9f8711a99f849daa532f2a780dd7b4ce4c15c43833ce2c5bfbb29ea0ae341ad6

Analysis

max time kernel
120s
max time network
121s
platform
windows7_x64
resource
win7-20240220-en
resource tags

arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
submitted
23-02-2024 20:54

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General

Target

2024-02-23_d40b50ba78ffa063f3e444546e5e2dc4_cryptolocker.exe
Size

34KB
MD5

d40b50ba78ffa063f3e444546e5e2dc4
SHA1

26023ef9a864f745c0c71f9760b05867a6959ab8
SHA256

9f8711a99f849daa532f2a780dd7b4ce4c15c43833ce2c5bfbb29ea0ae341ad6
SHA512

17f8d3b169ad36c89259fe48493035781de4207d09e8ac77d04eacbeee885a05c751aa83e1a767cd31df53f953617fe886f92b3bffbed07596799734694723a1
SSDEEP

384:bM7Q0pjC4GybxMv01d3AcASBQMf6i/zzzcYgUPSzn1KkZQYfI:b/yC4GyNM01GuQMNXw2PSj1POV

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000c000000012331-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2984	retln.exe

Loads dropped DLL 1 IoCs

pid	Process
2348	2024-02-23_d40b50ba78ffa063f3e444546e5e2dc4_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
2348	2024-02-23_d40b50ba78ffa063f3e444546e5e2dc4_cryptolocker.exe
2984	retln.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2348 wrote to memory of 2984	2348	2024-02-23_d40b50ba78ffa063f3e444546e5e2dc4_cryptolocker.exe	28
PID 2348 wrote to memory of 2984	2348	2024-02-23_d40b50ba78ffa063f3e444546e5e2dc4_cryptolocker.exe	28
PID 2348 wrote to memory of 2984	2348	2024-02-23_d40b50ba78ffa063f3e444546e5e2dc4_cryptolocker.exe	28
PID 2348 wrote to memory of 2984	2348	2024-02-23_d40b50ba78ffa063f3e444546e5e2dc4_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-23_d40b50ba78ffa063f3e444546e5e2dc4_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-23_d40b50ba78ffa063f3e444546e5e2dc4_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2348
- 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:2984

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\retln.exe

Filesize
35KB

MD5
42b3e8d5be9cd7b9855a014c856d500c

SHA1
b6154c7a8bd4d5580bedcb27acbca57004a167be

SHA256
2e493fbfe7f9702c4c1f4dc428cdcea98d97be8c094e7c9b97f83e312d3bf78d

SHA512
f973a0073a30eec83393eb5a1725961a4004951c58ca4c810da5b0aaee0930013c81123e65d9423d60915c6b929c91de23e8059c4ca32f995f5fc5237392ba77

Download Submit
memory/2348-0-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/2348-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2348-7-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/2984-23-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download