f75c6a90754801173f115b8dad623aea1c62926577086d5487e449b8e21ddda0

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
11-09-2024 13:26

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General

Target

2024-09-11_6d237592d412d21fe8e72e5e7574a93b_cryptolocker.exe
Size

40KB
MD5

6d237592d412d21fe8e72e5e7574a93b
SHA1

14900433493434d78b8a52436e19ff2b3def431b
SHA256

f75c6a90754801173f115b8dad623aea1c62926577086d5487e449b8e21ddda0
SHA512

8a8f0de07e719b01390dabd17b93c5d41815d3dea22fc31f928465b0817e206ffa595a10ac9a3311832d7a789d94ef68e61a55a036d11d8d3724228ed0da235d
SSDEEP

768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkIT+t:qDdFJy3QMOtEvwDpjjWMl7TK

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-1-5-21-355097885-2402257403-2971294179-1000\Control Panel\International\Geo\Nation	2024-09-11_6d237592d412d21fe8e72e5e7574a93b_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3632	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2444-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x0009000000023474-13.dat	upx
behavioral2/memory/2444-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/3632-25-0x0000000000500000-0x0000000000510000-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	asih.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-09-11_6d237592d412d21fe8e72e5e7574a93b_cryptolocker.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2444 wrote to memory of 3632	2444	2024-09-11_6d237592d412d21fe8e72e5e7574a93b_cryptolocker.exe	83
PID 2444 wrote to memory of 3632	2444	2024-09-11_6d237592d412d21fe8e72e5e7574a93b_cryptolocker.exe	83
PID 2444 wrote to memory of 3632	2444	2024-09-11_6d237592d412d21fe8e72e5e7574a93b_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-09-11_6d237592d412d21fe8e72e5e7574a93b_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-11_6d237592d412d21fe8e72e5e7574a93b_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2444
- 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:3632

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
40KB

MD5
54e21ef26b94c29a8c5a8f8b2261deca

SHA1
ae21d71a48c57d5830ee5460fe1232afe365167d

SHA256
1fbd9f5e7feca1c9e614c089ea7d88532496391e76bd06f53197a5b25abc421a

SHA512
c182acbfb881b6714f0b430fa4edd2e5de6a3a3de4ac9bbf63a209932729caab63f7266322e8789a5294a3000ca532735bfcdfa2e456b9f28d5eb57729a105b7

Download Submit
memory/2444-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2444-1-0x00000000004C0000-0x00000000004C6000-memory.dmp

Filesize
24KB

Download
memory/2444-2-0x00000000004C0000-0x00000000004C6000-memory.dmp

Filesize
24KB

Download
memory/2444-3-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/2444-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3632-25-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download