782a44ffe551b83e350ec08bda19df1fa63c32ceed25ff4d471abe54ea415daa

Analysis

max time kernel
149s
max time network
155s
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, 17:38

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General

Target

2024-03-06_58696380062ff0521ae71b2e4fd56001_cryptolocker.exe
Size

52KB
MD5

58696380062ff0521ae71b2e4fd56001
SHA1

9fcde7711a7f30669893c144733001e99d6b63da
SHA256

782a44ffe551b83e350ec08bda19df1fa63c32ceed25ff4d471abe54ea415daa
SHA512

0ffcb8d90640231b5c1420970ceba867ddab4dddffc0e6089360832e441fc61cec646ba4367efb9085b1e806d64321d34a557fe23777ddef7edc35c263310931
SSDEEP

768:79inqyNR/QtOOtEvwDpjBK/rJ+Nw8qn8pKIRszXV:79mqyNhQMOtEvwDpjBxe8TpXRSl

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 3 IoCs

resource	yara_rule
behavioral2/memory/1620-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0004000000022747-13.dat	CryptoLocker_rule2
behavioral2/memory/1620-18-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral2/memory/1620-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0004000000022747-13.dat	CryptoLocker_set1
behavioral2/memory/1620-18-0x0000000000500000-0x000000000050F000-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-1-5-21-2727153400-192325109-1870347593-1000\Control Panel\International\Geo\Nation	2024-03-06_58696380062ff0521ae71b2e4fd56001_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1756	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 1620 wrote to memory of 1756	1620	2024-03-06_58696380062ff0521ae71b2e4fd56001_cryptolocker.exe	92
PID 1620 wrote to memory of 1756	1620	2024-03-06_58696380062ff0521ae71b2e4fd56001_cryptolocker.exe	92
PID 1620 wrote to memory of 1756	1620	2024-03-06_58696380062ff0521ae71b2e4fd56001_cryptolocker.exe	92

C:\Users\Admin\AppData\Local\Temp\2024-03-06_58696380062ff0521ae71b2e4fd56001_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-06_58696380062ff0521ae71b2e4fd56001_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1620
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1756

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
52KB

MD5
c0d6f3498dc30953a47fe518b360315f

SHA1
f83538d89198977a75ecf3ab5b1621414925f64b

SHA256
3ff5d6d8d1396fe60e536db9ec488bf8dcb609d19266ccfc06d8509b279350aa

SHA512
5508bc4dc812940362fba9bfcd88bd59cd0a3d15ddd8c88c2756e892eac5bd3d9be827377275fcca6dc87e3a548c6ae07692e24c4f1f9372d4160091cecff1e9

Download Submit
memory/1620-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1620-1-0x00000000005F0000-0x00000000005F6000-memory.dmp

Filesize
24KB

Download
memory/1620-2-0x00000000005F0000-0x00000000005F6000-memory.dmp

Filesize
24KB

Download
memory/1620-3-0x00000000021B0000-0x00000000021B6000-memory.dmp

Filesize
24KB

Download
memory/1620-18-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1756-19-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/1756-22-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download