0f724f4a36286a4466f0645518686c4c5d032b37790da30fef16add05777231c

Analysis

max time kernel
149s
max time network
150s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
02/09/2024, 23:51

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General

Target

2024-09-02_4c789a06318714ac77395091dc2f4622_cryptolocker.exe
Size

45KB
MD5

4c789a06318714ac77395091dc2f4622
SHA1

b38195d0b84dae2bcff6cb611e2f96a582505aa4
SHA256

0f724f4a36286a4466f0645518686c4c5d032b37790da30fef16add05777231c
SHA512

a032415ce4f76efe03502bd6b2a08f63b6d87ae0ecbc10cd3de87526b8cbf2456a0565316f1129be77750672a07ab6be78e85bebbdf3a82d675448e8995d84bb
SSDEEP

768:bODOw9UiamWUB2preAr+OfjH/0STX73OBqt:bODOw9acifH+Yt

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2804	lossy.exe

Loads dropped DLL 1 IoCs

pid	Process
2604	2024-09-02_4c789a06318714ac77395091dc2f4622_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2604-8-0x0000000008000000-0x000000000800F000-memory.dmp	upx
behavioral1/files/0x0008000000012115-11.dat	upx
behavioral1/memory/2804-16-0x0000000008000000-0x000000000800F000-memory.dmp	upx
behavioral1/memory/2604-14-0x0000000008000000-0x000000000800F000-memory.dmp	upx
behavioral1/memory/2804-26-0x0000000008000000-0x000000000800F000-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	2024-09-02_4c789a06318714ac77395091dc2f4622_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 2604 wrote to memory of 2804	2604	2024-09-02_4c789a06318714ac77395091dc2f4622_cryptolocker.exe	30
PID 2604 wrote to memory of 2804	2604	2024-09-02_4c789a06318714ac77395091dc2f4622_cryptolocker.exe	30
PID 2604 wrote to memory of 2804	2604	2024-09-02_4c789a06318714ac77395091dc2f4622_cryptolocker.exe	30
PID 2604 wrote to memory of 2804	2604	2024-09-02_4c789a06318714ac77395091dc2f4622_cryptolocker.exe	30

C:\Users\Admin\AppData\Local\Temp\2024-09-02_4c789a06318714ac77395091dc2f4622_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-02_4c789a06318714ac77395091dc2f4622_cryptolocker.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2604
- 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:2804

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
45KB

MD5
70579b4eb72c00bbbb60606862ebb47f

SHA1
ccda498a4d3875e745f283cb1d59ddcd3865ece8

SHA256
22acd57fcfcc3754d81f04da7acf5505cc557b018dde36113278866cb6e5544d

SHA512
89aa0057fddb19c045f05124bd381bbeea34458eebedaaccb51f8b89d52eaa74cd55bc2cfd15948db24dcc047d089e93282e9247e6063516d803ebe88857c306

Download Submit
memory/2604-9-0x0000000000420000-0x0000000000426000-memory.dmp

Filesize
24KB

Download
memory/2604-8-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download
memory/2604-1-0x00000000004A0000-0x00000000004A6000-memory.dmp

Filesize
24KB

Download
memory/2604-0-0x0000000000420000-0x0000000000426000-memory.dmp

Filesize
24KB

Download
memory/2604-14-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download
memory/2804-16-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download
memory/2804-18-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/2804-25-0x0000000000460000-0x0000000000466000-memory.dmp

Filesize
24KB

Download
memory/2804-26-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download