d2e2cdf6a461aad052167a1954786c8dc836fb18f7c58c7ff99e7daa17532cec

Analysis

max time kernel
102s
max time network
104s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
24/08/2024, 15:39

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General

Target

bd031c4ed9776c1d6bfdf9afdc69ae10N.exe
Size

77KB
MD5

bd031c4ed9776c1d6bfdf9afdc69ae10
SHA1

a923b6e0f2f908e0508a67e4e0f73a883287012d
SHA256

d2e2cdf6a461aad052167a1954786c8dc836fb18f7c58c7ff99e7daa17532cec
SHA512

f9109af7741a14d6a1fd9de0f3568906e65faec4cecfa9a13548f077701259474d5b0430793df775e17362ef287091490f662de940fb6ec0de19e79cc0aaadaa
SSDEEP

1536:abSshapMJgKJUuxGmfJPtOgqm1s/XZSWcHl:K25KJFjfJPtOgqm2/XZXY

Score

7^/10

discovery persistence

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2752	winlgon.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\winlgon.exe = "c:\\users\\admin\\appdata\\local\\temp\\winlgon.exe"	bd031c4ed9776c1d6bfdf9afdc69ae10N.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1302416131-1437503476-2806442725-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winlgon.exe = "c:\\users\\admin\\appdata\\local\\temp\\winlgon.exe"	bd031c4ed9776c1d6bfdf9afdc69ae10N.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
1760	2752	WerFault.exe	85
896	3856	WerFault.exe	84

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winlgon.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	bd031c4ed9776c1d6bfdf9afdc69ae10N.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
3856	bd031c4ed9776c1d6bfdf9afdc69ae10N.exe
2752	winlgon.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3856 wrote to memory of 2752	3856	bd031c4ed9776c1d6bfdf9afdc69ae10N.exe	85
PID 3856 wrote to memory of 2752	3856	bd031c4ed9776c1d6bfdf9afdc69ae10N.exe	85
PID 3856 wrote to memory of 2752	3856	bd031c4ed9776c1d6bfdf9afdc69ae10N.exe	85

C:\Users\Admin\AppData\Local\Temp\bd031c4ed9776c1d6bfdf9afdc69ae10N.exe
"C:\Users\Admin\AppData\Local\Temp\bd031c4ed9776c1d6bfdf9afdc69ae10N.exe"
1⤵
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3856
- \??\c:\users\admin\appdata\local\temp\winlgon.exe
  c:\users\admin\appdata\local\temp\winlgon.exe
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:2752
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2752 -s 688
    3⤵
    - Program crash
    PID:1760
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3856 -s 592
  2⤵
  - Program crash
  PID:896

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2752 -ip 2752
1⤵
PID:224

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 476 -p 3856 -ip 3856
1⤵
PID:1184

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

\??\c:\users\admin\appdata\local\temp\winlgon.exe

Filesize
77KB

MD5
3b404ff87205e9eea5d7dc40c66d3e0b

SHA1
728f30e774d2b81863573b64da97cffa410ce1d1

SHA256
6cd492feeb187917db7276bcdafa6ec4a7f08ff287e1f0c17973b7780b612cf6

SHA512
690528c3c35420c04c6b6a7a1d835aab90d83002de3f4af2f7f3d219d91ed85acdd8ccd8b957d7da3339a2738422d87aaeadd66803ec6cf41333d3c804c39eca

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads