f55c317c93d2c1d06820cd9c0196b150afa9ada200d4dee42f03b7704dbb9368

Analysis

max time kernel
149s
max time network
150s
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, 07:46

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General

Target

2024-02-25_f781ca23a91095d688d5ef2e3fe78777_cryptolocker.exe
Size

32KB
MD5

f781ca23a91095d688d5ef2e3fe78777
SHA1

867a02d7ee84770d1072fbca74f0d9fbb3a29224
SHA256

f55c317c93d2c1d06820cd9c0196b150afa9ada200d4dee42f03b7704dbb9368
SHA512

bf4e99f283d73df5b1b7c79226159c82aae6d4b910cde02bc746e7737b564fb14e1bcd51df40b16a0ba278524adc0db14a55cff7259db05c78e6e1417d8389d7
SSDEEP

384:bmM0V/YPvnr801TRoUGPh4TKt6ATt1DqgPa3s/zzoCt9/B+1Pj:b7o/2n1TCraU6GD1a4Xt9G

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000b00000001e597-12.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-1-5-21-1712835645-2080934712-2142796781-1000\Control Panel\International\Geo\Nation	2024-02-25_f781ca23a91095d688d5ef2e3fe78777_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2224	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 4120 wrote to memory of 2224	4120	2024-02-25_f781ca23a91095d688d5ef2e3fe78777_cryptolocker.exe	86
PID 4120 wrote to memory of 2224	4120	2024-02-25_f781ca23a91095d688d5ef2e3fe78777_cryptolocker.exe	86
PID 4120 wrote to memory of 2224	4120	2024-02-25_f781ca23a91095d688d5ef2e3fe78777_cryptolocker.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-02-25_f781ca23a91095d688d5ef2e3fe78777_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-25_f781ca23a91095d688d5ef2e3fe78777_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4120
- C:\Users\Admin\AppData\Local\Temp\rewok.exe
  "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
  2⤵
  - Executes dropped EXE
  PID:2224

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
33KB

MD5
59f9e9b8b52801b1c432d692a9ba6a8e

SHA1
49c4ac989284decc6600337f17072fd5945e050c

SHA256
e4d5ffa9f299536ccc2c78f7ecb14148e79976065bc95272b04ff9dcfcd8f2d6

SHA512
89b3b1e2e590295e4f8c8f86933951000a51c635d2c02587ea2b3732a3103c667af4a2c2e20582d3ea87c8f3f246edb4fff7af574df4acf861ef1eccbded846a

Download Submit
memory/2224-21-0x00000000006E0000-0x00000000006E6000-memory.dmp

Filesize
24KB

Download
memory/4120-0-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/4120-1-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/4120-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download