d09150c8e0bb5c305c5b9ba58446eb16b0d15b77d7e70f9b540aa4063d8b8691

Analysis

max time kernel
149s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
29/05/2024, 15:42

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General

Target

2024-05-29_acfdf5809a6dadc684947ff3af9bb81a_cryptolocker.exe
Size

68KB
MD5

acfdf5809a6dadc684947ff3af9bb81a
SHA1

d977194d6f342ab42c8290c803be60315b90375b
SHA256

d09150c8e0bb5c305c5b9ba58446eb16b0d15b77d7e70f9b540aa4063d8b8691
SHA512

e474f432292edbf7e962747ed24835b76a650ae58c223707386da4aa738d43e0f1d27b3bb4295243f2b47c9ae50657c83c774ca7770590c53e0625bb28124c41
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszudnYTjipvF293vaRLEk:aq7tdgI2MyzNORQtOflIwoHNV2XBFV78

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000022f51-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000022f51-12.dat	CryptoLocker_set1

Checks computer location settings 2 TTPs 2 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-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation	2024-05-29_acfdf5809a6dadc684947ff3af9bb81a_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

pid	Process
3576	hurok.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 4548 wrote to memory of 3576	4548	2024-05-29_acfdf5809a6dadc684947ff3af9bb81a_cryptolocker.exe	82
PID 4548 wrote to memory of 3576	4548	2024-05-29_acfdf5809a6dadc684947ff3af9bb81a_cryptolocker.exe	82
PID 4548 wrote to memory of 3576	4548	2024-05-29_acfdf5809a6dadc684947ff3af9bb81a_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-05-29_acfdf5809a6dadc684947ff3af9bb81a_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-29_acfdf5809a6dadc684947ff3af9bb81a_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4548
- C:\Users\Admin\AppData\Local\Temp\hurok.exe
  "C:\Users\Admin\AppData\Local\Temp\hurok.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  PID:3576

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\hurok.exe

Filesize
68KB

MD5
5a9c8cc6628de759b72f1123f462c2ac

SHA1
f634037ec726e680a39e25e8c4fd38f29ea3b941

SHA256
2e09fa541af4ac44b7f357ea9fe70605b00e32e314a8ceedb13f1384c2d5528e

SHA512
6baed324d487091b92f267cc2e09cf2c22cf01e067d2e3126eca71f43c33d9d988d1f326c03b1e83c183b1210b5f408389714885565941bbabf4cbe47eb0f7a1

Download Submit
memory/3576-25-0x00000000020D0000-0x00000000020D6000-memory.dmp

Filesize
24KB

Download
memory/4548-0-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/4548-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4548-8-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download