2f40c2ed52ca234a6ab4f459b2d032f0822eac1a184a5c94d378f8ae0611b16f

Analysis

max time kernel
149s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
29/05/2024, 06:49

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General

Target

2024-05-29_b0c90971bf02a4326696cf3fa6213491_cryptolocker.exe
Size

74KB
MD5

b0c90971bf02a4326696cf3fa6213491
SHA1

a4f75283249a405e8b245c3a3a29ede3d1897c04
SHA256

2f40c2ed52ca234a6ab4f459b2d032f0822eac1a184a5c94d378f8ae0611b16f
SHA512

272e5d97f60a63473d2a620703c8ba965f09867ddf2de0672f8b83b136dc4a5842969e0edf8e772be76890aa7046ba11752de3555dd516828188590b03602c60
SSDEEP

768:u6LsoEEeegiZPvEhHSG+gZgtOOtEvwDpjeY10Y/YMsPn:u6QFElP6n+gWMOtEvwDpjJGYQb/

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023276-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023276-12.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	2024-05-29_b0c90971bf02a4326696cf3fa6213491_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1904	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 4764 wrote to memory of 1904	4764	2024-05-29_b0c90971bf02a4326696cf3fa6213491_cryptolocker.exe	91
PID 4764 wrote to memory of 1904	4764	2024-05-29_b0c90971bf02a4326696cf3fa6213491_cryptolocker.exe	91
PID 4764 wrote to memory of 1904	4764	2024-05-29_b0c90971bf02a4326696cf3fa6213491_cryptolocker.exe	91

C:\Users\Admin\AppData\Local\Temp\2024-05-29_b0c90971bf02a4326696cf3fa6213491_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-29_b0c90971bf02a4326696cf3fa6213491_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4764
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1904

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=4240 --field-trial-handle=2656,i,16940681401824032220,151921362336696246,262144 --variations-seed-version /prefetch:8
1⤵
PID:404

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
74KB

MD5
eb59719dfa6441f94ab5d6b8fa36f8ec

SHA1
92fc6173978403a71ca6b80282dae33f70ce98fc

SHA256
933ae76e4d74771b7d3818df4a80da22d881a0210aa60093ee281cc50de2c317

SHA512
55c3578ee96ed1b5da52350eaad6c2d0f4a090ff17a832a9c7033495f33ea4572db385099426940553966ec466b0e866326e678abeffbf8b48f9867011339612

Download Submit
memory/1904-23-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/4764-0-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/4764-1-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/4764-2-0x00000000006D0000-0x00000000006D6000-memory.dmp

Filesize
24KB

Download