fc24eb63043824e764822f392693c9e333128c434d551f9e497361ad859bd153

Analysis

max time kernel
150s
max time network
151s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
19/09/2024, 03:44

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General

Target

2024-09-19_e81aac4a9f5cd2a815bc0ee8c7f3f4a5_cryptolocker.exe
Size

53KB
MD5

e81aac4a9f5cd2a815bc0ee8c7f3f4a5
SHA1

bd9ecea8af5278668b2dadcbe717e301151313ea
SHA256

fc24eb63043824e764822f392693c9e333128c434d551f9e497361ad859bd153
SHA512

a4a6a2ca16737c59d7f3453fddc85cd9f8c580a51e628465a3f488337a300dc104d5f65a9ef0127fe907bb5e5614078e309020fd01708fb27da862e02442ee1f
SSDEEP

768:bODOw9UiamWUB2preAr+OfjH/0S16avdrQFiLjJvtOue:bODOw9acifAoc+vk

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2332	lossy.exe

Loads dropped DLL 1 IoCs

pid	Process
3048	2024-09-19_e81aac4a9f5cd2a815bc0ee8c7f3f4a5_cryptolocker.exe

UPX packed file 5 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/memory/3048-0-0x0000000008000000-0x000000000800F000-memory.dmp	upx
behavioral1/files/0x0007000000012119-11.dat	upx
behavioral1/memory/2332-17-0x0000000008000000-0x000000000800F000-memory.dmp	upx
behavioral1/memory/3048-16-0x0000000008000000-0x000000000800F000-memory.dmp	upx
behavioral1/memory/2332-27-0x0000000008000000-0x000000000800F000-memory.dmp	upx

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	lossy.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-09-19_e81aac4a9f5cd2a815bc0ee8c7f3f4a5_cryptolocker.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3048 wrote to memory of 2332	3048	2024-09-19_e81aac4a9f5cd2a815bc0ee8c7f3f4a5_cryptolocker.exe	30
PID 3048 wrote to memory of 2332	3048	2024-09-19_e81aac4a9f5cd2a815bc0ee8c7f3f4a5_cryptolocker.exe	30
PID 3048 wrote to memory of 2332	3048	2024-09-19_e81aac4a9f5cd2a815bc0ee8c7f3f4a5_cryptolocker.exe	30
PID 3048 wrote to memory of 2332	3048	2024-09-19_e81aac4a9f5cd2a815bc0ee8c7f3f4a5_cryptolocker.exe	30

C:\Users\Admin\AppData\Local\Temp\2024-09-19_e81aac4a9f5cd2a815bc0ee8c7f3f4a5_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-19_e81aac4a9f5cd2a815bc0ee8c7f3f4a5_cryptolocker.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3048
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:2332

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
53KB

MD5
c099b3bd15d5677744ca052561bba6b4

SHA1
9e11f75f520c44a85bc57b3f541cb6ae630dc090

SHA256
19e0b04d399869c0cbcc3d7bb2d8fb4558ca4b747594efe4370ac5833e3ca020

SHA512
e8679d3b1809b4056bfbecd91810840c27c62781d27182e100762c3e23f9866dba1b70c0003719f58967807c1af6367732d92fcab243ec54d5e9a505a16b18b1

Download Submit
memory/2332-17-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download
memory/2332-26-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2332-19-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/2332-27-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download
memory/3048-0-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download
memory/3048-1-0x0000000000250000-0x0000000000256000-memory.dmp

Filesize
24KB

Download
memory/3048-2-0x0000000000480000-0x0000000000486000-memory.dmp

Filesize
24KB

Download
memory/3048-9-0x0000000000250000-0x0000000000256000-memory.dmp

Filesize
24KB

Download
memory/3048-13-0x0000000002A70000-0x0000000002A7F000-memory.dmp

Filesize
60KB

Download
memory/3048-16-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download