a4e45a2b07ff21377a3f5b857cd475da1f63fc65a9bb30e90527bf407baab24e

Analysis

max time kernel
148s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
09/05/2024, 04:33

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General

Target

2024-05-09_51aa7ea715070ca9f1c4409529a89a13_cryptolocker.exe
Size

46KB
MD5

51aa7ea715070ca9f1c4409529a89a13
SHA1

dc9455783d34acf14b85efb152ec1441dfd389b8
SHA256

a4e45a2b07ff21377a3f5b857cd475da1f63fc65a9bb30e90527bf407baab24e
SHA512

5c6f8a267928d3e1d5214c9b6cfba32e1149d9c4665b987ef85b97e77869be09e3b024bfbdd613def09c4de8989f3c4cb4dbdccef60627dbbefb26093e0a0727
SSDEEP

768:P6LsoEEeegiZPvEhHS5+Mh/QtOOtEvwDpjBpaD3TUogs/VXpAPaW:P6QFElP6k+MRQMOtEvwDpjBQpVXBW

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/3528-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000700000002328e-13.dat	CryptoLocker_rule2
behavioral2/memory/2328-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3528-19-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2328-27-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral2/memory/3528-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000700000002328e-13.dat	CryptoLocker_set1
behavioral2/memory/2328-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/memory/3528-19-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/memory/2328-27-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1

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-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	2024-05-09_51aa7ea715070ca9f1c4409529a89a13_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2328	asih.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 3528 wrote to memory of 2328	3528	2024-05-09_51aa7ea715070ca9f1c4409529a89a13_cryptolocker.exe	81
PID 3528 wrote to memory of 2328	3528	2024-05-09_51aa7ea715070ca9f1c4409529a89a13_cryptolocker.exe	81
PID 3528 wrote to memory of 2328	3528	2024-05-09_51aa7ea715070ca9f1c4409529a89a13_cryptolocker.exe	81

C:\Users\Admin\AppData\Local\Temp\2024-05-09_51aa7ea715070ca9f1c4409529a89a13_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-09_51aa7ea715070ca9f1c4409529a89a13_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3528
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2328

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\asih.exe

Filesize
46KB

MD5
ced7e193ed56d15c3d0b2ac5231ccd41

SHA1
4c9b6c09799d2f77230cacccb87d3128bd87e9e0

SHA256
0e7ef4ca6cfc644a9c0af36c9679e4eed9bb554e7f0ab63fa874423f67bcc58d

SHA512
994b0eec452a46493ff64bddb38b1eb92dea787b34c3ab6141d1e969d8391d6042a0201005e5dca985b78a44fe9f3a402ab190faf960dd13f5e54c8507e23db4

Download Submit
memory/2328-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2328-26-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/2328-20-0x00000000006D0000-0x00000000006D6000-memory.dmp

Filesize
24KB

Download
memory/2328-27-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/3528-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/3528-1-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/3528-3-0x0000000000680000-0x0000000000686000-memory.dmp

Filesize
24KB

Download
memory/3528-9-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/3528-19-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download