5d9c11f9bc271467f3d0502c3d934649e9b6c279e547d2648ce2e273d7d59e70

Analysis

max time kernel
114s
max time network
135s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
14/01/2024, 02:23

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General

Target

5a077fd806f92bd05acfa6eba41ea3e4.exe
Size

44KB
MD5

5a077fd806f92bd05acfa6eba41ea3e4
SHA1

46b21acf056873ea585c39bd5011ae2abecae380
SHA256

5d9c11f9bc271467f3d0502c3d934649e9b6c279e547d2648ce2e273d7d59e70
SHA512

177a7531fab87f81029d85b36d642b853771e04b6fb22a4f71791d64a4f06969e2cefd3ac1ce647a48a00209280a9a34276cfcb8d683d6ba930c048a1d75bb69
SSDEEP

768:5LTHCo5B/wy/7AI88Iqol2raOPr2uleSA6t3ClWlFoFSHxRtNLmjfW8LUYy:hBwy/7AI88Hol2raOP+SAA3ClWn/fHLy

Score

10^/10

persistence upx

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\\ntos.exe,"	5a077fd806f92bd05acfa6eba41ea3e4.exe

UPX packed file 1 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2328-0-0x0000000000400000-0x000000000040D000-memory.dmp	upx

Drops file in System32 directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\ntos.exe	5a077fd806f92bd05acfa6eba41ea3e4.exe
File created	C:\Windows\SysWOW64\ntos.exe	5a077fd806f92bd05acfa6eba41ea3e4.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2328	5a077fd806f92bd05acfa6eba41ea3e4.exe
2328	5a077fd806f92bd05acfa6eba41ea3e4.exe
2328	5a077fd806f92bd05acfa6eba41ea3e4.exe
2328	5a077fd806f92bd05acfa6eba41ea3e4.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2328	5a077fd806f92bd05acfa6eba41ea3e4.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 2328 wrote to memory of 616	2328	5a077fd806f92bd05acfa6eba41ea3e4.exe	3
PID 2328 wrote to memory of 616	2328	5a077fd806f92bd05acfa6eba41ea3e4.exe	3
PID 2328 wrote to memory of 616	2328	5a077fd806f92bd05acfa6eba41ea3e4.exe	3
PID 2328 wrote to memory of 616	2328	5a077fd806f92bd05acfa6eba41ea3e4.exe	3
PID 2328 wrote to memory of 616	2328	5a077fd806f92bd05acfa6eba41ea3e4.exe	3
PID 2328 wrote to memory of 616	2328	5a077fd806f92bd05acfa6eba41ea3e4.exe	3
PID 2328 wrote to memory of 616	2328	5a077fd806f92bd05acfa6eba41ea3e4.exe	3
PID 2328 wrote to memory of 616	2328	5a077fd806f92bd05acfa6eba41ea3e4.exe	3
PID 2328 wrote to memory of 616	2328	5a077fd806f92bd05acfa6eba41ea3e4.exe	3
PID 2328 wrote to memory of 616	2328	5a077fd806f92bd05acfa6eba41ea3e4.exe	3
PID 2328 wrote to memory of 616	2328	5a077fd806f92bd05acfa6eba41ea3e4.exe	3
PID 2328 wrote to memory of 616	2328	5a077fd806f92bd05acfa6eba41ea3e4.exe	3
PID 2328 wrote to memory of 616	2328	5a077fd806f92bd05acfa6eba41ea3e4.exe	3
PID 2328 wrote to memory of 616	2328	5a077fd806f92bd05acfa6eba41ea3e4.exe	3
PID 2328 wrote to memory of 616	2328	5a077fd806f92bd05acfa6eba41ea3e4.exe	3
PID 2328 wrote to memory of 616	2328	5a077fd806f92bd05acfa6eba41ea3e4.exe	3
PID 2328 wrote to memory of 616	2328	5a077fd806f92bd05acfa6eba41ea3e4.exe	3
PID 2328 wrote to memory of 616	2328	5a077fd806f92bd05acfa6eba41ea3e4.exe	3
PID 2328 wrote to memory of 616	2328	5a077fd806f92bd05acfa6eba41ea3e4.exe	3
PID 2328 wrote to memory of 616	2328	5a077fd806f92bd05acfa6eba41ea3e4.exe	3
PID 2328 wrote to memory of 616	2328	5a077fd806f92bd05acfa6eba41ea3e4.exe	3
PID 2328 wrote to memory of 616	2328	5a077fd806f92bd05acfa6eba41ea3e4.exe	3
PID 2328 wrote to memory of 616	2328	5a077fd806f92bd05acfa6eba41ea3e4.exe	3
PID 2328 wrote to memory of 616	2328	5a077fd806f92bd05acfa6eba41ea3e4.exe	3
PID 2328 wrote to memory of 616	2328	5a077fd806f92bd05acfa6eba41ea3e4.exe	3
PID 2328 wrote to memory of 616	2328	5a077fd806f92bd05acfa6eba41ea3e4.exe	3
PID 2328 wrote to memory of 616	2328	5a077fd806f92bd05acfa6eba41ea3e4.exe	3
PID 2328 wrote to memory of 616	2328	5a077fd806f92bd05acfa6eba41ea3e4.exe	3
PID 2328 wrote to memory of 616	2328	5a077fd806f92bd05acfa6eba41ea3e4.exe	3
PID 2328 wrote to memory of 616	2328	5a077fd806f92bd05acfa6eba41ea3e4.exe	3
PID 2328 wrote to memory of 616	2328	5a077fd806f92bd05acfa6eba41ea3e4.exe	3
PID 2328 wrote to memory of 616	2328	5a077fd806f92bd05acfa6eba41ea3e4.exe	3
PID 2328 wrote to memory of 616	2328	5a077fd806f92bd05acfa6eba41ea3e4.exe	3
PID 2328 wrote to memory of 616	2328	5a077fd806f92bd05acfa6eba41ea3e4.exe	3
PID 2328 wrote to memory of 616	2328	5a077fd806f92bd05acfa6eba41ea3e4.exe	3
PID 2328 wrote to memory of 616	2328	5a077fd806f92bd05acfa6eba41ea3e4.exe	3
PID 2328 wrote to memory of 616	2328	5a077fd806f92bd05acfa6eba41ea3e4.exe	3
PID 2328 wrote to memory of 616	2328	5a077fd806f92bd05acfa6eba41ea3e4.exe	3
PID 2328 wrote to memory of 616	2328	5a077fd806f92bd05acfa6eba41ea3e4.exe	3
PID 2328 wrote to memory of 616	2328	5a077fd806f92bd05acfa6eba41ea3e4.exe	3
PID 2328 wrote to memory of 616	2328	5a077fd806f92bd05acfa6eba41ea3e4.exe	3
PID 2328 wrote to memory of 616	2328	5a077fd806f92bd05acfa6eba41ea3e4.exe	3
PID 2328 wrote to memory of 616	2328	5a077fd806f92bd05acfa6eba41ea3e4.exe	3
PID 2328 wrote to memory of 616	2328	5a077fd806f92bd05acfa6eba41ea3e4.exe	3
PID 2328 wrote to memory of 616	2328	5a077fd806f92bd05acfa6eba41ea3e4.exe	3
PID 2328 wrote to memory of 616	2328	5a077fd806f92bd05acfa6eba41ea3e4.exe	3
PID 2328 wrote to memory of 616	2328	5a077fd806f92bd05acfa6eba41ea3e4.exe	3
PID 2328 wrote to memory of 616	2328	5a077fd806f92bd05acfa6eba41ea3e4.exe	3
PID 2328 wrote to memory of 616	2328	5a077fd806f92bd05acfa6eba41ea3e4.exe	3
PID 2328 wrote to memory of 616	2328	5a077fd806f92bd05acfa6eba41ea3e4.exe	3
PID 2328 wrote to memory of 616	2328	5a077fd806f92bd05acfa6eba41ea3e4.exe	3
PID 2328 wrote to memory of 616	2328	5a077fd806f92bd05acfa6eba41ea3e4.exe	3
PID 2328 wrote to memory of 616	2328	5a077fd806f92bd05acfa6eba41ea3e4.exe	3
PID 2328 wrote to memory of 616	2328	5a077fd806f92bd05acfa6eba41ea3e4.exe	3
PID 2328 wrote to memory of 616	2328	5a077fd806f92bd05acfa6eba41ea3e4.exe	3
PID 2328 wrote to memory of 616	2328	5a077fd806f92bd05acfa6eba41ea3e4.exe	3
PID 2328 wrote to memory of 616	2328	5a077fd806f92bd05acfa6eba41ea3e4.exe	3
PID 2328 wrote to memory of 616	2328	5a077fd806f92bd05acfa6eba41ea3e4.exe	3
PID 2328 wrote to memory of 616	2328	5a077fd806f92bd05acfa6eba41ea3e4.exe	3
PID 2328 wrote to memory of 616	2328	5a077fd806f92bd05acfa6eba41ea3e4.exe	3
PID 2328 wrote to memory of 616	2328	5a077fd806f92bd05acfa6eba41ea3e4.exe	3
PID 2328 wrote to memory of 616	2328	5a077fd806f92bd05acfa6eba41ea3e4.exe	3
PID 2328 wrote to memory of 616	2328	5a077fd806f92bd05acfa6eba41ea3e4.exe	3
PID 2328 wrote to memory of 616	2328	5a077fd806f92bd05acfa6eba41ea3e4.exe	3

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

C:\Users\Admin\AppData\Local\Temp\5a077fd806f92bd05acfa6eba41ea3e4.exe
"C:\Users\Admin\AppData\Local\Temp\5a077fd806f92bd05acfa6eba41ea3e4.exe"
1⤵
- Modifies WinLogon for persistence
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2328

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/616-175-0x0000000006160000-0x0000000006182000-memory.dmp

Filesize
136KB

Download
memory/616-180-0x0000000006190000-0x00000000061B2000-memory.dmp

Filesize
136KB

Download
memory/616-25-0x0000000005BC0000-0x0000000005BE2000-memory.dmp

Filesize
136KB

Download
memory/616-30-0x0000000005BF0000-0x0000000005C12000-memory.dmp

Filesize
136KB

Download
memory/616-35-0x0000000005C20000-0x0000000005C42000-memory.dmp

Filesize
136KB

Download
memory/616-190-0x00000000061F0000-0x0000000006212000-memory.dmp

Filesize
136KB

Download
memory/616-250-0x0000000006430000-0x0000000006452000-memory.dmp

Filesize
136KB

Download
memory/616-40-0x0000000005C50000-0x0000000005C72000-memory.dmp

Filesize
136KB

Download
memory/616-45-0x0000000005C80000-0x0000000005CA2000-memory.dmp

Filesize
136KB

Download
memory/616-50-0x0000000005CB0000-0x0000000005CD2000-memory.dmp

Filesize
136KB

Download
memory/616-55-0x0000000005CE0000-0x0000000005D02000-memory.dmp

Filesize
136KB

Download
memory/616-60-0x0000000005D10000-0x0000000005D32000-memory.dmp

Filesize
136KB

Download
memory/616-65-0x0000000005D40000-0x0000000005D62000-memory.dmp

Filesize
136KB

Download
memory/616-70-0x0000000005D70000-0x0000000005D92000-memory.dmp

Filesize
136KB

Download
memory/616-75-0x0000000005DA0000-0x0000000005DC2000-memory.dmp

Filesize
136KB

Download
memory/616-80-0x0000000005DD0000-0x0000000005DF2000-memory.dmp

Filesize
136KB

Download
memory/616-85-0x0000000005E00000-0x0000000005E22000-memory.dmp

Filesize
136KB

Download
memory/616-90-0x0000000005E30000-0x0000000005E52000-memory.dmp

Filesize
136KB

Download
memory/616-95-0x0000000005E60000-0x0000000005E82000-memory.dmp

Filesize
136KB

Download
memory/616-100-0x0000000005E90000-0x0000000005EB2000-memory.dmp

Filesize
136KB

Download
memory/616-105-0x0000000005EC0000-0x0000000005EE2000-memory.dmp

Filesize
136KB

Download
memory/616-110-0x0000000005EF0000-0x0000000005F12000-memory.dmp

Filesize
136KB

Download
memory/616-115-0x0000000005F20000-0x0000000005F42000-memory.dmp

Filesize
136KB

Download
memory/616-120-0x0000000005F50000-0x0000000005F72000-memory.dmp

Filesize
136KB

Download
memory/616-125-0x0000000005F80000-0x0000000005FA2000-memory.dmp

Filesize
136KB

Download
memory/616-130-0x0000000005FB0000-0x0000000005FD2000-memory.dmp

Filesize
136KB

Download
memory/616-135-0x0000000005FE0000-0x0000000006002000-memory.dmp

Filesize
136KB

Download
memory/616-140-0x0000000006010000-0x0000000006032000-memory.dmp

Filesize
136KB

Download
memory/616-145-0x0000000006040000-0x0000000006062000-memory.dmp

Filesize
136KB

Download
memory/616-150-0x0000000006070000-0x0000000006092000-memory.dmp

Filesize
136KB

Download
memory/616-155-0x00000000060A0000-0x00000000060C2000-memory.dmp

Filesize
136KB

Download
memory/616-160-0x00000000060D0000-0x00000000060F2000-memory.dmp

Filesize
136KB

Download
memory/616-165-0x0000000006100000-0x0000000006122000-memory.dmp

Filesize
136KB

Download
memory/616-185-0x00000000061C0000-0x00000000061E2000-memory.dmp

Filesize
136KB

Download
memory/616-20-0x0000000005B90000-0x0000000005BB2000-memory.dmp

Filesize
136KB

Download
memory/616-15-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/616-170-0x0000000006130000-0x0000000006152000-memory.dmp

Filesize
136KB

Download
memory/616-195-0x0000000006220000-0x0000000006242000-memory.dmp

Filesize
136KB

Download
memory/616-200-0x0000000006250000-0x0000000006272000-memory.dmp

Filesize
136KB

Download
memory/616-205-0x0000000006280000-0x00000000062A2000-memory.dmp

Filesize
136KB

Download
memory/616-215-0x00000000062E0000-0x0000000006302000-memory.dmp

Filesize
136KB

Download
memory/616-220-0x0000000006310000-0x0000000006332000-memory.dmp

Filesize
136KB

Download
memory/616-230-0x0000000006370000-0x0000000006392000-memory.dmp

Filesize
136KB

Download
memory/616-235-0x00000000063A0000-0x00000000063C2000-memory.dmp

Filesize
136KB

Download
memory/616-240-0x00000000063D0000-0x00000000063F2000-memory.dmp

Filesize
136KB

Download
memory/616-225-0x0000000006340000-0x0000000006362000-memory.dmp

Filesize
136KB

Download
memory/616-210-0x00000000062B0000-0x00000000062D2000-memory.dmp

Filesize
136KB

Download
memory/616-245-0x0000000006400000-0x0000000006422000-memory.dmp

Filesize
136KB

Download
memory/616-255-0x0000000006460000-0x0000000006482000-memory.dmp

Filesize
136KB

Download
memory/616-265-0x00000000064C0000-0x00000000064E2000-memory.dmp

Filesize
136KB

Download
memory/616-270-0x00000000064F0000-0x0000000006512000-memory.dmp

Filesize
136KB

Download
memory/616-280-0x0000000006550000-0x0000000006572000-memory.dmp

Filesize
136KB

Download
memory/616-285-0x0000000006580000-0x00000000065A2000-memory.dmp

Filesize
136KB

Download
memory/616-290-0x00000000065B0000-0x00000000065D2000-memory.dmp

Filesize
136KB

Download
memory/616-300-0x0000000006610000-0x0000000006632000-memory.dmp

Filesize
136KB

Download
memory/616-305-0x0000000006640000-0x0000000006662000-memory.dmp

Filesize
136KB

Download
memory/616-310-0x0000000006670000-0x0000000006692000-memory.dmp

Filesize
136KB

Download
memory/616-295-0x00000000065E0000-0x0000000006602000-memory.dmp

Filesize
136KB

Download
memory/616-275-0x0000000006520000-0x0000000006542000-memory.dmp

Filesize
136KB

Download
memory/616-260-0x0000000006490000-0x00000000064B2000-memory.dmp

Filesize
136KB

Download
memory/2328-1-0x00000000001D0000-0x00000000001DB000-memory.dmp

Filesize
44KB

Download
memory/2328-0-0x0000000000400000-0x000000000040D000-memory.dmp

Filesize
52KB

Download
memory/2328-3-0x0000000000401000-0x000000000040F000-memory.dmp

Filesize
56KB

Download
memory/2328-2-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/2328-4-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/2328-5-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/2328-6-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/2328-2923-0x0000000000400000-0x000000000040D000-memory.dmp

Filesize
52KB

Download
memory/2328-3669-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download