65ed4cf983739effdc0bd4d8ffec4d558017a1dea18c32e80f623a32ee4c045c

Analysis

max time kernel
150s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
05-03-2024 14:45

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General

Target

b4f49388d7f11a3cc0ce626052047ad1.exe
Size

434KB
MD5

b4f49388d7f11a3cc0ce626052047ad1
SHA1

80779cc07101b1bae736b927d8274484a81e3e26
SHA256

65ed4cf983739effdc0bd4d8ffec4d558017a1dea18c32e80f623a32ee4c045c
SHA512

0cb7369529778c1807042725b70a38d33f385767f37184d3860a8b6516daf70a6670ffbb2f5012276867eb5ffb86186eefc5e710185931c72dfffa39048c62c9
SSDEEP

12288:zWWVmQdOw0tp2cYM0jz1H0n85Eny0PqprV76:V1dncYMGz1H0vhPqC

Score

10^/10

evasion

Malware Config

Signatures

Modifies visibility of file extensions in Explorer 2 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1564.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\HideFileExt = "1"	b4f49388d7f11a3cc0ce626052047ad1.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\HideFileExt = "1"	b4f49388d7f11a3cc0ce626052047ad1.exe

Modifies visiblity of hidden/system files in Explorer 2 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "1"	b4f49388d7f11a3cc0ce626052047ad1.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\msscp.reg	b4f49388d7f11a3cc0ce626052047ad1.exe
File opened for modification	C:\Windows\SysWOW64\msscp.reg	b4f49388d7f11a3cc0ce626052047ad1.exe

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\System\taobao.ico	b4f49388d7f11a3cc0ce626052047ad1.exe
File opened for modification	C:\Program Files\Common Files\System\taobao.ico	b4f49388d7f11a3cc0ce626052047ad1.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key deleted	\REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\SOFTWARE\MICROSOFT\INTERNET EXPLORER\TYPEDURLS	b4f49388d7f11a3cc0ce626052047ad1.exe

Modifies Internet Explorer start page 1 TTPs 2 IoCs

stealer

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Internet Explorer\Main\Start Page = "http://n.srpkw.com"	b4f49388d7f11a3cc0ce626052047ad1.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Start Page = "http://n.srpkw.com"	b4f49388d7f11a3cc0ce626052047ad1.exe

Modifies registry class 31 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000_Classes\.htm	b4f49388d7f11a3cc0ce626052047ad1.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Play2a	b4f49388d7f11a3cc0ce626052047ad1.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\htmfile\ = "htmfileico"	b4f49388d7f11a3cc0ce626052047ad1.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\htmfile\ = "htmfileico"	b4f49388d7f11a3cc0ce626052047ad1.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\htmfile\DefaultIcon	b4f49388d7f11a3cc0ce626052047ad1.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\htmfile\DefaultIcon\ = "C:\\Program Files\\Common Files\\System\\taobao.ico"	b4f49388d7f11a3cc0ce626052047ad1.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\htmfile\shell\open\command	b4f49388d7f11a3cc0ce626052047ad1.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\Play2a\cdafile2 = "70359"	b4f49388d7f11a3cc0ce626052047ad1.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\DefaultIcon\ = "C:\\Program Files\\internet explorer\\IEXPLORE.EXE,0"	b4f49388d7f11a3cc0ce626052047ad1.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\htmfile\DefaultIcon	b4f49388d7f11a3cc0ce626052047ad1.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\Play2a\10 = "0"	b4f49388d7f11a3cc0ce626052047ad1.exe
Key created	\REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000_Classes\.htm	b4f49388d7f11a3cc0ce626052047ad1.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\htmfile	b4f49388d7f11a3cc0ce626052047ad1.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\Play2a\10 = "1"	b4f49388d7f11a3cc0ce626052047ad1.exe
Key created	\REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000_Classes\.html	b4f49388d7f11a3cc0ce626052047ad1.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\htmfile\shell\open\command\ = "\"C:\\Program Files\\Internet Explorer\\iexplore.exe\" \"%1\""	b4f49388d7f11a3cc0ce626052047ad1.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\DefaultIcon	b4f49388d7f11a3cc0ce626052047ad1.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\htmfile\shell\open	b4f49388d7f11a3cc0ce626052047ad1.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\DefaultIcon	b4f49388d7f11a3cc0ce626052047ad1.exe
Key created	\REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000_Classes\.html	b4f49388d7f11a3cc0ce626052047ad1.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\htmfile	b4f49388d7f11a3cc0ce626052047ad1.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000_Classes\.html\ = "htmlfile"	b4f49388d7f11a3cc0ce626052047ad1.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000_Classes\.htm\ = "htmfile"	b4f49388d7f11a3cc0ce626052047ad1.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\htmfile\DefaultIcon\ = "C:\\Program Files\\Common Files\\System\\taobao.ico"	b4f49388d7f11a3cc0ce626052047ad1.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\htmfile\shell\open\command\ = "\"C:\\Program Files\\Internet Explorer\\iexplore.exe\" \"%1\""	b4f49388d7f11a3cc0ce626052047ad1.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\Play2a\1 = "20240305"	b4f49388d7f11a3cc0ce626052047ad1.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\htmfile\shell\open\command	b4f49388d7f11a3cc0ce626052047ad1.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\DefaultIcon\ = "C:\\Program Files\\internet explorer\\IEXPLORE.EXE,0"	b4f49388d7f11a3cc0ce626052047ad1.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000_Classes\.html\ = "htmlfile"	b4f49388d7f11a3cc0ce626052047ad1.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000_Classes\.htm\ = "htmfile"	b4f49388d7f11a3cc0ce626052047ad1.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\htmfile\shell	b4f49388d7f11a3cc0ce626052047ad1.exe

Runs .reg file with regedit 2 IoCs

pid	Process
856	regedit.exe
4876	regedit.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 5032 wrote to memory of 4876	5032	b4f49388d7f11a3cc0ce626052047ad1.exe	87
PID 5032 wrote to memory of 4876	5032	b4f49388d7f11a3cc0ce626052047ad1.exe	87
PID 5032 wrote to memory of 4876	5032	b4f49388d7f11a3cc0ce626052047ad1.exe	87
PID 5032 wrote to memory of 2352	5032	b4f49388d7f11a3cc0ce626052047ad1.exe	90
PID 5032 wrote to memory of 2352	5032	b4f49388d7f11a3cc0ce626052047ad1.exe	90
PID 5032 wrote to memory of 2352	5032	b4f49388d7f11a3cc0ce626052047ad1.exe	90
PID 2352 wrote to memory of 856	2352	b4f49388d7f11a3cc0ce626052047ad1.exe	91
PID 2352 wrote to memory of 856	2352	b4f49388d7f11a3cc0ce626052047ad1.exe	91
PID 2352 wrote to memory of 856	2352	b4f49388d7f11a3cc0ce626052047ad1.exe	91

C:\Users\Admin\AppData\Local\Temp\b4f49388d7f11a3cc0ce626052047ad1.exe
"C:\Users\Admin\AppData\Local\Temp\b4f49388d7f11a3cc0ce626052047ad1.exe"
1⤵
- Modifies visibility of file extensions in Explorer
- Modifies visiblity of hidden/system files in Explorer
- Drops file in System32 directory
- Drops file in Program Files directory
- Modifies Internet Explorer settings
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:5032
- C:\Windows\SysWOW64\regedit.exe
  C:\Windows\regedit.exe /S C:\Windows\system32\msscp.reg
  2⤵
  - Runs .reg file with regedit
  PID:4876
- C:\Users\Admin\AppData\Local\Temp\b4f49388d7f11a3cc0ce626052047ad1.exe
  C:\Users\Admin\AppData\Local\Temp\b4f49388d7f11a3cc0ce626052047ad1.exe
  2⤵
  - Modifies visibility of file extensions in Explorer
  - Drops file in System32 directory
  - Drops file in Program Files directory
  - Modifies Internet Explorer start page
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2352
- - C:\Windows\SysWOW64\regedit.exe
    C:\Windows\regedit.exe /S C:\Windows\system32\msscp.reg
    3⤵
    - Runs .reg file with regedit
    PID:856

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Program Files\Common Files\System\taobao.ico

Filesize
14KB

MD5
468fada123f5548ac87e57bae81f6782

SHA1
edb8f012c25906e6afd8bf335b495e16c440243d

SHA256
091c882bb307d57f2c7c42309e7ba8740130fef8c3ed772b0bc5e5505e37034d

SHA512
635ec26c88c2394dd4f2a81b9aea8f429a91adfeb37ae34e51b03f3cf8e503c123c3685938f40cea07d6146e0c7113aadbe62fa528f1f6d8b995e617fd68a4aa

Download Submit
C:\Windows\SysWOW64\msscp.reg

Filesize
228B

MD5
2d06a424ad1c7611ea9caad93892ea26

SHA1
a901e15c2ecea498f1ca8ffc5d5c32bd3f0169d8

SHA256
8c19027357bcb3170b6844aec44cd4c143c7b795d5df52ff89426615010f715c

SHA512
3199dffce9d7625d9e01d7a06c912d3629e5f3d98d3935763df6b323807d46f24a40876d78d5ae7f7ac83c90e498e7c4810d88993904dbca1036e8c06833ccdf

Download Submit
memory/2352-5-0x0000000000400000-0x000000000047D000-memory.dmp

Filesize
500KB

Download
memory/2352-9-0x0000000002110000-0x0000000002111000-memory.dmp

Filesize
4KB

Download
memory/2352-33-0x0000000000400000-0x000000000047D000-memory.dmp

Filesize
500KB

Download
memory/5032-0-0x0000000000400000-0x000000000047D000-memory.dmp

Filesize
500KB

Download
memory/5032-1-0x0000000002270000-0x0000000002271000-memory.dmp

Filesize
4KB

Download
memory/5032-34-0x0000000000400000-0x000000000047D000-memory.dmp

Filesize
500KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads