ba28bd135b1f957b4435018a77b32ec45aa4bf79db1b1794e8cd5910ee1f7069

Analysis

max time kernel
150s
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
07-03-2024 05:28

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General

Target

2024-03-07_1a22b24fb7c7724fafe2f6da9d1217ad_cryptolocker.exe
Size

43KB
MD5

1a22b24fb7c7724fafe2f6da9d1217ad
SHA1

e4cfe7549b02c02414dd42190127c960c058684d
SHA256

ba28bd135b1f957b4435018a77b32ec45aa4bf79db1b1794e8cd5910ee1f7069
SHA512

7108eb0bc2cc10092791d43034f495471e6a509c17c2717f01b24d9777529b74333f122453c4f1b29078842e0009ae2d82aa119005db5f3b5a8f59991aefeab1
SSDEEP

768:b7o/2n1TCraU6GD1a4X0WcO+wMVm+slAMRqrwGuz:bc/y2lkF0+Bjrduz

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000001e59e-12.dat	CryptoLocker_rule2

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-1-5-21-399997616-3400990511-967324271-1000\Control Panel\International\Geo\Nation	2024-03-07_1a22b24fb7c7724fafe2f6da9d1217ad_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3580	rewok.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 2116 wrote to memory of 3580	2116	2024-03-07_1a22b24fb7c7724fafe2f6da9d1217ad_cryptolocker.exe	87
PID 2116 wrote to memory of 3580	2116	2024-03-07_1a22b24fb7c7724fafe2f6da9d1217ad_cryptolocker.exe	87
PID 2116 wrote to memory of 3580	2116	2024-03-07_1a22b24fb7c7724fafe2f6da9d1217ad_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-03-07_1a22b24fb7c7724fafe2f6da9d1217ad_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-07_1a22b24fb7c7724fafe2f6da9d1217ad_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2116
- C:\Users\Admin\AppData\Local\Temp\rewok.exe
  "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
  2⤵
  - Executes dropped EXE
  PID:3580

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\rewok.exe

Filesize
43KB

MD5
b51f75a3072500f80f1e95528c6c808b

SHA1
5d9fea3258eb3cf3ebffb115412f63da47eee11c

SHA256
b62f18ee4ee34e48564671db279a36d5ae6d932f2d78af98650b057b8518f301

SHA512
b9900f6ac18b9fe2beb1ee3ea096bafb1ea416112b4773918c4a3ead18945246ee4c8941fd63cbc8237b66258af0e87005ecdc6bf44f744ff96e20520452b2c4

Download Submit
memory/2116-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/2116-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/2116-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download