fc260cb40166b3ff98f568a4fb217dc586b5039e39c5f80f634d5ee989e8ff34

Analysis

max time kernel
150s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
14/02/2024, 12:44

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General

Target

2024-02-14_cd45417b27d8cfdf53589f29d0f2e4f8_cryptolocker.exe
Size

41KB
MD5

cd45417b27d8cfdf53589f29d0f2e4f8
SHA1

b4672b176619bfee4f6da6d617634c8b3584e186
SHA256

fc260cb40166b3ff98f568a4fb217dc586b5039e39c5f80f634d5ee989e8ff34
SHA512

69c0c82d370123e9cb404de0f856d53710143b39926143ce6a9b6a64d2877db1aafffd2473f532caf4eb7e5a74f19bc37a734f35bc9896a57b0d39f779210d27
SSDEEP

768:bIDOw9UiaCHfjnE0Sf88AvvP1oghYvm9/6Dy8PEM4Z:bIDOw9a0Dwo3P1ojvUSDhcxZ

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023202-12.dat	CryptoLocker_rule2

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-1-5-21-1168293393-3419776239-306423207-1000\Control Panel\International\Geo\Nation	2024-02-14_cd45417b27d8cfdf53589f29d0f2e4f8_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3896	lossy.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 1128 wrote to memory of 3896	1128	2024-02-14_cd45417b27d8cfdf53589f29d0f2e4f8_cryptolocker.exe	85
PID 1128 wrote to memory of 3896	1128	2024-02-14_cd45417b27d8cfdf53589f29d0f2e4f8_cryptolocker.exe	85
PID 1128 wrote to memory of 3896	1128	2024-02-14_cd45417b27d8cfdf53589f29d0f2e4f8_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-02-14_cd45417b27d8cfdf53589f29d0f2e4f8_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-14_cd45417b27d8cfdf53589f29d0f2e4f8_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1128
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  PID:3896

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\lossy.exe

Filesize
41KB

MD5
7e82e6ed4831b04764a8d663abbe9ba0

SHA1
ebded4de7340b2a315561d02b22521b400e9ded4

SHA256
d48e3cc10ad1dc93a707126a32ac8990a8d8b12637656c89aa6cc0cdcadc8a50

SHA512
ee42df0313f4db152443aaab5f83897a963343c5a7fa5ff40df9ebd6a0c314aac7d7a0b3928b8f1c821c2f1358c2fd9257d8aeff7fb97e01bcee4b8ee51ee8b0

Download Submit
memory/1128-0-0x0000000000510000-0x0000000000516000-memory.dmp

Filesize
24KB

Download
memory/1128-1-0x0000000000510000-0x0000000000516000-memory.dmp

Filesize
24KB

Download
memory/1128-2-0x0000000000530000-0x0000000000536000-memory.dmp

Filesize
24KB

Download
memory/3896-17-0x00000000020F0000-0x00000000020F6000-memory.dmp

Filesize
24KB

Download
memory/3896-23-0x00000000020C0000-0x00000000020C6000-memory.dmp

Filesize
24KB

Download