d711db3d7e989a9619ec7295cb21737e7e9128363fd2713aed709eac4523c832

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
21/09/2024, 09:26

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General

Target

2024-09-21_1a972231b442257c7499f983d1f54993_cryptolocker.exe
Size

62KB
MD5

1a972231b442257c7499f983d1f54993
SHA1

5d5c230f3a23e03e2071bf0cd83dd352261383c4
SHA256

d711db3d7e989a9619ec7295cb21737e7e9128363fd2713aed709eac4523c832
SHA512

e52789ce80e53a617d08df4de915fd5da8998d2fc1bcfe7a441c60620ce410b930b3f2468d4d73a94422a97cf7c2a4b9f4af2e3451689a22eb068d4317ec4c84
SSDEEP

1536:P8mnK6QFElP6n+gymddpMOtEvwDpjYXUXoj5:1nK6a+qdOOtEvwDpjc

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-1-5-21-355097885-2402257403-2971294179-1000\Control Panel\International\Geo\Nation	2024-09-21_1a972231b442257c7499f983d1f54993_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2428	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2152-0-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral2/files/0x0008000000023452-13.dat	upx
behavioral2/memory/2152-16-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral2/memory/2428-26-0x0000000000500000-0x000000000050F311-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	2024-09-21_1a972231b442257c7499f983d1f54993_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 2152 wrote to memory of 2428	2152	2024-09-21_1a972231b442257c7499f983d1f54993_cryptolocker.exe	81
PID 2152 wrote to memory of 2428	2152	2024-09-21_1a972231b442257c7499f983d1f54993_cryptolocker.exe	81
PID 2152 wrote to memory of 2428	2152	2024-09-21_1a972231b442257c7499f983d1f54993_cryptolocker.exe	81

C:\Users\Admin\AppData\Local\Temp\2024-09-21_1a972231b442257c7499f983d1f54993_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-21_1a972231b442257c7499f983d1f54993_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2152
- 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:2428

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
9b29efeddb1ffdfcf42aa84bfd78daee

SHA1
1fff3f0e9ab10e0def4693fba835b818c362da42

SHA256
485104bb34f6f3d4f3368d15d1b509540e3e7c21ea8880c56116753ac32e3e27

SHA512
b12da49cfda964e5bf97105e436e9c2fd21f28cd99c10236d9a0d39362457e99967361fbe6cdef7441ba721a55a71a0c7ebda3cc2e1e53f746c0384827941bdb

Download Submit
memory/2152-0-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/2152-1-0x00000000004C0000-0x00000000004C6000-memory.dmp

Filesize
24KB

Download
memory/2152-2-0x00000000004C0000-0x00000000004C6000-memory.dmp

Filesize
24KB

Download
memory/2152-3-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/2152-16-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/2428-20-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/2428-19-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/2428-26-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download