ad5d88f084f6d9406706dc63843355f72f23db44c5198b1226256846a747abef

Analysis

max time kernel
145s
max time network
162s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
18/04/2024, 08:29

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General

Target

2024-04-18_5f79b904f3c933ba01f0942611170409_cryptolocker.exe
Size

41KB
MD5

5f79b904f3c933ba01f0942611170409
SHA1

52ddf3b9df48fabdc01ccffd1b1b2061af895afe
SHA256

ad5d88f084f6d9406706dc63843355f72f23db44c5198b1226256846a747abef
SHA512

56ce8e137752166dd02257faa4fc8ab6cc208b25218a3c5388db46c02571c7e4be5cef85f9a9277662ae45d23d1c7e78f849331649e04e2384ca93fac3c0bb2c
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBVaD3TP7DFHuRcU:X6QFElP6n+gJQMOtEvwDpjBmzDkWU

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000800000002323a-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000800000002323a-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	2024-04-18_5f79b904f3c933ba01f0942611170409_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3976	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 648 wrote to memory of 3976	648	2024-04-18_5f79b904f3c933ba01f0942611170409_cryptolocker.exe	90
PID 648 wrote to memory of 3976	648	2024-04-18_5f79b904f3c933ba01f0942611170409_cryptolocker.exe	90
PID 648 wrote to memory of 3976	648	2024-04-18_5f79b904f3c933ba01f0942611170409_cryptolocker.exe	90

C:\Users\Admin\AppData\Local\Temp\2024-04-18_5f79b904f3c933ba01f0942611170409_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-18_5f79b904f3c933ba01f0942611170409_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:648
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3976

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=4124 --field-trial-handle=1928,i,13242902252791919845,10377620236057253993,262144 --variations-seed-version /prefetch:8
1⤵
PID:2204

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
41KB

MD5
8ba74f19e2f1f64a899edd5449ec2b35

SHA1
3353a3526cf5ffa7f427a3c6fb74f7d7586bb69f

SHA256
8bd754b653bd8f8d9e9401d885b4e5f4fe6a21e98078714fb676d8a4fe62c9ee

SHA512
53bd074ac98cf21469b9db1db610d53983a48c60e60c5baf1f1507026d33018fb4eeb721a18452a6fd43be8ad17a2f81f48896d0d796b96bb4566593c69313ac

Download Submit
memory/648-1-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/648-0-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/648-2-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/3976-17-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download
memory/3976-18-0x0000000002000000-0x0000000002006000-memory.dmp

Filesize
24KB

Download