0f94ecc5132b9d5f61f4983a36587cb08f58bbf7f3d62b4775da1e892f961f3d

Analysis

max time kernel
149s
max time network
149s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
02-01-2025 00:36

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General

Target

malware.exe
Size

168KB
MD5

aa7814ec18864f0b90a1100a624cb1fd
SHA1

81f5af5bb7b98d4f4901330aadce275cf8529453
SHA256

8f9828956b3a0894dfe5fdd3f0e9ca5919f30f6a9eedb8c52b818808c757f72c
SHA512

7e91a074fe75c9629148a77897afac05433d0e5d99d30683e0c60f58a840002b1c309c5623ab0d862f7b52bdb8be41cd2e0b3ebc14235cad2a65985214a6f288
SSDEEP

3072:bk5zdU9Qy3RDAMx4k3HeSUNz2Pbjc7bN5nzI9CUTjcqyCKGBp2gGrND0GU:w5zd8RDr6zSAqPbjMbnzpWIqvKGtg

Score

10^/10

discovery persistence

Malware Config

Signatures

Modifies WinLogon for persistence 2 TTPs 2 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\shell = "explorer.exe,\"C:\\Users\\Admin\\AppData\\Local\\Temp\\malware.exe\""	malware.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Userinit = "userinit.exe,\"C:\\Windows\\system32\\clientsvr.exe\""	malware.exe

Executes dropped EXE 6 IoCs

pid	Process
2500	explorer.exe
2564	explorer.exe
2260	explorer.exe
2952	explorer.exe
2980	explorer.exe
2920	explorer.exe

Loads dropped DLL 2 IoCs

pid	Process
2360	malware.exe
2360	malware.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce\explorer = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\malware.exe\""	malware.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\clientsvr.exe	malware.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2324 set thread context of 2360	2324	malware.exe	28

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	malware.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	explorer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	malware.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2324	malware.exe
2500	explorer.exe
2500	explorer.exe
2500	explorer.exe
2500	explorer.exe
2500	explorer.exe
2500	explorer.exe
2500	explorer.exe
2500	explorer.exe
2500	explorer.exe
2500	explorer.exe
2500	explorer.exe
2360	malware.exe
2360	malware.exe
2360	malware.exe
2360	malware.exe
2360	malware.exe
2360	malware.exe
2360	malware.exe
2360	malware.exe
2360	malware.exe
2360	malware.exe
2360	malware.exe
2360	malware.exe
2360	malware.exe
2360	malware.exe
2360	malware.exe
2360	malware.exe
2360	malware.exe
2360	malware.exe
2360	malware.exe
2360	malware.exe
2360	malware.exe
2360	malware.exe
2360	malware.exe
2360	malware.exe
2360	malware.exe
2360	malware.exe
2360	malware.exe
2360	malware.exe
2360	malware.exe
2360	malware.exe
2360	malware.exe
2360	malware.exe
2360	malware.exe
2360	malware.exe
2360	malware.exe
2360	malware.exe
2360	malware.exe
2360	malware.exe
2360	malware.exe
2360	malware.exe
2360	malware.exe
2360	malware.exe
2360	malware.exe
2360	malware.exe
2360	malware.exe
2360	malware.exe
2360	malware.exe
2360	malware.exe
2360	malware.exe
2360	malware.exe
2360	malware.exe
2360	malware.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2324	malware.exe
Token: SeDebugPrivilege	2500	explorer.exe
Token: SeDebugPrivilege	2360	malware.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2360	malware.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 2324 wrote to memory of 2360	2324	malware.exe	28
PID 2324 wrote to memory of 2360	2324	malware.exe	28
PID 2324 wrote to memory of 2360	2324	malware.exe	28
PID 2324 wrote to memory of 2360	2324	malware.exe	28
PID 2324 wrote to memory of 2360	2324	malware.exe	28
PID 2324 wrote to memory of 2360	2324	malware.exe	28
PID 2324 wrote to memory of 2360	2324	malware.exe	28
PID 2324 wrote to memory of 2360	2324	malware.exe	28
PID 2324 wrote to memory of 2360	2324	malware.exe	28
PID 2360 wrote to memory of 2500	2360	malware.exe	32
PID 2360 wrote to memory of 2500	2360	malware.exe	32
PID 2360 wrote to memory of 2500	2360	malware.exe	32
PID 2360 wrote to memory of 2500	2360	malware.exe	32
PID 2500 wrote to memory of 2564	2500	explorer.exe	33
PID 2500 wrote to memory of 2564	2500	explorer.exe	33
PID 2500 wrote to memory of 2564	2500	explorer.exe	33
PID 2500 wrote to memory of 2564	2500	explorer.exe	33
PID 2500 wrote to memory of 2260	2500	explorer.exe	34
PID 2500 wrote to memory of 2260	2500	explorer.exe	34
PID 2500 wrote to memory of 2260	2500	explorer.exe	34
PID 2500 wrote to memory of 2260	2500	explorer.exe	34
PID 2500 wrote to memory of 2952	2500	explorer.exe	35
PID 2500 wrote to memory of 2952	2500	explorer.exe	35
PID 2500 wrote to memory of 2952	2500	explorer.exe	35
PID 2500 wrote to memory of 2952	2500	explorer.exe	35
PID 2500 wrote to memory of 2980	2500	explorer.exe	36
PID 2500 wrote to memory of 2980	2500	explorer.exe	36
PID 2500 wrote to memory of 2980	2500	explorer.exe	36
PID 2500 wrote to memory of 2980	2500	explorer.exe	36
PID 2500 wrote to memory of 2920	2500	explorer.exe	37
PID 2500 wrote to memory of 2920	2500	explorer.exe	37
PID 2500 wrote to memory of 2920	2500	explorer.exe	37
PID 2500 wrote to memory of 2920	2500	explorer.exe	37

C:\Users\Admin\AppData\Local\Temp\malware.exe
"C:\Users\Admin\AppData\Local\Temp\malware.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2324
- C:\Users\Admin\AppData\Local\Temp\malware.exe
  "C:\Users\Admin\AppData\Local\Temp\malware.exe"
  2⤵
  - Modifies WinLogon for persistence
  - Loads dropped DLL
  - Adds Run key to start application
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2360
- - C:\ProgramData\898583\explorer.exe
    "C:\ProgramData\898583\explorer.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:2500
  - - C:\ProgramData\898583\explorer.exe
      "C:\ProgramData\898583\explorer.exe"
      4⤵
      Executes dropped EXE
      PID:2564
  - - C:\ProgramData\898583\explorer.exe
      "C:\ProgramData\898583\explorer.exe"
      4⤵
      Executes dropped EXE
      PID:2260
  - - C:\ProgramData\898583\explorer.exe
      "C:\ProgramData\898583\explorer.exe"
      4⤵
      Executes dropped EXE
      PID:2952
  - - C:\ProgramData\898583\explorer.exe
      "C:\ProgramData\898583\explorer.exe"
      4⤵
      Executes dropped EXE
      PID:2980
  - - C:\ProgramData\898583\explorer.exe
      "C:\ProgramData\898583\explorer.exe"
      4⤵
      Executes dropped EXE
      PID:2920

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

\ProgramData\898583\explorer.exe

Filesize
168KB

MD5
aa7814ec18864f0b90a1100a624cb1fd

SHA1
81f5af5bb7b98d4f4901330aadce275cf8529453

SHA256
8f9828956b3a0894dfe5fdd3f0e9ca5919f30f6a9eedb8c52b818808c757f72c

SHA512
7e91a074fe75c9629148a77897afac05433d0e5d99d30683e0c60f58a840002b1c309c5623ab0d862f7b52bdb8be41cd2e0b3ebc14235cad2a65985214a6f288

Download Submit
memory/2324-0-0x0000000074211000-0x0000000074212000-memory.dmp

Filesize
4KB

Download
memory/2324-1-0x0000000074210000-0x00000000747BB000-memory.dmp

Filesize
5.7MB

Download
memory/2324-2-0x0000000074210000-0x00000000747BB000-memory.dmp

Filesize
5.7MB

Download
memory/2324-3-0x0000000074210000-0x00000000747BB000-memory.dmp

Filesize
5.7MB

Download
memory/2324-37-0x0000000074210000-0x00000000747BB000-memory.dmp

Filesize
5.7MB

Download
memory/2360-6-0x0000000000400000-0x000000000043E000-memory.dmp

Filesize
248KB

Download
memory/2360-23-0x0000000074210000-0x00000000747BB000-memory.dmp

Filesize
5.7MB

Download
memory/2360-12-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2360-8-0x0000000000400000-0x000000000043E000-memory.dmp

Filesize
248KB

Download
memory/2360-18-0x0000000000400000-0x000000000043E000-memory.dmp

Filesize
248KB

Download
memory/2360-19-0x0000000074210000-0x00000000747BB000-memory.dmp

Filesize
5.7MB

Download
memory/2360-21-0x0000000074210000-0x00000000747BB000-memory.dmp

Filesize
5.7MB

Download
memory/2360-16-0x0000000000400000-0x000000000043E000-memory.dmp

Filesize
248KB

Download
memory/2360-14-0x0000000000400000-0x000000000043E000-memory.dmp

Filesize
248KB

Download
memory/2360-38-0x0000000074210000-0x00000000747BB000-memory.dmp

Filesize
5.7MB

Download
memory/2360-4-0x0000000000400000-0x000000000043E000-memory.dmp

Filesize
248KB

Download
memory/2500-36-0x0000000074210000-0x00000000747BB000-memory.dmp

Filesize
5.7MB

Download
memory/2500-34-0x0000000074210000-0x00000000747BB000-memory.dmp

Filesize
5.7MB

Download
memory/2500-35-0x0000000074210000-0x00000000747BB000-memory.dmp

Filesize
5.7MB

Download
memory/2500-39-0x0000000074210000-0x00000000747BB000-memory.dmp

Filesize
5.7MB

Download
memory/2500-45-0x0000000074210000-0x00000000747BB000-memory.dmp

Filesize
5.7MB

Download