a21fddcea968b0e1a8eff9ebf1c226c574d2133e930a447baed554e165e4a073

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
31/05/2024, 19:47

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General

Target

2024-05-31_3ee209a51a725da5dbf1c23016bdfc49_cryptolocker.exe
Size

39KB
MD5

3ee209a51a725da5dbf1c23016bdfc49
SHA1

77aa5697e421e9153fbcdbd1cf98fbe6256084cb
SHA256

a21fddcea968b0e1a8eff9ebf1c226c574d2133e930a447baed554e165e4a073
SHA512

f235dd7e2daea520aea0fa0872d2c7e03d5946e9071c34f8e70f48833c3a77df1fea2b54c3c7050b8808273c9214e08c3cc273f75da74ce860e0de9be5ce5ed0
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBVaD3TP7DFCw0U:X6QFElP6n+gJQMOtEvwDpjBmzDU5U

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000500000002328d-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000500000002328d-12.dat	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-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	2024-05-31_3ee209a51a725da5dbf1c23016bdfc49_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3712	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 4604 wrote to memory of 3712	4604	2024-05-31_3ee209a51a725da5dbf1c23016bdfc49_cryptolocker.exe	82
PID 4604 wrote to memory of 3712	4604	2024-05-31_3ee209a51a725da5dbf1c23016bdfc49_cryptolocker.exe	82
PID 4604 wrote to memory of 3712	4604	2024-05-31_3ee209a51a725da5dbf1c23016bdfc49_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-05-31_3ee209a51a725da5dbf1c23016bdfc49_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-31_3ee209a51a725da5dbf1c23016bdfc49_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4604
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3712

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
39KB

MD5
60ab673280ba5fef724cca341661e38a

SHA1
a8ade8a7c993dc09f84a89045715379d127cecd1

SHA256
c206096c504ba2de00929a2624181fc816a8e9c4efb1c82a2a9e7be8d436d80c

SHA512
83df60bdc2bbc58f4a5df5b873d379ef1f20539d9a96d4adf3c194fe5fdde843a60eb3f25316e3c89e5c09e52fe95447ba6102f3bca71479c593851f5311b02c

Download Submit
memory/3712-23-0x0000000000560000-0x0000000000566000-memory.dmp

Filesize
24KB

Download
memory/3712-17-0x00000000006D0000-0x00000000006D6000-memory.dmp

Filesize
24KB

Download
memory/4604-0-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4604-1-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/4604-8-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download