fbbd66859476c2b59920583eb6d5141f8c8850bd1090437cbbc75a5039eef9b9

Analysis

max time kernel
18s
max time network
123s
platform
windows7_x64
resource
win7-20240215-en
resource tags

arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
submitted
26-04-2024 03:47

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General

Target

2024-04-26_68f4139dd96d306f12d2d4bffc7ac25f_cryptolocker.exe
Size

32KB
MD5

68f4139dd96d306f12d2d4bffc7ac25f
SHA1

753e5506fe6a0863be2b44b41d2b986c240f14f2
SHA256

fbbd66859476c2b59920583eb6d5141f8c8850bd1090437cbbc75a5039eef9b9
SHA512

18b67b95de8a87abaf1577d73f5584e0b4d54d714e8f5419b921919f177b58333c92c6bd6eba1694f1d83116d27d8b1b3588aebaab7205613f0c5d6bb5baf92b
SSDEEP

384:bM7Q0pjC4GybxMv01d3AcASBQMf6i/zzzcYgUPSznStEkcs8bq:b/yC4GyNM01GuQMNXw2PSjSKkc9bq

Score

9^/10

discovery

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000c000000012326-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2132	retln.exe

Loads dropped DLL 1 IoCs

pid	Process
1728	2024-04-26_68f4139dd96d306f12d2d4bffc7ac25f_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
1728	2024-04-26_68f4139dd96d306f12d2d4bffc7ac25f_cryptolocker.exe
2132	retln.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1728 wrote to memory of 2132	1728	2024-04-26_68f4139dd96d306f12d2d4bffc7ac25f_cryptolocker.exe	28
PID 1728 wrote to memory of 2132	1728	2024-04-26_68f4139dd96d306f12d2d4bffc7ac25f_cryptolocker.exe	28
PID 1728 wrote to memory of 2132	1728	2024-04-26_68f4139dd96d306f12d2d4bffc7ac25f_cryptolocker.exe	28
PID 1728 wrote to memory of 2132	1728	2024-04-26_68f4139dd96d306f12d2d4bffc7ac25f_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-26_68f4139dd96d306f12d2d4bffc7ac25f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-26_68f4139dd96d306f12d2d4bffc7ac25f_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:1728
- 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:2132

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
32KB

MD5
4fa05320af4568b3fa8c47df21262f62

SHA1
5e0694e082f8a0c0d8ec5c4f204c328f0b61e14c

SHA256
0024dd558245448c70b0b02e086d0f74c32687f4462833c2f081e96c69d7a5c3

SHA512
bde5986f96fcfb6059363d6b5ae7d2f82941b6012ed7a37e75ec985152ec4f1d25585656fe6c8844b19f5926b5dbbb0c34922ef77121fe4a5157baff7a92d5f9

Download Submit
memory/1728-0-0x0000000000310000-0x0000000000316000-memory.dmp

Filesize
24KB

Download
memory/1728-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/1728-1-0x0000000000310000-0x0000000000316000-memory.dmp

Filesize
24KB

Download
memory/2132-23-0x0000000000350000-0x0000000000356000-memory.dmp

Filesize
24KB

Download