d3c5dfc940753fc819ace0c55216442a7cb090fec27e856071da176efdbc87c0

General

Target

56392089cbf8187636317ab83a2c12aa.exe
Size

15KB
MD5

56392089cbf8187636317ab83a2c12aa
SHA1

29dde0eba73888ebdb049278829862be70d2dc1e
SHA256

d3c5dfc940753fc819ace0c55216442a7cb090fec27e856071da176efdbc87c0
SHA512

fb6e9b85d4067d109cec37546c545e1dbac29d528912b2189b368e663fd4ad66b2f5dc34e117ef53cfc3674e8bcae8a1e4a4282ced9664f261b5ac967793472b
SSDEEP

384:AERvojPXWhimbGz7RyaWtugEzCkLAExM842:LRksghxMN

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\\csrss.exe\""	csrss.exe

Deletes itself 1 IoCs

pid	Process
2780	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
2824	csrss.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\csrss.exe	cmd.exe
File opened for modification	C:\Windows\csrss.exe	cmd.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	2976	56392089cbf8187636317ab83a2c12aa.exe
Token: SeIncBasePriorityPrivilege	2976	56392089cbf8187636317ab83a2c12aa.exe
Token: SeIncBasePriorityPrivilege	2976	56392089cbf8187636317ab83a2c12aa.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2976 wrote to memory of 2232	2976	56392089cbf8187636317ab83a2c12aa.exe	27
PID 2976 wrote to memory of 2232	2976	56392089cbf8187636317ab83a2c12aa.exe	27
PID 2976 wrote to memory of 2232	2976	56392089cbf8187636317ab83a2c12aa.exe	27
PID 2976 wrote to memory of 2232	2976	56392089cbf8187636317ab83a2c12aa.exe	27
PID 2976 wrote to memory of 2824	2976	56392089cbf8187636317ab83a2c12aa.exe	29
PID 2976 wrote to memory of 2824	2976	56392089cbf8187636317ab83a2c12aa.exe	29
PID 2976 wrote to memory of 2824	2976	56392089cbf8187636317ab83a2c12aa.exe	29
PID 2976 wrote to memory of 2824	2976	56392089cbf8187636317ab83a2c12aa.exe	29
PID 2976 wrote to memory of 2780	2976	56392089cbf8187636317ab83a2c12aa.exe	31
PID 2976 wrote to memory of 2780	2976	56392089cbf8187636317ab83a2c12aa.exe	31
PID 2976 wrote to memory of 2780	2976	56392089cbf8187636317ab83a2c12aa.exe	31
PID 2976 wrote to memory of 2780	2976	56392089cbf8187636317ab83a2c12aa.exe	31

C:\Users\Admin\AppData\Local\Temp\56392089cbf8187636317ab83a2c12aa.exe
"C:\Users\Admin\AppData\Local\Temp\56392089cbf8187636317ab83a2c12aa.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2976
- C:\Windows\SysWOW64\cmd.exe
  cmd /c copy "C:\Users\Admin\AppData\Local\Temp\56392089cbf8187636317ab83a2c12aa.exe" "C:\Windows\csrss.exe"
  2⤵
  - Drops file in Windows directory
  PID:2232
- C:\Windows\csrss.exe
  C:\Windows\csrss.exe
  2⤵
  - Modifies WinLogon for persistence
  - Executes dropped EXE
  PID:2824
- C:\Windows\SysWOW64\cmd.exe
  cmd /c delme.bat
  2⤵
  - Deletes itself
  PID:2780

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Winlogon Helper DLL

1

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Winlogon Helper DLL

1

T1547.004

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\delme.bat

Filesize
193B

MD5
6725fd93b31835314e18db0a923086e8

SHA1
bfcd0336a837d11cd6498a55d8dba9c7101ccdf4

SHA256
c3982255b179846faa9b1ab0d186c9eea0594a61edb5618c6641531ecf88fe4c

SHA512
c262af8ed1dae0139afff2fc276b974aeb1f429bf1a454d66af8a2ed2f06a0cae1ef5ea50ccb5e42dc93c182cc2718223378045a703befe96092a2fe2ffbe744

Download Submit
C:\Windows\csrss.exe

Filesize
15KB

MD5
56392089cbf8187636317ab83a2c12aa

SHA1
29dde0eba73888ebdb049278829862be70d2dc1e

SHA256
d3c5dfc940753fc819ace0c55216442a7cb090fec27e856071da176efdbc87c0

SHA512
fb6e9b85d4067d109cec37546c545e1dbac29d528912b2189b368e663fd4ad66b2f5dc34e117ef53cfc3674e8bcae8a1e4a4282ced9664f261b5ac967793472b

Download Submit
memory/2824-18-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2824-19-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2824-14-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2824-15-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2824-16-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2824-17-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2824-26-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2824-13-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2824-20-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2824-21-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2824-22-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2824-23-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2824-24-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2824-25-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2976-11-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads