58dd22fb5aa1d04d6aeb9640c5b08e5aa0c483cb802b57bf43d7f3a45f4f08b2

Analysis

max time kernel
151s
max time network
61s
platform
windows7_x64
resource
win7-20220901-en
resource tags

arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
submitted
02/10/2022, 13:27

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General

Target

58dd22fb5aa1d04d6aeb9640c5b08e5aa0c483cb802b57bf43d7f3a45f4f08b2.exe
Size

60KB
MD5

6cb9dbdb8daa4e7aabbb12753f185270
SHA1

85241c06143e9d1b1800b9292f604dbe35018d6e
SHA256

58dd22fb5aa1d04d6aeb9640c5b08e5aa0c483cb802b57bf43d7f3a45f4f08b2
SHA512

a8f170b188874780aae114975f3dbdbd9ab9f8ddd71718546e0973124affbdba074fe6b7c456f55255a147a766c211a09156d27b2619d229aeb144e71dcafb9c
SSDEEP

768:0yki1Fqicx9IrQFmUuTK1n39AQdoxZ8IL7kA1yUchp/vs/zDvo2rPsoCK+UJv:9kSncCU/1KqokIfFchp/vezVTsV

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\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\skype.dat"	svchost.exe

UPX packed file 8 IoCs

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

upx

resource	yara_rule
behavioral1/memory/112-56-0x0000000000400000-0x0000000000417000-memory.dmp	upx
behavioral1/memory/112-58-0x0000000000400000-0x0000000000417000-memory.dmp	upx
behavioral1/memory/112-59-0x0000000000400000-0x0000000000417000-memory.dmp	upx
behavioral1/memory/112-63-0x0000000000400000-0x0000000000417000-memory.dmp	upx
behavioral1/memory/112-64-0x0000000000400000-0x0000000000417000-memory.dmp	upx
behavioral1/memory/112-65-0x0000000000400000-0x0000000000417000-memory.dmp	upx
behavioral1/memory/112-66-0x0000000000400000-0x0000000000417000-memory.dmp	upx
behavioral1/memory/112-67-0x0000000000400000-0x0000000000417000-memory.dmp	upx

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
112	58dd22fb5aa1d04d6aeb9640c5b08e5aa0c483cb802b57bf43d7f3a45f4f08b2.exe
1044	svchost.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1720 set thread context of 112	1720	58dd22fb5aa1d04d6aeb9640c5b08e5aa0c483cb802b57bf43d7f3a45f4f08b2.exe	27

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
1044	svchost.exe
1044	svchost.exe
1044	svchost.exe
1044	svchost.exe
1044	svchost.exe
1044	svchost.exe
1044	svchost.exe
1044	svchost.exe
1044	svchost.exe
1044	svchost.exe
1044	svchost.exe
1044	svchost.exe
1044	svchost.exe
1044	svchost.exe
1044	svchost.exe
1044	svchost.exe
1044	svchost.exe
1044	svchost.exe
1044	svchost.exe
1044	svchost.exe
1044	svchost.exe
1044	svchost.exe
1044	svchost.exe
1044	svchost.exe
1044	svchost.exe
1044	svchost.exe
1044	svchost.exe
1044	svchost.exe
1044	svchost.exe
1044	svchost.exe
1044	svchost.exe
1044	svchost.exe
1044	svchost.exe
1044	svchost.exe
1044	svchost.exe
1044	svchost.exe
1044	svchost.exe
1044	svchost.exe
1044	svchost.exe
1044	svchost.exe
1044	svchost.exe
1044	svchost.exe
1044	svchost.exe
1044	svchost.exe
1044	svchost.exe
1044	svchost.exe
1044	svchost.exe
1044	svchost.exe
1044	svchost.exe
1044	svchost.exe
1044	svchost.exe
1044	svchost.exe
1044	svchost.exe
1044	svchost.exe
1044	svchost.exe
1044	svchost.exe
1044	svchost.exe
1044	svchost.exe
1044	svchost.exe
1044	svchost.exe
1044	svchost.exe
1044	svchost.exe
1044	svchost.exe
1044	svchost.exe

Suspicious behavior: MapViewOfSection 2 IoCs

pid	Process
112	58dd22fb5aa1d04d6aeb9640c5b08e5aa0c483cb802b57bf43d7f3a45f4f08b2.exe
112	58dd22fb5aa1d04d6aeb9640c5b08e5aa0c483cb802b57bf43d7f3a45f4f08b2.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
1516	ctfmon.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1044	svchost.exe
1044	svchost.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1720 wrote to memory of 112	1720	58dd22fb5aa1d04d6aeb9640c5b08e5aa0c483cb802b57bf43d7f3a45f4f08b2.exe	27
PID 1720 wrote to memory of 112	1720	58dd22fb5aa1d04d6aeb9640c5b08e5aa0c483cb802b57bf43d7f3a45f4f08b2.exe	27
PID 1720 wrote to memory of 112	1720	58dd22fb5aa1d04d6aeb9640c5b08e5aa0c483cb802b57bf43d7f3a45f4f08b2.exe	27
PID 1720 wrote to memory of 112	1720	58dd22fb5aa1d04d6aeb9640c5b08e5aa0c483cb802b57bf43d7f3a45f4f08b2.exe	27
PID 1720 wrote to memory of 112	1720	58dd22fb5aa1d04d6aeb9640c5b08e5aa0c483cb802b57bf43d7f3a45f4f08b2.exe	27
PID 1720 wrote to memory of 112	1720	58dd22fb5aa1d04d6aeb9640c5b08e5aa0c483cb802b57bf43d7f3a45f4f08b2.exe	27
PID 1720 wrote to memory of 112	1720	58dd22fb5aa1d04d6aeb9640c5b08e5aa0c483cb802b57bf43d7f3a45f4f08b2.exe	27
PID 1720 wrote to memory of 112	1720	58dd22fb5aa1d04d6aeb9640c5b08e5aa0c483cb802b57bf43d7f3a45f4f08b2.exe	27
PID 1044 wrote to memory of 1516	1044	svchost.exe	29
PID 1044 wrote to memory of 1516	1044	svchost.exe	29
PID 1044 wrote to memory of 1516	1044	svchost.exe	29
PID 1044 wrote to memory of 1516	1044	svchost.exe	29

C:\Users\Admin\AppData\Local\Temp\58dd22fb5aa1d04d6aeb9640c5b08e5aa0c483cb802b57bf43d7f3a45f4f08b2.exe
"C:\Users\Admin\AppData\Local\Temp\58dd22fb5aa1d04d6aeb9640c5b08e5aa0c483cb802b57bf43d7f3a45f4f08b2.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1720
- C:\Users\Admin\AppData\Local\Temp\58dd22fb5aa1d04d6aeb9640c5b08e5aa0c483cb802b57bf43d7f3a45f4f08b2.exe
  "C:\Users\Admin\AppData\Local\Temp\58dd22fb5aa1d04d6aeb9640c5b08e5aa0c483cb802b57bf43d7f3a45f4f08b2.exe"
  2⤵
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - Suspicious behavior: MapViewOfSection
  PID:112

C:\Windows\syswow64\svchost.exe
"C:\Windows\syswow64\svchost.exe"
1⤵
- Modifies WinLogon for persistence
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1044
- C:\Windows\SysWOW64\ctfmon.exe
  ctfmon.exe
  2⤵
  - Suspicious use of FindShellTrayWindow
  PID:1516

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/112-64-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/112-65-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/112-56-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/112-58-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/112-59-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/112-67-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/112-63-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/112-55-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/112-66-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/1044-68-0x00000000765B1000-0x00000000765B3000-memory.dmp

Filesize
8KB

Download
memory/1224-70-0x00000000775E0000-0x0000000077789000-memory.dmp

Filesize
1.7MB

Download
memory/1224-71-0x0000000002A40000-0x0000000002A47000-memory.dmp

Filesize
28KB

Download
memory/1224-72-0x00000000775E0000-0x0000000077789000-memory.dmp

Filesize
1.7MB

Download
memory/1720-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1720-61-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download