a9b50260159f232fd36cc55b5730cd0ce959a3a8ddc267e4b583553a76afaa0e

Analysis

max time kernel
149s
max time network
151s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
02/10/2024, 02:29

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General

Target

2024-10-02_265dcda37da427d4e41df64e146ebfe0_cryptolocker.exe
Size

28KB
MD5

265dcda37da427d4e41df64e146ebfe0
SHA1

366cce02c587a8615923130b67f35adab53a7c31
SHA256

a9b50260159f232fd36cc55b5730cd0ce959a3a8ddc267e4b583553a76afaa0e
SHA512

8df299f2a5fe5a8d7522339ae040af76af5551aa9c50a1d0c87a627969d4b2dbb4a4be243ea49947544a12946ea12f94a7402e1643ad06107a2506bacd2a8f8f
SSDEEP

384:bFgFQrdSmuQ8WFqxpj5cpyIuYxVe3FSr+OLfjDp+0g/HNblX7QCOBqN:bFgm5zusFUB2preAr+Ofjg0STX73OBqN

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2328	lossy.exe

Loads dropped DLL 1 IoCs

pid	Process
2464	2024-10-02_265dcda37da427d4e41df64e146ebfe0_cryptolocker.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2464-0-0x0000000008000000-0x000000000800E000-memory.dmp	upx
behavioral1/files/0x000d00000001226d-11.dat	upx
behavioral1/memory/2464-17-0x0000000008000000-0x000000000800E000-memory.dmp	upx
behavioral1/memory/2328-27-0x0000000008000000-0x000000000800E000-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	2024-10-02_265dcda37da427d4e41df64e146ebfe0_cryptolocker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	lossy.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2464 wrote to memory of 2328	2464	2024-10-02_265dcda37da427d4e41df64e146ebfe0_cryptolocker.exe	31
PID 2464 wrote to memory of 2328	2464	2024-10-02_265dcda37da427d4e41df64e146ebfe0_cryptolocker.exe	31
PID 2464 wrote to memory of 2328	2464	2024-10-02_265dcda37da427d4e41df64e146ebfe0_cryptolocker.exe	31
PID 2464 wrote to memory of 2328	2464	2024-10-02_265dcda37da427d4e41df64e146ebfe0_cryptolocker.exe	31

C:\Users\Admin\AppData\Local\Temp\2024-10-02_265dcda37da427d4e41df64e146ebfe0_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-10-02_265dcda37da427d4e41df64e146ebfe0_cryptolocker.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2464
- 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:2328

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
83376d1276793e71d678f8e847b9cfbc

SHA1
950fcb333b218808ae711ac3f9051117dfbf1feb

SHA256
8d37b133f730b9052b7b0486f1d11218a85d9328c4ea77d346d5e71450d0a246

SHA512
5a65de399597f14a215a4c3c8db58f4f1e402a28c2fe15af23e388765a8ed7fcefc259d8e210642f07e8bec4418c29612f60730e91364083b1cf3a44fe98b33c

Download Submit
memory/2328-20-0x0000000000310000-0x0000000000316000-memory.dmp

Filesize
24KB

Download
memory/2328-19-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2328-27-0x0000000008000000-0x000000000800E000-memory.dmp

Filesize
56KB

Download
memory/2464-0-0x0000000008000000-0x000000000800E000-memory.dmp

Filesize
56KB

Download
memory/2464-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2464-2-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/2464-9-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2464-17-0x0000000008000000-0x000000000800E000-memory.dmp

Filesize
56KB

Download
memory/2464-14-0x0000000002730000-0x000000000273E000-memory.dmp

Filesize
56KB

Download