374225d40642940cc0688afd42e04a2053f995c3a129d1157779a7e34cf0f1b0

Analysis

max time kernel
150s
max time network
157s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
05/03/2024, 05:32

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General

Target

2024-03-05_ee92ed8d8620fb2e4dbf32aaebdf1b86_cryptolocker.exe
Size

52KB
MD5

ee92ed8d8620fb2e4dbf32aaebdf1b86
SHA1

be0c99a55f261ece69cf3f4bd8392ec551d74990
SHA256

374225d40642940cc0688afd42e04a2053f995c3a129d1157779a7e34cf0f1b0
SHA512

418d42a5e9a1759f78f1dc1b9ed205897ae788e863146b09a3691838bab314242f25654ee44e97bafc8bbc3130687333ff40709681014807bd8b8a9024cb355d
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/BtOOtEvwDpjBVaD3E09vaTiSfQaV2LJQ:X6QFElP6n+gJBMOtEvwDpjBtE1yILJQ

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000800000002331e-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000800000002331e-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-1-5-21-1904519900-954640453-4250331663-1000\Control Panel\International\Geo\Nation	2024-03-05_ee92ed8d8620fb2e4dbf32aaebdf1b86_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2376	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 1084 wrote to memory of 2376	1084	2024-03-05_ee92ed8d8620fb2e4dbf32aaebdf1b86_cryptolocker.exe	98
PID 1084 wrote to memory of 2376	1084	2024-03-05_ee92ed8d8620fb2e4dbf32aaebdf1b86_cryptolocker.exe	98
PID 1084 wrote to memory of 2376	1084	2024-03-05_ee92ed8d8620fb2e4dbf32aaebdf1b86_cryptolocker.exe	98

C:\Users\Admin\AppData\Local\Temp\2024-03-05_ee92ed8d8620fb2e4dbf32aaebdf1b86_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-05_ee92ed8d8620fb2e4dbf32aaebdf1b86_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1084
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2376

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=1380 --field-trial-handle=2496,i,15897292497548307209,13920214570023230813,262144 --variations-seed-version /prefetch:8
1⤵
PID:4672

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
52KB

MD5
4be937b6959df3282c6aff92969e28eb

SHA1
1e4c32d52a8efd9ec49fd194f8c59eea369b1487

SHA256
1c199efa0f1d1137ab9bfd133c4cc42eaa2d0380bf09e28112f876cc3f50eaa7

SHA512
b077d6ef8d2fc4f8920f8cc6216b3a18d3542b8790c9d8a65f9ee5fd077310865c80bfdcac25a9f6de0db8267d30bf0d7216db1dda06c5d1d6f95931b5c04a3c

Download Submit
memory/1084-0-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/1084-1-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/1084-2-0x00000000021C0000-0x00000000021C6000-memory.dmp

Filesize
24KB

Download
memory/2376-17-0x0000000000640000-0x0000000000646000-memory.dmp

Filesize
24KB

Download