4edbd073bc89ba1ffde8b084e166d779b522e8fe3d78a5801bf5de1fa5df268f

Analysis

max time kernel
157s
max time network
157s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
27/03/2024, 19:29

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General

Target

2024-03-27_489ec5d6659d6a33c0243e298ac561ff_cryptolocker.exe
Size

35KB
MD5

489ec5d6659d6a33c0243e298ac561ff
SHA1

5c2ebbea995be24a7ccd896325b1e4849879434b
SHA256

4edbd073bc89ba1ffde8b084e166d779b522e8fe3d78a5801bf5de1fa5df268f
SHA512

e4711c0351fad0e8dd1c636f0ac1ee42c65cc2b7ad395d00fabaf7d9080da37f52d7472b7813aa3fe99eed7f5e668a955b9e12706401e9cc7ca8937f3c475614
SSDEEP

768:wHGGaSawqnwjRQ6ESlmFOsPoOdQtOOtEvwDpjm6WaJIOc+UPPbNI:YGzl5wjRQBBOsP1QMOtEvwDpjgar2I

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 3 IoCs

resource	yara_rule
behavioral2/memory/2616-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0008000000023203-13.dat	CryptoLocker_rule2
behavioral2/memory/2616-25-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral2/memory/2616-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0008000000023203-13.dat	CryptoLocker_set1
behavioral2/memory/2616-25-0x0000000000500000-0x000000000050B000-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-1-5-21-3045580317-3728985860-206385570-1000\Control Panel\International\Geo\Nation	2024-03-27_489ec5d6659d6a33c0243e298ac561ff_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4156	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 2616 wrote to memory of 4156	2616	2024-03-27_489ec5d6659d6a33c0243e298ac561ff_cryptolocker.exe	87
PID 2616 wrote to memory of 4156	2616	2024-03-27_489ec5d6659d6a33c0243e298ac561ff_cryptolocker.exe	87
PID 2616 wrote to memory of 4156	2616	2024-03-27_489ec5d6659d6a33c0243e298ac561ff_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-03-27_489ec5d6659d6a33c0243e298ac561ff_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-27_489ec5d6659d6a33c0243e298ac561ff_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2616
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4156

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
35KB

MD5
558d2cfb6e8417eeee40336db34f3389

SHA1
4a56bd9a46b67fc5c0a1866378283c63a4c8d813

SHA256
d1d483ba008288c2b751fde534aad2348fe3a431a2b2d3dc7618b98423c2d569

SHA512
554acc3ef2d7513f906d3abe6c86193f723f9e3fc1db85a956ab50ed51681ef28831e7cf7f771a5e48df42b804bbee30988d688cf4a1e86a97631de29f0612f2

Download Submit
memory/2616-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2616-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/2616-2-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/2616-3-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/2616-25-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/4156-18-0x0000000000560000-0x0000000000566000-memory.dmp

Filesize
24KB

Download
memory/4156-19-0x0000000000590000-0x0000000000596000-memory.dmp

Filesize
24KB

Download