16636dadc62cdb86898f8d6d86108cdcce893d1a25333e35fae6b92cff8483f7

Analysis

max time kernel
148s
max time network
149s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
01-10-2024 20:11

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General

Target

2024-10-01_c4043dba0f86c1398b9db1757fdbdddb_cryptolocker.exe
Size

38KB
MD5

c4043dba0f86c1398b9db1757fdbdddb
SHA1

5c42a2f2cb2ca17ad05bf2904dd80c09db31013b
SHA256

16636dadc62cdb86898f8d6d86108cdcce893d1a25333e35fae6b92cff8483f7
SHA512

282fa0d5daa0502975a80fb381756176e309badcf3d045eb4bde61f262f1f4ce16480250d069191b2d9dd4d6a5907979eeeee6eb93e8f04ce775cfe175d19a5d
SSDEEP

768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITs:qDdFJy3QMOtEvwDpjjWMl7Ts

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2944	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2668	2024-10-01_c4043dba0f86c1398b9db1757fdbdddb_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2668-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x00080000000120fb-11.dat	upx
behavioral1/memory/2944-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2668-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2944-27-0x0000000000500000-0x0000000000510000-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	2024-10-01_c4043dba0f86c1398b9db1757fdbdddb_cryptolocker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	asih.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2668 wrote to memory of 2944	2668	2024-10-01_c4043dba0f86c1398b9db1757fdbdddb_cryptolocker.exe	30
PID 2668 wrote to memory of 2944	2668	2024-10-01_c4043dba0f86c1398b9db1757fdbdddb_cryptolocker.exe	30
PID 2668 wrote to memory of 2944	2668	2024-10-01_c4043dba0f86c1398b9db1757fdbdddb_cryptolocker.exe	30
PID 2668 wrote to memory of 2944	2668	2024-10-01_c4043dba0f86c1398b9db1757fdbdddb_cryptolocker.exe	30

C:\Users\Admin\AppData\Local\Temp\2024-10-01_c4043dba0f86c1398b9db1757fdbdddb_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-10-01_c4043dba0f86c1398b9db1757fdbdddb_cryptolocker.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2668
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:2944

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\asih.exe

Filesize
38KB

MD5
359cd7ef6c0e8be5dbe4323748332399

SHA1
b1be4dc5728da3691c844518d427858c4a09de1b

SHA256
82fa7e076738f7ec890cf261af0c81bbb646832165308960e867915d12039d24

SHA512
4a909733693569093cc345c7d83a558207d47974145d96e3a6c80569b58884819249a7ac7abf7d16d55fb45280f194d4c620bd11c04486e6525abd903ffe1336

Download Submit
memory/2668-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2668-1-0x0000000000420000-0x0000000000426000-memory.dmp

Filesize
24KB

Download
memory/2668-2-0x0000000000460000-0x0000000000466000-memory.dmp

Filesize
24KB

Download
memory/2668-9-0x0000000000420000-0x0000000000426000-memory.dmp

Filesize
24KB

Download
memory/2668-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2944-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2944-19-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2944-26-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/2944-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download