7bb95f4481a64807202b57aef0e11503006537e7d928b2a633661b591aca0875

Analysis

max time kernel
148s
max time network
159s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
12-03-2024 23:08

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

c45709d0c349e754ae8e9dd1ed10d94a.exe
Size

54KB
MD5

c45709d0c349e754ae8e9dd1ed10d94a
SHA1

65d3f0255aad3a0ac8659ed2ed85313f68de7547
SHA256

7bb95f4481a64807202b57aef0e11503006537e7d928b2a633661b591aca0875
SHA512

f0f4147bc7541dd380e60a50bada93ed902f2f3c6aeee1c6b0e198d5062f8b538afc701c5e1ac1f5901d5f92e40c5d13f3db763ab3628256bb593926277269ab
SSDEEP

768:Oe3PFaDVyOQgljLDKRJyM3BmsHzSB4us/wJJapg4RoSMZeUZB/4sjQtAIOqqTRPU:V3cpyORJLuB4P4AJJv4Romu/++Ek1U7

Score

10^/10

evasion

Malware Config

Signatures

Modifies visibility of file extensions 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-1-5-21-557049126-2506969350-2798870634-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\HideFileExt = "1"	c45709d0c349e754ae8e9dd1ed10d94a.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-557049126-2506969350-2798870634-1000\Control Panel\International\Geo\Nation	c45709d0c349e754ae8e9dd1ed10d94a.exe

Loads dropped DLL 1 IoCs

pid	Process
2640	c45709d0c349e754ae8e9dd1ed10d94a.exe

Drops desktop.ini file(s) 1 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Microsoft\Internat Explorer\Desktop.ini	c45709d0c349e754ae8e9dd1ed10d94a.exe

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Microsoft\Internat Explorer\Desktop.ini	c45709d0c349e754ae8e9dd1ed10d94a.exe
File created	C:\Program Files (x86)\Microsoft\Internat Explorer\target.lnk	c45709d0c349e754ae8e9dd1ed10d94a.exe
File opened for modification	C:\Program Files (x86)\Microsoft\Internat Explorer	attrib.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Modifies registry class 9 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\ocfile\shell\open	c45709d0c349e754ae8e9dd1ed10d94a.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.oc	c45709d0c349e754ae8e9dd1ed10d94a.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\ocfile\DefaultIcon	c45709d0c349e754ae8e9dd1ed10d94a.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\ocfile	c45709d0c349e754ae8e9dd1ed10d94a.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\ocfile\shell\open\command	c45709d0c349e754ae8e9dd1ed10d94a.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\ocfile\shell	c45709d0c349e754ae8e9dd1ed10d94a.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.oc\ = "ocfile"	c45709d0c349e754ae8e9dd1ed10d94a.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\ocfile\DefaultIcon\ = "%1"	c45709d0c349e754ae8e9dd1ed10d94a.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\ocfile\shell\open\command\ = "explorer \"C:\\Program Files (x86)\\Microsoft\\Internat Explorer\""	c45709d0c349e754ae8e9dd1ed10d94a.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2640 wrote to memory of 4364	2640	c45709d0c349e754ae8e9dd1ed10d94a.exe	91
PID 2640 wrote to memory of 4364	2640	c45709d0c349e754ae8e9dd1ed10d94a.exe	91
PID 2640 wrote to memory of 4364	2640	c45709d0c349e754ae8e9dd1ed10d94a.exe	91
PID 2640 wrote to memory of 4164	2640	c45709d0c349e754ae8e9dd1ed10d94a.exe	94
PID 2640 wrote to memory of 4164	2640	c45709d0c349e754ae8e9dd1ed10d94a.exe	94
PID 2640 wrote to memory of 4164	2640	c45709d0c349e754ae8e9dd1ed10d94a.exe	94

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
4364	attrib.exe

C:\Users\Admin\AppData\Local\Temp\c45709d0c349e754ae8e9dd1ed10d94a.exe
"C:\Users\Admin\AppData\Local\Temp\c45709d0c349e754ae8e9dd1ed10d94a.exe"
1⤵
- Modifies visibility of file extensions in Explorer
- Checks computer location settings
- Loads dropped DLL
- Drops desktop.ini file(s)
- Drops file in Program Files directory
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:2640
- C:\Windows\SysWOW64\attrib.exe
  "C:\Windows\System32\attrib.exe" "C:\Program Files (x86)\Microsoft\Internat Explorer" +s
  2⤵
  - Drops file in Program Files directory
  - Views/modifies file attributes
  PID:4364
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\temp_tmp.bat" "
  2⤵
  PID:4164

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

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\nsw7DEC.tmp\System.dll

Filesize
11KB

MD5
00a0194c20ee912257df53bfe258ee4a

SHA1
d7b4e319bc5119024690dc8230b9cc919b1b86b2

SHA256
dc4da2ccadb11099076926b02764b2b44ad8f97cd32337421a4cc21a3f5448f3

SHA512
3b38a2c17996c3b77ebf7b858a6c37415615e756792132878d8eddbd13cb06710b7da0e8b58104768f8e475fc93e8b44b3b1ab6f70ddf52edee111aaf5ef5667

Download Submit
C:\Users\Admin\AppData\Local\Temp\temp_tmp.bat

Filesize
186B

MD5
c43adb1caf8346189194d6e83970aeee

SHA1
36c249b42b7162aac269710cdb6a5b2b28632f95

SHA256
10d4ac859552819968e1da5a336bac7245e1fdf3e3a1c71eaaceb96ed5c4c132

SHA512
708d89989d849d0fedbff49002f4155b58a0fd8c4ea6b4a8924b28c5c479fa3402e49f8e56d9c68bec434047d6543095710012fca573f3c5ff59af85debb2431

Download Submit

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads