c2c8b94222d6b6f2852fadf3f39ff4d5b3a7d101db2e4c98d52d43f704328bb3

Analysis

max time kernel
150s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
29/02/2024, 03:34

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General

Target

2024-02-29_4d236f66e7d9c23437712012d66dd5f7_cryptolocker.exe
Size

35KB
MD5

4d236f66e7d9c23437712012d66dd5f7
SHA1

b05450473b9d05cd55bd8901811bda896527e683
SHA256

c2c8b94222d6b6f2852fadf3f39ff4d5b3a7d101db2e4c98d52d43f704328bb3
SHA512

3db31befc0978e67acfdd01f4c009326412d90dd48c19ab1c4493c2335efd8fa9f339831bbaff67cf74ee47f53436f3f941181f6bee16f7a4592db869f82a9d8
SSDEEP

768:bxNQIE0eBhkL2Fo1CCwgfjOg1tsJ6zeen7JEgx3x:bxNrC7kYo1Fxf3s06g3

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023257-12.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-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	2024-02-29_4d236f66e7d9c23437712012d66dd5f7_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
456	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 4908 wrote to memory of 456	4908	2024-02-29_4d236f66e7d9c23437712012d66dd5f7_cryptolocker.exe	99
PID 4908 wrote to memory of 456	4908	2024-02-29_4d236f66e7d9c23437712012d66dd5f7_cryptolocker.exe	99
PID 4908 wrote to memory of 456	4908	2024-02-29_4d236f66e7d9c23437712012d66dd5f7_cryptolocker.exe	99

C:\Users\Admin\AppData\Local\Temp\2024-02-29_4d236f66e7d9c23437712012d66dd5f7_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-29_4d236f66e7d9c23437712012d66dd5f7_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4908
- C:\Users\Admin\AppData\Local\Temp\pissa.exe
  "C:\Users\Admin\AppData\Local\Temp\pissa.exe"
  2⤵
  - Executes dropped EXE
  PID:456

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=4136 --field-trial-handle=3192,i,2785050981002401924,4037047756083432660,262144 --variations-seed-version /prefetch:8
1⤵
PID:732

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
7b32cecfe490d5be00855b3111ea6f80

SHA1
939f55d33d34dae753282c1d94e2b75e1ba2463d

SHA256
4be0215d473db1acfdb08a30bf3a11307c4a556eb95a02c8b5adff8c88afa697

SHA512
46bc14743b8c08b89d655e3417207fddcb2d1d164c375ba8aaaedd9f2cf8855e007d124d4c89c85037d5eb621c573c8e839a97d9efbfb11e158b93b399cf2ae8

Download Submit
memory/456-17-0x0000000002190000-0x0000000002196000-memory.dmp

Filesize
24KB

Download
memory/456-18-0x0000000002160000-0x0000000002166000-memory.dmp

Filesize
24KB

Download
memory/4908-0-0x0000000000730000-0x0000000000736000-memory.dmp

Filesize
24KB

Download
memory/4908-1-0x0000000000730000-0x0000000000736000-memory.dmp

Filesize
24KB

Download
memory/4908-2-0x0000000000770000-0x0000000000776000-memory.dmp

Filesize
24KB

Download