635332b5776d3dee2639dd9147956837fbbfed24c719ba7b833e26811e5af4e3

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
03-06-2024 02:26

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General

Target

2024-06-03_3f958d41e379cfb3b0f4ec4c998fd6f3_cryptolocker.exe
Size

50KB
MD5

3f958d41e379cfb3b0f4ec4c998fd6f3
SHA1

08518143d4e3b6a826506cb7bf7224af00ba5fee
SHA256

635332b5776d3dee2639dd9147956837fbbfed24c719ba7b833e26811e5af4e3
SHA512

508bc58575714989760b5a1900c6808b9c5b341da8d22dcd40ccc91747fe7e545dd52b4b420950f3592d82dd71867d16d7fe987d2386379fc8c3d382bb84a5d1
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/BtOOtEvwDpjBVaD3E09vdXfn4:X6QFElP6n+gJBMOtEvwDpjBtEdXfn4

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000002328e-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000002328e-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-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	2024-06-03_3f958d41e379cfb3b0f4ec4c998fd6f3_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1276	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 2504 wrote to memory of 1276	2504	2024-06-03_3f958d41e379cfb3b0f4ec4c998fd6f3_cryptolocker.exe	83
PID 2504 wrote to memory of 1276	2504	2024-06-03_3f958d41e379cfb3b0f4ec4c998fd6f3_cryptolocker.exe	83
PID 2504 wrote to memory of 1276	2504	2024-06-03_3f958d41e379cfb3b0f4ec4c998fd6f3_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-06-03_3f958d41e379cfb3b0f4ec4c998fd6f3_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-03_3f958d41e379cfb3b0f4ec4c998fd6f3_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2504
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1276

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
50KB

MD5
73fa6b3db6ea6d3ff3dd225e423cd962

SHA1
de1b2dea8d9cbbaada0db2e694b8104b683835d0

SHA256
133d9f98b5984ef11186346150e344c6305400ea07cb2d9b82afc2b3861e1705

SHA512
e93b0d92d8fe5889608d972bfd5250db020281557649f90f96ed9d460c2c4d6a80989c3821161d3c1162cc93f39214bd5e15ff3603de7f63354cd0c437e15ae1

Download Submit
memory/1276-17-0x00000000006E0000-0x00000000006E6000-memory.dmp

Filesize
24KB

Download
memory/1276-23-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2504-0-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/2504-1-0x00000000020F0000-0x00000000020F6000-memory.dmp

Filesize
24KB

Download
memory/2504-8-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download