293e6bcf5cc5b6fd823c6b19add8afe6c8cc5667ee0af3dadf44a8402db87e58

Analysis

max time kernel
10s
max time network
119s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
28/05/2024, 01:29

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General

Target

2024-05-28_3e4484ff7ae9201d33b4db6767db8832_cryptolocker.exe
Size

31KB
MD5

3e4484ff7ae9201d33b4db6767db8832
SHA1

2ce091b1254e7e477a59125905e59021d5d36673
SHA256

293e6bcf5cc5b6fd823c6b19add8afe6c8cc5667ee0af3dadf44a8402db87e58
SHA512

acb995a6d752262fff2ecb21ff79cc4581e66fc4dac3e150fdd0a0120e110591c241996f612a3e393f223af8f25aba9b06f5795b80ff67877c69bb9217d4fcc2
SSDEEP

384:bM7Q0pjC4GybxMv01d3AcASBQMf6i/zznum+U8Ss87vh3:b/yC4GyNM01GuQMNXum+NSn3

Score

9^/10

discovery

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000c000000012286-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2704	retln.exe

Loads dropped DLL 1 IoCs

pid	Process
3068	2024-05-28_3e4484ff7ae9201d33b4db6767db8832_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
3068	2024-05-28_3e4484ff7ae9201d33b4db6767db8832_cryptolocker.exe
2704	retln.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3068 wrote to memory of 2704	3068	2024-05-28_3e4484ff7ae9201d33b4db6767db8832_cryptolocker.exe	28
PID 3068 wrote to memory of 2704	3068	2024-05-28_3e4484ff7ae9201d33b4db6767db8832_cryptolocker.exe	28
PID 3068 wrote to memory of 2704	3068	2024-05-28_3e4484ff7ae9201d33b4db6767db8832_cryptolocker.exe	28
PID 3068 wrote to memory of 2704	3068	2024-05-28_3e4484ff7ae9201d33b4db6767db8832_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-28_3e4484ff7ae9201d33b4db6767db8832_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-28_3e4484ff7ae9201d33b4db6767db8832_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:3068
- 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
31KB

MD5
e46cc3d1dabb4928b2abcf056fc41b6f

SHA1
be3cbcaa5c3d1019ab1801f789f3f23d20067c40

SHA256
58d6dda9aa697d05e4a337d98cf72818fd95b846bef15f4a7985495de483cecc

SHA512
f772df1ac9623a0406dab9532721d74afc0b9d97df37dd5c4578e58237cfb55f261f32dfe7d4d4bf559e299d8c4889b2339ea6171c3495f42516c7135aa13e0c

Download Submit
memory/2704-23-0x0000000000310000-0x0000000000316000-memory.dmp

Filesize
24KB

Download
memory/3068-0-0x00000000003C0000-0x00000000003C6000-memory.dmp

Filesize
24KB

Download
memory/3068-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/3068-8-0x00000000003C0000-0x00000000003C6000-memory.dmp

Filesize
24KB

Download