0f0a748f4db21e1c7f6fa9eeafe72501e6ee304cf3c5802e11fecec7166c6b37

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
17-04-2024 04:15

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General

Target

2024-04-17_d9d623f0e34db6561de417c277793542_cryptolocker.exe
Size

42KB
MD5

d9d623f0e34db6561de417c277793542
SHA1

25299f307aed1a318ee838028b5336d176eb399c
SHA256

0f0a748f4db21e1c7f6fa9eeafe72501e6ee304cf3c5802e11fecec7166c6b37
SHA512

8cd5b6d4f5d59614d8ee8a0ce034cc18ea0d789587428cf2d0df950bb59a7a7f467c502d965af2b8cb2a592ffc25f62044ee0939f0bfb2f9d470db1253d5455a
SSDEEP

384:bm74uGLLQRcsdeQ72ngEr4K7YmE8jo0nrlwfjDU3:bm74zYcgT/Ekn0ryfjC

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/3452-0-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x00080000000233fe-13.dat	CryptoLocker_rule2
behavioral2/memory/3452-17-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1736-26-0x0000000008000000-0x000000000800D000-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-1-5-21-2177723727-746291240-1644359950-1000\Control Panel\International\Geo\Nation	2024-04-17_d9d623f0e34db6561de417c277793542_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1736	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 3452 wrote to memory of 1736	3452	2024-04-17_d9d623f0e34db6561de417c277793542_cryptolocker.exe	87
PID 3452 wrote to memory of 1736	3452	2024-04-17_d9d623f0e34db6561de417c277793542_cryptolocker.exe	87
PID 3452 wrote to memory of 1736	3452	2024-04-17_d9d623f0e34db6561de417c277793542_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-04-17_d9d623f0e34db6561de417c277793542_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-17_d9d623f0e34db6561de417c277793542_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3452
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:1736

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
42KB

MD5
220a0bd6bbac1d9a4478cff0562a7902

SHA1
1896cf25675d3aa4197fa1db7a48cc1064839645

SHA256
29cc6cd689176f9e1d551b7e4f6134952c72c9c3e92028aecee6a81179d7d45c

SHA512
84df2001765d10e9f99eb59be7a01b4049c3d4c5bfb8ea7205aae5faecc0e1e0eb2c6671c0e44e8acfba365d98db307d3495d6588353dab246a2581d40e1746c

Download Submit
memory/1736-19-0x0000000003010000-0x0000000003016000-memory.dmp

Filesize
24KB

Download
memory/1736-21-0x0000000002D60000-0x0000000002D66000-memory.dmp

Filesize
24KB

Download
memory/1736-26-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/3452-0-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/3452-1-0x0000000002180000-0x0000000002186000-memory.dmp

Filesize
24KB

Download
memory/3452-2-0x0000000002180000-0x0000000002186000-memory.dmp

Filesize
24KB

Download
memory/3452-3-0x0000000002380000-0x0000000002386000-memory.dmp

Filesize
24KB

Download
memory/3452-17-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download