16790ced1757ceb80b02c11e0db6b1dab337383b1fbe588132c46802855721de

Analysis

max time kernel
15s
max time network
123s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
13/03/2024, 16:54

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General

Target

2024-03-13_f03a3622cb80c9f40773135bc3e85d0d_cryptolocker.exe
Size

40KB
MD5

f03a3622cb80c9f40773135bc3e85d0d
SHA1

328b53ea3e431faaf7e0ff052b0cbf065b8a00f6
SHA256

16790ced1757ceb80b02c11e0db6b1dab337383b1fbe588132c46802855721de
SHA512

58ec1d0f5c88b05c329b9a9c7e6c4e650b667c7da6b1c75699529cbb93876d27af2b9f12c95435180d43ab6b6c6a7ac01d1f482b5464058ab2a01c93d82300a7
SSDEEP

768:b/yC4GyNM01GuQMNXw2PSjHPbSuYlZcvf:b/pYayGig5HjS3jcH

Score

9^/10

discovery

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000c00000001224c-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2192	retln.exe

Loads dropped DLL 1 IoCs

pid	Process
2320	2024-03-13_f03a3622cb80c9f40773135bc3e85d0d_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
2320	2024-03-13_f03a3622cb80c9f40773135bc3e85d0d_cryptolocker.exe
2192	retln.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2320 wrote to memory of 2192	2320	2024-03-13_f03a3622cb80c9f40773135bc3e85d0d_cryptolocker.exe	28
PID 2320 wrote to memory of 2192	2320	2024-03-13_f03a3622cb80c9f40773135bc3e85d0d_cryptolocker.exe	28
PID 2320 wrote to memory of 2192	2320	2024-03-13_f03a3622cb80c9f40773135bc3e85d0d_cryptolocker.exe	28
PID 2320 wrote to memory of 2192	2320	2024-03-13_f03a3622cb80c9f40773135bc3e85d0d_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-03-13_f03a3622cb80c9f40773135bc3e85d0d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-13_f03a3622cb80c9f40773135bc3e85d0d_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2320
- 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:2192

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
40KB

MD5
793e5d8cdc243da7952874f29e8514bb

SHA1
6bedc94bab612051160a4efce57ff7ade2640d66

SHA256
c7744c19e36451581d1b55981d1b71eb990fe93f010e483209017d4500514840

SHA512
83897f5ad5c8ab84b019b2d9e750256ad3a75f289fb893deb7123c139d5d85c66408e82180072930e7fe446caa249b351430232c4b88d51ea9ae2b50a985b9e0

Download Submit
memory/2320-0-0x00000000002E0000-0x00000000002E6000-memory.dmp

Filesize
24KB

Download
memory/2320-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2320-4-0x00000000002E0000-0x00000000002E6000-memory.dmp

Filesize
24KB

Download