0d6b9ab21da8e0c76f08fc163d4db7feeb30b35664f96ea0cd33735ade6c9d2e

Analysis

max time kernel
150s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
10/04/2024, 13:37

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General

Target

2024-04-10_92c203ccb3a12d1b61e3f38e0205719a_cryptolocker.exe
Size

41KB
MD5

92c203ccb3a12d1b61e3f38e0205719a
SHA1

b7f740ab805361103d634dc14be7bba8bdfcf148
SHA256

0d6b9ab21da8e0c76f08fc163d4db7feeb30b35664f96ea0cd33735ade6c9d2e
SHA512

bf080618081794d17482daea6eb400696ff3e2f855fea0f720c2e1b69f78fe3dc842ef06e4f882fd92c1c13695a76c4b2a6c8625127541be20434360e94cad2c
SSDEEP

384:bm74uGLLQRcsdeQ72ngEr4K7YmE8jo0nrlwfjDUF:bm74zYcgT/Ekn0ryfjM

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/4304-0-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0007000000023243-13.dat	CryptoLocker_rule2
behavioral2/memory/4304-17-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1232-26-0x0000000008000000-0x000000000800D000-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-1-5-21-513485977-2495024337-1260977654-1000\Control Panel\International\Geo\Nation	2024-04-10_92c203ccb3a12d1b61e3f38e0205719a_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1232	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 4304 wrote to memory of 1232	4304	2024-04-10_92c203ccb3a12d1b61e3f38e0205719a_cryptolocker.exe	85
PID 4304 wrote to memory of 1232	4304	2024-04-10_92c203ccb3a12d1b61e3f38e0205719a_cryptolocker.exe	85
PID 4304 wrote to memory of 1232	4304	2024-04-10_92c203ccb3a12d1b61e3f38e0205719a_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-04-10_92c203ccb3a12d1b61e3f38e0205719a_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-10_92c203ccb3a12d1b61e3f38e0205719a_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4304
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:1232

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
41KB

MD5
ff318979da795b86aebbe565ffbbf460

SHA1
28df9a0c54224cd08151ddd731283ce18f8a363b

SHA256
877f66b094090b3eb3a3dc289892ff4bef22b6d7bce8bb6f46f0dd5523f3bbbc

SHA512
59973797a22d15838d6c4213c498b5ad6d2ab2f5289f14ac7554980eaac5e36b7f144c5cb1e731c2a6c7f862a5e6001c3081791a970bd1ad8af3bd702c034b12

Download Submit
memory/1232-19-0x0000000002ED0000-0x0000000002ED6000-memory.dmp

Filesize
24KB

Download
memory/1232-25-0x0000000002D60000-0x0000000002D66000-memory.dmp

Filesize
24KB

Download
memory/1232-26-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/4304-0-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/4304-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/4304-2-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/4304-3-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download
memory/4304-17-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download