dfea9841d19d5d03a321d1a8c478e6844aaab5ea2636049f9a35b412461266fa

Analysis

max time kernel
140s
max time network
143s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
18/10/2024, 10:00

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General

Target

2024-10-18_438cbd3f29722c554727e51ccd79e46d_cryptolocker.exe
Size

39KB
MD5

438cbd3f29722c554727e51ccd79e46d
SHA1

0bfa0f5126c0b8a38b81c36d1e4c4f067f4b57eb
SHA256

dfea9841d19d5d03a321d1a8c478e6844aaab5ea2636049f9a35b412461266fa
SHA512

23b89c75d4b032247f9857fd3ea4727ffa45e89b4fdf7c64baf31ec256c42ae95e197f35a0143384ac6cde6ebe2fc40b9bbdeabf3bd9c5c963935a9d95a56e3f
SSDEEP

768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITYaIdQ:qDdFJy3QMOtEvwDpjjWMl7TdAQ

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2348	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2092	2024-10-18_438cbd3f29722c554727e51ccd79e46d_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2092-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x0007000000012117-11.dat	upx
behavioral1/memory/2348-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2092-15-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2348-27-0x0000000000500000-0x0000000000510000-memory.dmp	upx

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_438cbd3f29722c554727e51ccd79e46d_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 2092 wrote to memory of 2348	2092	2024-10-18_438cbd3f29722c554727e51ccd79e46d_cryptolocker.exe	30
PID 2092 wrote to memory of 2348	2092	2024-10-18_438cbd3f29722c554727e51ccd79e46d_cryptolocker.exe	30
PID 2092 wrote to memory of 2348	2092	2024-10-18_438cbd3f29722c554727e51ccd79e46d_cryptolocker.exe	30
PID 2092 wrote to memory of 2348	2092	2024-10-18_438cbd3f29722c554727e51ccd79e46d_cryptolocker.exe	30

C:\Users\Admin\AppData\Local\Temp\2024-10-18_438cbd3f29722c554727e51ccd79e46d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-10-18_438cbd3f29722c554727e51ccd79e46d_cryptolocker.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2092
- 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:2348

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
40KB

MD5
9dd1c7960dc0e344b87da5930cf5c1a0

SHA1
b26e93cd4608641a66dfc1fda9db99a501f9a5d0

SHA256
84ff3322c587acdc840a953d69d8b41dc42a106219235638a0880abf840ae6ba

SHA512
91b170eaa97f18807cfb29557f768775c51c730782e680a2099e02e4ea1f4f8c5cebab237b33fda15b609c4ba0fbb2650ad54107a4dac05d4eaf532e5ec88548

Download Submit
memory/2092-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2092-2-0x0000000000490000-0x0000000000496000-memory.dmp

Filesize
24KB

Download
memory/2092-1-0x0000000000440000-0x0000000000446000-memory.dmp

Filesize
24KB

Download
memory/2092-9-0x0000000000440000-0x0000000000446000-memory.dmp

Filesize
24KB

Download
memory/2092-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2348-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2348-19-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/2348-26-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2348-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download