5e1136d96490ad50f0bf89fdd2a9b28809971a7b359b6aa61b34113d0724e4e8

Analysis

max time kernel
137s
max time network
128s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
26/05/2024, 14:25

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General

Target

2024-05-26_3a7f7fe7b22634722751617b49d5767f_cryptolocker.exe
Size

45KB
MD5

3a7f7fe7b22634722751617b49d5767f
SHA1

200741f093dc0691ca0e8af81f61300ae5355c09
SHA256

5e1136d96490ad50f0bf89fdd2a9b28809971a7b359b6aa61b34113d0724e4e8
SHA512

7dbf1db1d81ad8a68a455dae28d6c0df9078260d3f38702f112c20c3b5e16e6bfafc12e1d3c411bd6432e01ee44a4041a140327d339c5e9938a5f2062113ce9a
SSDEEP

768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGpebVIYLHA3KxG:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XL

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0006000000022f42-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0006000000022f42-12.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-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	2024-05-26_3a7f7fe7b22634722751617b49d5767f_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

pid	Process
548	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 448 wrote to memory of 548	448	2024-05-26_3a7f7fe7b22634722751617b49d5767f_cryptolocker.exe	82
PID 448 wrote to memory of 548	448	2024-05-26_3a7f7fe7b22634722751617b49d5767f_cryptolocker.exe	82
PID 448 wrote to memory of 548	448	2024-05-26_3a7f7fe7b22634722751617b49d5767f_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-05-26_3a7f7fe7b22634722751617b49d5767f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-26_3a7f7fe7b22634722751617b49d5767f_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:448
- 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:548

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
46KB

MD5
02c24830f1e52e33b7d373a6192a83e8

SHA1
d7d9b335638a6e015935f2bc428172efa681ac85

SHA256
50f212b160dae1992d50d5e9e51cbe96d2cd8eb82a7e2bdf3fbe39140e1d0ae7

SHA512
1704478ddf5eb5d190194d53a40bcccbd28235b2f681131ea3815d4dfe6bd5116bcf8df4d3e758084cfa83e7a5dd8be27818e3c3db71767cc84a87a1405de422

Download Submit
memory/448-0-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/448-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/448-8-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/548-25-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download