87cd0c1f30ca3079911594ce5c5f5c527c3adbdcd1d8d2d7187fa1f9884f0a25

Analysis

max time kernel
143s
max time network
147s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
07/05/2024, 03:14

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General

Target
589868fd7df39cf040cf813672452720_NEAS.exe
Size 256KB
Sample240507-drah6afe9w
SHA256 87cd0c1f30ca3079911594ce5c5f5c527c3adbdcd1d8d2d7187fa1f9884f0a25
MD5 589868fd7df39cf040cf813672452720
SHA1 b9b0390d507256476cb0b6a4d409d74f09981da0
SHA512 ae287cd5d0ba21f745df28b7446f24fc58960f9ec4809148b749b9fc81809c08214aa167f49bd58b44078b1b1ec58a0de2ea199216cfe2a818f0835c073fabab
SSDEEP 6144:iyHJ4wTB5Ia9p+S0dSpTU+h/zquE1j57Lu6Bwc772t:ig4wTvoS05kzNEj7Lu6nu
MD5 SHA1 SHA512 SSDEEP

Score

7^/10

bootkit persistence spyware stealer

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
2912	hfuts.exe

Executes dropped EXE 2 IoCs

pid	Process
2912	hfuts.exe
4520	fje.exe

Loads dropped DLL 1 IoCs

pid	Process
4520	fje.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-1-5-21-2818691465-3043947619-2475182763-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Depend = "c:\\Program Files\\wtyxl\\fje.exe \"c:\\Program Files\\wtyxl\\fjehz.dll\",Compliance"	fje.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)	\??\n:	fje.exe
File opened (read-only)	\??\s:	fje.exe
File opened (read-only)	\??\u:	fje.exe
File opened (read-only)	\??\y:	fje.exe
File opened (read-only)	\??\h:	fje.exe
File opened (read-only)	\??\i:	fje.exe
File opened (read-only)	\??\k:	fje.exe
File opened (read-only)	\??\l:	fje.exe
File opened (read-only)	\??\b:	fje.exe
File opened (read-only)	\??\g:	fje.exe
File opened (read-only)	\??\x:	fje.exe
File opened (read-only)	\??\w:	fje.exe
File opened (read-only)	\??\a:	fje.exe
File opened (read-only)	\??\e:	fje.exe
File opened (read-only)	\??\j:	fje.exe
File opened (read-only)	\??\q:	fje.exe
File opened (read-only)	\??\t:	fje.exe
File opened (read-only)	\??\v:	fje.exe
File opened (read-only)	\??\z:	fje.exe
File opened (read-only)	\??\m:	fje.exe
File opened (read-only)	\??\o:	fje.exe
File opened (read-only)	\??\p:	fje.exe
File opened (read-only)	\??\r:	fje.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	fje.exe

Drops file in Program Files directory 4 IoCs

description	ioc	Process
File opened for modification	\??\c:\Program Files\wtyxl\fje.exe	hfuts.exe
File opened for modification	\??\c:\Program Files\wtyxl	hfuts.exe
File created	\??\c:\Program Files\wtyxl\fjehz.dll	hfuts.exe
File created	\??\c:\Program Files\wtyxl\fje.exe	hfuts.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 opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	fje.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	fje.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
732	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4520	fje.exe
4520	fje.exe
4520	fje.exe
4520	fje.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4520	fje.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1980	589868fd7df39cf040cf813672452720_NEAS.exe
2912	hfuts.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1980 wrote to memory of 3260	1980	589868fd7df39cf040cf813672452720_NEAS.exe	85
PID 1980 wrote to memory of 3260	1980	589868fd7df39cf040cf813672452720_NEAS.exe	85
PID 1980 wrote to memory of 3260	1980	589868fd7df39cf040cf813672452720_NEAS.exe	85
PID 3260 wrote to memory of 732	3260	cmd.exe	88
PID 3260 wrote to memory of 732	3260	cmd.exe	88
PID 3260 wrote to memory of 732	3260	cmd.exe	88
PID 3260 wrote to memory of 2912	3260	cmd.exe	90
PID 3260 wrote to memory of 2912	3260	cmd.exe	90
PID 3260 wrote to memory of 2912	3260	cmd.exe	90
PID 2912 wrote to memory of 4520	2912	hfuts.exe	92
PID 2912 wrote to memory of 4520	2912	hfuts.exe	92
PID 2912 wrote to memory of 4520	2912	hfuts.exe	92

C:\Users\Admin\AppData\Local\Temp\589868fd7df39cf040cf813672452720_NEAS.exe
"C:\Users\Admin\AppData\Local\Temp\589868fd7df39cf040cf813672452720_NEAS.exe"
1⤵
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1980
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\hfuts.exe "C:\Users\Admin\AppData\Local\Temp\589868fd7df39cf040cf813672452720_NEAS.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3260
- - C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1 -n 2
    3⤵
    - Runs ping.exe
    PID:732
- - C:\Users\Admin\AppData\Local\Temp\hfuts.exe
    C:\Users\Admin\AppData\Local\Temp\\hfuts.exe "C:\Users\Admin\AppData\Local\Temp\589868fd7df39cf040cf813672452720_NEAS.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - Drops file in Program Files directory
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:2912
  - - \??\c:\Program Files\wtyxl\fje.exe
      "c:\Program Files\wtyxl\fje.exe" "c:\Program Files\wtyxl\fjehz.dll",Compliance C:\Users\Admin\AppData\Local\Temp\hfuts.exe
      4⤵
      Executes dropped EXE
      Loads dropped DLL
      Adds Run key to start application
      Enumerates connected drives
      Writes to the Master Boot Record (MBR)
      Checks processor information in registry
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:4520

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

Replay Monitor

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Downloads

fje.exe

Path C:\Program Files\wtyxl\fje.exe
Size 60KB
SHA256 6cbe0e1f046b13b29bfa26f8b368281d2dda7eb9b718651d5856f22cc3e02910
MD5 889b99c52a60dd49227c5e485a016679
SHA1 8fa889e456aa646a4d0a4349977430ce5fa5e2d7
SHA512 08933106eaf338dd119c45cbf1f83e723aff77cc0f8d3fc84e36253b1eb31557a54211d1d5d1cb58958188e32064d451f6c66a24b3963cccd3de07299ab90641
SSDEEP 1536:H9ykYCTdiHQKrFXmw2RQln5IUmDjoX6+:HlMHprF2nRQln5I
MD5 SHA1 SHA512 SSDEEP

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hfuts.exe

Path C:\Users\Admin\AppData\Local\Temp\hfuts.exe
Size 256KB
SHA256 9b607f1da62559ea147ed88b8304aabffe34e43ae85183d44c578c37f29a2df3
MD5 cd5c092d3a7ec094712a25a04a1272ba
SHA1 b075f3bc65ebc1d4b2d2d72e88df01d4d7cf1a35
SHA512 fc8d8ed28ac9f0729c2361e6f0d8ac0f95eed8ff0126f701347cc525cdb9b8a026d3a835cddc592a1b015b83a30b3a5a4090330111399bdf2dfa7df18e056d4c
SSDEEP 6144:iyHJ4wTB5Ia9p+S0dSpTU+h/zquE1j57Lu6Bwc772o:ig4wTvoS05kzNEj7Lu6nx
MD5 SHA1 SHA512 SSDEEP

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fjehz.dll

Path \??\c:\Program Files\wtyxl\fjehz.dll
Size 179KB
SHA256 1f5de6132f84337e0bfdd1c080fea9cda66e4effc082a83b8734a817279440fe
MD5 5701cccdce33aed113fbe258f6681eb0
SHA1 081f73a990a4a4c7c6624dbcc9884a488c4142c2
SHA512 4cc4fe94ec98ca6de0b27b1490f3414f3b27d5c561207df23b0c9e85836af23f32dbb33b8b2c612fe06109edf86655877347541f7d48a70488f7e7fadb2fb5e5
SSDEEP 3072:EC5Wpfs98nVCWdKycHtld8VBt7NUalwXH9RqYzJabTYd3KIdj6+uFdi98pvO0hf3:ECOfQ8nVcycHrd8VBtBUa4HfRzJabT8w
MD5 SHA1 SHA512 SSDEEP

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memory/1980-0-0x0000000000400000-0x000000000044D01D-memory.dmp

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memory/1980-1-0x00000000001C0000-0x00000000001C1000-memory.dmp

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memory/1980-4-0x0000000000400000-0x000000000044D01D-memory.dmp

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memory/2912-16-0x0000000000400000-0x000000000044D01D-memory.dmp

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memory/2912-9-0x00000000001C0000-0x00000000001C1000-memory.dmp

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memory/2912-8-0x0000000000400000-0x000000000044D01D-memory.dmp

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memory/4520-19-0x0000000010000000-0x000000001004F000-memory.dmp

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memory/4520-20-0x0000000001350000-0x0000000001351000-memory.dmp

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memory/4520-21-0x0000000010000000-0x000000001004F000-memory.dmp

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memory/4520-23-0x0000000010000000-0x000000001004F000-memory.dmp

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memory/4520-25-0x0000000010000000-0x000000001004F000-memory.dmp

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memory/4520-30-0x0000000010000000-0x000000001004F000-memory.dmp

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