15cda9128af9baf80d3b4c2326328cfb7a3cac2baecbb9471bce96a6740afbfa

Analysis

max time kernel
141s
max time network
139s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
01/10/2024, 20:00

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General

Target

2024-10-01_5d5129f1b4e2466391c6060808adf135_cryptolocker.exe
Size

39KB
MD5

5d5129f1b4e2466391c6060808adf135
SHA1

ded708457c651a4e0715a5365508cf0fc5397d5a
SHA256

15cda9128af9baf80d3b4c2326328cfb7a3cac2baecbb9471bce96a6740afbfa
SHA512

9993a4fb3d88cfd167735e18b3b8e4700dc69aaf8de1d1fe763946f80c3c291bdddbe22050613991a19b0f5edee76d22603b1619cb6d4d0ff26fe44bfe33e4e8
SSDEEP

768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITnf:qDdFJy3QMOtEvwDpjjWMl7Tf

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2308	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2504	2024-10-01_5d5129f1b4e2466391c6060808adf135_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2504-1-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x0007000000012119-11.dat	upx
behavioral1/memory/2308-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2504-15-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2308-26-0x0000000000500000-0x0000000000510000-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	2024-10-01_5d5129f1b4e2466391c6060808adf135_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 2504 wrote to memory of 2308	2504	2024-10-01_5d5129f1b4e2466391c6060808adf135_cryptolocker.exe	30
PID 2504 wrote to memory of 2308	2504	2024-10-01_5d5129f1b4e2466391c6060808adf135_cryptolocker.exe	30
PID 2504 wrote to memory of 2308	2504	2024-10-01_5d5129f1b4e2466391c6060808adf135_cryptolocker.exe	30
PID 2504 wrote to memory of 2308	2504	2024-10-01_5d5129f1b4e2466391c6060808adf135_cryptolocker.exe	30

C:\Users\Admin\AppData\Local\Temp\2024-10-01_5d5129f1b4e2466391c6060808adf135_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-10-01_5d5129f1b4e2466391c6060808adf135_cryptolocker.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2504
- 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:2308

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
39KB

MD5
7e1fd23dea411cf83b14271e0effaf88

SHA1
3e173044143401ccf01cf5a6b032624e22039738

SHA256
0dee51fb60c22c7bea33275259cadecb116f664b1b2fc65c00bb0fc6b69907d0

SHA512
92e9bb91ed7233ac41438afbb344b5e9f66bdad0d25362a9492d070dadae20f097cbae6aa0694ffb218c9ccf86fbd0eb2dcabd654d8c32953f59d3b7c9f3f994

Download Submit
memory/2308-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2308-19-0x00000000004A0000-0x00000000004A6000-memory.dmp

Filesize
24KB

Download
memory/2308-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2504-2-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2504-9-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2504-1-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2504-0-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2504-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download