7aacdaa4f7bdaa2a6ad5328e8516876292e692a831e16ccc5a9203baf6fac8a1

Analysis

max time kernel
149s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
31-10-2024 08:23

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General

Target

2024-10-31_23bbdd6a3e88fd920445db41a5b61f8f_cryptolocker.exe
Size

56KB
MD5

23bbdd6a3e88fd920445db41a5b61f8f
SHA1

badef1ce8647e8061a9fb1b8484ace907cf28b4b
SHA256

7aacdaa4f7bdaa2a6ad5328e8516876292e692a831e16ccc5a9203baf6fac8a1
SHA512

cdac5326af5ad8c7daf9eac47da395e7c56e8db12f5eff8378cc6392023b1d3d4a920e49f0fd6531f2252e039454f0f6250301a9bfccb67810575a457974e237
SSDEEP

768:z6LsoEEeegiZPvEhHSG+gzum/kLyMro2GtOOtEvwDpj/YY1J+OTOkgL:z6QFElP6n+gKmddpMOtEvwDpj31ikgL

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-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation	2024-10-31_23bbdd6a3e88fd920445db41a5b61f8f_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1996	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4264-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x00040000000229c7-13.dat	upx
behavioral2/memory/4264-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/1996-25-0x0000000000500000-0x0000000000510000-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	2024-10-31_23bbdd6a3e88fd920445db41a5b61f8f_cryptolocker.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4264 wrote to memory of 1996	4264	2024-10-31_23bbdd6a3e88fd920445db41a5b61f8f_cryptolocker.exe	87
PID 4264 wrote to memory of 1996	4264	2024-10-31_23bbdd6a3e88fd920445db41a5b61f8f_cryptolocker.exe	87
PID 4264 wrote to memory of 1996	4264	2024-10-31_23bbdd6a3e88fd920445db41a5b61f8f_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-10-31_23bbdd6a3e88fd920445db41a5b61f8f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-10-31_23bbdd6a3e88fd920445db41a5b61f8f_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4264
- 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:1996

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
56KB

MD5
a07a75131a68e7c4160b465011c892b5

SHA1
298a1228be50b736d98bf6644cd6d33f215ad520

SHA256
8bcc7f80284b92d501247606efc70c1a3e13ef9da6f1e503e605b7e54eb2188d

SHA512
d1b67d2108e7395d0bd99f9946907a351a2bd9c160f7532d5bbf886c8dca8a2ad9540b79073e342a19801e432fa0a20c8cf4bc21cc956f72816fae902b40605f

Download Submit
memory/1996-19-0x00000000007E0000-0x00000000007E6000-memory.dmp

Filesize
24KB

Download
memory/1996-25-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4264-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4264-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/4264-2-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/4264-3-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/4264-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download