755c4b2f88a23980f7c2575183c38c87a1ba4eeedc7e40543a22bb04aea207b3

Analysis

max time kernel
13s
max time network
125s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
10/01/2024, 06:00

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General

Target

2024-01-09_c308eb4f4aec70b51f6159d350deef04_cryptolocker.exe
Size

32KB
MD5

c308eb4f4aec70b51f6159d350deef04
SHA1

d5db9d5ac929f1750416f7f60d5160e367de3fce
SHA256

755c4b2f88a23980f7c2575183c38c87a1ba4eeedc7e40543a22bb04aea207b3
SHA512

201cc354439207ea1bb2ff96288881be79620c99ec64dc622b974eb893236eeef19874fbcabf94f5365067b1e167ad1a80e2a77db01131bc6375054d4928d019
SSDEEP

384:bM7Q0pjC4GybxMv01d3AcASBQMf6i/zzzcYgUPSznStwIoIQ+dHd9PRG:b/yC4GyNM01GuQMNXw2PSjS2uvdHd90

Score

7^/10

discovery

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2720	retln.exe

Loads dropped DLL 1 IoCs

pid	Process
2852	2024-01-09_c308eb4f4aec70b51f6159d350deef04_cryptolocker.exe

Creates a large amount of network flows 1 TTPs
This may indicate a network scan to discover remotely running services.
discovery

Network Service Discovery
T1046
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
2852	2024-01-09_c308eb4f4aec70b51f6159d350deef04_cryptolocker.exe
2720	retln.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2852 wrote to memory of 2720	2852	2024-01-09_c308eb4f4aec70b51f6159d350deef04_cryptolocker.exe	28
PID 2852 wrote to memory of 2720	2852	2024-01-09_c308eb4f4aec70b51f6159d350deef04_cryptolocker.exe	28
PID 2852 wrote to memory of 2720	2852	2024-01-09_c308eb4f4aec70b51f6159d350deef04_cryptolocker.exe	28
PID 2852 wrote to memory of 2720	2852	2024-01-09_c308eb4f4aec70b51f6159d350deef04_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-01-09_c308eb4f4aec70b51f6159d350deef04_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-09_c308eb4f4aec70b51f6159d350deef04_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2852
- C:\Users\Admin\AppData\Local\Temp\retln.exe
  "C:\Users\Admin\AppData\Local\Temp\retln.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of UnmapMainImage
  PID:2720

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Discovery

T1046

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
33KB

MD5
283663eff9984f176e488d6a759e0f74

SHA1
7a1e1afcdee7d9b9dbb93a1a408b4ef495c53c7a

SHA256
c721e891b5502bef00c8111546c9d52a91c63ca0828fdbafe297c58b2f54bbf8

SHA512
458184ea6a30e19628c517eacc8712bc1bb5fb1f63e623ae2ae019b9c70391f5c377ecf6fcd3a9433d94187c1ddbf44badf910a947c7a4897b130386ca4b5025

Download Submit
memory/2720-16-0x00000000001F0000-0x00000000001F6000-memory.dmp

Filesize
24KB

Download
memory/2852-0-0x0000000000260000-0x0000000000266000-memory.dmp

Filesize
24KB

Download
memory/2852-2-0x0000000000260000-0x0000000000266000-memory.dmp

Filesize
24KB

Download
memory/2852-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download