f4d3a6f6eb5118976870cf302a0c1cd9c6fb446faa66815a85b962d7c13effa9

Analysis

max time kernel
148s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
12/05/2024, 03:49

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General

Target

2024-05-12_45a4003e30ec7bb87055b82bd8dabd8f_cryptolocker.exe
Size

41KB
MD5

45a4003e30ec7bb87055b82bd8dabd8f
SHA1

6196948e40bbc192f1893aebac9640aa969316d2
SHA256

f4d3a6f6eb5118976870cf302a0c1cd9c6fb446faa66815a85b962d7c13effa9
SHA512

ab9e0c5895078c85541b9612e4a575aecfbf5a935b5a7f015fa36fea9f9deac57189f11b7595e37fe378263d56c4d9fab556b135eee9892988a712a8b7a6cdc3
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBaac4HK/wSvuQTCW:X6QFElP6n+gJQMOtEvwDpjBsYK/fp

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023289-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023289-12.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-1-5-21-3906287020-2915474608-1755617787-1000\Control Panel\International\Geo\Nation	2024-05-12_45a4003e30ec7bb87055b82bd8dabd8f_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4036	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 1320 wrote to memory of 4036	1320	2024-05-12_45a4003e30ec7bb87055b82bd8dabd8f_cryptolocker.exe	83
PID 1320 wrote to memory of 4036	1320	2024-05-12_45a4003e30ec7bb87055b82bd8dabd8f_cryptolocker.exe	83
PID 1320 wrote to memory of 4036	1320	2024-05-12_45a4003e30ec7bb87055b82bd8dabd8f_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-05-12_45a4003e30ec7bb87055b82bd8dabd8f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-12_45a4003e30ec7bb87055b82bd8dabd8f_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1320
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4036

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
41KB

MD5
7a3d83f0c162e77c52d5e706fef06e1f

SHA1
a60c239dc5f51ddfad12a392aa61b7bb630a3463

SHA256
a3912a2450e99da80c0b21e758cf9de8710fc926905136deec3425454ed4ad5d

SHA512
479f7fe787d01c727a745750cf4d2043f8c80fe68bb231990669351f842da69642b5faf600c1f50934c154f3df453bc60248fc4325ce4037f4112dfbaf467451

Download Submit
memory/1320-0-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/1320-1-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/1320-8-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4036-17-0x00000000006F0000-0x00000000006F6000-memory.dmp

Filesize
24KB

Download
memory/4036-23-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download