f0da534b75b006988a37aec7bd16ba4bcca96beaf40170a6b34778e861819903

Analysis

max time kernel
149s
max time network
150s
platform
windows7_x64
resource
win7-20240215-en
resource tags

arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
submitted
17/04/2024, 20:58

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General

Target

2024-04-17_f9c830de413aa52e6721d4d40c29def5_cryptolocker.exe
Size

41KB
MD5

f9c830de413aa52e6721d4d40c29def5
SHA1

9c25ae1bdcf72f1a714a7b856497702e594e7a68
SHA256

f0da534b75b006988a37aec7bd16ba4bcca96beaf40170a6b34778e861819903
SHA512

37d7f4539840e09cadc46b52b4818c37d400dcaeac3fab3287b6ab5e879d3558e7246733b932034b2b33848b0b4a3e6010172eeb31ddf11b3fa1bd2cbc080515
SSDEEP

768:bCDOw9UiaKHfjnD0S16avdrQFiLjJvtAnav:bCDOw9aMDooc+vAav

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2940-16-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000c00000001233c-24.dat	CryptoLocker_rule2
behavioral1/memory/2240-15-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2240-0-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2940-26-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2940	lossy.exe

Loads dropped DLL 1 IoCs

pid	Process
2240	2024-04-17_f9c830de413aa52e6721d4d40c29def5_cryptolocker.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2240 wrote to memory of 2940	2240	2024-04-17_f9c830de413aa52e6721d4d40c29def5_cryptolocker.exe	28
PID 2240 wrote to memory of 2940	2240	2024-04-17_f9c830de413aa52e6721d4d40c29def5_cryptolocker.exe	28
PID 2240 wrote to memory of 2940	2240	2024-04-17_f9c830de413aa52e6721d4d40c29def5_cryptolocker.exe	28
PID 2240 wrote to memory of 2940	2240	2024-04-17_f9c830de413aa52e6721d4d40c29def5_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-17_f9c830de413aa52e6721d4d40c29def5_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-17_f9c830de413aa52e6721d4d40c29def5_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2240
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  PID:2940

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

C:\Users\Admin\AppData\Local\Temp\lossy.exe

Filesize
41KB

MD5
d68337e2e37148cb584fb7980b2e23f5

SHA1
5734ce720e77145fef6ccc52fb65e77c4d764874

SHA256
edec08eade2bf2e68b34b9caf327f7afad4af30a3946953c78b346a2c4ed3fc7

SHA512
5ed025b04c0900c151d5f78b2ebe0bcb14d25dd1f369943abd554abd9b166904eab4c73cdfdedd97f2669fa49b6c1d13eb2be1c92d67186401beff8b57d8465d

Download Submit
memory/2240-9-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2240-15-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/2240-2-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/2240-1-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2240-0-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/2940-16-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/2940-25-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2940-18-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/2940-26-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download