f2b79da2bc338b7a39e5eda1d44e9f02da530fbec2f854a8eb766c9e6b3d8d44

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, 05:11

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General

Target

2024-10-10_913d79ed415cf23fa0da3a26dc621187_cryptolocker.exe
Size

40KB
MD5

913d79ed415cf23fa0da3a26dc621187
SHA1

636a27cdb8ff886747f4b82430c5384b09378845
SHA256

f2b79da2bc338b7a39e5eda1d44e9f02da530fbec2f854a8eb766c9e6b3d8d44
SHA512

85bc4cdbfced086dfdbb40ed8524c7c5118660e2a7a938255a8042f2f828bc174bcf70ab95035dfe51c9f516ead215297f9f18d407ef13fd8433ecf99b458c49
SSDEEP

768:qTVbxjgQNQXtckstOOtEvwDpjAaD3TUogs/VXpAPWRiQ:qTJu9cvMOtEvwDpjppVXzRh

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-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	2024-10-10_913d79ed415cf23fa0da3a26dc621187_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4864	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2256-0-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/files/0x000c000000023b0c-13.dat	upx
behavioral2/memory/2256-18-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/memory/4864-27-0x0000000000500000-0x000000000050F000-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	2024-10-10_913d79ed415cf23fa0da3a26dc621187_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 2256 wrote to memory of 4864	2256	2024-10-10_913d79ed415cf23fa0da3a26dc621187_cryptolocker.exe	85
PID 2256 wrote to memory of 4864	2256	2024-10-10_913d79ed415cf23fa0da3a26dc621187_cryptolocker.exe	85
PID 2256 wrote to memory of 4864	2256	2024-10-10_913d79ed415cf23fa0da3a26dc621187_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-10-10_913d79ed415cf23fa0da3a26dc621187_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-10-10_913d79ed415cf23fa0da3a26dc621187_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2256
- 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:4864

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
40KB

MD5
17ee7644cd45241455d0d887c5ba8177

SHA1
9467228fba2a62461b1e526e6ed0efec190c2505

SHA256
5041ea7e83ac8bf9298b2655fc4877d04a3dc93b5d448ca1bff139bd1fbb13c9

SHA512
e06c395b23e94d4e91cd231637e5a59f8c33348b0437f7fb7ea3e42274b23e5c81a3f5a3d5f99427fc8872aa021f2655b39b4155331002c0cd6b6421c1d7f1d9

Download Submit
memory/2256-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2256-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/2256-2-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/2256-3-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/2256-18-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/4864-20-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4864-21-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/4864-27-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download