3d7daf4559dd5424ce4bf14d0f07df69fd824bdb3876d54dbb12a6b3fb3bceed

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
15/09/2024, 02:55

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General

Target

2024-09-15_f0ffe05dbd8e4cb4424b9783e2dc15c0_cryptolocker.exe
Size

79KB
MD5

f0ffe05dbd8e4cb4424b9783e2dc15c0
SHA1

31711648cb145424fb0f746fbe7670949a21b81b
SHA256

3d7daf4559dd5424ce4bf14d0f07df69fd824bdb3876d54dbb12a6b3fb3bceed
SHA512

948f27f195af8405ab6e0d33db399485f9adccaeb6ae7fc359d49a97cd5d586feb1b59fb95dde24637a8163db4311a74eee437c791585a9b356249450f009cd9
SSDEEP

1536:T6QFElP6n+gxmddpMOtEvwDpjwaxTNUOAkXtBdxPUxn+2:T6a+rdOOtEvwDpjNtHPA

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	2024-09-15_f0ffe05dbd8e4cb4424b9783e2dc15c0_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1668	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4528-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x000e0000000229ae-13.dat	upx
behavioral2/memory/4528-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/1668-26-0x0000000000500000-0x0000000000510000-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	2024-09-15_f0ffe05dbd8e4cb4424b9783e2dc15c0_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 4528 wrote to memory of 1668	4528	2024-09-15_f0ffe05dbd8e4cb4424b9783e2dc15c0_cryptolocker.exe	87
PID 4528 wrote to memory of 1668	4528	2024-09-15_f0ffe05dbd8e4cb4424b9783e2dc15c0_cryptolocker.exe	87
PID 4528 wrote to memory of 1668	4528	2024-09-15_f0ffe05dbd8e4cb4424b9783e2dc15c0_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-09-15_f0ffe05dbd8e4cb4424b9783e2dc15c0_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-15_f0ffe05dbd8e4cb4424b9783e2dc15c0_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4528
- 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:1668

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
79KB

MD5
2cd10b1bcc24cadf2dea730405313ef1

SHA1
d68eb751783c7b740ceba6b9b838511ffd3d4320

SHA256
06980b228a79e362916208c435c3dd207d297a42140cd1b40a9a18be0fa102df

SHA512
b8bfcb829451acca42f4d48be43fbc805e105eb283b6bdb6c64e1ae7508ddf7707645f7cb245ae10cb623ceafb7f798cc6555a6c723dfa07dffe8b9b1644235a

Download Submit
memory/1668-19-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/1668-20-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/1668-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4528-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4528-1-0x00000000021C0000-0x00000000021C6000-memory.dmp

Filesize
24KB

Download
memory/4528-2-0x00000000021C0000-0x00000000021C6000-memory.dmp

Filesize
24KB

Download
memory/4528-3-0x0000000002060000-0x0000000002066000-memory.dmp

Filesize
24KB

Download
memory/4528-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download