65209a1c9e0c0c1d5cfa80df4ff1ba6d1742e1b5ac8a4e32b38e49749c312cdd

Analysis

max time kernel
61s
max time network
128s
platform
windows10-2004_x64
resource
win10v2004-20230220-en
resource tags

arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
submitted
13/05/2023, 14:26

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General

Target

tmp.exe
Size

631KB
MD5

145186629cf226ca987625b55ed9e9c7
SHA1

8203cfc6a8dc0ffae22167e0735a6e9169fe279d
SHA256

65209a1c9e0c0c1d5cfa80df4ff1ba6d1742e1b5ac8a4e32b38e49749c312cdd
SHA512

57e8a81cce89bfd81610f246e7b2afb92cff1848d3a67cbaf2910c7925208262458fc37232cbcf8b26017911c923a1acd7841acb29ac9c0915bb0a13217ea5ce
SSDEEP

12288:6Lo/Jm2IhImMeg+gk4GEcMRwAciycSHKW3:6LwmZMz3GuRwAcK

Score

10^/10

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\USER\S-1-5-21-2548970870-3691742953-3895070203-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,\"C:\\Users\\Admin\\AppData\\Roaming\\ViperFolder\\FiperG.exe\","	tmp.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3960 set thread context of 3252	3960	tmp.exe	83

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
3252	RegAsm.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3960	tmp.exe
3960	tmp.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3960	tmp.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 3960 wrote to memory of 3252	3960	tmp.exe	83
PID 3960 wrote to memory of 3252	3960	tmp.exe	83
PID 3960 wrote to memory of 3252	3960	tmp.exe	83
PID 3960 wrote to memory of 3252	3960	tmp.exe	83
PID 3960 wrote to memory of 3252	3960	tmp.exe	83
PID 3960 wrote to memory of 3252	3960	tmp.exe	83
PID 3960 wrote to memory of 3252	3960	tmp.exe	83
PID 3960 wrote to memory of 3252	3960	tmp.exe	83

C:\Users\Admin\AppData\Local\Temp\tmp.exe
"C:\Users\Admin\AppData\Local\Temp\tmp.exe"
1⤵
- Modifies WinLogon for persistence
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3960
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  2⤵
  - Suspicious behavior: AddClipboardFormatListener
  PID:3252

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

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

memory/3252-139-0x0000000000400000-0x0000000000436000-memory.dmp

Filesize
216KB

Download
memory/3252-141-0x0000000005B00000-0x0000000005B0A000-memory.dmp

Filesize
40KB

Download
memory/3252-142-0x0000000005BB0000-0x0000000005BC0000-memory.dmp

Filesize
64KB

Download
memory/3252-143-0x0000000005BB0000-0x0000000005BC0000-memory.dmp

Filesize
64KB

Download
memory/3960-133-0x0000000000200000-0x00000000002A4000-memory.dmp

Filesize
656KB

Download
memory/3960-134-0x0000000002790000-0x00000000027A0000-memory.dmp

Filesize
64KB

Download
memory/3960-135-0x0000000004DD0000-0x0000000004E36000-memory.dmp

Filesize
408KB

Download
memory/3960-136-0x00000000363C0000-0x0000000036452000-memory.dmp

Filesize
584KB

Download
memory/3960-137-0x0000000036A10000-0x0000000036FB4000-memory.dmp

Filesize
5.6MB

Download