209ea771fd01bc9c9c32fad8909e947cc24d34c7d4857772dbff70cfca07495c

Analysis

max time kernel
150s
max time network
153s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
02-10-2024 03:24

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General

Target

2024-10-02_5e0c7e4f258b5a336a60cc18d6a04b23_cryptolocker.exe
Size

28KB
MD5

5e0c7e4f258b5a336a60cc18d6a04b23
SHA1

30b7d74cc20003fa64e1e8c74945be9065bece69
SHA256

209ea771fd01bc9c9c32fad8909e947cc24d34c7d4857772dbff70cfca07495c
SHA512

b029d66af0f3e1111d14a1bd9296fdc6ead4bb088a5abc9924c899f9d871e72bfe4eaf4d63b15bff96ef14a7ee3bb3bf0d98eefc975ccb0156d15ee369a34ab6
SSDEEP

768:bFgm5zusFUB2preAr+Ofjg0STX73OBqZV:bFgmpiifY+Yr

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2616	lossy.exe

Loads dropped DLL 1 IoCs

pid	Process
2656	2024-10-02_5e0c7e4f258b5a336a60cc18d6a04b23_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2656-0-0x0000000008000000-0x000000000800E000-memory.dmp	upx
behavioral1/files/0x0009000000012255-11.dat	upx
behavioral1/memory/2656-17-0x0000000008000000-0x000000000800E000-memory.dmp	upx
behavioral1/memory/2616-18-0x0000000008000000-0x000000000800E000-memory.dmp	upx
behavioral1/memory/2616-28-0x0000000008000000-0x000000000800E000-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	2024-10-02_5e0c7e4f258b5a336a60cc18d6a04b23_cryptolocker.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2656 wrote to memory of 2616	2656	2024-10-02_5e0c7e4f258b5a336a60cc18d6a04b23_cryptolocker.exe	30
PID 2656 wrote to memory of 2616	2656	2024-10-02_5e0c7e4f258b5a336a60cc18d6a04b23_cryptolocker.exe	30
PID 2656 wrote to memory of 2616	2656	2024-10-02_5e0c7e4f258b5a336a60cc18d6a04b23_cryptolocker.exe	30
PID 2656 wrote to memory of 2616	2656	2024-10-02_5e0c7e4f258b5a336a60cc18d6a04b23_cryptolocker.exe	30

C:\Users\Admin\AppData\Local\Temp\2024-10-02_5e0c7e4f258b5a336a60cc18d6a04b23_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-10-02_5e0c7e4f258b5a336a60cc18d6a04b23_cryptolocker.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2656
- 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:2616

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

Replay Monitor

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Downloads

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

Filesize
28KB

MD5
135e88846d1b5cdfaad1f994ad4e7e13

SHA1
00e844fcca9bb5e3efd737a6f592c77b470dd98b

SHA256
234239f30c7c6571bedb965d8d95a1685bb4efe96544f4d8f4a8eddd7dc217ac

SHA512
08b4f3635aa99ec7a16d1c6eedffc3024457c9555132da184e4130b36f834f1b7693fe0a44be6fbf6333c9b267f011157fa91514e48817dd41cce808d2cc717f

Download Submit
memory/2616-18-0x0000000008000000-0x000000000800E000-memory.dmp

Filesize
56KB

Download
memory/2616-20-0x00000000002F0000-0x00000000002F6000-memory.dmp

Filesize
24KB

Download
memory/2616-27-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2616-28-0x0000000008000000-0x000000000800E000-memory.dmp

Filesize
56KB

Download
memory/2656-0-0x0000000008000000-0x000000000800E000-memory.dmp

Filesize
56KB

Download
memory/2656-2-0x0000000000330000-0x0000000000336000-memory.dmp

Filesize
24KB

Download
memory/2656-9-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/2656-1-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/2656-13-0x00000000023B0000-0x00000000023BE000-memory.dmp

Filesize
56KB

Download
memory/2656-17-0x0000000008000000-0x000000000800E000-memory.dmp

Filesize
56KB

Download