6d2b2d8428cedb1220c36cec55c778a033db0563a289783a01af917e32b93b9e

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
23-04-2024 07:31

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General

Target

2024-04-23_4546a0ea205dd30b184d0da986d0ca76_cryptolocker.exe
Size

43KB
MD5

4546a0ea205dd30b184d0da986d0ca76
SHA1

83bde00c12d292c75176fc3bf188aa48ec2fd788
SHA256

6d2b2d8428cedb1220c36cec55c778a033db0563a289783a01af917e32b93b9e
SHA512

970c51e1d213f604f4c12f743f4a5f6793d7334e97015b198d348588f93fee8563e119b98e7283939f75ab3f8780bf889d519a8c99f6d08c872dd9e3c918a1b9
SSDEEP

768:b7o/2n1TCraU6GD1a4X0WcO+wMVm+slAMphqM:bc/y2lkF0+BeqM

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000800000001db0e-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-1-5-21-1132431369-515282257-1998160155-1000\Control Panel\International\Geo\Nation	2024-04-23_4546a0ea205dd30b184d0da986d0ca76_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1128	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 5064 wrote to memory of 1128	5064	2024-04-23_4546a0ea205dd30b184d0da986d0ca76_cryptolocker.exe	85
PID 5064 wrote to memory of 1128	5064	2024-04-23_4546a0ea205dd30b184d0da986d0ca76_cryptolocker.exe	85
PID 5064 wrote to memory of 1128	5064	2024-04-23_4546a0ea205dd30b184d0da986d0ca76_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-04-23_4546a0ea205dd30b184d0da986d0ca76_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-23_4546a0ea205dd30b184d0da986d0ca76_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:5064
- C:\Users\Admin\AppData\Local\Temp\rewok.exe
  "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
  2⤵
  - Executes dropped EXE
  PID:1128

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
da6e801cf9b5509079a16c45fa454b6c

SHA1
88d79faacdaa7a99556feea882fca7809d0ce4de

SHA256
30b4376d5b6649c6784dfddc55f97703592404894a4c71d8d0c345f71ba37bb7

SHA512
235f4d53b6b8409bf55db839dd30b5a6c38dc7e87f8e0cf2745031a9f7950326798ee657d702be11902a0f8bd265e0381da2125cb474bab483323122765f2d5a

Download Submit
memory/1128-21-0x0000000000770000-0x0000000000776000-memory.dmp

Filesize
24KB

Download
memory/5064-0-0x0000000000740000-0x0000000000746000-memory.dmp

Filesize
24KB

Download
memory/5064-1-0x0000000000740000-0x0000000000746000-memory.dmp

Filesize
24KB

Download
memory/5064-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download