6d63a07691da0674ce605b0565ddf9e5d8e471cd040f8172225dda4452023eb4

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
30-04-2024 21:49

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General

Target

2024-04-30_85fc00e000c9c5d53bed342f58ae65e0_cryptolocker.exe
Size

40KB
MD5

85fc00e000c9c5d53bed342f58ae65e0
SHA1

5970fc8ebc522f95a84a5fed26003143095612cf
SHA256

6d63a07691da0674ce605b0565ddf9e5d8e471cd040f8172225dda4452023eb4
SHA512

23661d3c2d5be4a2a9e64fdaa2783c579bf42a0fc33728640bb189679fa3f87f04136aced8b21538f4f5ecb4582e0e5bc3a36d30193bb1562b0ba0c3d434269e
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBaac4HK/wSvuQTCU:X6QFElP6n+gJQMOtEvwDpjBsYK/f/

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000e000000023b99-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000e000000023b99-12.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-1-5-21-2860750803-256193626-1801997576-1000\Control Panel\International\Geo\Nation	2024-04-30_85fc00e000c9c5d53bed342f58ae65e0_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
668	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 2228 wrote to memory of 668	2228	2024-04-30_85fc00e000c9c5d53bed342f58ae65e0_cryptolocker.exe	85
PID 2228 wrote to memory of 668	2228	2024-04-30_85fc00e000c9c5d53bed342f58ae65e0_cryptolocker.exe	85
PID 2228 wrote to memory of 668	2228	2024-04-30_85fc00e000c9c5d53bed342f58ae65e0_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-04-30_85fc00e000c9c5d53bed342f58ae65e0_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-30_85fc00e000c9c5d53bed342f58ae65e0_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2228
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:668

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
40KB

MD5
5b111c4f336bbd895d309cea9f05e211

SHA1
bb9a18913488e9dda53b4f0fc88a0fdceb633ea0

SHA256
9eefc75355fb70e48658ee1f1f432fb87b4065331b1f0ac5e77e07091aae41ed

SHA512
9d9112ed730ea8564d250ef1d10e6f450902ddff8f11d1cfb74f44eec7de24ccf4f9cfb97e1f0dacb78bc01c3db201854b8c23df6b55c011e74ba804dc3896b3

Download Submit
memory/668-17-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/668-23-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2228-0-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download
memory/2228-8-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download
memory/2228-2-0x00000000005D0000-0x00000000005D6000-memory.dmp

Filesize
24KB

Download