a3dba431c59714ee31201fb8e11c0b6b6db808305522da88b2e2eaa9acb64b9b

Analysis

max time kernel
149s
max time network
153s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
27-01-2024 13:37

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General

Target

2024-01-27_a30fffa9e97003dcf1e3ef43fc8d53b0_cryptolocker.exe
Size

44KB
MD5

a30fffa9e97003dcf1e3ef43fc8d53b0
SHA1

4efc88daa1ce5448ecf036cc235ecb78ef60548d
SHA256

a3dba431c59714ee31201fb8e11c0b6b6db808305522da88b2e2eaa9acb64b9b
SHA512

9589e9792934cd24db5a75b3b859e0c737726ed59bb54a3fb04ac70c3be2617ff3807e17406587d16eda3c714edb40290a8b944300f2f073b4c96e17abf998ff
SSDEEP

768:bIDOw9UiaCHfjnE0Sf88AvvP1oghYvm9/6D8jnPx9UnuCmQ:bIDOw9a0Dwo3P1ojvUSD4PInrmQ

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000a000000012253-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2380	lossy.exe

Loads dropped DLL 1 IoCs

pid	Process
2996	2024-01-27_a30fffa9e97003dcf1e3ef43fc8d53b0_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 2996 wrote to memory of 2380	2996	2024-01-27_a30fffa9e97003dcf1e3ef43fc8d53b0_cryptolocker.exe	28
PID 2996 wrote to memory of 2380	2996	2024-01-27_a30fffa9e97003dcf1e3ef43fc8d53b0_cryptolocker.exe	28
PID 2996 wrote to memory of 2380	2996	2024-01-27_a30fffa9e97003dcf1e3ef43fc8d53b0_cryptolocker.exe	28
PID 2996 wrote to memory of 2380	2996	2024-01-27_a30fffa9e97003dcf1e3ef43fc8d53b0_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-01-27_a30fffa9e97003dcf1e3ef43fc8d53b0_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-27_a30fffa9e97003dcf1e3ef43fc8d53b0_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2996
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  PID:2380

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
44KB

MD5
a468e0b5168e7d30291b47257c9e3d45

SHA1
cbbb26f4cddf028c0719c247f3b8a3d1c02687f8

SHA256
42ce504eea78ba46397eda1f993c157656b27bd8a74e1ec7c5463bd3c308bae9

SHA512
849ac94b3a2742dfa87e0387eb93e0cf9eb5a17924e5c52c266e30559c94d2e2c6af066f20c043d1700246808786a9f993b60ff1575349a079a256b122248fca

Download Submit
memory/2380-15-0x0000000000270000-0x0000000000276000-memory.dmp

Filesize
24KB

Download
memory/2380-17-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2996-0-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2996-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2996-3-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download