613e0e7335f697c0b7c910e1fdc4cd436104c2bfa5d7d75fa225e0cc5758bf3e

Analysis

max time kernel
19s
max time network
124s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
23/04/2024, 07:29

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General

Target

2024-04-23_34ef8733b236b06e8de4b2ff8c08d7ca_cryptolocker.exe
Size

32KB
MD5

34ef8733b236b06e8de4b2ff8c08d7ca
SHA1

59146cb3de71158f80366e523bc12e2e7ea5396d
SHA256

613e0e7335f697c0b7c910e1fdc4cd436104c2bfa5d7d75fa225e0cc5758bf3e
SHA512

87cc5d98c33a595e042a446c70ea92be482730b86f642f796168c83844b9c0af45e2aff2fae82f3a83cf2c4ce6e8ded3928d2c1f2b790adbdf908a981075babd
SSDEEP

384:bM7Q0pjC4GybxMv01d3AcASBQMf6i/zzzcYgUPSznStEkcs8v:b/yC4GyNM01GuQMNXw2PSjSKkc9v

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000900000001223d-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2240	retln.exe

Loads dropped DLL 1 IoCs

pid	Process
1640	2024-04-23_34ef8733b236b06e8de4b2ff8c08d7ca_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
1640	2024-04-23_34ef8733b236b06e8de4b2ff8c08d7ca_cryptolocker.exe
2240	retln.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1640 wrote to memory of 2240	1640	2024-04-23_34ef8733b236b06e8de4b2ff8c08d7ca_cryptolocker.exe	28
PID 1640 wrote to memory of 2240	1640	2024-04-23_34ef8733b236b06e8de4b2ff8c08d7ca_cryptolocker.exe	28
PID 1640 wrote to memory of 2240	1640	2024-04-23_34ef8733b236b06e8de4b2ff8c08d7ca_cryptolocker.exe	28
PID 1640 wrote to memory of 2240	1640	2024-04-23_34ef8733b236b06e8de4b2ff8c08d7ca_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-23_34ef8733b236b06e8de4b2ff8c08d7ca_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-23_34ef8733b236b06e8de4b2ff8c08d7ca_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:1640
- 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:2240

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
32KB

MD5
5bce7348225570bc54d840d9c89253a4

SHA1
86fec397c7133aa776a56d71830432b1a8dca5bf

SHA256
fa3b79d660840e32d17570a834044da71242fb63b787cc434b0e8b3dab98d71e

SHA512
9a8503a7c602eac596331062189f2f41c9b73bfbc1335e6ab76467a2c5e143c4df22107084fe709d3ccafd50634fd68b29a24d57fe54facf89095b8f2e34820d

Download Submit
memory/1640-0-0x00000000003C0000-0x00000000003C6000-memory.dmp

Filesize
24KB

Download
memory/1640-2-0x00000000003C0000-0x00000000003C6000-memory.dmp

Filesize
24KB

Download
memory/1640-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2240-17-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download