2bb78a85f71a64099e592cfc2563cddcbbf8f6d0c462efce372458f6701e0b6e

Analysis

max time kernel
148s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
07/09/2024, 00:59

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General

Target

2024-09-07_5f51e98b59808c119765198de520b3c1_cryptolocker.exe
Size

62KB
MD5

5f51e98b59808c119765198de520b3c1
SHA1

89f0910096bdd7cae77b60779a202aeacf1f3021
SHA256

2bb78a85f71a64099e592cfc2563cddcbbf8f6d0c462efce372458f6701e0b6e
SHA512

3dba9aaeeb4d34d25711819475432e8a3f8c6041ec302ab734c4c01cb142bf5a57e14541d7dec7acf30d79b8dac65f564e96950db9a6333538b970caf60a92f2
SSDEEP

1536:f6QFElP6n+g9u9cvMOtEvwDpjnpVXzRD6:f6a+1SEOtEvwDpjB2

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-1-5-21-1302416131-1437503476-2806442725-1000\Control Panel\International\Geo\Nation	2024-09-07_5f51e98b59808c119765198de520b3c1_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3428	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4148-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x000900000002346d-13.dat	upx
behavioral2/memory/4148-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/3428-25-0x0000000000500000-0x0000000000510000-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	2024-09-07_5f51e98b59808c119765198de520b3c1_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 4148 wrote to memory of 3428	4148	2024-09-07_5f51e98b59808c119765198de520b3c1_cryptolocker.exe	84
PID 4148 wrote to memory of 3428	4148	2024-09-07_5f51e98b59808c119765198de520b3c1_cryptolocker.exe	84
PID 4148 wrote to memory of 3428	4148	2024-09-07_5f51e98b59808c119765198de520b3c1_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-09-07_5f51e98b59808c119765198de520b3c1_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-07_5f51e98b59808c119765198de520b3c1_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4148
- 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:3428

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
62KB

MD5
fef6c2f2d3622e1d4d43621b23e7d2cb

SHA1
8d6f3a024d67503b233249bdd6560b92ec43905e

SHA256
f663b7763d91674facdaad420f92917ddec10e50e80bf25d0082d4d821d8cc1e

SHA512
065e3b7ae736fc957544131dd39f558c837c02193af482205dad17bff57e38c3b23a1e325f6e8f1fde345887675573561f74f8b974a2177b6f1ea321ff582e23

Download Submit
memory/3428-19-0x00000000005D0000-0x00000000005D6000-memory.dmp

Filesize
24KB

Download
memory/3428-25-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4148-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4148-1-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/4148-2-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/4148-3-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download
memory/4148-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download