c6cc346eddd1b7767a2607d9280dcb7d51965085eb9a3e9bba7f2b2e54a2a1f1

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
04-10-2024 09:28

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General

Target

2024-10-04_475c30917834e3a16cf8373cf3b6718d_cryptolocker.exe
Size

39KB
MD5

475c30917834e3a16cf8373cf3b6718d
SHA1

4a1cf50293ccffdc96c5620190d96dddc821e4f0
SHA256

c6cc346eddd1b7767a2607d9280dcb7d51965085eb9a3e9bba7f2b2e54a2a1f1
SHA512

d6068ff51eace2c5cc9d87514a6d9e4ad62058763ce1315ec363dede5f5b9a1be146310291519c843a50ad62bbcfdec4791a7af5cc0bb73ed0a70a7069c81950
SSDEEP

768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITl:qDdFJy3QMOtEvwDpjjWMl7Tl

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	2024-10-04_475c30917834e3a16cf8373cf3b6718d_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3600	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3936-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x00090000000233ad-13.dat	upx
behavioral2/memory/3936-18-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/3600-27-0x0000000000500000-0x0000000000510000-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	2024-10-04_475c30917834e3a16cf8373cf3b6718d_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 3936 wrote to memory of 3600	3936	2024-10-04_475c30917834e3a16cf8373cf3b6718d_cryptolocker.exe	82
PID 3936 wrote to memory of 3600	3936	2024-10-04_475c30917834e3a16cf8373cf3b6718d_cryptolocker.exe	82
PID 3936 wrote to memory of 3600	3936	2024-10-04_475c30917834e3a16cf8373cf3b6718d_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-10-04_475c30917834e3a16cf8373cf3b6718d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-10-04_475c30917834e3a16cf8373cf3b6718d_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3936
- 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:3600

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
39KB

MD5
eb6161a213eaa7ce0f7c8d9d9113816f

SHA1
b4d2e65cb293c03fec6a6153770ddbd9682a6cd0

SHA256
fdd110de541e826c332d83b626b7b6b4e8eed9f3d88cf6effdd07521ae220751

SHA512
5c3788707b3c1ec6ffe0b747fd243c875af65089edec5eeb7976687c813250cbb0b22d80efa3728a1120321cfc73731fbefca3db9a9e7a981c6f3415ec6b9cbf

Download Submit
memory/3600-20-0x0000000002100000-0x0000000002106000-memory.dmp

Filesize
24KB

Download
memory/3600-26-0x0000000000670000-0x0000000000676000-memory.dmp

Filesize
24KB

Download
memory/3600-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3936-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3936-1-0x00000000006F0000-0x00000000006F6000-memory.dmp

Filesize
24KB

Download
memory/3936-2-0x00000000006F0000-0x00000000006F6000-memory.dmp

Filesize
24KB

Download
memory/3936-3-0x0000000000710000-0x0000000000716000-memory.dmp

Filesize
24KB

Download
memory/3936-18-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download