56067dff8bfcb89920a83fd135034fc7acba6b2f507d6b55f9c1067ab25feb50

Analysis

max time kernel
134s
max time network
127s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
27-05-2024 19:30

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General

Target

2024-05-27_bd1f055cfa24cc95aea571cb27a1e3fe_cryptolocker.exe
Size

35KB
MD5

bd1f055cfa24cc95aea571cb27a1e3fe
SHA1

a9228485f22d16081b0491ab2d669e6cac9d8136
SHA256

56067dff8bfcb89920a83fd135034fc7acba6b2f507d6b55f9c1067ab25feb50
SHA512

272c274846e12aad7d63af7f1832f744a4d6fbb388c8f8517071cc0c19041fbd1903cb6f9f6198911804f3c69cdb062dcc63fc4d23dfac187eb9de7d58c78386
SSDEEP

768:bxNQIE0eBhkL2Fo1CCwgfjOg9Arbkzos5M4gt:bxNrC7kYo1Fxf2rYA3t

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0009000000023540-12.dat	CryptoLocker_rule2

Checks computer location settings 2 TTPs 2 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-1-5-21-1181767204-2009306918-3718769404-1000\Control Panel\International\Geo\Nation	2024-05-27_bd1f055cfa24cc95aea571cb27a1e3fe_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\Control Panel\International\Geo\Nation	pissa.exe

Executes dropped EXE 1 IoCs

pid	Process
4808	pissa.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 3364 wrote to memory of 4808	3364	2024-05-27_bd1f055cfa24cc95aea571cb27a1e3fe_cryptolocker.exe	90
PID 3364 wrote to memory of 4808	3364	2024-05-27_bd1f055cfa24cc95aea571cb27a1e3fe_cryptolocker.exe	90
PID 3364 wrote to memory of 4808	3364	2024-05-27_bd1f055cfa24cc95aea571cb27a1e3fe_cryptolocker.exe	90

C:\Users\Admin\AppData\Local\Temp\2024-05-27_bd1f055cfa24cc95aea571cb27a1e3fe_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-27_bd1f055cfa24cc95aea571cb27a1e3fe_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3364
- C:\Users\Admin\AppData\Local\Temp\pissa.exe
  "C:\Users\Admin\AppData\Local\Temp\pissa.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  PID:4808

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 --field-trial-handle=4164,i,13281073920029625837,8253721632651544158,262144 --variations-seed-version --mojo-platform-channel-handle=4028 /prefetch:8
1⤵
PID:3204

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\pissa.exe

Filesize
35KB

MD5
6ac351f5693d1f40eed970f332e46381

SHA1
f218c482e8fe995c2d223f12dab312a95770e59a

SHA256
735503704a74ce5d7b2b53586e29e451f7346bfed2d4b91737b53fbed1d1b7d2

SHA512
8e62e5fa14dc13311e75510d53651b857fd107483b4c04a1f92b45f2fbae9946bb0a540d878da4c215c1b22bc80696e223727223d83868300fab6c98f17c4c6c

Download Submit
C:\Users\Admin\AppData\Local\Temp\pissec.exe

Filesize
261B

MD5
11bed1c06d8f4680de5154405be20365

SHA1
9c3095f1aa0b02924c23592d1e86673bb0081ca1

SHA256
bcc0582f122db6e61d2aa06628275f5b882c01ca037699427d0f68e48d744666

SHA512
050bb38ff33ab7e8e8aa647cffb26d2b0a54074340e79f0acf0db8f076c421505f1e4c1ce169d55aeacd4085ce258a78d24327c9393650642963beb130517da8

Download Submit
memory/3364-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/3364-1-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download
memory/3364-8-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/4808-17-0x0000000003010000-0x0000000003016000-memory.dmp

Filesize
24KB

Download
memory/4808-23-0x0000000002010000-0x0000000002016000-memory.dmp

Filesize
24KB

Download