0b90c40e938c22cb9bb9c9e8cf03d215b2e9e796d3e2f278a03c0438fe1a6597

Analysis

max time kernel
175s
max time network
175s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
09/01/2024, 17:07

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General

Target

4ee02d0aaa6c5973e34d05d0d6a7f19c.exe
Size

519KB
MD5

4ee02d0aaa6c5973e34d05d0d6a7f19c
SHA1

1d04a6a5db7e0fa2c06b3f2b4554aeabd9f78c68
SHA256

0b90c40e938c22cb9bb9c9e8cf03d215b2e9e796d3e2f278a03c0438fe1a6597
SHA512

059be49389131afcee3011f1821ab6f83ed52c6d11dec5caebb4938910fb851b782ad7614e90102332c48726c1d4cd04f426bf7dbce1cc8f6893977a6fa41bab
SSDEEP

12288:yo5r7ZZ3RuAEEkCts0FNaWHcE+fcP1wb8HnAB88ZFg:yo5r7ZZ3d2mNa1H8RH/8U

Score

10^/10

aspackv2 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\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "Explorer.exe C:\\Windows\\system32\\fservice.exe"	4ee02d0aaa6c5973e34d05d0d6a7f19c.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "Explorer.exe C:\\Windows\\system32\\fservice.exe"	services.exe

Adds policy Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\DirectX For Microsoft® Windows = "C:\\Windows\\system32\\fservice.exe"	services.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	4ee02d0aaa6c5973e34d05d0d6a7f19c.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\DirectX For Microsoft® Windows = "C:\\Windows\\system32\\fservice.exe"	4ee02d0aaa6c5973e34d05d0d6a7f19c.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	services.exe

Modifies Installed Components in the registry 2 TTPs 5 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{5Y99AE78-58TT-11dW-BE53-Y67078979Y}	4ee02d0aaa6c5973e34d05d0d6a7f19c.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{5Y99AE78-58TT-11dW-BE53-Y67078979Y}\	4ee02d0aaa6c5973e34d05d0d6a7f19c.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{5Y99AE78-58TT-11dW-BE53-Y67078979Y}\StubPath = "C:\\Windows\\system\\sservice.exe"	4ee02d0aaa6c5973e34d05d0d6a7f19c.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{5Y99AE78-58TT-11dW-BE53-Y67078979Y}\	services.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{5Y99AE78-58TT-11dW-BE53-Y67078979Y}\StubPath = "C:\\Windows\\system\\sservice.exe"	services.exe

ASPack v2.12-2.42 1 IoCs

Detects executables packed with ASPack v2.12-2.42

aspackv2

resource	yara_rule
behavioral2/files/0x000600000002321f-45.dat	aspack_v212_v242

Executes dropped EXE 2 IoCs

pid	Process
3108	fservice.exe
4768	services.exe

Loads dropped DLL 3 IoCs

pid	Process
4768	services.exe
4768	services.exe
4768	services.exe

Modifies WinLogon 2 TTPs 2 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\	4ee02d0aaa6c5973e34d05d0d6a7f19c.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\	services.exe

Drops file in System32 directory 7 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\winkey.dll	services.exe
File created	C:\Windows\SysWOW64\reginv.dll	services.exe
File created	C:\Windows\SysWOW64\fservice.exe	services.exe
File created	C:\Windows\SysWOW64\fservice.exe	4ee02d0aaa6c5973e34d05d0d6a7f19c.exe
File opened for modification	C:\Windows\SysWOW64\fservice.exe	4ee02d0aaa6c5973e34d05d0d6a7f19c.exe
File created	C:\Windows\SysWOW64\fservice.exe	fservice.exe
File opened for modification	C:\Windows\SysWOW64\fservice.exe	fservice.exe

Drops file in Windows directory 7 IoCs

description	ioc	Process
File opened for modification	C:\Windows\services.exe	fservice.exe
File created	C:\Windows\system\sservice.exe	fservice.exe
File opened for modification	C:\Windows\system\sservice.exe	fservice.exe
File created	C:\Windows\system\sservice.exe	services.exe
File created	C:\Windows\system\sservice.exe	4ee02d0aaa6c5973e34d05d0d6a7f19c.exe
File opened for modification	C:\Windows\system\sservice.exe	4ee02d0aaa6c5973e34d05d0d6a7f19c.exe
File created	C:\Windows\services.exe	fservice.exe

Runs net.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
4740	4ee02d0aaa6c5973e34d05d0d6a7f19c.exe
4740	4ee02d0aaa6c5973e34d05d0d6a7f19c.exe
3108	fservice.exe
3108	fservice.exe
4768	services.exe
4768	services.exe
4768	services.exe
4768	services.exe
4768	services.exe
4768	services.exe
4768	services.exe
4768	services.exe
4768	services.exe
4768	services.exe
4768	services.exe
4768	services.exe
4768	services.exe
4768	services.exe
4768	services.exe
4768	services.exe
4768	services.exe
4768	services.exe
4768	services.exe
4768	services.exe
4768	services.exe
4768	services.exe
4768	services.exe
4768	services.exe
4768	services.exe
4768	services.exe
4768	services.exe
4768	services.exe
4768	services.exe
4768	services.exe
4768	services.exe
4768	services.exe
4768	services.exe
4768	services.exe
4768	services.exe
4768	services.exe
4768	services.exe
4768	services.exe
4768	services.exe
4768	services.exe
4768	services.exe
4768	services.exe
4768	services.exe
4768	services.exe
4768	services.exe
4768	services.exe
4768	services.exe
4768	services.exe
4768	services.exe
4768	services.exe
4768	services.exe
4768	services.exe
4768	services.exe
4768	services.exe
4768	services.exe
4768	services.exe
4768	services.exe
4768	services.exe
4768	services.exe
4768	services.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4768	services.exe
4768	services.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 4740 wrote to memory of 3108	4740	4ee02d0aaa6c5973e34d05d0d6a7f19c.exe	96
PID 4740 wrote to memory of 3108	4740	4ee02d0aaa6c5973e34d05d0d6a7f19c.exe	96
PID 4740 wrote to memory of 3108	4740	4ee02d0aaa6c5973e34d05d0d6a7f19c.exe	96
PID 4740 wrote to memory of 1644	4740	4ee02d0aaa6c5973e34d05d0d6a7f19c.exe	95
PID 4740 wrote to memory of 1644	4740	4ee02d0aaa6c5973e34d05d0d6a7f19c.exe	95
PID 4740 wrote to memory of 1644	4740	4ee02d0aaa6c5973e34d05d0d6a7f19c.exe	95
PID 3108 wrote to memory of 4768	3108	fservice.exe	100
PID 3108 wrote to memory of 4768	3108	fservice.exe	100
PID 3108 wrote to memory of 4768	3108	fservice.exe	100
PID 4768 wrote to memory of 492	4768	services.exe	109
PID 4768 wrote to memory of 492	4768	services.exe	109
PID 4768 wrote to memory of 492	4768	services.exe	109
PID 4768 wrote to memory of 2200	4768	services.exe	106
PID 4768 wrote to memory of 2200	4768	services.exe	106
PID 4768 wrote to memory of 2200	4768	services.exe	106
PID 2200 wrote to memory of 4344	2200	NET.exe	107
PID 2200 wrote to memory of 4344	2200	NET.exe	107
PID 2200 wrote to memory of 4344	2200	NET.exe	107
PID 492 wrote to memory of 2196	492	NET.exe	108
PID 492 wrote to memory of 2196	492	NET.exe	108
PID 492 wrote to memory of 2196	492	NET.exe	108

C:\Users\Admin\AppData\Local\Temp\4ee02d0aaa6c5973e34d05d0d6a7f19c.exe
"C:\Users\Admin\AppData\Local\Temp\4ee02d0aaa6c5973e34d05d0d6a7f19c.exe"
1⤵
- Modifies WinLogon for persistence
- Adds policy Run key to start application
- Modifies Installed Components in the registry
- Modifies WinLogon
- Drops file in System32 directory
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4740
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\4ee02d0aaa6c5973e34d05d0d6a7f19c.exe.bat
  2⤵
  PID:1644
- C:\Windows\SysWOW64\fservice.exe
  C:\Windows\system32\fservice.exe
  2⤵
  - Executes dropped EXE
  - Drops file in System32 directory
  - Drops file in Windows directory
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:3108
- - C:\Windows\services.exe
    C:\Windows\services.exe -XP
    3⤵
    - Modifies WinLogon for persistence
    - Adds policy Run key to start application
    - Modifies Installed Components in the registry
    - Executes dropped EXE
    - Loads dropped DLL
    - Modifies WinLogon
    - Drops file in System32 directory
    - Drops file in Windows directory
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:4768
  - - C:\Windows\SysWOW64\NET.exe
      NET STOP navapsvc
      4⤵
      Suspicious use of WriteProcessMemory
      PID:2200
    - - C:\Windows\SysWOW64\net1.exe
        
        C:\Windows\system32\net1 STOP navapsvc
        5⤵
        
        PID:4344
  - - C:\Windows\SysWOW64\NET.exe
      NET STOP srservice
      4⤵
      Suspicious use of WriteProcessMemory
      PID:492

C:\Windows\SysWOW64\net1.exe
C:\Windows\system32\net1 STOP srservice
1⤵
PID:2196

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\4ee02d0aaa6c5973e34d05d0d6a7f19c.exe.bat

Filesize
133B

MD5
5d84397466f8a032857aab5e6e777835

SHA1
5f38d388701c1a6f8e4450a933a08c948014be12

SHA256
0315c1c07b2d2c1c0443621d2c2bc61cc17df79cbac8a9592adc5a0f333eaa1c

SHA512
43ee4b7733ca8d1c924ac3029fddce69c18d766509d8942c009a27eb5dbd8b6c50db9e6e75a8dbc9f7887e5f851de79db56ff4112e0dc8a9592e1ef64b0966f5

Download Submit
C:\Windows\SysWOW64\fservice.exe

Filesize
305KB

MD5
817b23cb5b6e4a5a743bab6bcf7e1201

SHA1
9f116b726b8e2d3cd4f7eafcb1e97a6fd5ae1360

SHA256
9166594ee566a9c380e228008c115fed0c1efd12d068889c57268ecc28f74896

SHA512
0b1e5bff71786832472daf72130521c562e8ff8909d9416987fc24d24f0f8a459ccd2dbdf0184274c41c4dd1cf5d464524b97c9e708474207c8a2e9dc5b100b3

Download Submit
C:\Windows\SysWOW64\fservice.exe

Filesize
342KB

MD5
7ed77990ea8024b8f34c436484bf5109

SHA1
90019392a1411350127d41900023189593bb835d

SHA256
95dbc8dd0745e08fd148766c357b1db40335023fac745d05ffe46ec601aa3ba7

SHA512
c9850c438dd57ddf3afccd2bcbf6247b7fb1d9dd4ce637b03af0b9fc6c33582851430b59bc6cb7cf3395974c77eea898789f805eed94b1435c5129e565fe3ad6

Download Submit
C:\Windows\SysWOW64\fservice.exe

Filesize
89KB

MD5
d44dd9f1afc229119f460475f79ce1b4

SHA1
e8b0c3a8cf1fea56ed90efe25857a1f952994c6a

SHA256
ae853c948620c2fdf63eb42a89617029a5e04922f9d7f051c5afdcec5b2d18fe

SHA512
ae161235f4836e70ee80661ff297158dd3a88cdd79a286fa7cb6054a51703a4ef563e72dde500130a36e9c8d050580bef7104f55888fcd7a9f4dd21a216805d4

Download Submit
C:\Windows\SysWOW64\reginv.dll

Filesize
36KB

MD5
562e0d01d6571fa2251a1e9f54c6cc69

SHA1
83677ad3bc630aa6327253c7b3deffbd4a8ce905

SHA256
c5b1d800c86d550c0b68c57c0d9911c1dd21df9e5e37e9e7bc032b5e66fdebe6

SHA512
166e132432eca24061f7e7d0c58c0b286e971ae2bc50f7c890b7707dd5dede19fcd83a5f79b6fd3f93dd691e07ad9bc1bd05fe82ccaade1610282188571585ea

Download Submit
C:\Windows\SysWOW64\winkey.dll

Filesize
13KB

MD5
b4c72da9fd1a0dcb0698b7da97daa0cd

SHA1
b25a79e8ea4c723c58caab83aed6ea48de7ed759

SHA256
45d266269634ba2de70f179a26d7224111e677e66b38dff2802851b71ce4458f

SHA512
f5f184416c5381d275bc093c9275e9fdb35c58e2c401d188aef097950013de6e43269da5d4dd5e7baea34735bd7de664d15fe487b2292fd66926c9845b0cd066

Download Submit
C:\Windows\services.exe

Filesize
312KB

MD5
f38ce37681a00fe8a7a256bc81600863

SHA1
c4db256a34ebc3fcf25f391ecba82f9549e87a9c

SHA256
09030eba6aa9d8ee5edd4ee98d9da7c573e77c044cc2f8254981376b71fd6f11

SHA512
034afc5693d63cd976f2241c81c4a77792b5152126874a0a7bf0f1dc9f424365fad86efaa5883f9fa0a87e928bc236eeb23f666a2c160743f42c68534269eaad

Download Submit
C:\Windows\system\sservice.exe

Filesize
519KB

MD5
4ee02d0aaa6c5973e34d05d0d6a7f19c

SHA1
1d04a6a5db7e0fa2c06b3f2b4554aeabd9f78c68

SHA256
0b90c40e938c22cb9bb9c9e8cf03d215b2e9e796d3e2f278a03c0438fe1a6597

SHA512
059be49389131afcee3011f1821ab6f83ed52c6d11dec5caebb4938910fb851b782ad7614e90102332c48726c1d4cd04f426bf7dbce1cc8f6893977a6fa41bab

Download Submit
memory/3108-37-0x00000000009D0000-0x00000000009FD000-memory.dmp

Filesize
180KB

Download
memory/3108-35-0x0000000002110000-0x0000000002111000-memory.dmp

Filesize
4KB

Download
memory/3108-15-0x00000000009D0000-0x00000000009FD000-memory.dmp

Filesize
180KB

Download
memory/3108-22-0x0000000000400000-0x0000000000612000-memory.dmp

Filesize
2.1MB

Download
memory/3108-24-0x00000000009D0000-0x00000000009FD000-memory.dmp

Filesize
180KB

Download
memory/3108-30-0x0000000000400000-0x0000000000612000-memory.dmp

Filesize
2.1MB

Download
memory/3108-32-0x00000000024B0000-0x00000000024B2000-memory.dmp

Filesize
8KB

Download
memory/3108-23-0x0000000000400000-0x0000000000612000-memory.dmp

Filesize
2.1MB

Download
memory/3108-40-0x0000000000400000-0x0000000000612000-memory.dmp

Filesize
2.1MB

Download
memory/4740-3-0x0000000000400000-0x0000000000612000-memory.dmp

Filesize
2.1MB

Download
memory/4740-2-0x0000000000400000-0x0000000000612000-memory.dmp

Filesize
2.1MB

Download
memory/4740-1-0x00000000022A0000-0x00000000022CD000-memory.dmp

Filesize
180KB

Download
memory/4740-0-0x0000000000400000-0x0000000000612000-memory.dmp

Filesize
2.1MB

Download
memory/4740-5-0x0000000000400000-0x0000000000612000-memory.dmp

Filesize
2.1MB

Download
memory/4740-4-0x00000000022A0000-0x00000000022CD000-memory.dmp

Filesize
180KB

Download
memory/4740-18-0x00000000022A0000-0x00000000022CD000-memory.dmp

Filesize
180KB

Download
memory/4740-6-0x0000000002670000-0x0000000002672000-memory.dmp

Filesize
8KB

Download
memory/4740-7-0x0000000002220000-0x0000000002221000-memory.dmp

Filesize
4KB

Download
memory/4740-21-0x0000000000400000-0x0000000000612000-memory.dmp

Filesize
2.1MB

Download
memory/4768-51-0x0000000010000000-0x000000001000B000-memory.dmp

Filesize
44KB

Download
memory/4768-36-0x00000000007D0000-0x00000000007FD000-memory.dmp

Filesize
180KB

Download
memory/4768-39-0x0000000000400000-0x0000000000612000-memory.dmp

Filesize
2.1MB

Download
memory/4768-50-0x0000000000750000-0x0000000000751000-memory.dmp

Filesize
4KB

Download
memory/4768-49-0x0000000003CB0000-0x0000000003CB2000-memory.dmp

Filesize
8KB

Download
memory/4768-47-0x0000000000400000-0x0000000000612000-memory.dmp

Filesize
2.1MB

Download
memory/4768-43-0x00000000007D0000-0x00000000007FD000-memory.dmp

Filesize
180KB

Download
memory/4768-42-0x0000000000400000-0x0000000000612000-memory.dmp

Filesize
2.1MB

Download
memory/4768-41-0x0000000000400000-0x0000000000612000-memory.dmp

Filesize
2.1MB

Download
memory/4768-60-0x00000000007D0000-0x00000000007FD000-memory.dmp

Filesize
180KB

Download
memory/4768-63-0x0000000000400000-0x0000000000612000-memory.dmp

Filesize
2.1MB

Download
memory/4768-64-0x0000000000400000-0x0000000000612000-memory.dmp

Filesize
2.1MB

Download
memory/4768-65-0x0000000000750000-0x0000000000751000-memory.dmp

Filesize
4KB

Download