b831e3ca222c9a6c80af3605c2563b736f29f619903d4088d254b7e1411fe005

Analysis

max time kernel
152s
max time network
177s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
09-01-2024 06:47

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General

Target

2024-01-08_c8fafe71d73546282a0162fac37c5a5d_cryptolocker.exe
Size

42KB
MD5

c8fafe71d73546282a0162fac37c5a5d
SHA1

e40fbc145041c20817e74137d326cdb2edd9468e
SHA256

b831e3ca222c9a6c80af3605c2563b736f29f619903d4088d254b7e1411fe005
SHA512

fce111f13d099a6944b1aed23ac228ed538fc3a1f8c8ea6f0d97c63a9b96793fec8708ae910f57cfbf80ddbeff423032377694162d39ee8783c1f27972f7aa78
SSDEEP

768:b7o/2n1TCraU6GD1a4Xcn62TUdcuQlqJ51mwuepE:bc/y2lm6Y0AqJ51mwuX

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2704	rewok.exe

Loads dropped DLL 1 IoCs

pid	Process
2468	2024-01-08_c8fafe71d73546282a0162fac37c5a5d_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
2468	2024-01-08_c8fafe71d73546282a0162fac37c5a5d_cryptolocker.exe
2704	rewok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2468 wrote to memory of 2704	2468	2024-01-08_c8fafe71d73546282a0162fac37c5a5d_cryptolocker.exe	19
PID 2468 wrote to memory of 2704	2468	2024-01-08_c8fafe71d73546282a0162fac37c5a5d_cryptolocker.exe	19
PID 2468 wrote to memory of 2704	2468	2024-01-08_c8fafe71d73546282a0162fac37c5a5d_cryptolocker.exe	19
PID 2468 wrote to memory of 2704	2468	2024-01-08_c8fafe71d73546282a0162fac37c5a5d_cryptolocker.exe	19

C:\Users\Admin\AppData\Local\Temp\2024-01-08_c8fafe71d73546282a0162fac37c5a5d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-08_c8fafe71d73546282a0162fac37c5a5d_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2468
- 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:2704

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

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

Filesize
5KB

MD5
cc612018012bed32a988530a466b0ff6

SHA1
c4d65a53d274d4bdf339cc42508a5a4aed124bea

SHA256
402c3ab0a284e225b9f1dd12f10a70bc355d64a52b4d2ecafab13b53b55f59a6

SHA512
f9019b14fea38ec7e64f20bdac7d0c440247dad93e2b97adb7e0a15e89af943759f85956a56d933d543ddf5b2e45a1cdf729ac16b193215f76e86bbcfe25ee67

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

Filesize
42KB

MD5
fd015a25d844f54ca72e1e488488e324

SHA1
102ff1fc2a1182e16092c2c43d07f63b889ac22e

SHA256
41fb7e9746dd98257f574ba87c5ed7e92ce0696726a169dd01785437e3fdca0f

SHA512
e23f2ffd2e558e80279f2939297ba88ce9bd3e3abc10ae1b0cc5a6a9443e324be4cbf1ab91fb5775279954a33c6af4e0605b40d801746b7ed3080210790c2309

Download Submit
memory/2468-0-0x00000000001F0000-0x00000000001F6000-memory.dmp

Filesize
24KB

Download
memory/2468-1-0x00000000001F0000-0x00000000001F6000-memory.dmp

Filesize
24KB

Download
memory/2468-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2704-23-0x0000000000260000-0x0000000000266000-memory.dmp

Filesize
24KB

Download