ba71b32eb2a35e79b50a91c4e934421228161422fb56ada3fa132386e46aab56

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
12-06-2024 18:25

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General

Target

2024-06-12_0e9c1b6c3f65725edc94a274e1cd3afc_cryptolocker.exe
Size

71KB
MD5

0e9c1b6c3f65725edc94a274e1cd3afc
SHA1

5020ea0369d4464491edb5833768407c1d03c7b9
SHA256

ba71b32eb2a35e79b50a91c4e934421228161422fb56ada3fa132386e46aab56
SHA512

8735eacfbf448e73216eca600926b53a635e5d4ce09918dd2182c951fd26894aeef02999b091ed31739574ce4c12acb09ef446832a4fe89bcec7be818ced7ec4
SSDEEP

768:vQz7yVEhs9+js1SQtOOtEvwDpjz9+4ZPsED3VK2+ZtyOjgO4r9vFAg2rq2g1B/R3:vj+jsMQMOtEvwDpj5HZYTjipvF24/

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00090000000235e3-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x00090000000235e3-12.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-1-5-21-1181767204-2009306918-3718769404-1000\Control Panel\International\Geo\Nation	2024-06-12_0e9c1b6c3f65725edc94a274e1cd3afc_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
5092	misid.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 1072 wrote to memory of 5092	1072	2024-06-12_0e9c1b6c3f65725edc94a274e1cd3afc_cryptolocker.exe	89
PID 1072 wrote to memory of 5092	1072	2024-06-12_0e9c1b6c3f65725edc94a274e1cd3afc_cryptolocker.exe	89
PID 1072 wrote to memory of 5092	1072	2024-06-12_0e9c1b6c3f65725edc94a274e1cd3afc_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-06-12_0e9c1b6c3f65725edc94a274e1cd3afc_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-12_0e9c1b6c3f65725edc94a274e1cd3afc_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1072
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:5092

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=1324,i,13879737908471496610,15335851594401413307,262144 --variations-seed-version --mojo-platform-channel-handle=4320 /prefetch:8
1⤵
PID:1316

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\misid.exe

Filesize
71KB

MD5
f76c3f932d9b23280ffb15c369ebe6d9

SHA1
7abfe4636c809f75b8d4d6e9f3b08f1ab8c05da0

SHA256
26fd8f6e86054d3d86de98571afbee220395a5f3e5234ceddecea5537244beed

SHA512
0334eeadf387939c711c11306772919751e59f4455d73a7d536755aac1991517d8127bcf0daca594228620248d68ce0203487b0bb0b687853a6f313f0a5856b2

Download Submit
memory/1072-0-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/1072-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/1072-8-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/5092-17-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/5092-23-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download