a6ebcd5adf5a393ddb0b2eaa4607c37d4e1ac0693e6717dfebdb48805134a79d

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
10-10-2024 08:27

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General

Target

2024-10-10_4227d7fd4ea4c89fa20010c0aba8e3ef_cryptolocker.exe
Size

38KB
MD5

4227d7fd4ea4c89fa20010c0aba8e3ef
SHA1

3781556565e1b0b66c3b2c8cb760f28bffc925bc
SHA256

a6ebcd5adf5a393ddb0b2eaa4607c37d4e1ac0693e6717dfebdb48805134a79d
SHA512

52477e36b663679b0cf140ab3c8648075ea46869a834b8e841a2a8d155648c1dea3b665465506d118102d6be2355e260ca7d040babffadbae27dce7b3c643ce8
SSDEEP

768:qUmnjFom/kLyMro2GtOOtEvwDpjeMLam5axK3hn:qUmnpomddpMOtEvwDpjjaYaQhn

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-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	2024-10-10_4227d7fd4ea4c89fa20010c0aba8e3ef_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1792	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4788-0-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/files/0x000d000000023b0d-13.dat	upx
behavioral2/memory/4788-17-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/memory/1792-26-0x0000000000500000-0x000000000050F000-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	2024-10-10_4227d7fd4ea4c89fa20010c0aba8e3ef_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 4788 wrote to memory of 1792	4788	2024-10-10_4227d7fd4ea4c89fa20010c0aba8e3ef_cryptolocker.exe	85
PID 4788 wrote to memory of 1792	4788	2024-10-10_4227d7fd4ea4c89fa20010c0aba8e3ef_cryptolocker.exe	85
PID 4788 wrote to memory of 1792	4788	2024-10-10_4227d7fd4ea4c89fa20010c0aba8e3ef_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-10-10_4227d7fd4ea4c89fa20010c0aba8e3ef_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-10-10_4227d7fd4ea4c89fa20010c0aba8e3ef_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4788
- 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:1792

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
4653d2332cca0736e6d3250b3dcd2e84

SHA1
1d5a2add0297e0ad30f272abcd098f9706ddd7f2

SHA256
d670eff55423494c7c9dbcce4707206fb010757e954012c2016c19b67b534f2f

SHA512
c8799f9f3acc8ef0663b8051b20d4f9025fe7e32447291ce2628907d5c92a0388cef3447f1865d9d6b8bbc42a2b86de76bddfccb7ad3454e6165ebc9207454c7

Download Submit
memory/1792-19-0x0000000000740000-0x0000000000746000-memory.dmp

Filesize
24KB

Download
memory/1792-20-0x0000000000760000-0x0000000000766000-memory.dmp

Filesize
24KB

Download
memory/1792-26-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/4788-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/4788-1-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download
memory/4788-2-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download
memory/4788-3-0x0000000002230000-0x0000000002236000-memory.dmp

Filesize
24KB

Download
memory/4788-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download