f145367b80f897c3094746cb1f96c119abe3007ea5254016ce79d8152ea5ec4c

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, 02:50

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General

Target

2024-10-10_41fb8748baa34af8aa791e746f69eeb1_cryptolocker.exe
Size

41KB
MD5

41fb8748baa34af8aa791e746f69eeb1
SHA1

8b5e9ccc5ec3b377e3786caea7acf54df94e9d5f
SHA256

f145367b80f897c3094746cb1f96c119abe3007ea5254016ce79d8152ea5ec4c
SHA512

a435c49b05b99db22c7a6f7a792cf4dd9c44fc59ee1a7b820693326e89e82ee271a9100d46af8a801df46f5e3afe9e2ee834d5a43295e1bf18fa699fdbd5189b
SSDEEP

768:qTVbxjgQNQXtckstOOtEvwDpjAaD3TUogs/VXpAPWRip:qTJu9cvMOtEvwDpjppVXzRA

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-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	2024-10-10_41fb8748baa34af8aa791e746f69eeb1_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2764	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3184-0-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/files/0x000c000000023b0f-13.dat	upx
behavioral2/memory/3184-17-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/memory/2764-27-0x0000000000500000-0x000000000050F000-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	asih.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-10-10_41fb8748baa34af8aa791e746f69eeb1_cryptolocker.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3184 wrote to memory of 2764	3184	2024-10-10_41fb8748baa34af8aa791e746f69eeb1_cryptolocker.exe	85
PID 3184 wrote to memory of 2764	3184	2024-10-10_41fb8748baa34af8aa791e746f69eeb1_cryptolocker.exe	85
PID 3184 wrote to memory of 2764	3184	2024-10-10_41fb8748baa34af8aa791e746f69eeb1_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-10-10_41fb8748baa34af8aa791e746f69eeb1_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-10-10_41fb8748baa34af8aa791e746f69eeb1_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3184
- 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:2764

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
41KB

MD5
9d73c8163d9e75711a162832380e7ffc

SHA1
73eeee5f1d2e0c3c15124d123aa6ee69726e2b66

SHA256
94a706977867673f21288396df13506d05f85c0394685ff2b3e96d10d2aa166f

SHA512
d9ba15e4de2e43095c5a27e21c033b940249eb9b6dbe034320659a0ba787ae15dd7c818243a8987460789c55287a2783c206a7b3bf630a169b619d7ce023ac47

Download Submit
memory/2764-20-0x0000000001F70000-0x0000000001F76000-memory.dmp

Filesize
24KB

Download
memory/2764-26-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/2764-27-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3184-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3184-1-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/3184-2-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/3184-3-0x00000000006E0000-0x00000000006E6000-memory.dmp

Filesize
24KB

Download
memory/3184-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download