8319e7c7a87834c6fbeb5cd5c31708138d8715295506c9fb5238cf0bcf841d2e

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, 04:51

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General

Target

2024-10-10_4cf0e5b1f4d5e6cb6fdb683be1a677d1_cryptolocker.exe
Size

55KB
MD5

4cf0e5b1f4d5e6cb6fdb683be1a677d1
SHA1

023a8beed4237db263b0d34c14863cdf6d51b25a
SHA256

8319e7c7a87834c6fbeb5cd5c31708138d8715295506c9fb5238cf0bcf841d2e
SHA512

efc6cd651eaa7a7cfd3083a67c4b06b6dbcd9ceebc5392008b2f309d5213561847ed2672d038955a2b5b3c960b183561ae6c0608bca455301ae7a4c54089c1fe
SSDEEP

768:z6LsoEEeegiZPvEhHSG+gzum/kLyMro2GtOOtEvwDpj/YY1J+OTOkahy:z6QFElP6n+gKmddpMOtEvwDpj31ik3

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	2024-10-10_4cf0e5b1f4d5e6cb6fdb683be1a677d1_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/3956-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x000b000000023bb0-13.dat	upx
behavioral2/memory/3956-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/3516-26-0x0000000000500000-0x0000000000510000-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	2024-10-10_4cf0e5b1f4d5e6cb6fdb683be1a677d1_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 3956 wrote to memory of 3516	3956	2024-10-10_4cf0e5b1f4d5e6cb6fdb683be1a677d1_cryptolocker.exe	86
PID 3956 wrote to memory of 3516	3956	2024-10-10_4cf0e5b1f4d5e6cb6fdb683be1a677d1_cryptolocker.exe	86
PID 3956 wrote to memory of 3516	3956	2024-10-10_4cf0e5b1f4d5e6cb6fdb683be1a677d1_cryptolocker.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-10-10_4cf0e5b1f4d5e6cb6fdb683be1a677d1_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-10-10_4cf0e5b1f4d5e6cb6fdb683be1a677d1_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3956
- 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
55KB

MD5
33b5fb58903fff10821e6f503e9f5009

SHA1
ec1339e96069a9efd1b83719054f62b2ff0e5ac7

SHA256
6311ae0976db5eb7ce4a0793032515ca4f4c9ba46119f7a6a069b88f4244e1e7

SHA512
62fe24e62d4a65e3649e7cc3b5785a5bfd2f872d07df7f044a0446395844a5e7dda679dc577445d2b8675c719ae700ac90fe3ed52cf62783d68d7bd8625c7dcd

Download Submit
memory/3516-19-0x00000000007B0000-0x00000000007B6000-memory.dmp

Filesize
24KB

Download
memory/3516-20-0x00000000007D0000-0x00000000007D6000-memory.dmp

Filesize
24KB

Download
memory/3516-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3956-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3956-1-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/3956-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/3956-3-0x0000000002090000-0x0000000002096000-memory.dmp

Filesize
24KB

Download
memory/3956-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download