f7cd95fd0a0db32dc0b4677fded62ff3bf37fbddd7f1afd526b2cd4428d74f56

Analysis

max time kernel
148s
max time network
150s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
24/01/2024, 19:26

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General

Target

2024-01-24_b76748b65cfb6d82f13b84494b39053e_cryptolocker.exe
Size

40KB
MD5

b76748b65cfb6d82f13b84494b39053e
SHA1

5024c7f34038abd41ea9dfea5c838243ab08cd60
SHA256

f7cd95fd0a0db32dc0b4677fded62ff3bf37fbddd7f1afd526b2cd4428d74f56
SHA512

77c3d2a35977a14dbfc8ec2151b1d48b9c1b6b6e696fa3fe8833ba62f75c486af3b128a623cda475157a49b6c6b11749984cca3dd3f1bbd69fd811ddad196b18
SSDEEP

768:bIDOw9UiaCHfjnE0Sf88AvvP1oghYvm9/6Dy8PEe:bIDOw9a0Dwo3P1ojvUSDhce

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000b000000012251-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
1824	lossy.exe

Loads dropped DLL 1 IoCs

pid	Process
1668	2024-01-24_b76748b65cfb6d82f13b84494b39053e_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 1668 wrote to memory of 1824	1668	2024-01-24_b76748b65cfb6d82f13b84494b39053e_cryptolocker.exe	28
PID 1668 wrote to memory of 1824	1668	2024-01-24_b76748b65cfb6d82f13b84494b39053e_cryptolocker.exe	28
PID 1668 wrote to memory of 1824	1668	2024-01-24_b76748b65cfb6d82f13b84494b39053e_cryptolocker.exe	28
PID 1668 wrote to memory of 1824	1668	2024-01-24_b76748b65cfb6d82f13b84494b39053e_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-01-24_b76748b65cfb6d82f13b84494b39053e_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-24_b76748b65cfb6d82f13b84494b39053e_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1668
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  PID:1824

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\lossy.exe

Filesize
40KB

MD5
e67455d6b61e51af6bd7c61f78a89aca

SHA1
7fc6c4552b01efd2487e8255957d329193136b02

SHA256
7bc019d51da756ef9f517750a2cec533a0f4af79997f367fcc3ba6faf6d22e31

SHA512
25aaf5e9ba80a785dfc7151834b6178db5d92a0c7f4cc2ec7573271be65f603dff027680121db5d320d506635f3238fbd0f073346ff572d481f8bfb2252f1ddc

Download Submit
memory/1668-0-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/1668-1-0x0000000000310000-0x0000000000316000-memory.dmp

Filesize
24KB

Download
memory/1668-8-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/1824-15-0x0000000000390000-0x0000000000396000-memory.dmp

Filesize
24KB

Download
memory/1824-22-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download