58d138283ef3676131d2c65af3424bc33f5b22708cc894ef075ed266f421838b

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
13-10-2024 02:29

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General

Target

2024-10-13_3f038552370af98a333ba92f99491f84_cryptolocker.exe
Size

64KB
MD5

3f038552370af98a333ba92f99491f84
SHA1

eee4ef66bd88c180acdbc40329a296acc8095910
SHA256

58d138283ef3676131d2c65af3424bc33f5b22708cc894ef075ed266f421838b
SHA512

f9933b9ab99c766ef8541bd66d3c665166739f77ebba0ceb2ea4b49be75ee87b9e4b728cce3c4737b17c1199de5dcd16344fec1d77bb0e313d62da76c4aed4e2
SSDEEP

768:P8mnjO6LsoEEeegiZPvEhHSG+gbum/kLyMro2GtOOtEvwDpjKvWxHCbSVaFn0jKf:P8mnK6QFElP6n+gymddpMOtEvwDpjYM4

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-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	2024-10-13_3f038552370af98a333ba92f99491f84_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1808	asih.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1100-0-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral2/files/0x000c000000023b6f-13.dat	upx
behavioral2/memory/1808-17-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral2/memory/1100-18-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral2/memory/1808-27-0x0000000000500000-0x000000000050F311-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	2024-10-13_3f038552370af98a333ba92f99491f84_cryptolocker.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1100 wrote to memory of 1808	1100	2024-10-13_3f038552370af98a333ba92f99491f84_cryptolocker.exe	85
PID 1100 wrote to memory of 1808	1100	2024-10-13_3f038552370af98a333ba92f99491f84_cryptolocker.exe	85
PID 1100 wrote to memory of 1808	1100	2024-10-13_3f038552370af98a333ba92f99491f84_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-10-13_3f038552370af98a333ba92f99491f84_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-10-13_3f038552370af98a333ba92f99491f84_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1100
- 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:1808

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
64KB

MD5
b949abca88eb2ba79a08c5c34149b3d9

SHA1
dd1f49bbc0a71cd7ccc673158a268f2d9554d6d1

SHA256
9a8d30966024d5f4d5abcfbce1c90536393cfd3d8f0f8189fee90979cb48d53c

SHA512
8cdf7aa2f633013768321e02ae01fd318f0cd29a43da64d3d6eafa98943b6a9642d4b7081868dc7e1f7156913636bdcce0aa93ebc56e004060a6d2ebfa183e57

Download Submit
memory/1100-0-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/1100-1-0x0000000002150000-0x0000000002156000-memory.dmp

Filesize
24KB

Download
memory/1100-2-0x0000000002150000-0x0000000002156000-memory.dmp

Filesize
24KB

Download
memory/1100-3-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download
memory/1100-18-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/1808-17-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/1808-21-0x00000000006D0000-0x00000000006D6000-memory.dmp

Filesize
24KB

Download
memory/1808-20-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/1808-27-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download