a13e7c559b6a399054efdf12e5cfafdea32196f776d8204a57d519e6a67ba33f

Analysis

max time kernel
152s
max time network
168s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
21/04/2024, 03:40

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General

Target

2024-04-21_260ea7cf410381344be6baa15c545efe_cryptolocker.exe
Size

60KB
MD5

260ea7cf410381344be6baa15c545efe
SHA1

b08995483f9358d841e4954d45a2e63e8df34319
SHA256

a13e7c559b6a399054efdf12e5cfafdea32196f776d8204a57d519e6a67ba33f
SHA512

3de90fd7ee0f91b98157ed6b3a8dd96ffb16184e245041b4dc5475148053c8dfb886dc6ca6d041c7eed26421b22bee6c78c7a3ee7e86c3d2042c39b7f93e73e9
SSDEEP

768:3Uz7yVEhs9+Hs1SQtOOtEvwDpjO9+4hdCY8EQMjpi/Wpi3B3URiLqCyLuAx8XG9b:3P+HsMQMOtEvwDpjoHy7B3g9CWuAxW2

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/5004-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/5004-10-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000900000002325f-14.dat	CryptoLocker_rule2
behavioral2/memory/1504-26-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/5004-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/memory/5004-10-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000900000002325f-14.dat	CryptoLocker_set1
behavioral2/memory/1504-26-0x0000000000500000-0x000000000050B000-memory.dmp	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	2024-04-21_260ea7cf410381344be6baa15c545efe_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1504	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 5004 wrote to memory of 1504	5004	2024-04-21_260ea7cf410381344be6baa15c545efe_cryptolocker.exe	94
PID 5004 wrote to memory of 1504	5004	2024-04-21_260ea7cf410381344be6baa15c545efe_cryptolocker.exe	94
PID 5004 wrote to memory of 1504	5004	2024-04-21_260ea7cf410381344be6baa15c545efe_cryptolocker.exe	94

C:\Users\Admin\AppData\Local\Temp\2024-04-21_260ea7cf410381344be6baa15c545efe_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-21_260ea7cf410381344be6baa15c545efe_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:5004
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:1504

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=5164 --field-trial-handle=3084,i,4016110471176367543,14287608422419064331,262144 --variations-seed-version /prefetch:8
1⤵
PID:4412

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
61KB

MD5
015dbe7b03bbdd47e42052a46f58136a

SHA1
2ccc9ef6b39f2bd3508d300f14ad33201cb4c1e3

SHA256
2cf5e1082ca28b531d32e029ee4d7dfcd2df3ff249e9e658bdcc44ae654d78a4

SHA512
2538ee3d4798e3c7e39b61f2270120083af6b871c4615602607dfbbf3033122a52fe8f0626e65c7922dd4369d21ac5ee6b41db1963c9da6d6258de67a5637b36

Download Submit
memory/1504-19-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/1504-26-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/5004-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/5004-1-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/5004-2-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/5004-3-0x0000000002080000-0x0000000002086000-memory.dmp

Filesize
24KB

Download
memory/5004-10-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download