787cac04295f81ec2fcc4d02e4c477579caf909d6c7685498408a4cc8101eca5

Analysis

max time kernel
143s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
18-01-2024 11:44

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General

Target

787cac04295f81ec2fcc4d02e4c477579caf909d6c7685498408a4cc8101eca5.exe
Size

2.3MB
MD5

0636d779e31acaa547ab6c6a8a7b222e
SHA1

b26b10fc2017a68d3c1c60aa6b969d52e3a7e53b
SHA256

787cac04295f81ec2fcc4d02e4c477579caf909d6c7685498408a4cc8101eca5
SHA512

150abcceafe9ea4509fc2df7403fc94dcffca698b3dce2a6f8e2b784e34930551e11c4bc092aa7a85f535736ad434215d64bd14ad3b267bf3fd3424b9d6c2053
SSDEEP

49152:gy63QQgrb/TCvO90dL3BmAFd4A64nsfJ0+8lGgTl75Cgf8b1a15kOgx:c3Rl+Itv15k

Score

7^/10

Malware Config

Signatures

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-1-5-21-1168293393-3419776239-306423207-1000\Control Panel\International\Geo\Nation	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
5004	calc.exe.exe

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

System Information Discovery
T1082

Modifies registry class 2 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000_Classes\Local Settings	cmd.exe
Key created	\REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000_Classes\Local Settings	calc.exe.exe

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
1996	NOTEPAD.EXE

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
1708	787cac04295f81ec2fcc4d02e4c477579caf909d6c7685498408a4cc8101eca5.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4064	OpenWith.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1708 wrote to memory of 2064	1708	787cac04295f81ec2fcc4d02e4c477579caf909d6c7685498408a4cc8101eca5.exe	23
PID 1708 wrote to memory of 2064	1708	787cac04295f81ec2fcc4d02e4c477579caf909d6c7685498408a4cc8101eca5.exe	23
PID 1708 wrote to memory of 5004	1708	787cac04295f81ec2fcc4d02e4c477579caf909d6c7685498408a4cc8101eca5.exe	20
PID 1708 wrote to memory of 5004	1708	787cac04295f81ec2fcc4d02e4c477579caf909d6c7685498408a4cc8101eca5.exe	20
PID 2064 wrote to memory of 1996	2064	cmd.exe	21
PID 2064 wrote to memory of 1996	2064	cmd.exe	21

C:\Users\Admin\AppData\Local\Temp\787cac04295f81ec2fcc4d02e4c477579caf909d6c7685498408a4cc8101eca5.exe
"C:\Users\Admin\AppData\Local\Temp\787cac04295f81ec2fcc4d02e4c477579caf909d6c7685498408a4cc8101eca5.exe"
1⤵
- Suspicious behavior: RenamesItself
- Suspicious use of WriteProcessMemory
PID:1708
- C:\Users\Public\Downloads\calc.exe.exe
  "C:/Users/Public/Downloads/calc.exe.exe "
  2⤵
  - Executes dropped EXE
  - Modifies registry class
  PID:5004
- C:\Windows\system32\cmd.exe
  cmd " /c " C:\Users\Admin\AppData\Local\Temp\1.txt
  2⤵
  - Checks computer location settings
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2064

C:\Windows\system32\NOTEPAD.EXE
"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Local\Temp\1.txt
1⤵
- Opens file in notepad (likely ransom note)
PID:1996

C:\Windows\system32\OpenWith.exe
C:\Windows\system32\OpenWith.exe -Embedding
1⤵
- Suspicious use of SetWindowsHookEx
PID:4064

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\1.txt

Filesize
6B

MD5
4297f44b13955235245b2497399d7a93

SHA1
601f1889667efaebb33b8c12572835da3f027f78

SHA256
96cae35ce8a9b0244178bf28e4966c2ce1b8385723a96a6b838858cdd6ca0a1e

SHA512
263fec58861449aacc1c328a4aff64aff4c62df4a2d50b3f207fa89b6e242c9aa778e7a8baeffef85b6ca6d2e7dc16ff0a760d59c13c238f6bcdc32f8ce9cc62

Download Submit
C:\Users\Public\Downloads\calc.exe.exe

Filesize
44KB

MD5
2f82623f9523c0d167862cad0eff6806

SHA1
5d77804b87735e66d7d1e263c31c4ef010f16153

SHA256
9c2c8a8588fe6db09c09337e78437cb056cd557db1bcf5240112cbfb7b600efb

SHA512
7fe8285e52355f2e53650dc4176f62299b8185ed7188850e0a566ddef7e77e1e88511bdcf6f478c938acef3d61d8b269e218970134e1ffc5581f8c7be750c330

Download Submit