97e81e45711c335a2ba695b3afe273921d499f626702b0f16c218ae58167bf04

Analysis

max time kernel
151s
max time network
161s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
06-12-2022 23:16

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General

Target

97e81e45711c335a2ba695b3afe273921d499f626702b0f16c218ae58167bf04.exe
Size

237KB
MD5

f0dc30ae410946b315450251cd2d84ac
SHA1

a868661ffbf5501903fcf11115a7823c86d33e5a
SHA256

97e81e45711c335a2ba695b3afe273921d499f626702b0f16c218ae58167bf04
SHA512

121c2ee0f51fba13a2d60a35a48cd873e9f4173f3454cccaaf64c72bb875027f2c61123f86c3d03cf33a40e11c18242ead49144fa3636f1f013886944d41d512
SSDEEP

6144:z8MOB7AD3zNtQL7z1DCf4b1m6TstOriVgjXre7r+2zxwuLgUfDqASMzy0E4LSjbv:z8MOB7AD3zNtQL7z1DCf4b1m6TstOrio

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,"	97e81e45711c335a2ba695b3afe273921d499f626702b0f16c218ae58167bf04.exe

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4852-134-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4852-138-0x0000000000400000-0x000000000040B000-memory.dmp	upx

Drops file in System32 directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\twext.exe	97e81e45711c335a2ba695b3afe273921d499f626702b0f16c218ae58167bf04.exe
File created	C:\Windows\SysWOW64\twext.exe	97e81e45711c335a2ba695b3afe273921d499f626702b0f16c218ae58167bf04.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4852 set thread context of 2412	4852	97e81e45711c335a2ba695b3afe273921d499f626702b0f16c218ae58167bf04.exe	80

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2412	97e81e45711c335a2ba695b3afe273921d499f626702b0f16c218ae58167bf04.exe
2412	97e81e45711c335a2ba695b3afe273921d499f626702b0f16c218ae58167bf04.exe
2412	97e81e45711c335a2ba695b3afe273921d499f626702b0f16c218ae58167bf04.exe
2412	97e81e45711c335a2ba695b3afe273921d499f626702b0f16c218ae58167bf04.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2412	97e81e45711c335a2ba695b3afe273921d499f626702b0f16c218ae58167bf04.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4852	97e81e45711c335a2ba695b3afe273921d499f626702b0f16c218ae58167bf04.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 4852 wrote to memory of 2412	4852	97e81e45711c335a2ba695b3afe273921d499f626702b0f16c218ae58167bf04.exe	80
PID 4852 wrote to memory of 2412	4852	97e81e45711c335a2ba695b3afe273921d499f626702b0f16c218ae58167bf04.exe	80
PID 4852 wrote to memory of 2412	4852	97e81e45711c335a2ba695b3afe273921d499f626702b0f16c218ae58167bf04.exe	80
PID 4852 wrote to memory of 2412	4852	97e81e45711c335a2ba695b3afe273921d499f626702b0f16c218ae58167bf04.exe	80
PID 4852 wrote to memory of 2412	4852	97e81e45711c335a2ba695b3afe273921d499f626702b0f16c218ae58167bf04.exe	80
PID 4852 wrote to memory of 2412	4852	97e81e45711c335a2ba695b3afe273921d499f626702b0f16c218ae58167bf04.exe	80
PID 4852 wrote to memory of 2412	4852	97e81e45711c335a2ba695b3afe273921d499f626702b0f16c218ae58167bf04.exe	80
PID 4852 wrote to memory of 2412	4852	97e81e45711c335a2ba695b3afe273921d499f626702b0f16c218ae58167bf04.exe	80
PID 4852 wrote to memory of 2412	4852	97e81e45711c335a2ba695b3afe273921d499f626702b0f16c218ae58167bf04.exe	80
PID 2412 wrote to memory of 584	2412	97e81e45711c335a2ba695b3afe273921d499f626702b0f16c218ae58167bf04.exe	6
PID 2412 wrote to memory of 584	2412	97e81e45711c335a2ba695b3afe273921d499f626702b0f16c218ae58167bf04.exe	6
PID 2412 wrote to memory of 584	2412	97e81e45711c335a2ba695b3afe273921d499f626702b0f16c218ae58167bf04.exe	6
PID 2412 wrote to memory of 584	2412	97e81e45711c335a2ba695b3afe273921d499f626702b0f16c218ae58167bf04.exe	6
PID 2412 wrote to memory of 584	2412	97e81e45711c335a2ba695b3afe273921d499f626702b0f16c218ae58167bf04.exe	6
PID 2412 wrote to memory of 584	2412	97e81e45711c335a2ba695b3afe273921d499f626702b0f16c218ae58167bf04.exe	6
PID 2412 wrote to memory of 584	2412	97e81e45711c335a2ba695b3afe273921d499f626702b0f16c218ae58167bf04.exe	6
PID 2412 wrote to memory of 584	2412	97e81e45711c335a2ba695b3afe273921d499f626702b0f16c218ae58167bf04.exe	6
PID 2412 wrote to memory of 584	2412	97e81e45711c335a2ba695b3afe273921d499f626702b0f16c218ae58167bf04.exe	6
PID 2412 wrote to memory of 584	2412	97e81e45711c335a2ba695b3afe273921d499f626702b0f16c218ae58167bf04.exe	6
PID 2412 wrote to memory of 584	2412	97e81e45711c335a2ba695b3afe273921d499f626702b0f16c218ae58167bf04.exe	6
PID 2412 wrote to memory of 584	2412	97e81e45711c335a2ba695b3afe273921d499f626702b0f16c218ae58167bf04.exe	6
PID 2412 wrote to memory of 584	2412	97e81e45711c335a2ba695b3afe273921d499f626702b0f16c218ae58167bf04.exe	6
PID 2412 wrote to memory of 584	2412	97e81e45711c335a2ba695b3afe273921d499f626702b0f16c218ae58167bf04.exe	6
PID 2412 wrote to memory of 584	2412	97e81e45711c335a2ba695b3afe273921d499f626702b0f16c218ae58167bf04.exe	6
PID 2412 wrote to memory of 584	2412	97e81e45711c335a2ba695b3afe273921d499f626702b0f16c218ae58167bf04.exe	6
PID 2412 wrote to memory of 584	2412	97e81e45711c335a2ba695b3afe273921d499f626702b0f16c218ae58167bf04.exe	6
PID 2412 wrote to memory of 584	2412	97e81e45711c335a2ba695b3afe273921d499f626702b0f16c218ae58167bf04.exe	6
PID 2412 wrote to memory of 584	2412	97e81e45711c335a2ba695b3afe273921d499f626702b0f16c218ae58167bf04.exe	6
PID 2412 wrote to memory of 584	2412	97e81e45711c335a2ba695b3afe273921d499f626702b0f16c218ae58167bf04.exe	6
PID 2412 wrote to memory of 584	2412	97e81e45711c335a2ba695b3afe273921d499f626702b0f16c218ae58167bf04.exe	6
PID 2412 wrote to memory of 584	2412	97e81e45711c335a2ba695b3afe273921d499f626702b0f16c218ae58167bf04.exe	6
PID 2412 wrote to memory of 584	2412	97e81e45711c335a2ba695b3afe273921d499f626702b0f16c218ae58167bf04.exe	6
PID 2412 wrote to memory of 584	2412	97e81e45711c335a2ba695b3afe273921d499f626702b0f16c218ae58167bf04.exe	6
PID 2412 wrote to memory of 584	2412	97e81e45711c335a2ba695b3afe273921d499f626702b0f16c218ae58167bf04.exe	6
PID 2412 wrote to memory of 584	2412	97e81e45711c335a2ba695b3afe273921d499f626702b0f16c218ae58167bf04.exe	6
PID 2412 wrote to memory of 584	2412	97e81e45711c335a2ba695b3afe273921d499f626702b0f16c218ae58167bf04.exe	6
PID 2412 wrote to memory of 584	2412	97e81e45711c335a2ba695b3afe273921d499f626702b0f16c218ae58167bf04.exe	6
PID 2412 wrote to memory of 584	2412	97e81e45711c335a2ba695b3afe273921d499f626702b0f16c218ae58167bf04.exe	6
PID 2412 wrote to memory of 584	2412	97e81e45711c335a2ba695b3afe273921d499f626702b0f16c218ae58167bf04.exe	6
PID 2412 wrote to memory of 584	2412	97e81e45711c335a2ba695b3afe273921d499f626702b0f16c218ae58167bf04.exe	6
PID 2412 wrote to memory of 584	2412	97e81e45711c335a2ba695b3afe273921d499f626702b0f16c218ae58167bf04.exe	6
PID 2412 wrote to memory of 584	2412	97e81e45711c335a2ba695b3afe273921d499f626702b0f16c218ae58167bf04.exe	6
PID 2412 wrote to memory of 584	2412	97e81e45711c335a2ba695b3afe273921d499f626702b0f16c218ae58167bf04.exe	6
PID 2412 wrote to memory of 584	2412	97e81e45711c335a2ba695b3afe273921d499f626702b0f16c218ae58167bf04.exe	6
PID 2412 wrote to memory of 584	2412	97e81e45711c335a2ba695b3afe273921d499f626702b0f16c218ae58167bf04.exe	6
PID 2412 wrote to memory of 584	2412	97e81e45711c335a2ba695b3afe273921d499f626702b0f16c218ae58167bf04.exe	6
PID 2412 wrote to memory of 584	2412	97e81e45711c335a2ba695b3afe273921d499f626702b0f16c218ae58167bf04.exe	6
PID 2412 wrote to memory of 584	2412	97e81e45711c335a2ba695b3afe273921d499f626702b0f16c218ae58167bf04.exe	6
PID 2412 wrote to memory of 584	2412	97e81e45711c335a2ba695b3afe273921d499f626702b0f16c218ae58167bf04.exe	6
PID 2412 wrote to memory of 584	2412	97e81e45711c335a2ba695b3afe273921d499f626702b0f16c218ae58167bf04.exe	6
PID 2412 wrote to memory of 584	2412	97e81e45711c335a2ba695b3afe273921d499f626702b0f16c218ae58167bf04.exe	6
PID 2412 wrote to memory of 584	2412	97e81e45711c335a2ba695b3afe273921d499f626702b0f16c218ae58167bf04.exe	6
PID 2412 wrote to memory of 584	2412	97e81e45711c335a2ba695b3afe273921d499f626702b0f16c218ae58167bf04.exe	6
PID 2412 wrote to memory of 584	2412	97e81e45711c335a2ba695b3afe273921d499f626702b0f16c218ae58167bf04.exe	6
PID 2412 wrote to memory of 584	2412	97e81e45711c335a2ba695b3afe273921d499f626702b0f16c218ae58167bf04.exe	6
PID 2412 wrote to memory of 584	2412	97e81e45711c335a2ba695b3afe273921d499f626702b0f16c218ae58167bf04.exe	6
PID 2412 wrote to memory of 584	2412	97e81e45711c335a2ba695b3afe273921d499f626702b0f16c218ae58167bf04.exe	6
PID 2412 wrote to memory of 584	2412	97e81e45711c335a2ba695b3afe273921d499f626702b0f16c218ae58167bf04.exe	6
PID 2412 wrote to memory of 584	2412	97e81e45711c335a2ba695b3afe273921d499f626702b0f16c218ae58167bf04.exe	6
PID 2412 wrote to memory of 584	2412	97e81e45711c335a2ba695b3afe273921d499f626702b0f16c218ae58167bf04.exe	6
PID 2412 wrote to memory of 584	2412	97e81e45711c335a2ba695b3afe273921d499f626702b0f16c218ae58167bf04.exe	6
PID 2412 wrote to memory of 584	2412	97e81e45711c335a2ba695b3afe273921d499f626702b0f16c218ae58167bf04.exe	6
PID 2412 wrote to memory of 584	2412	97e81e45711c335a2ba695b3afe273921d499f626702b0f16c218ae58167bf04.exe	6
PID 2412 wrote to memory of 584	2412	97e81e45711c335a2ba695b3afe273921d499f626702b0f16c218ae58167bf04.exe	6

C:\Windows\system32\winlogon.exe
winlogon.exe
1⤵
PID:584

C:\Users\Admin\AppData\Local\Temp\97e81e45711c335a2ba695b3afe273921d499f626702b0f16c218ae58167bf04.exe
"C:\Users\Admin\AppData\Local\Temp\97e81e45711c335a2ba695b3afe273921d499f626702b0f16c218ae58167bf04.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4852
- C:\Users\Admin\AppData\Local\Temp\97e81e45711c335a2ba695b3afe273921d499f626702b0f16c218ae58167bf04.exe
  "C:\Users\Admin\AppData\Local\Temp\97e81e45711c335a2ba695b3afe273921d499f626702b0f16c218ae58167bf04.exe"
  2⤵
  - Modifies WinLogon for persistence
  - Drops file in System32 directory
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2412

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/584-205-0x000000002CAA0000-0x000000002CAC6000-memory.dmp

Filesize
152KB

Download
memory/584-215-0x000000002CB00000-0x000000002CB26000-memory.dmp

Filesize
152KB

Download
memory/584-170-0x000000002C950000-0x000000002C976000-memory.dmp

Filesize
152KB

Download
memory/584-240-0x000000002CBF0000-0x000000002CC16000-memory.dmp

Filesize
152KB

Download
memory/584-175-0x000000002C980000-0x000000002C9A6000-memory.dmp

Filesize
152KB

Download
memory/584-235-0x000000002CBC0000-0x000000002CBE6000-memory.dmp

Filesize
152KB

Download
memory/584-230-0x000000002CB90000-0x000000002CBB6000-memory.dmp

Filesize
152KB

Download
memory/584-225-0x000000002CB60000-0x000000002CB86000-memory.dmp

Filesize
152KB

Download
memory/584-220-0x000000002CB30000-0x000000002CB56000-memory.dmp

Filesize
152KB

Download
memory/584-195-0x000000002CA40000-0x000000002CA66000-memory.dmp

Filesize
152KB

Download
memory/584-150-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/584-180-0x000000002C9B0000-0x000000002C9D6000-memory.dmp

Filesize
152KB

Download
memory/584-160-0x000000002C8F0000-0x000000002C916000-memory.dmp

Filesize
152KB

Download
memory/584-165-0x000000002C920000-0x000000002C946000-memory.dmp

Filesize
152KB

Download
memory/584-210-0x000000002CAD0000-0x000000002CAF6000-memory.dmp

Filesize
152KB

Download
memory/584-200-0x000000002CA70000-0x000000002CA96000-memory.dmp

Filesize
152KB

Download
memory/584-155-0x000000002C8C0000-0x000000002C8E6000-memory.dmp

Filesize
152KB

Download
memory/584-185-0x000000002C9E0000-0x000000002CA06000-memory.dmp

Filesize
152KB

Download
memory/584-190-0x000000002CA10000-0x000000002CA36000-memory.dmp

Filesize
152KB

Download
memory/2412-144-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2412-139-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2412-136-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2412-145-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2412-140-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2412-142-0x0000000000410000-0x0000000000412000-memory.dmp

Filesize
8KB

Download
memory/2412-141-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/4852-134-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4852-138-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download