47d5686c75824615f5e91a6dc2948deadd38595a71a7bc0a58d584a409a6a633

Analysis

max time kernel
141s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
15/03/2024, 21:26

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-03-15_1d95ff217eae1a2c19800ce4b1121e51_cryptolocker.exe
Size

89KB
MD5

1d95ff217eae1a2c19800ce4b1121e51
SHA1

453b92402f79a06399eb4936341f95fb03951197
SHA256

47d5686c75824615f5e91a6dc2948deadd38595a71a7bc0a58d584a409a6a633
SHA512

c13f151da0f338c90bff01a9a5c3baf5b0127406c4a9820b28bbbc3a7facaae5833db295bdebd0e8a97f0475b108d85449c992ac312acfe5c8567262f3a6ad4d
SSDEEP

1536:V6QFElP6n+gMQMOtEvwDpjQGYQbN/PKwMgq:V6a+pOtEvwDpjtz2

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000400000002271f-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000400000002271f-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	2024-03-15_1d95ff217eae1a2c19800ce4b1121e51_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3936	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 4132 wrote to memory of 3936	4132	2024-03-15_1d95ff217eae1a2c19800ce4b1121e51_cryptolocker.exe	96
PID 4132 wrote to memory of 3936	4132	2024-03-15_1d95ff217eae1a2c19800ce4b1121e51_cryptolocker.exe	96
PID 4132 wrote to memory of 3936	4132	2024-03-15_1d95ff217eae1a2c19800ce4b1121e51_cryptolocker.exe	96

C:\Users\Admin\AppData\Local\Temp\2024-03-15_1d95ff217eae1a2c19800ce4b1121e51_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-15_1d95ff217eae1a2c19800ce4b1121e51_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4132
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3936

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=3768 --field-trial-handle=3088,i,14310325015283915034,7660943942870463106,262144 --variations-seed-version /prefetch:8
1⤵
PID:4708

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

Loading Replay Monitor...

Downloads

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

Filesize
89KB

MD5
c97e76d9d6d9e1460b2f3cc5343cb23a

SHA1
636811da5611bed1ddc32e65ff7d2a0fccb77ef4

SHA256
5337c93bd623abb271331b0687c4169e009e18f51f0365e6bda4d1036a130e93

SHA512
7901a545660227d02447014540fd2e3c9e00ed391a5bcc78f6b4f072a059dc1d0c74db29df6dedbb62b9049457060ce0a7d6b0709a1e5b1482b76e4a9e6e1c12

Download Submit
memory/3936-19-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/3936-17-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/4132-0-0x00000000021C0000-0x00000000021C6000-memory.dmp

Filesize
24KB

Download
memory/4132-1-0x00000000021C0000-0x00000000021C6000-memory.dmp

Filesize
24KB

Download
memory/4132-2-0x0000000002050000-0x0000000002056000-memory.dmp

Filesize
24KB

Download