311a2277a31e0db836fcd7166156595f2b6de482d5a5f9a7856a57703c39a2ea

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
22/04/2024, 04:42

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General

Target

2024-04-22_014b5b5ac5593638252a793e39cfdbf3_cryptolocker.exe
Size

85KB
MD5

014b5b5ac5593638252a793e39cfdbf3
SHA1

27723cd962960d87c2ec0d2e12cd226a1e7ef0ba
SHA256

311a2277a31e0db836fcd7166156595f2b6de482d5a5f9a7856a57703c39a2ea
SHA512

d12e5c8bb72e4b5d9d075915893ecaab5a60a4346bb178a1e005ff663d6092396526629d6f4175ad35e584bb3878b204d5d5977d53e3ca111885403082b0657b
SSDEEP

768:V6LsoEEeegiZPvEhHSG+gDYQtOOtEvwDpj/MLa5VccPtNw5CS95yFPnYcv:V6QFElP6n+gMQMOtEvwDpjyaLccVNl60

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000300000001e970-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000300000001e970-12.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-1-5-21-2177723727-746291240-1644359950-1000\Control Panel\International\Geo\Nation	2024-04-22_014b5b5ac5593638252a793e39cfdbf3_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2940	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 1624 wrote to memory of 2940	1624	2024-04-22_014b5b5ac5593638252a793e39cfdbf3_cryptolocker.exe	87
PID 1624 wrote to memory of 2940	1624	2024-04-22_014b5b5ac5593638252a793e39cfdbf3_cryptolocker.exe	87
PID 1624 wrote to memory of 2940	1624	2024-04-22_014b5b5ac5593638252a793e39cfdbf3_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-04-22_014b5b5ac5593638252a793e39cfdbf3_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-22_014b5b5ac5593638252a793e39cfdbf3_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1624
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2940

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
85KB

MD5
bae924c6ec44d9c313b82391dc295695

SHA1
56517247ece687f919889a8f7c80301b86c7230d

SHA256
ad1cf95503467329d2b413ab1c7c246087f2d9bbbc94650901b91770705d6137

SHA512
a2af1fe081b0357141a532265f60463f9eb083f023efe9fe6acf8a4402a8922c2337a3bbbc9a2739c2c2ece0010ac577d8b15eb8cc2ef7089e768b6dccc385ad

Download Submit
memory/1624-0-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/1624-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/1624-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/2940-17-0x0000000002100000-0x0000000002106000-memory.dmp

Filesize
24KB

Download
memory/2940-23-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download