1df444882d755894078341007425375c2798008d99942fdb14d80f3411054f83

Analysis

max time kernel
132s
max time network
141s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
07/09/2024, 09:25

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General

Target

2024-09-07_2b91040a567a3e73590fbc036a3847f3_cryptolocker.exe
Size

59KB
MD5

2b91040a567a3e73590fbc036a3847f3
SHA1

aed8e41b1a275f32e96f55f82b348e9b1facb34a
SHA256

1df444882d755894078341007425375c2798008d99942fdb14d80f3411054f83
SHA512

9c2c476b7fa355d09c7739b9d823b0c8aea13504787522a5e10ffdc26da54fb118e7a447f3ff2d99e7252c1e9c9db4dd1160b2d0f4923f5b013804007ec739e1
SSDEEP

768:H6LsoEEeegiZPvEhHSG+gk5NQXtckstOOtEvwDpjhBaD3TUogs/VXpAP3q+:H6QFElP6n+gou9cvMOtEvwDpjCpVXh+

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2488	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2436	2024-09-07_2b91040a567a3e73590fbc036a3847f3_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2436-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000b000000012281-11.dat	upx
behavioral1/memory/2436-15-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2488-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2488-26-0x0000000000500000-0x0000000000510000-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	2024-09-07_2b91040a567a3e73590fbc036a3847f3_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 2436 wrote to memory of 2488	2436	2024-09-07_2b91040a567a3e73590fbc036a3847f3_cryptolocker.exe	32
PID 2436 wrote to memory of 2488	2436	2024-09-07_2b91040a567a3e73590fbc036a3847f3_cryptolocker.exe	32
PID 2436 wrote to memory of 2488	2436	2024-09-07_2b91040a567a3e73590fbc036a3847f3_cryptolocker.exe	32
PID 2436 wrote to memory of 2488	2436	2024-09-07_2b91040a567a3e73590fbc036a3847f3_cryptolocker.exe	32

C:\Users\Admin\AppData\Local\Temp\2024-09-07_2b91040a567a3e73590fbc036a3847f3_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-07_2b91040a567a3e73590fbc036a3847f3_cryptolocker.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2436
- 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:2488

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
59KB

MD5
5d9032789495761e8ebc00625224b456

SHA1
2ad2e5a3391e45ae3c79327e4ab4f5be8b7f89c3

SHA256
95941cbf99a0574eed7524dcf87cf9e1924f411daad92db480c97206437a4ebf

SHA512
cb891411e321a96de28601d3dddf5914363896fc763f5be2a2fcb3b17505558bbdc03201b4ec9b72f923bf53787c65fd0163d5a4b516033ac58dc05481fc93c8

Download Submit
memory/2436-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2436-9-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2436-2-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/2436-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2436-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2488-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2488-25-0x0000000000330000-0x0000000000336000-memory.dmp

Filesize
24KB

Download
memory/2488-18-0x0000000000370000-0x0000000000376000-memory.dmp

Filesize
24KB

Download
memory/2488-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download