667c2e5182c05bfe7e8173b88c696003b89b808a3469f2c5b89ce6e02bd52461

Analysis

max time kernel
0s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
09/06/2024, 07:27

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General

Target

2024-06-09_627e1fbec0f24b814f63eee5ee1f71ad_cryptolocker.exe
Size

49KB
MD5

627e1fbec0f24b814f63eee5ee1f71ad
SHA1

fb112f3589417d4c2d8932f37ff933dbe91c047c
SHA256

667c2e5182c05bfe7e8173b88c696003b89b808a3469f2c5b89ce6e02bd52461
SHA512

01d6eb2220469b070ecb9a0a85f69c38af254d6aac7c5ff85e23766e2a5c526873ae19493ed575fe0f82908abb8f3ccc98e1369c432bf1973ec00309e22b1ddb
SSDEEP

768:P6LsoVEeegiZPvEhHSP+gp/QtOOtEvwDpjBBMLZdzuqpXsiE8Wq/DpkcAYZG:P6Q0ElP6G+gJQMOtEvwDpjB8WMlf/ZG

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/5056-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000800000002327d-13.dat	CryptoLocker_rule2
behavioral2/memory/5056-18-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1312-16-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1312-27-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral2/memory/5056-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000800000002327d-13.dat	CryptoLocker_set1
behavioral2/memory/5056-18-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/memory/1312-16-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/memory/1312-27-0x0000000000500000-0x000000000050B000-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-1-5-21-711569230-3659488422-571408806-1000\Control Panel\International\Geo\Nation	2024-06-09_627e1fbec0f24b814f63eee5ee1f71ad_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1312	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 5056 wrote to memory of 1312	5056	2024-06-09_627e1fbec0f24b814f63eee5ee1f71ad_cryptolocker.exe	83
PID 5056 wrote to memory of 1312	5056	2024-06-09_627e1fbec0f24b814f63eee5ee1f71ad_cryptolocker.exe	83
PID 5056 wrote to memory of 1312	5056	2024-06-09_627e1fbec0f24b814f63eee5ee1f71ad_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-06-09_627e1fbec0f24b814f63eee5ee1f71ad_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-09_627e1fbec0f24b814f63eee5ee1f71ad_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:5056
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1312

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
49KB

MD5
9c3df63ca77468416988ce33cd2c0959

SHA1
8d923267c08a9d3d25da1ce9757ef6072fe02fd6

SHA256
fd208dc01735b01dfed61710a767c3b77d92717a1cf68f24a9c2f7e5c158bc6c

SHA512
3f256402f12f3e8d0fbd5802595508fa62ef6b9cce7d3cecfe2673b5e9763dc8c7bfa2a7f92141ae08e70f4ea0a87425b2169a30a1348535ced3904afa026dd7

Download Submit
memory/1312-16-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/1312-20-0x0000000002050000-0x0000000002056000-memory.dmp

Filesize
24KB

Download
memory/1312-26-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/1312-27-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/5056-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/5056-1-0x0000000000620000-0x0000000000626000-memory.dmp

Filesize
24KB

Download
memory/5056-2-0x0000000000750000-0x0000000000756000-memory.dmp

Filesize
24KB

Download
memory/5056-9-0x0000000000620000-0x0000000000626000-memory.dmp

Filesize
24KB

Download
memory/5056-18-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download