b4c06bb81f97cf90a2097a587ecdc950689fa89ef6f223134712d02f15f66883

Analysis

max time kernel
149s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
06/12/2022, 08:05

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General

Target

b4c06bb81f97cf90a2097a587ecdc950689fa89ef6f223134712d02f15f66883.exe
Size

23KB
MD5

7193b531605532242806a6a37fdc4b58
SHA1

fa64fbf72c4a9c5190edcdefc346dbc829fee7ef
SHA256

b4c06bb81f97cf90a2097a587ecdc950689fa89ef6f223134712d02f15f66883
SHA512

4a311c7b1a3d1be240283262a65767e9be853a09c08302363ce2eb8c3c17f7c77b602ea2653ffcf9de9b30833704431bd5035cfe979ed9979bf36a8441c5c1ad
SSDEEP

384:CLJ0kGOFOGFtfFVk/wQPpwsjvt1RP+/R8HWhsRf3oyMsB5g:CNbfUYQPzjvt1ZWhsRASg

Score

10^/10

evasion persistence

Malware Config

Signatures

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\shell = "Explorer.exe C:\\Users\\Admin\\AppData\\Local\\Temp\\svchost.exe"	svchost.exe

Modifies firewall policy service 2 TTPs 4 IoCs

evasion

Modify Registry

T1112

Modify Existing Service

T1031

description	ioc	Process
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List	svchost.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile	svchost.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications	svchost.exe
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List\C:\Users\Admin\AppData\Local\Temp\svchost.exe = "C:\\Users\\Admin\\AppData\\Local\\Temp\\svchost.exe:*:Enabled:svchost.exe"	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4844	svchost.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 4084 wrote to memory of 1764	4084	b4c06bb81f97cf90a2097a587ecdc950689fa89ef6f223134712d02f15f66883.exe	79
PID 4084 wrote to memory of 1764	4084	b4c06bb81f97cf90a2097a587ecdc950689fa89ef6f223134712d02f15f66883.exe	79
PID 4084 wrote to memory of 1764	4084	b4c06bb81f97cf90a2097a587ecdc950689fa89ef6f223134712d02f15f66883.exe	79
PID 4084 wrote to memory of 4308	4084	b4c06bb81f97cf90a2097a587ecdc950689fa89ef6f223134712d02f15f66883.exe	81
PID 4084 wrote to memory of 4308	4084	b4c06bb81f97cf90a2097a587ecdc950689fa89ef6f223134712d02f15f66883.exe	81
PID 4084 wrote to memory of 4308	4084	b4c06bb81f97cf90a2097a587ecdc950689fa89ef6f223134712d02f15f66883.exe	81
PID 4308 wrote to memory of 4844	4308	cmd.exe	83
PID 4308 wrote to memory of 4844	4308	cmd.exe	83
PID 4308 wrote to memory of 4844	4308	cmd.exe	83

C:\Users\Admin\AppData\Local\Temp\b4c06bb81f97cf90a2097a587ecdc950689fa89ef6f223134712d02f15f66883.exe
"C:\Users\Admin\AppData\Local\Temp\b4c06bb81f97cf90a2097a587ecdc950689fa89ef6f223134712d02f15f66883.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:4084
- C:\Windows\SysWOW64\cmd.exe
  cmd /c copy "C:\Users\Admin\AppData\Local\Temp\b4c06bb81f97cf90a2097a587ecdc950689fa89ef6f223134712d02f15f66883.exe" "C:\Users\Admin\AppData\Local\Temp\svchost.exe"
  2⤵
  PID:1764
- C:\Windows\SysWOW64\cmd.exe
  cmd /c "C:\Users\Admin\AppData\Local\Temp\svchost.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4308
- - C:\Users\Admin\AppData\Local\Temp\svchost.exe
    C:\Users\Admin\AppData\Local\Temp\svchost.exe
    3⤵
    - Modifies WinLogon for persistence
    - Modifies firewall policy service
    - Executes dropped EXE
    PID:4844

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Modify Existing Service

T1031

Winlogon Helper DLL

T1004

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\svchost.exe

Filesize
23KB

MD5
7193b531605532242806a6a37fdc4b58

SHA1
fa64fbf72c4a9c5190edcdefc346dbc829fee7ef

SHA256
b4c06bb81f97cf90a2097a587ecdc950689fa89ef6f223134712d02f15f66883

SHA512
4a311c7b1a3d1be240283262a65767e9be853a09c08302363ce2eb8c3c17f7c77b602ea2653ffcf9de9b30833704431bd5035cfe979ed9979bf36a8441c5c1ad

Download Submit
C:\Users\Admin\AppData\Local\Temp\svchost.exe

Filesize
23KB

MD5
7193b531605532242806a6a37fdc4b58

SHA1
fa64fbf72c4a9c5190edcdefc346dbc829fee7ef

SHA256
b4c06bb81f97cf90a2097a587ecdc950689fa89ef6f223134712d02f15f66883

SHA512
4a311c7b1a3d1be240283262a65767e9be853a09c08302363ce2eb8c3c17f7c77b602ea2653ffcf9de9b30833704431bd5035cfe979ed9979bf36a8441c5c1ad

Download Submit
memory/4084-132-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/4084-138-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/4844-139-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/4844-140-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads