b54246939b3bda7dd25b86cecc5e45b8886268c2c1b8113ba134a153842e82a3

Analysis

max time kernel
149s
max time network
150s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
11-09-2024 11:49

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General

Target

2024-09-11_bdb1e7896c9607069aebf1fb49584f11_cryptolocker.exe
Size

46KB
MD5

bdb1e7896c9607069aebf1fb49584f11
SHA1

39f65628bd728fb3e370d1adcd6200d38d614ac6
SHA256

b54246939b3bda7dd25b86cecc5e45b8886268c2c1b8113ba134a153842e82a3
SHA512

d7bd3d8fe6d037d8e24b0eb13de6ddbb1df6997a0d9962ee148a00ab9ef479bcf4439102d2e6ef301424e8905dc0fb0dd47870677cf9d55a15d161746b34d2d4
SSDEEP

768:buDOw9UiaoWUB2preAr+OfjRW00STX73OBqT:buDOw9aWifVn+YT

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2816	lossy.exe

Loads dropped DLL 1 IoCs

pid	Process
2280	2024-09-11_bdb1e7896c9607069aebf1fb49584f11_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2280-0-0x0000000008000000-0x000000000800F000-memory.dmp	upx
behavioral1/files/0x000700000001211a-11.dat	upx
behavioral1/memory/2816-16-0x0000000008000000-0x000000000800F000-memory.dmp	upx
behavioral1/memory/2280-15-0x0000000008000000-0x000000000800F000-memory.dmp	upx
behavioral1/memory/2816-26-0x0000000008000000-0x000000000800F000-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	lossy.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-09-11_bdb1e7896c9607069aebf1fb49584f11_cryptolocker.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2280 wrote to memory of 2816	2280	2024-09-11_bdb1e7896c9607069aebf1fb49584f11_cryptolocker.exe	30
PID 2280 wrote to memory of 2816	2280	2024-09-11_bdb1e7896c9607069aebf1fb49584f11_cryptolocker.exe	30
PID 2280 wrote to memory of 2816	2280	2024-09-11_bdb1e7896c9607069aebf1fb49584f11_cryptolocker.exe	30
PID 2280 wrote to memory of 2816	2280	2024-09-11_bdb1e7896c9607069aebf1fb49584f11_cryptolocker.exe	30

C:\Users\Admin\AppData\Local\Temp\2024-09-11_bdb1e7896c9607069aebf1fb49584f11_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-11_bdb1e7896c9607069aebf1fb49584f11_cryptolocker.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2280
- 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:2816

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
46KB

MD5
ea854bdaae225cb96d562aba93493a1a

SHA1
b6675aff2b751e5e61df586d5601555047630fb8

SHA256
6f2cfc51d4f0922c139cf4ec93c29bb59cd9f1c7ceed5d284c1c861a1499a204

SHA512
4f1896450a76b7377586d9798045167fe2fc65927abca31a2f246b75c887a11276d24e2b6db4b01cae3c3d9b5670c89338d94858f111db765b6c258eb03a8fb9

Download Submit
memory/2280-0-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download
memory/2280-1-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2280-2-0x0000000000460000-0x0000000000466000-memory.dmp

Filesize
24KB

Download
memory/2280-9-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2280-15-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download
memory/2816-16-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download
memory/2816-25-0x0000000000250000-0x0000000000256000-memory.dmp

Filesize
24KB

Download
memory/2816-18-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/2816-26-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download