3472c9512be9b11ba4a644ce0bfebaba18fdd8db25b12bc81eed32a3625834ff

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
07/09/2024, 08:29

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General

Target

2024-09-07_f3f9360273c26f2af050025f233cf0c9_cryptolocker.exe
Size

96KB
MD5

f3f9360273c26f2af050025f233cf0c9
SHA1

f8b93758b188a17a2985d925c722933757155e1c
SHA256

3472c9512be9b11ba4a644ce0bfebaba18fdd8db25b12bc81eed32a3625834ff
SHA512

92ad95c16226543cc1855ad9723154c368aac4597a68852c25aa94309b2421c714fd791af24557bbe84d46232cb1f9292804451155e208e911fe4f3103bcd4e6
SSDEEP

1536:qkmnpomddpMOtEvwDpjJGYQbN/PKwNgpwqWsviPd:AnBdOOtEvwDpj6zv

Score

7^/10

discovery upx

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-1-5-21-2392887640-1187051047-2909758433-1000\Control Panel\International\Geo\Nation	2024-09-07_f3f9360273c26f2af050025f233cf0c9_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3516	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1728-0-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/files/0x0009000000023451-13.dat	upx
behavioral2/memory/1728-17-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/memory/3516-26-0x0000000000500000-0x000000000050F000-memory.dmp	upx

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-09-07_f3f9360273c26f2af050025f233cf0c9_cryptolocker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	asih.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1728 wrote to memory of 3516	1728	2024-09-07_f3f9360273c26f2af050025f233cf0c9_cryptolocker.exe	84
PID 1728 wrote to memory of 3516	1728	2024-09-07_f3f9360273c26f2af050025f233cf0c9_cryptolocker.exe	84
PID 1728 wrote to memory of 3516	1728	2024-09-07_f3f9360273c26f2af050025f233cf0c9_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-09-07_f3f9360273c26f2af050025f233cf0c9_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-07_f3f9360273c26f2af050025f233cf0c9_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1728
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:3516

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

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
96KB

MD5
55a87fbe9cc25a5f0a4de8455c80d27f

SHA1
1e1afb7e72317d607fc89230e72bc717fdc67f6e

SHA256
33c85ce316fa34c2e26b74d242ff4cc1f44c9867cebc40dcdf349a50ce9ccb3c

SHA512
135449568ab750279f0d9d7244afd0e30762ee895594e11ecff5109047d59e1171c628f869fb431a7149499cb22da89daf9b306cb9246cf16ac4089c9b684390

Download Submit
memory/1728-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1728-1-0x00000000007B0000-0x00000000007B6000-memory.dmp

Filesize
24KB

Download
memory/1728-2-0x00000000007B0000-0x00000000007B6000-memory.dmp

Filesize
24KB

Download
memory/1728-3-0x00000000007D0000-0x00000000007D6000-memory.dmp

Filesize
24KB

Download
memory/1728-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3516-19-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download
memory/3516-20-0x00000000005D0000-0x00000000005D6000-memory.dmp

Filesize
24KB

Download
memory/3516-26-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download