1534888536cd19b957105b5f1f3f9136c9095df69428a7cfee3167241db34453

Analysis

max time kernel
143s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
29/01/2024, 16:37

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General

Target

2024-01-29_b67b027c65d78e289f5d3ccd40eb5ec4_cryptolocker.exe
Size

73KB
MD5

b67b027c65d78e289f5d3ccd40eb5ec4
SHA1

deb335c9eb294fb80e053c98c057f1a47bde5812
SHA256

1534888536cd19b957105b5f1f3f9136c9095df69428a7cfee3167241db34453
SHA512

6e75c15359026caeefe2a7a0c513c5f5dd2ff1118b216ab6e18b10817a71f44994af4fc04b9101ebce8b629254a800f4c733283b7b458478f54ae5a3d42bfcfc
SSDEEP

1536:X6QFElP6n+gJQMOtEvwDpjBZYTjipvF2bx1RR:X6a+SOtEvwDpjBZYvQd23

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023206-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023206-12.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-1-5-21-635608581-3370340891-292606865-1000\Control Panel\International\Geo\Nation	2024-01-29_b67b027c65d78e289f5d3ccd40eb5ec4_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2480	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 2888 wrote to memory of 2480	2888	2024-01-29_b67b027c65d78e289f5d3ccd40eb5ec4_cryptolocker.exe	84
PID 2888 wrote to memory of 2480	2888	2024-01-29_b67b027c65d78e289f5d3ccd40eb5ec4_cryptolocker.exe	84
PID 2888 wrote to memory of 2480	2888	2024-01-29_b67b027c65d78e289f5d3ccd40eb5ec4_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-01-29_b67b027c65d78e289f5d3ccd40eb5ec4_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-29_b67b027c65d78e289f5d3ccd40eb5ec4_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2888
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2480

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
74KB

MD5
7b3eef7192fbc81c63acc52bf294442e

SHA1
3e38159d80b72036b9e7a5b8ded59ccc207edbd9

SHA256
68fc0377d867171e9c3ce09b9d7ff6b12e0f70e87d736236c5dedc72af46af8a

SHA512
1d03a8241e1d86c6356a145487001b90eebbd95dbd8e2870b4a2001551088c92b6d869fb5efe2dfd0be024b9075f955a350a83d1c00f38d357684b624316c96c

Download Submit
memory/2480-17-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/2480-23-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2888-0-0x00000000006F0000-0x00000000006F6000-memory.dmp

Filesize
24KB

Download
memory/2888-1-0x00000000006F0000-0x00000000006F6000-memory.dmp

Filesize
24KB

Download
memory/2888-2-0x0000000000720000-0x0000000000726000-memory.dmp

Filesize
24KB

Download