802a0af42b5e6a607b7a25f9a782069e5e3d4a77fc7b62fd484876fae9300518

Analysis

max time kernel
159s
max time network
182s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
18-01-2024 22:58

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General

Target

2024-01-18_7eea718632648fed7a3d14a00c2aea91_cryptolocker.exe
Size

48KB
MD5

7eea718632648fed7a3d14a00c2aea91
SHA1

ffbc77c4ad764eb54bd60e33d339bb6d3b6be817
SHA256

802a0af42b5e6a607b7a25f9a782069e5e3d4a77fc7b62fd484876fae9300518
SHA512

2d6ceb269bc20c47ea9598ce9a13171bc431658be76a2654367c2650c92d3713775027d2d32add4c2cfa4e9d0aa0966712bf8dd04215b3297778f078534a6d2b
SSDEEP

768:79inqyNR/QtOOtEvwDpjBK/rJ+Nw8qnUtAA:79mqyNhQMOtEvwDpjBxe8xt/

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 3 IoCs

resource	yara_rule
behavioral2/memory/900-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0003000000021f7a-13.dat	CryptoLocker_rule2
behavioral2/memory/900-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral2/memory/900-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0003000000021f7a-13.dat	CryptoLocker_set1
behavioral2/memory/900-17-0x0000000000500000-0x000000000050F000-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-1-5-21-3336304223-2978740688-3645194410-1000\Control Panel\International\Geo\Nation	2024-01-18_7eea718632648fed7a3d14a00c2aea91_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
692	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 900 wrote to memory of 692	900	2024-01-18_7eea718632648fed7a3d14a00c2aea91_cryptolocker.exe	88
PID 900 wrote to memory of 692	900	2024-01-18_7eea718632648fed7a3d14a00c2aea91_cryptolocker.exe	88
PID 900 wrote to memory of 692	900	2024-01-18_7eea718632648fed7a3d14a00c2aea91_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-01-18_7eea718632648fed7a3d14a00c2aea91_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-18_7eea718632648fed7a3d14a00c2aea91_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:900
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:692

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
48KB

MD5
30fc7ffc04ff7ba1c19f5b01743eee52

SHA1
6757ed185df55c6e1e5c196914a179b143d57e42

SHA256
2fc232ad36ec6606905b325fe46ed55dabb7c1379649d02a0dd503bc1bed4d1d

SHA512
5ba5d99f9b558043197764e4a1645faeaf9453e5023fd9ac5575c84b3063912b575bdfeae79411cf95a6dcfb30ab18510e4df087cf5c174265e9828b15a7c364

Download Submit
memory/692-20-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/692-19-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/900-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/900-1-0x0000000002190000-0x0000000002196000-memory.dmp

Filesize
24KB

Download
memory/900-2-0x0000000002190000-0x0000000002196000-memory.dmp

Filesize
24KB

Download
memory/900-3-0x00000000021B0000-0x00000000021B6000-memory.dmp

Filesize
24KB

Download
memory/900-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download