27ca84e1d2090d4f3f86760f5864913786f073170ee2c53388f24cd88393db94

Analysis

max time kernel
149s
max time network
153s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
19/04/2024, 02:48

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General

Target

2024-04-19_f383edb1628e2323495f9d347fd81570_cryptolocker.exe
Size

42KB
MD5

f383edb1628e2323495f9d347fd81570
SHA1

6d320dfe25e42a06aa74459a91629ad75d6632b3
SHA256

27ca84e1d2090d4f3f86760f5864913786f073170ee2c53388f24cd88393db94
SHA512

05984db81003c1470f533feb2593ed99db64c614c6ebd6d2a9f5981feee454088fa83d2ec42f0dc0ec599d1b646eb7cd28636219412e57a31580a3f535738e66
SSDEEP

768:b7o/2n1TCraU6GD1a4X0WcO+wMVm+slAMphqI:bc/y2lkF0+BeqI

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x0009000000012256-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2472	rewok.exe

Loads dropped DLL 1 IoCs

pid	Process
2844	2024-04-19_f383edb1628e2323495f9d347fd81570_cryptolocker.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of UnmapMainImage 2 IoCs

pid	Process
2844	2024-04-19_f383edb1628e2323495f9d347fd81570_cryptolocker.exe
2472	rewok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2844 wrote to memory of 2472	2844	2024-04-19_f383edb1628e2323495f9d347fd81570_cryptolocker.exe	28
PID 2844 wrote to memory of 2472	2844	2024-04-19_f383edb1628e2323495f9d347fd81570_cryptolocker.exe	28
PID 2844 wrote to memory of 2472	2844	2024-04-19_f383edb1628e2323495f9d347fd81570_cryptolocker.exe	28
PID 2844 wrote to memory of 2472	2844	2024-04-19_f383edb1628e2323495f9d347fd81570_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-19_f383edb1628e2323495f9d347fd81570_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-19_f383edb1628e2323495f9d347fd81570_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2844
- C:\Users\Admin\AppData\Local\Temp\rewok.exe
  "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of UnmapMainImage
  PID:2472

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

\Users\Admin\AppData\Local\Temp\rewok.exe

Filesize
43KB

MD5
c20b486d88c6e86fd0b2504879dba9dc

SHA1
69f9c64331142331acd98350142b19baa4841240

SHA256
498c12634187a0aaf95a2117fe1ef6980667790c403fcde9b441e7951fabc883

SHA512
752cc29db09a656609d721bea725fa43982bf7ecbebb0f9e904efd45e5db907b86810efdeff793c364bafcdc4c8352eade25e37133e83407e9389d5fd377c686

Download Submit
memory/2472-19-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/2844-0-0x0000000000270000-0x0000000000276000-memory.dmp

Filesize
24KB

Download
memory/2844-1-0x0000000000270000-0x0000000000276000-memory.dmp

Filesize
24KB

Download
memory/2844-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download