a14cf55e41b66b3e02f9665b268019f0776e2c7b9846e451b8d89a385e251e93

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
29/03/2024, 03:49

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General

Target

2024-03-29_85a6705e18b0a586e97de3504157976f_cryptolocker.exe
Size

98KB
MD5

85a6705e18b0a586e97de3504157976f
SHA1

0c64f1933da23e6b48527ef18b1c86a440c1deee
SHA256

a14cf55e41b66b3e02f9665b268019f0776e2c7b9846e451b8d89a385e251e93
SHA512

f1477014c00b1c0afe36413efedf176f9fcf7436fa3ee58f5a6053f419820709a2a784b613991decf96f8133e0d2039b1fce1044b3afdc4fe813bd47072a83ba
SSDEEP

1536:26QFElP6n+gBQMOtEvwDpjQGYQbN/PKwNCWwO:26a+2OtEvwDpjtzx

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00090000000231fc-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x00090000000231fc-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-1-5-21-983155329-280873152-1838004294-1000\Control Panel\International\Geo\Nation	2024-03-29_85a6705e18b0a586e97de3504157976f_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4896	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 1636 wrote to memory of 4896	1636	2024-03-29_85a6705e18b0a586e97de3504157976f_cryptolocker.exe	86
PID 1636 wrote to memory of 4896	1636	2024-03-29_85a6705e18b0a586e97de3504157976f_cryptolocker.exe	86
PID 1636 wrote to memory of 4896	1636	2024-03-29_85a6705e18b0a586e97de3504157976f_cryptolocker.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-03-29_85a6705e18b0a586e97de3504157976f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-29_85a6705e18b0a586e97de3504157976f_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1636
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4896

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
98KB

MD5
c62599a0205f5024267b5ed1d9d013e6

SHA1
aa041a47c34f742d0090408a6bee2eaa25601262

SHA256
7eded5215399e4373ce60fdfe1d1d74d3e4edc945bce3d1bcce7000f4ce74ec7

SHA512
5e2612e3241fe9ec35815a9e035bf82d278d10f6d8774407c5ff7d9fc33c56e24ea6f8e577e282256203454c32b22030a9bc2fd405225fb24f9a2699861bb73c

Download Submit
memory/1636-0-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/1636-1-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/1636-2-0x0000000000760000-0x0000000000766000-memory.dmp

Filesize
24KB

Download
memory/4896-17-0x00000000006D0000-0x00000000006D6000-memory.dmp

Filesize
24KB

Download