75ac117ec426ca5fe02ad86295598b9d63375e243c1d29d73efce9f365cac19a

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
26/08/2024, 06:32

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General

Target

2024-08-26_35a6f716acd755dc224f976dd0818fbc_cryptolocker.exe
Size

92KB
MD5

35a6f716acd755dc224f976dd0818fbc
SHA1

94d12d233f7f7ee1d1d042d97aba385deffeff90
SHA256

75ac117ec426ca5fe02ad86295598b9d63375e243c1d29d73efce9f365cac19a
SHA512

778d723ef9ab1674de5a3cd16398b4906a2877b6ff29b17350a6e9e9ba34f01108a4b7bbb3e73fc363b442f2d0dc8835f04924ed33722265c41f6b4caa27aac3
SSDEEP

1536:n6QFElP6n+g9u9cvMOtEvwDpjYYTjipvF2bx1PQAe/:n6a+1SEOtEvwDpjYYvQd2PG

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-1-5-21-2392887640-1187051047-2909758433-1000\Control Panel\International\Geo\Nation	2024-08-26_35a6f716acd755dc224f976dd0818fbc_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4828	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3288-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x0009000000023459-13.dat	upx
behavioral2/memory/3288-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/4828-25-0x0000000000500000-0x0000000000510000-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	2024-08-26_35a6f716acd755dc224f976dd0818fbc_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 3288 wrote to memory of 4828	3288	2024-08-26_35a6f716acd755dc224f976dd0818fbc_cryptolocker.exe	83
PID 3288 wrote to memory of 4828	3288	2024-08-26_35a6f716acd755dc224f976dd0818fbc_cryptolocker.exe	83
PID 3288 wrote to memory of 4828	3288	2024-08-26_35a6f716acd755dc224f976dd0818fbc_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-08-26_35a6f716acd755dc224f976dd0818fbc_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-08-26_35a6f716acd755dc224f976dd0818fbc_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3288
- 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:4828

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
92KB

MD5
345599072855b5714b312bb63efca419

SHA1
9016f4d0a7d3ed9431b8d0eaeb14cfb68595dbc8

SHA256
41afc1dccea33f2a341955db8d5c4816a7be0d322d0fa87b33ed8fe4154c288e

SHA512
8178cea7d43136673f538633c75850764c54de3cf464ba3330420934d5ba60c4dcf358fe8aa7233e8c502faa1d8ae02b1187afb553ac4360f5ccc991761ffdd9

Download Submit
memory/3288-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3288-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/3288-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/3288-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/3288-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4828-25-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download