b7b07e4942f4bc4ddfc5ef81b81fbe178b735fc4786e06f73ef90270b64b8f8e

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
20/11/2024, 03:40

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General

Target

2024-11-20_ed554618ea79aac7ee409d66bf98b3c9_cryptolocker.exe
Size

36KB
MD5

ed554618ea79aac7ee409d66bf98b3c9
SHA1

2fd69a212e6cdde49f7538b4306b318a57324498
SHA256

b7b07e4942f4bc4ddfc5ef81b81fbe178b735fc4786e06f73ef90270b64b8f8e
SHA512

2f45e6c6f65a22595eb4c3767ba686717b15b6e157794547f57f7acc0b2535498c3b8a6ceb3415ea8975eeaa9a2f9fd6b3183a6e619a23b2b954cbd926731137
SSDEEP

768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITr:qDdFJy3QMOtEvwDpjjWMl7Tr

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-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	2024-11-20_ed554618ea79aac7ee409d66bf98b3c9_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2164	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3764-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x000c000000023af7-13.dat	upx
behavioral2/memory/3764-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/2164-26-0x0000000000500000-0x0000000000510000-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	2024-11-20_ed554618ea79aac7ee409d66bf98b3c9_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 3764 wrote to memory of 2164	3764	2024-11-20_ed554618ea79aac7ee409d66bf98b3c9_cryptolocker.exe	84
PID 3764 wrote to memory of 2164	3764	2024-11-20_ed554618ea79aac7ee409d66bf98b3c9_cryptolocker.exe	84
PID 3764 wrote to memory of 2164	3764	2024-11-20_ed554618ea79aac7ee409d66bf98b3c9_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-11-20_ed554618ea79aac7ee409d66bf98b3c9_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-11-20_ed554618ea79aac7ee409d66bf98b3c9_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3764
- 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:2164

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
36KB

MD5
859db113806570a3741d204aa039a82f

SHA1
daedc6c5d55650a9f90dc00e9491a05c6d24991d

SHA256
0d7def03c16dc5ed1cca24de95278c488de94a9391ea39e4ec51ec5127ad62c4

SHA512
c75fd0f4f2b7d5aec76495bc7e56af354358983804aa1e4c7f806f35299cc01b601efa238efe66d9ada52a9f9d5f551f0a67f51bbfd3879da5ee1ea3fcda1b64

Download Submit
memory/2164-19-0x0000000000570000-0x0000000000576000-memory.dmp

Filesize
24KB

Download
memory/2164-20-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/2164-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3764-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3764-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/3764-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/3764-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/3764-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download