9cc4ebef5b6d729120fed42073db5d5efda58f3a5ff110d996cf8cca76217961

Analysis

max time kernel
141s
max time network
142s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
18/10/2024, 00:40

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General

Target

2024-10-18_7731312440cb40730621cd82026de74a_cryptolocker.exe
Size

40KB
MD5

7731312440cb40730621cd82026de74a
SHA1

c40153f702c9ba0c5149f205bce1eda78cba9d8c
SHA256

9cc4ebef5b6d729120fed42073db5d5efda58f3a5ff110d996cf8cca76217961
SHA512

0dbfbc6e6d9a57af218544d4f35037b97df146911698c67abe324c5a21c1e0123effa1164bfc160d3e31063883008f464676c2c044db9ff58804fe571419fdc2
SSDEEP

768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITYaIdM:qDdFJy3QMOtEvwDpjjWMl7TdAM

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1920	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2112	2024-10-18_7731312440cb40730621cd82026de74a_cryptolocker.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2112-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000c00000001226d-11.dat	upx
behavioral1/memory/2112-15-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/1920-26-0x0000000000500000-0x0000000000510000-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	2024-10-18_7731312440cb40730621cd82026de74a_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 2112 wrote to memory of 1920	2112	2024-10-18_7731312440cb40730621cd82026de74a_cryptolocker.exe	30
PID 2112 wrote to memory of 1920	2112	2024-10-18_7731312440cb40730621cd82026de74a_cryptolocker.exe	30
PID 2112 wrote to memory of 1920	2112	2024-10-18_7731312440cb40730621cd82026de74a_cryptolocker.exe	30
PID 2112 wrote to memory of 1920	2112	2024-10-18_7731312440cb40730621cd82026de74a_cryptolocker.exe	30

C:\Users\Admin\AppData\Local\Temp\2024-10-18_7731312440cb40730621cd82026de74a_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-10-18_7731312440cb40730621cd82026de74a_cryptolocker.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2112
- 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:1920

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
40KB

MD5
bb7452d46049dcd594352d2699ab360e

SHA1
a0d669f08436d4826ed7d11ef16740bde8a96146

SHA256
c8c4e2699bc82173d3e179ee65be30f0c00af40027cfe8faef9bfd14bd7e8dd7

SHA512
9fd5903c91475534a94b5b9bb1b4b5314ce7b540a4f9786e50b027825c0ad4854cdcb376b076eb8786ae19f1f72709baaa68cf6db416351b20ac11275d6b0a9e

Download Submit
memory/1920-18-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/1920-19-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/1920-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2112-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2112-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2112-2-0x0000000000380000-0x0000000000386000-memory.dmp

Filesize
24KB

Download
memory/2112-9-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2112-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download