43457f982f5f67eed23c8b7c34234cda448.bin.sample.exe	net.exe
PID 800 wrote to memory of 1076	800	21dd66ef4b2d0bf877fd6386c3dbc43457f982f5f67eed23c8b7c34234cda448.bin.sample.exe	shutdown.exe
PID 800 wrote to memory of 1076	800	21dd66ef4b2d0bf877fd6386c3dbc43457f982f5f67eed23c8b7c34234cda448.bin.sample.exe	shutdown.exe
PID 800 wrote to memory of 1076	800	21dd66ef4b2d0bf877fd6386c3dbc43457f982f5f67eed23c8b7c34234cda448.bin.sample.exe	shutdown.exe
PID 824 wrote to memory of 1432	824	net.exe	net1.exe
PID 824 wrote to memory of 1432	824	net.exe	net1.exe
PID 824 wrote to memory of 1432	824	net.exe	net1.exe
PID 800 wrote to memory of 300	800	21dd66ef4b2d0bf877fd6386c3dbc43457f982f5f67eed23c8b7c34234cda448.bin.sample.exe	powershell.exe
PID 800 wrote to memory of 300	800	21dd66ef4b2d0bf877fd6386c3dbc43457f982f5f67eed23c8b7c34234cda448.bin.sample.exe	powershell.exe
PID 800 wrote to memory of 300	800	21dd66ef4b2d0bf877fd6386c3dbc43457f982f5f67eed23c8b7c34234cda448.bin.sample.exe	powershell.exe

C:\Users\Admin\AppData\Local\Temp\21dd66ef4b2d0bf877fd6386c3dbc43457f982f5f67eed23c8b7c34234cda448.bin.sample.exe
"C:\Users\Admin\AppData\Local\Temp\21dd66ef4b2d0bf877fd6386c3dbc43457f982f5f67eed23c8b7c34234cda448.bin.sample.exe"
1⤵
- Windows security modification
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:800
- C:\Windows\system32\reg.exe
  "reg.exe" delete HKLM\System\CurrentControlSet\Control\SafeBoot\Minimal\WinDefend /f
  2⤵
  - Modifies registry key
  PID:1640
- C:\Windows\system32\bcdedit.exe
  "bcdedit.exe" /set {default} safeboot network
  2⤵
  - Modifies boot configuration data using bcdedit
  PID:1492
- 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\21dd66ef4b2d0bf877fd6386c3dbc43457f982f5f67eed23c8b7c34234cda448.bin.sample.exe","C:\Windows\system32\userinit.exe" /f
  2⤵
  - Modifies WinLogon for persistence
  PID:1604
- C:\Windows\system32\net.exe
  "net.exe" user Admin ""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:824
- - C:\Windows\system32\net1.exe
    C:\Windows\system32\net1 user Admin ""
    3⤵
    PID:1432
- C:\Windows\system32\shutdown.exe
  "shutdown.exe" /r /t 0
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1076
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell" Get-MpPreference -verbose
  2⤵
  PID:300

C:\Windows\system32\LogonUI.exe
"LogonUI.exe" /flags:0x0
1⤵
PID:944

C:\Windows\system32\AUDIODG.EXE
C:\Windows\system32\AUDIODG.EXE 0x460
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:864

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/300-70-0x0000000002370000-0x0000000002371000-memory.dmp

Filesize
4KB

Download
memory/300-72-0x000000001AA50000-0x000000001AA52000-memory.dmp

Filesize
8KB

Download
memory/300-74-0x000000001AA54000-0x000000001AA56000-memory.dmp

Filesize
8KB

Download
memory/300-73-0x000000001AC50000-0x000000001AC51000-memory.dmp

Filesize
4KB

Download
memory/300-68-0x0000000000000000-mapping.dmp

Download
memory/300-69-0x000007FEFB531000-0x000007FEFB533000-memory.dmp

Filesize
8KB

Download
memory/800-65-0x000000001AEB0000-0x000000001AEB2000-memory.dmp

Filesize
8KB

Download
memory/800-59-0x0000000000AD0000-0x0000000000AD1000-memory.dmp

Filesize
4KB

Download
memory/824-64-0x0000000000000000-mapping.dmp

Download
memory/944-75-0x0000000002840000-0x0000000002841000-memory.dmp

Filesize
4KB

Download
memory/1076-66-0x0000000000000000-mapping.dmp

Download
memory/1432-67-0x0000000000000000-mapping.dmp

Download
memory/1492-62-0x0000000000000000-mapping.dmp

Download
memory/1604-63-0x0000000000000000-mapping.dmp

Download
memory/1640-61-0x0000000000000000-mapping.dmp

Download