dddbc111e4f923dce584da986c255177c50f273c0ebc58d8e7b2f642d4c5c9aa

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
02/05/2024, 05:26

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General

Target

2024-05-02_143d70ac9bbeac1d5b48a93af4e93db3_cryptolocker.exe
Size

53KB
MD5

143d70ac9bbeac1d5b48a93af4e93db3
SHA1

56ea44841e536fb5bd76625e75559de4c542e0ab
SHA256

dddbc111e4f923dce584da986c255177c50f273c0ebc58d8e7b2f642d4c5c9aa
SHA512

19b9be17127be437b98fca5d0256910b9703b744f86578f6f14084a108ad044fed85acd50de46f849abf5a2d3d0896165f4a30f22ad71fe87eb595b8b2725aae
SSDEEP

1536:Dk/xY0sllyGQMOtEvwDpjwycDtKkQZQ6ud:DW60sllyWOtEvwDpjwFx

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/4892-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000d000000023b72-13.dat	CryptoLocker_rule2
behavioral2/memory/4892-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1820-18-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/4892-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000d000000023b72-13.dat	CryptoLocker_set1
behavioral2/memory/4892-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/memory/1820-18-0x0000000000500000-0x000000000050B000-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-1-5-21-3411335054-1982420046-2118495756-1000\Control Panel\International\Geo\Nation	2024-05-02_143d70ac9bbeac1d5b48a93af4e93db3_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1820	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 4892 wrote to memory of 1820	4892	2024-05-02_143d70ac9bbeac1d5b48a93af4e93db3_cryptolocker.exe	83
PID 4892 wrote to memory of 1820	4892	2024-05-02_143d70ac9bbeac1d5b48a93af4e93db3_cryptolocker.exe	83
PID 4892 wrote to memory of 1820	4892	2024-05-02_143d70ac9bbeac1d5b48a93af4e93db3_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-05-02_143d70ac9bbeac1d5b48a93af4e93db3_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-02_143d70ac9bbeac1d5b48a93af4e93db3_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4892
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1820

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
54KB

MD5
787bd9f6b7197961e42650b2fb789197

SHA1
01f0067678eebf647a628d67446e794286a45ba6

SHA256
0ed4e48d19ddc084f335080365dcbf902700f9c6761aafd0fa98c2374f1d1cbc

SHA512
18bf036ce1ef18fb5a07d7a6a11d111619dec54aa2dc80e16ed92ef0d36058a6884e8e25294a7040ce4563efa3421d3da65245eb584dcb07392df95082628c1d

Download Submit
memory/1820-18-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/1820-20-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/4892-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/4892-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4892-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/4892-8-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4892-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download