1a23de75ff7f1c7006f06b667fcead5149670e787143d3d86c4eba6a6c748a88

Analysis

max time kernel
146s
max time network
161s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
06/03/2024, 06:34

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General

Target

2024-03-06_c62887970971e4dc35005e96a634eab3_cryptolocker.exe
Size

72KB
MD5

c62887970971e4dc35005e96a634eab3
SHA1

0c27ee52e0437380108e98dcb5a00b7460a35c1b
SHA256

1a23de75ff7f1c7006f06b667fcead5149670e787143d3d86c4eba6a6c748a88
SHA512

c69a341787391338b41584a258fc70c20988f6bf5ac48b29964639a4369ead5f40b35e93987ede3d668caab566ceaa36628d95dafe3ab8381c20297da4e87fd3
SSDEEP

1536:X6QFElP6n+gJQMOtEvwDpjBZYTjipvF2bx1sc:X6a+SOtEvwDpjBZYvQd2v

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0002000000022ea1-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0002000000022ea1-12.dat	CryptoLocker_set1

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-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	2024-03-06_c62887970971e4dc35005e96a634eab3_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4072	asih.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1960 wrote to memory of 4072	1960	2024-03-06_c62887970971e4dc35005e96a634eab3_cryptolocker.exe	100
PID 1960 wrote to memory of 4072	1960	2024-03-06_c62887970971e4dc35005e96a634eab3_cryptolocker.exe	100
PID 1960 wrote to memory of 4072	1960	2024-03-06_c62887970971e4dc35005e96a634eab3_cryptolocker.exe	100

C:\Users\Admin\AppData\Local\Temp\2024-03-06_c62887970971e4dc35005e96a634eab3_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-06_c62887970971e4dc35005e96a634eab3_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1960
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4072

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=3808 --field-trial-handle=2264,i,15001568551143786084,90255922961447677,262144 --variations-seed-version /prefetch:8
1⤵
PID:1168

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
72KB

MD5
1e249dd8d479dd38d9891c70ec392ccb

SHA1
4aa98b43be7f659308c9cc1ec49def197c68b546

SHA256
de3c07d6d846181e2a6fdaf2cdbca22212b28eecb0e733138e934fbb87dca0c2

SHA512
69148273ccf0ba3b048cab8ee8b678f7a6a87b1343a9b244aba84383883cd155dd99e0b19cca84c5215566bddc5c64167a06a14eef1c1e2bc28ddc37ca390ace

Download Submit
memory/1960-0-0x00000000007F0000-0x00000000007F6000-memory.dmp

Filesize
24KB

Download
memory/1960-1-0x00000000007F0000-0x00000000007F6000-memory.dmp

Filesize
24KB

Download
memory/1960-2-0x00000000021B0000-0x00000000021B6000-memory.dmp

Filesize
24KB

Download
memory/4072-17-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download
memory/4072-23-0x0000000002050000-0x0000000002056000-memory.dmp

Filesize
24KB

Download