8ca79af7a5e61a7a72cd473ce3d77476214bf100b340b58cb0145a4191217e1e

Analysis

max time kernel
3s
max time network
139s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
17/05/2024, 01:25

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General

Target

2024-05-17_7f028eaf61b90fa0fd23c0f5a7459f30_cryptolocker.exe
Size

37KB
MD5

7f028eaf61b90fa0fd23c0f5a7459f30
SHA1

b63a13a8ff9f967d6adbbc278a73a7ca6394b34e
SHA256

8ca79af7a5e61a7a72cd473ce3d77476214bf100b340b58cb0145a4191217e1e
SHA512

aae32340c630f764a7df2e76f14eecce9f48d09850e68d978da7b0d816a7842abc589d6959dd655adcd4655cb96e3e5523c8c7aa2a8f66c9bfe0d36bceb8b7cd
SSDEEP

384:bM7Q0pjC4GybxMv01d3AcASBQMf6i/zzzcYgUPSznHzl6A0X/EIjxua6sY:b/yC4GyNM01GuQMNXw2PSjH+PPxAsY

Score

7^/10

discovery

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
2704	retln.exe
2704	retln.exe

Loads dropped DLL 2 IoCs

pid	Process
2096	2024-05-17_7f028eaf61b90fa0fd23c0f5a7459f30_cryptolocker.exe
2096	2024-05-17_7f028eaf61b90fa0fd23c0f5a7459f30_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 4 IoCs

pid	Process
2096	2024-05-17_7f028eaf61b90fa0fd23c0f5a7459f30_cryptolocker.exe
2704	retln.exe
2096	2024-05-17_7f028eaf61b90fa0fd23c0f5a7459f30_cryptolocker.exe
2704	retln.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2096 wrote to memory of 2704	2096	2024-05-17_7f028eaf61b90fa0fd23c0f5a7459f30_cryptolocker.exe	28
PID 2096 wrote to memory of 2704	2096	2024-05-17_7f028eaf61b90fa0fd23c0f5a7459f30_cryptolocker.exe	28
PID 2096 wrote to memory of 2704	2096	2024-05-17_7f028eaf61b90fa0fd23c0f5a7459f30_cryptolocker.exe	28
PID 2096 wrote to memory of 2704	2096	2024-05-17_7f028eaf61b90fa0fd23c0f5a7459f30_cryptolocker.exe	28
PID 2096 wrote to memory of 2704	2096	2024-05-17_7f028eaf61b90fa0fd23c0f5a7459f30_cryptolocker.exe	28
PID 2096 wrote to memory of 2704	2096	2024-05-17_7f028eaf61b90fa0fd23c0f5a7459f30_cryptolocker.exe	28
PID 2096 wrote to memory of 2704	2096	2024-05-17_7f028eaf61b90fa0fd23c0f5a7459f30_cryptolocker.exe	28
PID 2096 wrote to memory of 2704	2096	2024-05-17_7f028eaf61b90fa0fd23c0f5a7459f30_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-17_7f028eaf61b90fa0fd23c0f5a7459f30_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-17_7f028eaf61b90fa0fd23c0f5a7459f30_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2096
- 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:2704

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
37KB

MD5
78dbdbf9f3f4fb9dbddf367475c56bff

SHA1
70475eb35ffc13341dc43d4aac2de734d84c87c5

SHA256
65d3624b9fb02eb5f934f9e9e12baed8a5b722f7f5da09b00079bbb6435260a8

SHA512
a58c15d2b8d9f89b25c0eddebc7acb5f622830ed684c5431ff62cb019c7a52e68b1602de780bfff035d2f6349e8b901a1e9a436854e8b82b787237edfdb2ab44

Download Submit
memory/2096-0-0x00000000003F0000-0x00000000003F6000-memory.dmp

Filesize
24KB

Download
memory/2096-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2096-8-0x00000000003F0000-0x00000000003F6000-memory.dmp

Filesize
24KB

Download
memory/2096-0-0x00000000003F0000-0x00000000003F6000-memory.dmp

Filesize
24KB

Download
memory/2096-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2096-8-0x00000000003F0000-0x00000000003F6000-memory.dmp

Filesize
24KB

Download
memory/2704-23-0x0000000000380000-0x0000000000386000-memory.dmp

Filesize
24KB

Download
memory/2704-23-0x0000000000380000-0x0000000000386000-memory.dmp

Filesize
24KB

Download