37357309c55c39494ce9b8ba4996c843e27e92952f0614d3ec0206a10a81818d

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
12/10/2024, 02:57

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General

Target

2024-10-12_8dd183ef4f57c90fbd94c4ac5f3461a8_cryptolocker.exe
Size

91KB
MD5

8dd183ef4f57c90fbd94c4ac5f3461a8
SHA1

737eb45e73cbe520eccb29b7d82ad8ddc089260b
SHA256

37357309c55c39494ce9b8ba4996c843e27e92952f0614d3ec0206a10a81818d
SHA512

99aea6c52ac1c8e482f76e791d052242850504c39229b289ccde90a3034b2bf1c18f35e7e55ecaaa11b369f7b6212e81238ccc5b6bc63a9e42faebfe5c6c243d
SSDEEP

1536:qkmnpomddpMOtEvwDpjJGYQbN/PKwNgp01ld:AnBdOOtEvwDpj6zt

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-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	2024-10-12_8dd183ef4f57c90fbd94c4ac5f3461a8_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2388	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2524-0-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/files/0x000c000000023b35-13.dat	upx
behavioral2/memory/2524-18-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/memory/2388-27-0x0000000000500000-0x000000000050F000-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	2024-10-12_8dd183ef4f57c90fbd94c4ac5f3461a8_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 2524 wrote to memory of 2388	2524	2024-10-12_8dd183ef4f57c90fbd94c4ac5f3461a8_cryptolocker.exe	84
PID 2524 wrote to memory of 2388	2524	2024-10-12_8dd183ef4f57c90fbd94c4ac5f3461a8_cryptolocker.exe	84
PID 2524 wrote to memory of 2388	2524	2024-10-12_8dd183ef4f57c90fbd94c4ac5f3461a8_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-10-12_8dd183ef4f57c90fbd94c4ac5f3461a8_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-10-12_8dd183ef4f57c90fbd94c4ac5f3461a8_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2524
- 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:2388

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
91KB

MD5
80e7d5d01c8f29ae565658d363e5e686

SHA1
acaf93495ae3782ca976df98ffc37804e0007ef4

SHA256
110134ade3ba8141791a71898f92c58dfc242ec6001dec130be88e62401ebb4c

SHA512
2bedcfb962509bda0e42c0836efe9f4420d1ae8d81f090ba3b09b1380819057c3f81da5c71191ca2eed27c812449bbc6081272a08b6be70760a49ed08f3b71b3

Download Submit
memory/2388-20-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/2388-21-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/2388-27-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2524-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2524-1-0x0000000000830000-0x0000000000836000-memory.dmp

Filesize
24KB

Download
memory/2524-2-0x0000000000830000-0x0000000000836000-memory.dmp

Filesize
24KB

Download
memory/2524-3-0x00000000020F0000-0x00000000020F6000-memory.dmp

Filesize
24KB

Download
memory/2524-18-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download