b81d8db5114392bec3c704ea74a7ab7000b5e26199c7f9651a6768980bc17e5b

Analysis

max time kernel
148s
max time network
150s
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, 04:34

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General

Target

2024-02-29_202bfa72d33be21e18e2ef6d58937417_cryptolocker.exe
Size

122KB
MD5

202bfa72d33be21e18e2ef6d58937417
SHA1

08d0ff975a1f027776166980ab6db5666a4fbe3d
SHA256

b81d8db5114392bec3c704ea74a7ab7000b5e26199c7f9651a6768980bc17e5b
SHA512

4c3870a0e302dea683f0a96e6719d34248f7072248b5f740e19f4ee6666142b8a4105077cbc13c0ee0351b6034a84a3e0ac9998efda7d18ef46451d4148caea7
SSDEEP

1536:u6QFElP6n+gWMOtEvwDpjJGYQbN/PKwMgJ:u6a++OtEvwDpj6z9

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000001e59e-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000001e59e-12.dat	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-1-5-21-399997616-3400990511-967324271-1000\Control Panel\International\Geo\Nation	2024-02-29_202bfa72d33be21e18e2ef6d58937417_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3036	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 4056 wrote to memory of 3036	4056	2024-02-29_202bfa72d33be21e18e2ef6d58937417_cryptolocker.exe	89
PID 4056 wrote to memory of 3036	4056	2024-02-29_202bfa72d33be21e18e2ef6d58937417_cryptolocker.exe	89
PID 4056 wrote to memory of 3036	4056	2024-02-29_202bfa72d33be21e18e2ef6d58937417_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-02-29_202bfa72d33be21e18e2ef6d58937417_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-29_202bfa72d33be21e18e2ef6d58937417_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4056
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3036

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
122KB

MD5
05dc07f7a433933a0760ae57ece24205

SHA1
49fc1f8469725d67399bc04c285f6a38f86dcf82

SHA256
8f15633990f09c13deb14d96bebc2b17f4c117a19a22c0bb35a1f5c4bf6e6e20

SHA512
5d109c5319d12a29b0f0f65be562bafa39a005da424a662cd08f5a9238989b942359f720c1dc6b9e72f44d8b785f2923d36362b9049fe74e8ebf0d3b9bf97158

Download Submit
memory/3036-17-0x0000000000650000-0x0000000000656000-memory.dmp

Filesize
24KB

Download
memory/3036-21-0x0000000000620000-0x0000000000626000-memory.dmp

Filesize
24KB

Download
memory/4056-0-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download
memory/4056-1-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download
memory/4056-2-0x00000000005D0000-0x00000000005D6000-memory.dmp

Filesize
24KB

Download