70e6a3c24708a35e6d951200b3e8fb5ba64cea0cd16c8fb6ce974472e70563ac

Analysis

max time kernel
150s
max time network
158s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
29/04/2024, 14:53

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General

Target

2024-04-29_56fa6e2895a70720f80e64c5144571cc_cryptolocker.exe
Size

42KB
MD5

56fa6e2895a70720f80e64c5144571cc
SHA1

f7679efe02f8adc49f7edf4fe507b8b8e9afd3ba
SHA256

70e6a3c24708a35e6d951200b3e8fb5ba64cea0cd16c8fb6ce974472e70563ac
SHA512

11c26033594f0d100aa3a8e877395a046fd4e77f2e434b61a6e0a47f200cdfad8ba01d4c47f4ce9fe0c1b7fb49c582937dc1ecbbeb901b28428037f3627ceec7
SSDEEP

384:bm74uGLLQRcsdeQ72ngEr4K7YmE8jo0nrlwfjDUc:bm74zYcgT/Ekn0ryfjF

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/3616-0-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000d000000023ae7-13.dat	CryptoLocker_rule2
behavioral2/memory/3616-17-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4740-26-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2

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-1-5-21-877519540-908060166-1852957295-1000\Control Panel\International\Geo\Nation	2024-04-29_56fa6e2895a70720f80e64c5144571cc_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4740	hasfj.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 3616 wrote to memory of 4740	3616	2024-04-29_56fa6e2895a70720f80e64c5144571cc_cryptolocker.exe	83
PID 3616 wrote to memory of 4740	3616	2024-04-29_56fa6e2895a70720f80e64c5144571cc_cryptolocker.exe	83
PID 3616 wrote to memory of 4740	3616	2024-04-29_56fa6e2895a70720f80e64c5144571cc_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-04-29_56fa6e2895a70720f80e64c5144571cc_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-29_56fa6e2895a70720f80e64c5144571cc_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3616
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:4740

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\hasfj.exe

Filesize
43KB

MD5
03ad7c88bb6490f1b74106bb1d77a087

SHA1
4239fa80a6e3e69698abea13cb8aa9a0bda6c734

SHA256
4f388fb6aa2baba13150793c92dd65981cabe6616300844fd03c400352f06d81

SHA512
98be3b666673b896a2106966d2aeab52e213b1332dd026c939ab259e98e14651c191e38bc685cc55f5b61908842851649e4c6268e7fec63e0549ae4efedfbad3

Download Submit
memory/3616-0-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/3616-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/3616-2-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/3616-3-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download
memory/3616-17-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/4740-19-0x0000000002240000-0x0000000002246000-memory.dmp

Filesize
24KB

Download
memory/4740-20-0x0000000002400000-0x0000000002406000-memory.dmp

Filesize
24KB

Download
memory/4740-26-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download