85aadf758fc7c85bd8e2a00307d1c416dc6fb42af2f92743d69f1b28b64be0f2

Analysis

max time kernel
155s
max time network
162s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
02-12-2022 23:48

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General

Target

85aadf758fc7c85bd8e2a00307d1c416dc6fb42af2f92743d69f1b28b64be0f2.exe
Size

551KB
MD5

1d780d388626a0ceb81cbaeea62735f4
SHA1

bca9bc959337582137ff4ca22d598e5206dca10a
SHA256

85aadf758fc7c85bd8e2a00307d1c416dc6fb42af2f92743d69f1b28b64be0f2
SHA512

c4d48e66edd218bc6326a4251858236ca3371749bc691d667049e672008ba4c4bd8439c96d018d4b88328dbfd87a7722530cf99744a3f0617b9b19d78c3094c6
SSDEEP

6144:7NSMzXmbO1OO80Vxn1p4Cs0sxefKVR2HAmQolIqXpIe+3okSh8W9OonGX03fATiK:sQXJjvdpHzsxefi2gIb+3LonGkv4nKi7

Score

10^/10

persistence upx

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\userinit = "C:\\Windows\\system32\\twext.exe,"	85aadf758fc7c85bd8e2a00307d1c416dc6fb42af2f92743d69f1b28b64be0f2.exe

UPX packed file 2 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/484-135-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/484-139-0x0000000000400000-0x000000000040B000-memory.dmp	upx

Drops file in System32 directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\twext.exe	85aadf758fc7c85bd8e2a00307d1c416dc6fb42af2f92743d69f1b28b64be0f2.exe
File created	C:\Windows\SysWOW64\twext.exe	85aadf758fc7c85bd8e2a00307d1c416dc6fb42af2f92743d69f1b28b64be0f2.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 484 set thread context of 2692	484	85aadf758fc7c85bd8e2a00307d1c416dc6fb42af2f92743d69f1b28b64be0f2.exe	82

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2692	85aadf758fc7c85bd8e2a00307d1c416dc6fb42af2f92743d69f1b28b64be0f2.exe
2692	85aadf758fc7c85bd8e2a00307d1c416dc6fb42af2f92743d69f1b28b64be0f2.exe
2692	85aadf758fc7c85bd8e2a00307d1c416dc6fb42af2f92743d69f1b28b64be0f2.exe
2692	85aadf758fc7c85bd8e2a00307d1c416dc6fb42af2f92743d69f1b28b64be0f2.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2692	85aadf758fc7c85bd8e2a00307d1c416dc6fb42af2f92743d69f1b28b64be0f2.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
484	85aadf758fc7c85bd8e2a00307d1c416dc6fb42af2f92743d69f1b28b64be0f2.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 484 wrote to memory of 2692	484	85aadf758fc7c85bd8e2a00307d1c416dc6fb42af2f92743d69f1b28b64be0f2.exe	82
PID 484 wrote to memory of 2692	484	85aadf758fc7c85bd8e2a00307d1c416dc6fb42af2f92743d69f1b28b64be0f2.exe	82
PID 484 wrote to memory of 2692	484	85aadf758fc7c85bd8e2a00307d1c416dc6fb42af2f92743d69f1b28b64be0f2.exe	82
PID 484 wrote to memory of 2692	484	85aadf758fc7c85bd8e2a00307d1c416dc6fb42af2f92743d69f1b28b64be0f2.exe	82
PID 484 wrote to memory of 2692	484	85aadf758fc7c85bd8e2a00307d1c416dc6fb42af2f92743d69f1b28b64be0f2.exe	82
PID 484 wrote to memory of 2692	484	85aadf758fc7c85bd8e2a00307d1c416dc6fb42af2f92743d69f1b28b64be0f2.exe	82
PID 484 wrote to memory of 2692	484	85aadf758fc7c85bd8e2a00307d1c416dc6fb42af2f92743d69f1b28b64be0f2.exe	82
PID 484 wrote to memory of 2692	484	85aadf758fc7c85bd8e2a00307d1c416dc6fb42af2f92743d69f1b28b64be0f2.exe	82
PID 484 wrote to memory of 2692	484	85aadf758fc7c85bd8e2a00307d1c416dc6fb42af2f92743d69f1b28b64be0f2.exe	82
PID 2692 wrote to memory of 616	2692	85aadf758fc7c85bd8e2a00307d1c416dc6fb42af2f92743d69f1b28b64be0f2.exe	76
PID 2692 wrote to memory of 616	2692	85aadf758fc7c85bd8e2a00307d1c416dc6fb42af2f92743d69f1b28b64be0f2.exe	76
PID 2692 wrote to memory of 616	2692	85aadf758fc7c85bd8e2a00307d1c416dc6fb42af2f92743d69f1b28b64be0f2.exe	76
PID 2692 wrote to memory of 616	2692	85aadf758fc7c85bd8e2a00307d1c416dc6fb42af2f92743d69f1b28b64be0f2.exe	76
PID 2692 wrote to memory of 616	2692	85aadf758fc7c85bd8e2a00307d1c416dc6fb42af2f92743d69f1b28b64be0f2.exe	76
PID 2692 wrote to memory of 616	2692	85aadf758fc7c85bd8e2a00307d1c416dc6fb42af2f92743d69f1b28b64be0f2.exe	76
PID 2692 wrote to memory of 616	2692	85aadf758fc7c85bd8e2a00307d1c416dc6fb42af2f92743d69f1b28b64be0f2.exe	76
PID 2692 wrote to memory of 616	2692	85aadf758fc7c85bd8e2a00307d1c416dc6fb42af2f92743d69f1b28b64be0f2.exe	76
PID 2692 wrote to memory of 616	2692	85aadf758fc7c85bd8e2a00307d1c416dc6fb42af2f92743d69f1b28b64be0f2.exe	76
PID 2692 wrote to memory of 616	2692	85aadf758fc7c85bd8e2a00307d1c416dc6fb42af2f92743d69f1b28b64be0f2.exe	76
PID 2692 wrote to memory of 616	2692	85aadf758fc7c85bd8e2a00307d1c416dc6fb42af2f92743d69f1b28b64be0f2.exe	76
PID 2692 wrote to memory of 616	2692	85aadf758fc7c85bd8e2a00307d1c416dc6fb42af2f92743d69f1b28b64be0f2.exe	76
PID 2692 wrote to memory of 616	2692	85aadf758fc7c85bd8e2a00307d1c416dc6fb42af2f92743d69f1b28b64be0f2.exe	76
PID 2692 wrote to memory of 616	2692	85aadf758fc7c85bd8e2a00307d1c416dc6fb42af2f92743d69f1b28b64be0f2.exe	76
PID 2692 wrote to memory of 616	2692	85aadf758fc7c85bd8e2a00307d1c416dc6fb42af2f92743d69f1b28b64be0f2.exe	76
PID 2692 wrote to memory of 616	2692	85aadf758fc7c85bd8e2a00307d1c416dc6fb42af2f92743d69f1b28b64be0f2.exe	76
PID 2692 wrote to memory of 616	2692	85aadf758fc7c85bd8e2a00307d1c416dc6fb42af2f92743d69f1b28b64be0f2.exe	76
PID 2692 wrote to memory of 616	2692	85aadf758fc7c85bd8e2a00307d1c416dc6fb42af2f92743d69f1b28b64be0f2.exe	76
PID 2692 wrote to memory of 616	2692	85aadf758fc7c85bd8e2a00307d1c416dc6fb42af2f92743d69f1b28b64be0f2.exe	76
PID 2692 wrote to memory of 616	2692	85aadf758fc7c85bd8e2a00307d1c416dc6fb42af2f92743d69f1b28b64be0f2.exe	76
PID 2692 wrote to memory of 616	2692	85aadf758fc7c85bd8e2a00307d1c416dc6fb42af2f92743d69f1b28b64be0f2.exe	76
PID 2692 wrote to memory of 616	2692	85aadf758fc7c85bd8e2a00307d1c416dc6fb42af2f92743d69f1b28b64be0f2.exe	76
PID 2692 wrote to memory of 616	2692	85aadf758fc7c85bd8e2a00307d1c416dc6fb42af2f92743d69f1b28b64be0f2.exe	76
PID 2692 wrote to memory of 616	2692	85aadf758fc7c85bd8e2a00307d1c416dc6fb42af2f92743d69f1b28b64be0f2.exe	76
PID 2692 wrote to memory of 616	2692	85aadf758fc7c85bd8e2a00307d1c416dc6fb42af2f92743d69f1b28b64be0f2.exe	76
PID 2692 wrote to memory of 616	2692	85aadf758fc7c85bd8e2a00307d1c416dc6fb42af2f92743d69f1b28b64be0f2.exe	76
PID 2692 wrote to memory of 616	2692	85aadf758fc7c85bd8e2a00307d1c416dc6fb42af2f92743d69f1b28b64be0f2.exe	76
PID 2692 wrote to memory of 616	2692	85aadf758fc7c85bd8e2a00307d1c416dc6fb42af2f92743d69f1b28b64be0f2.exe	76
PID 2692 wrote to memory of 616	2692	85aadf758fc7c85bd8e2a00307d1c416dc6fb42af2f92743d69f1b28b64be0f2.exe	76
PID 2692 wrote to memory of 616	2692	85aadf758fc7c85bd8e2a00307d1c416dc6fb42af2f92743d69f1b28b64be0f2.exe	76
PID 2692 wrote to memory of 616	2692	85aadf758fc7c85bd8e2a00307d1c416dc6fb42af2f92743d69f1b28b64be0f2.exe	76
PID 2692 wrote to memory of 616	2692	85aadf758fc7c85bd8e2a00307d1c416dc6fb42af2f92743d69f1b28b64be0f2.exe	76
PID 2692 wrote to memory of 616	2692	85aadf758fc7c85bd8e2a00307d1c416dc6fb42af2f92743d69f1b28b64be0f2.exe	76
PID 2692 wrote to memory of 616	2692	85aadf758fc7c85bd8e2a00307d1c416dc6fb42af2f92743d69f1b28b64be0f2.exe	76
PID 2692 wrote to memory of 616	2692	85aadf758fc7c85bd8e2a00307d1c416dc6fb42af2f92743d69f1b28b64be0f2.exe	76
PID 2692 wrote to memory of 616	2692	85aadf758fc7c85bd8e2a00307d1c416dc6fb42af2f92743d69f1b28b64be0f2.exe	76
PID 2692 wrote to memory of 616	2692	85aadf758fc7c85bd8e2a00307d1c416dc6fb42af2f92743d69f1b28b64be0f2.exe	76
PID 2692 wrote to memory of 616	2692	85aadf758fc7c85bd8e2a00307d1c416dc6fb42af2f92743d69f1b28b64be0f2.exe	76
PID 2692 wrote to memory of 616	2692	85aadf758fc7c85bd8e2a00307d1c416dc6fb42af2f92743d69f1b28b64be0f2.exe	76
PID 2692 wrote to memory of 616	2692	85aadf758fc7c85bd8e2a00307d1c416dc6fb42af2f92743d69f1b28b64be0f2.exe	76
PID 2692 wrote to memory of 616	2692	85aadf758fc7c85bd8e2a00307d1c416dc6fb42af2f92743d69f1b28b64be0f2.exe	76
PID 2692 wrote to memory of 616	2692	85aadf758fc7c85bd8e2a00307d1c416dc6fb42af2f92743d69f1b28b64be0f2.exe	76
PID 2692 wrote to memory of 616	2692	85aadf758fc7c85bd8e2a00307d1c416dc6fb42af2f92743d69f1b28b64be0f2.exe	76
PID 2692 wrote to memory of 616	2692	85aadf758fc7c85bd8e2a00307d1c416dc6fb42af2f92743d69f1b28b64be0f2.exe	76
PID 2692 wrote to memory of 616	2692	85aadf758fc7c85bd8e2a00307d1c416dc6fb42af2f92743d69f1b28b64be0f2.exe	76
PID 2692 wrote to memory of 616	2692	85aadf758fc7c85bd8e2a00307d1c416dc6fb42af2f92743d69f1b28b64be0f2.exe	76
PID 2692 wrote to memory of 616	2692	85aadf758fc7c85bd8e2a00307d1c416dc6fb42af2f92743d69f1b28b64be0f2.exe	76
PID 2692 wrote to memory of 616	2692	85aadf758fc7c85bd8e2a00307d1c416dc6fb42af2f92743d69f1b28b64be0f2.exe	76
PID 2692 wrote to memory of 616	2692	85aadf758fc7c85bd8e2a00307d1c416dc6fb42af2f92743d69f1b28b64be0f2.exe	76
PID 2692 wrote to memory of 616	2692	85aadf758fc7c85bd8e2a00307d1c416dc6fb42af2f92743d69f1b28b64be0f2.exe	76
PID 2692 wrote to memory of 616	2692	85aadf758fc7c85bd8e2a00307d1c416dc6fb42af2f92743d69f1b28b64be0f2.exe	76
PID 2692 wrote to memory of 616	2692	85aadf758fc7c85bd8e2a00307d1c416dc6fb42af2f92743d69f1b28b64be0f2.exe	76
PID 2692 wrote to memory of 616	2692	85aadf758fc7c85bd8e2a00307d1c416dc6fb42af2f92743d69f1b28b64be0f2.exe	76
PID 2692 wrote to memory of 616	2692	85aadf758fc7c85bd8e2a00307d1c416dc6fb42af2f92743d69f1b28b64be0f2.exe	76
PID 2692 wrote to memory of 616	2692	85aadf758fc7c85bd8e2a00307d1c416dc6fb42af2f92743d69f1b28b64be0f2.exe	76

C:\Windows\system32\winlogon.exe
winlogon.exe
1⤵
PID:616

C:\Users\Admin\AppData\Local\Temp\85aadf758fc7c85bd8e2a00307d1c416dc6fb42af2f92743d69f1b28b64be0f2.exe
"C:\Users\Admin\AppData\Local\Temp\85aadf758fc7c85bd8e2a00307d1c416dc6fb42af2f92743d69f1b28b64be0f2.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:484
- C:\Users\Admin\AppData\Local\Temp\85aadf758fc7c85bd8e2a00307d1c416dc6fb42af2f92743d69f1b28b64be0f2.exe
  "C:\Users\Admin\AppData\Local\Temp\85aadf758fc7c85bd8e2a00307d1c416dc6fb42af2f92743d69f1b28b64be0f2.exe"
  2⤵
  - Modifies WinLogon for persistence
  - Drops file in System32 directory
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2692

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

Loading Replay Monitor...

Downloads

memory/484-139-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/484-135-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/616-200-0x0000000004DF0000-0x0000000004E16000-memory.dmp

Filesize
152KB

Download
memory/616-215-0x0000000004E80000-0x0000000004EA6000-memory.dmp

Filesize
152KB

Download
memory/616-180-0x0000000004D30000-0x0000000004D56000-memory.dmp

Filesize
152KB

Download
memory/616-240-0x0000000004F70000-0x0000000004F96000-memory.dmp

Filesize
152KB

Download
memory/616-185-0x0000000004D60000-0x0000000004D86000-memory.dmp

Filesize
152KB

Download
memory/616-235-0x0000000004F40000-0x0000000004F66000-memory.dmp

Filesize
152KB

Download
memory/616-230-0x0000000004F10000-0x0000000004F36000-memory.dmp

Filesize
152KB

Download
memory/616-190-0x0000000004D90000-0x0000000004DB6000-memory.dmp

Filesize
152KB

Download
memory/616-160-0x0000000004C70000-0x0000000004C96000-memory.dmp

Filesize
152KB

Download
memory/616-165-0x0000000004CA0000-0x0000000004CC6000-memory.dmp

Filesize
152KB

Download
memory/616-170-0x0000000004CD0000-0x0000000004CF6000-memory.dmp

Filesize
152KB

Download
memory/616-175-0x0000000004D00000-0x0000000004D26000-memory.dmp

Filesize
152KB

Download
memory/616-225-0x0000000004EE0000-0x0000000004F06000-memory.dmp

Filesize
152KB

Download
memory/616-220-0x0000000004EB0000-0x0000000004ED6000-memory.dmp

Filesize
152KB

Download
memory/616-155-0x0000000004C40000-0x0000000004C66000-memory.dmp

Filesize
152KB

Download
memory/616-195-0x0000000004DC0000-0x0000000004DE6000-memory.dmp

Filesize
152KB

Download
memory/616-210-0x0000000004E50000-0x0000000004E76000-memory.dmp

Filesize
152KB

Download
memory/616-205-0x0000000004E20000-0x0000000004E46000-memory.dmp

Filesize
152KB

Download
memory/2692-137-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2692-143-0x0000000000410000-0x0000000000412000-memory.dmp

Filesize
8KB

Download
memory/2692-140-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2692-145-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2692-141-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2692-142-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download