d06bf745229ba795476d5d3330efbab652677818fa12c79ad541176645353b0f

Analysis

max time kernel
0s
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
23/04/2024, 23:33

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General

Target

2024-04-23_c36d8a4d25cf403dd2bd352720953201_cryptolocker.exe
Size

36KB
MD5

c36d8a4d25cf403dd2bd352720953201
SHA1

ef7de340e4543e8ffb2143cd73d2f58a808c58bd
SHA256

d06bf745229ba795476d5d3330efbab652677818fa12c79ad541176645353b0f
SHA512

8b3dcf86290372218d71e92b4aedba5f34cbdeb7d29cf588cd77e009d5fd685b3f1fb28d7e52261adb6f0fb4e1ea2396954745bb2f56686fa9d1d13b1dcfae48
SSDEEP

768:wHGGaSawqnwjRQ6ESlmFOsPoOdQtOOtEvwDpjm6WaJIOc+UPPEkY8:YGzl5wjRQBBOsP1QMOtEvwDpjgarrkL

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/3908-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000300000001e9b1-13.dat	CryptoLocker_rule2
behavioral2/memory/4000-18-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3908-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/3908-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000300000001e9b1-13.dat	CryptoLocker_set1
behavioral2/memory/4000-18-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/memory/3908-17-0x0000000000500000-0x000000000050B000-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-1-5-21-4084619521-2220719027-1909462854-1000\Control Panel\International\Geo\Nation	2024-04-23_c36d8a4d25cf403dd2bd352720953201_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4000	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 3908 wrote to memory of 4000	3908	2024-04-23_c36d8a4d25cf403dd2bd352720953201_cryptolocker.exe	92
PID 3908 wrote to memory of 4000	3908	2024-04-23_c36d8a4d25cf403dd2bd352720953201_cryptolocker.exe	92
PID 3908 wrote to memory of 4000	3908	2024-04-23_c36d8a4d25cf403dd2bd352720953201_cryptolocker.exe	92

C:\Users\Admin\AppData\Local\Temp\2024-04-23_c36d8a4d25cf403dd2bd352720953201_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-23_c36d8a4d25cf403dd2bd352720953201_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3908
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4000

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
36KB

MD5
1ffc104be943f2d54a6c018d92faa833

SHA1
906c255cde470d3d61c675571f89abf8a72edb7d

SHA256
bfa49db22685849da11e624d728c2e3c1afdf24bd884beaae1abbd618eeb366c

SHA512
980e009d9f1d530f74e813d87ab1358b4051bdb9f1ee8b925928159f3c8f5e771d0679b9b4307b16cfee1410101afd9fc207429c60a9e559c4d24cd3f7e7c47c

Download Submit
memory/3908-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/3908-2-0x00000000007D0000-0x00000000007D6000-memory.dmp

Filesize
24KB

Download
memory/3908-5-0x00000000007B0000-0x00000000007B6000-memory.dmp

Filesize
24KB

Download
memory/3908-1-0x00000000007B0000-0x00000000007B6000-memory.dmp

Filesize
24KB

Download
memory/3908-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/4000-20-0x0000000000760000-0x0000000000766000-memory.dmp

Filesize
24KB

Download
memory/4000-21-0x0000000000730000-0x0000000000736000-memory.dmp

Filesize
24KB

Download
memory/4000-18-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download