3f83853f9dcfdafcc2fdbb3bf2e1eb78012ccd7ef052a9501efc3d53a49655f4

Analysis

max time kernel
1s
max time network
154s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
05/01/2024, 05:51

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General

Target

2024-01-01_de2d2e7a4e681160eeed2501fdf8db23_cryptolocker.exe
Size

56KB
MD5

de2d2e7a4e681160eeed2501fdf8db23
SHA1

2b8a157f7fb60c6e9ba04093c84db3b3c9560d89
SHA256

3f83853f9dcfdafcc2fdbb3bf2e1eb78012ccd7ef052a9501efc3d53a49655f4
SHA512

563882416e27dac42ed1d2cb9bee8aaab0941d6ba81d9a888f2514077256026c7f83550f8565b8d1555f08f9eadc5655682cdc19d2423265ddbef447db5f1ccc
SSDEEP

768:z6LsoEEeegiZPvEhHSG+gzum/kLyMro2GtOOtEvwDpj/YMLam5ax848+hIK:z6QFElP6n+gKmddpMOtEvwDpj9aYan

Score

7^/10

upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2728	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2400	2024-01-01_de2d2e7a4e681160eeed2501fdf8db23_cryptolocker.exe

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2400-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2400-15-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x0009000000012252-25.dat	upx
behavioral1/memory/2728-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x0009000000012252-14.dat	upx
behavioral1/memory/2728-28-0x0000000000500000-0x0000000000510000-memory.dmp	upx

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2400 wrote to memory of 2728	2400	2024-01-01_de2d2e7a4e681160eeed2501fdf8db23_cryptolocker.exe	16
PID 2400 wrote to memory of 2728	2400	2024-01-01_de2d2e7a4e681160eeed2501fdf8db23_cryptolocker.exe	16
PID 2400 wrote to memory of 2728	2400	2024-01-01_de2d2e7a4e681160eeed2501fdf8db23_cryptolocker.exe	16
PID 2400 wrote to memory of 2728	2400	2024-01-01_de2d2e7a4e681160eeed2501fdf8db23_cryptolocker.exe	16

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
1⤵
- Executes dropped EXE
PID:2728

C:\Users\Admin\AppData\Local\Temp\2024-01-01_de2d2e7a4e681160eeed2501fdf8db23_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-01_de2d2e7a4e681160eeed2501fdf8db23_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2400

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
56KB

MD5
5675d43390fefb7dc82721dad8fffc69

SHA1
82baf05002635d3f4e55d98b55e1592728281288

SHA256
8a5fe4c23b82e484826bf5a886fe2e85e5576dc77dd405e5b7499a1115d919ed

SHA512
0c44a1a88c37ec098eb95415916748d43f0d404e8d857f8b37056ab1d6e7815938cbcfc044e7fb542506de981e501a864ad320687588c4dff41c99105f4f4de1

Download Submit
C:\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
53KB

MD5
948156bfeec6400002ca6fc791c9957e

SHA1
596540a03780e65abc3dd34a461208dbeb434aeb

SHA256
ed8528e686bbd5dfdde6617e10973357751d46622515455b244622df05aa5b83

SHA512
cbdb3fef749111915baa5715b3a249bfa6d80de727de234bd7710d1e3bd8dc69eefe4840d73aada7e7d23da176b3085295145d7253e382d4fa78a7021045aa5e

Download Submit
memory/2400-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2400-1-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2400-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2400-2-0x0000000000200000-0x0000000000206000-memory.dmp

Filesize
24KB

Download
memory/2400-16-0x0000000002800000-0x0000000002810000-memory.dmp

Filesize
64KB

Download
memory/2400-3-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2400-27-0x0000000002800000-0x0000000002810000-memory.dmp

Filesize
64KB

Download
memory/2728-26-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2728-19-0x0000000000330000-0x0000000000336000-memory.dmp

Filesize
24KB

Download
memory/2728-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2728-28-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download