f6707886e2375e00795d91d0061282d38599fce01f6df24dd2cac083ba000511

Analysis

max time kernel
91s
max time network
92s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
02/05/2024, 10:37

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General

Target

2024-05-02_602ab20269159d17e7ae9e0bc3ddf79a_cryptolocker.exe
Size

52KB
MD5

602ab20269159d17e7ae9e0bc3ddf79a
SHA1

dbca8088b2914409a3ac48c464716381203c12fc
SHA256

f6707886e2375e00795d91d0061282d38599fce01f6df24dd2cac083ba000511
SHA512

4d7984875330f434278272d8e5db81d5f07f1bf5c3ab69b8acfe2f3fa82addc9e29366fd6782f86c23e7f7aadc67afc19ecbf6efd47992b61b00e1022647a737
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszsbKY1xzpAI44:aq7tdgI2MyzNORQtOflIwoHNV2XBFV78

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000800000002342a-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000800000002342a-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-1-5-21-4018855536-2201274732-320770143-1000\Control Panel\International\Geo\Nation	2024-05-02_602ab20269159d17e7ae9e0bc3ddf79a_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-4018855536-2201274732-320770143-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

pid	Process
1972	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 1528 wrote to memory of 1972	1528	2024-05-02_602ab20269159d17e7ae9e0bc3ddf79a_cryptolocker.exe	84
PID 1528 wrote to memory of 1972	1528	2024-05-02_602ab20269159d17e7ae9e0bc3ddf79a_cryptolocker.exe	84
PID 1528 wrote to memory of 1972	1528	2024-05-02_602ab20269159d17e7ae9e0bc3ddf79a_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-05-02_602ab20269159d17e7ae9e0bc3ddf79a_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-02_602ab20269159d17e7ae9e0bc3ddf79a_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1528
- 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:1972

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
52KB

MD5
56d2562c21ab15606a811bb67a042a66

SHA1
bc63eda97f8ed75a875f9e8c13f1cad039df240d

SHA256
63af45d40d6cdda3c90de25a1cb570d23dba9aa0414edfc27e89235685c4382c

SHA512
b51c874a42a143e17072eea8f0f404c73ff74db6d081136574545429d594e2879dc55186e95c1f17781fde356218ea8d5f9b00f728e37b6bee0a44e017967c3b

Download Submit
memory/1528-0-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/1528-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/1528-8-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/1972-25-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download