54015220df3991400f7c48523f83fb59c6a45ee2a719bcfd0d00ade92eb86921

Analysis

max time kernel
149s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
08/05/2024, 14:07

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General

Target
d4790d90a100abf80c02e4e13e7e4a60_NEIKI.exe
Size 142KB
Sample240508-re4hcsae98
SHA256 54015220df3991400f7c48523f83fb59c6a45ee2a719bcfd0d00ade92eb86921
MD5 d4790d90a100abf80c02e4e13e7e4a60
SHA1 9ab961da5d16efb00ac6ff8791bef0df5215cb96
SHA512 57a687ed7a58e93d37e546b324025b3bf32abe19c166526e8e0a2aab0bb06d1a39108d8a9aef59cd86108c5f508b24b67df82055a8bbcf83e834cdef93668693
SSDEEP 3072:gOuCgsQ+rTjPQopsX2VEAhHMsuJmQWZmvwEfpG:OYPVg2nhHvQWZ74pG
MD5 SHA1 SHA512 SSDEEP

Score

7^/10

bootkit persistence spyware stealer

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
3424	fyeyv.exe

Executes dropped EXE 2 IoCs

pid	Process
3424	fyeyv.exe
3404	rcy.exe

Loads dropped DLL 1 IoCs

pid	Process
3404	rcy.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-1-5-21-3558294865-3673844354-2255444939-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\EM = "c:\\Program Files\\frgdoda\\rcy.exe \"c:\\Program Files\\frgdoda\\rcyia.dll\",ExitModule"	rcy.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)	\??\l:	rcy.exe
File opened (read-only)	\??\t:	rcy.exe
File opened (read-only)	\??\y:	rcy.exe
File opened (read-only)	\??\j:	rcy.exe
File opened (read-only)	\??\k:	rcy.exe
File opened (read-only)	\??\o:	rcy.exe
File opened (read-only)	\??\p:	rcy.exe
File opened (read-only)	\??\r:	rcy.exe
File opened (read-only)	\??\x:	rcy.exe
File opened (read-only)	\??\h:	rcy.exe
File opened (read-only)	\??\m:	rcy.exe
File opened (read-only)	\??\a:	rcy.exe
File opened (read-only)	\??\u:	rcy.exe
File opened (read-only)	\??\g:	rcy.exe
File opened (read-only)	\??\i:	rcy.exe
File opened (read-only)	\??\n:	rcy.exe
File opened (read-only)	\??\q:	rcy.exe
File opened (read-only)	\??\s:	rcy.exe
File opened (read-only)	\??\v:	rcy.exe
File opened (read-only)	\??\b:	rcy.exe
File opened (read-only)	\??\e:	rcy.exe
File opened (read-only)	\??\w:	rcy.exe
File opened (read-only)	\??\z:	rcy.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	rcy.exe

Drops file in Program Files directory 4 IoCs

description	ioc	Process
File opened for modification	\??\c:\Program Files\frgdoda	fyeyv.exe
File created	\??\c:\Program Files\frgdoda\rcyia.dll	fyeyv.exe
File created	\??\c:\Program Files\frgdoda\rcy.exe	fyeyv.exe
File opened for modification	\??\c:\Program Files\frgdoda\rcy.exe	fyeyv.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	rcy.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	rcy.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
508	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3404	rcy.exe
3404	rcy.exe
3404	rcy.exe
3404	rcy.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3404	rcy.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4752	d4790d90a100abf80c02e4e13e7e4a60_NEIKI.exe
3424	fyeyv.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 4752 wrote to memory of 1948	4752	d4790d90a100abf80c02e4e13e7e4a60_NEIKI.exe	82
PID 4752 wrote to memory of 1948	4752	d4790d90a100abf80c02e4e13e7e4a60_NEIKI.exe	82
PID 4752 wrote to memory of 1948	4752	d4790d90a100abf80c02e4e13e7e4a60_NEIKI.exe	82
PID 1948 wrote to memory of 508	1948	cmd.exe	84
PID 1948 wrote to memory of 508	1948	cmd.exe	84
PID 1948 wrote to memory of 508	1948	cmd.exe	84
PID 1948 wrote to memory of 3424	1948	cmd.exe	85
PID 1948 wrote to memory of 3424	1948	cmd.exe	85
PID 1948 wrote to memory of 3424	1948	cmd.exe	85
PID 3424 wrote to memory of 3404	3424	fyeyv.exe	86
PID 3424 wrote to memory of 3404	3424	fyeyv.exe	86
PID 3424 wrote to memory of 3404	3424	fyeyv.exe	86

C:\Users\Admin\AppData\Local\Temp\d4790d90a100abf80c02e4e13e7e4a60_NEIKI.exe
"C:\Users\Admin\AppData\Local\Temp\d4790d90a100abf80c02e4e13e7e4a60_NEIKI.exe"
1⤵
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4752
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\fyeyv.exe "C:\Users\Admin\AppData\Local\Temp\d4790d90a100abf80c02e4e13e7e4a60_NEIKI.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1948
- - C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1 -n 2
    3⤵
    - Runs ping.exe
    PID:508
- - C:\Users\Admin\AppData\Local\Temp\fyeyv.exe
    C:\Users\Admin\AppData\Local\Temp\\fyeyv.exe "C:\Users\Admin\AppData\Local\Temp\d4790d90a100abf80c02e4e13e7e4a60_NEIKI.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - Drops file in Program Files directory
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:3424
  - - \??\c:\Program Files\frgdoda\rcy.exe
      "c:\Program Files\frgdoda\rcy.exe" "c:\Program Files\frgdoda\rcyia.dll",ExitModule C:\Users\Admin\AppData\Local\Temp\fyeyv.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:3404

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

rcy.exe

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

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fyeyv.exe

Path C:\Users\Admin\AppData\Local\Temp\fyeyv.exe
Size 142KB
SHA256 eaced59e4ff774ab05e826b2fcaa9c13ba6465313720754a267f14ec0b1127d5
MD5 af658d79e035bfce90d2a3e2d80a6b2d
SHA1 26239b407d32ebe68fd59a1f168120243f275496
SHA512 a41dfcd729a3ffbe14622cd7680c3d70b082b6681743f8e0e5ccbd75497a3dcca629c1f0a3dffdfbeafe3f63f6bceb9b5197f0f359f422edbee60b14e95ff63c
SSDEEP 3072:gOuCgsQ+rTjPQopsX2VEAhHMsuJmQWZmvwEfp0:OYPVg2nhHvQWZ74p0
MD5 SHA1 SHA512 SSDEEP

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rcyia.dll

Path \??\c:\Program Files\frgdoda\rcyia.dll
Size 81KB
SHA256 ddf2b2a9965f10498b4ab12c50dd6360018baa71c20c7b7f7d32209329504c58
MD5 18f89373f3122c83ef6cbca079c04d97
SHA1 a5ab4c75948575235c96d9c58f854f184096578c
SHA512 2de05fd414be8385c732507ed2dd3cc50f252c86b5375e3c8f785bd1b82ff337e40a429fdc9deb6515947c54e30f1ff34c4e618f90cac60d4ce4c20a42c6a76a
SSDEEP 1536:lCbhjW8rhK4rg6Z1qdkMB5eIO292XbNTx9sy8ifyXxyk3D3Wfn25B76Ps06DcBqS:QbhjWfe/+dkg4ZfWiKAC3W67E5nBqS
MD5 SHA1 SHA512 SSDEEP

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memory/3404-19-0x0000000010036000-0x000000001004D000-memory.dmp

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memory/3404-14-0x0000000010000000-0x000000001004D000-memory.dmp

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memory/3404-15-0x0000000010000000-0x000000001004D000-memory.dmp

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memory/3404-20-0x0000000010000000-0x000000001004D000-memory.dmp

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memory/3404-21-0x0000000010000000-0x000000001004D000-memory.dmp

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memory/3404-23-0x0000000010000000-0x000000001004D000-memory.dmp

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memory/3404-25-0x0000000010000000-0x000000001004D000-memory.dmp

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memory/3424-10-0x0000000000400000-0x000000000045868F-memory.dmp

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memory/4752-2-0x0000000000400000-0x000000000045868F-memory.dmp

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memory/4752-0-0x0000000000400000-0x000000000045868F-memory.dmp

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