e384306ebe20848c5b9724e503507d3401d49ec00d2a9f5068334f8c8a8d9666

Analysis

max time kernel
149s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
11/06/2024, 06:32

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General

Target
e384306ebe20848c5b9724e503507d3401d49ec00d2a9f5068334f8c8a8d9666.exe
Size 406KB
Sample240611-hasqmaybmk
SHA256 e384306ebe20848c5b9724e503507d3401d49ec00d2a9f5068334f8c8a8d9666
MD5 b4872d5b596dd0f1083775d9103868a4
SHA1 bfd5d80871b0208265cc4fcfdf368969939af578
SHA512 1db35daf32aacc9436d4adf9d0da512df60f9efb701419a817609083c2c3ca3959e5381f0c2bc63236dcd554fd455bbf81c902654d73d3b779f4f1d2759f6aec
SSDEEP 6144:3w9D91dOrcN3ZGXNYFNmIkYvUIelVjjVtGRyFH4P:gtRfJcNYFNm8UhlZGseP
MD5 SHA1 SHA512 SSDEEP

Score

8^/10

bootkit persistence spyware stealer

Malware Config

Signatures

Blocklisted process makes network request 8 IoCs

flow	pid	Process
14	4760	rundll32.exe
24	4760	rundll32.exe
25	4760	rundll32.exe
26	4760	rundll32.exe
37	4760	rundll32.exe
39	4760	rundll32.exe
43	4760	rundll32.exe
47	4760	rundll32.exe

Deletes itself 1 IoCs

pid	Process
4788	nnteo.exe

Executes dropped EXE 1 IoCs

pid	Process
4788	nnteo.exe

Loads dropped DLL 1 IoCs

pid	Process
4760	rundll32.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

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-1-5-21-1162180587-977231257-2194346871-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Dotx = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\Program Files\\rppmm\\pykvujh.dll\",Verify"	rundll32.exe

Enumerates connected drives 3 TTPs 23 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\o:	rundll32.exe
File opened (read-only)	\??\p:	rundll32.exe
File opened (read-only)	\??\r:	rundll32.exe
File opened (read-only)	\??\b:	rundll32.exe
File opened (read-only)	\??\e:	rundll32.exe
File opened (read-only)	\??\h:	rundll32.exe
File opened (read-only)	\??\j:	rundll32.exe
File opened (read-only)	\??\n:	rundll32.exe
File opened (read-only)	\??\t:	rundll32.exe
File opened (read-only)	\??\v:	rundll32.exe
File opened (read-only)	\??\z:	rundll32.exe
File opened (read-only)	\??\l:	rundll32.exe
File opened (read-only)	\??\s:	rundll32.exe
File opened (read-only)	\??\u:	rundll32.exe
File opened (read-only)	\??\w:	rundll32.exe
File opened (read-only)	\??\x:	rundll32.exe
File opened (read-only)	\??\a:	rundll32.exe
File opened (read-only)	\??\i:	rundll32.exe
File opened (read-only)	\??\q:	rundll32.exe
File opened (read-only)	\??\y:	rundll32.exe
File opened (read-only)	\??\g:	rundll32.exe
File opened (read-only)	\??\k:	rundll32.exe
File opened (read-only)	\??\m:	rundll32.exe

Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

Bootkits write to the MBR to gain persistence at a level below the operating system.

bootkit persistence

Bootkit

T1542.003

description	ioc	Process
File opened for modification	\??\PHYSICALDRIVE0	rundll32.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
4760	rundll32.exe

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	\??\c:\Program Files\rppmm\pykvujh.dll	nnteo.exe
File opened for modification	\??\c:\Program Files\rppmm	nnteo.exe

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	rundll32.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	rundll32.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
4736	PING.EXE

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
4760	rundll32.exe
4760	rundll32.exe
4760	rundll32.exe
4760	rundll32.exe
4760	rundll32.exe
4760	rundll32.exe
4760	rundll32.exe
4760	rundll32.exe
4760	rundll32.exe
4760	rundll32.exe
4760	rundll32.exe
4760	rundll32.exe
4760	rundll32.exe
4760	rundll32.exe
4760	rundll32.exe
4760	rundll32.exe
4760	rundll32.exe
4760	rundll32.exe
4760	rundll32.exe
4760	rundll32.exe
4760	rundll32.exe
4760	rundll32.exe
4760	rundll32.exe
4760	rundll32.exe
4760	rundll32.exe
4760	rundll32.exe
4760	rundll32.exe
4760	rundll32.exe
4760	rundll32.exe
4760	rundll32.exe
4760	rundll32.exe
4760	rundll32.exe
4760	rundll32.exe
4760	rundll32.exe
4760	rundll32.exe
4760	rundll32.exe
4760	rundll32.exe
4760	rundll32.exe
4760	rundll32.exe
4760	rundll32.exe
4760	rundll32.exe
4760	rundll32.exe
4760	rundll32.exe
4760	rundll32.exe
4760	rundll32.exe
4760	rundll32.exe
4760	rundll32.exe
4760	rundll32.exe
4760	rundll32.exe
4760	rundll32.exe
4760	rundll32.exe
4760	rundll32.exe
4760	rundll32.exe
4760	rundll32.exe
4760	rundll32.exe
4760	rundll32.exe
4760	rundll32.exe
4760	rundll32.exe
4760	rundll32.exe
4760	rundll32.exe
4760	rundll32.exe
4760	rundll32.exe
4760	rundll32.exe
4760	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4760	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
3308	e384306ebe20848c5b9724e503507d3401d49ec00d2a9f5068334f8c8a8d9666.exe
4788	nnteo.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 3308 wrote to memory of 3564	3308	e384306ebe20848c5b9724e503507d3401d49ec00d2a9f5068334f8c8a8d9666.exe	82
PID 3308 wrote to memory of 3564	3308	e384306ebe20848c5b9724e503507d3401d49ec00d2a9f5068334f8c8a8d9666.exe	82
PID 3308 wrote to memory of 3564	3308	e384306ebe20848c5b9724e503507d3401d49ec00d2a9f5068334f8c8a8d9666.exe	82
PID 3564 wrote to memory of 4736	3564	cmd.exe	84
PID 3564 wrote to memory of 4736	3564	cmd.exe	84
PID 3564 wrote to memory of 4736	3564	cmd.exe	84
PID 3564 wrote to memory of 4788	3564	cmd.exe	85
PID 3564 wrote to memory of 4788	3564	cmd.exe	85
PID 3564 wrote to memory of 4788	3564	cmd.exe	85
PID 4788 wrote to memory of 4760	4788	nnteo.exe	86
PID 4788 wrote to memory of 4760	4788	nnteo.exe	86
PID 4788 wrote to memory of 4760	4788	nnteo.exe	86

C:\Users\Admin\AppData\Local\Temp\e384306ebe20848c5b9724e503507d3401d49ec00d2a9f5068334f8c8a8d9666.exe
"C:\Users\Admin\AppData\Local\Temp\e384306ebe20848c5b9724e503507d3401d49ec00d2a9f5068334f8c8a8d9666.exe"
1⤵
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3308
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\nnteo.exe "C:\Users\Admin\AppData\Local\Temp\e384306ebe20848c5b9724e503507d3401d49ec00d2a9f5068334f8c8a8d9666.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3564
- - C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1 -n 2
    3⤵
    - Runs ping.exe
    PID:4736
- - C:\Users\Admin\AppData\Local\Temp\nnteo.exe
    C:\Users\Admin\AppData\Local\Temp\\nnteo.exe "C:\Users\Admin\AppData\Local\Temp\e384306ebe20848c5b9724e503507d3401d49ec00d2a9f5068334f8c8a8d9666.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - Drops file in Program Files directory
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:4788
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\Program Files\rppmm\pykvujh.dll",Verify C:\Users\Admin\AppData\Local\Temp\nnteo.exe
      4⤵
      Blocklisted process makes network request
      Loads dropped DLL
      Adds Run key to start application
      Enumerates connected drives
      Writes to the Master Boot Record (MBR)
      Suspicious use of NtSetInformationThreadHideFromDebugger
      Checks processor information in registry
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:4760

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

Pre-OS Boot

T1542

Bootkit

T1542.003

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Pre-OS Boot

T1542

Bootkit

T1542.003

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

Remote System Discovery

T1018

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

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Downloads

nnteo.exe

Path C:\Users\Admin\AppData\Local\Temp\nnteo.exe
Size 406KB
SHA256 b1249ec1b988e12c00fdc89bdfcb35d3fee1c1f338f892f7e9de2bee645ed645
MD5 faa98ac96797d4f75c4616ede6ee8746
SHA1 01ffa5792b665bdf9f1a15cdbc9e370d790ba3d6
SHA512 6f3bdf6a837968a552b6a4fcc15a198c674771bb0c57d38f21d6879e5e01fdaa91bdfc398e4c4ee09a4ed45420366ccce99f154be55d18f53e289be6af75e465
SSDEEP 6144:3w9D91dOrcN3ZGXNYFNmIkYvUIelVjjVtGRyFH4Y:gtRfJcNYFNm8UhlZGseY
MD5 SHA1 SHA512 SSDEEP

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pykvujh.dll

Path \??\c:\Program Files\rppmm\pykvujh.dll
Size 228KB
SHA256 f7b593fb273194c616f08d93e69de741e8eadcaebca2e7ea53662d9b82c2ff9b
MD5 7cc4ea929650c86c861afdaac04a226e
SHA1 478be47f4086c54206451b1ea7990721852756c8
SHA512 33829a909ccdd6dbd9fc37474375cd2e27d33624144e629ce6a22f1361db5985987f9a11329695e44edbe3568f1e03108fab537eca92f01cfd6d2e40b01690fd
SSDEEP 6144:U1oEITTl5VCuHFrEy0wEOR7ndfAnVxERZ4CR3XaNf:5vVrHFrL05gdonVANp0
MD5 SHA1 SHA512 SSDEEP

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memory/3308-0-0x0000000000400000-0x0000000000464000-memory.dmp

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memory/3308-2-0x0000000000400000-0x0000000000464000-memory.dmp

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memory/4760-10-0x0000000010000000-0x0000000010080000-memory.dmp

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memory/4760-11-0x0000000010000000-0x0000000010080000-memory.dmp

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memory/4760-13-0x0000000010000000-0x0000000010080000-memory.dmp

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memory/4788-7-0x0000000000400000-0x0000000000464000-memory.dmp

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