236fc6fc6834b364f3bb127bb19fedf9e8c2ab38ad1012fdf7a68c8366cd9580

Analysis

max time kernel
150s
max time network
157s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
30-12-2023 22:55

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General

Target

1f1fdf28cd3f106a35a7e57b56fc5d44.exe
Size

65KB
MD5

1f1fdf28cd3f106a35a7e57b56fc5d44
SHA1

029402845cca42b7f942dd64cea3f2187495b5dd
SHA256

236fc6fc6834b364f3bb127bb19fedf9e8c2ab38ad1012fdf7a68c8366cd9580
SHA512

389f41606ddc05890937ddeebbde6cf1d01bdabfab8c01d5dfdfa00e434f0365b0bb9345c2e29fbed62ef5577372e9f9cf282440bd0b7566816d240c12db809e
SSDEEP

1536:fjK95XrdtBi+w+RDlsQDJv/HOw9aR8i1Rg:fA5XrViUPsQBHON6i1Rg

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\userinit = "C:\\Windows\\system32\\twex.exe,"	1f1fdf28cd3f106a35a7e57b56fc5d44.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\twex.exe	1f1fdf28cd3f106a35a7e57b56fc5d44.exe
File created	C:\Windows\SysWOW64\twex.exe	1f1fdf28cd3f106a35a7e57b56fc5d44.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1508	1f1fdf28cd3f106a35a7e57b56fc5d44.exe
1508	1f1fdf28cd3f106a35a7e57b56fc5d44.exe
1508	1f1fdf28cd3f106a35a7e57b56fc5d44.exe
1508	1f1fdf28cd3f106a35a7e57b56fc5d44.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1508	1f1fdf28cd3f106a35a7e57b56fc5d44.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 1508 wrote to memory of 584	1508	1f1fdf28cd3f106a35a7e57b56fc5d44.exe	86
PID 1508 wrote to memory of 584	1508	1f1fdf28cd3f106a35a7e57b56fc5d44.exe	86
PID 1508 wrote to memory of 584	1508	1f1fdf28cd3f106a35a7e57b56fc5d44.exe	86
PID 1508 wrote to memory of 584	1508	1f1fdf28cd3f106a35a7e57b56fc5d44.exe	86
PID 1508 wrote to memory of 584	1508	1f1fdf28cd3f106a35a7e57b56fc5d44.exe	86
PID 1508 wrote to memory of 584	1508	1f1fdf28cd3f106a35a7e57b56fc5d44.exe	86
PID 1508 wrote to memory of 584	1508	1f1fdf28cd3f106a35a7e57b56fc5d44.exe	86
PID 1508 wrote to memory of 584	1508	1f1fdf28cd3f106a35a7e57b56fc5d44.exe	86
PID 1508 wrote to memory of 584	1508	1f1fdf28cd3f106a35a7e57b56fc5d44.exe	86
PID 1508 wrote to memory of 584	1508	1f1fdf28cd3f106a35a7e57b56fc5d44.exe	86
PID 1508 wrote to memory of 584	1508	1f1fdf28cd3f106a35a7e57b56fc5d44.exe	86
PID 1508 wrote to memory of 584	1508	1f1fdf28cd3f106a35a7e57b56fc5d44.exe	86
PID 1508 wrote to memory of 584	1508	1f1fdf28cd3f106a35a7e57b56fc5d44.exe	86
PID 1508 wrote to memory of 584	1508	1f1fdf28cd3f106a35a7e57b56fc5d44.exe	86
PID 1508 wrote to memory of 584	1508	1f1fdf28cd3f106a35a7e57b56fc5d44.exe	86
PID 1508 wrote to memory of 584	1508	1f1fdf28cd3f106a35a7e57b56fc5d44.exe	86
PID 1508 wrote to memory of 584	1508	1f1fdf28cd3f106a35a7e57b56fc5d44.exe	86
PID 1508 wrote to memory of 584	1508	1f1fdf28cd3f106a35a7e57b56fc5d44.exe	86
PID 1508 wrote to memory of 584	1508	1f1fdf28cd3f106a35a7e57b56fc5d44.exe	86
PID 1508 wrote to memory of 584	1508	1f1fdf28cd3f106a35a7e57b56fc5d44.exe	86
PID 1508 wrote to memory of 584	1508	1f1fdf28cd3f106a35a7e57b56fc5d44.exe	86
PID 1508 wrote to memory of 584	1508	1f1fdf28cd3f106a35a7e57b56fc5d44.exe	86
PID 1508 wrote to memory of 584	1508	1f1fdf28cd3f106a35a7e57b56fc5d44.exe	86
PID 1508 wrote to memory of 584	1508	1f1fdf28cd3f106a35a7e57b56fc5d44.exe	86
PID 1508 wrote to memory of 584	1508	1f1fdf28cd3f106a35a7e57b56fc5d44.exe	86
PID 1508 wrote to memory of 584	1508	1f1fdf28cd3f106a35a7e57b56fc5d44.exe	86
PID 1508 wrote to memory of 584	1508	1f1fdf28cd3f106a35a7e57b56fc5d44.exe	86
PID 1508 wrote to memory of 584	1508	1f1fdf28cd3f106a35a7e57b56fc5d44.exe	86
PID 1508 wrote to memory of 584	1508	1f1fdf28cd3f106a35a7e57b56fc5d44.exe	86
PID 1508 wrote to memory of 584	1508	1f1fdf28cd3f106a35a7e57b56fc5d44.exe	86
PID 1508 wrote to memory of 584	1508	1f1fdf28cd3f106a35a7e57b56fc5d44.exe	86
PID 1508 wrote to memory of 584	1508	1f1fdf28cd3f106a35a7e57b56fc5d44.exe	86
PID 1508 wrote to memory of 584	1508	1f1fdf28cd3f106a35a7e57b56fc5d44.exe	86
PID 1508 wrote to memory of 584	1508	1f1fdf28cd3f106a35a7e57b56fc5d44.exe	86
PID 1508 wrote to memory of 584	1508	1f1fdf28cd3f106a35a7e57b56fc5d44.exe	86
PID 1508 wrote to memory of 584	1508	1f1fdf28cd3f106a35a7e57b56fc5d44.exe	86
PID 1508 wrote to memory of 584	1508	1f1fdf28cd3f106a35a7e57b56fc5d44.exe	86
PID 1508 wrote to memory of 584	1508	1f1fdf28cd3f106a35a7e57b56fc5d44.exe	86
PID 1508 wrote to memory of 584	1508	1f1fdf28cd3f106a35a7e57b56fc5d44.exe	86
PID 1508 wrote to memory of 584	1508	1f1fdf28cd3f106a35a7e57b56fc5d44.exe	86
PID 1508 wrote to memory of 584	1508	1f1fdf28cd3f106a35a7e57b56fc5d44.exe	86
PID 1508 wrote to memory of 584	1508	1f1fdf28cd3f106a35a7e57b56fc5d44.exe	86
PID 1508 wrote to memory of 584	1508	1f1fdf28cd3f106a35a7e57b56fc5d44.exe	86
PID 1508 wrote to memory of 584	1508	1f1fdf28cd3f106a35a7e57b56fc5d44.exe	86
PID 1508 wrote to memory of 584	1508	1f1fdf28cd3f106a35a7e57b56fc5d44.exe	86
PID 1508 wrote to memory of 584	1508	1f1fdf28cd3f106a35a7e57b56fc5d44.exe	86
PID 1508 wrote to memory of 584	1508	1f1fdf28cd3f106a35a7e57b56fc5d44.exe	86
PID 1508 wrote to memory of 584	1508	1f1fdf28cd3f106a35a7e57b56fc5d44.exe	86
PID 1508 wrote to memory of 584	1508	1f1fdf28cd3f106a35a7e57b56fc5d44.exe	86
PID 1508 wrote to memory of 584	1508	1f1fdf28cd3f106a35a7e57b56fc5d44.exe	86
PID 1508 wrote to memory of 584	1508	1f1fdf28cd3f106a35a7e57b56fc5d44.exe	86
PID 1508 wrote to memory of 584	1508	1f1fdf28cd3f106a35a7e57b56fc5d44.exe	86
PID 1508 wrote to memory of 584	1508	1f1fdf28cd3f106a35a7e57b56fc5d44.exe	86
PID 1508 wrote to memory of 584	1508	1f1fdf28cd3f106a35a7e57b56fc5d44.exe	86
PID 1508 wrote to memory of 584	1508	1f1fdf28cd3f106a35a7e57b56fc5d44.exe	86
PID 1508 wrote to memory of 584	1508	1f1fdf28cd3f106a35a7e57b56fc5d44.exe	86
PID 1508 wrote to memory of 584	1508	1f1fdf28cd3f106a35a7e57b56fc5d44.exe	86
PID 1508 wrote to memory of 584	1508	1f1fdf28cd3f106a35a7e57b56fc5d44.exe	86
PID 1508 wrote to memory of 584	1508	1f1fdf28cd3f106a35a7e57b56fc5d44.exe	86
PID 1508 wrote to memory of 584	1508	1f1fdf28cd3f106a35a7e57b56fc5d44.exe	86
PID 1508 wrote to memory of 584	1508	1f1fdf28cd3f106a35a7e57b56fc5d44.exe	86
PID 1508 wrote to memory of 584	1508	1f1fdf28cd3f106a35a7e57b56fc5d44.exe	86
PID 1508 wrote to memory of 584	1508	1f1fdf28cd3f106a35a7e57b56fc5d44.exe	86
PID 1508 wrote to memory of 584	1508	1f1fdf28cd3f106a35a7e57b56fc5d44.exe	86

C:\Users\Admin\AppData\Local\Temp\1f1fdf28cd3f106a35a7e57b56fc5d44.exe
"C:\Users\Admin\AppData\Local\Temp\1f1fdf28cd3f106a35a7e57b56fc5d44.exe"
1⤵
- Modifies WinLogon for persistence
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1508

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

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

Replay Monitor

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Downloads

memory/584-10-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/584-15-0x000000000F1A0000-0x000000000F1B6000-memory.dmp

Filesize
88KB

Download
memory/584-25-0x000000000F1E0000-0x000000000F1F6000-memory.dmp

Filesize
88KB

Download
memory/584-35-0x000000000F220000-0x000000000F236000-memory.dmp

Filesize
88KB

Download
memory/584-45-0x000000000F260000-0x000000000F276000-memory.dmp

Filesize
88KB

Download
memory/584-50-0x000000000F280000-0x000000000F296000-memory.dmp

Filesize
88KB

Download
memory/584-60-0x000000000F2C0000-0x000000000F2D6000-memory.dmp

Filesize
88KB

Download
memory/584-65-0x000000000F2E0000-0x000000000F2F6000-memory.dmp

Filesize
88KB

Download
memory/584-75-0x000000000F320000-0x000000000F336000-memory.dmp

Filesize
88KB

Download
memory/584-80-0x000000000F340000-0x000000000F356000-memory.dmp

Filesize
88KB

Download
memory/584-85-0x000000000F360000-0x000000000F376000-memory.dmp

Filesize
88KB

Download
memory/584-95-0x000000000F3A0000-0x000000000F3B6000-memory.dmp

Filesize
88KB

Download
memory/584-100-0x000000000F3C0000-0x000000000F3D6000-memory.dmp

Filesize
88KB

Download
memory/584-105-0x000000000F3E0000-0x000000000F3F6000-memory.dmp

Filesize
88KB

Download
memory/584-110-0x000000000F400000-0x000000000F416000-memory.dmp

Filesize
88KB

Download
memory/584-120-0x000000000F440000-0x000000000F456000-memory.dmp

Filesize
88KB

Download
memory/584-125-0x000000000F460000-0x000000000F476000-memory.dmp

Filesize
88KB

Download
memory/584-135-0x000000000F4A0000-0x000000000F4B6000-memory.dmp

Filesize
88KB

Download
memory/584-130-0x000000000F480000-0x000000000F496000-memory.dmp

Filesize
88KB

Download
memory/584-140-0x000000000F4C0000-0x000000000F4D6000-memory.dmp

Filesize
88KB

Download
memory/584-145-0x000000000F4E0000-0x000000000F4F6000-memory.dmp

Filesize
88KB

Download
memory/584-150-0x000000000F500000-0x000000000F516000-memory.dmp

Filesize
88KB

Download
memory/584-155-0x000000000F520000-0x000000000F536000-memory.dmp

Filesize
88KB

Download
memory/584-160-0x000000000F540000-0x000000000F556000-memory.dmp

Filesize
88KB

Download
memory/584-170-0x000000000F580000-0x000000000F596000-memory.dmp

Filesize
88KB

Download
memory/584-175-0x000000000F5A0000-0x000000000F5B6000-memory.dmp

Filesize
88KB

Download
memory/584-185-0x000000000F5E0000-0x000000000F5F6000-memory.dmp

Filesize
88KB

Download
memory/584-180-0x000000000F5C0000-0x000000000F5D6000-memory.dmp

Filesize
88KB

Download
memory/584-195-0x000000000F620000-0x000000000F636000-memory.dmp

Filesize
88KB

Download
memory/584-200-0x000000000F640000-0x000000000F656000-memory.dmp

Filesize
88KB

Download
memory/584-205-0x000000000F660000-0x000000000F676000-memory.dmp

Filesize
88KB

Download
memory/584-215-0x000000000F6A0000-0x000000000F6B6000-memory.dmp

Filesize
88KB

Download
memory/584-220-0x000000000F6C0000-0x000000000F6D6000-memory.dmp

Filesize
88KB

Download
memory/584-225-0x000000000F6E0000-0x000000000F6F6000-memory.dmp

Filesize
88KB

Download
memory/584-235-0x000000000F720000-0x000000000F736000-memory.dmp

Filesize
88KB

Download
memory/584-240-0x000000000F740000-0x000000000F756000-memory.dmp

Filesize
88KB

Download
memory/584-250-0x000000000F780000-0x000000000F796000-memory.dmp

Filesize
88KB

Download
memory/584-255-0x000000000F7A0000-0x000000000F7B6000-memory.dmp

Filesize
88KB

Download
memory/584-265-0x000000000F7E0000-0x000000000F7F6000-memory.dmp

Filesize
88KB

Download
memory/584-270-0x000000000F800000-0x000000000F816000-memory.dmp

Filesize
88KB

Download
memory/584-280-0x000000000F840000-0x000000000F856000-memory.dmp

Filesize
88KB

Download
memory/584-285-0x000000000F860000-0x000000000F876000-memory.dmp

Filesize
88KB

Download
memory/584-295-0x000000000F8A0000-0x000000000F8B6000-memory.dmp

Filesize
88KB

Download
memory/584-300-0x000000000F8C0000-0x000000000F8D6000-memory.dmp

Filesize
88KB

Download
memory/584-305-0x000000000F8E0000-0x000000000F8F6000-memory.dmp

Filesize
88KB

Download
memory/584-310-0x000000000F900000-0x000000000F916000-memory.dmp

Filesize
88KB

Download
memory/584-320-0x000000000F940000-0x000000000F956000-memory.dmp

Filesize
88KB

Download
memory/584-325-0x000000000F960000-0x000000000F976000-memory.dmp

Filesize
88KB

Download
memory/584-315-0x000000000F920000-0x000000000F936000-memory.dmp

Filesize
88KB

Download
memory/584-290-0x000000000F880000-0x000000000F896000-memory.dmp

Filesize
88KB

Download
memory/584-275-0x000000000F820000-0x000000000F836000-memory.dmp

Filesize
88KB

Download
memory/584-260-0x000000000F7C0000-0x000000000F7D6000-memory.dmp

Filesize
88KB

Download
memory/584-245-0x000000000F760000-0x000000000F776000-memory.dmp

Filesize
88KB

Download
memory/584-230-0x000000000F700000-0x000000000F716000-memory.dmp

Filesize
88KB

Download
memory/584-210-0x000000000F680000-0x000000000F696000-memory.dmp

Filesize
88KB

Download
memory/584-190-0x000000000F600000-0x000000000F616000-memory.dmp

Filesize
88KB

Download
memory/584-165-0x000000000F560000-0x000000000F576000-memory.dmp

Filesize
88KB

Download
memory/584-115-0x000000000F420000-0x000000000F436000-memory.dmp

Filesize
88KB

Download
memory/584-90-0x000000000F380000-0x000000000F396000-memory.dmp

Filesize
88KB

Download
memory/584-70-0x000000000F300000-0x000000000F316000-memory.dmp

Filesize
88KB

Download
memory/584-55-0x000000000F2A0000-0x000000000F2B6000-memory.dmp

Filesize
88KB

Download
memory/584-40-0x000000000F240000-0x000000000F256000-memory.dmp

Filesize
88KB

Download
memory/584-30-0x000000000F200000-0x000000000F216000-memory.dmp

Filesize
88KB

Download
memory/584-20-0x000000000F1C0000-0x000000000F1D6000-memory.dmp

Filesize
88KB

Download
memory/1508-0-0x00000000004F0000-0x0000000000500000-memory.dmp

Filesize
64KB

Download
memory/1508-1-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download