e5c89afd29bebad20a870d9258cf30caa5cdb2db789bad5388570d18f75d52d7

Analysis

max time kernel
150s
max time network
158s
platform
windows10-2004_x64
resource
win10v2004-20240221-en
resource tags

arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
submitted
25/02/2024, 17:48

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General

Target

2024-02-25_ba12e0b86fe9e3f4c43acaf25b947e83_cryptolocker.exe
Size

32KB
MD5

ba12e0b86fe9e3f4c43acaf25b947e83
SHA1

9839623c7bc0b20105ee7ef97ea2d624b8f30c7c
SHA256

e5c89afd29bebad20a870d9258cf30caa5cdb2db789bad5388570d18f75d52d7
SHA512

0b246149b6e3f664def624104180940756692fa5dc935ea206d24a3b11f140f8a39fe7c77774877d51ef586f3231dd4682e013bcad88b0b8b2682f283f54472e
SSDEEP

384:bmM0V/YPvnr801TRoUGPh4TKt6ATt1DqgPa3s/zzoCt9/B+OOZm:b7o/2n1TCraU6GD1a4Xt9hgm

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0006000000023133-12.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-1-5-21-3844919115-497234255-166257750-1000\Control Panel\International\Geo\Nation	2024-02-25_ba12e0b86fe9e3f4c43acaf25b947e83_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1656	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 4248 wrote to memory of 1656	4248	2024-02-25_ba12e0b86fe9e3f4c43acaf25b947e83_cryptolocker.exe	87
PID 4248 wrote to memory of 1656	4248	2024-02-25_ba12e0b86fe9e3f4c43acaf25b947e83_cryptolocker.exe	87
PID 4248 wrote to memory of 1656	4248	2024-02-25_ba12e0b86fe9e3f4c43acaf25b947e83_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-02-25_ba12e0b86fe9e3f4c43acaf25b947e83_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-25_ba12e0b86fe9e3f4c43acaf25b947e83_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4248
- C:\Users\Admin\AppData\Local\Temp\rewok.exe
  "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
  2⤵
  - Executes dropped EXE
  PID:1656

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
32KB

MD5
63a66433c430909ddb6395489d6427d9

SHA1
8f27faed9c3f65cfa6951e2651c2f749cb14f9f7

SHA256
bf0869d23b3521b4bbef77475c084f4d827b2cb71bde0ff981016533c6383124

SHA512
e8b930adadb93bf454b32a8e749a6dbfbc37b3c700ec1bdbf64a3b4cee38d478e2bcac0eeb433326d01369cb25d9cca5cbf9dc7e749878e3c62701f94b253666

Download Submit
memory/1656-20-0x0000000002200000-0x0000000002206000-memory.dmp

Filesize
24KB

Download
memory/4248-0-0x00000000022D0000-0x00000000022D6000-memory.dmp

Filesize
24KB

Download
memory/4248-1-0x00000000022D0000-0x00000000022D6000-memory.dmp

Filesize
24KB

Download
memory/4248-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download