c46805d51bfee760e479a708d5b3a0d1e089396103d01f0693c3fc5edbd9760b

Analysis

max time kernel
183s
max time network
196s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
28/10/2022, 18:12

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General

Target

c46805d51bfee760e479a708d5b3a0d1e089396103d01f0693c3fc5edbd9760b.exe
Size

342KB
MD5

0bf09fb0d1755a016eede7ac78b1d94b
SHA1

1fc39f7cf35a1c17f06b1e5709423b51c3520594
SHA256

c46805d51bfee760e479a708d5b3a0d1e089396103d01f0693c3fc5edbd9760b
SHA512

120d11133bea049fb9e9916a199ef6eadfb828f8f420d068c5a8a3ada16c8faa82abbe344fa1f45a38dae9b25d1369e3fc2a53f1323fc5aea283b885d121577b
SSDEEP

6144:ARqmpp+amNOGokzLyM9tsLAitQo6tzOKkzIt8gKyfjxfR9D2j4yOWYbCyQ:UqmpplpGoGL3etQoMiXM8gxf/Sj4y0Q

Score

10^/10

aspackv2 persistence upx

Malware Config

Signatures

Modifies WinLogon for persistence 2 TTPs 2 IoCs

persistence

Winlogon Helper DLL

T1004

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"	c46805d51bfee760e479a708d5b3a0d1e089396103d01f0693c3fc5edbd9760b.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "Explorer.exe C:\\Windows\\system32\\fservice.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/0x000c00000002171d-141.dat	aspack_v212_v242

Adds policy Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

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	c46805d51bfee760e479a708d5b3a0d1e089396103d01f0693c3fc5edbd9760b.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\DirectX For Microsoft® Windows = "C:\\Windows\\system32\\fservice.exe"	c46805d51bfee760e479a708d5b3a0d1e089396103d01f0693c3fc5edbd9760b.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	services.exe

Executes dropped EXE 2 IoCs

pid	Process
3376	fservice.exe
3620	services.exe

Modifies Installed Components in the registry 2 TTPs 5 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{5Y99AE78-58TT-11dW-BE53-Y67078979Y}	c46805d51bfee760e479a708d5b3a0d1e089396103d01f0693c3fc5edbd9760b.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{5Y99AE78-58TT-11dW-BE53-Y67078979Y}\	c46805d51bfee760e479a708d5b3a0d1e089396103d01f0693c3fc5edbd9760b.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{5Y99AE78-58TT-11dW-BE53-Y67078979Y}\StubPath = "C:\\Windows\\system\\sservice.exe"	c46805d51bfee760e479a708d5b3a0d1e089396103d01f0693c3fc5edbd9760b.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

UPX packed file 12 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/2800-132-0x0000000000400000-0x00000000005FC000-memory.dmp	upx
behavioral2/memory/2800-133-0x0000000000400000-0x00000000005FC000-memory.dmp	upx
behavioral2/files/0x000300000001e64d-135.dat	upx
behavioral2/files/0x000300000001e64d-136.dat	upx
behavioral2/files/0x000b00000002171d-137.dat	upx
behavioral2/files/0x0002000000021b42-139.dat	upx
behavioral2/files/0x0002000000021b42-140.dat	upx
behavioral2/memory/3376-142-0x0000000000400000-0x00000000005FC000-memory.dmp	upx
behavioral2/memory/3620-143-0x0000000000400000-0x00000000005FC000-memory.dmp	upx
behavioral2/memory/3376-155-0x0000000000400000-0x00000000005FC000-memory.dmp	upx
behavioral2/memory/2800-157-0x0000000000400000-0x00000000005FC000-memory.dmp	upx
behavioral2/memory/3620-159-0x0000000000400000-0x00000000005FC000-memory.dmp	upx

Loads dropped DLL 5 IoCs

pid	Process
3620	services.exe
3620	services.exe
3620	services.exe
3376	fservice.exe
2800	c46805d51bfee760e479a708d5b3a0d1e089396103d01f0693c3fc5edbd9760b.exe

Unexpected DNS network traffic destination 4 IoCs

Network traffic to other servers than the configured DNS servers was detected on the DNS port.

description	ioc
Destination IP	151.164.23.201
Destination IP	95.0.242.21
Destination IP	155.223.2.2
Destination IP	193.255.49.56

Modifies WinLogon 2 TTPs 2 IoCs

persistence

Winlogon Helper DLL

T1004

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\	c46805d51bfee760e479a708d5b3a0d1e089396103d01f0693c3fc5edbd9760b.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 opened for modification	C:\Windows\SysWOW64\fservice.exe	c46805d51bfee760e479a708d5b3a0d1e089396103d01f0693c3fc5edbd9760b.exe
File created	C:\Windows\SysWOW64\fservice.exe	fservice.exe
File opened for modification	C:\Windows\SysWOW64\fservice.exe	fservice.exe
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	c46805d51bfee760e479a708d5b3a0d1e089396103d01f0693c3fc5edbd9760b.exe

Drops file in Windows directory 7 IoCs

description	ioc	Process
File created	C:\Windows\system\sservice.exe	c46805d51bfee760e479a708d5b3a0d1e089396103d01f0693c3fc5edbd9760b.exe
File opened for modification	C:\Windows\system\sservice.exe	c46805d51bfee760e479a708d5b3a0d1e089396103d01f0693c3fc5edbd9760b.exe
File created	C:\Windows\services.exe	fservice.exe
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

Runs net.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
3620	services.exe
3620	services.exe
3620	services.exe
3620	services.exe
3620	services.exe
3620	services.exe
3620	services.exe
3620	services.exe
3620	services.exe
3620	services.exe
3620	services.exe
3620	services.exe
3620	services.exe
3620	services.exe
3620	services.exe
3620	services.exe
3620	services.exe
3620	services.exe
3620	services.exe
3620	services.exe
3620	services.exe
3620	services.exe
3620	services.exe
3620	services.exe
3620	services.exe
3620	services.exe
3620	services.exe
3620	services.exe
3620	services.exe
3620	services.exe
3620	services.exe
3620	services.exe
3620	services.exe
3620	services.exe
3620	services.exe
3620	services.exe
3620	services.exe
3620	services.exe
3620	services.exe
3620	services.exe
3620	services.exe
3620	services.exe
3620	services.exe
3620	services.exe
3620	services.exe
3620	services.exe
3620	services.exe
3620	services.exe
3620	services.exe
3620	services.exe
3620	services.exe
3620	services.exe
3620	services.exe
3620	services.exe
3620	services.exe
3620	services.exe
3620	services.exe
3620	services.exe
3620	services.exe
3620	services.exe
3620	services.exe
3620	services.exe
3620	services.exe
3620	services.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
3620	services.exe
3620	services.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 2800 wrote to memory of 3376	2800	c46805d51bfee760e479a708d5b3a0d1e089396103d01f0693c3fc5edbd9760b.exe	84
PID 2800 wrote to memory of 3376	2800	c46805d51bfee760e479a708d5b3a0d1e089396103d01f0693c3fc5edbd9760b.exe	84
PID 2800 wrote to memory of 3376	2800	c46805d51bfee760e479a708d5b3a0d1e089396103d01f0693c3fc5edbd9760b.exe	84
PID 3376 wrote to memory of 3620	3376	fservice.exe	85
PID 3376 wrote to memory of 3620	3376	fservice.exe	85
PID 3376 wrote to memory of 3620	3376	fservice.exe	85
PID 3620 wrote to memory of 4356	3620	services.exe	86
PID 3620 wrote to memory of 4356	3620	services.exe	86
PID 3620 wrote to memory of 4356	3620	services.exe	86
PID 3620 wrote to memory of 3776	3620	services.exe	87
PID 3620 wrote to memory of 3776	3620	services.exe	87
PID 3620 wrote to memory of 3776	3620	services.exe	87
PID 3776 wrote to memory of 4040	3776	NET.exe	91
PID 3776 wrote to memory of 4040	3776	NET.exe	91
PID 3776 wrote to memory of 4040	3776	NET.exe	91
PID 4356 wrote to memory of 4504	4356	NET.exe	90
PID 4356 wrote to memory of 4504	4356	NET.exe	90
PID 4356 wrote to memory of 4504	4356	NET.exe	90
PID 2800 wrote to memory of 4328	2800	c46805d51bfee760e479a708d5b3a0d1e089396103d01f0693c3fc5edbd9760b.exe	92
PID 2800 wrote to memory of 4328	2800	c46805d51bfee760e479a708d5b3a0d1e089396103d01f0693c3fc5edbd9760b.exe	92
PID 2800 wrote to memory of 4328	2800	c46805d51bfee760e479a708d5b3a0d1e089396103d01f0693c3fc5edbd9760b.exe	92

C:\Users\Admin\AppData\Local\Temp\c46805d51bfee760e479a708d5b3a0d1e089396103d01f0693c3fc5edbd9760b.exe
"C:\Users\Admin\AppData\Local\Temp\c46805d51bfee760e479a708d5b3a0d1e089396103d01f0693c3fc5edbd9760b.exe"
1⤵
- Modifies WinLogon for persistence
- Adds policy Run key to start application
- Modifies Installed Components in the registry
- Loads dropped DLL
- Modifies WinLogon
- Drops file in System32 directory
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:2800
- C:\Windows\SysWOW64\fservice.exe
  C:\Windows\system32\fservice.exe
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in System32 directory
  - Drops file in Windows directory
  - Suspicious use of WriteProcessMemory
  PID:3376
- - C:\Windows\services.exe
    C:\Windows\services.exe -XP
    3⤵
    - Modifies WinLogon for persistence
    - Adds policy Run key to start application
    - Executes dropped EXE
    - Modifies Installed Components in the registry
    - 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:3620
  - - C:\Windows\SysWOW64\NET.exe
      NET STOP srservice
      4⤵
      Suspicious use of WriteProcessMemory
      PID:4356
    - - C:\Windows\SysWOW64\net1.exe
        
        C:\Windows\system32\net1 STOP srservice
        5⤵
        
        PID:4504
  - - C:\Windows\SysWOW64\NET.exe
      NET STOP navapsvc
      4⤵
      Suspicious use of WriteProcessMemory
      PID:3776
    - - C:\Windows\SysWOW64\net1.exe
        
        C:\Windows\system32\net1 STOP navapsvc
        5⤵
        
        PID:4040
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\c46805d51bfee760e479a708d5b3a0d1e089396103d01f0693c3fc5edbd9760b.exe.bat
  2⤵
  PID:4328

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Winlogon Helper DLL

T1004

Privilege Escalation

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\c46805d51bfee760e479a708d5b3a0d1e089396103d01f0693c3fc5edbd9760b.exe.bat

Filesize
133B

MD5
050f243b8ea1f3bbcdd73d4743acc398

SHA1
b6c0d2b3e04f5acfde0a8501c7dfb566ba38de8c

SHA256
c9bfcbd8923a793f943efecdd20ac8648ec13ea1026420fdc8ba3a14535f584e

SHA512
2d9a0107d9b1446f099e56027541973cc8f3255d7aa16ff14d94791b5577a12c281934d7696b1e975de9394b6821cd7a434d7d9c9cbd72825ef3208c98bad41d

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

Filesize
342KB

MD5
0bf09fb0d1755a016eede7ac78b1d94b

SHA1
1fc39f7cf35a1c17f06b1e5709423b51c3520594

SHA256
c46805d51bfee760e479a708d5b3a0d1e089396103d01f0693c3fc5edbd9760b

SHA512
120d11133bea049fb9e9916a199ef6eadfb828f8f420d068c5a8a3ada16c8faa82abbe344fa1f45a38dae9b25d1369e3fc2a53f1323fc5aea283b885d121577b

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

Filesize
342KB

MD5
0bf09fb0d1755a016eede7ac78b1d94b

SHA1
1fc39f7cf35a1c17f06b1e5709423b51c3520594

SHA256
c46805d51bfee760e479a708d5b3a0d1e089396103d01f0693c3fc5edbd9760b

SHA512
120d11133bea049fb9e9916a199ef6eadfb828f8f420d068c5a8a3ada16c8faa82abbe344fa1f45a38dae9b25d1369e3fc2a53f1323fc5aea283b885d121577b

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

Filesize
36KB

MD5
562e0d01d6571fa2251a1e9f54c6cc69

SHA1
83677ad3bc630aa6327253c7b3deffbd4a8ce905

SHA256
c5b1d800c86d550c0b68c57c0d9911c1dd21df9e5e37e9e7bc032b5e66fdebe6

SHA512
166e132432eca24061f7e7d0c58c0b286e971ae2bc50f7c890b7707dd5dede19fcd83a5f79b6fd3f93dd691e07ad9bc1bd05fe82ccaade1610282188571585ea

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

Filesize
36KB

MD5
562e0d01d6571fa2251a1e9f54c6cc69

SHA1
83677ad3bc630aa6327253c7b3deffbd4a8ce905

SHA256
c5b1d800c86d550c0b68c57c0d9911c1dd21df9e5e37e9e7bc032b5e66fdebe6

SHA512
166e132432eca24061f7e7d0c58c0b286e971ae2bc50f7c890b7707dd5dede19fcd83a5f79b6fd3f93dd691e07ad9bc1bd05fe82ccaade1610282188571585ea

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

Filesize
36KB

MD5
562e0d01d6571fa2251a1e9f54c6cc69

SHA1
83677ad3bc630aa6327253c7b3deffbd4a8ce905

SHA256
c5b1d800c86d550c0b68c57c0d9911c1dd21df9e5e37e9e7bc032b5e66fdebe6

SHA512
166e132432eca24061f7e7d0c58c0b286e971ae2bc50f7c890b7707dd5dede19fcd83a5f79b6fd3f93dd691e07ad9bc1bd05fe82ccaade1610282188571585ea

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

Filesize
36KB

MD5
562e0d01d6571fa2251a1e9f54c6cc69

SHA1
83677ad3bc630aa6327253c7b3deffbd4a8ce905

SHA256
c5b1d800c86d550c0b68c57c0d9911c1dd21df9e5e37e9e7bc032b5e66fdebe6

SHA512
166e132432eca24061f7e7d0c58c0b286e971ae2bc50f7c890b7707dd5dede19fcd83a5f79b6fd3f93dd691e07ad9bc1bd05fe82ccaade1610282188571585ea

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
342KB

MD5
0bf09fb0d1755a016eede7ac78b1d94b

SHA1
1fc39f7cf35a1c17f06b1e5709423b51c3520594

SHA256
c46805d51bfee760e479a708d5b3a0d1e089396103d01f0693c3fc5edbd9760b

SHA512
120d11133bea049fb9e9916a199ef6eadfb828f8f420d068c5a8a3ada16c8faa82abbe344fa1f45a38dae9b25d1369e3fc2a53f1323fc5aea283b885d121577b

Download Submit
C:\Windows\services.exe

Filesize
342KB

MD5
0bf09fb0d1755a016eede7ac78b1d94b

SHA1
1fc39f7cf35a1c17f06b1e5709423b51c3520594

SHA256
c46805d51bfee760e479a708d5b3a0d1e089396103d01f0693c3fc5edbd9760b

SHA512
120d11133bea049fb9e9916a199ef6eadfb828f8f420d068c5a8a3ada16c8faa82abbe344fa1f45a38dae9b25d1369e3fc2a53f1323fc5aea283b885d121577b

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

Filesize
342KB

MD5
0bf09fb0d1755a016eede7ac78b1d94b

SHA1
1fc39f7cf35a1c17f06b1e5709423b51c3520594

SHA256
c46805d51bfee760e479a708d5b3a0d1e089396103d01f0693c3fc5edbd9760b

SHA512
120d11133bea049fb9e9916a199ef6eadfb828f8f420d068c5a8a3ada16c8faa82abbe344fa1f45a38dae9b25d1369e3fc2a53f1323fc5aea283b885d121577b

Download Submit
memory/2800-132-0x0000000000400000-0x00000000005FC000-memory.dmp

Filesize
2.0MB

Download
memory/2800-157-0x0000000000400000-0x00000000005FC000-memory.dmp

Filesize
2.0MB

Download
memory/2800-133-0x0000000000400000-0x00000000005FC000-memory.dmp

Filesize
2.0MB

Download
memory/3376-142-0x0000000000400000-0x00000000005FC000-memory.dmp

Filesize
2.0MB

Download
memory/3376-155-0x0000000000400000-0x00000000005FC000-memory.dmp

Filesize
2.0MB

Download
memory/3620-144-0x0000000010000000-0x000000001000B000-memory.dmp

Filesize
44KB

Download
memory/3620-159-0x0000000000400000-0x00000000005FC000-memory.dmp

Filesize
2.0MB

Download
memory/3620-143-0x0000000000400000-0x00000000005FC000-memory.dmp

Filesize
2.0MB

Download
memory/3620-149-0x0000000002D81000-0x0000000002D85000-memory.dmp

Filesize
16KB

Download