2f2ddce642d0c5f30d7d7419d186a77949ba62d8a1e3764521f9e7055868bd4e

Analysis

max time kernel
140s
max time network
160s
platform
windows10-2004_x64
resource
win10v2004-20240221-en
resource tags

arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
submitted
23-02-2024 15:49

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General

Target

2024-02-23_e511c9473509bb76773d71cb45a4cc36_cryptolocker.exe
Size

62KB
MD5

e511c9473509bb76773d71cb45a4cc36
SHA1

7ecf2874a2259bd68c97d58bf97243bad6540dcd
SHA256

2f2ddce642d0c5f30d7d7419d186a77949ba62d8a1e3764521f9e7055868bd4e
SHA512

5ea81762f58ca5be4dac19b300b7ad3a7d0916831c7939686c469af94ab50d5f00ad460854ab7db411c3d830683a5a865aa3bfa44cbfd397f3281e47ed215d87
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszudnYTjipvF293O:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7w

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0006000000023123-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0006000000023123-12.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-1-5-21-3844919115-497234255-166257750-1000\Control Panel\International\Geo\Nation	2024-02-23_e511c9473509bb76773d71cb45a4cc36_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3844919115-497234255-166257750-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

pid	Process
3488	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 4972 wrote to memory of 3488	4972	2024-02-23_e511c9473509bb76773d71cb45a4cc36_cryptolocker.exe	86
PID 4972 wrote to memory of 3488	4972	2024-02-23_e511c9473509bb76773d71cb45a4cc36_cryptolocker.exe	86
PID 4972 wrote to memory of 3488	4972	2024-02-23_e511c9473509bb76773d71cb45a4cc36_cryptolocker.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-02-23_e511c9473509bb76773d71cb45a4cc36_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-23_e511c9473509bb76773d71cb45a4cc36_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4972
- 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:3488

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
62KB

MD5
f6fb95b656725d2f670a050da74e9a3b

SHA1
5bb5c47356dcb94fa77acb8ed484506328082a7e

SHA256
8fa234818378fb7c7449f487c9b23088126c8454db313d5c2f708918adf51e17

SHA512
03d8ddc51b1616351f4bfa57d59a9d5008b5a3aa10eb4dd6845f11dcc50f0475999618c565c4ed8d3530d804bf6136d5ceaa9029faf586322147f8d1eb14052a

Download Submit
memory/3488-23-0x0000000000590000-0x0000000000596000-memory.dmp

Filesize
24KB

Download
memory/4972-0-0x0000000002270000-0x0000000002276000-memory.dmp

Filesize
24KB

Download
memory/4972-1-0x0000000002270000-0x0000000002276000-memory.dmp

Filesize
24KB

Download
memory/4972-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download