3fd59da00582a58042eff33b4a7161220f2a8d21fe1d581bec35ca12381bdc45

Analysis

max time kernel
148s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
11/05/2024, 15:23

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General

Target

2024-05-11_1451c69b6da562bc9731d9d4d0f2236b_cryptolocker.exe
Size

47KB
MD5

1451c69b6da562bc9731d9d4d0f2236b
SHA1

c1bdd5a16e08b7001be9a34957d3d279dfbe3d8a
SHA256

3fd59da00582a58042eff33b4a7161220f2a8d21fe1d581bec35ca12381bdc45
SHA512

43cb263c6d40d8be44d1840fcc9ce6c7737efd084e2d4017f9e479f5f25ba1e7e5d8a8f2a09846b0f517a6406e99f2540c84bb64696ffa1045f8b9572374b587
SSDEEP

768:P6LsoVEeegiZPvEhHSP+gp/QtOOtEvwDpjBBMLZdzuqpXsiE8Wq/Dpkcly:P6Q0ElP6G+gJQMOtEvwDpjB8WMlfly

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/3180-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0007000000023289-13.dat	CryptoLocker_rule2
behavioral2/memory/3180-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2752-26-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/3180-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0007000000023289-13.dat	CryptoLocker_set1
behavioral2/memory/3180-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/memory/2752-26-0x0000000000500000-0x000000000050B000-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-1-5-21-3906287020-2915474608-1755617787-1000\Control Panel\International\Geo\Nation	2024-05-11_1451c69b6da562bc9731d9d4d0f2236b_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2752	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 3180 wrote to memory of 2752	3180	2024-05-11_1451c69b6da562bc9731d9d4d0f2236b_cryptolocker.exe	83
PID 3180 wrote to memory of 2752	3180	2024-05-11_1451c69b6da562bc9731d9d4d0f2236b_cryptolocker.exe	83
PID 3180 wrote to memory of 2752	3180	2024-05-11_1451c69b6da562bc9731d9d4d0f2236b_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-05-11_1451c69b6da562bc9731d9d4d0f2236b_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-11_1451c69b6da562bc9731d9d4d0f2236b_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3180
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2752

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
47KB

MD5
a67214df47e9fb3af6142a1660e38308

SHA1
25e97c04bbb6b49a5297f94be6d27a9f31ea50d0

SHA256
1887d52d1e9d8324f00b67800eb3f83339867be3fe923d9dccff40b3546d4314

SHA512
6279a777d671cd3729edbbb7b2a950a99d34164955e15d14cee8d7b296de9a0d97d476e709c223dd3e6d9723c34470f202f892804398989d9220372ed09f5b5b

Download Submit
memory/2752-19-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download
memory/2752-25-0x0000000002050000-0x0000000002056000-memory.dmp

Filesize
24KB

Download
memory/2752-26-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/3180-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/3180-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/3180-2-0x0000000000750000-0x0000000000756000-memory.dmp

Filesize
24KB

Download
memory/3180-9-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/3180-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download