e4dc58352a3727c6fc42ecad3320695f9fe83a11848f29d8916a8537c7dce67d

Analysis

max time kernel
121s
max time network
122s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
14/03/2024, 16:50

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General

Target

c91fd8ccc0b31e173e68bbc2b967a622.exe
Size

401KB
MD5

c91fd8ccc0b31e173e68bbc2b967a622
SHA1

34ba0950ee85047ddab39e75dec86b2e5c7f0022
SHA256

e4dc58352a3727c6fc42ecad3320695f9fe83a11848f29d8916a8537c7dce67d
SHA512

ae558446f0a749516fe3038dfbcbe4d15d118759a57e4bf2590295d73e144629d23cef945d2af57587726d8a992d5c5bb88eb87e84e139f3897af827dd44da12
SSDEEP

6144:voNgcWRYcHdAFi8Qk0DjecPYoNGatwoapnIvvUkUT/8857YmtHwzGO+YO+j:dciEiBNDtPrpvU/885MZQwj

Score

10^/10

persistence

Malware Config

Signatures

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "Explorer.exe C:\\Windows\\Kvmon.exe"	c91fd8ccc0b31e173e68bbc2b967a622.exe

Drops file in Windows directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Windows\Kvmon.exe	c91fd8ccc0b31e173e68bbc2b967a622.exe
File created	C:\Windows\Kvmon.dll	c91fd8ccc0b31e173e68bbc2b967a622.exe
File created	C:\Windows\Kvmon.exe	c91fd8ccc0b31e173e68bbc2b967a622.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1460	c91fd8ccc0b31e173e68bbc2b967a622.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 1460 wrote to memory of 764	1460	c91fd8ccc0b31e173e68bbc2b967a622.exe	28
PID 1460 wrote to memory of 764	1460	c91fd8ccc0b31e173e68bbc2b967a622.exe	28
PID 1460 wrote to memory of 764	1460	c91fd8ccc0b31e173e68bbc2b967a622.exe	28
PID 1460 wrote to memory of 764	1460	c91fd8ccc0b31e173e68bbc2b967a622.exe	28
PID 1460 wrote to memory of 764	1460	c91fd8ccc0b31e173e68bbc2b967a622.exe	28

C:\Users\Admin\AppData\Local\Temp\c91fd8ccc0b31e173e68bbc2b967a622.exe
"C:\Users\Admin\AppData\Local\Temp\c91fd8ccc0b31e173e68bbc2b967a622.exe"
1⤵
- Modifies WinLogon for persistence
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1460
- C:\Program Files\Internet Explorer\IEXPLORE.EXE
  about:blank
  2⤵
  PID:764

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Winlogon Helper DLL

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Winlogon Helper DLL

T1547.004

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1460-2-0x0000000000400000-0x000000000046A000-memory.dmp

Filesize
424KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads