cf3a1736e819c1139e36657fe47a2753f3114fc44467ad38464efa51d8992c84

Analysis

max time kernel
148s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
06/09/2024, 00:53

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General

Target

2024-09-06_b68ae7360d33339d772363343ad49615_cryptolocker.exe
Size

39KB
MD5

b68ae7360d33339d772363343ad49615
SHA1

e06c18214211209544d69ca1f41a125574e02949
SHA256

cf3a1736e819c1139e36657fe47a2753f3114fc44467ad38464efa51d8992c84
SHA512

e67672807bd918372cd0ecab135009bd3e1065f9e334b14b5f26a4255d4574c7c54faee51bd3600367bf2dae164252d7211b670dafabb39d43e35d9cc3ccf96c
SSDEEP

768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITv:qDdFJy3QMOtEvwDpjjWMl7Tv

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-1-5-21-656926755-4116854191-210765258-1000\Control Panel\International\Geo\Nation	2024-09-06_b68ae7360d33339d772363343ad49615_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2052	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3952-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x0008000000023482-13.dat	upx
behavioral2/memory/3952-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/2052-26-0x0000000000500000-0x0000000000510000-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	2024-09-06_b68ae7360d33339d772363343ad49615_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 3952 wrote to memory of 2052	3952	2024-09-06_b68ae7360d33339d772363343ad49615_cryptolocker.exe	87
PID 3952 wrote to memory of 2052	3952	2024-09-06_b68ae7360d33339d772363343ad49615_cryptolocker.exe	87
PID 3952 wrote to memory of 2052	3952	2024-09-06_b68ae7360d33339d772363343ad49615_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-09-06_b68ae7360d33339d772363343ad49615_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-06_b68ae7360d33339d772363343ad49615_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3952
- 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:2052

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
39KB

MD5
2e189e3f995872e4dc0780835bb04634

SHA1
9293c131d88a299ca162825c4cab7b15687b6b55

SHA256
43894b89ecbec24b98707d250a6f50437f83eafe5f399b311ac3fcb97c239466

SHA512
caed513216e5082458e0b7ccee944668a20447b1777ae4a41aaf6411757127a5b594a4f4dc1e4381a7fcf22488bfd686da49265248ce774decf14cc056fb6e0a

Download Submit
memory/2052-19-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/2052-20-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/2052-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3952-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3952-1-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/3952-2-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/3952-3-0x0000000000860000-0x0000000000866000-memory.dmp

Filesize
24KB

Download
memory/3952-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download