6bf1b61f64ca8143f6adfbfb34a12463c7e384e49d3033bd3683868e970616b9

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
06-03-2024 21:47

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General

Target

2024-03-06_944ccbdfe42b6e1b9ee459a6dc1218f2_cryptolocker.exe
Size

36KB
MD5

944ccbdfe42b6e1b9ee459a6dc1218f2
SHA1

101687bd9fbd714b5e85d7d01006caf81c0e8bb1
SHA256

6bf1b61f64ca8143f6adfbfb34a12463c7e384e49d3033bd3683868e970616b9
SHA512

aeb3da3392a7ed22ea2a6cb4a95c2899697200d97f925fc1b8dbe462787283f6cfc491fd2358e73393d7fd2b88b74d519b714c6ad137d1bdce9b18762a4fe302
SSDEEP

768:wHGGaSawqnwjRQ6ESlmFOsPoOdQtOOtEvwDpjm6WaJIOc+UPPEkeS:YGzl5wjRQBBOsP1QMOtEvwDpjgarrkj

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 3 IoCs

resource	yara_rule
behavioral2/memory/2148-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000400000001e980-13.dat	CryptoLocker_rule2
behavioral2/memory/2148-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral2/memory/2148-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000400000001e980-13.dat	CryptoLocker_set1
behavioral2/memory/2148-17-0x0000000000500000-0x000000000050B000-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-1-5-21-3270530367-132075249-2153716227-1000\Control Panel\International\Geo\Nation	2024-03-06_944ccbdfe42b6e1b9ee459a6dc1218f2_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2352	asih.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 2148 wrote to memory of 2352	2148	2024-03-06_944ccbdfe42b6e1b9ee459a6dc1218f2_cryptolocker.exe	89
PID 2148 wrote to memory of 2352	2148	2024-03-06_944ccbdfe42b6e1b9ee459a6dc1218f2_cryptolocker.exe	89
PID 2148 wrote to memory of 2352	2148	2024-03-06_944ccbdfe42b6e1b9ee459a6dc1218f2_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-03-06_944ccbdfe42b6e1b9ee459a6dc1218f2_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-06_944ccbdfe42b6e1b9ee459a6dc1218f2_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2148
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2352

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\asih.exe

Filesize
36KB

MD5
b2fd2a2e84e49667fd236886d30382cb

SHA1
e6a59732d898663f4baa650143a0194aa97c90d3

SHA256
283bc6bf615db7ebe678e24678dbac5ddb970d37f4bb23a5b4b5094bd81bd847

SHA512
f78e3c626e56e3ebb420ffa85263defbebc96aac56f796eb9f4ddec5f1d5a600f87b25f902ce036816d4e8c34ceb90d13b199b9d0683cdfe12171b06ff21886a

Download Submit
memory/2148-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2148-1-0x0000000000620000-0x0000000000626000-memory.dmp

Filesize
24KB

Download
memory/2148-2-0x0000000000620000-0x0000000000626000-memory.dmp

Filesize
24KB

Download
memory/2148-3-0x0000000000750000-0x0000000000756000-memory.dmp

Filesize
24KB

Download
memory/2148-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2352-19-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/2352-22-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download