90c73e919e32b4d3a3395a9bc59224d8793028656c32b64637e5ee1479c6ad8c

Analysis

max time kernel
93s
max time network
124s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
29/05/2024, 03:31

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General

Target

2024-05-29_8e1bdac3e0828625c3d64cecfff028f4_cryptolocker.exe
Size

37KB
MD5

8e1bdac3e0828625c3d64cecfff028f4
SHA1

8b202a8e78059df99dbdebc7507d02f9d6cf6c22
SHA256

90c73e919e32b4d3a3395a9bc59224d8793028656c32b64637e5ee1479c6ad8c
SHA512

f15b9fe06d3226f28d3a89e09777d3ef46e3f503fdee656683f05885265741a17cb7415476707dc0252c7574328b4d37b38de7e817a100d3a0d367f89f197283
SSDEEP

768:bAvJCYOOvbRPDEgXrNekd7l94i3pQheDF:bAvJCF+RQgJeab4sb5

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0005000000022f40-12.dat	CryptoLocker_rule2

Checks computer location settings 2 TTPs 2 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-1-5-21-1162180587-977231257-2194346871-1000\Control Panel\International\Geo\Nation	2024-05-29_8e1bdac3e0828625c3d64cecfff028f4_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1162180587-977231257-2194346871-1000\Control Panel\International\Geo\Nation	demka.exe

Executes dropped EXE 1 IoCs

pid	Process
1552	demka.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 4508 wrote to memory of 1552	4508	2024-05-29_8e1bdac3e0828625c3d64cecfff028f4_cryptolocker.exe	82
PID 4508 wrote to memory of 1552	4508	2024-05-29_8e1bdac3e0828625c3d64cecfff028f4_cryptolocker.exe	82
PID 4508 wrote to memory of 1552	4508	2024-05-29_8e1bdac3e0828625c3d64cecfff028f4_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-05-29_8e1bdac3e0828625c3d64cecfff028f4_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-29_8e1bdac3e0828625c3d64cecfff028f4_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4508
- C:\Users\Admin\AppData\Local\Temp\demka.exe
  "C:\Users\Admin\AppData\Local\Temp\demka.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  PID:1552

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\demka.exe

Filesize
37KB

MD5
4417a51ef28a7ad5a38448281b2afcf6

SHA1
364566f4bd2c7ca026d4a6455010c41c0a78fe85

SHA256
b4781ab82be94bfc680ea378fef3c9f1c1b40034e962d9513d926468fc42a136

SHA512
f9fac385bc7e4095c6c8b5fd61e06fb4c4a007a4c9194b11f38ead54d027824ad0e2cce45a0656d676bfa199cc8d34be30662b0d95a7879a9a67885382805529

Download Submit
C:\Users\Admin\AppData\Local\Temp\medkem.exe

Filesize
186B

MD5
b9f4374f896f9983c33e9d0b588f0013

SHA1
b8020e1be1ca994b0c92448b8751de82b01cc9b5

SHA256
6693eb10ef2b6399732cb13c54af5cbb990215fb265d3c2cc13133461b9f4d27

SHA512
fbee8e10e523ac919928b0144d098481fc9ead831f0e00a94d2d55bf17bb55e8186629394cd1c7787f0c0aa9b82f743b1768d03bbc6413205538b29d0541ac74

Download Submit
memory/1552-25-0x0000000002180000-0x0000000002186000-memory.dmp

Filesize
24KB

Download
memory/4508-0-0x00000000021C0000-0x00000000021C6000-memory.dmp

Filesize
24KB

Download
memory/4508-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4508-8-0x00000000021C0000-0x00000000021C6000-memory.dmp

Filesize
24KB

Download